Clear() public method

public Clear ( Color color ) : void
color Color
return void
        public override void Draw(System.Drawing.RectangleF dirtyRect)
        {
            var g = new Graphics();

            // NSView does not have a background color so we just use Clear to white here
            g.Clear(Color.White);

            //RectangleF ClientRectangle = this.Bounds;
            RectangleF ClientRectangle = dirtyRect;

            // Calculate the location and size of the drawing area
            // within which we want to draw the graphics:
            Rectangle rect = new Rectangle((int)ClientRectangle.X, (int)ClientRectangle.Y,
                                           (int)ClientRectangle.Width, (int)ClientRectangle.Height);
            drawingRectangle = new Rectangle(rect.Location, rect.Size);
            drawingRectangle.Inflate(-offset, -offset);
            //Draw ClientRectangle and drawingRectangle using Pen:
            g.DrawRectangle(Pens.Red, rect);
            g.DrawRectangle(Pens.Black, drawingRectangle);
            // Draw a line from point (3,2) to Point (6, 7)
            // using the Pen with a width of 3 pixels:
            Pen aPen = new Pen(Color.Green, 3);
            g.DrawLine(aPen, Point2D(new PointF(3, 2)),
                       Point2D(new PointF(6, 7)));

            g.PageUnit = GraphicsUnit.Inch;
            ClientRectangle = new RectangleF(0.5f,0.5f, 1.5f, 1.5f);
            aPen.Width = 1 / g.DpiX;
            g.DrawRectangle(aPen, ClientRectangle);

            aPen.Dispose();

            g.Dispose();
        }
		private void EnsureTemporaryBitmap( int width, int height )
		{
			if( bmp != null )
			{
				if( bmp.Width >= width && bmp.Height >= height )
				{
					g.Clear( Color.Black );
					return;
				}

				width = Math.Max( width, bmp.Width );
				height = Math.Max( height, bmp.Height );
			}

			Helpers.DisposeAndClear( ref g );
			Helpers.DisposeAndClear( ref bmp );

			bmp = new Bitmap( width, height, PixelFormat.Format32bppRgb );

			g = Graphics.FromImage( bmp );
			
			g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
			g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
			g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
			
			g.Clear( Color.Black );
		}
Example #3
2
        public RectangleTransparent()
        {
            clearPen = new Pen(Color.FromArgb(1, 0, 0, 0));
            borderDotPen = new Pen(Color.Black, 1);
            borderDotPen2 = new Pen(Color.White, 1);
            borderDotPen2.DashPattern = new float[] { 5, 5 };
            penTimer = Stopwatch.StartNew();
            ScreenRectangle = CaptureHelpers.GetScreenBounds();

            surface = new Bitmap(ScreenRectangle.Width, ScreenRectangle.Height);
            gSurface = Graphics.FromImage(surface);
            gSurface.InterpolationMode = InterpolationMode.NearestNeighbor;
            gSurface.SmoothingMode = SmoothingMode.HighSpeed;
            gSurface.CompositingMode = CompositingMode.SourceCopy;
            gSurface.CompositingQuality = CompositingQuality.HighSpeed;
            gSurface.Clear(Color.FromArgb(1, 0, 0, 0));

            StartPosition = FormStartPosition.Manual;
            Bounds = ScreenRectangle;
            Text = "ShareX - " + Resources.RectangleTransparent_RectangleTransparent_Rectangle_capture_transparent;

            Shown += RectangleLight_Shown;
            KeyUp += RectangleLight_KeyUp;
            MouseDown += RectangleLight_MouseDown;
            MouseUp += RectangleLight_MouseUp;

            using (MemoryStream cursorStream = new MemoryStream(Resources.Crosshair))
            {
                Cursor = new Cursor(cursorStream);
            }

            timer = new Timer { Interval = 10 };
            timer.Tick += timer_Tick;
            timer.Start();
        }
Example #4
1
        public void DrawPieChart()
        {
            g = Graphics.FromImage(bitmapd);
            g.Clear(System.Drawing.Color.AliceBlue);
            int a = db.getCountFromDB("select count(*) from music");

            DataTable dt = db.getQueryFromDB("select distinct Genre from music");
            int index = 0;
            int[] myPiePercent = new int[dt.Rows.Count];
            string [] values=new string[dt.Rows.Count];
            foreach (DataRow r in dt.Rows)
            {
                string s = r[0].ToString();

                int b = db.getCountFromDB(string.Format("select count(*) from music where Genre='{0}'", s));
                myPiePercent[index] = (int)Math.Ceiling(((double)b * 100 / a));
                values[index] = s;
                index++;
            }

            System.Drawing.Color[] myPieColors = { c1, c2, c3, c4 };
            g.Clear(System.Drawing.Color.AliceBlue);
            System.Drawing.Size myPieSize ;
            System.Drawing.Point myPieLocation ;
            if (x < y)
            {
                myPieSize= new System.Drawing.Size(x - 50, x - 50);
                myPieLocation = new System.Drawing.Point(x / 2, x / 2);
            }
            else
            {
                myPieSize = new System.Drawing.Size(y - 50, y - 50);
                myPieLocation = new System.Drawing.Point(y / 2, y / 2);
            }
            int PiePercentTotal = 0;
            for (int PiePercents = 0; PiePercents < myPiePercent.Length; PiePercents++)
            {
                using (SolidBrush brush = new SolidBrush(myPieColors[PiePercents]))
                {
                    g.FillPie(brush, new System.Drawing.Rectangle(new System.Drawing.Point(10, 10), myPieSize), Convert.ToSingle(PiePercentTotal * 360 / 100), Convert.ToSingle(myPiePercent[PiePercents] * 360 / 100));
                }
                    PiePercentTotal += myPiePercent[PiePercents];
            }

            double xx = 0, yy = 0;
            for (int k = 0; k < index; k ++)
            {
                yy = Math.Sin(100*k*Math.PI/180) * 90;
                xx = Math.Cos(k*100 * Math.PI / 180) * 90;
                //g.DrawRectangle(new System.Drawing.Pen(System.Drawing.Color.Black), myPieLocation.X+(int)xx,myPieLocation.Y+ (int)yy, 5, 5);
                g.DrawString(values[k], new System.Drawing.Font("Sans", 10), System.Drawing.Brushes.Black, myPieLocation.X-30+(float)xx, myPieLocation.Y+(float)yy);
            }
        }
Example #5
0
    private void CreateImage(string checkCode)
    {
        int iwidth = (int)(checkCode.Length * 25);

        System.Drawing.Bitmap   image = new System.Drawing.Bitmap(iwidth, 30);
        System.Drawing.Graphics g     = System.Drawing.Graphics.FromImage(image);
        System.Drawing.Font     f     = new System.Drawing.Font("Arial", 20, System.Drawing.FontStyle.Bold);
        System.Drawing.Brush    b     = new System.Drawing.SolidBrush(System.Drawing.Color.White);
        //g.FillRectangle(new System.Drawing.SolidBrush(Color.Blue),0,0,image.Width, image.Height);
        g.Clear(System.Drawing.Color.Blue);
        g.DrawString(checkCode, f, b, 3, 3);

        System.Drawing.Pen blackPen = new System.Drawing.Pen(System.Drawing.Color.Black, 0);
        Random             rand     = new Random();

        for (int i = 0; i < 5; i++)
        {
            int y = rand.Next(image.Height);
            g.DrawLine(blackPen, 0, y, image.Width, y);
        }

        System.IO.MemoryStream ms = new System.IO.MemoryStream();
        image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
        Response.ClearContent();
        Response.ContentType = "image/Jpeg";
        Response.BinaryWrite(ms.ToArray());
        g.Dispose();
        image.Dispose();
    }
        public void DrawPDF417(ref Graphics g)
        {
            g.Clear(this.backcolor);
            SolidBrush brush = new SolidBrush(this.forecolor);
            int x = this.leftmargin;
            int y = this.topmargin;
            SizeF ef = g.MeasureString(this.bottomcomment, this.txtFont, 0x7fffffff, StringFormat.GenericTypographic);
            for (int i = 0; i < this.encodebinarystr.Length; i++)
            {
                char ch = this.encodebinarystr[i];
                switch (ch)
                {
                    case '0':
                        x += this.modulewidth;
                        break;

                    case '1':
                        g.FillRectangle(brush, x, y, this.modulewidth, this.moduleheight);
                        x += this.modulewidth;
                        break;

                    default:
                        if (ch == 'Z')
                        {
                            y += this.moduleheight;
                            x = this.leftmargin;
                        }
                        break;
                }
            }
            g.DrawString(this.topcomment, this.txtFont, brush, (float) this.topcommentleftmargin, (float) this.topcommenttopmargin);
            //g.DrawString(" ", this.txtFont, brush, (float) 0f, (float) (this.symbolheight - ef.Height));
            brush.Dispose();
        }
Example #7
0
        Bitmap drawBattleDice(Graphics gDice, Bitmap diceBitmap, Pen myPen, Brush myBrush, int level, int randomNumber)
        {
            gDice.Clear(Color.Transparent);
            PointF[] Verticies;
                Verticies = new PointF[3];
                Verticies[0] = new PointF(0, pbDice.Height - 1);
                Verticies[1] = new PointF(pbDice.Width - 1, pbDice.Height - 1);
                Verticies[2] = new PointF(pbDice.Width / 2.0f, (float)(pbDice.Height - 1 - pbDice.Height / 2 * Math.Sqrt(3)));

                if (level == 1)
                    gDice.FillPolygon(new SolidBrush(Color.Green), Verticies);
                else if(level==2)
                    gDice.FillPolygon(new SolidBrush(Color.Red), Verticies);
                else if (level == 3)
                    gDice.FillPolygon(new SolidBrush(Color.Blue), Verticies);
                else if (level == 4)
                    gDice.FillPolygon(new SolidBrush(Color.Purple), Verticies);
                myPen.Color = Color.Black;
                gDice.DrawPolygon(myPen, Verticies);
            Font font = new Font("Times New Roman", 16, FontStyle.Bold);
            StringFormat format = new StringFormat();
            Brush whiteBrush = new SolidBrush(Color.White);
            format.Alignment = StringAlignment.Center;
            RectangleF rect = new RectangleF(pbDice.Width / 2 - 20 , pbDice.Height / 2 - 4 , 40 , 25);
            if (randomNumber == 0)
            {
                rect.Y = pbDice.Height / 2 + 6;
                gDice.DrawString("Roll", new Font("Times New Roman", 14, FontStyle.Italic), whiteBrush, rect, format);
            }
            else
            {
                gDice.DrawString(randomNumber.ToString(), font, whiteBrush, rect, format);
            }
            return diceBitmap;
        }
Example #8
0
 ///<summary>
 /// 对给定的一个图片(Image对象)生成一个指定大小的缩略图。
 ///</summary>
 ///<param name="originalImage">原始图片</param>
 ///<param name="thumMaxWidth">缩略图的宽度</param>
 ///<param name="thumMaxHeight">缩略图的高度</param>
 ///<returns>返回缩略图的Image对象</returns>
 public static System.Drawing.Image GetThumbNailImage(System.Drawing.Image originalImage, int thumMaxWidth, int thumMaxHeight)
 {
     System.Drawing.Size     thumRealSize = System.Drawing.Size.Empty;
     System.Drawing.Image    newImage     = originalImage;
     System.Drawing.Graphics graphics     = null;
     try
     {
         thumRealSize = GetNewSize(thumMaxWidth, thumMaxHeight, originalImage.Width, originalImage.Height);
         newImage     = new System.Drawing.Bitmap(thumRealSize.Width, thumRealSize.Height);
         graphics     = System.Drawing.Graphics.FromImage(newImage);
         graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
         graphics.InterpolationMode  = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
         graphics.SmoothingMode      = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
         graphics.Clear(System.Drawing.Color.Transparent);
         graphics.DrawImage(originalImage, new System.Drawing.Rectangle(0, 0, thumRealSize.Width, thumRealSize.Height), new System.Drawing.Rectangle(0, 0, originalImage.Width, originalImage.Height), System.Drawing.GraphicsUnit.Pixel);
     }
     catch { }
     finally
     {
         if (graphics != null)
         {
             graphics.Dispose();
             graphics = null;
         }
     }
     return(newImage);
 }
Example #9
0
 void Former.new84file()
 {
     pixels = new PixelButton[256, 128];
     map = new Bitmap(256, 128);
     gra = Graphics.FromImage(map);
     gra.Clear(Color.Transparent);
 }
Example #10
0
 void Former.new42file()
 {
     pixels = new PixelButton[128, 64];
     map = new Bitmap(128, 64);
     gra = Graphics.FromImage(map);
     gra.Clear(Color.Transparent);
 }
Example #11
0
        int x1 = 0, y1 = 0; // для рисования линии

        #endregion Fields

        #region Constructors

        public Form1()
        {
            InitializeComponent();
            this.Height = System.Windows.Forms.SystemInformation.PrimaryMonitorSize.Height;
            this.Width = System.Windows.Forms.SystemInformation.PrimaryMonitorSize.Width;
            imageBox.Width = System.Windows.Forms.SystemInformation.PrimaryMonitorSize.Width - 200;
            imageBox.Height = System.Windows.Forms.SystemInformation.PrimaryMonitorSize.Height - 200;
            panel3.Width = System.Windows.Forms.SystemInformation.PrimaryMonitorSize.Width - 195;
            imagePanel.Width = System.Windows.Forms.SystemInformation.PrimaryMonitorSize.Height - 180;
            imagePanel.Height = imageBox.Width = System.Windows.Forms.SystemInformation.PrimaryMonitorSize.Width - 180;
            imagePanel.AutoSize = true;
            imagePanel.AutoScroll = true;

            DoubleBuffered = true;

            g = imageBox.CreateGraphics();
            g.Clear(foneColor);

            //// Тест
            //bmp = new Bitmap(imageBox.Width, imageBox.Height);
            //g = Graphics.FromImage(bmp);
            //g.Clear(foneColor);
            //g.FillRectangle(new SolidBrush(Color.Gainsboro), 0, 0, bmp.Width, bmp.Height);
            //g.DrawLine(blackPen, 0, 0, bmp.Width, bmp.Height);
            //g.DrawLine(blackPen, 0, bmp.Height, bmp.Width, 0);
            //g.Dispose();

            //this.imageBox.Image = bmp;
            //this.imageBox.Size = bmp.Size;
            //this.vScrollBar1.Maximum = bmp.Height + this.ClientSize.Height;
            //this.hScrollBar1.Maximum = bmp.Width + this.ClientSize.Width;
            //this.hScrollBar1.Value = 0;

            //this.Text = "x = 0, y = 0";
        }
Example #12
0
        public CDrawWinForm()
        {
            this.Icon = new System.Drawing.Icon(Path.Combine(System.Environment.CurrentDirectory, CSettings.sIcon));

            _Textures = new List<STexture>();
            _Bitmaps = new List<Bitmap>();

            _Keys = new CKeys();
            _Mouse = new CMouse();
            this.ClientSize = new Size(1280, 720);

            this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.OptimizedDoubleBuffer | ControlStyles.Opaque, true);

            // Create the backbuffer
            _backbuffer = new Bitmap(CSettings.iRenderW, CSettings.iRenderH);
            _g = Graphics.FromImage(_backbuffer);
            _g.Clear(Color.DarkBlue);

            this.Paint += new PaintEventHandler(this.OnPaintEvent);
            this.Closing += new CancelEventHandler(this.OnClosingEvent);
            this.KeyDown += new KeyEventHandler(this.OnKeyDownEvent);
            this.KeyPress += new KeyPressEventHandler(this.OnKeyPressEvent);
            this.KeyUp += new KeyEventHandler(this.OnKeyUpEvent);
            this.Resize += new EventHandler(this.OnResizeEvent);

            this.MouseMove += new MouseEventHandler(this.OnMouseMove);
            this.MouseDown += new MouseEventHandler(this.OnMouseDown);
            this.MouseUp += new MouseEventHandler(this.OnMouseUp);

            FlipBuffer();
            Cursor.Show();
        }
Example #13
0
        public FormMain()
        {
            InitializeComponent();

            BGpath = currentDir + @"DATA\IMG\background.jpg";
            CHpath = currentDir + @"DATA\IMG\actor.png";

            btnSTART.Enabled = false;
            btnStep.Enabled = false;
            checkBG.Checked = checkCH.Checked = checkTXT.Checked = true;
            btnBackColor.BackColor = Color.White;
            btnForeColor.ForeColor = Color.White;
            btnBackColor.ForeColor = Color.Black;
            btnForeColor.BackColor = Color.Black;

            Label lab = new Label();
            lab.BackColor = Color.Transparent;
            ThumbPicCH.Controls.Add(lab);
            btnStep.Text = "��ʼ��������";

            GThumb = panel1.CreateGraphics();
            GThumb.Clear(Color.White);

            LoadFile();
        }
Example #14
0
        /// <summary>
        /// Constructs a new instance.
        /// </summary>
        /// <param name="width">The width of the backing store in pixels.</param>
        /// <param name="height">The height of the backing store in pixels.</param>
        /// <param name="renderer">GWEN renderer.</param>
        public TextRenderer(int width, int height, FreezingArcherGwenRenderer renderer)
        {
            if (width <= 0)
                throw new ArgumentOutOfRangeException("width");
            if (height <= 0)
                throw new ArgumentOutOfRangeException("height");

            bmp = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            gfx = Graphics.FromImage(bmp);
            gfx.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
            gfx.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            gfx.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;

            // NOTE:    TextRenderingHint.AntiAliasGridFit looks sharper and in most cases better
            //          but it comes with a some problems.
            //
            //          1.  Graphic.MeasureString and format.MeasureCharacterRanges 
            //              seem to return wrong values because of this.
            //
            //          2.  While typing the kerning changes in random places in the sentence.
            // 
            //          Until 1st problem is fixed we should use TextRenderingHint.AntiAlias...  :-(

            gfx.TextRenderingHint = TextRenderingHint.AntiAlias;
            gfx.Clear(Color.Transparent);
            texture = new Texture(renderer) {Width = width, Height = height};
        }
Example #15
0
        public static void Draw(ref List<long> Data, Graphics g)
        {
            List<double> normalized_data = new List<double>();
            lock (Data)
            {
                if (Data.Count > 100)
                {
                    for (int remove = 1; remove <= 10; remove++)
                    {
                        Data.RemoveAt((Data.Count - 1) / remove);
                    }
                }
                long max = 0;
                for (int d = 0; d < Data.Count; d++) if (Data[d] > max) max = Data[d];
                for (int d = 0; d < Data.Count; d++) normalized_data.Add((double)Data[d] / Math.Max((double)max, 0.0000001));
            }
            RectangleF bounds = g.VisibleClipBounds;

            g.Clear(Color.DarkGray);
            for (int d = 0; d < normalized_data.Count - 1; d++)
            {
                g.DrawLine(Pens.White,
                    ((float)d / (float)normalized_data.Count) * bounds.Width,
                    bounds.Height - ((float)normalized_data[d] * bounds.Height),
                    (((float)d + 1) / (float)normalized_data.Count) * bounds.Width,
                    bounds.Height - ((float)normalized_data[d + 1] * bounds.Height));
            }
        }
Example #16
0
 // ���»���
 public void PaintPalette(Graphics gp)
 {
     gp.Clear(this._bgColor);
     this._food.Paint(gp);
     foreach (Block b in this._blocks)
         b.Paint(gp);
 }
 public IDisposable CreateContext()
 {
     _gfx = Graphics.FromImage(_bitmap);
     _gfx.Init();
     _gfx.Clear(System.Drawing.Color.Transparent);
     return _gfx;
 }
        }//end constructor

        //call the paint method
        public override void paint (Graphics graphics)
        {
            try
            {
                //save the old value of the circle position
                previousLeftPosition = leftPosition;
                previousTopPosition = topPosition;

                //put this thread to sleep
                Thread.Sleep(speed);

                //lock thread to prevent thread from running back on itself
                lock (typeof(Thread))
                {
                    leftPosition = leftPosition + base.directionX;
                    topPosition = topPosition + base.directionY;
                    base.CheckCoordinates();

                    //grouped the drawing functions together like this to slightly reduce flickering
                    graphics.DrawEllipse(new System.Drawing.Pen(Color.White), previousLeftPosition, previousTopPosition, width, height);
                    graphics.DrawEllipse(new System.Drawing.Pen(shapeColor), leftPosition, topPosition, width, height);
                }
            }
            catch
            {
                //force the thread to end, but only after removing the shape from the screen
                graphics.Clear(Color.White);
                Thread.CurrentThread.Abort();
            }
        }//end paint
Example #19
0
        /// <summary>
        /// Constructs a new instance.
        /// </summary>
        /// <param name="width">The width of the backing store in pixels.</param>
        /// <param name="height">The height of the backing store in pixels.</param>
        /// <param name="renderer">GWEN renderer.</param>
        public TextRenderer(int width, int height, Renderer.OpenTK renderer)
        {
            if (width <= 0)
                throw new ArgumentOutOfRangeException("width");
            if (height <= 0)
                throw new ArgumentOutOfRangeException("height");
            if (GraphicsContext.CurrentContext == null)
                throw new InvalidOperationException("No GraphicsContext is current on the calling thread.");

            bmp = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            gfx = Graphics.FromImage(bmp);

            // NOTE:    TextRenderingHint.AntiAliasGridFit looks sharper and in most cases better
            //          but it comes with a some problems.
            //
            //          1.  Graphic.MeasureString and format.MeasureCharacterRanges 
            //              seem to return wrong values because of this.
            //
            //          2.  While typing the kerning changes in random places in the sentence.
            // 
            //          Until 1st problem is fixed we should use TextRenderingHint.AntiAlias...  :-(

            gfx.TextRenderingHint = TextRenderingHint.AntiAlias;
            gfx.Clear(Color.Transparent);
            texture = new Texture(renderer) {Width = width, Height = height};
        }
Example #20
0
        //Render a Drawing
        public static void Render(DnaDrawing drawing,Graphics g,int scale)
        {
            g.Clear(Color.Black);

            foreach (DnaPolygon polygon in drawing.Polygons)
                Render(polygon, g, scale);
        }
Example #21
0
        //Render a Drawing
        public static void Render(DnaDrawing drawing,Graphics g,int scale)
        {
            g.Clear(Color.Black);

            foreach (DnaShape s in drawing.Shapes)
                s.Render(g, scale);
        }
Example #22
0
 void Former.new21file()
 {
     pixels = new PixelButton[64, 32];
     map = new Bitmap(64,32);
     gra = Graphics.FromImage(map);
     gra.Clear(Color.Transparent);
 }
Example #23
0
        public void Draw(Graphics g)
        {
            g.Clear(Color.Gray);

            PointF cellSize = new PointF((float)Size.X / (ChessGameField.FIELD_SIZE), (float)Size.Y / (ChessGameField.FIELD_SIZE));

            for (int i = 0; i <= ChessGameField.FIELD_SIZE; ++i)
            {
                g.DrawLine(Pens.Black, Pos.X + i * cellSize.X, Pos.Y, Pos.X + i * cellSize.X, Pos.Y + Size.Y);
            }

            for (int i = 0; i <= ChessGameField.FIELD_SIZE; ++i)
            {
                g.DrawLine(Pens.Black, Pos.X, Pos.Y + i * cellSize.Y, Pos.X + Size.X, Pos.Y + i * cellSize.Y);
            }

            Field.ForEachCell((pos, cell) => { if (cell.figure != null) cell.figure.Draw(g, GetColor(cell.figure.GetOwner()), GetCellPos(pos, cellSize), cellSize); return true; });

            if (State == ActionState.Selected)
            {
                PointF pos = GetCellPos(SelectedPoint, cellSize);
                Pen pen = new Pen(Brushes.Green, 2);
                int border = 4;
                g.DrawRectangle(pen, new Rectangle((int)pos.X + border + 1, (int)pos.Y + border + 1, (int)cellSize.X - border*2, (int)cellSize.Y - border*2));
            }
        }
Example #24
0
 void Galattron_Load(object sender, EventArgs e)
 {
     b=new Bitmap(484,461);
     g=Graphics.FromImage(b);
     g.Clear(Color.Black);
     pictureBox1.Image=b;
 }
Example #25
0
        private void wypelniony()
        {
           
            bmp = new Bitmap((int)pbWIDTH, (int)pbHEIGHT);
            

            Point p1 = new Point((int)(pbWIDTH / 6), (int)(pbHEIGHT / 2));
            Point p2 = new Point((int)(pbWIDTH * 5 / 6), (int)(pbHEIGHT / 2));
            Point p1_25 = new Point(pbWIDTH / 3, pbHEIGHT / 4 * 3);
            Point p2_25 = new Point((int)(pbWIDTH / 3 * 2), (int)(pbHEIGHT / 4 * 3));
            Point p1_75 = new Point((int)(pbWIDTH / 3), (int)(pbHEIGHT / 4));
            Point p2_75 = new Point((int)(pbWIDTH / 3 * 2), (int)(pbHEIGHT / 4));
            Pen pen1 = new Pen(Brushes.Black, width_pen1);
            Pen pen2 = new Pen(Brushes.Black, width_pen2);

            

            g = Graphics.FromImage(bmp);
            g.Clear(Color.CornflowerBlue);
            g.FillRectangle(Brushes.White, new Rectangle(0, 0, pbWIDTH, pbHEIGHT - (int)(pbComplete * pbUnit)));
            g.DrawRectangle(pen1, 0, 0, pbWIDTH, pbHEIGHT);
            g.DrawLine(pen2, p1, p2);
            g.DrawLine(pen2, p1_25, p2_25);
            g.DrawLine(pen2, p1_75, p2_75);
            //g.DrawString(pbComplete + "%", new Font("Arial", pbHEIGHT / 5),Brushes.Black,new PointF(pbWIDTH/12,pbHEIGHT/4));
            this.Image = bmp;
            //return bmp;
        }
        //Render a Drawing
        public static void Render(DnaDrawing drawing,Graphics g,int scale)
        {
            g.Clear(Tools.avgColour);

            foreach (DnaPolygon polygon in drawing.Polygons)
                Render(polygon, g, scale);
        }
        public void DrawInto(Graphics g)
        {
            int cellWidth = Width / puzzle.Size;
            int cellHeight = Height / puzzle.Size;

            g.Clear(Color.White);

            for (int x = 1; x <= puzzle.Size - 1; x++)
            {
                g.DrawLine(Pens.Black, new Point(cellWidth * x, 0), new Point(cellWidth * x, Height));
                g.DrawLine(Pens.Black, new Point(0, cellHeight * x), new Point(Width, cellHeight * x));
            }

            for (int i = 0; i < puzzle.Size; i++)
            {
                for (int j = 0; j < puzzle.Size; j++)
                {
                    float y = cellHeight * i + cellHeight / 2 - font.Height / 2;
                    float x = cellWidth * j + cellWidth / 2 - font.Size / 2;

                    if (showSolution && puzzle.IsSolution(j, i))
                        g.FillRectangle(new SolidBrush(Color.FromArgb(100, Color.Yellow)), new Rectangle(new Point(cellWidth * j, cellHeight * i), new Size(cellWidth, cellHeight)));

                    g.DrawString(puzzle[i, j].ToString(), font, Brushes.Black, new PointF(x, y));
                }
            }
        }
Example #28
0
        public void DrawTitle(Graphics g, List<byte> data)
        {
            _currentData = data;
            _drawKind = DrawKind.Title;

            g.Clear(SystemColors.Control);
            Brush brush = new SolidBrush(Color.Gray);
            int x = _XOffset;
            int y = 0;
            int scale = Scale;
            int pos = 0;
            int length = data.Count;
            while (pos < length)
            {
                byte b1 = data[pos];

                ++pos;

                y += scale;

                if (b1 == 11)
                {
                    g.FillRectangle(brush, x, y, scale, scale);
                }

                if (b1 == 200)
                {
                    y = 0;
                    x += scale;
                }
            }
        }
        public override void DrawRect(System.Drawing.RectangleF dirtyRect)
        {
            //			var gc = NSGraphicsContext.FromGraphicsPort(
            //				NSGraphicsContext.CurrentContext.GraphicsPort.Handle,true);

            //			var gc = NSGraphicsContext.CurrentContext;
            //
            //			var g = new Graphics(gc.GraphicsPort);
            var g = new Graphics();

            // NSView does not have a background color so we just use Clear to white here
            g.Clear(Color.White);

            //RectangleF ClientRectangle = this.Bounds;
            RectangleF ClientRectangle = dirtyRect;

            // Following codes draw a line from (0, 0) to (1, 1) in unit of inch:
            /*g.PageUnit = GraphicsUnit.Inch;
            Pen blackPen = new Pen(Color.Black, 1/g.DpiX);
            g.DrawLine(blackPen, 0, 0, 1, 1);*/

            // Following code shifts the origin to the center of
            // client area, and then draw a line from (0,0) to (1, 1) inch:
            g.PageUnit = GraphicsUnit.Inch;
            g.TranslateTransform((ClientRectangle.Width / g.DpiX) / 2,
                                 (ClientRectangle.Height / g.DpiY) / 2);
            Pen greenPen = new Pen(Color.Green, 1 /  g.DpiX);
            g.DrawLine(greenPen, 0, 0, 1, 1);

            g.Dispose ();
        }
Example #30
0
        /// <summary>
        /// 压缩图片,返回map
        /// </summary>
        /// <param name="width">宽度</param>
        /// <param name="height">高度</param>
        /// <returns></returns>
        public Bitmap ResizeImg(int width, int height)
        {
            if (_oldImg == null)
                return null;
            int ow = _oldImg.Width, oh = _oldImg.Height; //原始大小
            if (height == -2)
            {
                var rale = (double)width / Math.Max(ow, oh); //压缩比例
                width = (int)Math.Ceiling(ow * rale);
                height = (int)Math.Ceiling(oh * rale);
            }
            else
            {
                width = (width != -1 ? width : ow);
                height = (height != -1 ? height : oh);
            }
            var bm = new Bitmap(width, height, PixelFormat.Format32bppRgb);

            _newGraphics = Graphics.FromImage(bm);
            //呈现质量
            _newGraphics.CompositingQuality = CompositingQuality.HighQuality;
            //像素偏移方式
            _newGraphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
            //平滑处理
            _newGraphics.SmoothingMode = SmoothingMode.HighQuality;
            //插补模式,双三次插值法
            _newGraphics.InterpolationMode = InterpolationMode.HighQualityBicubic;

            _newGraphics.Clear(Color.Transparent);

            _newGraphics.DrawImage(_oldImg, new Rectangle(0, 0, width, height), new Rectangle(0, 0, ow, oh),
                                  GraphicsUnit.Pixel);
            //return "处理成功";
            return bm;
        }
Example #31
0
 public void new22file()
 {
     pixels = new PixelButton[64, 64];
     map = new Bitmap(64, 64);
     gra = Graphics.FromImage(map);
     gra.Clear(Color.Transparent);
 }
        public override void DrawRect(System.Drawing.RectangleF dirtyRect)
        {
            Graphics g = new Graphics();

            g.Clear(Color.White);

            int width = 30;
            int height = 128;
            int y = 10;
            // Create opaque color maps with alpha = 255:
            ColorMap cm = new ColorMap();
            Font aFont = new Font("Arial", 20, FontStyle.Bold);
            g.DrawString("OPAQUE COLOR", aFont, Brushes.Black, 10, 60);
            DrawColorBar(g, 10, y, width, height, cm, "Spring");
            DrawColorBar(g, 10 + 40, y, width, height, cm, "Summer");
            DrawColorBar(g, 10 + 2 * 40, y, width, height, cm, "Autumn");
            DrawColorBar(g, 10 + 3 * 40, y, width, height, cm, "Winter");
            DrawColorBar(g, 10 + 4 * 40, y, width, height, cm, "Jet");
            DrawColorBar(g, 10 + 5 * 40, y, width, height, cm, "Gray");
            DrawColorBar(g, 10 + 6 * 40, y, width, height, cm, "Hot");
            DrawColorBar(g, 10 + 7 * 40, y, width, height, cm, "Cool");

            y = y + 150;
            // Create transparent color maps with alpha = 150:
            ColorMap cm1 = new ColorMap(64, 150);
            g.DrawString("TRANSPARENT COLOR", aFont, Brushes.Black, 10, 210);
            DrawColorBar(g, 10, y, width, height, cm1, "Spring");
            DrawColorBar(g, 10 + 40, y, width, height, cm1, "Summer");
            DrawColorBar(g, 10 + 2 * 40, y, width, height, cm1, "Autumn");
            DrawColorBar(g, 10 + 3 * 40, y, width, height, cm1, "Winter");
            DrawColorBar(g, 10 + 4 * 40, y, width, height, cm1, "Jet");
            DrawColorBar(g, 10 + 5 * 40, y, width, height, cm1, "Gray");
            DrawColorBar(g, 10 + 6 * 40, y, width, height, cm1, "Hot");
            DrawColorBar(g, 10 + 7 * 40, y, width, height, cm1, "Cool");
        }
    //פונקציה שמשנה גודל לתמונות

    static System.Drawing.Image FixedSize(System.Drawing.Image imgPhoto, int Width, int Height)

    {
        int   sourceWidth  = Convert.ToInt32(imgPhoto.Width);
        int   sourceHeight = Convert.ToInt32(imgPhoto.Height);
        int   sourceX      = 0;
        int   sourceY      = 0;
        int   destX        = 0;
        int   destY        = 0;
        float nPercent     = 0;
        float nPercentW    = 0;
        float nPercentH    = 0;

        nPercentW = ((float)Width / (float)sourceWidth);
        nPercentH = ((float)Height / (float)sourceHeight);
        if (nPercentH < nPercentW)
        {
            nPercent = nPercentH;
            destX    = System.Convert.ToInt16((Width - (sourceWidth * nPercent)) / 2);
        }

        else
        {
            nPercent = nPercentW;

            destY = System.Convert.ToInt16((Height - (sourceHeight * nPercent)) / 2);
        }


        int destWidth  = (int)(sourceWidth * nPercent);
        int destHeight = (int)(sourceHeight * nPercent);

        System.Drawing.Bitmap bmPhoto = new System.Drawing.Bitmap(Width, Height, PixelFormat.Format24bppRgb);

        bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution);

        System.Drawing.Graphics grPhoto = System.Drawing.Graphics.FromImage(bmPhoto);

        grPhoto.Clear(System.Drawing.Color.White);

        grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic;


        grPhoto.DrawImage(imgPhoto,

                          new System.Drawing.Rectangle(destX, destY, destWidth, destHeight),

                          new System.Drawing.Rectangle(sourceX, sourceY, sourceWidth, sourceHeight),

                          System.Drawing.GraphicsUnit.Pixel);


        grPhoto.Dispose();

        return(bmPhoto);
    }
Example #34
0
    private static System.Drawing.Bitmap RotateImg
        (System.Drawing.Bitmap bmp, float angle)
    {
        angle = angle % 360;
        if (angle > 180)
        {
            angle -= 360;
        }
        float sin = (float)Math.Abs(Math.Sin(angle *
                                             Math.PI / 180.0));                  // this function takes radians
        float cos          = (float)Math.Abs(Math.Cos(angle * Math.PI / 180.0)); // this one too
        float newImgWidth  = sin * bmp.Height + cos * bmp.Width;
        float newImgHeight = sin * bmp.Width + cos * bmp.Height;
        float originX      = 0f;
        float originY      = 0f;

        if (angle > 0)
        {
            if (angle <= 90)
            {
                originX = sin * bmp.Height;
            }
            else
            {
                originX = newImgWidth;
                originY = newImgHeight - sin * bmp.Width;
            }
        }
        else
        {
            if (angle >= -90)
            {
                originY = sin * bmp.Width;
            }
            else
            {
                originX = newImgWidth - sin * bmp.Height;
                originY = newImgHeight;
            }
        }
        System.Drawing.Bitmap newImg =
            new System.Drawing.Bitmap((int)newImgWidth, (int)newImgHeight);
        System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(newImg);
        g.Clear(System.Drawing.Color.White);
        g.TranslateTransform(originX, originY); // offset the origin to our calculated values
        g.RotateTransform(angle);               // set up rotate
        g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
        g.DrawImageUnscaled(bmp, 0, 0);         // draw the image at 0, 0
        g.Dispose();
        return(newImg);
    }
Example #35
0
 public void makeThumbnail(string it, string Imageurl)
 {
     if (File.Exists(Server.MapPath("~/images/" + it + ".jpg")))
     {
         return;
     }
     else
     {
         try
         {
             System.Net.WebRequest request = System.Net.WebRequest.Create(Imageurl);
             request.Timeout = 10000;
             System.Net.HttpWebResponse httpresponse = (System.Net.HttpWebResponse)request.GetResponse();
             Stream s = httpresponse.GetResponseStream();
             System.Drawing.Image img = System.Drawing.Image.FromStream(s);
             int towidth  = 135;
             int toheight = 80;
             int x        = 0;
             int y        = 0;
             int ow       = img.Width;
             int oh       = img.Height;
             System.Drawing.Image    bitmap = new System.Drawing.Bitmap(towidth, toheight);
             System.Drawing.Graphics g      = System.Drawing.Graphics.FromImage(bitmap);
             g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
             g.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
             g.Clear(System.Drawing.Color.Transparent);
             g.DrawImage(img, new System.Drawing.Rectangle(0, 0, towidth, toheight),
                         new System.Drawing.Rectangle(x, y, ow, oh),
                         System.Drawing.GraphicsUnit.Pixel);
             try
             {
                 bitmap.Save(Server.MapPath("~/images/" + it + ".jpg"), System.Drawing.Imaging.ImageFormat.Jpeg);
             }
             catch (System.Exception e)
             {
                 throw e;
             }
             finally
             {
                 img.Dispose();
                 bitmap.Dispose();
                 g.Dispose();
             }
             return;
         }
         catch
         {
             return;
         }
     }
 }
Example #36
0
    public static string createModel(String[] array)
    {
        if (array.Length > 0)
        {
            System.Drawing.Bitmap   bm = new System.Drawing.Bitmap(400, array.Length * 90);
            System.Drawing.Graphics g  = System.Drawing.Graphics.FromImage(bm);
            g.Clear(System.Drawing.Color.White);
            int x = 100;
            int y = 10;
            System.Drawing.StringFormat f = new System.Drawing.StringFormat();
            f.Alignment     = System.Drawing.StringAlignment.Center;
            f.LineAlignment = System.Drawing.StringAlignment.Center;
            System.Drawing.Font font;
            System.Drawing.Drawing2D.LinearGradientBrush b = new System.Drawing.Drawing2D.LinearGradientBrush(new System.Drawing.Point(0, 40), new System.Drawing.Point(30, 130), System.Drawing.Color.GreenYellow, System.Drawing.Color.LemonChiffon);
            for (int i = 0; i < array.Length; i++)
            {
                font = new System.Drawing.Font("Arial Unicode MS", 10, System.Drawing.FontStyle.Regular);
                g.DrawImageUnscaled(System.Drawing.Image.FromFile(HttpContext.Current.Request.MapPath("tskOval.png")), x, y);
                g.DrawString(array[i].Substring(0, (array[i].Length > 52 ? 52 : array[i].Length)), font, System.Drawing.Brushes.Black, new System.Drawing.Rectangle(x + 30, y + 6, 172, 40), f);
                y += 85;
            }

            x = 100;
            y = 10;
            int y1, y2;
            for (int i = 1; i < array.Length; i++)
            {
                System.Drawing.Pen p = new System.Drawing.Pen(System.Drawing.Color.Black);
                p.Width = 1.5F;
                y1      = (((i) * 50) + y + ((i - 1) * 35));
                y2      = (((i) * 50) + y + ((i) * 35));
                g.DrawLine(p, 200, y1 + 2, 200, y2);
                System.Drawing.Point[] pns = new System.Drawing.Point[4];
                pns[0] = new System.Drawing.Point(195, y2 - 5);
                pns[1] = new System.Drawing.Point(200, y2);
                pns[2] = new System.Drawing.Point(205, y2 - 5);
                pns[3] = new System.Drawing.Point(195, y2 - 5);
                g.FillPolygon(System.Drawing.Brushes.Black, pns);

                // g.DrawString(((Node)SessionClass.Flow[i-1]).decision.Equals("True")?"Yes":"No", new System.Drawing.Font("Arial Unicode MS", 9, System.Drawing.FontStyle.Regular), System.Drawing.Brushes.Black, new System.Drawing.Point(205, y1 +6));
            }
            string res = HttpContext.Current.Server.MapPath("Results") + "\\User" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".png";
            bm.Save(res, System.Drawing.Imaging.ImageFormat.Png);
            return("Results/" + res.Replace(HttpContext.Current.Server.MapPath("Results") + "\\", ""));
        }
        else
        {
            return("");
        }
    }
Example #37
0
    //另存图片,并修改大小。
    public static void SaveImage(string fromFile, string toFile, double newWidth, double newHeight)
    {
        try
        {
            System.Drawing.Image myimage = System.Drawing.Image.FromStream(new MemoryStream(File.ReadAllBytes(fromFile)));

            double oldWidth  = myimage.Width;
            double oldHeight = myimage.Height;

            if (oldWidth > newWidth || oldHeight > newHeight)
            {
                if (myimage.Width >= myimage.Height)
                {
                    oldHeight = newHeight;
                    oldWidth  = newHeight / myimage.Height * myimage.Width;
                }
                else
                {
                    oldWidth  = newWidth;
                    oldHeight = newWidth / myimage.Width * myimage.Height;
                }
            }

            System.Drawing.Size     mysize = new System.Drawing.Size((int)oldWidth, (int)oldHeight);
            System.Drawing.Bitmap   bitmap = new System.Drawing.Bitmap(mysize.Width, mysize.Height);
            System.Drawing.Graphics g      = System.Drawing.Graphics.FromImage(bitmap);
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
            g.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            g.Clear(System.Drawing.Color.Transparent);
            g.DrawImage(myimage, new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height), new System.Drawing.Rectangle(0, 0, myimage.Width, myimage.Height), System.Drawing.GraphicsUnit.Pixel);

            bitmap.Save(toFile, System.Drawing.Imaging.ImageFormat.Jpeg);
            g.Dispose();
            bitmap.Dispose();
            myimage.Dispose();
        }
        catch { }
    }
    public void AutoImage(string strCompanyName)
    {
        Int16 swidth = Convert.ToInt16(strCompanyName.Length * 13);

        System.Drawing.Bitmap   objBMP      = new System.Drawing.Bitmap(swidth, 30);
        System.Drawing.Graphics objGraphics = System.Drawing.Graphics.FromImage(objBMP);
        objGraphics.Clear(System.Drawing.Color.White);
        objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;
        //' Configure font to use for text
        System.Drawing.Font objFont = new System.Drawing.Font("Arial", 15, System.Drawing.FontStyle.Bold);

        string randomStr = strCompanyName;

        int[] myIntArray = new int[6];
        int   x;

        //That is to create the random # and add it to our string
        //Random autoRand = new Random();
        //for (x = 0; x < 6; x++)
        //{
        //    myIntArray[x] = System.Convert.ToInt32(autoRand.Next(0, 9));
        //    randomStr += (myIntArray[x].ToString());
        //}
        //This is to add the string to session cookie, to be compared later


        //' Write out the text
        objGraphics.DrawString(strCompanyName, objFont, System.Drawing.Brushes.Black, 3, 3);

        //' Set the content type and return the image
        //Response.ContentType = "image/GIF";
        File.Delete(HttpContext.Current.Server.MapPath("~\\provider\\LogoImages\\Default.jpg"));
        objBMP.Save(HttpContext.Current.Server.MapPath("~\\provider\\LogoImages\\Default.jpg"), objBMP.RawFormat);
        objFont.Dispose();
        objGraphics.Dispose();
        objBMP.Dispose();
    }
    //图片上传
    protected void btnSubmit_Click(object sender, EventArgs e)
    {
        ClearMethod();
        HttpPostedFile hpf = uploadImage.PostedFile;

        //取得文件名,不含路径
        char[]   splitChar     = { '\\' };
        string[] FilenameArray = hpf.FileName.Split(splitChar);
        string   Filename      = FilenameArray[FilenameArray.Length - 1].ToLower();

        //将用户输入的水印文字处理
        //string sMessage = lineStr(TextBox3.Text.Trim().ToString(), 20);

        if (hpf.FileName.Length < 1)
        {
            panelAttention.Visible = true;
            lbAttention.Text       = "请选择你要上传的图片文件";
            return;
        }
        if (hpf.ContentType != "image/jpeg" && hpf.ContentType != "image/gif")
        {
            panelAttention.Visible = true;
            lbAttention.Text       = "只允许上传JPEG GIF文件";
            return;
        }
        else
        {
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            sb.Append(DateTime.Now.Year.ToString());
            sb.Append(DateTime.Now.Month.ToString());
            sb.Append(DateTime.Now.Day.ToString());
            sb.Append(DateTime.Now.Hour.ToString());
            sb.Append(DateTime.Now.Minute.ToString());
            sb.Append(DateTime.Now.Second.ToString());

            if (Filename.ToLower().EndsWith("gif"))
            {
                sb.Append(".gif");
            }
            else if (Filename.ToLower().EndsWith("jpg"))
            {
                sb.Append(".jpg");
            }
            else if (Filename.ToLower().EndsWith("jpeg"))
            {
                sb.Append(".jpeg");
            }
            Filename = sb.ToString();

            //保存图片到服务器上
            try
            {
                hpf.SaveAs(Server.MapPath("~") + "/images/onsale/wear/big_" + Filename);
            }
            catch (Exception ee)
            {
                panelAttention.Visible = true;
                lbAttention.Text       = "上传图片失败,原因:" + ee.Message;
                return;
            }

            //生成缩略图
            //原始图片名称
            string originalFilename = hpf.FileName;
            //生成高质量图片名称
            string strFile = Server.MapPath("~") + "/images/onsale/wear/small/small_" + Filename;

            //从文件获取图片对象
            System.Drawing.Image image = System.Drawing.Image.FromStream(hpf.InputStream, true);

            Double        Width = Double.Parse(TextBox1.Text.Trim());
            Double        Height = Double.Parse(TextBox2.Text.Trim());
            System.Double newWidth, newHeight;
            if (image.Width > image.Height)
            {
                newWidth  = Width;
                newHeight = image.Height * (newWidth / image.Width);
            }
            else
            {
                newHeight = Height;
                newWidth  = image.Width * (newHeight / image.Height);
            }
            if (newWidth > Width)
            {
                newWidth = Width;
            }
            if (newHeight > Height)
            {
                newHeight = Height;
            }
            System.Drawing.Size     size   = new System.Drawing.Size((int)newWidth, (int)newHeight); //设置图片的宽度和高度
            System.Drawing.Image    bitmap = new System.Drawing.Bitmap(size.Width, size.Height);     //新建bmp图片
            System.Drawing.Graphics g      = System.Drawing.Graphics.FromImage(bitmap);              //新建画板
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;                   //制定高质量插值法
            g.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;                //设置高质量、低速度呈现平滑程度
            g.Clear(System.Drawing.Color.White);                                                     //清空画布
            //在制定位置画图
            g.DrawImage(image, new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height), new System.Drawing.Rectangle(0, 0, image.Width, image.Height), System.Drawing.GraphicsUnit.Pixel);


            //文字水印
            System.Drawing.Graphics testGrahpics = System.Drawing.Graphics.FromImage(bitmap);
            System.Drawing.Font     font         = new System.Drawing.Font("宋体", 10);
            System.Drawing.Brush    brush        = new System.Drawing.SolidBrush(System.Drawing.Color.Black);

            //分行
            string sInput = TextBox3.Text.Trim().ToString(); //获取输入的水印文字
            int    coloum = Convert.ToInt32(TextBox4.Text);  //获取每行的字符数
            //利用循环,来依次输出
            for (int i = 0, j = 0; i < sInput.Length; i += coloum, j++)
            {
                //若要修改水印文字在照片上的位置,可将20修改成你想要的任何值
                if (j != sInput.Length / coloum)
                {
                    string s = sInput.Substring(i, coloum);
                    testGrahpics.DrawString(s, font, brush, 20, 20 * (i / coloum + 1));
                }
                else
                {
                    string s = sInput.Substring(i, sInput.Length % coloum);
                    testGrahpics.DrawString(s, font, brush, 20, 20 * (j + 1));
                }
            }
            testGrahpics.Dispose();
            //保存缩略图c
            try
            {
                bitmap.Save(strFile, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            catch (Exception ex)
            {
                paneInfo.Visible = true;
                lbInfo.Text      = "保存缩略图失败" + ex.Message;
            }
            //释放资源
            g.Dispose();
            bitmap.Dispose();
            image.Dispose();
        }

        Entity.PicturesItem pic = new Entity.PicturesItem();
        pic.setItemID(int.Parse(lbItemId.Text));
        // pic.setIntImageID(int.Parse(lbImageID.Text));
        pic.setBigImg("images/onsale/wear/big_" + Filename);
        pic.setSmallImg("images/onsale/wear/small/small_" + Filename);
        pic.setAlt("");

        switch (btnSubmit.Text)
        {
        case "新增":    //新增模式
            if (picture.InserItemsPic(pic))
            {
                panelSuccess.Visible = true;
                lbSuccess.Text       = "新增图片成功!";
            }
            else
            {
                panelError.Visible = true;
                lbError.Text       = "新增图片失败!";
            }
            break;

        case "修改":    //修改模式
            //int.Parse(lbImageID.Text), int.Parse(lbItemId.Text), "images/onsale/wear/big_" + Filename, "images/onsale/wear/small/small_" + Filename, ""
            if (picture.UpdatePicByID(pic))
            {
                panelSuccess.Visible = true;
                lbSuccess.Text       = "修改图片成功!";
            }
            else
            {
                panelError.Visible = true;
                lbError.Text       = "修改图片失败!";
            }
            break;
        }
    }
Example #40
0
        /// <summary>
        /// 图片等比缩放并添加水印
        /// </summary>
        /// <param name="postedFile">原图HttpPostedFile对象</param>
        /// <param name="savePath">缩略图存放地址</param>
        /// <param name="targetWidth">指定的最大宽度</param>
        /// <param name="targetHeight">指定的最大高度</param>
        /// <param name="watermarkText">水印文字(为""表示不使用水印)</param>
        /// <param name="watermarkImage">水印图片路径(为""表示不使用水印)</param>
        /// <param name="waterTextFont">文字水印字体</param>
        public static void ZoomAuto(System.Web.HttpPostedFile postedFile, string savePath, System.Double targetWidth, System.Double targetHeight, string watermarkText, string watermarkImage, Font waterTextFont)
        {
            //创建目录
            string dir = Path.GetDirectoryName(savePath);

            if (!Directory.Exists(dir))
            {
                Directory.CreateDirectory(dir);
            }

            if (waterTextFont == null)
            {
                waterTextFont = new Font("黑体", 14, GraphicsUnit.Pixel);
            }


            //原始图片(获取原始图片创建对象,并使用流中嵌入的颜色管理信息)
            System.Drawing.Image initImage = System.Drawing.Image.FromStream(postedFile.InputStream, true);

            //原图宽高均小于模版,不作处理,直接保存
            if (initImage.Width <= targetWidth && initImage.Height <= targetHeight)
            {
                //文字水印
                if (watermarkText != "")
                {
                    using (System.Drawing.Graphics gWater = System.Drawing.Graphics.FromImage(initImage))
                    {
                        System.Drawing.Font  fontWater  = waterTextFont;
                        System.Drawing.Brush brushWater = new SolidBrush(Color.White);
                        gWater.DrawString(watermarkText, fontWater, brushWater, 10, 10);
                        gWater.Dispose();
                    }
                }

                //透明图片水印
                if (watermarkImage != "")
                {
                    if (File.Exists(watermarkImage))
                    {
                        //获取水印图片
                        using (System.Drawing.Image wrImage = System.Drawing.Image.FromFile(watermarkImage))
                        {
                            //水印绘制条件:原始图片宽高均大于或等于水印图片
                            if (initImage.Width >= wrImage.Width && initImage.Height >= wrImage.Height)
                            {
                                Graphics gWater = Graphics.FromImage(initImage);

                                //透明属性
                                ImageAttributes imgAttributes = new ImageAttributes();
                                ColorMap        colorMap      = new ColorMap();
                                colorMap.OldColor = Color.FromArgb(255, 0, 255, 0);
                                colorMap.NewColor = Color.FromArgb(0, 0, 0, 0);
                                ColorMap[] remapTable = { colorMap };
                                imgAttributes.SetRemapTable(remapTable, ColorAdjustType.Bitmap);

                                float[][] colorMatrixElements =
                                {
                                    new float[] { 1.0f, 0.0f, 0.0f, 0.0f, 0.0f },
                                    new float[] { 0.0f, 1.0f, 0.0f, 0.0f, 0.0f },
                                    new float[] { 0.0f, 0.0f, 1.0f, 0.0f, 0.0f },
                                    new float[] { 0.0f, 0.0f, 0.0f, 0.5f, 0.0f },//透明度:0.5
                                    new float[] { 0.0f, 0.0f, 0.0f, 0.0f, 1.0f }
                                };

                                ColorMatrix wmColorMatrix = new ColorMatrix(colorMatrixElements);
                                imgAttributes.SetColorMatrix(wmColorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
                                gWater.DrawImage(wrImage, new Rectangle(initImage.Width - wrImage.Width, initImage.Height - wrImage.Height, wrImage.Width, wrImage.Height), 0, 0, wrImage.Width, wrImage.Height, GraphicsUnit.Pixel, imgAttributes);

                                gWater.Dispose();
                            }
                            wrImage.Dispose();
                        }
                    }
                }

                //保存
                initImage.Save(savePath, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            else
            {
                //缩略图宽、高计算
                double newWidth  = initImage.Width;
                double newHeight = initImage.Height;

                //宽大于高或宽等于高(横图或正方)
                if (initImage.Width > initImage.Height || initImage.Width == initImage.Height)
                {
                    //如果宽大于模版
                    if (initImage.Width > targetWidth)
                    {
                        //宽按模版,高按比例缩放
                        newWidth  = targetWidth;
                        newHeight = initImage.Height * (targetWidth / initImage.Width);
                    }
                }
                //高大于宽(竖图)
                else
                {
                    //如果高大于模版
                    if (initImage.Height > targetHeight)
                    {
                        //高按模版,宽按比例缩放
                        newHeight = targetHeight;
                        newWidth  = initImage.Width * (targetHeight / initImage.Height);
                    }
                }

                //生成新图
                //新建一个bmp图片
                System.Drawing.Image newImage = new System.Drawing.Bitmap((int)newWidth, (int)newHeight);
                //新建一个画板
                System.Drawing.Graphics newG = System.Drawing.Graphics.FromImage(newImage);

                //设置质量
                newG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                newG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

                //置背景色
                newG.Clear(Color.White);
                //画图
                newG.DrawImage(initImage, new System.Drawing.Rectangle(0, 0, newImage.Width, newImage.Height), new System.Drawing.Rectangle(0, 0, initImage.Width, initImage.Height), System.Drawing.GraphicsUnit.Pixel);

                //文字水印
                if (watermarkText != "")
                {
                    using (System.Drawing.Graphics gWater = System.Drawing.Graphics.FromImage(newImage))
                    {
                        System.Drawing.Font  fontWater  = waterTextFont;
                        System.Drawing.Brush brushWater = new SolidBrush(Color.White);
                        gWater.DrawString(watermarkText, fontWater, brushWater, 10, 10);
                        gWater.Dispose();
                    }
                }

                //透明图片水印
                if (watermarkImage != "")
                {
                    if (File.Exists(watermarkImage))
                    {
                        //获取水印图片
                        using (System.Drawing.Image wrImage = System.Drawing.Image.FromFile(watermarkImage))
                        {
                            //水印绘制条件:原始图片宽高均大于或等于水印图片
                            if (newImage.Width >= wrImage.Width && newImage.Height >= wrImage.Height)
                            {
                                Graphics gWater = Graphics.FromImage(newImage);

                                //透明属性
                                ImageAttributes imgAttributes = new ImageAttributes();
                                ColorMap        colorMap      = new ColorMap();
                                colorMap.OldColor = Color.FromArgb(255, 0, 255, 0);
                                colorMap.NewColor = Color.FromArgb(0, 0, 0, 0);
                                ColorMap[] remapTable = { colorMap };
                                imgAttributes.SetRemapTable(remapTable, ColorAdjustType.Bitmap);

                                float[][] colorMatrixElements =
                                {
                                    new float[] { 1.0f, 0.0f, 0.0f, 0.0f, 0.0f },
                                    new float[] { 0.0f, 1.0f, 0.0f, 0.0f, 0.0f },
                                    new float[] { 0.0f, 0.0f, 1.0f, 0.0f, 0.0f },
                                    new float[] { 0.0f, 0.0f, 0.0f, 0.5f, 0.0f },//透明度:0.5
                                    new float[] { 0.0f, 0.0f, 0.0f, 0.0f, 1.0f }
                                };

                                ColorMatrix wmColorMatrix = new ColorMatrix(colorMatrixElements);
                                imgAttributes.SetColorMatrix(wmColorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
                                gWater.DrawImage(wrImage, new Rectangle(newImage.Width - wrImage.Width, newImage.Height - wrImage.Height, wrImage.Width, wrImage.Height), 0, 0, wrImage.Width, wrImage.Height, GraphicsUnit.Pixel, imgAttributes);
                                gWater.Dispose();
                            }
                            wrImage.Dispose();
                        }
                    }
                }

                //保存缩略图
                newImage.Save(savePath, System.Drawing.Imaging.ImageFormat.Jpeg);

                //释放资源
                newG.Dispose();
                newImage.Dispose();
                initImage.Dispose();
            }
        }
Example #41
0
        /// <summary>
        /// 缩小图片
        /// </summary>
        /// <param name="bitmap"></param>
        /// <param name="w"></param>
        /// <param name="h"></param>
        /// <param name="mode"></param>
        /// <returns></returns>
        public static Image TBScaleBitmap(Image bitmap, int w, int h, string mode)
        {
            Bitmap map = new Bitmap(w, h);

            System.Drawing.Graphics gra = System.Drawing.Graphics.FromImage(map);
            gra.Clear(System.Drawing.Color.Transparent);                               //清空画布并以透明背景色填充
            gra.SmoothingMode      = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; //使绘图质量最高,即消除锯齿
            gra.InterpolationMode  = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
            gra.SmoothingMode      = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            gra.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
            gra.TextRenderingHint  = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;

            int towidth  = w;
            int toheight = h;

            int x  = 0;
            int y  = 0;
            int ow = bitmap.Width;
            int oh = bitmap.Height;



            switch (mode)
            {
            case "HW":      //指定高宽缩放(可能变形)
                break;

            case "W":       //指定宽,高按比例
                toheight = bitmap.Height * w / bitmap.Width;
                break;

            case "H":       //指定高,宽按比例
                towidth = bitmap.Width * h / bitmap.Height;
                break;

            case "Cut":     //指定高宽裁减(不变形)
                if ((double)bitmap.Width / (double)bitmap.Height > (double)towidth / (double)toheight)
                {
                    oh = bitmap.Height;
                    ow = bitmap.Height * towidth / toheight;
                    y  = 0;
                    x  = (bitmap.Width - ow) / 2;
                }
                else
                {
                    ow = bitmap.Width;
                    oh = bitmap.Width * h / towidth;
                    x  = 0;
                    y  = (bitmap.Height - oh) / 2;
                }
                break;

            case "MaxHW":    //最大宽高比例缩放,比如原100*50->50*30,则结果是50*25
                var rmaxhw_d1w = bitmap.Width * 1.0 / w;
                var rmaxhw_d2h = bitmap.Height * 1.0 / h;
                if (rmaxhw_d1w > rmaxhw_d2h)
                {
                    if (rmaxhw_d1w <= 1)
                    {
                        towidth = bitmap.Width; h = bitmap.Height;
                        goto case "HW";
                    }
                    towidth = w;
                    goto case "W";
                }
                if (rmaxhw_d2h <= 1)
                {
                    towidth = bitmap.Width; h = bitmap.Height;
                    goto case "HW";
                }
                toheight = h;
                goto case "H";

            default:
                break;
            }

            gra.DrawImage(bitmap, new System.Drawing.Rectangle(0, 0, towidth, toheight), new System.Drawing.Rectangle(x, y, ow, oh), System.Drawing.GraphicsUnit.Pixel);

            gra.Flush();
            gra.Dispose();
            bitmap.Dispose();
            return(map);
        }
Example #42
0
 public override System.Drawing.Bitmap GetNext()
 {
     System.Drawing.Bitmap result;
     lock (this.newBitmap)
     {
         lock (this.oldBitmap)
         {
             if (this.nowState == MarqueeDisplayState.First)
             {
                 this.nowPositionF += this.step;
                 if (this.nowPositionF > (float)((this.newBitmap.Height + this.newBitmap.Width) / 2))
                 {
                     this.nowState = MarqueeDisplayState.Stay;
                 }
                 this.nowPosition = (int)this.nowPositionF;
                 this.getPoint1(this.nowPosition);
                 this.getPoint2(this.nowPosition);
                 this.getPoint3(this.nowPosition);
                 this.getPoint4(this.nowPosition);
             }
             else
             {
                 if (this.nowState == MarqueeDisplayState.Stay)
                 {
                     this.StayNum += 42;
                     if (this.StayNum > this.effect.Stay)
                     {
                         if (this.effect.ExitMode == 0)
                         {
                             result = null;
                             return(result);
                         }
                         this.nowState = MarqueeDisplayState.Exit;
                     }
                     result = new System.Drawing.Bitmap(this.newBitmap);
                     return(result);
                 }
                 if (this.nowState == MarqueeDisplayState.Exit)
                 {
                     result = this.Exit.GetNext();
                     return(result);
                 }
             }
             System.Drawing.Bitmap   bitmap    = new System.Drawing.Bitmap(this.oldBitmap);
             System.Drawing.Graphics graphics  = System.Drawing.Graphics.FromImage(bitmap);
             System.Drawing.Bitmap   image     = new System.Drawing.Bitmap(this.newBitmap);
             System.Drawing.Graphics graphics2 = System.Drawing.Graphics.FromImage(image);
             System.Drawing.Drawing2D.GraphicsPath graphicsPath = new System.Drawing.Drawing2D.GraphicsPath();
             graphicsPath.AddPolygon(this.pa1);
             graphics2.SetClip(graphicsPath);
             graphics2.Clear(System.Drawing.Color.Transparent);
             graphicsPath.ClearMarkers();
             graphicsPath.AddPolygon(this.pa2);
             graphics2.SetClip(graphicsPath);
             graphics2.Clear(System.Drawing.Color.Transparent);
             graphicsPath.ClearMarkers();
             graphicsPath.AddPolygon(this.pa3);
             graphics2.SetClip(graphicsPath);
             graphics2.Clear(System.Drawing.Color.Transparent);
             graphicsPath.ClearMarkers();
             graphicsPath.AddPolygon(this.pa4);
             graphics2.SetClip(graphicsPath);
             graphics2.Clear(System.Drawing.Color.Transparent);
             graphics.DrawImage(image, new System.Drawing.Point(0, 0));
             result = bitmap;
         }
     }
     return(result);
 }
Example #43
0
        /// <summary>
        /// 生成缩略图
        /// </summary>
        /// <param name="originalImagePath">源图路径(物理路径)</param>
        /// <param name="thumbnailPath">缩略图路径(物理路径)</param>
        /// <param name="width">缩略图宽度</param>
        /// <param name="height">缩略图高度</param>
        /// <param name="thumbnailMode">生成缩略图的方式</param>
        public static void MakeThumbnail(string originalImagePath, string thumbnailPath, int width, int height, ThumbnailMode thumbnailMode)
        {
            System.Drawing.Image originalImage = System.Drawing.Image.FromFile(originalImagePath);

            int towidth  = width;
            int toheight = height;

            int x  = 0;
            int y  = 0;
            int ow = originalImage.Width;
            int oh = originalImage.Height;

            switch (thumbnailMode)
            {
            case ThumbnailMode.None:
                if (ow > oh)
                {
                    toheight = originalImage.Height * width / originalImage.Width;
                }
                else if (oh > ow)
                {
                    towidth = originalImage.Width * height / originalImage.Height;
                }
                break;

            case ThumbnailMode.HW:    //指定高宽缩放(可能变形)
                break;

            case ThumbnailMode.W:    //指定宽,高按比例
                toheight = originalImage.Height * width / originalImage.Width;
                break;

            case ThumbnailMode.H:    //指定高,宽按比例
                towidth = originalImage.Width * height / originalImage.Height;
                break;

            case ThumbnailMode.Cut:    //指定高宽裁减(不变形)
                if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight)
                {
                    oh = originalImage.Height;
                    ow = originalImage.Height * towidth / toheight;
                    y  = 0;
                    x  = (originalImage.Width - ow) / 2;
                }
                else
                {
                    ow = originalImage.Width;
                    oh = originalImage.Width * height / towidth;
                    x  = 0;
                    y  = (originalImage.Height - oh) / 2;
                }
                break;

            default:
                break;
            }

            System.Drawing.Image    bitmap = new System.Drawing.Bitmap(towidth, toheight);
            System.Drawing.Graphics g      = System.Drawing.Graphics.FromImage(bitmap);
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
            g.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            g.Clear(System.Drawing.Color.Transparent);
            g.DrawImage(originalImage, new System.Drawing.Rectangle(0, 0, towidth, toheight), new System.Drawing.Rectangle(x, y, ow, oh), System.Drawing.GraphicsUnit.Pixel);

            try
            {
                thumbnailPath = thumbnailPath.Replace("/", "\\");
                string savePath = thumbnailPath.Substring(0, thumbnailPath.LastIndexOf("\\"));
                if (!Directory.Exists(savePath))
                {
                    Directory.CreateDirectory(savePath);
                }
                bitmap.Save(thumbnailPath, GetImageFormat(thumbnailPath));
            }
            catch (System.Exception e)
            {
                throw e;
            }
            finally
            {
                originalImage.Dispose();
                bitmap.Dispose();
                g.Dispose();
            }
        }
Example #44
0
        /// <summary>
        /// 生成缩略图(最终图片固定大小,图片按比例缩小,并为缩略图加上边框,以jpg格式保存)
        /// </summary>
        /// <param name="sourceImg">原图片(物理路径)</param>
        /// <param name="toPath">缩略图存放地址(物理路径,带文件名)</param>
        /// <param name="width">缩略图宽度</param>
        /// <param name="height">缩略图高度</param>
        /// <param name="backColor">如果图片按比例缩小后不能填充满缩略图,则使用此颜色填充(比如"#FFFFFF")</param>
        public static void MakePic(string sourceImg, string toPath, int width, int height, string backColor)
        {
            System.Drawing.Image originalImage = System.Drawing.Image.FromFile(sourceImg);
            int    towidth  = width;
            int    toheight = height;
            int    x        = 0;
            int    y        = 0;
            int    ow       = originalImage.Width;
            int    oh       = originalImage.Height;
            string mode;

            if (ow < towidth && oh < toheight)
            {
                towidth  = ow;
                toheight = oh;
            }
            else
            {
                if (originalImage.Width / originalImage.Height >= width / height)
                {
                    mode = "W";
                }
                else
                {
                    mode = "H";
                }
                switch (mode)
                {
                case "W":    //指定宽,高按比例
                    toheight = originalImage.Height * width / originalImage.Width;
                    break;

                case "H":    //指定高,宽按比例
                    towidth = originalImage.Width * height / originalImage.Height;
                    break;

                default:
                    break;
                }
            }
            //新建一个bmp图片
            System.Drawing.Image bitmap = new System.Drawing.Bitmap(width, height);
            //新建一个画板
            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
            //设置高质量插值法
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
            //设置高质量,低速度呈现平滑程度
            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            //清空画布并以指定颜色填充
            g.Clear(ColorTranslator.FromHtml(backColor));
            //在指定位置并且按指定大小绘制原图片的指定部分
            int top  = (height - toheight) / 2;
            int left = (width - towidth) / 2;

            g.DrawImage(originalImage, new System.Drawing.Rectangle(left, top, towidth, toheight),
                        new System.Drawing.Rectangle(x, y, ow, oh),
                        System.Drawing.GraphicsUnit.Pixel);
            //Pen pen = new Pen(ColorTranslator.FromHtml(borderColor));
            //g.DrawRectangle(pen, 0, 0, width - 1, height - 1);
            try
            {
                //以jpg格式保存缩略图
                bitmap.Save(toPath, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            catch (System.Exception e)
            {
                throw e;
            }
            finally
            {
                originalImage.Dispose();
                bitmap.Dispose();
                g.Dispose();
            }
        }
Example #45
0
        /// <summary>
        /// 正方型裁剪
        /// 以图片中心为轴心,截取正方型,然后等比缩放
        /// 用于头像处理
        /// </summary>
        /// <param name="postedFile">原图HttpPostedFile对象</param>
        /// <param name="fileSaveUrl">缩略图存放地址</param>
        /// <param name="side">指定的边长(正方型)</param>
        /// <param name="quality">质量(范围0-100)</param>
        public static void CutForSquare(System.Web.HttpPostedFile postedFile, string fileSaveUrl, int side, int quality)
        {
            //创建目录
            string dir = Path.GetDirectoryName(fileSaveUrl);

            if (!Directory.Exists(dir))
            {
                Directory.CreateDirectory(dir);
            }

            //原始图片(获取原始图片创建对象,并使用流中嵌入的颜色管理信息)
            System.Drawing.Image initImage = System.Drawing.Image.FromStream(postedFile.InputStream, true);

            //原图宽高均小于模版,不作处理,直接保存
            if (initImage.Width <= side && initImage.Height <= side)
            {
                initImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            else
            {
                //原始图片的宽、高
                int initWidth  = initImage.Width;
                int initHeight = initImage.Height;

                //非正方型先裁剪为正方型
                if (initWidth != initHeight)
                {
                    //截图对象
                    System.Drawing.Image    pickedImage = null;
                    System.Drawing.Graphics pickedG     = null;

                    //宽大于高的横图
                    if (initWidth > initHeight)
                    {
                        //对象实例化
                        pickedImage = new System.Drawing.Bitmap(initHeight, initHeight);
                        pickedG     = System.Drawing.Graphics.FromImage(pickedImage);
                        //设置质量
                        pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                        pickedG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                        //定位
                        Rectangle fromR = new Rectangle((initWidth - initHeight) / 2, 0, initHeight, initHeight);
                        Rectangle toR   = new Rectangle(0, 0, initHeight, initHeight);
                        //画图
                        pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
                        //重置宽
                        initWidth = initHeight;
                    }
                    //高大于宽的竖图
                    else
                    {
                        //对象实例化
                        pickedImage = new System.Drawing.Bitmap(initWidth, initWidth);
                        pickedG     = System.Drawing.Graphics.FromImage(pickedImage);
                        //设置质量
                        pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                        pickedG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                        //定位
                        Rectangle fromR = new Rectangle(0, (initHeight - initWidth) / 2, initWidth, initWidth);
                        Rectangle toR   = new Rectangle(0, 0, initWidth, initWidth);
                        //画图
                        pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
                        //重置高
                        initHeight = initWidth;
                    }

                    //将截图对象赋给原图
                    initImage = (System.Drawing.Image)pickedImage.Clone();
                    //释放截图资源
                    pickedG.Dispose();
                    pickedImage.Dispose();
                }

                //缩略图对象
                System.Drawing.Image    resultImage = new System.Drawing.Bitmap(side, side);
                System.Drawing.Graphics resultG     = System.Drawing.Graphics.FromImage(resultImage);
                //设置质量
                resultG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                resultG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                //用指定背景色清空画布
                resultG.Clear(Color.White);
                //绘制缩略图
                resultG.DrawImage(initImage, new System.Drawing.Rectangle(0, 0, side, side), new System.Drawing.Rectangle(0, 0, initWidth, initHeight), System.Drawing.GraphicsUnit.Pixel);

                //关键质量控制
                //获取系统编码类型数组,包含了jpeg,bmp,png,gif,tiff
                ImageCodecInfo[] icis = ImageCodecInfo.GetImageEncoders();
                ImageCodecInfo   ici  = null;
                foreach (ImageCodecInfo i in icis)
                {
                    if (i.MimeType == "image/jpeg" || i.MimeType == "image/bmp" || i.MimeType == "image/png" || i.MimeType == "image/gif")
                    {
                        ici = i;
                    }
                }
                EncoderParameters ep = new EncoderParameters(1);
                ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)quality);

                //保存缩略图
                resultImage.Save(fileSaveUrl, ici, ep);

                //释放关键质量控制所用资源
                ep.Dispose();

                //释放缩略图资源
                resultG.Dispose();
                resultImage.Dispose();

                //释放原始图片资源
                initImage.Dispose();
            }
        }
Example #46
0
        /// <summary>
        /// Draw all entities stored in buffer
        /// </summary>
        public void Flush()
        {
            // initialize
            Vector3D vLight = _vCameraPos - _vTarget; vLight.Normalize();

            _boxDrawingCounter = 0;
            _currentTransf     = null;
            System.Drawing.Graphics g = Graphics;
            g.Clear(_backgroundColor);

            if (EnableFaceSorting)
            {
                // sort face list
                FaceComparison faceComparer = new FaceComparison(GetWorldToEyeTransformation());
                _faces.Sort(faceComparer);
            }
            // draw background segments
            foreach (Segment s in _segmentsBackground)
            {
                Draw(s);
            }
            // draw background faces
            foreach (Face face in _facesBackground)
            {
                Draw(face, FaceDir.FRONT);
            }
            // draw all faces using solid / transparency depending on
            foreach (Face face in _faces)
            {
                Draw(face, FaceDir.BACK);
            }

            // sort box list
            if (_useBoxelOrderer)
            {
                BoxelOrderer boxelOrderer = new BoxelOrderer(_boxes);
                boxelOrderer.Direction = _vTarget - _vCameraPos;
                _boxes = boxelOrderer.GetSortedList();
            }
            else
            {
                _boxes.Sort(new BoxComparerSimplifiedPainterAlgo(GetWorldToEyeTransformation()));
            }

            // sort cylinder list
            _cylinders.Sort(new CylinderComparerSimplifiedPainterAlgo(GetWorldToEyeTransformation()));

            if (_cylinders.Count > 0)
            {
                // sort by Z
                List <Drawable> drawableList = new List <Drawable>();
                drawableList.AddRange(_boxes);
                drawableList.AddRange(_cylinders);
                drawableList.Sort(new DrawableComparerSimplifiedPainterAlgo());

                List <Box>      boxes         = new List <Box>();
                List <Cylinder> cylinders     = new List <Cylinder>();
                bool            processingBox = drawableList[0] is Box;
                foreach (Drawable drawable in drawableList)
                {
                    Box      b = drawable as Box;
                    Cylinder c = drawable as Cylinder;

                    if ((null != b) && processingBox)
                    {
                        boxes.Add(b);
                    }
                    else if ((null == b) && !processingBox)
                    {
                        cylinders.Add(c);
                    }
                    else
                    {
                        if (boxes.Count > 0)
                        {
                            BoxelOrderer boxelOrderer = new BoxelOrderer(boxes);
                            boxelOrderer.Direction = _vTarget - _vCameraPos;
                            boxes = boxelOrderer.GetSortedList();
                            // draw boxes
                            foreach (Box bb in boxes)
                            {
                                Draw(bb);
                            }
                            // clear
                            boxes.Clear();
                        }
                        if (cylinders.Count > 0)
                        {
                            cylinders.Sort(new CylinderComparerSimplifiedPainterAlgo(GetWorldToEyeTransformation()));
                            // draw cylinders
                            foreach (Cylinder cc in cylinders)
                            {
                                Draw(cc);
                            }
                            // clear
                            cylinders.Clear();
                        }
                        if (null != b)
                        {
                            boxes.Add(b);
                            processingBox = true;
                        }
                        else
                        {
                            cylinders.Add(c);
                            processingBox = false;
                        }
                    }
                }

                // remaining boxes
                BoxelOrderer boxelOrdererRem = new BoxelOrderer(boxes);
                boxelOrdererRem.Direction = _vTarget - _vCameraPos;
                boxes = boxelOrdererRem.GetSortedList();
                // draw boxes
                foreach (Box bb in boxes)
                {
                    Draw(bb);
                }

                // remaining cylinders
                cylinders.Sort(new CylinderComparerSimplifiedPainterAlgo(GetWorldToEyeTransformation()));
                // draw cylinders
                foreach (Cylinder cc in cylinders)
                {
                    Draw(cc);
                }
                // clear
                boxes.Clear();
            }
            else
            {
                // draw all boxes
                foreach (Box box in _boxes)
                {
                    Draw(box);
                }
            }
            // images inst
            if (_listImageInst.Count > 0)
            {
                // --- sort image inst
                Analysis   analysis   = _listImageInst[0].Analysis;
                BBox3D     bbox       = analysis.Solution.BBoxGlobal;
                List <Box> boxesImage = new List <Box>();
                foreach (ImageInst imageInst in _listImageInst)
                {
                    boxesImage.Add(imageInst.ToBox());
                }

                if (_useBoxelOrderer && false) // NOT WORKING ?
                {
                    BoxelOrderer boxelOrderer = new BoxelOrderer(boxesImage);
                    boxelOrderer.TuneParam = 10.0;
                    boxelOrderer.Direction = _vTarget - _vCameraPos;
                    boxesImage             = boxelOrderer.GetSortedList();
                }
                else
                {
                    boxesImage.Sort(new BoxComparerSimplifiedPainterAlgo(GetWorldToEyeTransformation()));
                }
                // ---

                List <ImageInst> listImageInstSorted = new List <ImageInst>();
                foreach (Box b in boxesImage)
                {
                    listImageInstSorted.Add(new ImageInst(analysis, new Vector3D(b.Length, b.Width, b.Height), b.BPosition));
                }

                // draw image inst
                foreach (ImageInst im in listImageInstSorted)
                {
                    Draw(im);
                }
            }
            // draw faces : end
            foreach (Face face in _faces)
            {
                Draw(face, FaceDir.FRONT);
            }

            // draw segment list (e.g. hatching)
            foreach (Segment seg in _segments)
            {
                Draw(seg);
            }

            // draw cotation cubes
            if (ShowDimensions)
            {
                foreach (DimensionCube qc in _dimensions)
                {
                    qc.Draw(this);
                }
            }
        }
Example #47
0
    // originally from https://stackoverflow.com/questions/2042155/high-quality-graph-waveform-display-component-in-c-sharp,
    // adapted to use the pcm_f32le format and replace GDI+ with WPF drawing
    private BitmapSource _Draw_GDI(CancellationToken ct, double height, double width)
    {
        isDrawing       = true;
        reader.Position = 0;
        int bytesPerSample = (reader.WaveFormat.BitsPerSample / 8) * reader.WaveFormat.Channels;

        //Give a size to the bitmap; either a fixed size, or something based on the length of the audio
        System.Drawing.Bitmap   bitmap   = new System.Drawing.Bitmap((int)width, (int)height);
        System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(bitmap);
        graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighSpeed;
        graphics.Clear(System.Drawing.Color.Transparent);
        System.Drawing.Pen bluePen = new System.Drawing.Pen(Constants.Editor.Waveform.ColourGDI);

        int samplesPerPixel = (int)(reader.Length / (double)(height * bytesPerSample));
        int bytesPerPixel   = bytesPerSample * samplesPerPixel;
        int bytesRead;

        byte[] waveData = new byte[bytesPerPixel];
        // draw each pixel of height
        for (int y = 0; y < height; y++)
        {
            bytesRead = reader.Read(waveData, 0, bytesPerPixel);
            if (bytesRead == 0)
            {
                break;
            }

            float low  = 0;
            float high = 0;
            // read all samples for this pixel and take the extreme values
            for (int n = 0; n < bytesRead; n += bytesPerSample)
            {
                float sample = BitConverter.ToSingle(waveData, n);
                if (sample < low)
                {
                    low = sample;
                }
                if (sample > high)
                {
                    high = sample;
                }
                if (ct.IsCancellationRequested)
                {
                    isDrawing = false;
                    return(null);
                }
            }
            float lowPercent  = (low + 1) / 2;
            float highPercent = (high + 1) / 2;
            float lowValue    = (float)width * lowPercent;
            float highValue   = (float)width * highPercent;
            graphics.DrawLine(bluePen, lowValue, (int)height - y, highValue, (int)height - y);
        }
        //bitmap.Save("out.bmp");
        // https://stackoverflow.com/questions/94456/load-a-wpf-bitmapimage-from-a-system-drawing-bitmap#1069509
        BitmapSource b = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(bitmap.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromWidthAndHeight((int)width, (int)height));

        b.Freeze();
        isDrawing = false;
        return(b);
    }
    private void CreateCheckCodeImage(string checkCode)
    {
        if (checkCode == null || checkCode.Trim() == String.Empty)
        {
            return;
        }

        System.Drawing.Bitmap   image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 15.0 + 40)), 23);
        System.Drawing.Graphics g     = System.Drawing.Graphics.FromImage(image);

        try
        {
            //生成随机生成器
            Random random = new Random();

            //清空图片背景色
            g.Clear(System.Drawing.Color.White);

            //画图片的背景噪音线
            for (int i = 0; i < 25; i++)
            {
                int x1 = random.Next(image.Width);
                int x2 = random.Next(image.Width);
                int y1 = random.Next(image.Height);
                int y2 = random.Next(image.Height);

                g.DrawLine(new System.Drawing.Pen(System.Drawing.Color.Silver), x1, y1, x2, y2);
            }

            System.Drawing.Font font = new System.Drawing.Font("Arial", 14, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic));
            System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(new System.Drawing.Rectangle(0, 0, image.Width, image.Height), System.Drawing.Color.Blue, System.Drawing.Color.DarkRed, 1.2f, true);

            int cySpace = 16;
            for (int i = 0; i < validateCodeCount; i++)
            {
                g.DrawString(checkCode.Substring(i, 1), font, brush, (i + 1) * cySpace, 1);
            }

            //画图片的前景噪音点
            for (int i = 0; i < 100; i++)
            {
                int x = random.Next(image.Width);
                int y = random.Next(image.Height);

                image.SetPixel(x, y, System.Drawing.Color.FromArgb(random.Next()));
            }

            //画图片的边框线
            g.DrawRectangle(new System.Drawing.Pen(System.Drawing.Color.Silver), 0, 0, image.Width - 1, image.Height - 1);

            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
            Response.ClearContent();
            Response.ContentType = "image/Gif";
            Response.BinaryWrite(ms.ToArray());
        }
        finally
        {
            g.Dispose();
            image.Dispose();
        }
    }
Example #49
0
    /// <summary>
    /// 生成缩略图
    /// </summary>
    /// <param name="originalImagePath">源图路径(物理路径)</param>
    /// <param name="thumbnailPath">缩略图路径(物理路径)</param>
    /// <param name="width">缩略图宽度</param>
    /// <param name="height">缩略图高度</param>
    /// <param name="mode">生成缩略图的方式</param>
    public static void MakeThumbnail(string originalImagePath, string thumbnailPath, int width, int height, string mode)
    {
        System.Drawing.Image originalImage = System.Drawing.Image.FromFile(originalImagePath);

        int towidth  = width;
        int toheight = height;

        int x  = 0;
        int y  = 0;
        int ow = originalImage.Width;
        int oh = originalImage.Height;

        switch (mode)
        {
        case "HW":    //指定高宽缩放(可能变形)
            break;

        case "W":    //指定宽,高按比例
            toheight = originalImage.Height * width / originalImage.Width;
            break;

        case "H":    //指定高,宽按比例
            towidth = originalImage.Width * height / originalImage.Height;
            break;

        case "Cut":    //指定高宽裁减(不变形)
            if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight)
            {
                oh = originalImage.Height;
                ow = originalImage.Height * towidth / toheight;
                y  = 0;
                x  = (originalImage.Width - ow) / 2;
            }
            else
            {
                ow = originalImage.Width;
                oh = originalImage.Width * height / towidth;
                x  = 0;
                y  = (originalImage.Height - oh) / 2;
            }
            break;

        default:
            break;
        }

        //新建一个bmp图片
        System.Drawing.Image bitmap = new System.Drawing.Bitmap(towidth, toheight);

        //新建一个画板
        System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);

        //设置高质量插值法
        g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;

        //设置高质量,低速度呈现平滑程度
        g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

        //清空画布并以透明背景色填充
        g.Clear(System.Drawing.Color.Transparent);

        //在指定位置并且按指定大小绘制原图片的指定部分
        g.DrawImage(originalImage, new System.Drawing.Rectangle(0, 0, towidth, toheight),
                    new System.Drawing.Rectangle(x, y, ow, oh),
                    System.Drawing.GraphicsUnit.Pixel);

        try
        {
            //以jpg格式保存缩略图
            bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Jpeg);
        }
        catch (System.Exception e)
        {
            throw e;
        }
        finally
        {
            originalImage.Dispose();
            bitmap.Dispose();
            g.Dispose();
        }
    }
 void Pbox_RandomMouseLeave(object sender, EventArgs e)
 {
     formGraphics.Clear(this.BackColor);
 }
Example #51
0
        /// <summary>
        /// 指定长宽裁剪
        /// 按模版比例最大范围的裁剪图片并缩放至模版尺寸
        /// </summary>
        /// <param name="postedFile">原图HttpPostedFile对象</param>
        /// <param name="fileSaveUrl">保存路径</param>
        /// <param name="maxWidth">最大宽(单位:px)</param>
        /// <param name="maxHeight">最大高(单位:px)</param>
        /// <param name="quality">质量(范围0-100)</param>
        public static void CutForCustom(System.Web.HttpPostedFile postedFile, string fileSaveUrl, int maxWidth, int maxHeight, int quality)
        {
            //从文件获取原始图片,并使用流中嵌入的颜色管理信息
            System.Drawing.Image initImage = System.Drawing.Image.FromStream(postedFile.InputStream, true);

            //原图宽高均小于模版,不作处理,直接保存
            if (initImage.Width <= maxWidth && initImage.Height <= maxHeight)
            {
                initImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            else
            {
                //模版的宽高比例
                double templateRate = (double)maxWidth / maxHeight;
                //原图片的宽高比例
                double initRate = (double)initImage.Width / initImage.Height;

                //原图与模版比例相等,直接缩放
                if (templateRate == initRate)
                {
                    //按模版大小生成最终图片
                    System.Drawing.Image    templateImage = new System.Drawing.Bitmap(maxWidth, maxHeight);
                    System.Drawing.Graphics templateG     = System.Drawing.Graphics.FromImage(templateImage);
                    templateG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                    templateG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                    templateG.Clear(Color.White);
                    templateG.DrawImage(initImage, new System.Drawing.Rectangle(0, 0, maxWidth, maxHeight), new System.Drawing.Rectangle(0, 0, initImage.Width, initImage.Height), System.Drawing.GraphicsUnit.Pixel);
                    templateImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
                }
                //原图与模版比例不等,裁剪后缩放
                else
                {
                    //裁剪对象
                    System.Drawing.Image    pickedImage = null;
                    System.Drawing.Graphics pickedG     = null;

                    //定位
                    Rectangle fromR = new Rectangle(0, 0, 0, 0); //原图裁剪定位
                    Rectangle toR   = new Rectangle(0, 0, 0, 0); //目标定位

                    //宽为标准进行裁剪
                    if (templateRate > initRate)
                    {
                        //裁剪对象实例化
                        pickedImage = new System.Drawing.Bitmap(initImage.Width, (int)Math.Floor(initImage.Width / templateRate));
                        pickedG     = System.Drawing.Graphics.FromImage(pickedImage);

                        //裁剪源定位
                        fromR.X      = 0;
                        fromR.Y      = (int)Math.Floor((initImage.Height - initImage.Width / templateRate) / 2);
                        fromR.Width  = initImage.Width;
                        fromR.Height = (int)Math.Floor(initImage.Width / templateRate);

                        //裁剪目标定位
                        toR.X      = 0;
                        toR.Y      = 0;
                        toR.Width  = initImage.Width;
                        toR.Height = (int)Math.Floor(initImage.Width / templateRate);
                    }
                    //高为标准进行裁剪
                    else
                    {
                        pickedImage = new System.Drawing.Bitmap((int)Math.Floor(initImage.Height * templateRate), initImage.Height);
                        pickedG     = System.Drawing.Graphics.FromImage(pickedImage);

                        fromR.X      = (int)Math.Floor((initImage.Width - initImage.Height * templateRate) / 2);
                        fromR.Y      = 0;
                        fromR.Width  = (int)Math.Floor(initImage.Height * templateRate);
                        fromR.Height = initImage.Height;

                        toR.X      = 0;
                        toR.Y      = 0;
                        toR.Width  = (int)Math.Floor(initImage.Height * templateRate);
                        toR.Height = initImage.Height;
                    }

                    //设置质量
                    pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                    pickedG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

                    //裁剪
                    pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);

                    //按模版大小生成最终图片
                    System.Drawing.Image    templateImage = new System.Drawing.Bitmap(maxWidth, maxHeight);
                    System.Drawing.Graphics templateG     = System.Drawing.Graphics.FromImage(templateImage);
                    templateG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                    templateG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                    templateG.Clear(Color.White);
                    templateG.DrawImage(pickedImage, new System.Drawing.Rectangle(0, 0, maxWidth, maxHeight), new System.Drawing.Rectangle(0, 0, pickedImage.Width, pickedImage.Height), System.Drawing.GraphicsUnit.Pixel);

                    //关键质量控制
                    //获取系统编码类型数组,包含了jpeg,bmp,png,gif,tiff
                    ImageCodecInfo[] icis = ImageCodecInfo.GetImageEncoders();
                    ImageCodecInfo   ici  = null;
                    foreach (ImageCodecInfo i in icis)
                    {
                        if (i.MimeType == "image/jpeg" || i.MimeType == "image/bmp" || i.MimeType == "image/png" || i.MimeType == "image/gif")
                        {
                            ici = i;
                        }
                    }
                    EncoderParameters ep = new EncoderParameters(1);
                    ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)quality);

                    //保存缩略图
                    templateImage.Save(fileSaveUrl, ici, ep);
                    //templateImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);

                    //释放资源
                    templateG.Dispose();
                    templateImage.Dispose();

                    pickedG.Dispose();
                    pickedImage.Dispose();
                }
            }

            //释放资源
            initImage.Dispose();
        }
Example #52
0
        /// <summary>
        /// Paint.
        /// </summary>
        /// <param name="g"></param>
        /// <param name="w"></param>
        /// <param name="h"></param>
        protected void paintGraph(System.Drawing.Graphics g, int w, int h)
        {
            short         ux         = 0;
            short         lx         = 0;
            short         uy         = 0;
            short         ly         = 0;
            bool          foundFirst = false;
            List <string> legend     = new List <string>();
            List <Color>  colors     = new List <Color>();

            for (int i = 0; i < Lines.Count; i++)
            {
                if (Lines[i] == null)
                {
                    continue;
                }
                if (Lines[i].Show == false)
                {
                    continue;
                }
                if (!foundFirst)
                {
                    ux         = Lines[i].MaxX;
                    lx         = Lines[i].MinX;
                    uy         = Lines[i].MaxY;
                    ly         = Lines[i].MinY;
                    foundFirst = true;
                }
                legend.Add(Lines[i].Name);
                colors.Add(Lines[i].LineColor);
                ux = ux > Lines[i].MaxX ? ux : Lines[i].MaxX;
                lx = lx < Lines[i].MinX ? lx : Lines[i].MinX;
                uy = uy > Lines[i].MaxY ? uy : Lines[i].MaxY;
                ly = ly < Lines[i].MinY ? ly : Lines[i].MinY;
            }
            g.Clear(BackColor);//???

            Rectangle drawRectangle = new Rectangle(0, 0, w, h);

            if (ShowLegend)
            {
                int legendHeight = 5 + (int)g.MeasureString("AjtW", Font).Height;
                if (h - legendHeight > 10)
                {
                    drawRectangle = new Rectangle(0, 0, w, h - legendHeight);
                    Rectangle legendRectangle = new Rectangle(0, h - legendHeight + 2, w, legendHeight - 2);
                    drawLegend(g, legendRectangle, legend, colors);
                }
            }
            if (ShowAxis)
            {
                Font font = new Font("Arial", 9, FontStyle.Regular);
                LinearGradientBrush lgBrush = new LinearGradientBrush(drawRectangle, Color.Gray, Color.Gray, 1.2f, true);
                Pen darkPen  = new Pen(Color.Gray, 2);
                Pen lightPen = new Pen(Color.Gray, 1);
                Pen axisPen  = new Pen(Color.Black, 3);
                Pen buildPen = new Pen(lgBrush, 1);

                // 画纵线以及X轴坐标
                int leftX = 60;                                                   //最左边的纵线距离图像左边的距离
                g.DrawLine(axisPen, leftX, 50, leftX, drawRectangle.Height - 32); //Y轴
                g.DrawString("0", font, Brushes.Black, leftX, drawRectangle.Height - 24);
                for (int i = 1; i <= 640 / 16; i++)
                {
                    leftX += 16;
                    if (i % 4 == 0)
                    {
                        g.DrawLine(darkPen, leftX, 50, leftX, drawRectangle.Height - 32);
                        g.DrawString((i * 16).ToString(), font, Brushes.Black, leftX - 10, drawRectangle.Height - 24);
                    }
                    else
                    {
                        g.DrawLine(lightPen, leftX, 50, leftX, drawRectangle.Height - 32);
                    }
                }

                // 画横线及Y轴坐标
                int      topY = 50; //最上边的横线距离图像顶部的距离
                string[] y    = new string[] { "35000", "30000", "25000", "20000", "15000", "10000", "5000", "   0", "-5000" };
                for (int i = 0; i < 28; i++)
                {
                    g.DrawLine(buildPen, 60, topY, 720, topY);
                    if (i % 4 == 0)
                    {
                        g.DrawLine(darkPen, 60, topY, 720, topY);
                        g.DrawString(y[i / 4], font, Brushes.Black, 10, topY);
                    }
                    else
                    {
                        g.DrawLine(lightPen, 60, topY, 720, topY);
                    }
                    topY += (drawRectangle.Height - 50 - 30) / 32;
                }
                g.DrawLine(axisPen, 20, topY, 720, topY); //X轴
                //g.DrawString("0", font, Brushes.Black, 10, topY);
                topY += (drawRectangle.Height - 50 - 30) / 32;
                for (int i = 29; i < 33; i++)
                {
                    if (i % 4 == 0)
                    {
                        g.DrawString(y[i / 4], font, Brushes.Black, 10, topY);
                        g.DrawLine(darkPen, 60, topY, 720, topY);
                    }
                    else
                    {
                        g.DrawLine(lightPen, 60, topY, 720, topY);
                    }
                    topY += (drawRectangle.Height - 50 - 30) / 32;
                }
                //g.DrawLine(buildPen, 60, topY, 760, topY); //最底下的横线
                //g.DrawString(y[8].ToString(), font, Brushes.Black, 10, topY);
            }
            if (!foundFirst)
            {
                return;
            }
            for (int i = 0; i < Lines.Count; i++)
            {
                if (Lines[i] == null)
                {
                    continue;
                }
                if (Lines[i].Show == false)
                {
                    continue;
                }
                Lines[i].Draw(g, drawRectangle, lx, ux, ly, uy);
            }
        }
Example #53
0
        private void kola(int n, int [,] A)
        {
            System.Drawing.Graphics formGraphics = this.CreateGraphics();

            System.Drawing.Graphics formGraphics1 = this.CreateGraphics();
            formGraphics.Clear(System.Drawing.Color.White);
            System.Drawing.Pen myPen;
            System.Drawing.Pen myPen1;
            myPen  = new System.Drawing.Pen(System.Drawing.Color.Black);
            myPen1 = new System.Drawing.Pen(System.Drawing.Color.Red);
            int[] a = new int[2];
            a[0] = 20;
            a[1] = 100;
            int[] b = new int[2];
            b[0] = 70;
            b[1] = 50;
            int[] c = new int[2];
            c[0] = 70;
            c[1] = 150;
            int [] L = new int[2 * n];
            int    k = 0;

            System.Drawing.Font drawFont = new System.Drawing.Font(
                "Arial", 16);
            System.Drawing.SolidBrush drawBrush = new
                                                  System.Drawing.SolidBrush(System.Drawing.Color.Black);
            string txt;

            for (int i = 0; i < n; i += 0)
            {
                if (i == 0 || i == n - 1)
                {
                    formGraphics.DrawEllipse(myPen, a[0], a[1], 30, 30);
                    ++i;
                    txt = i.ToString();
                    formGraphics.DrawString(txt, drawFont, drawBrush, a[0], a[1]);
                    L[k]     = a[0];
                    L[k + 1] = a[1];
                    k       += 2;
                }
                else
                {
                    formGraphics.DrawEllipse(myPen, b[0], b[1], 30, 30);
                    ++i;
                    txt = i.ToString();
                    formGraphics.DrawString(txt, drawFont, drawBrush, b[0], b[1]);
                    L[k]     = b[0];
                    L[k + 1] = b[1];
                    k       += 2;
                    formGraphics.DrawEllipse(myPen, c[0], c[1], 30, 30);
                    ++i;
                    txt = i.ToString();
                    formGraphics.DrawString(txt, drawFont, drawBrush, c[0], c[1]);
                    L[k]     = c[0];
                    L[k + 1] = c[1];
                    k       += 2;
                    a[0]    += 100;
                    b[0]    += 100;
                    c[0]    += 100;
                }
            }
            drawFont.Dispose();
            drawBrush.Dispose();
            for (int i = 0; i < n; i += 2)
            {
                Parallel.Invoke(
                    () =>
                {
                    for (int j = 0; j < n; ++j)
                    {
                        if (i == j)
                        {
                            continue;
                        }
                        if (A[i, j] == 1)
                        {
                            formGraphics.DrawLine(myPen, L[2 * i] + 15, L[2 * i + 1] + 15, L[2 * j] + 15, L[2 * j + 1] + 15);
                        }
                    }
                },
                    () =>
                {
                    for (int j = 0; j < n; ++j)
                    {
                        if (i == j)
                        {
                            continue;
                        }
                        if (A[i, j] == 1)
                        {
                            formGraphics1.DrawLine(myPen1, L[2 * (i + 1)] + 15, L[2 * (i + 1) + 1] + 15, L[2 * j] + 15, L[2 * j + 1] + 15);
                        }
                    }
                }
                    );
            }


            myPen.Dispose();
            myPen1.Dispose();

            formGraphics.Dispose();
            formGraphics1.Dispose();
        }
Example #54
0
    /// <summary>
    /// 生成图片验证码
    /// </summary>
    /// <param name="checkCode"></param>
    public void CreateCheckCodeImage(string[] checkCode)
    {
        if (checkCode == null || checkCode.Length <= 0)
        {
            return;
        }

        System.Drawing.Bitmap   image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 32.5)), 30);
        System.Drawing.Graphics g     = Graphics.FromImage(image);

        try
        {
            Random random = new Random();
            //清空图片背景色
            g.Clear(Color.White);

            //画图片的背景噪音线
            for (int i = 0; i < 20; i++)
            {
                int x1 = random.Next(image.Width);
                int x2 = random.Next(image.Width);
                int y1 = random.Next(image.Height);
                int y2 = random.Next(image.Height);

                g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
            }

            //定义颜色
            Color[] c = { Color.Black, Color.Red, Color.DarkBlue, Color.Green, Color.Orange, Color.Brown, Color.DarkCyan, Color.Purple };
            //定义字体
            string[] f = { "Verdana", "Microsoft Sans Serif", "Comic Sans MS", "Arial", "宋体" };

            for (int k = 0; k <= checkCode.Length - 1; k++)
            {
                int cindex = random.Next(7);
                int findex = random.Next(5);

                Font       drawFont  = new Font(f[findex], 16, (System.Drawing.FontStyle.Bold));
                SolidBrush drawBrush = new SolidBrush(c[cindex]);

                float x      = 5.0F;
                float y      = 0.0F;
                float width  = 20.0F;
                float height = 25.0F;
                int   sjx    = random.Next(10);
                int   sjy    = random.Next(image.Height - (int)height);

                RectangleF drawRect = new RectangleF(x + sjx + (k * 25), y + sjy, width, height);

                StringFormat drawFormat = new StringFormat();
                drawFormat.Alignment = StringAlignment.Center;

                g.DrawString(checkCode[k], drawFont, drawBrush, drawRect, drawFormat);
            }

            //画图片的前景噪音点
            for (int i = 0; i < 100; i++)
            {
                int x = random.Next(image.Width);
                int y = random.Next(image.Height);

                image.SetPixel(x, y, Color.FromArgb(random.Next()));
            }

            //画图片的边框线
            g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1);

            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
            //System.Web.HttpContext.Current.Response.ClearContent();
            System.Web.HttpContext.Current.Response.ContentType = "image/Gif";
            System.Web.HttpContext.Current.Response.BinaryWrite(ms.ToArray());
        }
        finally
        {
            g.Dispose();
            image.Dispose();
        }
    }
Example #55
0
        /// <summary>
        /// Takes in an image, scales it maintaining the proper aspect ratio of the image such it fits in the PictureBox's canvas size and loads the image into picture box.
        /// Has an optional param to center the image in the picture box if it's smaller then canvas size.
        /// </summary>
        /// <param name="image">The Image you want to load, see LoadPicture</param>
        /// <param name="canvas">The canvas you want the picture to load into</param>
        /// <param name="centerImage"></param>
        /// <returns></returns>

        public static Image ResizeImage(Image image, PictureBox canvas, bool centerImage)
        {
            if (image == null || canvas == null)
            {
                return(null);
            }

            int canvasWidth    = canvas.Size.Width;
            int canvasHeight   = canvas.Size.Height;
            int originalWidth  = image.Size.Width;
            int originalHeight = image.Size.Height;

            System.Drawing.Image thumbnail =
                new Bitmap(canvasWidth, canvasHeight); // changed parm names
            System.Drawing.Graphics graphic =
                System.Drawing.Graphics.FromImage(thumbnail);

            graphic.InterpolationMode  = InterpolationMode.HighQualityBicubic;
            graphic.SmoothingMode      = SmoothingMode.HighQuality;
            graphic.PixelOffsetMode    = PixelOffsetMode.HighQuality;
            graphic.CompositingQuality = CompositingQuality.HighQuality;

            /* ------------------ new code --------------- */

            // Figure out the ratio
            double ratioX = (double)canvasWidth / (double)originalWidth;
            double ratioY = (double)canvasHeight / (double)originalHeight;
            double ratio  = ratioX < ratioY ? ratioX : ratioY; // use whichever multiplier is smaller

            // now we can get the new height and width
            int newHeight = Convert.ToInt32(originalHeight * ratio);
            int newWidth  = Convert.ToInt32(originalWidth * ratio);

            // Now calculate the X,Y position of the upper-left corner
            // (one of these will always be zero)
            int posX = Convert.ToInt32((canvasWidth - (image.Width * ratio)) / 2);
            int posY = Convert.ToInt32((canvasHeight - (image.Height * ratio)) / 2);

            if (!centerImage)
            {
                posX = 0;
                posY = 0;
            }
            graphic.Clear(Color.White); // white padding
            graphic.DrawImage(image, posX, posY, newWidth, newHeight);

            /* ------------- end new code ---------------- */

            System.Drawing.Imaging.ImageCodecInfo[] info =
                ImageCodecInfo.GetImageEncoders();
            EncoderParameters encoderParameters;

            encoderParameters          = new EncoderParameters(1);
            encoderParameters.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality,
                                                              100L);

            Stream s = new System.IO.MemoryStream();

            thumbnail.Save(s, info[1],
                           encoderParameters);

            return(Image.FromStream(s));
        }
Example #56
0
 public Form1()
 {
     InitializeComponent();
     g = pictureBox1.CreateGraphics();
     g.Clear(Color.White);
 }
Example #57
0
        /// <summary>
        /// 指定长宽裁剪
        /// 按模版比例最大范围的裁剪图片并缩放至模版尺寸
        /// </summary>
        /// <remarks>吴剑 2010-11-15</remarks>
        /// <param name="postedFile">原图HttpPostedFile对象</param>
        /// <param name="fileSaveUrl">保存路径</param>
        /// <param name="maxWidth">最大宽(单位:px)</param>
        /// <param name="maxHeight">最大高(单位:px)</param>
        /// <param name="quality">质量(范围0-100)</param>
        public static void CutForCustom(System.Drawing.Image initImage, string fileSaveUrl, int maxWidth, int maxHeight, int quality)
        {
            //从文件获取原始图片,并使用流中嵌入的颜色管理信息
            //System.Drawing.Image initImage = System.Drawing.Image.FromStream(postedFile.InputStream, true);

            //原图宽高均小于模版,不作处理,直接保存
            if (initImage.Width < maxWidth && initImage.Height < maxHeight)
            {
                Bitmap _newBitmap = new Bitmap(maxWidth, maxHeight);
                // _newBitmap.MakeTransparent(Color.White);
                // _newBitmap.(Color.Transparent);
                Graphics _graphics = Graphics.FromImage(_newBitmap);
                _graphics.Clear(Color.White);
                //_graphics.DrawImage(Image.FromFile(@"F:\backImage.bmp"), 0, 0, 240, 320);
                // Image sourceImg = initImage;
                _graphics.DrawImage(initImage, (maxWidth - initImage.Width) / 2, (maxHeight - initImage.Height) / 2);
                // _graphics.DrawString("菜鸟先飞",new Font( FontFamily.GenericMonospace,12), Brushes.Yellow, 0, 0);
                //_graphics.Clear(Color.White);
                //_graphics.Save();
                _newBitmap.Save(fileSaveUrl, ImageFormat.Jpeg);
                _graphics.Dispose();
                _newBitmap.Dispose();
            }
            else
            {
                //模版的宽高比例
                double templateRate = (double)maxWidth / maxHeight;
                //原图片的宽高比例
                double initRate = (double)initImage.Width / initImage.Height;

                //原图与模版比例相等,直接缩放
                if (templateRate == initRate)
                {
                    //按模版大小生成最终图片
                    System.Drawing.Image    templateImage = new System.Drawing.Bitmap(maxWidth, maxHeight);
                    System.Drawing.Graphics templateG     = System.Drawing.Graphics.FromImage(templateImage);
                    templateG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                    templateG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                    // templateG.Clear(Color.White);
                    templateG.DrawImage(initImage, new System.Drawing.Rectangle(0, 0, maxWidth, maxHeight), new System.Drawing.Rectangle(0, 0, initImage.Width, initImage.Height), System.Drawing.GraphicsUnit.Pixel);
                    templateImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Png);
                }
                //原图与模版比例不等,裁剪后缩放
                else
                {
                    //裁剪对象
                    System.Drawing.Image    pickedImage = null;
                    System.Drawing.Graphics pickedG     = null;

                    //定位
                    Rectangle fromR = new Rectangle(0, 0, 0, 0); //原图裁剪定位
                    Rectangle toR   = new Rectangle(0, 0, 0, 0); //目标定位

                    //宽为标准进行裁剪
                    if (templateRate > initRate)
                    {
                        //裁剪对象实例化
                        pickedImage = new System.Drawing.Bitmap(initImage.Width, (int)Math.Floor(initImage.Width / templateRate));
                        pickedG     = System.Drawing.Graphics.FromImage(pickedImage);

                        //裁剪源定位
                        fromR.X      = 0;
                        fromR.Y      = (int)Math.Floor((initImage.Height - initImage.Width / templateRate) / 2);
                        fromR.Width  = initImage.Width;
                        fromR.Height = (int)Math.Floor(initImage.Width / templateRate);

                        //裁剪目标定位
                        toR.X      = 0;
                        toR.Y      = 0;
                        toR.Width  = initImage.Width;
                        toR.Height = (int)Math.Floor(initImage.Width / templateRate);
                    }
                    //高为标准进行裁剪
                    else
                    {
                        pickedImage = new System.Drawing.Bitmap((int)Math.Floor(initImage.Height * templateRate), initImage.Height);
                        pickedG     = System.Drawing.Graphics.FromImage(pickedImage);

                        fromR.X      = (int)Math.Floor((initImage.Width - initImage.Height * templateRate) / 2);
                        fromR.Y      = 0;
                        fromR.Width  = (int)Math.Floor(initImage.Height * templateRate);
                        fromR.Height = initImage.Height;

                        toR.X      = 0;
                        toR.Y      = 0;
                        toR.Width  = (int)Math.Floor(initImage.Height * templateRate);
                        toR.Height = initImage.Height;
                    }

                    //设置质量
                    pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                    pickedG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

                    //裁剪
                    pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);

                    //按模版大小生成最终图片
                    System.Drawing.Image    templateImage = new System.Drawing.Bitmap(maxWidth, maxHeight);
                    System.Drawing.Graphics templateG     = System.Drawing.Graphics.FromImage(templateImage);
                    templateG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                    templateG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                    templateG.Clear(Color.White);
                    templateG.DrawImage(pickedImage, new System.Drawing.Rectangle(0, 0, maxWidth, maxHeight), new System.Drawing.Rectangle(0, 0, pickedImage.Width, pickedImage.Height), System.Drawing.GraphicsUnit.Pixel);

                    //关键质量控制
                    //获取系统编码类型数组,包含了jpeg,bmp,png,gif,tiff
                    ImageCodecInfo[] icis = ImageCodecInfo.GetImageEncoders();
                    ImageCodecInfo   ici  = null;
                    foreach (ImageCodecInfo i in icis)
                    {
                        if (i.MimeType == "image/jpeg" || i.MimeType == "image/bmp" || i.MimeType == "image/png" || i.MimeType == "image/gif")
                        {
                            ici = i;
                        }
                    }
                    // EncoderParameters ep = new EncoderParameters(1);
                    // ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)quality);

                    //保存缩略图
                    // templateImage.Save(fileSaveUrl, ici, ep);
                    SetPicThumbnail(templateImage, fileSaveUrl, quality);
                    //templateImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);

                    //释放资源
                    templateG.Dispose();
                    templateImage.Dispose();

                    pickedG.Dispose();
                    pickedImage.Dispose();
                }
            }

            //释放资源
            initImage.Dispose();
        }
Example #58
0
        /// asp.net上传图片并生成缩略图
        /// </summary>
        /// <param name="upImage">HtmlInputFile控件</param>
        /// <param name="sSavePath">保存的路径,些为相对服务器路径的下的文件夹</param>
        /// <param name="sThumbExtension">缩略图的thumb</param>
        /// <param name="intThumbWidth">生成缩略图的宽度</param>
        /// <param name="intThumbHeight">生成缩略图的高度</param>
        /// <returns>缩略图名称</returns>
        public string UpLoadImage(HttpPostedFile myFile, string sSavePath, int intThumbWidth, int intThumbHeight, string ofileName)
        {
            string sFilename = "";

            if (myFile != null && myFile.ContentLength > 0)
            {
                // HttpPostedFile myFile = upImage.PostedFile;
                int nFileLen = myFile.ContentLength;
                // if (nFileLen == 0)
                //    return "没有选择上传图片";
                //获取upImage选择文件的扩展名
                string extendName = System.IO.Path.GetExtension(myFile.FileName).ToLower();
                //判断是否为图片格式
                if (extendName != ".jpg" && extendName != ".jpge" && extendName != ".gif" && extendName != ".bmp" && extendName != ".png")
                {
                    return("false");
                }

                byte[] myData = new Byte[nFileLen];
                myFile.InputStream.Read(myData, 0, nFileLen);
                //保存文件名

                sFilename = ofileName + extendName;// System.IO.Path.GetFileName(myFile.FileName);
                string datetime = DateTime.Now.ToString("yyyy-MM");
                if (!System.IO.Directory.Exists(sSavePath + datetime + "/"))
                {
                    System.IO.Directory.CreateDirectory(sSavePath + datetime + "/");
                }
                int file_append = 0;
                //检查当前文件夹下是否有同名图片,有则在文件名+1

                while (System.IO.File.Exists(sSavePath + datetime + "/" + sFilename))
                {
                    File.Delete(StringPlus.MapPath(sSavePath + datetime + "/" + sFilename));
                    //file_append++;
                    //sFilename = System.IO.Path.GetFileNameWithoutExtension(sFilename)
                    //    + file_append.ToString() + extendName;
                }
                System.IO.FileStream newFile
                    = new System.IO.FileStream((sSavePath + datetime + "/" + sFilename),
                                               System.IO.FileMode.Create, System.IO.FileAccess.Write);
                newFile.Write(myData, 0, myData.Length);
                newFile.Close();
                //以上为上传原图
                try
                {
                    //原图加载
                    using (System.Drawing.Image sourceImage = System.Drawing.Image.FromFile(sSavePath + datetime + "/" + sFilename))
                    {
                        //原图宽度和高度
                        int width  = sourceImage.Width;
                        int height = sourceImage.Height;
                        int smallWidth;
                        int smallHeight;
                        //获取第一张绘制图的大小,(比较 原图的宽/缩略图的宽  和 原图的高/缩略图的高)
                        if (((decimal)width) / height <= ((decimal)intThumbWidth) / intThumbHeight)
                        {
                            smallWidth  = intThumbWidth;
                            smallHeight = intThumbWidth * height / width;
                        }
                        else
                        {
                            smallWidth  = intThumbHeight * width / height;
                            smallHeight = intThumbHeight;
                        }
                        //判断缩略图在当前文件夹下是否同名称文件存在
                        file_append = 0;

                        // sThumbFile =myFile.FileName ;
                        sFilename = "s_" + sFilename;
                        if (!System.IO.Directory.Exists(sSavePath + datetime + "/"))
                        {
                            System.IO.Directory.CreateDirectory(sSavePath + datetime + "/");
                        }
                        while (System.IO.File.Exists(sSavePath + datetime + "/" + sFilename))
                        {
                            file_append++;
                            sFilename = System.IO.Path.GetFileNameWithoutExtension(sFilename) +
                                        file_append.ToString() + extendName;
                        }
                        //缩略图保存的绝对路径
                        string smallImagePath = sSavePath + datetime + "/" + sFilename;
                        //新建一个图板,以最小等比例压缩大小绘制原图
                        using (System.Drawing.Image bitmap = new System.Drawing.Bitmap(smallWidth, smallHeight))
                        {
                            //绘制中间图
                            using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap))
                            {
                                //高清,平滑
                                g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                                g.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                                g.Clear(Color.Black);
                                g.DrawImage(
                                    sourceImage,
                                    new System.Drawing.Rectangle(0, 0, smallWidth, smallHeight),
                                    new System.Drawing.Rectangle(0, 0, width, height),
                                    System.Drawing.GraphicsUnit.Pixel
                                    );
                            }
                            //新建一个图板,以缩略图大小绘制中间图
                            using (System.Drawing.Image bitmap1 = new System.Drawing.Bitmap(intThumbWidth, intThumbHeight))
                            {
                                //绘制缩略图  http://www.cnblogs.com/sosoft/

                                using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap1))
                                {
                                    //高清,平滑
                                    g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                                    g.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                                    g.Clear(Color.Black);
                                    int lwidth  = (smallWidth - intThumbWidth) / 2;
                                    int bheight = (smallHeight - intThumbHeight) / 2;
                                    g.DrawImage(bitmap, new Rectangle(0, 0, intThumbWidth, intThumbHeight), lwidth, bheight, intThumbWidth, intThumbHeight, GraphicsUnit.Pixel);
                                    g.Dispose();
                                    bitmap1.Save(smallImagePath, System.Drawing.Imaging.ImageFormat.Jpeg);
                                }
                            }
                        }
                    }
                }
                catch
                {
                    //出错则删除
                    System.IO.File.Delete((sSavePath + sFilename));
                    return("false");
                }
                //返回缩略图名称
                return(sFilename);
            }
            return("false");
        }
Example #59
0
        /// <summary>
        /// 生成图片缩略文件
        /// </summary>
        /// <param name="originalImage">图片源文件</param>
        /// <param name="width">缩略图宽度</param>
        /// <param name="height">缩略图高度</param>
        /// <param name="mode">生成缩略图的方式</param>
        /// <returns>缩率处理后图片文件</returns>
        public static Image MakeThumbnail(Image originalImage, int width, int height, ThumbnailModel mode)
        {
            int towidth  = width;
            int toheight = height;

            int x  = 0;
            int y  = 0;
            int ow = originalImage.Width;
            int oh = originalImage.Height;

            switch (mode)
            {
            case ThumbnailModel.HighWidth:     //指定高宽缩放(可能变形)
                break;

            case ThumbnailModel.Width:     //指定宽,高按比例
                toheight = originalImage.Height * width / originalImage.Width;
                break;

            case ThumbnailModel.Hight:     //指定高,宽按比例
                towidth = originalImage.Width * height / originalImage.Height;
                break;

            case ThumbnailModel.Default:     //指定高,宽按比例
                if (ow <= towidth && oh <= toheight)
                {
                    x  = -(towidth - ow) / 2;
                    y  = -(toheight - oh) / 2;
                    ow = towidth;
                    oh = toheight;
                }
                else
                {
                    if (ow > oh)    //宽大于高
                    {
                        x  = 0;
                        y  = -(ow - oh) / 2;
                        oh = ow;
                    }
                    else    //高大于宽
                    {
                        y  = 0;
                        x  = -(oh - ow) / 2;
                        ow = oh;
                    }
                }
                break;

            case ThumbnailModel.Auto:
                if (originalImage.Width / originalImage.Height >= width / height)
                {
                    if (originalImage.Width > width)
                    {
                        towidth  = width;
                        toheight = (originalImage.Height * width) / originalImage.Width;
                    }
                    else
                    {
                        towidth  = originalImage.Width;
                        toheight = originalImage.Height;
                    }
                }
                else
                {
                    if (originalImage.Height > height)
                    {
                        toheight = height;
                        towidth  = (originalImage.Width * height) / originalImage.Height;
                    }
                    else
                    {
                        towidth  = originalImage.Width;
                        toheight = originalImage.Height;
                    }
                }
                break;

            case ThumbnailModel.Cut:     //指定高宽裁减(不变形)
                if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight)
                {
                    oh = originalImage.Height;
                    ow = originalImage.Height * towidth / toheight;
                    y  = 0;
                    x  = (originalImage.Width - ow) / 2;
                }
                else
                {
                    ow = originalImage.Width;
                    oh = originalImage.Width * height / towidth;
                    x  = 0;
                    y  = (originalImage.Height - oh) / 2;
                }
                break;

            default:

                break;
            }

            //新建一个bmp图片
            System.Drawing.Image bitmap = new System.Drawing.Bitmap(towidth, toheight);

            //新建一个画板
            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);

            //设置高质量插值法
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;

            //设置高质量,低速度呈现平滑程度
            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

            //清空画布并以透明背景色填充
            g.Clear(System.Drawing.Color.White);

            //在指定位置并且按指定大小绘制原图片的指定部分
            g.DrawImage(originalImage, new System.Drawing.Rectangle(0, 0, towidth, toheight),
                        new System.Drawing.Rectangle(x, y, ow, oh),
                        System.Drawing.GraphicsUnit.Pixel);

            return(bitmap);
        }
Example #60
0
        public void GetCroppedImage(string inPath, string outPath, int maxWidth, int maxHeight)
        {
            using (var imgOriginal = System.Drawing.Image.FromFile(inPath))
            {
                ImageFormat tFormat = imgOriginal.RawFormat;
                //get original width and height of the incoming image
                var originalWidth  = imgOriginal.Width;  // 1000
                var originalHeight = imgOriginal.Height; // 800

                //裁剪对象
                System.Drawing.Image    pickedImage = null;
                System.Drawing.Graphics pickedG     = null;

                //定位
                Rectangle fromR = new Rectangle(0, 0, 0, 0); //原图裁剪定位
                Rectangle toR   = new Rectangle(0, 0, 0, 0); //目标定位

                //模版的宽高比例
                double templateRate = (double)maxWidth / maxHeight;
                //原图片的宽高比例
                double initRate = (double)imgOriginal.Width / imgOriginal.Height;
                //宽为标准进行裁剪
                if (templateRate > initRate)
                {
                    //裁剪对象实例化
                    pickedImage = new System.Drawing.Bitmap(imgOriginal.Width, (int)System.Math.Floor(imgOriginal.Width / templateRate));
                    pickedG     = System.Drawing.Graphics.FromImage(pickedImage);

                    //裁剪源定位
                    fromR.X      = 0;
                    fromR.Y      = (int)System.Math.Floor((imgOriginal.Height - imgOriginal.Width / templateRate) / 2);
                    fromR.Width  = imgOriginal.Width;
                    fromR.Height = (int)System.Math.Floor(imgOriginal.Width / templateRate);

                    //裁剪目标定位
                    toR.X      = 0;
                    toR.Y      = 0;
                    toR.Width  = imgOriginal.Width;
                    toR.Height = (int)System.Math.Floor(imgOriginal.Width / templateRate);
                }
                //高为标准进行裁剪
                else
                {
                    pickedImage = new System.Drawing.Bitmap((int)System.Math.Floor(imgOriginal.Height * templateRate), imgOriginal.Height);
                    pickedG     = System.Drawing.Graphics.FromImage(pickedImage);

                    fromR.X      = (int)System.Math.Floor((imgOriginal.Width - imgOriginal.Height * templateRate) / 2);
                    fromR.Y      = 0;
                    fromR.Width  = (int)System.Math.Floor(imgOriginal.Height * templateRate);
                    fromR.Height = imgOriginal.Height;

                    toR.X      = 0;
                    toR.Y      = 0;
                    toR.Width  = (int)System.Math.Floor(imgOriginal.Height * templateRate);
                    toR.Height = imgOriginal.Height;
                }

                //设置质量
                pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                pickedG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

                //裁剪
                pickedG.DrawImage(imgOriginal, toR, fromR, System.Drawing.GraphicsUnit.Pixel);


                //按模版大小生成最终图片
                using (var resizedBmp = new System.Drawing.Bitmap(maxWidth, maxHeight))
                {
                    using (var graphics = Graphics.FromImage((Image)resizedBmp))
                    {
                        graphics.InterpolationMode = InterpolationMode.Default;
                        graphics.DrawImage(imgOriginal, 0, 0, maxWidth, maxHeight);
                    }


                    using (System.Drawing.Graphics templateG = System.Drawing.Graphics.FromImage(resizedBmp))
                    {
                        templateG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                        templateG.SmoothingMode     = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                        templateG.Clear(Color.White);
                        var rectangle = new Rectangle(0, 0, maxWidth, maxHeight);

                        //templateG.DrawImage(pickedImage, new System.Drawing.Rectangle(0, 0, maxWidth, maxHeight), new System.Drawing.Rectangle(0, 0, pickedImage.Width, pickedImage.Height), System.Drawing.GraphicsUnit.Pixel);


                        //crop
                        using (var croppedBmp = resizedBmp.Clone(rectangle, resizedBmp.PixelFormat))
                        {
                            //get the codec needed
                            var imgCodec = ImageCodecInfo.GetImageEncoders().First(c => c.FormatID == tFormat.Guid);

                            //make a paramater to adjust quality
                            var codecParams = new EncoderParameters(1);

                            //reduce to quality of 80 (from range of 0 (max compression) to 100 (no compression))
                            codecParams.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)this.Quality);

                            EncoderParameters ep = new EncoderParameters();
                            long[]            qy = new long[1];
                            qy[0] = this.Quality;//设置压缩的比例1-100
                            EncoderParameter eParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qy);
                            ep.Param[0] = eParam;

                            //save to the memorystream - convert it to an array and send it back as a byte[]
                            croppedBmp.Save(outPath, imgCodec, ep);
                        }
                    }
                }
            }
        }