Home | History | Annotate | Download | only in gm 
      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 "SkMagnifierImageFilter.h"
     10 
     11 #define WIDTH 500
     12 #define HEIGHT 500
     13 
     14 namespace skiagm {
     15 
     16 class ImageMagnifierGM : public GM {
     17 public:
     18     ImageMagnifierGM() {
     19         this->setBGColor(0xFF000000);
     20     }
     21 
     22 protected:
     23     virtual uint32_t onGetFlags() const SK_OVERRIDE {
     24         // Skip tiled drawing until https://code.google.com/p/skia/issues/detail?id=781 is fixed.
     25         return this->INHERITED::onGetFlags() | GM::kSkipTiled_Flag;
     26     }
     27 
     28     virtual SkString onShortName() SK_OVERRIDE {
     29         return SkString("imagemagnifier");
     30     }
     31 
     32     virtual SkISize onISize() SK_OVERRIDE {
     33         return make_isize(WIDTH, HEIGHT);
     34     }
     35 
     36     virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
     37         SkPaint paint;
     38         paint.setImageFilter(
     39             new SkMagnifierImageFilter(
     40                 SkRect::MakeXYWH(SkIntToScalar(125), SkIntToScalar(125),
     41                                  SkIntToScalar(WIDTH / 2),
     42                                  SkIntToScalar(HEIGHT / 2)),
     43                 100))->unref();
     44         canvas->saveLayer(NULL, &paint);
     45         paint.setAntiAlias(true);
     46         const char* str = "The quick brown fox jumped over the lazy dog.";
     47         srand(1234);
     48         for (int i = 0; i < 25; ++i) {
     49             int x = rand() % WIDTH;
     50             int y = rand() % HEIGHT;
     51             paint.setColor(rand() % 0x1000000 | 0xFF000000);
     52             paint.setTextSize(SkIntToScalar(rand() % 300));
     53             canvas->drawText(str, strlen(str), SkIntToScalar(x),
     54                              SkIntToScalar(y), paint);
     55         }
     56         canvas->restore();
     57     }
     58 
     59 private:
     60     typedef GM INHERITED;
     61 };
     62 
     63 //////////////////////////////////////////////////////////////////////////////
     64 
     65 static GM* MyFactory(void*) { return new ImageMagnifierGM; }
     66 static GMRegistry reg(MyFactory);
     67 
     68 }
     69