diff options
Diffstat (limited to 'layers')
| -rw-r--r-- | layers/layers.go | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/layers/layers.go b/layers/layers.go deleted file mode 100644 index d054e8b..0000000 --- a/layers/layers.go +++ /dev/null @@ -1,85 +0,0 @@ -package layers - -import ( - "container/list" - "errors" - "image" - "image/draw" - - "github.com/faiface/gui/event" -) - -type ImageFlusher interface { - Image() *image.RGBA - Flush(r image.Rectangle) -} - -type Layers struct { - event.Dispatch - dst ImageFlusher - layers list.List -} - -func (l *Layers) Dst(dst ImageFlusher) { - l.dst = dst - for e := l.layers.Back(); e != nil; e = e.Prev() { - layer := e.Value.(*Layer) - rgba := image.NewRGBA(dst.Image().Bounds()) - draw.Draw(rgba, layer.rgba.Bounds(), layer.rgba, layer.rgba.Bounds().Min, draw.Src) - layer.rgba = rgba - } -} - -func (l *Layers) Push() *Layer { - layer := &Layer{ - l: l, - rgba: image.NewRGBA(l.dst.Image().Bounds()), - } - layer.e = l.layers.PushFront(layer) - return layer -} - -func (l *Layers) Flush(r image.Rectangle) { - if l.dst == nil { - panic(errors.New("layers: Flush: no destination")) - } - draw.Draw(l.dst.Image(), r, image.Transparent, r.Min, draw.Src) - for e := l.layers.Back(); e != nil; e = e.Prev() { - layer := e.Value.(*Layer) - draw.Draw(l.dst.Image(), r, layer.rgba, r.Min, draw.Over) - } - l.dst.Flush(r) -} - -func (l *Layers) Happen(event string) bool { - for e := l.layers.Front(); e != nil; e = e.Next() { - layer := e.Value.(*Layer) - if layer.Happen(event) { - return true - } - } - return false -} - -type Layer struct { - event.Dispatch - l *Layers - e *list.Element - rgba *image.RGBA -} - -func (l *Layer) Remove() { - l.l.layers.Remove(l.e) -} - -func (l *Layer) Front() { - l.l.layers.MoveToFront(l.e) -} - -func (l *Layer) Image() *image.RGBA { - return l.rgba -} - -func (l *Layer) Flush(r image.Rectangle) { - l.l.Flush(r) -} |