Add ninePatch support to Canvas.h

Change-Id: Ic095291fe55911c6501c1bdefa4b8da973c77319
diff --git a/core/java/android/view/DisplayListCanvas.java b/core/java/android/view/DisplayListCanvas.java
index 05fa45f..948cec7 100644
--- a/core/java/android/view/DisplayListCanvas.java
+++ b/core/java/android/view/DisplayListCanvas.java
@@ -221,29 +221,6 @@
     // Drawing
     ///////////////////////////////////////////////////////////////////////////
 
-    // TODO: move to Canvas.java
-    @Override
-    public void drawPatch(NinePatch patch, Rect dst, Paint paint) {
-        Bitmap bitmap = patch.getBitmap();
-        throwIfCannotDraw(bitmap);
-        final long nativePaint = paint == null ? 0 : paint.getNativeInstance();
-        nDrawPatch(mNativeCanvasWrapper, bitmap, patch.mNativeChunk,
-                dst.left, dst.top, dst.right, dst.bottom, nativePaint);
-    }
-
-    // TODO: move to Canvas.java
-    @Override
-    public void drawPatch(NinePatch patch, RectF dst, Paint paint) {
-        Bitmap bitmap = patch.getBitmap();
-        throwIfCannotDraw(bitmap);
-        final long nativePaint = paint == null ? 0 : paint.getNativeInstance();
-        nDrawPatch(mNativeCanvasWrapper, bitmap, patch.mNativeChunk,
-                dst.left, dst.top, dst.right, dst.bottom, nativePaint);
-    }
-
-    private static native void nDrawPatch(long renderer, Bitmap bitmap, long chunk,
-            float left, float top, float right, float bottom, long paint);
-
     public void drawCircle(CanvasProperty<Float> cx, CanvasProperty<Float> cy,
             CanvasProperty<Float> radius, CanvasProperty<Paint> paint) {
         nDrawCircle(mNativeCanvasWrapper, cx.getNativeContainer(), cy.getNativeContainer(),
diff --git a/core/jni/Android.mk b/core/jni/Android.mk
index b7eda4a..75da27e 100644
--- a/core/jni/Android.mk
+++ b/core/jni/Android.mk
@@ -114,7 +114,6 @@
     android/graphics/MinikinUtils.cpp \
     android/graphics/Movie.cpp \
     android/graphics/NinePatch.cpp \
-    android/graphics/NinePatchImpl.cpp \
     android/graphics/NinePatchPeeker.cpp \
     android/graphics/Paint.cpp \
     android/graphics/PaintImpl.cpp \
diff --git a/core/jni/android/graphics/NinePatch.cpp b/core/jni/android/graphics/NinePatch.cpp
index e69f64e..1c28262 100644
--- a/core/jni/android/graphics/NinePatch.cpp
+++ b/core/jni/android/graphics/NinePatch.cpp
@@ -29,12 +29,11 @@
 #include "SkRegion.h"
 #include "GraphicsJNI.h"
 
+#include "utils/NinePatch.h"
+
 #include "JNIHelp.h"
 #include "core_jni_helpers.h"
 
-extern void NinePatch_Draw(SkCanvas* canvas, const SkRect& bounds, const SkBitmap& bitmap,
-        const android::Res_png_9patch& chunk, const SkPaint* paint, SkRegion** outRegion);
-
 using namespace android;
 
 /**
@@ -88,72 +87,6 @@
         }
     }
 
-    static void draw(JNIEnv* env, SkCanvas* canvas, SkRect& bounds, const SkBitmap& bitmap,
-            Res_png_9patch* chunk, const SkPaint* paint, jint destDensity, jint srcDensity) {
-        if (destDensity == srcDensity || destDensity == 0 || srcDensity == 0) {
-            ALOGV("Drawing unscaled 9-patch: (%g,%g)-(%g,%g)",
-                    SkScalarToFloat(bounds.fLeft), SkScalarToFloat(bounds.fTop),
-                    SkScalarToFloat(bounds.fRight), SkScalarToFloat(bounds.fBottom));
-            NinePatch_Draw(canvas, bounds, bitmap, *chunk, paint, NULL);
-        } else {
-            canvas->save();
-
-            SkScalar scale = destDensity / (float)srcDensity;
-            canvas->translate(bounds.fLeft, bounds.fTop);
-            canvas->scale(scale, scale);
-
-            bounds.fRight = (bounds.fRight-bounds.fLeft) / scale;
-            bounds.fBottom = (bounds.fBottom-bounds.fTop) / scale;
-            bounds.fLeft = bounds.fTop = 0;
-
-            ALOGV("Drawing scaled 9-patch: (%g,%g)-(%g,%g) srcDensity=%d destDensity=%d",
-                    SkScalarToFloat(bounds.fLeft), SkScalarToFloat(bounds.fTop),
-                    SkScalarToFloat(bounds.fRight), SkScalarToFloat(bounds.fBottom),
-                    srcDensity, destDensity);
-
-            NinePatch_Draw(canvas, bounds, bitmap, *chunk, paint, NULL);
-
-            canvas->restore();
-        }
-    }
-
-    static void drawF(JNIEnv* env, jobject, jlong canvasHandle, jobject boundsRectF,
-            jobject jbitmap, jlong chunkHandle, jlong paintHandle,
-            jint destDensity, jint srcDensity) {
-        SkCanvas* canvas       = reinterpret_cast<Canvas*>(canvasHandle)->asSkCanvas();
-        Res_png_9patch* chunk  = reinterpret_cast<Res_png_9patch*>(chunkHandle);
-        const Paint* paint     = reinterpret_cast<Paint*>(paintHandle);
-        SkASSERT(canvas);
-        SkASSERT(boundsRectF);
-        SkASSERT(chunk);
-        // paint is optional
-
-        SkBitmap bitmap;
-        GraphicsJNI::getSkBitmap(env, jbitmap, &bitmap);
-        SkRect bounds;
-        GraphicsJNI::jrectf_to_rect(env, boundsRectF, &bounds);
-
-        draw(env, canvas, bounds, bitmap, chunk, paint, destDensity, srcDensity);
-    }
-
-    static void drawI(JNIEnv* env, jobject, jlong canvasHandle, jobject boundsRect,
-            jobject jbitmap, jlong chunkHandle, jlong paintHandle,
-            jint destDensity, jint srcDensity) {
-        SkCanvas* canvas       = reinterpret_cast<Canvas*>(canvasHandle)->asSkCanvas();
-        Res_png_9patch* chunk  = reinterpret_cast<Res_png_9patch*>(chunkHandle);
-        const Paint* paint     = reinterpret_cast<Paint*>(paintHandle);
-        SkASSERT(canvas);
-        SkASSERT(boundsRect);
-        SkASSERT(chunk);
-        // paint is optional
-
-        SkBitmap bitmap;
-        GraphicsJNI::getSkBitmap(env, jbitmap, &bitmap);
-        SkRect bounds;
-        GraphicsJNI::jrect_to_rect(env, boundsRect, &bounds);
-        draw(env, canvas, bounds, bitmap, chunk, paint, destDensity, srcDensity);
-    }
-
     static jlong getTransparentRegion(JNIEnv* env, jobject, jobject jbitmap,
             jlong chunkHandle, jobject boundsRect) {
         Res_png_9patch* chunk = reinterpret_cast<Res_png_9patch*>(chunkHandle);
@@ -166,7 +99,7 @@
         GraphicsJNI::jrect_to_rect(env, boundsRect, &bounds);
 
         SkRegion* region = NULL;
-        NinePatch_Draw(NULL, bounds, bitmap, *chunk, NULL, &region);
+        NinePatch::Draw(NULL, bounds, bitmap, *chunk, NULL, &region);
 
         return reinterpret_cast<jlong>(region);
     }
@@ -180,10 +113,6 @@
     { "validateNinePatchChunk", "([B)J",
             (void*) SkNinePatchGlue::validateNinePatchChunk },
     { "nativeFinalize", "(J)V", (void*) SkNinePatchGlue::finalize },
-    { "nativeDraw", "(JLandroid/graphics/RectF;Landroid/graphics/Bitmap;JJII)V",
-            (void*) SkNinePatchGlue::drawF },
-    { "nativeDraw", "(JLandroid/graphics/Rect;Landroid/graphics/Bitmap;JJII)V",
-            (void*) SkNinePatchGlue::drawI },
     { "nativeGetTransparentRegion", "(Landroid/graphics/Bitmap;JLandroid/graphics/Rect;)J",
             (void*) SkNinePatchGlue::getTransparentRegion }
 };
diff --git a/core/jni/android_graphics_Canvas.cpp b/core/jni/android_graphics_Canvas.cpp
index 43825ad..5ddf235 100644
--- a/core/jni/android_graphics_Canvas.cpp
+++ b/core/jni/android_graphics_Canvas.cpp
@@ -18,7 +18,10 @@
 #include "GraphicsJNI.h"
 #include "core_jni_helpers.h"
 
+#include <androidfw/ResourceTypes.h>
 #include <Canvas.h>
+
+#include "Bitmap.h"
 #include "SkDrawFilter.h"
 #include "SkGraphics.h"
 #include "Paint.h"
@@ -330,6 +333,39 @@
                                            indices, indexCount, *paint);
 }
 
+static void drawNinePatch(JNIEnv* env, jobject, jlong canvasHandle, jlong bitmapHandle,
+        jlong chunkHandle, jfloat left, jfloat top, jfloat right, jfloat bottom,
+        jlong paintHandle, jint dstDensity, jint srcDensity) {
+
+    Canvas* canvas = get_canvas(canvasHandle);
+    Bitmap* bitmap = reinterpret_cast<Bitmap*>(bitmapHandle);
+    SkBitmap skiaBitmap;
+    bitmap->getSkBitmap(&skiaBitmap);
+    const android::Res_png_9patch* chunk = reinterpret_cast<android::Res_png_9patch*>(chunkHandle);
+    const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
+
+    if (CC_LIKELY(dstDensity == srcDensity || dstDensity == 0 || srcDensity == 0)) {
+        canvas->drawNinePatch(skiaBitmap, *chunk, left, top, right, bottom, paint);
+    } else {
+        canvas->save(SkCanvas::kMatrixClip_SaveFlag);
+
+        SkScalar scale = dstDensity / (float)srcDensity;
+        canvas->translate(left, top);
+        canvas->scale(scale, scale);
+
+        Paint filteredPaint;
+        if (paint) {
+            filteredPaint = *paint;
+        }
+        filteredPaint.setFilterQuality(kLow_SkFilterQuality);
+
+        canvas->drawNinePatch(skiaBitmap, *chunk, 0, 0, (right-left)/scale, (bottom-top)/scale,
+                &filteredPaint);
+
+        canvas->restore();
+    }
+}
+
 static void drawBitmap(JNIEnv* env, jobject jcanvas, jlong canvasHandle, jobject jbitmap,
                        jfloat left, jfloat top, jlong paintHandle, jint canvasDensity,
                        jint screenDensity, jint bitmapDensity) {
@@ -751,6 +787,7 @@
     {"native_drawArc","(JFFFFFFZJ)V", (void*) CanvasJNI::drawArc},
     {"native_drawPath","(JJJ)V", (void*) CanvasJNI::drawPath},
     {"nativeDrawVertices", "(JII[FI[FI[II[SIIJ)V", (void*)CanvasJNI::drawVertices},
+    {"native_drawNinePatch", "(JJJFFFFJII)V", (void*)CanvasJNI::drawNinePatch},
     {"native_drawBitmap","(JLandroid/graphics/Bitmap;FFJIII)V", (void*) CanvasJNI::drawBitmap},
     {"nativeDrawBitmapMatrix", "(JLandroid/graphics/Bitmap;JJ)V", (void*)CanvasJNI::drawBitmapMatrix},
     {"native_drawBitmap","(JLandroid/graphics/Bitmap;FFFFFFFFJII)V", (void*) CanvasJNI::drawBitmapRect},
diff --git a/core/jni/android_view_DisplayListCanvas.cpp b/core/jni/android_view_DisplayListCanvas.cpp
index 2953db4..3833325 100644
--- a/core/jni/android_view_DisplayListCanvas.cpp
+++ b/core/jni/android_view_DisplayListCanvas.cpp
@@ -22,8 +22,6 @@
 
 #include <android_runtime/AndroidRuntime.h>
 
-#include <androidfw/ResourceTypes.h>
-
 #include <cutils/properties.h>
 
 #include <SkBitmap.h>
@@ -83,17 +81,6 @@
 // Drawing
 // ----------------------------------------------------------------------------
 
-static void android_view_DisplayListCanvas_drawPatch(JNIEnv* env, jobject clazz,
-        jlong rendererPtr, jobject jbitmap, jlong patchPtr,
-        float left, float top, float right, float bottom, jlong paintPtr) {
-    SkBitmap bitmap;
-    GraphicsJNI::getSkBitmap(env, jbitmap, &bitmap);
-    DisplayListCanvas* renderer = reinterpret_cast<DisplayListCanvas*>(rendererPtr);
-    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(patchPtr);
-    Paint* paint = reinterpret_cast<Paint*>(paintPtr);
-    renderer->drawPatch(bitmap, patch, left, top, right, bottom, paint);
-}
-
 static void android_view_DisplayListCanvas_drawRoundRectProps(JNIEnv* env, jobject clazz,
         jlong rendererPtr, jlong leftPropPtr, jlong topPropPtr, jlong rightPropPtr,
         jlong bottomPropPtr, jlong rxPropPtr, jlong ryPropPtr, jlong paintPropPtr) {
@@ -196,8 +183,6 @@
 
     { "nCallDrawGLFunction", "(JJ)V",          (void*) android_view_DisplayListCanvas_callDrawGLFunction },
 
-    { "nDrawPatch",         "(JLandroid/graphics/Bitmap;JFFFFJ)V",     (void*) android_view_DisplayListCanvas_drawPatch },
-
     { "nDrawRoundRect",     "(JJJJJJJJ)V",     (void*) android_view_DisplayListCanvas_drawRoundRectProps },
     { "nDrawCircle",        "(JJJJJ)V",        (void*) android_view_DisplayListCanvas_drawCircleProps },
 
diff --git a/graphics/java/android/graphics/Bitmap.java b/graphics/java/android/graphics/Bitmap.java
index 1add3b85..b5b1a25 100644
--- a/graphics/java/android/graphics/Bitmap.java
+++ b/graphics/java/android/graphics/Bitmap.java
@@ -131,6 +131,13 @@
     }
 
     /**
+     * Return the pointer to the native object.
+     */
+    long getNativeInstance() {
+        return mNativePtr;
+    }
+
+    /**
      * Native bitmap has been reconfigured, so set premult and cached
      * width/height values
      */
diff --git a/graphics/java/android/graphics/Canvas.java b/graphics/java/android/graphics/Canvas.java
index 7bcc7f9..95ae72e 100644
--- a/graphics/java/android/graphics/Canvas.java
+++ b/graphics/java/android/graphics/Canvas.java
@@ -1281,7 +1281,12 @@
      * @hide
      */
     public void drawPatch(@NonNull NinePatch patch, @NonNull Rect dst, @Nullable Paint paint) {
-        patch.drawSoftware(this, dst, paint);
+        Bitmap bitmap = patch.getBitmap();
+        throwIfCannotDraw(bitmap);
+        final long nativePaint = paint == null ? 0 : paint.getNativeInstance();
+        native_drawNinePatch(mNativeCanvasWrapper, bitmap.getNativeInstance(), patch.mNativeChunk,
+                dst.left, dst.top, dst.right, dst.bottom, nativePaint,
+                mDensity, patch.getDensity());
     }
 
     /**
@@ -1294,7 +1299,12 @@
      * @hide
      */
     public void drawPatch(@NonNull NinePatch patch, @NonNull RectF dst, @Nullable Paint paint) {
-        patch.drawSoftware(this, dst, paint);
+        Bitmap bitmap = patch.getBitmap();
+        throwIfCannotDraw(bitmap);
+        final long nativePaint = paint == null ? 0 : paint.getNativeInstance();
+        native_drawNinePatch(mNativeCanvasWrapper, bitmap.getNativeInstance(), patch.mNativeChunk,
+                dst.left, dst.top, dst.right, dst.bottom, nativePaint,
+                mDensity, patch.getDensity());
     }
 
     /**
@@ -2062,6 +2072,9 @@
                                                long nativePaint);
     private static native void native_drawRegion(long nativeCanvas,
             long nativeRegion, long nativePaint);
+    private native void native_drawNinePatch(long nativeCanvas, long nativeBitmap,
+            long ninePatch, float dstLeft, float dstTop, float dstRight, float dstBottom,
+            long nativePaintOrZero, int screenDensity, int bitmapDensity);
     private native void native_drawBitmap(long nativeCanvas, Bitmap bitmap,
                                                  float left, float top,
                                                  long nativePaintOrZero,
diff --git a/graphics/java/android/graphics/NinePatch.java b/graphics/java/android/graphics/NinePatch.java
index 21a212a..b9a1eda 100644
--- a/graphics/java/android/graphics/NinePatch.java
+++ b/graphics/java/android/graphics/NinePatch.java
@@ -198,16 +198,6 @@
         canvas.drawPatch(this, location, paint);
     }
 
-    void drawSoftware(Canvas canvas, RectF location, Paint paint) {
-        nativeDraw(canvas.getNativeCanvasWrapper(), location, mBitmap, mNativeChunk,
-                paint != null ? paint.getNativeInstance() : 0, canvas.mDensity, mBitmap.mDensity);
-    }
-
-    void drawSoftware(Canvas canvas, Rect location, Paint paint) {
-        nativeDraw(canvas.getNativeCanvasWrapper(), location, mBitmap, mNativeChunk,
-                paint != null ? paint.getNativeInstance() : 0, canvas.mDensity, mBitmap.mDensity);
-    }
-
     /**
      * Return the underlying bitmap's density, as per
      * {@link Bitmap#getDensity() Bitmap.getDensity()}.
@@ -273,9 +263,5 @@
      */
     private static native long validateNinePatchChunk(byte[] chunk);
     private static native void nativeFinalize(long chunk);
-    private static native void nativeDraw(long canvas_instance, RectF loc, Bitmap bitmap_instance,
-            long c, long paint_instance_or_null, int destDensity, int srcDensity);
-    private static native void nativeDraw(long canvas_instance, Rect loc, Bitmap bitmap_instance,
-            long c, long paint_instance_or_null, int destDensity, int srcDensity);
     private static native long nativeGetTransparentRegion(Bitmap bitmap, long chunk, Rect location);
 }
diff --git a/libs/hwui/Android.common.mk b/libs/hwui/Android.common.mk
new file mode 100644
index 0000000..5c48709
--- /dev/null
+++ b/libs/hwui/Android.common.mk
@@ -0,0 +1,118 @@
+# getConfig in external/skia/include/core/SkBitmap.h is deprecated.
+# Allow Gnu extension: in-class initializer of static 'const float' member.
+# DeferredLayerUpdater.h: private field 'mRenderThread' is not used.
+
+LOCAL_SRC_FILES := \
+    font/CacheTexture.cpp \
+    font/Font.cpp \
+    renderstate/Blend.cpp \
+    renderstate/MeshState.cpp \
+    renderstate/PixelBufferState.cpp \
+    renderstate/RenderState.cpp \
+    renderstate/Scissor.cpp \
+    renderstate/Stencil.cpp \
+    renderstate/TextureState.cpp \
+    renderthread/CanvasContext.cpp \
+    renderthread/DrawFrameTask.cpp \
+    renderthread/EglManager.cpp \
+    renderthread/RenderProxy.cpp \
+    renderthread/RenderTask.cpp \
+    renderthread/RenderThread.cpp \
+    renderthread/TimeLord.cpp \
+    thread/TaskManager.cpp \
+    utils/Blur.cpp \
+    utils/GLUtils.cpp \
+    utils/LinearAllocator.cpp \
+    utils/NinePatchImpl.cpp \
+    AmbientShadow.cpp \
+    AnimationContext.cpp \
+    Animator.cpp \
+    AnimatorManager.cpp \
+    AssetAtlas.cpp \
+    Caches.cpp \
+    CanvasState.cpp \
+    ClipArea.cpp \
+    DamageAccumulator.cpp \
+    DeferredDisplayList.cpp \
+    DeferredLayerUpdater.cpp \
+    DisplayList.cpp \
+    DisplayListCanvas.cpp \
+    Dither.cpp \
+    Extensions.cpp \
+    FboCache.cpp \
+    FontRenderer.cpp \
+    FrameInfo.cpp \
+    FrameInfoVisualizer.cpp \
+    GammaFontRenderer.cpp \
+    GlopBuilder.cpp \
+    GradientCache.cpp \
+    Image.cpp \
+    Interpolator.cpp \
+    JankTracker.cpp \
+    Layer.cpp \
+    LayerCache.cpp \
+    LayerRenderer.cpp \
+    Matrix.cpp \
+    OpenGLRenderer.cpp \
+    Patch.cpp \
+    PatchCache.cpp \
+    PathCache.cpp \
+    PathTessellator.cpp \
+    PixelBuffer.cpp \
+    Program.cpp \
+    ProgramCache.cpp \
+    Properties.cpp \
+    RenderBufferCache.cpp \
+    RenderNode.cpp \
+    RenderProperties.cpp \
+    ResourceCache.cpp \
+    ShadowTessellator.cpp \
+    SkiaCanvas.cpp \
+    SkiaCanvasProxy.cpp \
+    SkiaShader.cpp \
+    Snapshot.cpp \
+    SpotShadow.cpp \
+    TessellationCache.cpp \
+    TextDropShadowCache.cpp \
+    Texture.cpp \
+    TextureCache.cpp
+
+intermediates := $(call intermediates-dir-for,STATIC_LIBRARIES,libRS,TARGET,)
+
+LOCAL_C_INCLUDES += \
+    external/skia/src/core
+
+LOCAL_CFLAGS += -DEGL_EGLEXT_PROTOTYPES -DGL_GLEXT_PROTOTYPES
+LOCAL_SHARED_LIBRARIES := liblog libcutils libutils libEGL libGLESv2 libskia libui libgui
+
+ifneq (false,$(ANDROID_ENABLE_RENDERSCRIPT))
+    LOCAL_CFLAGS += -DANDROID_ENABLE_RENDERSCRIPT
+    LOCAL_SHARED_LIBRARIES += libRS libRScpp
+    LOCAL_C_INCLUDES += \
+        $(intermediates) \
+        frameworks/rs/cpp \
+        frameworks/rs \
+
+endif
+
+ifndef HWUI_COMPILE_SYMBOLS
+    LOCAL_CFLAGS += -fvisibility=hidden
+endif
+
+ifdef HWUI_COMPILE_FOR_PERF
+    # TODO: Non-arm?
+    LOCAL_CFLAGS += -fno-omit-frame-pointer -marm -mapcs
+endif
+
+ifeq (true, $(HWUI_NULL_GPU))
+    LOCAL_SRC_FILES += \
+        tests/nullegl.cpp \
+        tests/nullgles.cpp
+
+    LOCAL_CFLAGS += -DHWUI_NULL_GPU
+endif
+
+# Defaults for ATRACE_TAG and LOG_TAG for libhwui
+LOCAL_CFLAGS += -DATRACE_TAG=ATRACE_TAG_VIEW -DLOG_TAG=\"OpenGLRenderer\"
+LOCAL_CFLAGS += -Wall -Wno-unused-parameter -Wunreachable-code
+LOCAL_CFLAGS += -ffast-math -O3 -Werror
diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index e5bc664..b3b3479 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -23,6 +23,7 @@
     utils/Blur.cpp \
     utils/GLUtils.cpp \
     utils/LinearAllocator.cpp \
+    utils/NinePatchImpl.cpp \
     AmbientShadow.cpp \
     AnimationContext.cpp \
     Animator.cpp \
diff --git a/libs/hwui/Canvas.h b/libs/hwui/Canvas.h
index a0b87f9..3c77b3d 100644
--- a/libs/hwui/Canvas.h
+++ b/libs/hwui/Canvas.h
@@ -19,6 +19,8 @@
 
 #include <cutils/compiler.h>
 
+#include "utils/NinePatch.h"
+
 #include <SkBitmap.h>
 #include <SkCanvas.h>
 #include <SkMatrix.h>
@@ -144,6 +146,9 @@
             float dstRight, float dstBottom, const SkPaint* paint) = 0;
     virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,
             const float* vertices, const int* colors, const SkPaint* paint) = 0;
+    virtual void drawNinePatch(const SkBitmap& bitmap, const android::Res_png_9patch& chunk,
+            float dstLeft, float dstTop, float dstRight, float dstBottom,
+            const SkPaint* paint) = 0;
 
     // Text
     /**
diff --git a/libs/hwui/DisplayListCanvas.cpp b/libs/hwui/DisplayListCanvas.cpp
index c48b070..a8dd71e 100644
--- a/libs/hwui/DisplayListCanvas.cpp
+++ b/libs/hwui/DisplayListCanvas.cpp
@@ -320,13 +320,14 @@
            vertices, colors, paint));
 }
 
-void DisplayListCanvas::drawPatch(const SkBitmap& bitmap, const Res_png_9patch* patch,
-        float left, float top, float right, float bottom, const SkPaint* paint) {
+void DisplayListCanvas::drawNinePatch(const SkBitmap& bitmap, const Res_png_9patch& patch,
+        float dstLeft, float dstTop, float dstRight, float dstBottom, const SkPaint* paint) {
     const SkBitmap* bitmapPtr = refBitmap(bitmap);
-    patch = refPatch(patch);
+    const Res_png_9patch* patchPtr = refPatch(&patch);
     paint = refPaint(paint);
 
-    addDrawOp(new (alloc()) DrawPatchOp(bitmapPtr, patch, left, top, right, bottom, paint));
+    addDrawOp(new (alloc()) DrawPatchOp(bitmapPtr, patchPtr,
+            dstLeft, dstTop, dstRight, dstBottom, paint));
 }
 
 void DisplayListCanvas::drawColor(int color, SkXfermode::Mode mode) {
diff --git a/libs/hwui/DisplayListCanvas.h b/libs/hwui/DisplayListCanvas.h
index f3f5713..3b61904 100644
--- a/libs/hwui/DisplayListCanvas.h
+++ b/libs/hwui/DisplayListCanvas.h
@@ -79,10 +79,6 @@
 // HWUI Canvas draw operations
 // ----------------------------------------------------------------------------
 
-    // TODO: move drawPatch() to Canvas.h
-    void drawPatch(const SkBitmap& bitmap, const Res_png_9patch* patch,
-            float left, float top, float right, float bottom, const SkPaint* paint);
-
     // Shapes
     void drawRoundRect(CanvasPropertyPrimitive* left, CanvasPropertyPrimitive* top,
                 CanvasPropertyPrimitive* right, CanvasPropertyPrimitive* bottom,
@@ -209,6 +205,9 @@
             float dstRight, float dstBottom, const SkPaint* paint) override;
     virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,
             const float* vertices, const int* colors, const SkPaint* paint) override;
+    virtual void drawNinePatch(const SkBitmap& bitmap, const android::Res_png_9patch& chunk,
+            float dstLeft, float dstTop, float dstRight, float dstBottom,
+            const SkPaint* paint) override;
 
     // Text
     virtual void drawText(const uint16_t* glyphs, const float* positions, int count,
diff --git a/libs/hwui/SkiaCanvas.cpp b/libs/hwui/SkiaCanvas.cpp
index b2d1fec..f7dd83a 100644
--- a/libs/hwui/SkiaCanvas.cpp
+++ b/libs/hwui/SkiaCanvas.cpp
@@ -124,6 +124,9 @@
             float dstRight, float dstBottom, const SkPaint* paint) override;
     virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,
             const float* vertices, const int* colors, const SkPaint* paint) override;
+    virtual void drawNinePatch(const SkBitmap& bitmap, const android::Res_png_9patch& chunk,
+            float dstLeft, float dstTop, float dstRight, float dstBottom,
+            const SkPaint* paint) override;
 
     virtual void drawText(const uint16_t* text, const float* positions, int count,
             const SkPaint& paint, float x, float y,
@@ -680,6 +683,12 @@
                          indexCount, tmpPaint);
 }
 
+void SkiaCanvas::drawNinePatch(const SkBitmap& bitmap, const Res_png_9patch& chunk,
+        float dstLeft, float dstTop, float dstRight, float dstBottom, const SkPaint* paint) {
+    SkRect bounds = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom);
+    NinePatch::Draw(mCanvas, bounds, bitmap, chunk, paint, nullptr);
+}
+
 // ----------------------------------------------------------------------------
 // Canvas draw operations: Text
 // ----------------------------------------------------------------------------
diff --git a/libs/hwui/utils/NinePatch.h b/libs/hwui/utils/NinePatch.h
new file mode 100644
index 0000000..323e563
--- /dev/null
+++ b/libs/hwui/utils/NinePatch.h
@@ -0,0 +1,37 @@
+/*
+**
+** Copyright 2015, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#ifndef ANDROID_GRAPHICS_NINEPATCH_H
+#define ANDROID_GRAPHICS_NINEPATCH_H
+
+#include <androidfw/ResourceTypes.h>
+#include <cutils/compiler.h>
+
+#include "SkCanvas.h"
+#include "SkRegion.h"
+
+namespace android {
+
+class ANDROID_API NinePatch {
+public:
+    static void Draw(SkCanvas* canvas, const SkRect& bounds, const SkBitmap& bitmap,
+            const Res_png_9patch& chunk, const SkPaint* paint, SkRegion** outRegion);
+};
+
+} // namespace android
+
+#endif // ANDROID_GRAPHICS_NINEPATCH_H
diff --git a/core/jni/android/graphics/NinePatchImpl.cpp b/libs/hwui/utils/NinePatchImpl.cpp
similarity index 97%
rename from core/jni/android/graphics/NinePatchImpl.cpp
rename to libs/hwui/utils/NinePatchImpl.cpp
index 978c4a5..f51f5df 100644
--- a/core/jni/android/graphics/NinePatchImpl.cpp
+++ b/libs/hwui/utils/NinePatchImpl.cpp
@@ -15,11 +15,7 @@
 ** limitations under the License.
 */
 
-#define LOG_TAG "NinePatch"
-#define LOG_NDEBUG 1
-
-#include <androidfw/ResourceTypes.h>
-#include <utils/Log.h>
+#include "utils/NinePatch.h"
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
@@ -30,6 +26,8 @@
 
 #include <utils/Log.h>
 
+namespace android {
+
 static const bool kUseTrace = true;
 static bool gTrace = false;
 
@@ -97,9 +95,9 @@
     return srcSpace * stretchySpaceRemaining / numStrechyPixelsRemaining;
 }
 
-void NinePatch_Draw(SkCanvas* canvas, const SkRect& bounds,
-                       const SkBitmap& bitmap, const android::Res_png_9patch& chunk,
-                       const SkPaint* paint, SkRegion** outRegion) {
+void NinePatch::Draw(SkCanvas* canvas, const SkRect& bounds,
+                     const SkBitmap& bitmap, const Res_png_9patch& chunk,
+                     const SkPaint* paint, SkRegion** outRegion) {
     if (canvas && canvas->quickReject(bounds)) {
         return;
     }
@@ -324,3 +322,5 @@
         dstRightsHaveBeenCached = true;
     }
 }
+
+} // namespace android