Esempio n. 1
0
        private void ShowImage(IMAGE image)
        {
            // Create a new temporary bitmap to resize the original image
            // The size of this bitmap is the size of the picImage picturebox.

            Bitmap tempBitmap = new Bitmap(pbImage.Width, pbImage.Height, PixelFormat.Format24bppRgb);

            // Set the resolution of the bitmap to match the original resolution.
            tempBitmap.SetResolution(image.imgSource.HorizontalResolution, image.imgSource.VerticalResolution);
            // Create a Graphics object to further edit the temporary bitmap
            Graphics bmapGraphics = Graphics.FromImage(tempBitmap);

            bmapGraphics.Clear(Color.White);
            // Set the interpolationmode插值模式 since we are resizing an image here
            bmapGraphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
            // Draw the original image on the temporary bitmap, resizing it using
            // the calculated values of targetWidth and targetHeight.
            bmapGraphics.DrawImage(image.imgSource
                                   , new Rectangle(image.targetLeft, image.targetTop, image.targetWidth, image.targetHeight)
                                   , new Rectangle(0, 0, image.imgSource.Width, image.imgSource.Height)
                                   , GraphicsUnit.Pixel);

            bmapGraphics.Dispose();

            if (toRotate == true)
            {
                tempBitmap = RotateImage(tempBitmap, angle);
            }

            pbImage.Image = tempBitmap;
        }
Esempio n. 2
0
        private void pbImage_MouseWheel(object sender, MouseEventArgs e)
        {
            IMAGE imgToZoom = img[picnow];

            double ratio;

            if (e.Delta > 0)
            {
                ratio = e.Delta / 60;
            }
            else
            {
                double k = e.Delta;
                k     = -k;
                ratio = 80 / k;
            }
            imgToZoom.targetHeight = (int)(imgToZoom.targetHeight * ratio);
            imgToZoom.targetWidth  = (int)(imgToZoom.targetWidth * ratio);

            imgToZoom.targetTop  = (pbImage.Height - imgToZoom.targetHeight) / 2;
            imgToZoom.targetLeft = (pbImage.Width - imgToZoom.targetWidth) / 2;

            img[picnow] = imgToZoom;

            ShowImage(imgToZoom);
        }
Esempio n. 3
0
        private void btOpenImage_Click(object sender, EventArgs e)
        {
            hasimage = true;
            OpenFileDialog openFileDia = new OpenFileDialog();

            if (openFileDia.ShowDialog() == DialogResult.OK)
            {
                cnt    = 0;
                max    = 0;
                picnow = 0;
                string   path_Directory = openFileDia.FileName.Substring(0, openFileDia.FileName.LastIndexOf("\\"));
                string[] files          = System.IO.Directory.GetFiles(path_Directory);
                foreach (string filename in files)
                {
                    try
                    {
                        string name     = filename.Substring(filename.LastIndexOf("\\"), filename.Length - filename.LastIndexOf("\\"));
                        string filetype = filename.Substring(filename.LastIndexOf("."), filename.Length - filename.LastIndexOf("."));
                        if (filetype == ".jpg")
                        {
                            img[cnt] = new IMAGE(Image.FromFile(path_Directory + name), 0, 0, 0, 0);
                            cnt++;
                            if (filename == openFileDia.FileName)
                            {
                                picnow = cnt - 1;
                            }
                        }
                    }
                    catch { }
                }
                max = cnt;
                cnt = picnow;
                btSaveImg.Enabled = true;
                btLastImg.Enabled = true;
                btNextImg.Enabled = true;
                this.ResizeAndDisplayImage(img[picnow]);
            }
        }
Esempio n. 4
0
        private void ResizeAndDisplayImage(IMAGE OriginalImage)
        {
            this.pbImage.BackColor = Color.White;

            if (OriginalImage == null)
            {
                return;
            }

            int    sourceWidth  = OriginalImage.imgSource.Width;
            int    sourceHeight = OriginalImage.imgSource.Height;
            double ratio;

            //Calculate targetWidth and targetHeight, so that the image will fit into the pictureBox
            if ((sourceWidth != pbImage.Width) || (sourceHeight != pbImage.Height))
            {
                if (sourceHeight > OriginalImage.targetHeight)
                {
                    if (sourceHeight > pbImage.Height || sourceWidth > pbImage.Width)
                    {
                        OriginalImage.targetHeight = pbImage.Height;
                        ratio = (double)OriginalImage.targetHeight / sourceHeight;
                        OriginalImage.targetWidth = (int)(sourceWidth * ratio);
                        if (pbImage.Width < OriginalImage.targetWidth)
                        {
                            OriginalImage.targetWidth = pbImage.Width;
                            ratio = (double)OriginalImage.targetWidth / sourceWidth;
                            OriginalImage.targetHeight = (int)(sourceHeight * ratio);
                        }
                        else if (pbImage.Height < OriginalImage.targetHeight)
                        {
                            OriginalImage.targetHeight = pbImage.Height;
                            ratio = (double)OriginalImage.targetHeight / sourceHeight;
                            OriginalImage.targetWidth = (int)(sourceWidth * ratio);
                        }
                    }
                    else
                    {
                        OriginalImage.targetHeight = sourceHeight;
                        OriginalImage.targetWidth  = sourceWidth;
                    }
                }


                OriginalImage.targetTop  = (pbImage.Height - OriginalImage.targetHeight) / 2;
                OriginalImage.targetLeft = (pbImage.Width - OriginalImage.targetWidth) / 2;

                OriginalImage.targetTop  = OriginalImage.targetTop > 0 ? OriginalImage.targetTop : 0;
                OriginalImage.targetLeft = OriginalImage.targetLeft > 0 ? OriginalImage.targetLeft : 0;
            }

            else
            {
                // Calculate the targetTop and targetLeft values, to center the image
                OriginalImage.targetTop  = (pbImage.Height - sourceHeight) / 2;
                OriginalImage.targetLeft = (pbImage.Width - sourceWidth) / 2;
            }

            ShowImage(OriginalImage);

            this.updateImgInfo(OriginalImage.imgSource);
        }