From 5ff9df658230d49e42c43586997a02d8e4dd417e Mon Sep 17 00:00:00 2001
From: Romain Guy <romainguy@google.com>
Date: Mon, 23 Jan 2012 17:09:05 -0800
Subject: Add full support for Canvas.setDrawFilter()

Change-Id: I0ad35d0603c4eeda469014803be14c1dcdde918c
---
 libs/hwui/OpenGLRenderer.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'libs/hwui/OpenGLRenderer.cpp')

diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 786a4f1c0f98..cc0e05ef914b 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -111,6 +111,7 @@ OpenGLRenderer::OpenGLRenderer(): mCaches(Caches::getInstance()) {
     mShader = NULL;
     mColorFilter = NULL;
     mHasShadow = false;
+    mHasDrawFilter = false;
 
     memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices));
 
@@ -2398,6 +2399,31 @@ void OpenGLRenderer::setupShadow(float radius, float dx, float dy, int color) {
     mShadowColor = color;
 }
 
+///////////////////////////////////////////////////////////////////////////////
+// Draw filters
+///////////////////////////////////////////////////////////////////////////////
+
+void OpenGLRenderer::resetPaintFilter() {
+    mHasDrawFilter = false;
+}
+
+void OpenGLRenderer::setupPaintFilter(int clearBits, int setBits) {
+    mHasDrawFilter = true;
+    mPaintFilterClearBits = clearBits & SkPaint::kAllFlags;
+    mPaintFilterSetBits = setBits & SkPaint::kAllFlags;
+}
+
+SkPaint* OpenGLRenderer::filterPaint(SkPaint* paint) {
+    if (!mHasDrawFilter || !paint) return paint;
+
+    uint32_t flags = paint->getFlags();
+
+    mFilteredPaint = *paint;
+    mFilteredPaint.setFlags((flags & ~mPaintFilterClearBits) | mPaintFilterSetBits);
+
+    return &mFilteredPaint;
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // Drawing implementation
 ///////////////////////////////////////////////////////////////////////////////
-- 
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