71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
/*
|
|
* 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/gm.h"
|
|
#include "include/core/SkCanvas.h"
|
|
#include "include/core/SkColor.h"
|
|
#include "include/core/SkPaint.h"
|
|
#include "include/core/SkRect.h"
|
|
#include "include/core/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, 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();
|
|
}
|