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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 "SkBitmapSource.h"
#include "SkDisplacementMapEffect.h"
#include "gm.h"
#include "sk_tool_utils.h"
namespace skiagm {
class DisplacementMapGM : public GM {
public:
DisplacementMapGM() {
this->setBGColor(0xFF000000);
}
protected:
SkString onShortName() override {
return SkString("displacement");
}
void onOnceBeforeDraw() override {
fBitmap = sk_tool_utils::create_string_bitmap(80, 80, 0xFF884422, 15, 55, 96, "g");
SkColor c1 = sk_tool_utils::color_to_565(0xFF244484);
SkColor c2 = sk_tool_utils::color_to_565(0xFF804020);
fCheckerboard = sk_tool_utils::create_checkerboard_bitmap(80, 80, c1, c2, 8);
fSmall = sk_tool_utils::create_checkerboard_bitmap(64, 64, c1, c2, 8);
fLarge = sk_tool_utils::create_checkerboard_bitmap(96, 96, c1, c2, 8);
fLargeW = sk_tool_utils::create_checkerboard_bitmap(96, 64, c1, c2, 8);
fLargeH = sk_tool_utils::create_checkerboard_bitmap(64, 96, c1, c2, 8);
}
SkISize onISize() override {
return SkISize::Make(500, 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;
SkAutoTUnref<SkImageFilter> displ(SkBitmapSource::Create(fCheckerboard));
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kG_ChannelSelectorType, 0.0f, displ))->unref();
drawClippedBitmap(canvas, 0, 0, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kB_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType, 16.0f, displ))->unref();
drawClippedBitmap(canvas, 100, 0, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType, 32.0f, displ))->unref();
drawClippedBitmap(canvas, 200, 0, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kG_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType, 48.0f, displ))->unref();
drawClippedBitmap(canvas, 300, 0, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType, 64.0f, displ))->unref();
drawClippedBitmap(canvas, 400, 0, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kG_ChannelSelectorType, 40.0f, displ))->unref();
drawClippedBitmap(canvas, 0, 100, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kB_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ))->unref();
drawClippedBitmap(canvas, 100, 100, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType, 40.0f, displ))->unref();
drawClippedBitmap(canvas, 200, 100, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kG_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ))->unref();
drawClippedBitmap(canvas, 300, 100, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ))->unref();
drawClippedBitmap(canvas, 400, 100, paint);
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(30, 30, 40, 40));
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kG_ChannelSelectorType,
0.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 0, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kB_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
16.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 100, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType,
32.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 200, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kG_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
48.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 300, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
64.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 400, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kG_ChannelSelectorType,
40.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 0, 300, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kB_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
40.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 100, 300, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType,
40.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 200, 300, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kG_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
40.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 300, 300, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
40.0f, displ, nullptr, &cropRect))->unref();
drawClippedBitmap(canvas, 400, 300, paint);
// Tests for images of different sizes
displ.reset(SkBitmapSource::Create(fSmall));
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kG_ChannelSelectorType,
40.0f, displ))->unref();
drawClippedBitmap(canvas, 0, 400, paint);
displ.reset(SkBitmapSource::Create(fLarge));
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kB_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
40.0f, displ))->unref();
drawClippedBitmap(canvas, 100, 400, paint);
displ.reset(SkBitmapSource::Create(fLargeW));
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType,
40.0f, displ))->unref();
drawClippedBitmap(canvas, 200, 400, paint);
displ.reset(SkBitmapSource::Create(fLargeH));
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kG_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
40.0f, displ))->unref();
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::Create(
SkDisplacementMapEffect::kG_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
40.0f, nullptr))->unref();
drawClippedBitmap(canvas, 400, 400, paint);
}
private:
SkBitmap fBitmap, fCheckerboard, fSmall, fLarge, fLargeW, fLargeH;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new DisplacementMapGM;)
}
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