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89 lines
3.3 KiB
C#
89 lines
3.3 KiB
C#
7 months ago
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using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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using System.Windows.Forms;
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namespace Mesnac.Docking
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{
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internal static class DrawHelper
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{
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public static Point RtlTransform(Control control, Point point)
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{
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if (control.RightToLeft != RightToLeft.Yes)
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return point;
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else
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return new Point(control.Right - point.X, point.Y);
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}
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public static Rectangle RtlTransform(Control control, Rectangle rectangle)
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{
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if (control.RightToLeft != RightToLeft.Yes)
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return rectangle;
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else
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return new Rectangle(control.ClientRectangle.Right - rectangle.Right, rectangle.Y, rectangle.Width, rectangle.Height);
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}
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public static GraphicsPath GetRoundedCornerTab(GraphicsPath graphicsPath, Rectangle rect, bool upCorner)
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{
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if (graphicsPath == null)
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graphicsPath = new GraphicsPath();
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else
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graphicsPath.Reset();
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int curveSize = 6;
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if (upCorner)
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{
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graphicsPath.AddLine(rect.Left, rect.Bottom, rect.Left, rect.Top + curveSize / 2);
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graphicsPath.AddArc(new Rectangle(rect.Left, rect.Top, curveSize, curveSize), 180, 90);
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graphicsPath.AddLine(rect.Left + curveSize / 2, rect.Top, rect.Right - curveSize / 2, rect.Top);
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graphicsPath.AddArc(new Rectangle(rect.Right - curveSize, rect.Top, curveSize, curveSize), -90, 90);
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graphicsPath.AddLine(rect.Right, rect.Top + curveSize / 2, rect.Right, rect.Bottom);
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}
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else
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{
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graphicsPath.AddLine(rect.Right, rect.Top, rect.Right, rect.Bottom - curveSize / 2);
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graphicsPath.AddArc(new Rectangle(rect.Right - curveSize, rect.Bottom - curveSize, curveSize, curveSize), 0, 90);
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graphicsPath.AddLine(rect.Right - curveSize / 2, rect.Bottom, rect.Left + curveSize / 2, rect.Bottom);
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graphicsPath.AddArc(new Rectangle(rect.Left, rect.Bottom - curveSize, curveSize, curveSize), 90, 90);
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graphicsPath.AddLine(rect.Left, rect.Bottom - curveSize / 2, rect.Left, rect.Top);
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}
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return graphicsPath;
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}
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public static GraphicsPath CalculateGraphicsPathFromBitmap(Bitmap bitmap)
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{
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return CalculateGraphicsPathFromBitmap(bitmap, Color.Empty);
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}
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// From http://edu.cnzz.cn/show_3281.html
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public static GraphicsPath CalculateGraphicsPathFromBitmap(Bitmap bitmap, Color colorTransparent)
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{
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GraphicsPath graphicsPath = new GraphicsPath();
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if (colorTransparent == Color.Empty)
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colorTransparent = bitmap.GetPixel(0, 0);
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for(int row = 0; row < bitmap.Height; row ++)
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{
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int colOpaquePixel = 0;
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for(int col = 0; col < bitmap.Width; col ++)
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{
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if(bitmap.GetPixel(col, row) != colorTransparent)
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{
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colOpaquePixel = col;
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int colNext = col;
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for(colNext = colOpaquePixel; colNext < bitmap.Width; colNext ++)
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if(bitmap.GetPixel(colNext, row) == colorTransparent)
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break;
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graphicsPath.AddRectangle(new Rectangle(colOpaquePixel, row, colNext - colOpaquePixel, 1));
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col = colNext;
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}
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}
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}
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return graphicsPath;
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}
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}
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}
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