func (c *Compositor) Compose() {
for {
<-c.InvMsgPipe
<-c.MouseWait
// render desktop, windows, and child elements
for v := c.WindowList.Back(); v != nil; v = v.Prev() {
e := v.Value.(*base.Element)
gfx.DrawSrc(c.fb, e, e.X, e.Y, e.Width, e.Height)
}
// render mouse pointer
if c.mousePointer != nil {
gfx.DrawOver(c.fb, c.mousePointer, c.mousePointer.X, c.mousePointer.Y, c.mousePointer.Width, c.mousePointer.Height)
}
flush(c)
c.CompositorRelease <- false
}
}
func (ms *Mouse) CreatePointer(fb *fbdev.Framebuffer, imp chan int64) *MousePointer {
f, err := os.Open("data/cursor/arrow.png")
if err != nil {
log.Critical(err)
return nil
}
defer f.Close()
img, _, err := image.Decode(bufio.NewReader(f))
if err != nil {
log.Critical(err)
return nil
}
mp := &MousePointer{
fb: fb,
}
w := img.Bounds().Max.X
h := img.Bounds().Max.Y
mp.Element = base.Element{
X: int(fb.Vinfo.Xres / 2),
Y: int(fb.Vinfo.Yres / 2),
Width: w,
Height: h,
Buffer: make([]byte, w*h*4),
InvMsgPipe: imp,
}
ms.RegisterMousePointer(mp.mouse)
gfx.DrawSrc(&mp.Element, img, 0, 0, w, h)
return mp
}