935a6d7e21
The default implementation of Screens::displaySize() returns the bounding rectangle of all available outputs. In case the Xrandr extension is unavailable, there will be a fake output whose dimensions are the same as the dimensions of all screens combined.
82 lines
2.3 KiB
C++
82 lines
2.3 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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SPDX-FileCopyrightText: 2014 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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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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: Screens(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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#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 = kwinApp()->x11DefaultScreen();
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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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} // namespace
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