6de0bfc51a
git-svn-id: http://skia.googlecode.com/svn/trunk@3562 2bbb7eff-a529-9590-31e7-b0007b416f81
79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
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/*
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* Copyright 2011 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 "Test.h"
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#include "SkBitmap.h"
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#include "SkCanvas.h"
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static void test_nan_antihair(skiatest::Reporter* reporter) {
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SkBitmap bm;
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bm.setConfig(SkBitmap::kARGB_8888_Config, 20, 20);
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bm.allocPixels();
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SkCanvas canvas(bm);
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SkPath path;
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path.moveTo(0, 0);
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path.lineTo(10, SK_ScalarNaN);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setStyle(SkPaint::kStroke_Style);
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// before our fix to SkScan_Antihair.cpp to check for integral NaN (0x800...)
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// this would trigger an assert/crash.
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//
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// see rev. 3558
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canvas.drawPath(path, paint);
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}
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static bool check_for_all_zeros(const SkBitmap& bm) {
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SkAutoLockPixels alp(bm);
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size_t count = bm.width() * bm.bytesPerPixel();
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for (int y = 0; y < bm.height(); y++) {
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const uint8_t* ptr = reinterpret_cast<const uint8_t*>(bm.getAddr(0, y));
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for (size_t i = 0; i < count; i++) {
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if (ptr[i]) {
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return false;
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}
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}
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}
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return true;
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}
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static const int gWidth = 256;
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static const int gHeight = 256;
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static void create(SkBitmap* bm, SkBitmap::Config config, SkColor color) {
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bm->setConfig(config, gWidth, gHeight);
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bm->allocPixels();
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bm->eraseColor(color);
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}
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static void TestDrawBitmapRect(skiatest::Reporter* reporter) {
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SkBitmap src, dst;
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create(&src, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
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create(&dst, SkBitmap::kARGB_8888_Config, 0);
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SkCanvas canvas(dst);
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SkIRect srcR = { gWidth, 0, gWidth + 16, 16 };
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SkRect dstR = { 0, 0, SkIntToScalar(16), SkIntToScalar(16) };
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canvas.drawBitmapRect(src, &srcR, dstR, NULL);
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// ensure that we draw nothing if srcR does not intersect the bitmap
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REPORTER_ASSERT(reporter, check_for_all_zeros(dst));
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test_nan_antihair(reporter);
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}
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#include "TestClassDef.h"
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DEFINE_TESTCLASS("DrawBitmapRect", TestDrawBitmapRectClass, TestDrawBitmapRect)
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