gm/factory.cpp

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