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