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- /*
- * 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 "gm/gm.h"
- #include "include/core/SkBitmap.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkFilterQuality.h"
- #include "include/core/SkImage.h"
- #include "include/core/SkImageFilter.h"
- #include "include/core/SkMatrix.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkPoint.h"
- #include "include/core/SkPoint3.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkShader.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkSurface.h"
- #include "include/core/SkTileMode.h"
- #include "include/core/SkTypes.h"
- #include "include/effects/SkBlurImageFilter.h"
- #include "include/effects/SkDisplacementMapEffect.h"
- #include "include/effects/SkDropShadowImageFilter.h"
- #include "include/effects/SkGradientShader.h"
- #include "include/effects/SkImageSource.h"
- #include "include/effects/SkLightingImageFilter.h"
- #include "include/effects/SkMorphologyImageFilter.h"
- #include "include/effects/SkOffsetImageFilter.h"
- #include "include/effects/SkPaintImageFilter.h"
- #include "include/effects/SkPerlinNoiseShader.h"
- #include "tools/ToolUtils.h"
- #include <utility>
- #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, SkTileMode::kClamp));
- 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(
- ToolUtils::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;)
- }
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