| /* |
| * 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 "SkImageGenerator.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(data, &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(); |
| |
| paint.setAntiAlias(true); |
| |
| paint.setColor(SK_ColorRED); |
| canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50), |
| SkIntToScalar(40), paint); |
| 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); |