halcanary | 30b83d4 | 2014-10-26 05:23:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 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 "Resources.h" |
| 9 | #include "SkData.h" |
| 10 | #include "SkDecodingImageGenerator.h" |
| 11 | #include "gm.h" |
| 12 | |
| 13 | static void checkerboard( |
| 14 | SkCanvas* canvas, int w, int h, int size, SkColor c1, SkColor c2) { |
| 15 | SkAutoCanvasRestore autoCanvasRestore(canvas, true); |
| 16 | canvas->clipRect(SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h))); |
| 17 | canvas->drawColor(c1); |
| 18 | SkPaint paint; |
| 19 | paint.setColor(c2); |
| 20 | SkScalar s = SkIntToScalar(size); |
| 21 | for (int y = 0; y < h; y += size) { |
| 22 | SkScalar ty = SkIntToScalar(y); |
| 23 | bool oddRow = (y % (2 * size)) != 0; |
| 24 | for (int x = oddRow ? size : 0; x < w; x += (2 * size)) { |
| 25 | SkScalar tx = SkIntToScalar(x); |
| 26 | canvas->drawRect(SkRect::MakeXYWH(tx, ty, s, s), paint); |
| 27 | } |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | static void draw_bitmap(SkCanvas* canvas, const char* resource, int x, int y) { |
| 32 | SkBitmap bitmap; |
| 33 | if (GetResourceAsBitmap(resource, &bitmap)) { |
| 34 | canvas->drawBitmap(bitmap, SkIntToScalar(x), SkIntToScalar(y)); |
| 35 | } else { |
| 36 | SkDebugf("\nCould not decode file '%s'. Did you forget" |
| 37 | " to set the resourcePath?\n", resource); |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | /* |
| 42 | This GM tests whether the image decoders properly decode each color |
| 43 | channel. Four copies of the same image should appear in the GM, and |
| 44 | the letter R should be red, B should be blue, G green, C cyan, M |
| 45 | magenta, Y yellow, and K black. In all but the JPEG version of the |
| 46 | image, the letters should be on a white disc on a transparent |
| 47 | background (rendered as a checkerboard). The JPEG image has a grey |
| 48 | background and compression artifacts. |
| 49 | */ |
| 50 | DEF_SIMPLE_GM(colorwheel, canvas, 256, 256) { |
| 51 | canvas->clear(SK_ColorWHITE); |
| 52 | checkerboard(canvas, 256, 556, 8, 0xFF999999, 0xFF666666); |
| 53 | draw_bitmap(canvas, "color_wheel.png", 0, 0); // top left |
| 54 | draw_bitmap(canvas, "color_wheel.gif", 128, 0); // top right |
| 55 | draw_bitmap(canvas, "color_wheel.webp", 0, 128); // bottom left |
| 56 | draw_bitmap(canvas, "color_wheel.jpg", 128, 128); // bottom right |
| 57 | } |