/* * 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 namespace skiagm { class DisplacementMapGM : public GM { public: DisplacementMapGM() { this->setBGColor(0xFF000000); } protected: SkString onShortName() override { return SkString("displacement"); } void onOnceBeforeDraw() override { fBitmap = ToolUtils::create_string_bitmap(80, 80, 0xFF884422, 15, 55, 96, "g"); SkColor c1 = ToolUtils::color_to_565(0xFF244484); SkColor c2 = ToolUtils::color_to_565(0xFF804020); fCheckerboard = SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(80, 80, c1, c2, 8)); fSmall = SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(64, 64, c1, c2, 8)); fLarge = SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(96, 96, c1, c2, 8)); fLargeW = SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(96, 64, c1, c2, 8)); fLargeH = SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(64, 96, c1, c2, 8)); } SkISize onISize() 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->clipRect(SkRect::MakeWH(SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height()))); canvas->drawBitmap(fBitmap, 0, 0, &paint); canvas->restore(); } void onDraw(SkCanvas* canvas) override { canvas->clear(SK_ColorBLACK); SkPaint paint; sk_sp displ(SkImageFilters::Image(fCheckerboard)); 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); paint.setImageFilter(SkImageFilters::DisplacementMap( SkColorChannel::kR, SkColorChannel::kG, 40.0f, std::move(displ), nullptr)); this->drawClippedBitmap(canvas, 0, 400, paint); displ = SkImageFilters::Image(fLarge); paint.setImageFilter(SkImageFilters::DisplacementMap( SkColorChannel::kB, SkColorChannel::kA, 40.0f, std::move(displ), nullptr)); this->drawClippedBitmap(canvas, 100, 400, paint); displ = SkImageFilters::Image(fLargeW); paint.setImageFilter(SkImageFilters::DisplacementMap( SkColorChannel::kR, SkColorChannel::kB, 40.0f, std::move(displ), nullptr)); this->drawClippedBitmap(canvas, 200, 400, paint); displ = SkImageFilters::Image(fLargeH); 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: SkBitmap fBitmap; sk_sp fCheckerboard, fSmall, fLarge, fLargeW, fLargeH; typedef GM INHERITED; }; ////////////////////////////////////////////////////////////////////////////// DEF_GM(return new DisplacementMapGM;) }