Golang cairo_paint_with_alpha示例

示例#1

文件： cairo.go 项目： raichu/gotk3

// PaintWithAlpha is a wrapper around cairo_paint_with_alpha().
func (v *Context) PaintWithAlpha(alpha float64) {
	C.cairo_paint_with_alpha(v.native(), C.double(alpha))
}

示例#2

文件： surface.go 项目： ungerik/go-cairo

func (self *Surface) PaintWithAlpha(alpha float64) {
	C.cairo_paint_with_alpha(self.context, C.double(alpha))
}

示例#3

文件： cairo.go 项目： jimmyfrasche/cairo

//PaintAlpha paints the current source everywhere within the current clip
//region, using a mask of constant alpha value alpha.
//
//The effect is similar to Paint, but the drawing is faded out using
//the alpha value.
//
//originally cairo_paint.
func (c *Context) PaintAlpha(alpha float64) *Context {
	C.cairo_paint_with_alpha(c.c, C.double(alpha))
	return c
}