| /* |
| * Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies) |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "Tile.h" |
| |
| #if USE(COORDINATED_GRAPHICS) |
| |
| #include "SurfaceUpdateInfo.h" |
| #include "TiledBackingStore.h" |
| #include "TiledBackingStoreClient.h" |
| |
| namespace WebCore { |
| |
| static const uint32_t InvalidTileID = 0; |
| |
| Tile::Tile(TiledBackingStore& tiledBackingStore, const Coordinate& tileCoordinate) |
| : m_tiledBackingStore(tiledBackingStore) |
| , m_ID(InvalidTileID) |
| , m_coordinate(tileCoordinate) |
| , m_rect(tiledBackingStore.tileRectForCoordinate(tileCoordinate)) |
| , m_dirtyRect(m_rect) |
| { |
| } |
| |
| Tile::~Tile() |
| { |
| if (m_ID != InvalidTileID) |
| m_tiledBackingStore.client().removeTile(m_ID); |
| } |
| |
| void Tile::ensureTileID() |
| { |
| static uint32_t id = 1; |
| if (m_ID == InvalidTileID) { |
| m_ID = id++; |
| // We may get an invalid ID due to wrap-around on overflow. |
| if (m_ID == InvalidTileID) |
| m_ID = id++; |
| m_tiledBackingStore.client().createTile(m_ID, m_tiledBackingStore.contentsScale()); |
| } |
| } |
| |
| bool Tile::isDirty() const |
| { |
| return !m_dirtyRect.isEmpty(); |
| } |
| |
| bool Tile::isReadyToPaint() const |
| { |
| return m_ID != InvalidTileID; |
| } |
| |
| void Tile::invalidate(const IntRect& dirtyRect) |
| { |
| IntRect tileDirtyRect = intersection(dirtyRect, m_rect); |
| if (!tileDirtyRect.isEmpty()) |
| m_dirtyRect.unite(tileDirtyRect); |
| } |
| |
| void Tile::markClean() |
| { |
| m_dirtyRect = { }; |
| } |
| |
| void Tile::resize(const IntSize& newSize) |
| { |
| m_rect = IntRect(m_rect.location(), newSize); |
| m_dirtyRect = m_rect; |
| } |
| |
| } // namespace WebCore |
| |
| #endif // USE(COORDINATED_GRAPHICS) |