예제 #1
0
// NewBackground creates an xgraphics.Image which spans the entire screen,
// initialized to black.
func NewBackground(X *xgbutil.XUtil) (*xgraphics.Image, error) {
	res, err := randr.GetScreenResources(X.Conn(), X.RootWin()).Reply()
	if err != nil {
		return nil, err
	}
	var bgRect image.Rectangle
	for _, output := range res.Outputs {
		r, err := util.OutputRect(X, output)
		// NOTE: It doesn't really matter if this returns a Zero Rectangle.
		if err != nil {
			return nil, err
		}
		bgRect = bgRect.Union(r)
	}
	return xgraphics.New(X, bgRect), nil
}
예제 #2
0
// SetImageToBg sets the given image into the background at the proper location
// for the named output to display.
func SetImageToBg(X *xgbutil.XUtil,
	bg *xgraphics.Image,
	img image.Image,
	name string) error {

	output, err := util.GetOutputByName(X, name)
	if err != nil {
		return err
	}
	geom, err := util.OutputRect(X, output)
	if err != nil {
		return err
	}
	if err = bg.CreatePixmap(); err != nil {
		return err
	}
	bg.XDraw()
	draw.Draw(bg, geom, img, img.Bounds().Min, draw.Src)
	return nil
}