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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.h"
#include "SkDisplacementMapEffect.h"
#include "SkBitmapSource.h"
namespace skiagm {
class DisplacementMapGM : public GM {
public:
DisplacementMapGM() : fInitialized(false) {
this->setBGColor(0xFF000000);
}
protected:
virtual SkString onShortName() {
return SkString("displacement");
}
void make_bitmaps() {
make_bitmap();
make_checkerboard(&fCheckerboard, 80, 80);
make_checkerboard(&fSmall, 64, 64);
make_checkerboard(&fLarge, 96, 96);
make_checkerboard(&fLargeW, 96, 64);
make_checkerboard(&fLargeH, 64, 96);
}
void make_bitmap() {
fBitmap.allocN32Pixels(80, 80);
SkCanvas canvas(fBitmap);
canvas.clear(0x00000000);
SkPaint paint;
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
paint.setColor(0xFF884422);
paint.setTextSize(SkIntToScalar(96));
const char* str = "g";
canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(55), paint);
}
void make_checkerboard(SkBitmap* bitmap, int w, int h) {
bitmap->allocN32Pixels(w, h);
SkCanvas canvas(*bitmap);
canvas.clear(0x00000000);
SkPaint darkPaint;
darkPaint.setColor(0xFF804020);
SkPaint lightPaint;
lightPaint.setColor(0xFF244484);
for (int y = 0; y < h; y += 16) {
for (int x = 0; x < w; x += 16) {
canvas.save();
canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
canvas.restore();
}
}
}
virtual SkISize onISize() {
return SkISize::Make(500, 500);
}
void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) {
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();
}
virtual void onDraw(SkCanvas* canvas) {
if (!fInitialized) {
make_bitmaps();
fInitialized = true;
}
canvas->clear(0x00000000);
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, NULL, &cropRect))->unref();
drawClippedBitmap(canvas, 0, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kB_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
16.0f, displ, NULL, &cropRect))->unref();
drawClippedBitmap(canvas, 100, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType,
32.0f, displ, NULL, &cropRect))->unref();
drawClippedBitmap(canvas, 200, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kG_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
48.0f, displ, NULL, &cropRect))->unref();
drawClippedBitmap(canvas, 300, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
64.0f, displ, NULL, &cropRect))->unref();
drawClippedBitmap(canvas, 400, 200, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kG_ChannelSelectorType,
40.0f, displ, NULL, &cropRect))->unref();
drawClippedBitmap(canvas, 0, 300, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kB_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
40.0f, displ, NULL, &cropRect))->unref();
drawClippedBitmap(canvas, 100, 300, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType,
40.0f, displ, NULL, &cropRect))->unref();
drawClippedBitmap(canvas, 200, 300, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kG_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
40.0f, displ, NULL, &cropRect))->unref();
drawClippedBitmap(canvas, 300, 300, paint);
paint.setImageFilter(SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kA_ChannelSelectorType,
40.0f, displ, NULL, &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, NULL))->unref();
drawClippedBitmap(canvas, 400, 400, paint);
}
private:
typedef GM INHERITED;
SkBitmap fBitmap, fCheckerboard, fSmall, fLarge, fLargeW, fLargeH;
bool fInitialized;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new DisplacementMapGM; }
static GMRegistry reg(MyFactory);
}
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