| /* |
| * 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 "gm/gm.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageFilter.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/effects/SkImageFilters.h" |
| #include "tools/ToolUtils.h" |
| #include "tools/fonts/FontToolUtils.h" |
| |
| #include <utility> |
| |
| namespace skiagm { |
| |
| class DisplacementMapGM : public GM { |
| public: |
| DisplacementMapGM() { |
| this->setBGColor(0xFF000000); |
| } |
| |
| protected: |
| SkString getName() const override { return SkString("displacement"); } |
| |
| void onOnceBeforeDraw() override { |
| fImage = ToolUtils::CreateStringImage(80, 80, 0xFF884422, 15, 55, 96, "g"); |
| |
| SkColor c1 = ToolUtils::color_to_565(0xFF244484); |
| SkColor c2 = ToolUtils::color_to_565(0xFF804020); |
| |
| fCheckerboard = ToolUtils::create_checkerboard_image(80, 80, c1, c2, 8); |
| fSmall = ToolUtils::create_checkerboard_image(64, 64, c1, c2, 8); |
| fLarge = ToolUtils::create_checkerboard_image(96, 96, c1, c2, 8); |
| fLargeW = ToolUtils::create_checkerboard_image(96, 64, c1, c2, 8); |
| fLargeH = ToolUtils::create_checkerboard_image(64, 96, c1, c2, 8); |
| } |
| |
| SkISize getISize() override { return SkISize::Make(600, 500); } |
| |
| void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) const { |
| canvas->save(); |
| canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); |
| canvas->clipIRect(fImage->bounds()); |
| canvas->drawImage(fImage, 0, 0, SkSamplingOptions(), &paint); |
| canvas->restore(); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->clear(SK_ColorBLACK); |
| SkPaint paint; |
| sk_sp<SkImageFilter> displ(SkImageFilters::Image(fCheckerboard, SkFilterMode::kLinear)); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kG, 0.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 0, 0, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kB, SkColorChannel::kA, 16.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 100, 0, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kB, 32.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 200, 0, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kG, SkColorChannel::kA, 48.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 300, 0, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kA, 64.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 400, 0, paint); |
| |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kG, 40.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 0, 100, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kB, SkColorChannel::kA, 40.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 100, 100, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kB, 40.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 200, 100, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kG, SkColorChannel::kA, 40.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 300, 100, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kA, 40.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 400, 100, paint); |
| |
| SkIRect cropRect = SkIRect::MakeXYWH(30, 30, 40, 40); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kG, 0.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 0, 200, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kB, SkColorChannel::kA, 16.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 100, 200, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kB, 32.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 200, 200, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kG, SkColorChannel::kA, 48.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 300, 200, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kA, 64.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 400, 200, paint); |
| |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kG, 40.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 0, 300, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kB, SkColorChannel::kA, 40.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 100, 300, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kB, 40.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 200, 300, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kG, SkColorChannel::kA, 40.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 300, 300, paint); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kA, 40.0f, displ, nullptr, &cropRect)); |
| this->drawClippedBitmap(canvas, 400, 300, paint); |
| |
| // Test for negative scale. |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kG, SkColorChannel::kA, -40.0f, displ, nullptr)); |
| this->drawClippedBitmap(canvas, 500, 0, paint); |
| |
| // Tests for images of different sizes |
| displ = SkImageFilters::Image(fSmall, SkFilterMode::kLinear); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kG, 40.0f, std::move(displ), nullptr)); |
| this->drawClippedBitmap(canvas, 0, 400, paint); |
| displ = SkImageFilters::Image(fLarge, SkFilterMode::kLinear); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kB, SkColorChannel::kA, 40.0f, std::move(displ), nullptr)); |
| this->drawClippedBitmap(canvas, 100, 400, paint); |
| displ = SkImageFilters::Image(fLargeW, SkFilterMode::kLinear); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kR, SkColorChannel::kB, 40.0f, std::move(displ), nullptr)); |
| this->drawClippedBitmap(canvas, 200, 400, paint); |
| displ = SkImageFilters::Image(fLargeH, SkFilterMode::kLinear); |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kG, SkColorChannel::kA, 40.0f, std::move(displ), nullptr)); |
| this->drawClippedBitmap(canvas, 300, 400, paint); |
| |
| // Test for no given displacement input. In this case, both displacement |
| // and color should use the same bitmap, given to SkCanvas::drawBitmap() |
| // as an input argument. |
| paint.setImageFilter(SkImageFilters::DisplacementMap( |
| SkColorChannel::kG, SkColorChannel::kA, 40.0f, nullptr, nullptr)); |
| this->drawClippedBitmap(canvas, 400, 400, paint); |
| } |
| |
| private: |
| sk_sp<SkImage> fImage; |
| sk_sp<SkImage> fCheckerboard, fSmall, fLarge, fLargeW, fLargeH; |
| |
| using INHERITED = GM; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new DisplacementMapGM;) |
| } // namespace skiagm |