| /* |
| * Copyright (C) 2011 Google 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 GOOGLE 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 GOOGLE 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 "PageOverlayList.h" |
| |
| #include "PageOverlay.h" |
| #include "WebPageOverlay.h" |
| #include "WebViewImpl.h" |
| |
| namespace WebKit { |
| |
| PassOwnPtr<PageOverlayList> PageOverlayList::create(WebViewImpl* viewImpl) |
| { |
| return adoptPtr(new PageOverlayList(viewImpl)); |
| } |
| |
| PageOverlayList::PageOverlayList(WebViewImpl* viewImpl) |
| : m_viewImpl(viewImpl) |
| { |
| } |
| |
| PageOverlayList::~PageOverlayList() |
| { |
| } |
| |
| bool PageOverlayList::add(WebPageOverlay* overlay, int zOrder) |
| { |
| bool added = false; |
| size_t index = find(overlay); |
| if (index == WTF::kNotFound) { |
| OwnPtr<PageOverlay> pageOverlay = PageOverlay::create(m_viewImpl, overlay); |
| m_pageOverlays.append(pageOverlay.release()); |
| index = m_pageOverlays.size() - 1; |
| added = true; |
| } |
| |
| PageOverlay* pageOverlay = m_pageOverlays[index].get(); |
| pageOverlay->setZOrder(zOrder); |
| |
| // Adjust page overlay list order based on their z-order numbers. We first |
| // check if we need to move the overlay up and do so if needed. Otherwise, |
| // check if we need to move it down. |
| bool zOrderChanged = false; |
| for (size_t i = index; i + 1 < m_pageOverlays.size(); ++i) { |
| if (m_pageOverlays[i]->zOrder() >= m_pageOverlays[i + 1]->zOrder()) { |
| m_pageOverlays[i].swap(m_pageOverlays[i + 1]); |
| zOrderChanged = true; |
| } |
| } |
| |
| if (!zOrderChanged) { |
| for (size_t i = index; i >= 1; --i) { |
| if (m_pageOverlays[i]->zOrder() < m_pageOverlays[i - 1]->zOrder()) { |
| m_pageOverlays[i].swap(m_pageOverlays[i - 1]); |
| zOrderChanged = true; |
| } |
| } |
| } |
| |
| // If we did move the overlay, that means z-order is changed and we need to |
| // update overlay layers' z-order. Otherwise, just update current overlay. |
| if (zOrderChanged) { |
| for (size_t i = 0; i < m_pageOverlays.size(); ++i) |
| m_pageOverlays[i]->clear(); |
| update(); |
| } else |
| pageOverlay->update(); |
| |
| return added; |
| } |
| |
| bool PageOverlayList::remove(WebPageOverlay* overlay) |
| { |
| size_t index = find(overlay); |
| if (index == WTF::kNotFound) |
| return false; |
| |
| m_pageOverlays[index]->clear(); |
| m_pageOverlays.remove(index); |
| return true; |
| } |
| |
| void PageOverlayList::update() |
| { |
| for (size_t i = 0; i < m_pageOverlays.size(); ++i) |
| m_pageOverlays[i]->update(); |
| } |
| |
| void PageOverlayList::paintWebFrame(WebCore::GraphicsContext& gc) |
| { |
| for (size_t i = 0; i < m_pageOverlays.size(); ++i) |
| m_pageOverlays[i]->paintWebFrame(gc); |
| } |
| |
| size_t PageOverlayList::find(WebPageOverlay* overlay) |
| { |
| for (size_t i = 0; i < m_pageOverlays.size(); ++i) { |
| if (m_pageOverlays[i]->overlay() == overlay) |
| return i; |
| } |
| return WTF::kNotFound; |
| } |
| |
| size_t PageOverlayList::findGraphicsLayer(WebCore::GraphicsLayer* layer) |
| { |
| for (size_t i = 0; i < m_pageOverlays.size(); ++i) { |
| if (m_pageOverlays[i]->graphicsLayer() == layer) |
| return i; |
| } |
| return WTF::kNotFound; |
| } |
| |
| } // namespace WebKit |