| /* |
| * 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 "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" |
| #include "sk_tool_utils.h" |
| |
| #define RESIZE_FACTOR_X SkIntToScalar(2) |
| #define RESIZE_FACTOR_Y SkIntToScalar(5) |
| |
| static sk_sp<SkImage> make_gradient_circle(int width, int height) { |
| SkScalar x = SkIntToScalar(width / 2); |
| SkScalar y = SkIntToScalar(height / 2); |
| SkScalar radius = SkMinScalar(x, y) * 0.8f; |
| auto surface(SkSurface::MakeRasterN32Premul(width, height)); |
| SkCanvas* canvas = surface->getCanvas(); |
| canvas->clear(0x00000000); |
| SkColor colors[2]; |
| colors[0] = SK_ColorWHITE; |
| colors[1] = SK_ColorBLACK; |
| SkPaint paint; |
| paint.setShader(SkGradientShader::MakeRadial(SkPoint::Make(x, y), radius, colors, nullptr, |
| 2, SkShader::kClamp_TileMode)); |
| canvas->drawCircle(x, y, radius, paint); |
| return surface->makeImageSnapshot(); |
| } |
| |
| static void draw_clipped_filter(SkCanvas* canvas, sk_sp<SkImageFilter> filter, size_t i, |
| const SkRect& primBounds, const SkRect& clipBounds) { |
| SkPaint paint; |
| paint.setColor(SK_ColorWHITE); |
| paint.setImageFilter(std::move(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(); |
| } |
| |
| 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 onOnceBeforeDraw() override { |
| fCheckerboard = SkImage::MakeFromBitmap |
| (sk_tool_utils::create_checkerboard_bitmap(64, 64, 0xFFA0A0A0, 0xFF404040, 8)); |
| fGradientCircle = make_gradient_circle(64, 64); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->clear(SK_ColorBLACK); |
| |
| sk_sp<SkImageFilter> gradient(SkImageSource::Make(fGradientCircle)); |
| sk_sp<SkImageFilter> checkerboard(SkImageSource::Make(fCheckerboard)); |
| SkMatrix resizeMatrix; |
| resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y); |
| SkPoint3 pointLocation = SkPoint3::Make(32, 32, SkIntToScalar(10)); |
| |
| sk_sp<SkImageFilter> filters[] = { |
| SkBlurImageFilter::Make(SkIntToScalar(12), SkIntToScalar(12), nullptr), |
| SkDropShadowImageFilter::Make( |
| SkIntToScalar(10), SkIntToScalar(10), |
| SkIntToScalar(3), SkIntToScalar(3), SK_ColorGREEN, |
| SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, |
| nullptr), |
| SkDisplacementMapEffect::Make(SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkIntToScalar(12), |
| std::move(gradient), |
| checkerboard), |
| SkDilateImageFilter::Make(2, 2, checkerboard), |
| SkErodeImageFilter::Make(2, 2, checkerboard), |
| SkOffsetImageFilter::Make(SkIntToScalar(-16), SkIntToScalar(32), nullptr), |
| SkImageFilter::MakeMatrixFilter(resizeMatrix, kNone_SkFilterQuality, nullptr), |
| SkLightingImageFilter::MakePointLitDiffuse(pointLocation, SK_ColorWHITE, SK_Scalar1, |
| SkIntToScalar(2), checkerboard), |
| |
| }; |
| |
| 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(); |
| |
| SkPaint noisePaint; |
| noisePaint.setShader(SkPerlinNoiseShader::MakeFractalNoise(0.1f, 0.05f, 1, 0)); |
| |
| sk_sp<SkImageFilter> rectFilter(SkPaintImageFilter::Make(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: |
| sk_sp<SkImage> fCheckerboard, fGradientCircle; |
| |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new ImageFiltersClippedGM;) |
| } |