/// <summary>
/// Creates and paints the button bitmap of the virtual scrollbar.
/// </summary>
/// <param name="width">The width of the button.</param>
/// <param name="height">The height of the button.</param>
/// <returns>The button image.</returns>
protected virtual Image CreateScrollButtonBitmap(int width, int height)
{
Bitmap bm = new Bitmap(width, height);
using (Graphics g = Graphics.FromImage(bm))
{
int r = Math.Min(width, height / 2) - 1;
if (r < 1)
{
r = 1;
}
backgroundBrush.Color = Color.Fuchsia;
//g.Clear(Color.Fuchsia);
g.FillRectangle(backgroundBrush, 0, 0, width, height);
using (GraphicsPlus gp = new GraphicsPlus(g))
{
Rectangle bounds = new Rectangle(0, 0, width - 1, height - 1);
gp.SmoothingMode = SmoothingMode.None;
Color color = scrollbarButtonColor;
using (SolidBrushPlus brush = new SolidBrushPlus(color, true))
{
gp.FillRoundRectangle(bounds, r, brush);
}
using (PenPlus pen = new PenPlus(ScrollBarButtonBorderColor, 1, true))
{
gp.DrawRoundRectangle(bounds, r, pen);
}
}
}
return(bm);
}
private void TestGdiPlus(GraphicsPlus graphics)
{
graphics.DrawImage(bmp, 0, 0, ClientRectangle.Width, ClientRectangle.Height);
PenPlus pen;
graphics.SetSmoothingMode(SmoothingMode.SmoothingModeAntiAlias);
pen = new PenPlus(Color.Black, 15);
pen.SetEndCap(LineCap.LineCapRound);
pen.SetStartCap(LineCap.LineCapRound);
pen.SetWidth(3);
pen.SetColor(Color.FromArgb(0x7f7f7f7f));
pen.SetWidth(40);
graphics.DrawLine(pen, 20, 20, ClientRectangle.Right - 20, ClientRectangle.Bottom - 20);
graphics.DrawLine(pen, ClientRectangle.Right - 20, 20, 20, ClientRectangle.Bottom - 20);
SmoothingMode mode = graphics.GetSmoothingMode();
graphics.SetSmoothingMode(SmoothingMode.SmoothingModeAntiAlias);
foreach (GraphicsPath p in allPaths)
{
graphics.DrawPath(penWrite, p);
}
graphics.SetSmoothingMode(mode);
pen.Dispose();
}
private void CreateObjects()
{
brSolid = new SolidBrushPlus(Color.CornflowerBlue);
penSolid = new PenPlus(Color.Red, 10);
penSolid.SetEndCap(LineCap.LineCapRound);
penSolid.SetStartCap(LineCap.LineCapArrowAnchor);
brHatch = new HatchBrush(HatchStyle.HatchStyle25Percent,
Color.Black, Color.White);
penHatch = new PenPlus(brHatch, 10);
penSolidTrans = new PenPlus(Color.FromArgb(-0x5f7f7f7f), 10);
penSolidCustomCap = new PenPlus(Color.Black, 20);
GraphicsPath path = new GraphicsPath(FillMode.FillModeAlternate);
path.AddEllipse(-0.5f, -1.5f, 1, 3);
CustomLineCap cap = new CustomLineCap(null, path, LineCap.LineCapFlat, 0);
penSolidCustomCap.SetCustomEndCap(cap);
penDash = new PenPlus(Color.Black, 5);
penDash.SetDashStyle(DashStyle.DashStyleDot);
brGrad = new LinearGradientBrush(
new GpPointF(0, 0), new GpPointF(100, 100),
Color.Black, Color.White);
penGradient = new PenPlus(brGrad, 30);
}
private void drawDirectionLinePlus(GraphicsPlus graphics)
{
graphics.SetSmoothingMode(SmoothingMode.SmoothingModeAntiAlias);
PenPlus pen = new PenPlus(TARGET_LINE_COLOR, 3);
pen.SetEndCap(LineCap.LineCapRound);
pen.SetStartCap(LineCap.LineCapRound);
graphics.DrawLine(pen, this.Width / 2, this.Height / 2, targetPoint.X, targetPoint.Y);
pen.Dispose();
}
private void MainForm_Load(object sender, EventArgs e)
{
GpStatusPlus stat = NativeMethods.GdiplusStartup(out token, input, out output);
string bitmapPath = System.IO.Path.GetDirectoryName(GetType().Assembly.GetModules()[0].FullyQualifiedName);
bitmapPath = System.IO.Path.Combine(bitmapPath, "test.jpg");
StreamOnFile sf = new StreamOnFile(bitmapPath);
bmp = new BitmapPlus(sf);
penWrite = new PenPlus(Color.Blue, 3);
path = new GraphicsPath(FillMode.FillModeAlternate);
}
protected virtual void PaintButtonBackground(FluidPaintEventArgs e)
{
const int const_radius = 8;
if (this.shape != ButtonShape.Flat || IsDown)
{
Rectangle rect = ButtonRectangle;
rect.Width--;
rect.Height--;
if (rect.Width < 1 || rect.Height < 1)
{
return;
}
rect.Offset(e.ControlBounds.X, e.ControlBounds.Y);
Graphics g = e.Graphics;
int radius = e.ScaleX(const_radius);
if (radius > rect.Width / 2)
{
radius = rect.Width / 2;
}
Color endColor = this.BackColor;
if (!Enabled)
{
endColor = ColorConverter.AlphaBlendColor(Color.Black, endColor, 128);
}
int alpha = Enabled ? 127 : 32;
Color startColor = ColorConverter.AlphaBlendColor(endColor, Color.White, alpha); //Color.FromArgb(0x7fffffff);
Color borderColor = ColorConverter.AlphaBlendColor(endColor, Color.White, 100);
GraphicShape shape = ButtonShapeToGraphic(this.shape);
using (GraphicsPlus gp = new GraphicsPlus(g))
{
GraphicsPlus.GradientMode mode = IsDown ? GraphicsPlus.GradientMode.Bottom : GraphicsPlus.GradientMode.Top;
gp.GradientFillShape(rect, radius, startColor, endColor, mode, shape, corners);
using (PenPlus pen = new PenPlus(borderColor, (float)1))
{
gp.DrawShape(rect, radius, pen, shape, corners);
}
}
}
PerformPaintButtonContent(e);
}
private void drawRotatedArrow(GraphicsPlus graphics)
{
Debug.WriteLine("drawRotatedArrow: " + this.rotationAngle, this.ToString());
Point center = new Point(this.Width / 2, this.Height / 2);
int arWidthHalf = ARROW_WIDTH / 2;
//int arHeightHalf = ARROW_HEIGHT / 2;
Point[] arrowPoints =
{
new Point(center.X, center.Y - arWidthHalf),
new Point(center.X - 2 * arWidthHalf / 3, center.Y + arWidthHalf),
new Point(center.X + 2 * arWidthHalf / 3, center.Y + arWidthHalf),
new Point(center.X, center.Y + arWidthHalf / 2)
};
Debug.WriteLine("drawRotatedArrow: points "
+ PointUtil.pointsStr(arrowPoints), this.ToString());
PointMath.RotatePoints(arrowPoints, center, this.rotationAngle);
Debug.WriteLine("drawRotatedArrow: points "
+ PointUtil.pointsStr(arrowPoints), this.ToString());
graphics.SetSmoothingMode(SmoothingMode.SmoothingModeAntiAlias);
PenPlus pen = new PenPlus(ARROW_COLOR, 3);
pen.SetEndCap(LineCap.LineCapRound);
pen.SetStartCap(LineCap.LineCapRound);
graphics.DrawLine(pen, new GpPoint(arrowPoints[0].X, arrowPoints[0].Y),
new GpPoint(arrowPoints[1].X, arrowPoints[1].Y));
graphics.DrawLine(pen, new GpPoint(arrowPoints[1].X, arrowPoints[1].Y),
new GpPoint(arrowPoints[3].X, arrowPoints[3].Y));
graphics.DrawLine(pen, new GpPoint(arrowPoints[3].X, arrowPoints[3].Y),
new GpPoint(arrowPoints[2].X, arrowPoints[2].Y));
graphics.DrawLine(pen, new GpPoint(arrowPoints[2].X, arrowPoints[2].Y),
new GpPoint(arrowPoints[0].X, arrowPoints[0].Y));
pen.Dispose();
}