Split out WaylandScreens into own header and source file
This reduces the needed ifdefs in screens and makes it easier to unit test Screens.
This commit is contained in:
Martin Gräßlin
parent
60e847cdd6
commit
73098cbfdc
5 changed files with 305 additions and 248 deletions
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@ -426,6 +426,7 @@ endif()
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if(Wayland_Client_FOUND AND XKB_FOUND)
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set(kwin_KDEINIT_SRCS
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${kwin_KDEINIT_SRCS}
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screens_wayland.cpp
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wayland_backend.cpp
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wayland_client/buffer.cpp
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wayland_client/compositor.cpp
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229
screens.cpp
229
screens.cpp
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@ -22,10 +22,9 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "cursor.h"
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#include "settings.h"
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#include "workspace.h"
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#include <config-kwin.h>
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#if HAVE_WAYLAND
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#include "wayland_backend.h"
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#include "wayland_client/output.h"
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#include <xcb/randr.h>
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#include "screens_wayland.h"
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#endif
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#include <QApplication>
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@ -209,228 +208,4 @@ void DesktopWidgetScreens::updateCount()
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setCount(m_desktop->screenCount());
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}
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#if HAVE_WAYLAND
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WaylandScreens::WaylandScreens(QObject* parent)
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: Screens(parent)
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{
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}
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WaylandScreens::~WaylandScreens()
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{
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}
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void WaylandScreens::init()
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{
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Screens::init();
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connect(Wayland::WaylandBackend::self(), &Wayland::WaylandBackend::outputsChanged,
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this, &WaylandScreens::startChangedTimer);
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updateCount();
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}
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QRect WaylandScreens::geometry(int screen) const
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{
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if (screen >= m_geometries.size()) {
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return QRect();
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}
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return m_geometries.at(screen);
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}
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QSize WaylandScreens::size(int screen) const
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{
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return geometry(screen).size();
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}
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int WaylandScreens::number(const QPoint &pos) const
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{
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int bestScreen = 0;
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int minDistance = INT_MAX;
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for (int i = 0; i < m_geometries.size(); ++i) {
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const QRect &geo = m_geometries.at(i);
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if (geo.contains(pos)) {
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return i;
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}
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int distance = QPoint(geo.topLeft() - pos).manhattanLength();
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distance = qMin(distance, QPoint(geo.topRight() - pos).manhattanLength());
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distance = qMin(distance, QPoint(geo.bottomRight() - pos).manhattanLength());
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distance = qMin(distance, QPoint(geo.bottomLeft() - pos).manhattanLength());
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if (distance < minDistance) {
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minDistance = distance;
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bestScreen = i;
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}
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}
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return bestScreen;
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}
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void WaylandScreens::updateCount()
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{
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m_geometries.clear();
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int count = 0;
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const QList<Wayland::Output*> &outputs = Wayland::WaylandBackend::self()->outputs();
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for (auto it = outputs.begin(); it != outputs.end(); ++it) {
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if ((*it)->pixelSize().isEmpty()) {
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continue;
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}
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count++;
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m_geometries.append(QRect((*it)->globalPosition(), (*it)->pixelSize()));
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}
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if (m_geometries.isEmpty()) {
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// we need a fake screen
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m_geometries.append(QRect(0, 0, displayWidth(), displayHeight()));
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setCount(1);
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return;
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}
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setCount(m_geometries.count());
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updateXRandr();
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emit changed();
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}
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namespace RandR
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{
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using namespace Xcb;
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XCB_WRAPPER(CurrentResources, xcb_randr_get_screen_resources_current, xcb_window_t)
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}
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static bool setNewScreenSize(const QSize &size)
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{
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auto c = xcb_randr_set_screen_size_checked(connection(), rootWindow(), size.width(), size.height(), 1, 1);
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ScopedCPointer<xcb_generic_error_t> error(xcb_request_check(connection(), c));
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if (!error.isNull()) {
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qDebug() << "Error setting screen size: " << error->error_code;
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return false;
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}
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return true;
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}
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static xcb_randr_crtc_t getCrtc(const xcb_randr_get_screen_resources_current_reply_t* r)
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{
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if (xcb_randr_get_screen_resources_current_crtcs_length(r) == 0) {
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qDebug() << "No CRTCs";
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return XCB_NONE;
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}
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return xcb_randr_get_screen_resources_current_crtcs(r)[0];
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}
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static xcb_randr_output_t getOutputForCrtc(xcb_randr_crtc_t crtc)
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{
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ScopedCPointer<xcb_randr_get_crtc_info_reply_t> info(xcb_randr_get_crtc_info_reply(
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connection(), xcb_randr_get_crtc_info(connection(), crtc, XCB_TIME_CURRENT_TIME), nullptr));
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if (info->num_outputs == 0) {
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return XCB_NONE;
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}
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return xcb_randr_get_crtc_info_outputs(info.data())[0];
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}
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static xcb_randr_mode_t createNewMode(const QSize &size)
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{
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// need to create the new mode
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qDebug() << "Creating a new mode";
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QString name(QString::number(size.width()));
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name.append('x');
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name.append(QString::number(size.height()));
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xcb_randr_mode_info_t newInfo;
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newInfo.dot_clock = 0;
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newInfo.height = size.height();
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newInfo.hskew = 0;
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newInfo.hsync_end = 0;
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newInfo.hsync_start = 0;
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newInfo.htotal = size.width();
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newInfo.id = 0;
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newInfo.mode_flags = 0;
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newInfo.vsync_end = 0;
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newInfo.vsync_start = 0;
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newInfo.vtotal = size.height();
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newInfo.width = size.width();
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newInfo.name_len = name.length();
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auto cookie = xcb_randr_create_mode_unchecked(connection(), rootWindow(), newInfo, name.length(), name.toUtf8().constData());
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ScopedCPointer<xcb_randr_create_mode_reply_t> reply(xcb_randr_create_mode_reply(connection(), cookie, nullptr));
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if (!reply.isNull()) {
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return reply->mode;
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}
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return XCB_NONE;
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}
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static xcb_randr_mode_t getModeForSize(const QSize &size, const xcb_randr_get_screen_resources_current_reply_t* r)
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{
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xcb_randr_mode_info_t *infos = xcb_randr_get_screen_resources_current_modes(r);
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const int modeInfoLength = xcb_randr_get_screen_resources_current_modes_length(r);
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// check available modes
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for (int i = 0; i < modeInfoLength; ++i) {
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xcb_randr_mode_info_t modeInfo = infos[i];
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if (modeInfo.width == size.width() && modeInfo.height == size.height()) {
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qDebug() << "Found our required mode";
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return modeInfo.id;
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}
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}
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// did not find our mode, so create it
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return createNewMode(size);
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}
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static bool addModeToOutput(xcb_randr_output_t output, xcb_randr_mode_t mode)
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{
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ScopedCPointer<xcb_randr_get_output_info_reply_t> info(xcb_randr_get_output_info_reply(connection(),
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xcb_randr_get_output_info(connection(), output, XCB_TIME_CURRENT_TIME), nullptr));
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xcb_randr_mode_t *modes = xcb_randr_get_output_info_modes(info.data());
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for (int i = 0; i < info->num_modes; ++i) {
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if (modes[i] == mode) {
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return true;
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}
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}
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qDebug() << "Need to add the mode to output";
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auto c = xcb_randr_add_output_mode_checked(connection(), output, mode);
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ScopedCPointer<xcb_generic_error_t> error(xcb_request_check(connection(), c));
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if (!error.isNull()) {
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qDebug() << "Error while adding mode to output: " << error->error_code;
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return false;
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}
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return true;
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}
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void WaylandScreens::updateXRandr()
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{
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if (!Xcb::Extensions::self()->isRandrAvailable()) {
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qDebug() << "No RandR extension available, cannot sync with X";
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return;
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}
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QRegion screens;
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foreach (const QRect &rect, m_geometries) {
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screens = screens.united(rect);
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}
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const QSize &size = screens.boundingRect().size();
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if (size.isEmpty()) {
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return;
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}
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RandR::CurrentResources currentResources(rootWindow());
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xcb_randr_crtc_t crtc = getCrtc(currentResources.data());
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if (crtc == XCB_NONE) {
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return;
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}
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xcb_randr_output_t output = getOutputForCrtc(crtc);
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if (output == XCB_NONE) {
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return;
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}
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// first disable the first CRTC
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xcb_randr_set_crtc_config(connection(), crtc, XCB_TIME_CURRENT_TIME, XCB_TIME_CURRENT_TIME,
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0, 0, XCB_NONE, XCB_RANDR_ROTATION_ROTATE_0, 0, nullptr);
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// then set new screen size
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if (!setNewScreenSize(size)) {
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return;
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}
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xcb_randr_mode_t mode = getModeForSize(size, currentResources.data());
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if (mode == XCB_NONE) {
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return;
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}
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if (!addModeToOutput(output, mode)) {
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return;
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}
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// enable CRTC again
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xcb_randr_set_crtc_config(connection(), crtc, XCB_TIME_CURRENT_TIME, XCB_TIME_CURRENT_TIME,
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0, 0, mode, XCB_RANDR_ROTATION_ROTATE_0, 1, &output);
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}
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#endif
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} // namespace
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21
screens.h
21
screens.h
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@ -22,7 +22,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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// KWin includes
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#include <kwinglobals.h>
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#include <config-kwin.h>
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// KDE includes
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#include <KConfig>
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#include <KSharedConfig>
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@ -161,26 +160,6 @@ private:
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QDesktopWidget *m_desktop;
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};
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#if HAVE_WAYLAND
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class WaylandScreens : public Screens
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{
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Q_OBJECT
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public:
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explicit WaylandScreens(QObject *parent);
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virtual ~WaylandScreens();
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void init() override;
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QRect geometry(int screen) const override;
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QSize size(int screen) const override;
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int number(const QPoint& pos) const override;
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protected Q_SLOTS:
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void updateCount() override;
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private:
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void updateXRandr();
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QList<QRect> m_geometries;
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};
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#endif
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inline
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void Screens::setConfig(KSharedConfig::Ptr config)
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{
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254
screens_wayland.cpp
Normal file
254
screens_wayland.cpp
Normal file
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@ -0,0 +1,254 @@
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/********************************************************************
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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_wayland.h"
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#include "wayland_backend.h"
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#include "wayland_client/output.h"
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#include "xcbutils.h"
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#include <QDebug>
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#include <xcb/randr.h>
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namespace KWin
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{
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WaylandScreens::WaylandScreens(QObject* parent)
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: Screens(parent)
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{
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}
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WaylandScreens::~WaylandScreens()
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{
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}
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void WaylandScreens::init()
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{
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Screens::init();
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connect(Wayland::WaylandBackend::self(), &Wayland::WaylandBackend::outputsChanged,
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this, &WaylandScreens::startChangedTimer);
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updateCount();
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}
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QRect WaylandScreens::geometry(int screen) const
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{
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if (screen >= m_geometries.size()) {
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return QRect();
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}
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return m_geometries.at(screen);
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}
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QSize WaylandScreens::size(int screen) const
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{
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return geometry(screen).size();
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}
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int WaylandScreens::number(const QPoint &pos) const
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{
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int bestScreen = 0;
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int minDistance = INT_MAX;
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for (int i = 0; i < m_geometries.size(); ++i) {
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const QRect &geo = m_geometries.at(i);
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if (geo.contains(pos)) {
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return i;
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}
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int distance = QPoint(geo.topLeft() - pos).manhattanLength();
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distance = qMin(distance, QPoint(geo.topRight() - pos).manhattanLength());
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distance = qMin(distance, QPoint(geo.bottomRight() - pos).manhattanLength());
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distance = qMin(distance, QPoint(geo.bottomLeft() - pos).manhattanLength());
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if (distance < minDistance) {
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minDistance = distance;
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bestScreen = i;
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}
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}
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return bestScreen;
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}
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void WaylandScreens::updateCount()
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{
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m_geometries.clear();
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int count = 0;
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const QList<Wayland::Output*> &outputs = Wayland::WaylandBackend::self()->outputs();
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for (auto it = outputs.begin(); it != outputs.end(); ++it) {
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if ((*it)->pixelSize().isEmpty()) {
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continue;
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}
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count++;
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m_geometries.append(QRect((*it)->globalPosition(), (*it)->pixelSize()));
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}
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if (m_geometries.isEmpty()) {
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// we need a fake screen
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m_geometries.append(QRect(0, 0, displayWidth(), displayHeight()));
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setCount(1);
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return;
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}
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setCount(m_geometries.count());
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updateXRandr();
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emit changed();
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}
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namespace RandR
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{
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using namespace Xcb;
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XCB_WRAPPER(CurrentResources, xcb_randr_get_screen_resources_current, xcb_window_t)
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}
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static bool setNewScreenSize(const QSize &size)
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{
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auto c = xcb_randr_set_screen_size_checked(connection(), rootWindow(), size.width(), size.height(), 1, 1);
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ScopedCPointer<xcb_generic_error_t> error(xcb_request_check(connection(), c));
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if (!error.isNull()) {
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qDebug() << "Error setting screen size: " << error->error_code;
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return false;
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}
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return true;
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}
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static xcb_randr_crtc_t getCrtc(const xcb_randr_get_screen_resources_current_reply_t* r)
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{
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if (xcb_randr_get_screen_resources_current_crtcs_length(r) == 0) {
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qDebug() << "No CRTCs";
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return XCB_NONE;
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}
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return xcb_randr_get_screen_resources_current_crtcs(r)[0];
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}
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static xcb_randr_output_t getOutputForCrtc(xcb_randr_crtc_t crtc)
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{
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ScopedCPointer<xcb_randr_get_crtc_info_reply_t> info(xcb_randr_get_crtc_info_reply(
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connection(), xcb_randr_get_crtc_info(connection(), crtc, XCB_TIME_CURRENT_TIME), nullptr));
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if (info->num_outputs == 0) {
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return XCB_NONE;
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}
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return xcb_randr_get_crtc_info_outputs(info.data())[0];
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}
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static xcb_randr_mode_t createNewMode(const QSize &size)
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{
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// need to create the new mode
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qDebug() << "Creating a new mode";
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QString name(QString::number(size.width()));
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name.append('x');
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name.append(QString::number(size.height()));
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xcb_randr_mode_info_t newInfo;
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newInfo.dot_clock = 0;
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newInfo.height = size.height();
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newInfo.hskew = 0;
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newInfo.hsync_end = 0;
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newInfo.hsync_start = 0;
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newInfo.htotal = size.width();
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newInfo.id = 0;
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newInfo.mode_flags = 0;
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newInfo.vsync_end = 0;
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newInfo.vsync_start = 0;
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newInfo.vtotal = size.height();
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newInfo.width = size.width();
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newInfo.name_len = name.length();
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auto cookie = xcb_randr_create_mode_unchecked(connection(), rootWindow(), newInfo, name.length(), name.toUtf8().constData());
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ScopedCPointer<xcb_randr_create_mode_reply_t> reply(xcb_randr_create_mode_reply(connection(), cookie, nullptr));
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if (!reply.isNull()) {
|
||||
return reply->mode;
|
||||
}
|
||||
return XCB_NONE;
|
||||
}
|
||||
|
||||
static xcb_randr_mode_t getModeForSize(const QSize &size, const xcb_randr_get_screen_resources_current_reply_t* r)
|
||||
{
|
||||
xcb_randr_mode_info_t *infos = xcb_randr_get_screen_resources_current_modes(r);
|
||||
const int modeInfoLength = xcb_randr_get_screen_resources_current_modes_length(r);
|
||||
// check available modes
|
||||
for (int i = 0; i < modeInfoLength; ++i) {
|
||||
xcb_randr_mode_info_t modeInfo = infos[i];
|
||||
if (modeInfo.width == size.width() && modeInfo.height == size.height()) {
|
||||
qDebug() << "Found our required mode";
|
||||
return modeInfo.id;
|
||||
}
|
||||
}
|
||||
// did not find our mode, so create it
|
||||
return createNewMode(size);
|
||||
}
|
||||
|
||||
static bool addModeToOutput(xcb_randr_output_t output, xcb_randr_mode_t mode)
|
||||
{
|
||||
ScopedCPointer<xcb_randr_get_output_info_reply_t> info(xcb_randr_get_output_info_reply(connection(),
|
||||
xcb_randr_get_output_info(connection(), output, XCB_TIME_CURRENT_TIME), nullptr));
|
||||
xcb_randr_mode_t *modes = xcb_randr_get_output_info_modes(info.data());
|
||||
for (int i = 0; i < info->num_modes; ++i) {
|
||||
if (modes[i] == mode) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
qDebug() << "Need to add the mode to output";
|
||||
auto c = xcb_randr_add_output_mode_checked(connection(), output, mode);
|
||||
ScopedCPointer<xcb_generic_error_t> error(xcb_request_check(connection(), c));
|
||||
if (!error.isNull()) {
|
||||
qDebug() << "Error while adding mode to output: " << error->error_code;
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
void WaylandScreens::updateXRandr()
|
||||
{
|
||||
if (!Xcb::Extensions::self()->isRandrAvailable()) {
|
||||
qDebug() << "No RandR extension available, cannot sync with X";
|
||||
return;
|
||||
}
|
||||
QRegion screens;
|
||||
foreach (const QRect &rect, m_geometries) {
|
||||
screens = screens.united(rect);
|
||||
}
|
||||
const QSize &size = screens.boundingRect().size();
|
||||
if (size.isEmpty()) {
|
||||
return;
|
||||
}
|
||||
|
||||
RandR::CurrentResources currentResources(rootWindow());
|
||||
xcb_randr_crtc_t crtc = getCrtc(currentResources.data());
|
||||
if (crtc == XCB_NONE) {
|
||||
return;
|
||||
}
|
||||
xcb_randr_output_t output = getOutputForCrtc(crtc);
|
||||
if (output == XCB_NONE) {
|
||||
return;
|
||||
}
|
||||
// first disable the first CRTC
|
||||
xcb_randr_set_crtc_config(connection(), crtc, XCB_TIME_CURRENT_TIME, XCB_TIME_CURRENT_TIME,
|
||||
0, 0, XCB_NONE, XCB_RANDR_ROTATION_ROTATE_0, 0, nullptr);
|
||||
|
||||
// then set new screen size
|
||||
if (!setNewScreenSize(size)) {
|
||||
return;
|
||||
}
|
||||
|
||||
xcb_randr_mode_t mode = getModeForSize(size, currentResources.data());
|
||||
if (mode == XCB_NONE) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (!addModeToOutput(output, mode)) {
|
||||
return;
|
||||
}
|
||||
// enable CRTC again
|
||||
xcb_randr_set_crtc_config(connection(), crtc, XCB_TIME_CURRENT_TIME, XCB_TIME_CURRENT_TIME,
|
||||
0, 0, mode, XCB_RANDR_ROTATION_ROTATE_0, 1, &output);
|
||||
}
|
||||
|
||||
}
|
||||
48
screens_wayland.h
Normal file
48
screens_wayland.h
Normal file
|
|
@ -0,0 +1,48 @@
|
|||
/********************************************************************
|
||||
KWin - the KDE window manager
|
||||
This file is part of the KDE project.
|
||||
|
||||
Copyright (C) 2013 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/>.
|
||||
*********************************************************************/
|
||||
#ifndef KWIN_SCREENS_WAYLAND_H
|
||||
#define KWIN_SCREENS_WAYLAND_H
|
||||
|
||||
#include "screens.h"
|
||||
|
||||
namespace KWin
|
||||
{
|
||||
|
||||
class WaylandScreens : public Screens
|
||||
{
|
||||
Q_OBJECT
|
||||
public:
|
||||
explicit WaylandScreens(QObject *parent);
|
||||
virtual ~WaylandScreens();
|
||||
void init() override;
|
||||
QRect geometry(int screen) const override;
|
||||
QSize size(int screen) const override;
|
||||
int number(const QPoint& pos) const override;
|
||||
|
||||
protected Q_SLOTS:
|
||||
void updateCount() override;
|
||||
private:
|
||||
void updateXRandr();
|
||||
QList<QRect> m_geometries;
|
||||
};
|
||||
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue