/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkRegion.h"
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// This GM exercises the use case found in crbug.com/423834.
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// The following pattern:
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// save();
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// clipRect(rect, noAA);
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// drawRect(bigRect, noAA);
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// restore();
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//
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// drawRect(rect, noAA);
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// can leave 1 pixel wide remnants of the first rect.
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static void Draw(SkCanvas* canvas, const SkRect& rect) {
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SkPaint p;
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p.setAntiAlias(false);
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const SkRect bigRect = SkRect::MakeWH(600, 600);
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canvas->save();
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// draw a black rect through the clip
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canvas->save();
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canvas->clipRect(rect);
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canvas->drawRect(bigRect, p);
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canvas->restore();
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// now draw the white rect on top
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p.setColor(SK_ColorWHITE);
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canvas->drawRect(rect, p);
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canvas->restore();
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}
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DEF_SIMPLE_GM_BG(clipdrawdraw, canvas, 512, 512, 0xFFCCCCCC) {
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// Vertical remnant
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const SkRect rect1 = SkRect::MakeLTRB(136.5f, 137.5f, 338.5f, 293.5f);
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// Horizontal remnant
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// 179.488 rounds the right way (i.e., 179), 179.499 rounds the wrong way (i.e., 180)
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const SkRect rect2 = SkRect::MakeLTRB(207.5f, 179.499f, 530.5f, 429.5f);
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Draw(canvas, rect1);
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Draw(canvas, rect2);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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DEF_SIMPLE_GM(clip_region, canvas, 256, 256) {
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SkRegion rgn({ 10, 10, 100, 100 });
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canvas->save();
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canvas->clipRegion(rgn);
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canvas->drawColor(SK_ColorRED);
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canvas->restore();
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SkRect bounds = { 30, 30, 80, 80 };
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canvas->saveLayer(&bounds, nullptr);
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canvas->clipRegion(rgn);
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canvas->drawColor(SK_ColorBLUE);
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canvas->restore();
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}
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