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142 lines
3.8 KiB
142 lines
3.8 KiB
/******************************************************************** |
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KWin - the KDE window manager |
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This file is part of the KDE project. |
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Copyright (C) 2012 Martin Gräßlin <mgraesslin@kde.org> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************/ |
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#include "desktopchain.h" |
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namespace KWin |
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{ |
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namespace TabBox |
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{ |
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DesktopChain::DesktopChain(uint initialSize) |
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: m_chain(initialSize) |
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{ |
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init(); |
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} |
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void DesktopChain::init() |
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{ |
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for (int i = 0; i < m_chain.size(); ++i) { |
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m_chain[i] = i + 1; |
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} |
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} |
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uint DesktopChain::next(uint indexDesktop) const |
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{ |
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const int i = m_chain.indexOf(indexDesktop); |
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if (i >= 0 && i + 1 < m_chain.size()) { |
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return m_chain[i+1]; |
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} else if (m_chain.size() > 0) { |
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return m_chain[0]; |
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} else { |
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return 1; |
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} |
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} |
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void DesktopChain::resize(uint previousSize, uint newSize) |
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{ |
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Q_ASSERT(int(previousSize) == m_chain.size()); |
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m_chain.resize(newSize); |
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if (newSize >= previousSize) { |
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// We do not destroy the chain in case new desktops are added |
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for (uint i = previousSize; i < newSize; ++i) { |
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m_chain[i] = i + 1; |
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} |
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} else { |
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// But when desktops are removed, we may have to modify the chain a bit, |
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// otherwise invalid desktops may show up. |
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for (int i = 0; i < m_chain.size(); ++i) { |
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m_chain[i] = qMin(m_chain[i], newSize); |
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} |
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} |
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} |
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void DesktopChain::add(uint desktop) |
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{ |
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if (m_chain.isEmpty() || int(desktop) > m_chain.count()) { |
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return; |
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} |
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int index = m_chain.indexOf(desktop); |
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if (index == -1) { |
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// not found - shift all elements by one position |
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index = m_chain.size() - 1; |
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} |
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for (int i = index; i > 0; --i) { |
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m_chain[i] = m_chain[i-1]; |
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} |
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m_chain[0] = desktop; |
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} |
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DesktopChainManager::DesktopChainManager(QObject *parent) |
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: QObject(parent) |
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, m_maxChainSize(0) |
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{ |
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m_currentChain = m_chains.insert(QString(), DesktopChain()); |
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} |
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DesktopChainManager::~DesktopChainManager() |
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{ |
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} |
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uint DesktopChainManager::next(uint indexDesktop) const |
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{ |
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return m_currentChain.value().next(indexDesktop); |
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} |
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void DesktopChainManager::resize(uint previousSize, uint newSize) |
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{ |
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m_maxChainSize = newSize; |
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for (DesktopChains::iterator it = m_chains.begin(); it != m_chains.end(); ++it) { |
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it.value().resize(previousSize, newSize); |
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} |
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} |
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void DesktopChainManager::addDesktop(uint previousDesktop, uint currentDesktop) |
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{ |
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Q_UNUSED(previousDesktop) |
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m_currentChain.value().add(currentDesktop); |
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} |
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void DesktopChainManager::useChain(const QString &identifier) |
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{ |
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if (m_currentChain.key().isNull()) { |
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createFirstChain(identifier); |
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} else { |
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m_currentChain = m_chains.find(identifier); |
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if (m_currentChain == m_chains.end()) { |
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m_currentChain = addNewChain(identifier); |
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} |
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} |
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} |
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void DesktopChainManager::createFirstChain(const QString &identifier) |
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{ |
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DesktopChain value(m_currentChain.value()); |
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m_chains.erase(m_currentChain); |
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m_currentChain = m_chains.insert(identifier, value); |
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} |
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QHash< QString, DesktopChain >::Iterator DesktopChainManager::addNewChain(const QString &identifier) |
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{ |
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return m_chains.insert(identifier, DesktopChain(m_maxChainSize)); |
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} |
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} // namespace TabBox |
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} // namespace KWin
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