Torne (Richard Coles) | 5c87bf8 | 2012-11-14 11:46:17 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 Google Inc. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are |
| 6 | * met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * |
| 11 | * 2. Redistributions in binary form must reproduce the above |
| 12 | * copyright notice, this list of conditions and the following disclaimer |
| 13 | * in the documentation and/or other materials provided with the |
| 14 | * distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. AND ITS CONTRIBUTORS |
| 17 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. |
| 20 | * OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include "config.h" |
| 30 | #include "PageOverlayList.h" |
| 31 | |
| 32 | #include "PageOverlay.h" |
| 33 | #include "WebPageOverlay.h" |
| 34 | #include "WebViewImpl.h" |
| 35 | |
Torne (Richard Coles) | 51b2906 | 2013-11-28 11:56:03 +0000 | [diff] [blame] | 36 | namespace blink { |
Torne (Richard Coles) | 5c87bf8 | 2012-11-14 11:46:17 +0000 | [diff] [blame] | 37 | |
| 38 | PassOwnPtr<PageOverlayList> PageOverlayList::create(WebViewImpl* viewImpl) |
| 39 | { |
| 40 | return adoptPtr(new PageOverlayList(viewImpl)); |
| 41 | } |
| 42 | |
| 43 | PageOverlayList::PageOverlayList(WebViewImpl* viewImpl) |
| 44 | : m_viewImpl(viewImpl) |
| 45 | { |
| 46 | } |
| 47 | |
| 48 | PageOverlayList::~PageOverlayList() |
| 49 | { |
| 50 | } |
| 51 | |
| 52 | bool PageOverlayList::add(WebPageOverlay* overlay, int zOrder) |
| 53 | { |
| 54 | bool added = false; |
| 55 | size_t index = find(overlay); |
Torne (Richard Coles) | 06f816c | 2013-09-26 13:25:12 +0100 | [diff] [blame] | 56 | if (index == WTF::kNotFound) { |
Torne (Richard Coles) | 5c87bf8 | 2012-11-14 11:46:17 +0000 | [diff] [blame] | 57 | OwnPtr<PageOverlay> pageOverlay = PageOverlay::create(m_viewImpl, overlay); |
| 58 | m_pageOverlays.append(pageOverlay.release()); |
| 59 | index = m_pageOverlays.size() - 1; |
| 60 | added = true; |
| 61 | } |
| 62 | |
| 63 | PageOverlay* pageOverlay = m_pageOverlays[index].get(); |
| 64 | pageOverlay->setZOrder(zOrder); |
| 65 | |
| 66 | // Adjust page overlay list order based on their z-order numbers. We first |
| 67 | // check if we need to move the overlay up and do so if needed. Otherwise, |
| 68 | // check if we need to move it down. |
| 69 | bool zOrderChanged = false; |
| 70 | for (size_t i = index; i + 1 < m_pageOverlays.size(); ++i) { |
| 71 | if (m_pageOverlays[i]->zOrder() >= m_pageOverlays[i + 1]->zOrder()) { |
| 72 | m_pageOverlays[i].swap(m_pageOverlays[i + 1]); |
| 73 | zOrderChanged = true; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | if (!zOrderChanged) { |
| 78 | for (size_t i = index; i >= 1; --i) { |
| 79 | if (m_pageOverlays[i]->zOrder() < m_pageOverlays[i - 1]->zOrder()) { |
| 80 | m_pageOverlays[i].swap(m_pageOverlays[i - 1]); |
| 81 | zOrderChanged = true; |
| 82 | } |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | // If we did move the overlay, that means z-order is changed and we need to |
| 87 | // update overlay layers' z-order. Otherwise, just update current overlay. |
| 88 | if (zOrderChanged) { |
| 89 | for (size_t i = 0; i < m_pageOverlays.size(); ++i) |
| 90 | m_pageOverlays[i]->clear(); |
| 91 | update(); |
| 92 | } else |
| 93 | pageOverlay->update(); |
| 94 | |
| 95 | return added; |
| 96 | } |
| 97 | |
| 98 | bool PageOverlayList::remove(WebPageOverlay* overlay) |
| 99 | { |
| 100 | size_t index = find(overlay); |
Torne (Richard Coles) | 06f816c | 2013-09-26 13:25:12 +0100 | [diff] [blame] | 101 | if (index == WTF::kNotFound) |
Torne (Richard Coles) | 5c87bf8 | 2012-11-14 11:46:17 +0000 | [diff] [blame] | 102 | return false; |
| 103 | |
| 104 | m_pageOverlays[index]->clear(); |
| 105 | m_pageOverlays.remove(index); |
| 106 | return true; |
| 107 | } |
| 108 | |
| 109 | void PageOverlayList::update() |
| 110 | { |
| 111 | for (size_t i = 0; i < m_pageOverlays.size(); ++i) |
| 112 | m_pageOverlays[i]->update(); |
| 113 | } |
| 114 | |
| 115 | void PageOverlayList::paintWebFrame(WebCore::GraphicsContext& gc) |
| 116 | { |
| 117 | for (size_t i = 0; i < m_pageOverlays.size(); ++i) |
| 118 | m_pageOverlays[i]->paintWebFrame(gc); |
| 119 | } |
| 120 | |
| 121 | size_t PageOverlayList::find(WebPageOverlay* overlay) |
| 122 | { |
| 123 | for (size_t i = 0; i < m_pageOverlays.size(); ++i) { |
| 124 | if (m_pageOverlays[i]->overlay() == overlay) |
| 125 | return i; |
| 126 | } |
Torne (Richard Coles) | 06f816c | 2013-09-26 13:25:12 +0100 | [diff] [blame] | 127 | return WTF::kNotFound; |
Torne (Richard Coles) | 5c87bf8 | 2012-11-14 11:46:17 +0000 | [diff] [blame] | 128 | } |
| 129 | |
Torne (Richard Coles) | 926b001 | 2013-03-28 15:32:48 +0000 | [diff] [blame] | 130 | size_t PageOverlayList::findGraphicsLayer(WebCore::GraphicsLayer* layer) |
| 131 | { |
| 132 | for (size_t i = 0; i < m_pageOverlays.size(); ++i) { |
| 133 | if (m_pageOverlays[i]->graphicsLayer() == layer) |
| 134 | return i; |
| 135 | } |
Torne (Richard Coles) | 06f816c | 2013-09-26 13:25:12 +0100 | [diff] [blame] | 136 | return WTF::kNotFound; |
Torne (Richard Coles) | 926b001 | 2013-03-28 15:32:48 +0000 | [diff] [blame] | 137 | } |
| 138 | |
Torne (Richard Coles) | 51b2906 | 2013-11-28 11:56:03 +0000 | [diff] [blame] | 139 | } // namespace blink |