gm/encode.cpp

   1 /*
   2  * Copyright 2011 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 #include "gm.h"
   8 #include "sk_tool_utils.h"
   9 #include "SkCanvas.h"
  10 #include "SkData.h"
  11 #include "SkImage.h"
  12 #include "SkImageEncoder.h"
  13 #include "Resources.h"
  14
  15 namespace skiagm {
  16
  17 class EncodeGM : public GM {
  18 public:
  19     EncodeGM() {}
  20
  21 protected:
  22     SkString onShortName() override {
  23         return SkString("encode");
  24     }
  25
  26     SkISize onISize() override {
  27         return SkISize::Make(1024, 600);
  28     }
  29
  30     void onDraw(SkCanvas* canvas) override {
  31         SkBitmap orig;
  32         GetResourceAsBitmap("mandrill_512_q075.jpg", &orig);
  33         sk_sp<SkData> pngData(sk_tool_utils::EncodeImageToData(orig, SkEncodedImageFormat::kPNG, 100));
  34         sk_sp<SkData> jpegData(sk_tool_utils::EncodeImageToData(orig, SkEncodedImageFormat::kJPEG, 100));
  35
  36         sk_sp<SkImage> pngImage = SkImage::MakeFromEncoded(pngData);
  37         sk_sp<SkImage> jpegImage = SkImage::MakeFromEncoded(jpegData);
  38         canvas->drawImage(pngImage.get(), 0.0f, 0.0f);
  39         canvas->drawImage(jpegImage.get(), 512.0f, 0.0f);
  40
  41         const char text[] = "Images should look identical.";
  42         canvas->drawText(text, sizeof(text) - 1, 450.0f, 550.0f, SkPaint());
  43     }
  44
  45 private:
  46     typedef GM INHERITED;
  47 };
  48
  49 DEF_GM( return new EncodeGM; )
  50 }