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 "gm.h"
9 #include "SkColor.h"
10 #include "SkImageFilter.h"
11
draw(SkCanvas * canvas,const SkRect & rect,const SkBitmap & bitmap,const SkMatrix & matrix,SkFilterQuality filter)12 static void draw(SkCanvas* canvas, const SkRect& rect, const SkBitmap& bitmap,
13 const SkMatrix& matrix, SkFilterQuality filter) {
14 SkAutoTUnref<SkImageFilter> imageFilter(
15 SkImageFilter::CreateMatrixFilter(matrix, filter));
16 SkPaint paint;
17 paint.setImageFilter(imageFilter.get());
18 canvas->saveLayer(&rect, &paint);
19 canvas->drawBitmap(bitmap, 0, 0);
20 canvas->restore();
21 }
22
make_checkerboard(SkBitmap * bitmap)23 static void make_checkerboard(SkBitmap* bitmap) {
24 bitmap->allocN32Pixels(64, 64);
25 SkCanvas canvas(*bitmap);
26 SkPaint darkPaint;
27 darkPaint.setColor(sk_tool_utils::color_to_565(0xFF404040));
28 SkPaint lightPaint;
29 lightPaint.setColor(sk_tool_utils::color_to_565(0xFFA0A0A0));
30 for (int y = 0; y < 64; y += 32) {
31 for (int x = 0; x < 64; x += 32) {
32 canvas.save();
33 canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
34 canvas.drawRect(SkRect::MakeXYWH(0, 0, 16, 16), darkPaint);
35 canvas.drawRect(SkRect::MakeXYWH(16, 0, 16, 16), lightPaint);
36 canvas.drawRect(SkRect::MakeXYWH(0, 16, 16, 16), lightPaint);
37 canvas.drawRect(SkRect::MakeXYWH(16, 16, 16, 16), darkPaint);
38 canvas.restore();
39 }
40 }
41 }
42
43 DEF_SIMPLE_GM_BG(matriximagefilter, canvas, 420, 100, SK_ColorBLACK) {
44 SkMatrix matrix;
45 SkScalar margin = SkIntToScalar(10);
46 matrix.setSkew(SkDoubleToScalar(0.5), SkDoubleToScalar(0.2));
47 SkBitmap checkerboard;
48 make_checkerboard(&checkerboard);
49
50 SkRect srcRect = SkRect::MakeWH(96, 96);
51
52 canvas->translate(margin, margin);
53 draw(canvas, srcRect, checkerboard, matrix, kNone_SkFilterQuality);
54
55 canvas->translate(srcRect.width() + margin, 0);
56 draw(canvas, srcRect, checkerboard, matrix, kLow_SkFilterQuality);
57
58 #if 0
59 // This may be causing Mac 10.6 to barf.
60 canvas->translate(srcRect.width() + margin, 0);
61 draw(canvas, srcRect, checkerboard, matrix, kMedium_SkFilterQuality);
62
63 canvas->translate(srcRect.width() + margin, 0);
64 draw(canvas, srcRect, checkerboard, matrix, kHigh_SkFilterQuality);
65 #endif
66 }
67