src/third_party/skia/gm/copyTo4444.cpp

   1 /*
   2  * Copyright 2013 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 "SkImageDecoder.h"
  13 #include "SkOSFile.h"
  14
  15 namespace skiagm {
  16
  17 /**
  18  *  Test copying an image from 8888 to 4444.
  19  */
  20 class CopyTo4444GM : public GM {
  21 public:
  22     CopyTo4444GM() {}
  23
  24 protected:
  25     virtual SkString onShortName() {
  26         return SkString("copyTo4444");
  27     }
  28
  29     virtual SkISize onISize() {
  30         return SkISize::Make(1024, 512);
  31     }
  32
  33     virtual void onDraw(SkCanvas* canvas) {
  34         SkBitmap bm, bm4444;
  35         SkString pngFilename = GetResourcePath("mandrill_512.png");
  36         if (!SkImageDecoder::DecodeFile(pngFilename.c_str(), &bm, kN32_SkColorType,
  37                                         SkImageDecoder::kDecodePixels_Mode)) {
  38             SkDebugf("Could not decode the file. Did you forget to set the "
  39                      "resourcePath?\n");
  40             return;
  41         }
  42         canvas->drawBitmap(bm, 0, 0);
  43         SkAssertResult(bm.copyTo(&bm4444, kARGB_4444_SkColorType));
  44         canvas->drawBitmap(bm4444, SkIntToScalar(bm.width()), 0);
  45     }
  46
  47 private:
  48     typedef GM INHERITED;
  49 };
  50
  51 //////////////////////////////////////////////////////////////////////////////
  52
  53 static GM* MyFactory(void*) { return new CopyTo4444GM; }
  54 static GMRegistry reg(MyFactory);
  55
  56 }