COLOR_DODGE


Description:

COLOR_DODGE

Example: Colour dodge:

public static int main (string[] args) {
// Create a context:
Cairo.ImageSurface surface = new Cairo.ImageSurface (Cairo.Format.ARGB32, 80, 80);
Cairo.Context context = new Cairo.Context (surface);

// Draw a rectangle:
context.rectangle (10, 10, 50, 50);
context.set_source_rgba (0, 0, 0, 0.8);
context.set_line_width (8);
context.fill ();

// Change some style settings inside save/restore:
context.set_operator (Cairo.Operator.COLOR_DODGE);
context.set_source_rgba (1, 0, 0, 0.8);
context.rectangle (20, 20, 50, 50);
context.fill ();

// Save the image:
surface.write_to_png ("img.png");

return 0;
}

valac --pkg cairo operator-color-dodge.vala