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      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 resourcePath = GetResourcePath();
     36         SkString filename = SkOSPath::SkPathJoin(resourcePath.c_str(), "mandrill_512.png");
     37         if (!SkImageDecoder::DecodeFile(filename.c_str(), &bm, kN32_SkColorType,
     38                                         SkImageDecoder::kDecodePixels_Mode)) {
     39             SkDebugf("Could not decode the file. Did you forget to set the "
     40                      "resourcePath?\n");
     41             return;
     42         }
     43         canvas->drawBitmap(bm, 0, 0);
     44         SkAssertResult(bm.copyTo(&bm4444, kARGB_4444_SkColorType));
     45         canvas->drawBitmap(bm4444, SkIntToScalar(bm.width()), 0);
     46     }
     47 
     48 private:
     49     typedef GM INHERITED;
     50 };
     51 
     52 //////////////////////////////////////////////////////////////////////////////
     53 
     54 static GM* MyFactory(void*) { return new CopyTo4444GM; }
     55 static GMRegistry reg(MyFactory);
     56 
     57 }
     58