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      1 /*
      2  * Copyright 2012 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "gm.h"
      9 
     10 #include "Resources.h"
     11 #include "SkCanvas.h"
     12 #include "SkData.h"
     13 #include "SkDecodingImageGenerator.h"
     14 #include "SkDiscardableMemoryPool.h"
     15 #include "SkDiscardablePixelRef.h"
     16 #include "SkImageDecoder.h"
     17 #include "SkImageGeneratorPriv.h"
     18 #include "SkOSFile.h"
     19 #include "SkStream.h"
     20 
     21 namespace skiagm {
     22 
     23 /**
     24  *  Draw a PNG created by SkBitmapFactory.
     25  */
     26 class FactoryGM : public GM {
     27 public:
     28     FactoryGM() {}
     29 
     30 protected:
     31     virtual void onOnceBeforeDraw() SK_OVERRIDE {
     32         SkString resourcePath = GetResourcePath();
     33         // Copyright-free file from http://openclipart.org/detail/29213/paper-plane-by-ddoo
     34         SkString filename = SkOSPath::SkPathJoin(resourcePath.c_str(), "plane.png");
     35         SkAutoDataUnref data(SkData::NewFromFileName(filename.c_str()));
     36         if (NULL != data.get()) {
     37             // Create a cache which will boot the pixels out anytime the
     38             // bitmap is unlocked.
     39             SkAutoTUnref<SkDiscardableMemoryPool> pool(
     40                 SkDiscardableMemoryPool::Create(1));
     41             SkAssertResult(SkInstallDiscardablePixelRef(
     42                 SkDecodingImageGenerator::Create(
     43                     data, SkDecodingImageGenerator::Options()),
     44                 &fBitmap, pool));
     45         }
     46     }
     47 
     48     virtual SkString onShortName() {
     49         return SkString("factory");
     50     }
     51 
     52     virtual SkISize onISize() {
     53         return SkISize::Make(640, 480);
     54     }
     55 
     56     virtual void onDraw(SkCanvas* canvas) {
     57         canvas->drawBitmap(fBitmap, 0, 0);
     58     }
     59 
     60     // Skip cross process pipe due to https://code.google.com/p/skia/issues/detail?id=1520
     61     virtual uint32_t onGetFlags() const {
     62         return INHERITED::onGetFlags() | kSkipPipeCrossProcess_Flag;
     63     }
     64 
     65 private:
     66     SkBitmap fBitmap;
     67 
     68     typedef GM INHERITED;
     69 };
     70 
     71 //////////////////////////////////////////////////////////////////////////////
     72 
     73 static GM* MyFactory(void*) { return new FactoryGM; }
     74 static GMRegistry reg(MyFactory);
     75 
     76 }  // namespace skiagm
     77