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/*
* Copyright 2012 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 "SkBitmapFactory.h"
#include "SkCanvas.h"
#include "SkColor.h"
#include "SkData.h"
#include "SkImageEncoder.h"
#include "SkPaint.h"
#include "SkStream.h"
#include "SkTemplates.h"
#include "Test.h"
static SkBitmap* create_bitmap() {
SkBitmap* bm = SkNEW(SkBitmap);
const int W = 100, H = 100;
bm->setConfig(SkBitmap::kARGB_8888_Config, W, H);
bm->allocPixels();
bm->eraseColor(SK_ColorBLACK);
SkCanvas canvas(*bm);
SkPaint paint;
paint.setColor(SK_ColorBLUE);
canvas.drawRectCoords(0, 0, SkIntToScalar(W/2), SkIntToScalar(H/2), paint);
return bm;
}
static SkData* create_data_from_bitmap(const SkBitmap& bm) {
SkDynamicMemoryWStream stream;
if (SkImageEncoder::EncodeStream(&stream, bm, SkImageEncoder::kPNG_Type, 100)) {
return stream.copyToData();
}
return NULL;
}
static void assert_bounds_equal(skiatest::Reporter* reporter, const SkBitmap& bm1,
const SkBitmap& bm2) {
REPORTER_ASSERT(reporter, bm1.width() == bm2.width());
REPORTER_ASSERT(reporter, bm1.height() == bm2.height());
}
static void TestBitmapFactory(skiatest::Reporter* reporter) {
SkAutoTDelete<SkBitmap> bitmap(create_bitmap());
SkASSERT(bitmap.get() != NULL);
SkAutoDataUnref encodedBitmap(create_data_from_bitmap(*bitmap.get()));
if (encodedBitmap.get() == NULL) {
// Encoding failed.
return;
}
SkBitmap bitmapFromFactory;
bool success = SkBitmapFactory::DecodeBitmap(&bitmapFromFactory, encodedBitmap);
// This assumes that if the encoder worked, the decoder should also work, so the above call
// should not fail.
REPORTER_ASSERT(reporter, success);
assert_bounds_equal(reporter, *bitmap.get(), bitmapFromFactory);
REPORTER_ASSERT(reporter, bitmapFromFactory.pixelRef() != NULL);
// When only requesting that the bounds be decoded, the bounds should be set properly while
// the pixels should be empty.
SkBitmap boundedBitmap;
success = SkBitmapFactory::DecodeBitmap(&boundedBitmap, encodedBitmap,
SkBitmapFactory::kDecodeBoundsOnly_Constraint);
REPORTER_ASSERT(reporter, success);
assert_bounds_equal(reporter, *bitmap.get(), boundedBitmap);
REPORTER_ASSERT(reporter, boundedBitmap.pixelRef() == NULL);
}
#include "TestClassDef.h"
DEFINE_TESTCLASS("BitmapFactory", TestBitmapFactoryClass, TestBitmapFactory)
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