210 lines
9.8 KiB
C++
210 lines
9.8 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 "SkDisplacementMapEffect.h"
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#include "SkImage.h"
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#include "SkImageSource.h"
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#include "gm.h"
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#include "sk_tool_utils.h"
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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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fBitmap = sk_tool_utils::create_string_bitmap(80, 80, 0xFF884422, 15, 55, 96, "g");
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SkColor c1 = sk_tool_utils::color_to_565(0xFF244484);
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SkColor c2 = sk_tool_utils::color_to_565(0xFF804020);
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fCheckerboard = SkImage::MakeFromBitmap(
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sk_tool_utils::create_checkerboard_bitmap(80, 80, c1, c2, 8));
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fSmall = SkImage::MakeFromBitmap(
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sk_tool_utils::create_checkerboard_bitmap(64, 64, c1, c2, 8));
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fLarge = SkImage::MakeFromBitmap(
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sk_tool_utils::create_checkerboard_bitmap(96, 96, c1, c2, 8));
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fLargeW =
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SkImage::MakeFromBitmap(sk_tool_utils::create_checkerboard_bitmap(96, 64, c1, c2, 8));
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fLargeH = SkImage::MakeFromBitmap(
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sk_tool_utils::create_checkerboard_bitmap(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->clipRect(SkRect::MakeWH(SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
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canvas->drawBitmap(fBitmap, 0, 0, &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(SkImageSource::Make(fCheckerboard));
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType, 0.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 0, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 16.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 100, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType, 32.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 200, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 48.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 300, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 64.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 400, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 0, 100, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 100, 100, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 200, 100, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 300, 100, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ, nullptr));
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this->drawClippedBitmap(canvas, 400, 100, paint);
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SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(30, 30, 40, 40));
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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0.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 0, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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16.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 100, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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32.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 200, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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48.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 300, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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64.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 400, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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40.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 0, 300, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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40.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 100, 300, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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40.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 200, 300, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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40.0f, displ, nullptr, &cropRect));
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this->drawClippedBitmap(canvas, 300, 300, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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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(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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-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 = SkImageSource::Make(fSmall);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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40.0f, std::move(displ), nullptr));
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this->drawClippedBitmap(canvas, 0, 400, paint);
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displ = SkImageSource::Make(fLarge);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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40.0f, std::move(displ), nullptr));
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this->drawClippedBitmap(canvas, 100, 400, paint);
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displ = SkImageSource::Make(fLargeW);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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40.0f, std::move(displ), nullptr));
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this->drawClippedBitmap(canvas, 200, 400, paint);
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displ = SkImageSource::Make(fLargeH);
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paint.setImageFilter(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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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(SkDisplacementMapEffect::Make(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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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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SkBitmap fBitmap;
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sk_sp<SkImage> fCheckerboard, fSmall, fLarge, fLargeW, fLargeH;
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new DisplacementMapGM;)
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}
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