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      1 
      2 /*
      3  * Copyright 2011 Google Inc.
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 #include "gm.h"
      9 
     10 namespace skiagm {
     11 
     12 static const char* gConfigNames[] = {
     13     "unknown config",
     14     "A1",
     15     "A8",
     16     "Index8",
     17     "565",
     18     "4444",
     19     "8888"
     20 };
     21 
     22 SkBitmap::Config gConfigs[] = {
     23   SkBitmap::kRGB_565_Config,
     24   SkBitmap::kARGB_4444_Config,
     25   SkBitmap::kARGB_8888_Config,
     26 };
     27 
     28 #define NUM_CONFIGS (sizeof(gConfigs) / sizeof(SkBitmap::Config))
     29 
     30 static void draw_checks(SkCanvas* canvas, int width, int height) {
     31     SkPaint paint;
     32     paint.setColor(SK_ColorRED);
     33     canvas->drawRectCoords(SkIntToScalar(0), SkIntToScalar(0),
     34         SkIntToScalar(width / 2), SkIntToScalar(height / 2), paint);
     35     paint.setColor(SK_ColorGREEN);
     36     canvas->drawRectCoords(SkIntToScalar(width / 2), SkIntToScalar(0),
     37         SkIntToScalar(width), SkIntToScalar(height / 2), paint);
     38     paint.setColor(SK_ColorBLUE);
     39     canvas->drawRectCoords(SkIntToScalar(0), SkIntToScalar(height / 2),
     40         SkIntToScalar(width / 2), SkIntToScalar(height), paint);
     41     paint.setColor(SK_ColorYELLOW);
     42     canvas->drawRectCoords(SkIntToScalar(width / 2), SkIntToScalar(height / 2),
     43         SkIntToScalar(width), SkIntToScalar(height), paint);
     44 }
     45 
     46 class BitmapCopyGM : public GM {
     47 public:
     48     SkBitmap    fDst[NUM_CONFIGS];
     49 
     50     BitmapCopyGM() {
     51         this->setBGColor(0xFFDDDDDD);
     52     }
     53 
     54 protected:
     55     virtual SkString onShortName() {
     56         return SkString("bitmapcopy");
     57     }
     58 
     59     virtual SkISize onISize() {
     60         return make_isize(540, 330);
     61     }
     62 
     63     virtual void onDraw(SkCanvas* canvas) {
     64         SkPaint paint;
     65         SkScalar horizMargin(SkIntToScalar(10));
     66         SkScalar vertMargin(SkIntToScalar(10));
     67 
     68         draw_checks(canvas, 40, 40);
     69         SkBitmap src = canvas->getDevice()->accessBitmap(false);
     70 
     71         for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
     72             if (!src.deepCopyTo(&fDst[i], gConfigs[i])) {
     73                 src.copyTo(&fDst[i], gConfigs[i]);
     74             }
     75         }
     76 
     77         canvas->clear(0xFFDDDDDD);
     78         paint.setAntiAlias(true);
     79         SkScalar width = SkIntToScalar(40);
     80         SkScalar height = SkIntToScalar(40);
     81         if (paint.getFontSpacing() > height) {
     82             height = paint.getFontSpacing();
     83         }
     84         for (unsigned i = 0; i < NUM_CONFIGS; i++) {
     85             const char* name = gConfigNames[src.config()];
     86             SkScalar textWidth = paint.measureText(name, strlen(name));
     87             if (textWidth > width) {
     88                 width = textWidth;
     89             }
     90         }
     91         SkScalar horizOffset = width + horizMargin;
     92         SkScalar vertOffset = height + vertMargin;
     93         canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
     94 
     95         for (unsigned i = 0; i < NUM_CONFIGS; i++) {
     96             canvas->save();
     97             // Draw destination config name
     98             const char* name = gConfigNames[fDst[i].config()];
     99             SkScalar textWidth = paint.measureText(name, strlen(name));
    100             SkScalar x = (width - textWidth) / SkScalar(2);
    101             SkScalar y = paint.getFontSpacing() / SkScalar(2);
    102             canvas->drawText(name, strlen(name), x, y, paint);
    103 
    104             // Draw destination bitmap
    105             canvas->translate(0, vertOffset);
    106             x = (width - 40) / SkScalar(2);
    107             canvas->drawBitmap(fDst[i], x, 0, &paint);
    108             canvas->restore();
    109 
    110             canvas->translate(horizOffset, 0);
    111         }
    112     }
    113 
    114     virtual uint32_t onGetFlags() const { return kSkipPicture_Flag
    115                                                | kSkipPipe_Flag; }
    116 
    117 private:
    118     typedef GM INHERITED;
    119 };
    120 
    121 //////////////////////////////////////////////////////////////////////////////
    122 
    123 #ifndef SK_BUILD_FOR_ANDROID
    124 static GM* MyFactory(void*) { return new BitmapCopyGM; }
    125 static GMRegistry reg(MyFactory);
    126 #endif
    127 }
    128