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107 lines
3.3 KiB
C++
107 lines
3.3 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) 2014 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_xrandr.h"
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#include "x11_platform.h"
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#ifndef KWIN_UNIT_TEST
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#include "composite.h"
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#include "options.h"
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#include "workspace.h"
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#endif
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#include "xcbutils.h"
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namespace KWin
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{
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XRandRScreens::XRandRScreens(X11StandalonePlatform *backend, QObject *parent)
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: OutputScreens(backend, parent)
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, X11EventFilter(Xcb::Extensions::self()->randrNotifyEvent())
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, m_backend(backend)
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{
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}
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XRandRScreens::~XRandRScreens() = default;
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void XRandRScreens::init()
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{
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KWin::Screens::init();
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// we need to call ScreenResources at least once to be able to use current
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m_backend->initOutputs();
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setCount(m_backend->outputs().count());
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emit changed();
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#ifndef KWIN_UNIT_TEST
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connect(this, &XRandRScreens::changed, this, [] {
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if (!workspace()->compositing()) {
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return;
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}
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if (Compositor::self()->refreshRate() == Options::currentRefreshRate()) {
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return;
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}
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// desktopResized() should take care of when the size or
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// shape of the desktop has changed, but we also want to
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// catch refresh rate changes
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Compositor::self()->reinitialize();
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});
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#endif
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}
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void XRandRScreens::updateCount()
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{
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m_backend->updateOutputs();
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setCount(m_backend->outputs().count());
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}
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bool XRandRScreens::event(xcb_generic_event_t *event)
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{
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Q_ASSERT((event->response_type & ~0x80) == Xcb::Extensions::self()->randrNotifyEvent());
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// let's try to gather a few XRandR events, unlikely that there is just one
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startChangedTimer();
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// update default screen
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auto *xrrEvent = reinterpret_cast<xcb_randr_screen_change_notify_event_t*>(event);
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xcb_screen_t *screen = defaultScreen();
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if (xrrEvent->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270)) {
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screen->width_in_pixels = xrrEvent->height;
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screen->height_in_pixels = xrrEvent->width;
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screen->width_in_millimeters = xrrEvent->mheight;
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screen->height_in_millimeters = xrrEvent->mwidth;
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} else {
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screen->width_in_pixels = xrrEvent->width;
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screen->height_in_pixels = xrrEvent->height;
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screen->width_in_millimeters = xrrEvent->mwidth;
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screen->height_in_millimeters = xrrEvent->mheight;
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}
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return false;
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}
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QSize XRandRScreens::displaySize() const
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{
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xcb_screen_t *screen = defaultScreen();
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if (!screen) {
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return Screens::size();
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}
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return QSize(screen->width_in_pixels, screen->height_in_pixels);
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}
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} // namespace
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