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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkRect.h"
#include "Test.h"
static bool has_green_pixels(const SkBitmap& bm) {
for (int j = 0; j < bm.height(); ++j) {
for (int i = 0; i < bm.width(); ++i) {
if (SkColorGetG(bm.getColor(i, j))) {
return true;
}
}
}
return false;
}
static void test_stroke_width_clipping(skiatest::Reporter* reporter) {
SkBitmap bm;
bm.allocN32Pixels(100, 10);
bm.eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(bm);
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(10);
paint.setColor(0xff00ff00);
// clip out the left half of our canvas
canvas.clipRect(SkRect::MakeXYWH(51, 0, 49, 100));
// no stroke bleed should be visible
canvas.drawRect(SkRect::MakeWH(44, 100), paint);
REPORTER_ASSERT(reporter, !has_green_pixels(bm));
// right stroke edge should bleed into the visible area
canvas.scale(2, 2);
canvas.drawRect(SkRect::MakeWH(22, 50), paint);
REPORTER_ASSERT(reporter, has_green_pixels(bm));
}
static void test_skbug4406(skiatest::Reporter* reporter) {
SkBitmap bm;
bm.allocN32Pixels(10, 10);
bm.eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(bm);
const SkRect r = { 1.5f, 1, 3.5f, 3 };
// draw filled green rect first
SkPaint paint;
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(0xff00ff00);
paint.setStrokeWidth(1);
paint.setAntiAlias(true);
canvas.drawRect(r, paint);
// paint black with stroke rect (that asserts in bug 4406)
// over the filled rect, it should cover it
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(0xff000000);
paint.setStrokeWidth(1);
canvas.drawRect(r, paint);
REPORTER_ASSERT(reporter, !has_green_pixels(bm));
// do it again with thinner stroke
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(0xff00ff00);
paint.setStrokeWidth(1);
paint.setAntiAlias(true);
canvas.drawRect(r, paint);
// paint black with stroke rect (that asserts in bug 4406)
// over the filled rect, it doesnt cover it completelly with thinner stroke
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(0xff000000);
paint.setStrokeWidth(0.99f);
canvas.drawRect(r, paint);
REPORTER_ASSERT(reporter, has_green_pixels(bm));
}
DEF_TEST(Rect, reporter) {
test_stroke_width_clipping(reporter);
test_skbug4406(reporter);
}
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