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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkRegion.h"
// This GM exercises the use case found in crbug.com/423834.
// The following pattern:
// save();
// clipRect(rect, noAA);
// drawRect(bigRect, noAA);
// restore();
//
// drawRect(rect, noAA);
// can leave 1 pixel wide remnants of the first rect.
static void Draw(SkCanvas* canvas, const SkRect& rect) {
SkPaint p;
p.setAntiAlias(false);
const SkRect bigRect = SkRect::MakeWH(600, 600);
canvas->save();
// draw a black rect through the clip
canvas->save();
canvas->clipRect(rect);
canvas->drawRect(bigRect, p);
canvas->restore();
// now draw the white rect on top
p.setColor(SK_ColorWHITE);
canvas->drawRect(rect, p);
canvas->restore();
}
DEF_SIMPLE_GM_BG(clipdrawdraw, canvas, 512, 512,
sk_tool_utils::color_to_565(0xFFCCCCCC)) {
// Vertical remnant
const SkRect rect1 = SkRect::MakeLTRB(136.5f, 137.5f, 338.5f, 293.5f);
// Horizontal remnant
// 179.488 rounds the right way (i.e., 179), 179.499 rounds the wrong way (i.e., 180)
const SkRect rect2 = SkRect::MakeLTRB(207.5f, 179.499f, 530.5f, 429.5f);
Draw(canvas, rect1);
Draw(canvas, rect2);
}
///////////////////////////////////////////////////////////////////////////////////////////////////
DEF_SIMPLE_GM(clip_region, canvas, 256, 256) {
SkRegion rgn({ 10, 10, 100, 100 });
canvas->save();
canvas->clipRegion(rgn);
canvas->drawColor(SK_ColorRED);
canvas->restore();
SkRect bounds = { 30, 30, 80, 80 };
canvas->saveLayer(&bounds, nullptr);
canvas->clipRegion(rgn);
canvas->drawColor(SK_ColorBLUE);
canvas->restore();
}
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