Reapply "Refactor setting an SkPaint onto a hwui Layer."

This reverts commit 90d0c75e94.

Change-Id: Ie807761231edf7c848b019931dccbf466208c0be

core/java/android/view/HardwareLayer.java

@@ -66,8 +66,7 @@ final class HardwareLayer {
      * @see View#setLayerPaint(android.graphics.Paint)
      */
     public void setLayerPaint(Paint paint) {
-        nSetLayerPaint(mFinalizer.mDeferredUpdater, paint.mNativePaint,
-                paint.getColorFilter() != null ? paint.getColorFilter().native_instance : 0);
+        nSetLayerPaint(mFinalizer.mDeferredUpdater, paint.mNativePaint);
     }
 
     /**
@@ -270,7 +269,7 @@ final class HardwareLayer {
     private static native void nDestroyLayerUpdater(long layerUpdater);
 
     private static native boolean nPrepare(long layerUpdater, int width, int height, boolean isOpaque);
-    private static native void nSetLayerPaint(long layerUpdater, long paint, long colorFilter);
+    private static native void nSetLayerPaint(long layerUpdater, long paint);
     private static native void nSetTransform(long layerUpdater, long matrix);
     private static native void nSetSurfaceTexture(long layerUpdater,
             SurfaceTexture surface, boolean isAlreadyAttached);

core/jni/android_view_HardwareLayer.cpp

@@ -88,13 +88,11 @@ static jboolean android_view_HardwareLayer_prepare(JNIEnv* env, jobject clazz,
 }
 
 static void android_view_HardwareLayer_setLayerPaint(JNIEnv* env, jobject clazz,
-        jlong layerUpdaterPtr, jlong paintPtr, jlong colorFilterPtr) {
+        jlong layerUpdaterPtr, jlong paintPtr) {
     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerUpdaterPtr);
     if (layer) {
         SkPaint* paint = reinterpret_cast<SkPaint*>(paintPtr);
-        SkColorFilter* colorFilter = reinterpret_cast<SkColorFilter*>(colorFilterPtr);
         layer->setPaint(paint);
-        layer->setColorFilter(colorFilter);
     }
 }
 
@@ -162,7 +160,7 @@ static JNINativeMethod gMethods[] = {
     { "nDestroyLayerUpdater",    "(J)V",       (void*) android_view_HardwareLayer_destroyLayerUpdater },
 
     { "nPrepare",                "(JIIZ)Z",    (void*) android_view_HardwareLayer_prepare },
-    { "nSetLayerPaint",          "(JJJ)V",     (void*) android_view_HardwareLayer_setLayerPaint },
+    { "nSetLayerPaint",          "(JJ)V",      (void*) android_view_HardwareLayer_setLayerPaint },
     { "nSetTransform",           "(JJ)V",      (void*) android_view_HardwareLayer_setTransform },
     { "nSetSurfaceTexture",      "(JLandroid/graphics/SurfaceTexture;Z)V",
             (void*) android_view_HardwareLayer_setSurfaceTexture },

libs/hwui/DeferredLayerUpdater.cpp

@@ -34,21 +34,23 @@ DeferredLayerUpdater::DeferredLayerUpdater(Layer* layer, OpenGLRenderer* rendere
     mWidth = mLayer->layer.getWidth();
     mHeight = mLayer->layer.getHeight();
     mBlend = mLayer->isBlend();
-    mColorFilter = mLayer->getColorFilter();
+    mColorFilter = SkSafeRef(mLayer->getColorFilter());
     mAlpha = mLayer->getAlpha();
     mMode = mLayer->getMode();
     mDirtyRect.setEmpty();
 }
 
 DeferredLayerUpdater::~DeferredLayerUpdater() {
-    setColorFilter(NULL);
+    SkSafeUnref(mColorFilter);
     if (mLayer) {
         mCaches.resourceCache.decrementRefcount(mLayer);
     }
     delete mRenderer;
 }
 
-void DeferredLayerUpdater::setColorFilter(SkColorFilter* colorFilter) {
+void DeferredLayerUpdater::setPaint(const SkPaint* paint) {
+    OpenGLRenderer::getAlphaAndModeDirect(paint, &mAlpha, &mMode);
+    SkColorFilter* colorFilter = (paint) ? paint->getColorFilter() : NULL;
     SkRefCnt_SafeAssign(mColorFilter, colorFilter);
 }
 

libs/hwui/DeferredLayerUpdater.h

@@ -75,11 +75,7 @@ public:
     ANDROID_API void setDisplayList(DisplayList* displayList,
                 int left, int top, int right, int bottom);
 
-    ANDROID_API void setPaint(const SkPaint* paint) {
-        OpenGLRenderer::getAlphaAndModeDirect(paint, &mAlpha, &mMode);
-    }
-
-    ANDROID_API void setColorFilter(SkColorFilter* colorFilter);
+    ANDROID_API void setPaint(const SkPaint* paint);
 
     ANDROID_API bool apply();
 

libs/hwui/Layer.cpp

@@ -131,8 +131,9 @@ void Layer::removeFbo(bool flush) {
     }
 }
 
-void Layer::setPaint(SkPaint* paint) {
+void Layer::setPaint(const SkPaint* paint) {
     OpenGLRenderer::getAlphaAndModeDirect(paint, &alpha, &mode);
+    setColorFilter((paint) ? paint->getColorFilter() : NULL);
 }
 
 void Layer::setColorFilter(SkColorFilter* filter) {

libs/hwui/Layer.h

@@ -117,7 +117,7 @@ public:
         texture.height = height;
     }
 
-    ANDROID_API void setPaint(SkPaint* paint);
+    ANDROID_API void setPaint(const SkPaint* paint);
 
     inline void setBlend(bool blend) {
         texture.blend = blend;

libs/hwui/OpenGLRenderer.cpp

@@ -868,14 +868,11 @@ bool OpenGLRenderer::createLayer(float left, float top, float right, float botto
 
     const bool fboLayer = flags & SkCanvas::kClipToLayer_SaveFlag;
 
-    SkXfermode::Mode mode = getXfermodeDirect(paint);
-    int alpha = getAlphaDirect(paint);
-
     // Window coordinates of the layer
     Rect clip;
     Rect bounds(left, top, right, bottom);
     calculateLayerBoundsAndClip(bounds, clip, fboLayer);
-    updateSnapshotIgnoreForLayer(bounds, clip, fboLayer, alpha);
+    updateSnapshotIgnoreForLayer(bounds, clip, fboLayer, getAlphaDirect(paint));
 
     // Bail out if we won't draw in this snapshot
     if (currentSnapshot()->isIgnored()) {
@@ -888,12 +885,11 @@ bool OpenGLRenderer::createLayer(float left, float top, float right, float botto
         return false;
     }
 
-    layer->setAlpha(alpha, mode);
+    layer->setPaint(paint);
     layer->layer.set(bounds);
     layer->texCoords.set(0.0f, bounds.getHeight() / float(layer->getHeight()),
             bounds.getWidth() / float(layer->getWidth()), 0.0f);
 
-    layer->setColorFilter(getColorFilter(paint));
     layer->setBlend(true);
     layer->setDirty(false);
 
@@ -1011,7 +1007,6 @@ void OpenGLRenderer::composeLayer(const Snapshot& removed, const Snapshot& resto
     }
 
     if (!fboLayer && layer->getAlpha() < 255) {
-        // TODO: this seems to point to the fact that the layer should store the paint
         SkPaint layerPaint;
         layerPaint.setAlpha(layer->getAlpha());
         layerPaint.setXfermodeMode(SkXfermode::kDstIn_Mode);