c5693270db
At least the framebuffer backend does not have support for an overlay cursor. Thus the cursor needs to be rendered by the scene. This change allows a backend to set that it needs a software cursor which triggers tracking in the AbstractBackend. A repaint for the old cursor region is triggered whenever the cursor pos changes. So far only the QPainter/framebuffer scene is adjusted to render the software cursor. This is done after rendering a frame with the up to date cursor position. There is one problem, though: the KWin internal cursors don't work as we need to get it from the theme. Using wayland-cursor doesn't help as it gives us a (client) wl_buffer* and we cannot read the memory back.
117 lines
3.1 KiB
C++
117 lines
3.1 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 "abstract_backend.h"
|
|
#include "composite.h"
|
|
#include "cursor.h"
|
|
#include "wayland_server.h"
|
|
// KWayland
|
|
#include <KWayland/Server/buffer_interface.h>
|
|
#include <KWayland/Server/seat_interface.h>
|
|
#include <KWayland/Server/surface_interface.h>
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
AbstractBackend::AbstractBackend(QObject *parent)
|
|
: QObject(parent)
|
|
{
|
|
WaylandServer::self()->installBackend(this);
|
|
}
|
|
|
|
AbstractBackend::~AbstractBackend()
|
|
{
|
|
WaylandServer::self()->uninstallBackend(this);
|
|
}
|
|
|
|
void AbstractBackend::installCursorFromServer()
|
|
{
|
|
if (!m_softWareCursor) {
|
|
return;
|
|
}
|
|
if (!waylandServer() || !waylandServer()->seat()->focusedPointer()) {
|
|
return;
|
|
}
|
|
auto c = waylandServer()->seat()->focusedPointer()->cursor();
|
|
if (!c) {
|
|
return;
|
|
}
|
|
auto cursorSurface = c->surface();
|
|
if (cursorSurface.isNull()) {
|
|
return;
|
|
}
|
|
auto buffer = cursorSurface.data()->buffer();
|
|
if (!buffer) {
|
|
return;
|
|
}
|
|
triggerCursorRepaint();
|
|
m_cursor.hotspot = c->hotspot();
|
|
m_cursor.image = buffer->data().copy();
|
|
}
|
|
|
|
void AbstractBackend::installCursorImage(Qt::CursorShape shape)
|
|
{
|
|
Q_UNUSED(shape)
|
|
}
|
|
|
|
Screens *AbstractBackend::createScreens(QObject *parent)
|
|
{
|
|
Q_UNUSED(parent)
|
|
return nullptr;
|
|
}
|
|
|
|
OpenGLBackend *AbstractBackend::createOpenGLBackend()
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
QPainterBackend *AbstractBackend::createQPainterBackend()
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
void AbstractBackend::setSoftWareCursor(bool set)
|
|
{
|
|
if (m_softWareCursor == set) {
|
|
return;
|
|
}
|
|
m_softWareCursor = set;
|
|
if (m_softWareCursor) {
|
|
connect(Cursor::self(), &Cursor::posChanged, this, &AbstractBackend::triggerCursorRepaint);
|
|
} else {
|
|
disconnect(Cursor::self(), &Cursor::posChanged, this, &AbstractBackend::triggerCursorRepaint);
|
|
}
|
|
}
|
|
|
|
void AbstractBackend::triggerCursorRepaint()
|
|
{
|
|
if (!Compositor::self() || m_cursor.image.isNull()) {
|
|
return;
|
|
}
|
|
Compositor::self()->addRepaint(m_cursor.lastRenderedPosition.x() - m_cursor.hotspot.x(),
|
|
m_cursor.lastRenderedPosition.y() - m_cursor.hotspot.y(),
|
|
m_cursor.image.width(), m_cursor.image.height());
|
|
}
|
|
|
|
void AbstractBackend::markCursorAsRendered()
|
|
{
|
|
m_cursor.lastRenderedPosition = Cursor::pos();
|
|
}
|
|
|
|
}
|