| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "sk_tool_utils.h" |
| #include "SkBlurImageFilter.h" |
| #include "SkColor.h" |
| #include "SkDisplacementMapEffect.h" |
| #include "SkDropShadowImageFilter.h" |
| #include "SkGradientShader.h" |
| #include "SkImage.h" |
| #include "SkImageSource.h" |
| #include "SkLightingImageFilter.h" |
| #include "SkMorphologyImageFilter.h" |
| #include "SkOffsetImageFilter.h" |
| #include "SkPaintImageFilter.h" |
| #include "SkPerlinNoiseShader.h" |
| #include "SkPoint3.h" |
| #include "SkScalar.h" |
| #include "SkSurface.h" |
| #include "gm.h" |
| |
| #define RESIZE_FACTOR_X SkIntToScalar(2) |
| #define RESIZE_FACTOR_Y SkIntToScalar(5) |
| |
| namespace skiagm { |
| |
| class ImageFiltersClippedGM : public GM { |
| public: |
| ImageFiltersClippedGM() { |
| this->setBGColor(0x00000000); |
| } |
| |
| protected: |
| SkString onShortName() override { |
| return SkString("imagefiltersclipped"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(860, 500); |
| } |
| |
| void makeGradientCircle(int width, int height) { |
| SkScalar x = SkIntToScalar(width / 2); |
| SkScalar y = SkIntToScalar(height / 2); |
| SkScalar radius = SkMinScalar(x, y) * 0.8f; |
| SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(width, height)); |
| SkCanvas* canvas = surface->getCanvas(); |
| canvas->clear(0x00000000); |
| SkColor colors[2]; |
| colors[0] = SK_ColorWHITE; |
| colors[1] = SK_ColorBLACK; |
| SkAutoTUnref<SkShader> shader( |
| SkGradientShader::CreateRadial(SkPoint::Make(x, y), radius, colors, nullptr, 2, |
| SkShader::kClamp_TileMode) |
| ); |
| SkPaint paint; |
| paint.setShader(shader); |
| canvas->drawCircle(x, y, radius, paint); |
| fGradientCircle.reset(surface->newImageSnapshot()); |
| } |
| |
| static void draw_clipped_filter(SkCanvas* canvas, SkImageFilter* filter, size_t i, |
| const SkRect& primBounds, const SkRect& clipBounds) { |
| SkPaint paint; |
| paint.setColor(SK_ColorWHITE); |
| paint.setImageFilter(filter); |
| paint.setAntiAlias(true); |
| canvas->save(); |
| canvas->clipRect(clipBounds); |
| if (5 == i) { |
| canvas->translate(SkIntToScalar(16), SkIntToScalar(-32)); |
| } else if (6 == i) { |
| canvas->scale(SkScalarInvert(RESIZE_FACTOR_X), |
| SkScalarInvert(RESIZE_FACTOR_Y)); |
| } |
| canvas->drawCircle(primBounds.centerX(), primBounds.centerY(), |
| primBounds.width() * 2 / 5, paint); |
| canvas->restore(); |
| } |
| |
| void onOnceBeforeDraw() override { |
| fCheckerboard.reset(SkImage::NewFromBitmap |
| (sk_tool_utils::create_checkerboard_bitmap(64, 64, 0xFFA0A0A0, 0xFF404040, 8))); |
| this->makeGradientCircle(64, 64); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->clear(SK_ColorBLACK); |
| |
| SkAutoTUnref<SkImageFilter> gradient(SkImageSource::Create(fGradientCircle)); |
| SkAutoTUnref<SkImageFilter> checkerboard(SkImageSource::Create(fCheckerboard)); |
| SkAutoTUnref<SkShader> noise(SkPerlinNoiseShader::CreateFractalNoise( |
| SkDoubleToScalar(0.1), SkDoubleToScalar(0.05), 1, 0)); |
| SkMatrix resizeMatrix; |
| resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y); |
| SkPoint3 pointLocation = SkPoint3::Make(32, 32, SkIntToScalar(10)); |
| |
| SkImageFilter* filters[] = { |
| SkBlurImageFilter::Create(SkIntToScalar(12), SkIntToScalar(12)), |
| SkDropShadowImageFilter::Create(SkIntToScalar(10), SkIntToScalar(10), |
| SkIntToScalar(3), SkIntToScalar(3), SK_ColorGREEN, |
| SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode), |
| SkDisplacementMapEffect::Create(SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkIntToScalar(12), |
| gradient.get(), |
| checkerboard.get()), |
| SkDilateImageFilter::Create(2, 2, checkerboard.get()), |
| SkErodeImageFilter::Create(2, 2, checkerboard.get()), |
| SkOffsetImageFilter::Create(SkIntToScalar(-16), SkIntToScalar(32)), |
| SkImageFilter::CreateMatrixFilter(resizeMatrix, kNone_SkFilterQuality), |
| SkLightingImageFilter::CreatePointLitDiffuse(pointLocation, SK_ColorWHITE, SK_Scalar1, SkIntToScalar(2), checkerboard.get()), |
| |
| }; |
| |
| SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64)); |
| SkScalar margin = SkIntToScalar(16); |
| SkRect bounds = r; |
| bounds.outset(margin, margin); |
| |
| canvas->save(); |
| for (int xOffset = 0; xOffset < 80; xOffset += 16) { |
| canvas->save(); |
| bounds.fLeft = SkIntToScalar(xOffset); |
| for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { |
| draw_clipped_filter(canvas, filters[i], i, r, bounds); |
| canvas->translate(r.width() + margin, 0); |
| } |
| canvas->restore(); |
| canvas->translate(0, r.height() + margin); |
| } |
| canvas->restore(); |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { |
| SkSafeUnref(filters[i]); |
| } |
| |
| SkPaint noisePaint; |
| noisePaint.setShader(noise); |
| SkAutoTUnref<SkImageFilter> rectFilter(SkPaintImageFilter::Create(noisePaint)); |
| canvas->translate(SK_ARRAY_COUNT(filters)*(r.width() + margin), 0); |
| for (int xOffset = 0; xOffset < 80; xOffset += 16) { |
| bounds.fLeft = SkIntToScalar(xOffset); |
| draw_clipped_filter(canvas, rectFilter, 0, r, bounds); |
| canvas->translate(0, r.height() + margin); |
| } |
| } |
| |
| private: |
| SkAutoTUnref<SkImage> fCheckerboard, fGradientCircle; |
| |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new ImageFiltersClippedGM;) |
| } |