1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
|
private void GradientFill(Control paintedObject, Color firstColor, Color secondColor, LinearGradientMode linearGradientMode, bool symmetric) {
int width = paintedObject.Width;
int height = paintedObject.Height;
Bitmap bmp = new Bitmap(width, height);
Graphics g = Graphics.FromImage(bmp);
if (symmetric) {
int widthHalf = width / 2;
int heightHalf = height / 2;
Rectangle firstBrushRectangle;
Rectangle firstFillRectangle;
Rectangle secondBrushRectangle;
Rectangle secondFillRectangle;
if (linearGradientMode == LinearGradientMode.Vertical) {
firstBrushRectangle = new Rectangle(0, 0, width, heightHalf);
firstFillRectangle = new Rectangle(0, 0, width, heightHalf);
secondBrushRectangle = new Rectangle(0, heightHalf, width, height - heightHalf);
secondFillRectangle = new Rectangle(0, heightHalf, width, height - heightHalf);
} else {
firstBrushRectangle = new Rectangle(0, 0, widthHalf, height);
firstFillRectangle = new Rectangle(0, 0, widthHalf, height);
secondBrushRectangle = new Rectangle(widthHalf, 0, width - widthHalf, height);
secondFillRectangle = new Rectangle(widthHalf, 0, width - widthHalf, height);
}
LinearGradientBrush firstGradientBrush = new LinearGradientBrush(firstBrushRectangle, firstColor, secondColor, linearGradientMode);
LinearGradientBrush secondGradientBrush = new LinearGradientBrush(secondBrushRectangle, secondColor, firstColor, linearGradientMode);
g.FillRectangle(firstGradientBrush, firstFillRectangle);
g.FillRectangle(secondGradientBrush, secondFillRectangle);
} else {
Rectangle baseRectangle = new Rectangle(0, 0, width, height);
LinearGradientBrush gradientBrush = new LinearGradientBrush(baseRectangle, firstColor, secondColor, linearGradientMode);
g.FillRectangle(gradientBrush, baseRectangle);
}
paintedObject.BackgroundImage = bmp;
}
private void panel1_Resize(object sender, EventArgs e) {
GradientFill((Control)sender, Color.BlueViolet, Color.LimeGreen, LinearGradientMode.Vertical, true);
textBox1.Text = panel1.Height.ToString();
}
|
