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/*
* 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 blink {
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 blink
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