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Viewing changes to miral-qt/src/modules/Unity/Screens/screens.cpp

  • Committer: Gerry Boland
  • Date: 2016-06-01 22:06:51 UTC
  • mto: This revision was merged to the branch mainline in revision 178.
  • Revision ID: gerry.boland@canonical.com-20160601220651-ge508tffql4e7u7c
Import QtMir code into miral-qt subdirectory. Disabled by default, use -DMIRAL_ENABLE_QT=1 to build.

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miral-qt/src/modules/Unity/Screens/screens.cpp
 
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/*
 
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 * Copyright (C) 2016 Canonical, Ltd.
 
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 *
 
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 * This program is free software: you can redistribute it and/or modify it under
 
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 * the terms of the GNU Lesser General Public License version 3, as published by
 
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 * the Free Software Foundation.
 
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 *
 
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 * This program is distributed in the hope that it will be useful, but WITHOUT
 
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 * ANY WARRANTY; without even the implied warranties of MERCHANTABILITY,
 
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 * SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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 * Lesser General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU Lesser 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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// mirserver
 
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#include "screen.h"
 
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// Qt
 
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#include <QGuiApplication>
 
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#include <QScreen>
 
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Q_DECLARE_METATYPE(QScreen*)
 
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namespace qtmir {
 
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Screens::Screens(QObject *parent) :
 
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    QAbstractListModel(parent)
 
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{
 
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    auto app = static_cast<QGuiApplication *>(QGuiApplication::instance());
 
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    if (!app) {
 
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        return;
 
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    }
 
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    connect(app, &QGuiApplication::screenAdded, this, &Screens::onScreenAdded);
 
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    connect(app, &QGuiApplication::screenRemoved, this, &Screens::onScreenRemoved);
 
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    m_screenList = QGuiApplication::screens();
 
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}
 
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QHash<int, QByteArray> Screens::roleNames() const
 
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{
 
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    QHash<int, QByteArray> roles;
 
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    roles[ScreenRole] = "screen";
 
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    roles[OutputTypeRole] = "outputType";
 
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    roles[ScaleRole] = "scale";
 
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    roles[FormFactorRole] = "formFactor";
 
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    return roles;
 
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}
 
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QVariant Screens::data(const QModelIndex &index, int role) const
 
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{
 
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    if (!index.isValid() || index.row() >= m_screenList.size()) {
 
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        return QVariant();
 
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    }
 
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    switch(role) {
 
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    case ScreenRole:
 
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        return QVariant::fromValue(m_screenList.at(index.row()));
 
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    case OutputTypeRole: {
 
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        auto screen = static_cast<Screen*>(m_screenList.at(index.row())->handle());
 
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        if (screen) {
 
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            return QVariant(static_cast<OutputTypes>(screen->outputType())); //FIXME: cheeky
 
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        } else {
 
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            return OutputTypes::Unknown;
 
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        }
 
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    }
 
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    case ScaleRole: {
 
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        auto screen = static_cast<Screen*>(m_screenList.at(index.row())->handle());
 
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        if (screen) {
 
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            return QVariant(screen->scale());
 
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        } else {
 
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            return 1.0;
 
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        }
 
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    }
 
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    case FormFactorRole: {
 
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        auto screen = static_cast<Screen*>(m_screenList.at(index.row())->handle());
 
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        if (screen) {
 
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            return QVariant(static_cast<FormFactor>(screen->formFactor())); //FIXME: cheeky
 
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        } else {
 
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            return FormFactor::FormFactorUnknown;
 
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        }
 
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    }
 
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    } // switch
 
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    return QVariant();
 
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}
 
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int Screens::rowCount(const QModelIndex &) const
 
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{
 
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    return count();
 
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}
 
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int Screens::count() const
 
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{
 
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    return m_screenList.size();
 
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}
 
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void Screens::onScreenAdded(QScreen *screen)
 
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{
 
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    if (m_screenList.contains(screen))
 
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        return;
 
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    beginInsertRows(QModelIndex(), count(), count());
 
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    m_screenList.push_back(screen);
 
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    endInsertRows();
 
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    Q_EMIT screenAdded(screen);
 
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    Q_EMIT countChanged();
 
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}
 
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void Screens::onScreenRemoved(QScreen *screen)
 
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{
 
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    int index = m_screenList.indexOf(screen);
 
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    if (index < 0)
 
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        return;
 
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    beginRemoveRows(QModelIndex(), index, index);
 
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    m_screenList.removeAt(index);
 
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    endRemoveRows();
 
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    Q_EMIT screenRemoved(screen);
 
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    Q_EMIT countChanged();
 
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}
 
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} // namespace qtmir