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/*
* Copyright 2011 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 "Resources.h"
#include "SampleCode.h"
#include "SkCanvas.h"
#include "SkColorFilter.h"
#include "SkColorPriv.h"
#include "SkData.h"
#include "SkDecodingImageGenerator.h"
#include "SkDumpCanvas.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkOSFile.h"
#include "SkPath.h"
#include "SkPicture.h"
#include "SkPictureRecorder.h"
#include "SkRandom.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkStream.h"
#include "SkTime.h"
#include "SkTypeface.h"
#include "SkUtils.h"
#include "SkView.h"
#include "SkXMLParser.h"
#include "SkXfermode.h"
///////////////////////////////////////////////////////////////////////////////
static SkBitmap load_bitmap() {
SkBitmap bm;
SkString pngFilename = GetResourcePath("mandrill_512.png");
SkAutoDataUnref data(SkData::NewFromFileName(pngFilename.c_str()));
if (data.get() != NULL) {
SkInstallDiscardablePixelRef(SkDecodingImageGenerator::Create(
data, SkDecodingImageGenerator::Options()), &bm);
}
return bm;
}
static void drawCircle(SkCanvas* canvas, int r, SkColor color) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(color);
canvas->drawCircle(SkIntToScalar(r), SkIntToScalar(r), SkIntToScalar(r),
paint);
}
class PictureView : public SampleView {
SkBitmap fBitmap;
public:
PictureView() {
fBitmap = load_bitmap();
SkPictureRecorder recorder;
recorder.beginRecording(100, 100, NULL, 0);
fSubPicture = recorder.endRecording();
SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
SkPaint paint;
paint.setAntiAlias(true);
canvas->drawBitmap(fBitmap, 0, 0, NULL);
drawCircle(canvas, 50, SK_ColorBLACK);
canvas->drawPicture(fSubPicture);
canvas->translate(SkIntToScalar(50), 0);
canvas->drawPicture(fSubPicture);
canvas->translate(0, SkIntToScalar(50));
canvas->drawPicture(fSubPicture);
canvas->translate(SkIntToScalar(-50), 0);
canvas->drawPicture(fSubPicture);
fPicture = recorder.endRecording();
// fPicture now has (4) references to fSubPicture. We can release our ref,
// and just unref fPicture in our destructor, and it will in turn take care of
// the other references to fSubPicture
fSubPicture->unref();
}
virtual ~PictureView() {
fPicture->unref();
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Picture");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawSomething(SkCanvas* canvas) {
SkPaint paint;
canvas->save();
canvas->scale(0.5f, 0.5f);
canvas->drawBitmap(fBitmap, 0, 0, NULL);
canvas->restore();
const char beforeStr[] = "before circle";
const char afterStr[] = "after circle";
paint.setAntiAlias(true);
paint.setColor(SK_ColorRED);
canvas->drawData(beforeStr, sizeof(beforeStr));
canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
SkIntToScalar(40), paint);
canvas->drawData(afterStr, sizeof(afterStr));
paint.setColor(SK_ColorBLACK);
paint.setTextSize(SkIntToScalar(40));
canvas->drawText("Picture", 7, SkIntToScalar(50), SkIntToScalar(62),
paint);
}
virtual void onDrawContent(SkCanvas* canvas) {
this->drawSomething(canvas);
SkPictureRecorder recorder;
this->drawSomething(recorder.beginRecording(100, 100, NULL, 0));
SkAutoTUnref<SkPicture> pict(recorder.endRecording());
canvas->save();
canvas->translate(SkIntToScalar(300), SkIntToScalar(50));
canvas->scale(-SK_Scalar1, -SK_Scalar1);
canvas->translate(-SkIntToScalar(100), -SkIntToScalar(50));
canvas->drawPicture(pict);
canvas->restore();
canvas->save();
canvas->translate(SkIntToScalar(200), SkIntToScalar(150));
canvas->scale(SK_Scalar1, -SK_Scalar1);
canvas->translate(0, -SkIntToScalar(50));
canvas->drawPicture(pict);
canvas->restore();
canvas->save();
canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
canvas->scale(-SK_Scalar1, SK_Scalar1);
canvas->translate(-SkIntToScalar(100), 0);
canvas->drawPicture(pict);
canvas->restore();
#ifdef SK_DEVELOPER
if (false) {
SkDebugfDumper dumper;
SkDumpCanvas dumpCanvas(&dumper);
dumpCanvas.drawPicture(pict);
}
#endif
// This used to re-record the sub-picture and redraw the parent
// A capability that is now forbidden!
SkRandom rand(SampleCode::GetAnimTime());
canvas->translate(SkIntToScalar(10), SkIntToScalar(250));
canvas->drawPicture(fPicture);
delayInval(500);
}
private:
#define INVAL_ALL_TYPE "inval-all"
void delayInval(SkMSec delay) {
(new SkEvent(INVAL_ALL_TYPE, this->getSinkID()))->postDelay(delay);
}
virtual bool onEvent(const SkEvent& evt) {
if (evt.isType(INVAL_ALL_TYPE)) {
this->inval(NULL);
return true;
}
return this->INHERITED::onEvent(evt);
}
SkPicture* fPicture;
SkPicture* fSubPicture;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new PictureView; }
static SkViewRegister reg(MyFactory);
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