edb074cbc2
Following the approaches of other split out functionality Screens is a singleton class created by Workspace. The class takes over the responsibility for: * screenChanged signal delayed by timer * number of screens * geometry of given screen * active screen * config option for active screen follows mouse The class contains a small abstraction layer and has a concrete subclass wrapping around QDesktopWidget, but the idea is to go more low level and interact with XRandR directly to get more detailed information. All over KWin the usage from QDesktopWidget is ported over to the new Screens class. REVIEW: 109839
147 lines
3.4 KiB
C++
147 lines
3.4 KiB
C++
/********************************************************************
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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) 2013 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 "screens.h"
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#include "client.h"
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#include "cursor.h"
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#include "settings.h"
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#include <QApplication>
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#include <QDesktopWidget>
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#include <QTimer>
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namespace KWin
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{
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KWIN_SINGLETON_FACTORY_FACTORED(Screens, DesktopWidgetScreens)
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Screens::Screens(QObject *parent)
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: QObject(parent)
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, m_count(0)
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, m_current(0)
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, m_currentFollowsMouse(false)
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, m_changedTimer(new QTimer(this))
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{
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m_changedTimer->setSingleShot(true);
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m_changedTimer->setInterval(100);
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connect(m_changedTimer, SIGNAL(timeout()), SIGNAL(changed()));
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Settings settings;
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settings.setDefaults();
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m_currentFollowsMouse = settings.activeMouseScreen();
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}
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Screens::~Screens()
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{
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s_self = NULL;
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}
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void Screens::reconfigure()
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{
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if (!m_config) {
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return;
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}
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Settings settings(m_config);
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settings.readConfig();
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setCurrentFollowsMouse(settings.activeMouseScreen());
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}
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void Screens::setCount(int count)
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{
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if (m_count == count) {
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return;
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}
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const int previous = m_count;
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m_count = count;
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emit countChanged(previous, count);
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}
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void Screens::setCurrent(int current)
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{
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if (m_current == current) {
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return;
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}
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m_current = current;
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}
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void Screens::setCurrent(const QPoint &pos)
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{
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setCurrent(number(pos));
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}
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void Screens::setCurrent(const Client *c)
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{
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if (!c->isActive()) {
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return;
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}
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if (!c->isOnScreen(m_current)) {
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setCurrent(c->screen());
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}
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}
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void Screens::setCurrentFollowsMouse(bool follows)
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{
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if (m_currentFollowsMouse == follows) {
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return;
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}
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m_currentFollowsMouse = follows;
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}
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int Screens::current() const
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{
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if (m_currentFollowsMouse) {
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return number(Cursor::pos());
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}
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Client *client = Workspace::self()->activeClient();
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if (client && !client->isOnScreen(m_current)) {
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return client->screen();
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}
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return m_current;
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}
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void Screens::startChangedTimer()
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{
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m_changedTimer->start();
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}
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DesktopWidgetScreens::DesktopWidgetScreens(QObject *parent)
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: Screens(parent)
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, m_desktop(QApplication::desktop())
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{
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connect(m_desktop, SIGNAL(screenCountChanged(int)), SLOT(setCount(int)));
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connect(m_desktop, SIGNAL(screenCountChanged(int)), SLOT(startChangedTimer()));
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connect(m_desktop, SIGNAL(resized(int)), SLOT(startChangedTimer()));
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setCount(m_desktop->screenCount());
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}
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DesktopWidgetScreens::~DesktopWidgetScreens()
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{
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}
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QRect DesktopWidgetScreens::geometry(int screen) const
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{
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return m_desktop->screenGeometry(screen);
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}
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int DesktopWidgetScreens::number(const QPoint &pos) const
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{
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return m_desktop->screenNumber(pos);
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}
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} // namespace
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