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- /*
- * 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/SkDisplacementMapEffect.h"
- #include "include/effects/SkImageSource.h"
- #include "tools/ToolUtils.h"
- #include <utility>
- 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<SkImageFilter> displ(SkImageSource::Make(fCheckerboard));
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kG_ChannelSelectorType, 0.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 0, 0, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kB_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType, 16.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 100, 0, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kB_ChannelSelectorType, 32.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 200, 0, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType, 48.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 300, 0, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType, 64.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 400, 0, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kG_ChannelSelectorType, 40.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 0, 100, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kB_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 100, 100, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kB_ChannelSelectorType, 40.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 200, 100, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 300, 100, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 400, 100, paint);
- SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(30, 30, 40, 40));
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- 0.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 0, 200, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kB_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- 16.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 100, 200, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kB_ChannelSelectorType,
- 32.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 200, 200, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- 48.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 300, 200, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- 64.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 400, 200, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- 40.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 0, 300, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kB_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- 40.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 100, 300, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kB_ChannelSelectorType,
- 40.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 200, 300, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- 40.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 300, 300, paint);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- 40.0f, displ, nullptr, &cropRect));
- this->drawClippedBitmap(canvas, 400, 300, paint);
- // Test for negative scale.
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- -40.0f, displ, nullptr));
- this->drawClippedBitmap(canvas, 500, 0, paint);
- // Tests for images of different sizes
- displ = SkImageSource::Make(fSmall);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- 40.0f, std::move(displ), nullptr));
- this->drawClippedBitmap(canvas, 0, 400, paint);
- displ = SkImageSource::Make(fLarge);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kB_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- 40.0f, std::move(displ), nullptr));
- this->drawClippedBitmap(canvas, 100, 400, paint);
- displ = SkImageSource::Make(fLargeW);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kR_ChannelSelectorType,
- SkDisplacementMapEffect::kB_ChannelSelectorType,
- 40.0f, std::move(displ), nullptr));
- this->drawClippedBitmap(canvas, 200, 400, paint);
- displ = SkImageSource::Make(fLargeH);
- paint.setImageFilter(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- 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(SkDisplacementMapEffect::Make(
- SkDisplacementMapEffect::kG_ChannelSelectorType,
- SkDisplacementMapEffect::kA_ChannelSelectorType,
- 40.0f, nullptr, nullptr));
- this->drawClippedBitmap(canvas, 400, 400, paint);
- }
- private:
- SkBitmap fBitmap;
- sk_sp<SkImage> fCheckerboard, fSmall, fLarge, fLargeW, fLargeH;
- typedef GM INHERITED;
- };
- //////////////////////////////////////////////////////////////////////////////
- DEF_GM(return new DisplacementMapGM;)
- }
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