Enable changing properties of layer paint
Previously, to draw a layered view with a changed Paint object for the
drawLayer operation, you'd have to invalidate the parent view, to get the
native DisplayList to pick up the new Paint properties. This change adds
API and functionality so that the developer can call setLayerPaint(), which
does the proper invalidation (lightweight, doesn't cause redrawing the view).
Issue #6923810 Make it easy to efficiently animate a layer's Paint
Change-Id: I7fea79788d50f6d9c86dd5e5b2a4490cb95142bb
diff --git a/libs/hwui/Layer.h b/libs/hwui/Layer.h
index f243177..76da671 100644
--- a/libs/hwui/Layer.h
+++ b/libs/hwui/Layer.h
@@ -45,6 +45,7 @@
* A layer has dimensions and is backed by an OpenGL texture or FBO.
*/
struct Layer {
+
Layer(const uint32_t layerWidth, const uint32_t layerHeight) {
mesh = NULL;
meshIndices = NULL;
@@ -60,10 +61,7 @@
displayList = NULL;
}
- ~Layer() {
- if (mesh) delete mesh;
- if (meshIndices) delete meshIndices;
- }
+ ~Layer();
/**
* Sets this layer's region to a rectangle. Computes the appropriate
@@ -106,6 +104,8 @@
texture.height = height;
}
+ ANDROID_API void setPaint(SkPaint* paint);
+
inline void setBlend(bool blend) {
texture.blend = blend;
}
@@ -191,9 +191,7 @@
return colorFilter;
}
- inline void setColorFilter(SkiaColorFilter* filter) {
- colorFilter = filter;
- }
+ ANDROID_API void setColorFilter(SkiaColorFilter* filter);
inline void bindTexture() {
glBindTexture(renderTarget, texture.id);