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 "sk_tool_utils.h" 10 #include "SkRegion.h" 11 12 // This GM exercises the use case found in crbug.com/423834. 13 // The following pattern: 14 // save(); 15 // clipRect(rect, noAA); 16 // drawRect(bigRect, noAA); 17 // restore(); 18 // 19 // drawRect(rect, noAA); 20 // can leave 1 pixel wide remnants of the first rect. 21 static void Draw(SkCanvas* canvas, const SkRect& rect) { 22 SkPaint p; 23 p.setAntiAlias(false); 24 25 const SkRect bigRect = SkRect::MakeWH(600, 600); 26 27 canvas->save(); 28 // draw a black rect through the clip 29 canvas->save(); 30 canvas->clipRect(rect); 31 canvas->drawRect(bigRect, p); 32 canvas->restore(); 33 34 // now draw the white rect on top 35 p.setColor(SK_ColorWHITE); 36 canvas->drawRect(rect, p); 37 canvas->restore(); 38 } 39 40 DEF_SIMPLE_GM_BG(clipdrawdraw, canvas, 512, 512, 41 sk_tool_utils::color_to_565(0xFFCCCCCC)) { 42 // Vertical remnant 43 const SkRect rect1 = SkRect::MakeLTRB(136.5f, 137.5f, 338.5f, 293.5f); 44 45 // Horizontal remnant 46 // 179.488 rounds the right way (i.e., 179), 179.499 rounds the wrong way (i.e., 180) 47 const SkRect rect2 = SkRect::MakeLTRB(207.5f, 179.499f, 530.5f, 429.5f); 48 49 Draw(canvas, rect1); 50 Draw(canvas, rect2); 51 } 52 53 /////////////////////////////////////////////////////////////////////////////////////////////////// 54 55 DEF_SIMPLE_GM(clip_region, canvas, 256, 256) { 56 SkRegion rgn({ 10, 10, 100, 100 }); 57 58 canvas->save(); 59 canvas->clipRegion(rgn); 60 canvas->drawColor(SK_ColorRED); 61 canvas->restore(); 62 63 SkRect bounds = { 30, 30, 80, 80 }; 64 canvas->saveLayer(&bounds, nullptr); 65 canvas->clipRegion(rgn); 66 canvas->drawColor(SK_ColorBLUE); 67 canvas->restore(); 68 } 69
