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");
}
private void DrawColorBar(Graphics g, int x, int y, int width, int height,
ColorMap map, string str)
{
int[,] cmap = new int[64, 4];
switch(str)
{
case "Jet":
cmap = map.Jet();
break;
case "Hot":
cmap = map.Hot();
break;
case "Gray":
cmap = map.Gray();
break;
case "Cool":
cmap = map.Cool();
break;
case "Summer":
cmap = map.Summer();
break;
case "Autumn":
cmap = map.Autumn();
break;
case "Spring":
cmap = map.Spring();
break;
case "Winter":
cmap = map.Winter();
break;
}
int ymin = 0;
int ymax = 32;
int dy = height / (ymax - ymin);
int m = 64;
for (int i = 0; i < 32; i++)
{
int colorIndex = (int)((i - ymin) * m / (ymax - ymin));
SolidBrush aBrush = new SolidBrush(Color.FromArgb(
cmap[colorIndex, 0], cmap[colorIndex, 1],
cmap[colorIndex, 2], cmap[colorIndex, 3]));
g.FillRectangle(aBrush, x, y + i * dy, width, dy);
}
}
public override void DrawRect(System.Drawing.RectangleF dirtyRect)
{
Graphics g = Graphics.FromCurrentContext();
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");
}