michael@0: /* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "SurfaceFactory.h"
michael@0: 
michael@0: #include "SharedSurface.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace gfx {
michael@0: 
michael@0: SurfaceFactory::~SurfaceFactory()
michael@0: {
michael@0:     while (!mScraps.empty()) {
michael@0:         SharedSurface* cur = mScraps.front();
michael@0:         mScraps.pop();
michael@0: 
michael@0:         delete cur;
michael@0:     }
michael@0: }
michael@0: 
michael@0: SharedSurface*
michael@0: SurfaceFactory::NewSharedSurface(const gfx::IntSize& size)
michael@0: {
michael@0:     // Attempt to reuse an old surface.
michael@0:     while (!mScraps.empty()) {
michael@0:         SharedSurface* cur = mScraps.front();
michael@0:         mScraps.pop();
michael@0:         if (cur->Size() == size)
michael@0:             return cur;
michael@0: 
michael@0:         // Destroy old surfaces of the wrong size.
michael@0:         delete cur;
michael@0:     }
michael@0: 
michael@0:     SharedSurface* ret = CreateShared(size);
michael@0: 
michael@0:     return ret;
michael@0: }
michael@0: 
michael@0: // Auto-deletes surfs of the wrong type.
michael@0: void
michael@0: SurfaceFactory::Recycle(SharedSurface*& surf)
michael@0: {
michael@0:     if (!surf)
michael@0:         return;
michael@0: 
michael@0:     if (surf->Type() == mType) {
michael@0:         mScraps.push(surf);
michael@0:     } else {
michael@0:         delete surf;
michael@0:     }
michael@0: 
michael@0:     surf = nullptr;
michael@0: }
michael@0: 
michael@0: } /* namespace gfx */
michael@0: } /* namespace mozilla */