Implement SkPictureImageFilter bounds computation.

tests/ImageFilterTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBicubicImageFilter.h"
 #include "SkBitmap.h"
 #include "SkBitmapDevice.h"
 #include "SkBitmapSource.h"
 #include "SkBlurImageFilter.h"
 #include "SkCanvas.h"
 #include "SkColorFilterImageFilter.h"
 #include "SkColorMatrixFilter.h"
 #include "SkDeviceImageFilterProxy.h"
 #include "SkDisplacementMapEffect.h"
 #include "SkDropShadowImageFilter.h"
 #include "SkFlattenableBuffers.h"
 #include "SkGradientShader.h"
 #include "SkLightingImageFilter.h"
 #include "SkMatrixConvolutionImageFilter.h"
 #include "SkMatrixImageFilter.h"
 #include "SkMergeImageFilter.h"
 #include "SkMorphologyImageFilter.h"
 #include "SkOffsetImageFilter.h"
 #include "SkPicture.h"
+#include "SkPictureImageFilter.h"
 #include "SkPictureRecorder.h"
 #include "SkRect.h"
 #include "SkTileImageFilter.h"
 #include "SkXfermodeImageFilter.h"
 #include "Test.h"
 
 #if SK_SUPPORT_GPU
 #include "GrContextFactory.h"
 #include "SkGpuDevice.h"
 #endif
@@ skipping 262 matching lines @@
     SkScalar gain = SK_Scalar1, bias = 0;
     SkScalar five = SkIntToScalar(5);
 
     SkAutoTUnref<SkImageFilter> gradient_source(SkBitmapSource::Create(make_gradient_circle(64, 64)));
     SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(five, five));
     SkMatrix matrix;
 
     matrix.setTranslate(SK_Scalar1, SK_Scalar1);
     matrix.postRotate(SkIntToScalar(45), SK_Scalar1, SK_Scalar1);
 
+    SkRTreeFactory factory;
+    SkPictureRecorder recorder;
+    SkCanvas* recordingCanvas = recorder.beginRecording(64, 64, &factory, 0);
+
+    SkPaint greenPaint;
+    greenPaint.setColor(SK_ColorGREEN);
+    recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 30, 20)), greenPaint);
+    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
+    SkAutoTUnref<SkImageFilter> pictureFilter(SkPictureImageFilter::Create(picture.get()));
+
     struct {
         const char*    fName;
         SkImageFilter* fFilter;
     } filters[] = {
         { "color filter", SkColorFilterImageFilter::Create(cf.get()) },
         { "displacement map", SkDisplacementMapEffect::Create(
               SkDisplacementMapEffect::kR_ChannelSelectorType,
               SkDisplacementMapEffect::kB_ChannelSelectorType,
               20.0f, gradient_source.get()) },
         { "blur", SkBlurImageFilter::Create(SK_Scalar1, SK_Scalar1) },
         { "drop shadow", SkDropShadowImageFilter::Create(
               SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_ColorGREEN) },
         { "diffuse lighting", SkLightingImageFilter::CreatePointLitDiffuse(
               location, SK_ColorGREEN, 0, 0) },
         { "specular lighting",
               SkLightingImageFilter::CreatePointLitSpecular(location, SK_ColorGREEN, 0, 0, 0) },
         { "matrix convolution",
               SkMatrixConvolutionImageFilter::Create(
                   kernelSize, kernel, gain, bias, SkIPoint::Make(1, 1),
                   SkMatrixConvolutionImageFilter::kRepeat_TileMode, false) },
         { "merge", SkMergeImageFilter::Create(NULL, NULL, SkXfermode::kSrcOver_Mode) },
         { "offset", SkOffsetImageFilter::Create(SK_Scalar1, SK_Scalar1) },
         { "dilate", SkDilateImageFilter::Create(3, 2) },
         { "erode", SkErodeImageFilter::Create(2, 3) },
         { "tile", SkTileImageFilter::Create(SkRect::MakeXYWH(0, 0, 50, 50),
                                             SkRect::MakeXYWH(0, 0, 100, 100), NULL) },
         { "matrix", SkMatrixImageFilter::Create(matrix, SkPaint::kLow_FilterLevel) },
         { "blur and offset", SkOffsetImageFilter::Create(five, five, blur.get()) },
+        { "picture and blur", SkBlurImageFilter::Create(five, five, pictureFilter.get()) },
     };
 
     SkBitmap untiledResult, tiledResult;
     int width = 64, height = 64;
     untiledResult.allocN32Pixels(width, height);
     tiledResult.allocN32Pixels(width, height);
     SkCanvas tiledCanvas(tiledResult);
     SkCanvas untiledCanvas(untiledResult);
     int tileSize = 8;
 
@@ skipping 332 matching lines @@
 }
 
 DEF_GPUTEST(XfermodeImageFilterCroppedInputGPU, reporter, factory) {
     GrContext* context = factory->get(static_cast<GrContextFactory::GLContextType>(0));
     SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(context,
                                                          SkImageInfo::MakeN32Premul(1, 1),
                                                          0));
     test_xfermode_cropped_input(device, reporter);
 }
 #endif