skia2/samplecode/SampleMovie.cpp

/*
 * 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 "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkMovie.h"
#include "SkTime.h"
#include <new>

class AnimGifView : public SkView {
    SkMovie*    fMovie;
public:
    AnimGifView() {
        fMovie = SkMovie::DecodeFile("/skimages/dollarblk.gif");
    }

    virtual ~AnimGifView() {
        SkSafeUnref(fMovie);
    }

protected:
    // overrides from SkEventSink
    virtual bool onQuery(SkEvent* evt) {
        if (SampleCode::TitleQ(*evt)) {
            SampleCode::TitleR(evt, "Animated Gif");
            return true;
        }
        return this->INHERITED::onQuery(evt);
    }

    void drawBG(SkCanvas* canvas) {
        canvas->drawColor(0xFFDDDDDD);
    }

    virtual void onDraw(SkCanvas* canvas) {
        this->drawBG(canvas);

        if (fMovie) {
            if (fMovie->duration()) {
                fMovie->setTime(SkTime::GetMSecs() % fMovie->duration());
            } else {
                fMovie->setTime(0);
            }
            canvas->drawBitmap(fMovie->bitmap(), SkIntToScalar(20),
                               SkIntToScalar(20));
            this->inval(NULL);
        }
    }

private:
    SkPath      fPath;

    typedef SkView INHERITED;
};

//////////////////////////////////////////////////////////////////////////////

static SkView* MyFactory() { return new AnimGifView; }
static SkViewRegister reg(MyFactory);