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78 lines
2.2 KiB
C#
78 lines
2.2 KiB
C#
using System;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Windows.Forms;
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using System.Diagnostics;
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namespace GreenShot
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{
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public delegate void ColorPickerEventHandler(object o, ColorPickerEventArgs e);
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public class ColorPickerToolStripButton : System.Windows.Forms.ToolStripButton
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{
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private Color color;
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public Point Offset = new Point(0,0);
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public event ColorPickerEventHandler ColorPicked;
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private ColorDialog cd;
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public ColorPickerToolStripButton()
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{
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cd = ColorDialog.GetInstance();
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this.Click += new System.EventHandler(this.ToolStripButton1Click);
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}
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public Color Color {
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set {color = value;this.Invalidate();}
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get {return color;}
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}
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protected override void OnPaint (PaintEventArgs e) {
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base.OnPaint(e);
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if(color != null) {
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// replace transparent color with selected color
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Graphics g = e.Graphics;
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//Graphics g = Graphics.FromImage(Image);
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ColorMap[] colorMap = new ColorMap[1];
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colorMap[0] = new ColorMap();
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colorMap[0].OldColor = Color.Magenta;//this.ImageTransparentColor;
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colorMap[0].NewColor = color;
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ImageAttributes attr = new ImageAttributes();
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attr.SetRemapTable(colorMap);
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Rectangle rect = new Rectangle(0, 0, Image.Width, Image.Height);
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// todo find a way to retrieve transparency offset automatically
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// for now, we use the public variable Offset to define this manually
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rect.Offset(Offset.X,Offset.Y);
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//Image.
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Debug.WriteLine("paint!"+this.Text+": "+color);
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//ssif(color.Equals(Color.Transparent)) ((Bitmap)Image).MakeTransparent(Color.Magenta);
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g.DrawImage(Image, rect, 0, 0, rect.Width, rect.Height, GraphicsUnit.Pixel, attr);
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//this.Image.In
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}
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}
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void ToolStripButton1Click(object sender, System.EventArgs e)
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{
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cd.ShowDialog(this.Owner);
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Color = cd.Color;
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if(ColorPicked != null) {
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ColorPicked(this, new ColorPickerEventArgs(Color, cd.RecentColors));
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}
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}
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}
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public class ColorPickerEventArgs : System.EventArgs {
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public Color Color;
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public Color[] RecentColors;
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public ColorPickerEventArgs(Color color, Color[] recentColors) {
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Color = color;
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RecentColors = recentColors;
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}
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}
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}
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