| /* |
| * 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 "CoordinatedTile.h" |
| |
| #if USE(TILED_BACKING_STORE) |
| |
| #include "GraphicsContext.h" |
| #include "ImageBuffer.h" |
| #include "SurfaceUpdateInfo.h" |
| #include "TiledBackingStoreClient.h" |
| |
| using namespace WebCore; |
| |
| namespace WebKit { |
| |
| CoordinatedTile::CoordinatedTile(CoordinatedTileClient* client, TiledBackingStore* tiledBackingStore, const Coordinate& tileCoordinate) |
| : m_client(client) |
| , m_tiledBackingStore(tiledBackingStore) |
| , m_coordinate(tileCoordinate) |
| , m_rect(tiledBackingStore->tileRectForCoordinate(tileCoordinate)) |
| , m_ID(0) |
| , m_dirtyRect(m_rect) |
| { |
| } |
| |
| CoordinatedTile::~CoordinatedTile() |
| { |
| if (m_ID) |
| m_client->removeTile(m_ID); |
| } |
| |
| bool CoordinatedTile::isDirty() const |
| { |
| return !m_dirtyRect.isEmpty(); |
| } |
| |
| void CoordinatedTile::invalidate(const IntRect& dirtyRect) |
| { |
| IntRect tileDirtyRect = intersection(dirtyRect, m_rect); |
| if (tileDirtyRect.isEmpty()) |
| return; |
| |
| m_dirtyRect.unite(tileDirtyRect); |
| } |
| |
| Vector<IntRect> CoordinatedTile::updateBackBuffer() |
| { |
| if (!isDirty()) |
| return Vector<IntRect>(); |
| |
| SurfaceUpdateInfo updateInfo; |
| OwnPtr<GraphicsContext> graphicsContext = m_client->beginContentUpdate(m_dirtyRect.size(), updateInfo.atlasID, updateInfo.surfaceOffset); |
| if (!graphicsContext) |
| return Vector<IntRect>(); |
| graphicsContext->translate(-m_dirtyRect.x(), -m_dirtyRect.y()); |
| graphicsContext->scale(FloatSize(m_tiledBackingStore->contentsScale(), m_tiledBackingStore->contentsScale())); |
| m_tiledBackingStore->client()->tiledBackingStorePaint(graphicsContext.get(), m_tiledBackingStore->mapToContents(m_dirtyRect)); |
| |
| updateInfo.updateRect = m_dirtyRect; |
| updateInfo.updateRect.move(-m_rect.x(), -m_rect.y()); |
| updateInfo.scaleFactor = m_tiledBackingStore->contentsScale(); |
| graphicsContext.release(); |
| |
| static int id = 0; |
| if (!m_ID) { |
| m_ID = ++id; |
| m_client->createTile(m_ID, updateInfo, m_rect, m_tiledBackingStore->rect().size()); |
| } else |
| m_client->updateTile(m_ID, updateInfo, m_rect); |
| |
| m_dirtyRect = IntRect(); |
| return Vector<IntRect>(); |
| } |
| |
| void CoordinatedTile::swapBackBufferToFront() |
| { |
| // Handled by tiledBackingStorePaintEnd. |
| } |
| |
| bool CoordinatedTile::isReadyToPaint() const |
| { |
| return !!m_ID; |
| } |
| |
| void CoordinatedTile::paint(GraphicsContext*, const IntRect&) |
| { |
| ASSERT_NOT_REACHED(); |
| } |
| |
| void CoordinatedTile::resize(const IntSize& newSize) |
| { |
| m_rect = IntRect(m_rect.location(), newSize); |
| m_dirtyRect = m_rect; |
| } |
| |
| CoordinatedTileBackend::CoordinatedTileBackend(CoordinatedTileClient* client) |
| : m_client(client) |
| { |
| } |
| |
| PassRefPtr<WebCore::Tile> CoordinatedTileBackend::createTile(WebCore::TiledBackingStore* tiledBackingStore, const WebCore::Tile::Coordinate& tileCoordinate) |
| { |
| return CoordinatedTile::create(m_client, tiledBackingStore, tileCoordinate); |
| } |
| |
| void CoordinatedTileBackend::paintCheckerPattern(WebCore::GraphicsContext*, const WebCore::FloatRect&) |
| { |
| } |
| |
| } // namespace WebKit |
| |
| #endif // USE(TILED_BACKING_STORE) |