169 lines
4.7 KiB
C++
169 lines
4.7 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) 2015 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 "abstract_backend.h"
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#include <config-kwin.h>
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#include "composite.h"
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#include "cursor.h"
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#include "wayland_server.h"
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#if HAVE_WAYLAND_CURSOR
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#include "wayland_backend.h"
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#endif
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// KWayland
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#include <KWayland/Client/buffer.h>
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#include <KWayland/Client/connection_thread.h>
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#include <KWayland/Server/buffer_interface.h>
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#include <KWayland/Server/clientconnection.h>
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#include <KWayland/Server/seat_interface.h>
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#include <KWayland/Server/surface_interface.h>
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// Wayland
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#if HAVE_WAYLAND_CURSOR
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#include <wayland-cursor.h>
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#endif
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namespace KWin
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{
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AbstractBackend::AbstractBackend(QObject *parent)
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: QObject(parent)
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{
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WaylandServer::self()->installBackend(this);
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}
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AbstractBackend::~AbstractBackend()
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{
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WaylandServer::self()->uninstallBackend(this);
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}
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void AbstractBackend::installCursorFromServer()
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{
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if (!m_softWareCursor) {
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return;
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}
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if (!waylandServer() || !waylandServer()->seat()->focusedPointer()) {
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return;
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}
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auto c = waylandServer()->seat()->focusedPointer()->cursor();
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if (!c) {
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return;
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}
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auto cursorSurface = c->surface();
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if (cursorSurface.isNull()) {
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return;
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}
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auto buffer = cursorSurface.data()->buffer();
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if (!buffer) {
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return;
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}
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triggerCursorRepaint();
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m_cursor.hotspot = c->hotspot();
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m_cursor.image = buffer->data().copy();
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}
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void AbstractBackend::installCursorImage(Qt::CursorShape shape)
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{
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if (!m_softWareCursor) {
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return;
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}
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#if HAVE_WAYLAND_CURSOR
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if (!m_cursorTheme) {
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// check whether we can create it
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if (waylandServer() && waylandServer()->internalShmPool()) {
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m_cursorTheme = new Wayland::WaylandCursorTheme(waylandServer()->internalShmPool(), this);
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}
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}
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if (!m_cursorTheme) {
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return;
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}
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wl_cursor_image *cursor = m_cursorTheme->get(shape);
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if (!cursor) {
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return;
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}
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wl_buffer *b = wl_cursor_image_get_buffer(cursor);
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if (!b) {
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return;
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}
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waylandServer()->internalClientConection()->flush();
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QMetaObject::invokeMethod(this,
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"installThemeCursor",
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Qt::QueuedConnection,
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Q_ARG(quint32, KWayland::Client::Buffer::getId(b)),
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Q_ARG(QPoint, QPoint(cursor->hotspot_x, cursor->hotspot_y)));
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#else
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Q_UNUSED(shape)
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#endif
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}
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void AbstractBackend::installThemeCursor(quint32 id, const QPoint &hotspot)
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{
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auto buffer = KWayland::Server::BufferInterface::get(waylandServer()->internalConnection()->getResource(id));
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if (!buffer) {
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return;
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}
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triggerCursorRepaint();
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m_cursor.hotspot = hotspot;
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m_cursor.image = buffer->data().copy();
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}
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Screens *AbstractBackend::createScreens(QObject *parent)
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{
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Q_UNUSED(parent)
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return nullptr;
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}
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OpenGLBackend *AbstractBackend::createOpenGLBackend()
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{
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return nullptr;
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}
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QPainterBackend *AbstractBackend::createQPainterBackend()
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{
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return nullptr;
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}
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void AbstractBackend::setSoftWareCursor(bool set)
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{
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if (m_softWareCursor == set) {
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return;
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}
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m_softWareCursor = set;
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if (m_softWareCursor) {
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connect(Cursor::self(), &Cursor::posChanged, this, &AbstractBackend::triggerCursorRepaint);
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} else {
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disconnect(Cursor::self(), &Cursor::posChanged, this, &AbstractBackend::triggerCursorRepaint);
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}
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}
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void AbstractBackend::triggerCursorRepaint()
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{
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if (!Compositor::self() || m_cursor.image.isNull()) {
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return;
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}
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Compositor::self()->addRepaint(m_cursor.lastRenderedPosition.x() - m_cursor.hotspot.x(),
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m_cursor.lastRenderedPosition.y() - m_cursor.hotspot.y(),
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m_cursor.image.width(), m_cursor.image.height());
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}
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void AbstractBackend::markCursorAsRendered()
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{
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m_cursor.lastRenderedPosition = Cursor::pos();
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}
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}
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