| /* |
| Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies) |
| Copyright (C) 2012 Company 100, Inc. |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public License |
| along with this library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "UpdateAtlas.h" |
| |
| #if USE(COORDINATED_GRAPHICS) |
| |
| #include "CoordinatedGraphicsState.h" |
| #include "IntRect.h" |
| |
| namespace WebCore { |
| |
| UpdateAtlas::UpdateAtlas(Client& client, const IntSize& size, Nicosia::Buffer::Flags flags) |
| : m_client(client) |
| , m_buffer(Nicosia::Buffer::create(size, flags)) |
| { |
| static ID s_nextID { 0 }; |
| m_id = ++s_nextID; |
| |
| m_client.createUpdateAtlas(m_id, m_buffer.copyRef()); |
| } |
| |
| UpdateAtlas::~UpdateAtlas() |
| { |
| m_client.removeUpdateAtlas(m_id); |
| } |
| |
| void UpdateAtlas::buildLayoutIfNeeded() |
| { |
| if (m_areaAllocator) |
| return; |
| m_areaAllocator = std::make_unique<GeneralAreaAllocator>(size()); |
| m_areaAllocator->setMinimumAllocation(IntSize(32, 32)); |
| } |
| |
| void UpdateAtlas::didSwapBuffers() |
| { |
| m_areaAllocator = nullptr; |
| } |
| |
| RefPtr<Nicosia::Buffer> UpdateAtlas::getCoordinatedBuffer(const IntSize& size, uint32_t& atlasID, IntRect& allocatedRect) |
| { |
| m_inactivityInSeconds = 0; |
| buildLayoutIfNeeded(); |
| allocatedRect = m_areaAllocator->allocate(size); |
| |
| if (allocatedRect.isEmpty()) |
| return nullptr; |
| |
| atlasID = m_id; |
| return m_buffer.copyRef(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // USE(COORDINATED_GRAPHICS) |