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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
static void test_nan_antihair(skiatest::Reporter* reporter) {
SkBitmap bm;
bm.setConfig(SkBitmap::kARGB_8888_Config, 20, 20);
bm.allocPixels();
SkCanvas canvas(bm);
SkPath path;
path.moveTo(0, 0);
path.lineTo(10, SK_ScalarNaN);
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
// before our fix to SkScan_Antihair.cpp to check for integral NaN (0x800...)
// this would trigger an assert/crash.
//
// see rev. 3558
canvas.drawPath(path, paint);
}
static bool check_for_all_zeros(const SkBitmap& bm) {
SkAutoLockPixels alp(bm);
size_t count = bm.width() * bm.bytesPerPixel();
for (int y = 0; y < bm.height(); y++) {
const uint8_t* ptr = reinterpret_cast<const uint8_t*>(bm.getAddr(0, y));
for (size_t i = 0; i < count; i++) {
if (ptr[i]) {
return false;
}
}
}
return true;
}
static const int gWidth = 256;
static const int gHeight = 256;
static void create(SkBitmap* bm, SkBitmap::Config config, SkColor color) {
bm->setConfig(config, gWidth, gHeight);
bm->allocPixels();
bm->eraseColor(color);
}
static void TestDrawBitmapRect(skiatest::Reporter* reporter) {
SkBitmap src, dst;
create(&src, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
create(&dst, SkBitmap::kARGB_8888_Config, 0);
SkCanvas canvas(dst);
SkIRect srcR = { gWidth, 0, gWidth + 16, 16 };
SkRect dstR = { 0, 0, SkIntToScalar(16), SkIntToScalar(16) };
canvas.drawBitmapRect(src, &srcR, dstR, NULL);
// ensure that we draw nothing if srcR does not intersect the bitmap
REPORTER_ASSERT(reporter, check_for_all_zeros(dst));
test_nan_antihair(reporter);
}
#include "TestClassDef.h"
DEFINE_TESTCLASS("DrawBitmapRect", TestDrawBitmapRectClass, TestDrawBitmapRect)
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