1 /*
2 * Copyright 2016 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/gm.h"
9 #include "include/core/SkBitmap.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkColor.h"
12 #include "include/core/SkMatrix.h"
13 #include "include/core/SkPaint.h"
14 #include "include/core/SkRect.h"
15 #include "include/core/SkShader.h"
16 #include "include/core/SkString.h"
17 #include "include/core/SkTileMode.h"
18 #include "tools/Resources.h"
19
DEF_SIMPLE_GM_CAN_FAIL(bitmap_subset_shader, canvas, errorMsg, 256, 256)20 DEF_SIMPLE_GM_CAN_FAIL(bitmap_subset_shader, canvas, errorMsg, 256, 256) {
21 canvas->clear(SK_ColorWHITE);
22
23 SkBitmap source;
24 if (!GetResourceAsBitmap("images/color_wheel.png", &source)) {
25 *errorMsg = "Could not load images/color_wheel.png. "
26 "Did you forget to set the resourcePath?";
27 return skiagm::DrawResult::kFail;
28 }
29 SkIRect left = SkIRect::MakeWH(source.width()/2, source.height());
30 SkIRect right = SkIRect::MakeXYWH(source.width()/2, 0,
31 source.width()/2, source.height());
32 SkBitmap leftBitmap, rightBitmap;
33 source.extractSubset(&leftBitmap, left);
34 source.extractSubset(&rightBitmap, right);
35
36 SkMatrix matrix;
37 matrix.setScale(0.75f, 0.75f);
38 matrix.preRotate(30.0f);
39 SkTileMode tm = SkTileMode::kRepeat;
40 SkPaint paint;
41 paint.setShader(leftBitmap.makeShader(tm, tm, SkSamplingOptions(), matrix));
42 canvas->drawRect(SkRect::MakeWH(256.0f, 128.0f), paint);
43 paint.setShader(rightBitmap.makeShader(tm, tm, SkSamplingOptions(), matrix));
44 canvas->drawRect(SkRect::MakeXYWH(0, 128.0f, 256.0f, 128.0f), paint);
45 return skiagm::DrawResult::kOk;
46 }
47
