174 lines
8.1 KiB
C++
174 lines
8.1 KiB
C++
/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkImageFilter.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/effects/SkImageFilters.h"
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#include "tools/ToolUtils.h"
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#include <utility>
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namespace skiagm {
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class DisplacementMapGM : public GM {
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public:
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DisplacementMapGM() {
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this->setBGColor(0xFF000000);
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}
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protected:
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SkString onShortName() override {
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return SkString("displacement");
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}
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void onOnceBeforeDraw() override {
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fImage = ToolUtils::create_string_image(80, 80, 0xFF884422, 15, 55, 96, "g");
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SkColor c1 = ToolUtils::color_to_565(0xFF244484);
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SkColor c2 = ToolUtils::color_to_565(0xFF804020);
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fCheckerboard = ToolUtils::create_checkerboard_image(80, 80, c1, c2, 8);
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fSmall = ToolUtils::create_checkerboard_image(64, 64, c1, c2, 8);
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fLarge = ToolUtils::create_checkerboard_image(96, 96, c1, c2, 8);
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fLargeW = ToolUtils::create_checkerboard_image(96, 64, c1, c2, 8);
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fLargeH = ToolUtils::create_checkerboard_image(64, 96, c1, c2, 8);
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}
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SkISize onISize() override {
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return SkISize::Make(600, 500);
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}
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void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) const {
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas->clipIRect(fImage->bounds());
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canvas->drawImage(fImage, 0, 0, SkSamplingOptions(), &paint);
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canvas->restore();
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}
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void onDraw(SkCanvas* canvas) override {
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canvas->clear(SK_ColorBLACK);
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SkPaint paint;
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sk_sp<SkImageFilter> displ(SkImageFilters::Image(fCheckerboard));
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kG, 0.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 0, 0, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kB, SkColorChannel::kA, 16.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 100, 0, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kB, 32.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 200, 0, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kG, SkColorChannel::kA, 48.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 300, 0, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kA, 64.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 400, 0, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kG, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 0, 100, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kB, SkColorChannel::kA, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 100, 100, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kB, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 200, 100, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kG, SkColorChannel::kA, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 300, 100, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kA, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 400, 100, paint);
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SkIRect cropRect = SkIRect::MakeXYWH(30, 30, 40, 40);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kG, 0.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 0, 200, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kB, SkColorChannel::kA, 16.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 100, 200, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kB, 32.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 200, 200, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kG, SkColorChannel::kA, 48.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 300, 200, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kA, 64.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 400, 200, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kG, 40.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 0, 300, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kB, SkColorChannel::kA, 40.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 100, 300, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kB, 40.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 200, 300, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kG, SkColorChannel::kA, 40.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 300, 300, paint);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kA, 40.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 400, 300, paint);
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// Test for negative scale.
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kG, SkColorChannel::kA, -40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 500, 0, paint);
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// Tests for images of different sizes
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displ = SkImageFilters::Image(fSmall);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kG, 40.0f, std::move(displ), nullptr));
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this->drawClippedBitmap(canvas, 0, 400, paint);
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displ = SkImageFilters::Image(fLarge);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kB, SkColorChannel::kA, 40.0f, std::move(displ), nullptr));
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this->drawClippedBitmap(canvas, 100, 400, paint);
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displ = SkImageFilters::Image(fLargeW);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kR, SkColorChannel::kB, 40.0f, std::move(displ), nullptr));
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this->drawClippedBitmap(canvas, 200, 400, paint);
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displ = SkImageFilters::Image(fLargeH);
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kG, SkColorChannel::kA, 40.0f, std::move(displ), nullptr));
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this->drawClippedBitmap(canvas, 300, 400, paint);
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// Test for no given displacement input. In this case, both displacement
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// and color should use the same bitmap, given to SkCanvas::drawBitmap()
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// as an input argument.
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paint.setImageFilter(SkImageFilters::DisplacementMap(
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SkColorChannel::kG, SkColorChannel::kA, 40.0f, nullptr, nullptr));
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this->drawClippedBitmap(canvas, 400, 400, paint);
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}
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private:
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sk_sp<SkImage> fImage;
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sk_sp<SkImage> fCheckerboard, fSmall, fLarge, fLargeW, fLargeH;
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using INHERITED = GM;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new DisplacementMapGM;)
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} // namespace skiagm
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