a560d00ba5
In SkLruImageCache, provide an option to keep all pixels, and document the new behavior. In gm/factory.cpp, set the budget for the Lru image cache to 1, to retain (basically) the old behavior. BUG=https://code.google.com/p/skia/issues/detail?id=1010 Review URL: https://codereview.chromium.org/12378075 git-svn-id: http://skia.googlecode.com/svn/trunk@7972 2bbb7eff-a529-9590-31e7-b0007b416f81
75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
/*
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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 "gm.h"
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#include "SkBitmapFactory.h"
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#include "SkCanvas.h"
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#include "SkData.h"
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#include "SkImageDecoder.h"
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#include "SkLruImageCache.h"
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#include "SkStream.h"
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namespace skiagm {
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/**
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* Draw a PNG created by SkBitmapFactory.
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*/
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class FactoryGM : public GM {
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public:
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FactoryGM() {}
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protected:
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virtual void onOnceBeforeDraw() SK_OVERRIDE {
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SkString filename(INHERITED::gResourcePath);
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if (!filename.endsWith("/") && !filename.endsWith("\\")) {
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filename.append("/");
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}
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// Copyright-free file from http://openclipart.org/detail/29213/paper-plane-by-ddoo
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filename.append("plane.png");
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SkFILEStream stream(filename.c_str());
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if (stream.isValid()) {
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stream.rewind();
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size_t length = stream.getLength();
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void* buffer = sk_malloc_throw(length);
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stream.read(buffer, length);
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SkAutoDataUnref data(SkData::NewFromMalloc(buffer, length));
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SkBitmapFactory factory(&SkImageDecoder::DecodeMemoryToTarget);
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// Create a cache which will boot the pixels out anytime the
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// bitmap is unlocked.
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SkAutoTUnref<SkLruImageCache> cache(SkNEW_ARGS(SkLruImageCache, (1)));
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factory.setImageCache(cache);
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factory.installPixelRef(data, &fBitmap);
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}
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}
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virtual SkString onShortName() {
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return SkString("factory");
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}
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virtual SkISize onISize() {
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return make_isize(640, 480);
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}
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virtual void onDraw(SkCanvas* canvas) {
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canvas->drawBitmap(fBitmap, 0, 0);
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}
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private:
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SkBitmap fBitmap;
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new FactoryGM; }
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static GMRegistry reg(MyFactory);
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}
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