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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 "SkPictureImageFilter.h"
#include "SkPictureRecorder.h"
// This GM exercises the SkPictureImageFilter ImageFilter class.
class PictureImageFilterGM : public skiagm::GM {
public:
PictureImageFilterGM() {
}
protected:
virtual SkString onShortName() SK_OVERRIDE {
return SkString("pictureimagefilter");
}
void makePicture() {
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
canvas->clear(0x00000000);
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(0xFFFFFFFF);
paint.setTextSize(SkIntToScalar(96));
const char* str = "e";
canvas->drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint);
fPicture.reset(recorder.endRecording());
}
virtual SkISize onISize() SK_OVERRIDE { return SkISize::Make(500, 150); }
virtual void onOnceBeforeDraw() SK_OVERRIDE {
this->makePicture();
}
static void fillRectFiltered(SkCanvas* canvas, const SkRect& clipRect, SkImageFilter* filter) {
SkPaint paint;
paint.setImageFilter(filter);
canvas->save();
canvas->clipRect(clipRect);
canvas->drawPaint(paint);
canvas->restore();
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
canvas->clear(0x00000000);
{
SkRect srcRect = SkRect::MakeXYWH(20, 20, 30, 30);
SkRect emptyRect = SkRect::MakeXYWH(20, 20, 0, 0);
SkRect bounds = SkRect::MakeXYWH(0, 0, 100, 100);
SkAutoTUnref<SkImageFilter> pictureSource(SkPictureImageFilter::Create(fPicture));
SkAutoTUnref<SkImageFilter> pictureSourceSrcRect(SkPictureImageFilter::Create(fPicture, srcRect));
SkAutoTUnref<SkImageFilter> pictureSourceEmptyRect(SkPictureImageFilter::Create(fPicture, emptyRect));
// Draw the picture unscaled.
fillRectFiltered(canvas, bounds, pictureSource);
canvas->translate(SkIntToScalar(100), 0);
// Draw an unscaled subset of the source picture.
fillRectFiltered(canvas, bounds, pictureSourceSrcRect);
canvas->translate(SkIntToScalar(100), 0);
// Draw the picture to an empty rect (should draw nothing).
fillRectFiltered(canvas, bounds, pictureSourceEmptyRect);
canvas->translate(SkIntToScalar(100), 0);
}
}
// SkPictureImageFilter doesn't support serialization yet.
virtual uint32_t onGetFlags() const SK_OVERRIDE {
return kSkipPicture_Flag |
kSkipPipe_Flag |
kSkipPipeCrossProcess_Flag |
kSkipTiled_Flag |
kSkipScaledReplay_Flag;
}
private:
SkAutoTUnref<SkPicture> fPicture;
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
DEF_GM( return new PictureImageFilterGM; )
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