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
10 // This GM exercises the use case found in crbug.com/423834.
11 // The following pattern:
12 // save();
13 // clipRect(rect, noAA);
14 // drawRect(bigRect, noAA);
15 // restore();
16 //
17 // drawRect(rect, noAA);
18 // can leave 1 pixel wide remnants of the first rect.
Draw(SkCanvas * canvas,const SkRect & rect)19 static void Draw(SkCanvas* canvas, const SkRect& rect) {
20 SkPaint p;
21 p.setAntiAlias(false);
22
23 const SkRect bigRect = SkRect::MakeWH(600, 600);
24
25 canvas->save();
26 // draw a black rect through the clip
27 canvas->save();
28 canvas->clipRect(rect);
29 canvas->drawRect(bigRect, p);
30 canvas->restore();
31
32 // now draw the white rect on top
33 p.setColor(SK_ColorWHITE);
34 canvas->drawRect(rect, p);
35 canvas->restore();
36 }
37
38 DEF_SIMPLE_GM_BG(clipdrawdraw, canvas, 512, 512,
39 sk_tool_utils::color_to_565(0xFFCCCCCC)) {
40 // Vertical remnant
41 const SkRect rect1 = SkRect::MakeLTRB(136.5f, 137.5f, 338.5f, 293.5f);
42
43 // Horizontal remnant
44 // 179.488 rounds the right way (i.e., 179), 179.499 rounds the wrong way (i.e., 180)
45 const SkRect rect2 = SkRect::MakeLTRB(207.5f, 179.499f, 530.5f, 429.5f);
46
47 Draw(canvas, rect1);
48 Draw(canvas, rect2);
49 }
50