158 lines
4.6 KiB
C++
158 lines
4.6 KiB
C++
#include "SampleCode.h"
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#include "SkView.h"
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#include "SkCanvas.h"
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#include "Sk64.h"
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#include "SkGradientShader.h"
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#include "SkGraphics.h"
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#include "SkImageDecoder.h"
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#include "SkKernel33MaskFilter.h"
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#include "SkPath.h"
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#include "SkPicture.h"
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#include "SkRandom.h"
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#include "SkRegion.h"
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#include "SkShader.h"
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#include "SkUtils.h"
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#include "SkColorPriv.h"
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#include "SkColorFilter.h"
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#include "SkTime.h"
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#include "SkTypeface.h"
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#include "SkXfermode.h"
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#include "SkStream.h"
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#include "SkXMLParser.h"
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static void drawCircle(SkCanvas* canvas, int r, SkColor color) {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(color);
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canvas->drawCircle(SkIntToScalar(r), SkIntToScalar(r), SkIntToScalar(r),
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paint);
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}
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class PictureView : public SkView {
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public:
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PictureView() {
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fPicture = new SkPicture;
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SkCanvas* canvas = fPicture->beginRecording(100, 100);
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SkPaint paint;
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paint.setAntiAlias(true);
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drawCircle(canvas, 50, SK_ColorBLACK);
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fSubPicture = new SkPicture;
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canvas->drawPicture(*fSubPicture);
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canvas->translate(SkIntToScalar(50), 0);
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canvas->drawPicture(*fSubPicture);
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canvas->translate(0, SkIntToScalar(50));
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canvas->drawPicture(*fSubPicture);
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canvas->translate(SkIntToScalar(-50), 0);
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canvas->drawPicture(*fSubPicture);
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// fPicture now has (4) references to us. We can release ours, and just
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// unref fPicture in our destructor, and it will in turn take care of
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// the other references to fSubPicture
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fSubPicture->unref();
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}
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virtual ~PictureView() {
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fPicture->unref();
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "Picture");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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void drawBG(SkCanvas* canvas) {
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// canvas->drawColor(0xFFDDDDDD);
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canvas->drawColor(SK_ColorWHITE);
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// canvas->drawColor(SK_ColorBLACK);
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}
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void drawSomething(SkCanvas* canvas) {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(SK_ColorRED);
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canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
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SkIntToScalar(40), paint);
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paint.setColor(SK_ColorBLACK);
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paint.setTextSize(SkIntToScalar(40));
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canvas->drawText("Picture", 7, SkIntToScalar(50), SkIntToScalar(62),
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paint);
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}
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virtual void onDraw(SkCanvas* canvas) {
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this->drawBG(canvas);
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drawSomething(canvas);
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SkPicture* pict = new SkPicture;
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SkAutoUnref aur(pict);
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drawSomething(pict->beginRecording(100, 100));
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pict->endRecording();
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canvas->save();
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canvas->translate(SkIntToScalar(300), SkIntToScalar(50));
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canvas->scale(-SK_Scalar1, -SK_Scalar1);
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canvas->translate(-SkIntToScalar(100), -SkIntToScalar(50));
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canvas->drawPicture(*pict);
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canvas->restore();
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canvas->save();
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canvas->translate(SkIntToScalar(200), SkIntToScalar(150));
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canvas->scale(SK_Scalar1, -SK_Scalar1);
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canvas->translate(0, -SkIntToScalar(50));
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canvas->drawPicture(*pict);
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canvas->restore();
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canvas->save();
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canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
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canvas->scale(-SK_Scalar1, SK_Scalar1);
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canvas->translate(-SkIntToScalar(100), 0);
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canvas->drawPicture(*pict);
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canvas->restore();
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// test that we can re-record a subpicture, and see the results
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canvas->translate(SkIntToScalar(10), SkIntToScalar(250));
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drawCircle(fSubPicture->beginRecording(50, 50), 25,
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fRand.nextU() | 0xFF000000);
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canvas->drawPicture(*fPicture);
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delayInval(500);
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}
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private:
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#define INVAL_ALL_TYPE "inval-all"
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void delayInval(SkMSec delay) {
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(new SkEvent(INVAL_ALL_TYPE))->post(this->getSinkID(), delay);
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}
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virtual bool onEvent(const SkEvent& evt) {
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if (evt.isType(INVAL_ALL_TYPE)) {
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this->inval(NULL);
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return true;
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}
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return this->INHERITED::onEvent(evt);
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}
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SkPicture* fPicture;
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SkPicture* fSubPicture;
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SkRandom fRand;
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typedef SkView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new PictureView; }
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static SkViewRegister reg(MyFactory);
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