| /* |
| * Copyright (C) 2010 Apple Inc. All rights reserved. |
| * |
| * 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 "ChunkedUpdateDrawingArea.h" |
| |
| #include "DrawingAreaMessageKinds.h" |
| #include "DrawingAreaProxyMessageKinds.h" |
| #include "MessageID.h" |
| #include "UpdateChunk.h" |
| #include "WebCoreArgumentCoders.h" |
| #include "WebPage.h" |
| #include "WebProcess.h" |
| |
| using namespace WebCore; |
| |
| namespace WebKit { |
| |
| ChunkedUpdateDrawingArea::ChunkedUpdateDrawingArea(WebPage* webPage) |
| : DrawingArea(DrawingAreaTypeChunkedUpdate, webPage) |
| , m_isWaitingForUpdate(false) |
| , m_paintingIsSuspended(false) |
| , m_displayTimer(WebProcess::shared().runLoop(), this, &ChunkedUpdateDrawingArea::display) |
| { |
| } |
| |
| ChunkedUpdateDrawingArea::~ChunkedUpdateDrawingArea() |
| { |
| } |
| |
| void ChunkedUpdateDrawingArea::scroll(const IntRect& scrollRect, const IntSize& scrollOffset) |
| { |
| // FIXME: Do something much smarter. |
| setNeedsDisplay(scrollRect); |
| } |
| |
| void ChunkedUpdateDrawingArea::setNeedsDisplay(const IntRect& rect) |
| { |
| // FIXME: Collect a set of rects/region instead of just the union |
| // of all rects. |
| m_dirtyRect.unite(rect); |
| scheduleDisplay(); |
| } |
| |
| void ChunkedUpdateDrawingArea::display() |
| { |
| ASSERT(!m_isWaitingForUpdate); |
| |
| if (m_paintingIsSuspended) |
| return; |
| |
| if (m_dirtyRect.isEmpty()) |
| return; |
| |
| // Layout if necessary. |
| m_webPage->layoutIfNeeded(); |
| |
| IntRect dirtyRect = m_dirtyRect; |
| m_dirtyRect = IntRect(); |
| |
| // Create a new UpdateChunk and paint into it. |
| UpdateChunk updateChunk(dirtyRect); |
| paintIntoUpdateChunk(&updateChunk); |
| |
| WebProcess::shared().connection()->deprecatedSend(DrawingAreaProxyLegacyMessage::Update, m_webPage->pageID(), CoreIPC::In(updateChunk)); |
| |
| m_isWaitingForUpdate = true; |
| m_displayTimer.stop(); |
| } |
| |
| void ChunkedUpdateDrawingArea::forceRepaint() |
| { |
| m_isWaitingForUpdate = false; |
| display(); |
| } |
| |
| void ChunkedUpdateDrawingArea::scheduleDisplay() |
| { |
| if (m_paintingIsSuspended) |
| return; |
| |
| if (m_isWaitingForUpdate) |
| return; |
| |
| if (m_dirtyRect.isEmpty()) |
| return; |
| |
| if (m_displayTimer.isActive()) |
| return; |
| |
| m_displayTimer.startOneShot(0); |
| } |
| |
| void ChunkedUpdateDrawingArea::setSize(const IntSize& viewSize) |
| { |
| ASSERT_ARG(viewSize, !viewSize.isEmpty()); |
| |
| // We don't want to wait for an update until we display. |
| m_isWaitingForUpdate = false; |
| |
| m_webPage->setSize(viewSize); |
| m_webPage->layoutIfNeeded(); |
| |
| if (m_paintingIsSuspended) { |
| ASSERT(!m_displayTimer.isActive()); |
| |
| // Painting is suspended, just send back an empty update chunk. |
| WebProcess::shared().connection()->deprecatedSend(DrawingAreaProxyLegacyMessage::DidSetSize, m_webPage->pageID(), CoreIPC::In(UpdateChunk())); |
| return; |
| } |
| |
| // Create a new UpdateChunk and paint into it. |
| UpdateChunk updateChunk(IntRect(0, 0, viewSize.width(), viewSize.height())); |
| paintIntoUpdateChunk(&updateChunk); |
| |
| m_displayTimer.stop(); |
| |
| WebProcess::shared().connection()->deprecatedSend(DrawingAreaProxyLegacyMessage::DidSetSize, m_webPage->pageID(), CoreIPC::In(updateChunk)); |
| } |
| |
| void ChunkedUpdateDrawingArea::suspendPainting() |
| { |
| ASSERT(!m_paintingIsSuspended); |
| |
| m_paintingIsSuspended = true; |
| m_displayTimer.stop(); |
| } |
| |
| void ChunkedUpdateDrawingArea::deprecatedResumePainting(bool forceRepaint) |
| { |
| ASSERT(m_paintingIsSuspended); |
| |
| m_paintingIsSuspended = false; |
| |
| if (forceRepaint) { |
| // Just set the dirty rect to the entire page size. |
| m_dirtyRect = m_webPage->bounds(); |
| } |
| |
| // Schedule a display. |
| scheduleDisplay(); |
| } |
| |
| void ChunkedUpdateDrawingArea::didUpdate() |
| { |
| m_isWaitingForUpdate = false; |
| |
| // Display if needed. |
| display(); |
| } |
| |
| void ChunkedUpdateDrawingArea::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments) |
| { |
| switch (messageID.get<DrawingAreaLegacyMessage::Kind>()) { |
| case DrawingAreaLegacyMessage::SetSize: { |
| IntSize size; |
| if (!arguments->decode(CoreIPC::Out(size))) |
| return; |
| |
| setSize(size); |
| break; |
| } |
| |
| case DrawingAreaLegacyMessage::SuspendPainting: |
| suspendPainting(); |
| break; |
| |
| case DrawingAreaLegacyMessage::ResumePainting: { |
| bool forceRepaint; |
| if (!arguments->decode(CoreIPC::Out(forceRepaint))) |
| return; |
| |
| deprecatedResumePainting(forceRepaint); |
| break; |
| } |
| case DrawingAreaLegacyMessage::DidUpdate: |
| didUpdate(); |
| break; |
| |
| default: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| } |
| |
| } // namespace WebKit |