| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| |
| #include "SkArithmeticMode.h" |
| #include "SkBitmapSource.h" |
| #include "SkBlurImageFilter.h" |
| #include "SkColorFilter.h" |
| #include "SkColorFilterImageFilter.h" |
| #include "SkColorMatrixFilter.h" |
| #include "SkFlattenableBuffers.h" |
| #include "SkMergeImageFilter.h" |
| #include "SkMorphologyImageFilter.h" |
| #include "SkOnce.h" |
| #include "SkTestImageFilters.h" |
| #include "SkXfermodeImageFilter.h" |
| |
| // More closely models how Blink's OffsetFilter works as of 10/23/13. SkOffsetImageFilter doesn't |
| // perform a draw and this one does. |
| class SimpleOffsetFilter : public SkImageFilter { |
| public: |
| SimpleOffsetFilter(SkScalar dx, SkScalar dy, SkImageFilter* input) |
| : SkImageFilter(input), fDX(dx), fDY(dy) {} |
| |
| virtual bool onFilterImage(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm, |
| SkBitmap* dst, SkIPoint* offset) SK_OVERRIDE { |
| SkBitmap source = src; |
| SkImageFilter* input = getInput(0); |
| SkIPoint srcOffset = SkIPoint::Make(0, 0); |
| if (NULL != input && !input->filterImage(proxy, src, ctm, &source, &srcOffset)) { |
| return false; |
| } |
| |
| SkIRect bounds; |
| source.getBounds(&bounds); |
| |
| if (!this->applyCropRect(&bounds, ctm)) { |
| return false; |
| } |
| |
| SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height())); |
| SkCanvas canvas(device); |
| SkPaint paint; |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| canvas.drawBitmap(source, fDX - bounds.left(), fDY - bounds.top(), &paint); |
| *dst = device->accessBitmap(false); |
| offset->fX += bounds.left(); |
| offset->fY += bounds.top(); |
| return true; |
| } |
| |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SimpleOffsetFilter); |
| |
| protected: |
| explicit SimpleOffsetFilter(SkFlattenableReadBuffer& buffer) |
| : SkImageFilter(buffer) { |
| fDX = buffer.readScalar(); |
| fDY = buffer.readScalar(); |
| } |
| |
| virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE { |
| this->SkImageFilter::flatten(buffer); |
| buffer.writeScalar(fDX); |
| buffer.writeScalar(fDY); |
| } |
| |
| private: |
| SkScalar fDX, fDY; |
| }; |
| |
| static void init_flattenable(int*) { |
| SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SimpleOffsetFilter) |
| } |
| |
| class ImageFiltersGraphGM : public skiagm::GM { |
| public: |
| ImageFiltersGraphGM() : fInitialized(false) { |
| int dummy; |
| SK_DECLARE_STATIC_ONCE(once); |
| SkOnce(&once, init_flattenable, &dummy); |
| } |
| |
| protected: |
| virtual SkString onShortName() { |
| return SkString("imagefiltersgraph"); |
| } |
| |
| void make_bitmap() { |
| fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 100, 100); |
| fBitmap.allocPixels(); |
| SkBitmapDevice device(fBitmap); |
| SkCanvas canvas(&device); |
| canvas.clear(0x00000000); |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setColor(0xFFFFFFFF); |
| paint.setTextSize(SkIntToScalar(96)); |
| const char* str = "e"; |
| canvas.drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint); |
| } |
| |
| void drawClippedBitmap(SkCanvas* canvas, const SkBitmap& bitmap, const SkPaint& paint) { |
| canvas->save(); |
| canvas->clipRect(SkRect::MakeXYWH(0, 0, |
| SkIntToScalar(bitmap.width()), SkIntToScalar(bitmap.height()))); |
| canvas->drawBitmap(bitmap, 0, 0, &paint); |
| canvas->restore(); |
| } |
| |
| virtual SkISize onISize() { return SkISize::Make(500, 150); } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| if (!fInitialized) { |
| this->make_bitmap(); |
| fInitialized = true; |
| } |
| canvas->clear(0x00000000); |
| { |
| SkAutoTUnref<SkImageFilter> bitmapSource(new SkBitmapSource(fBitmap)); |
| SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(SK_ColorRED, |
| SkXfermode::kSrcIn_Mode)); |
| SkAutoTUnref<SkImageFilter> blur(new SkBlurImageFilter(4.0f, 4.0f, bitmapSource)); |
| SkAutoTUnref<SkImageFilter> erode(new SkErodeImageFilter(4, 4, blur)); |
| SkAutoTUnref<SkImageFilter> color(SkColorFilterImageFilter::Create(cf, erode)); |
| SkAutoTUnref<SkImageFilter> merge(new SkMergeImageFilter(blur, color)); |
| |
| SkPaint paint; |
| paint.setImageFilter(merge); |
| canvas->drawPaint(paint); |
| canvas->translate(SkIntToScalar(100), 0); |
| } |
| { |
| SkAutoTUnref<SkImageFilter> morph(new SkDilateImageFilter(5, 5)); |
| |
| SkScalar matrix[20] = { SK_Scalar1, 0, 0, 0, 0, |
| 0, SK_Scalar1, 0, 0, 0, |
| 0, 0, SK_Scalar1, 0, 0, |
| 0, 0, 0, SkFloatToScalar(0.5f), 0 }; |
| |
| SkAutoTUnref<SkColorFilter> matrixFilter(new SkColorMatrixFilter(matrix)); |
| SkAutoTUnref<SkImageFilter> colorMorph(SkColorFilterImageFilter::Create(matrixFilter, morph)); |
| SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(SkXfermode::kSrcOver_Mode)); |
| SkAutoTUnref<SkImageFilter> blendColor(new SkXfermodeImageFilter(mode, colorMorph)); |
| |
| SkPaint paint; |
| paint.setImageFilter(blendColor); |
| drawClippedBitmap(canvas, fBitmap, paint); |
| canvas->translate(SkIntToScalar(100), 0); |
| } |
| { |
| SkScalar matrix[20] = { SK_Scalar1, 0, 0, 0, 0, |
| 0, SK_Scalar1, 0, 0, 0, |
| 0, 0, SK_Scalar1, 0, 0, |
| 0, 0, 0, SkFloatToScalar(0.5f), 0 }; |
| SkColorMatrixFilter matrixCF(matrix); |
| SkAutoTUnref<SkImageFilter> matrixFilter(SkColorFilterImageFilter::Create(&matrixCF)); |
| SimpleOffsetFilter offsetFilter(SkIntToScalar(10), SkIntToScalar(10), matrixFilter); |
| |
| SkAutoTUnref<SkXfermode> arith(SkArithmeticMode::Create(0, SK_Scalar1, SK_Scalar1, 0)); |
| SkXfermodeImageFilter arithFilter(arith, matrixFilter, &offsetFilter); |
| |
| SkPaint paint; |
| paint.setImageFilter(&arithFilter); |
| drawClippedBitmap(canvas, fBitmap, paint); |
| canvas->translate(SkIntToScalar(100), 0); |
| } |
| { |
| SkAutoTUnref<SkImageFilter> blur(new SkBlurImageFilter( |
| SkIntToScalar(10), SkIntToScalar(10))); |
| |
| SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(SkXfermode::kSrcIn_Mode)); |
| SkImageFilter::CropRect cropRect(SkRect::MakeWH(SkIntToScalar(95), SkIntToScalar(100))); |
| SkAutoTUnref<SkImageFilter> blend(new SkXfermodeImageFilter(mode, blur, NULL, &cropRect)); |
| |
| SkPaint paint; |
| paint.setImageFilter(blend); |
| drawClippedBitmap(canvas, fBitmap, paint); |
| canvas->translate(SkIntToScalar(100), 0); |
| } |
| } |
| |
| private: |
| typedef GM INHERITED; |
| SkBitmap fBitmap; |
| bool fInitialized; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static skiagm::GM* MyFactory(void*) { return new ImageFiltersGraphGM; } |
| static skiagm::GMRegistry reg(MyFactory); |