kwin/plugins/platforms/virtual/screens_virtual.cpp
Martin Gräßlin d0a6aa0836 [platforms/virtual] Support setting random screen geometries
A signal is added to the VirtualBackend to change all screen geometries.
This can be used from auto tests to change the screens. But it's not yet
correctly reflected in other areas. E.g. not forwarded to Wayland Output,
etc.
2016-06-02 09:28:02 +02:00

94 lines
2.8 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "screens_virtual.h"
#include "virtual_backend.h"
namespace KWin
{
VirtualScreens::VirtualScreens(VirtualBackend *backend, QObject *parent)
: Screens(parent)
, m_backend(backend)
{
}
VirtualScreens::~VirtualScreens() = default;
void VirtualScreens::init()
{
KWin::Screens::init();
connect(m_backend, &VirtualBackend::sizeChanged,
this, &VirtualScreens::startChangedTimer);
connect(m_backend, &VirtualBackend::outputGeometriesChanged, this,
[this] (const QVector<QRect> &geometries) {
// TODO: update Wayland Output
m_geometries = geometries;
emit changed();
}
);
updateCount();
emit changed();
}
QRect VirtualScreens::geometry(int screen) const
{
if (screen >= m_geometries.count()) {
return QRect();
}
return m_geometries.at(screen);
}
QSize VirtualScreens::size(int screen) const
{
return geometry(screen).size();
}
void VirtualScreens::updateCount()
{
m_geometries.clear();
const QSize size = m_backend->size();
for (int i = 0; i < m_backend->outputCount(); ++i) {
m_geometries.append(QRect(size.width() * i, 0, size.width(), size.height()));
}
setCount(m_backend->outputCount());
}
int VirtualScreens::number(const QPoint &pos) const
{
int bestScreen = 0;
int minDistance = INT_MAX;
for (int i = 0; i < m_geometries.count(); ++i) {
const QRect &geo = m_geometries.at(i);
if (geo.contains(pos)) {
return i;
}
int distance = QPoint(geo.topLeft() - pos).manhattanLength();
distance = qMin(distance, QPoint(geo.topRight() - pos).manhattanLength());
distance = qMin(distance, QPoint(geo.bottomRight() - pos).manhattanLength());
distance = qMin(distance, QPoint(geo.bottomLeft() - pos).manhattanLength());
if (distance < minDistance) {
minDistance = distance;
bestScreen = i;
}
}
return bestScreen;
}
}