kwin/src/wayland/touch_interface.cpp
David Edmundson d70bd2435b Introduce client level scale overrides
This allows for compositor managed different co-ordinate space between kwin's
logical co-ordinate space and a client's logical co-ordinate space.

When combined with a modified kwin!1959 this allows us to set a DPI in xrdb and
mark all xwayland windows as being 2x (or other) and avoid upscales for xwayland
clients in a way that doesn't impact other wayland clients or require
third-party changes. Any use of fractional values is in layers we control
instead of over the wire. kwayland-server is the right place for this
abstraction as we need Outputs to differ on a per resource basis. Something we
can't control from within kwin.

Right now only protocols used by Xwayland are covered. If we covered
remaining protocols we can offer user-control on all remaining clients which
could open up other possibilities such as a user controlled dynamic resizing,
or adapt to possible future protocol changes with wayland scaling.
2022-06-07 08:33:55 +01:00

127 lines
3.4 KiB
C++

/*
SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
SPDX-FileCopyrightText: 2020 Adrien Faveraux <ad1rie3@hotmail.fr>
SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
#include "touch_interface.h"
#include "clientconnection.h"
#include "display.h"
#include "seat_interface.h"
#include "surface_interface.h"
#include "touch_interface_p.h"
namespace KWaylandServer
{
TouchInterfacePrivate *TouchInterfacePrivate::get(TouchInterface *touch)
{
return touch->d.data();
}
TouchInterfacePrivate::TouchInterfacePrivate(TouchInterface *q, SeatInterface *seat)
: q(q)
, seat(seat)
{
}
void TouchInterfacePrivate::touch_release(Resource *resource)
{
wl_resource_destroy(resource->handle);
}
QList<TouchInterfacePrivate::Resource *> TouchInterfacePrivate::touchesForClient(ClientConnection *client) const
{
return resourceMap().values(client->client());
}
TouchInterface::TouchInterface(SeatInterface *seat)
: d(new TouchInterfacePrivate(this, seat))
{
}
TouchInterface::~TouchInterface()
{
}
SurfaceInterface *TouchInterface::focusedSurface() const
{
return d->focusedSurface;
}
void TouchInterface::setFocusedSurface(SurfaceInterface *surface)
{
d->focusedSurface = surface;
}
void TouchInterface::sendCancel()
{
if (!d->focusedSurface) {
return;
}
const auto touchResources = d->touchesForClient(d->focusedSurface->client());
for (TouchInterfacePrivate::Resource *resource : touchResources) {
d->send_cancel(resource->handle);
}
}
void TouchInterface::sendFrame()
{
if (!d->focusedSurface) {
return;
}
const auto touchResources = d->touchesForClient(d->focusedSurface->client());
for (TouchInterfacePrivate::Resource *resource : touchResources) {
d->send_frame(resource->handle);
}
}
void TouchInterface::sendMotion(qint32 id, const QPointF &localPos)
{
if (!d->focusedSurface) {
return;
}
QPointF pos = d->focusedSurface->toSurfaceLocal(localPos);
const auto touchResources = d->touchesForClient(d->focusedSurface->client());
for (TouchInterfacePrivate::Resource *resource : touchResources) {
d->send_motion(resource->handle, d->seat->timestamp(), id, wl_fixed_from_double(pos.x()), wl_fixed_from_double(pos.y()));
}
}
void TouchInterface::sendUp(qint32 id, quint32 serial)
{
if (!d->focusedSurface) {
return;
}
const auto touchResources = d->touchesForClient(d->focusedSurface->client());
for (TouchInterfacePrivate::Resource *resource : touchResources) {
d->send_up(resource->handle, serial, d->seat->timestamp(), id);
}
}
void TouchInterface::sendDown(qint32 id, quint32 serial, const QPointF &localPos)
{
if (!d->focusedSurface) {
return;
}
QPointF pos = d->focusedSurface->toSurfaceLocal(localPos);
const auto touchResources = d->touchesForClient(d->focusedSurface->client());
for (TouchInterfacePrivate::Resource *resource : touchResources) {
d->send_down(resource->handle,
serial,
d->seat->timestamp(),
d->focusedSurface->resource(),
id,
wl_fixed_from_double(pos.x()),
wl_fixed_from_double(pos.y()));
}
}
} // namespace KWaylandServer