File indexing completed on 2024-05-19 05:32:39

 /*
     SPDX-FileCopyrightText: 2016 Martin Gräßlin <mgraesslin@kde.org>
     SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "pointerconstraints_v1.h"
 #include "display.h"
 #include "pointer.h"
 #include "pointerconstraints_v1_p.h"
 #include "region_p.h"
 #include "surface_p.h"
 
 namespace KWin
 {
 static const int s_version = 1;
 
 static QRegion mapScaleOverride(const QRegion &region, qreal scaleOverride)
 {
     QRegion out;
     for (const QRect &rect : region) {
         out += QRect(rect.topLeft() / scaleOverride, rect.size() / scaleOverride);
     }
     return out;
 }
 
 PointerConstraintsV1InterfacePrivate::PointerConstraintsV1InterfacePrivate(Display *display)
     : QtWaylandServer::zwp_pointer_constraints_v1(*display, s_version)
 {
 }
 
 static QRegion regionFromResource(::wl_resource *resource)
 {
     const RegionInterface *region = RegionInterface::get(resource);
     return region ? region->region() : QRegion();
 }
 
 void PointerConstraintsV1InterfacePrivate::zwp_pointer_constraints_v1_lock_pointer(Resource *resource,
                                                                                    uint32_t id,
                                                                                    ::wl_resource *surface_resource,
                                                                                    ::wl_resource *pointer_resource,
                                                                                    ::wl_resource *region_resource,
                                                                                    uint32_t lifetime)
 {
     PointerInterface *pointer = PointerInterface::get(pointer_resource);
     if (!pointer) {
         wl_resource_post_error(resource->handle, WL_DISPLAY_ERROR_INVALID_OBJECT, "invalid pointer");
         return;
     }
 
     SurfaceInterface *surface = SurfaceInterface::get(surface_resource);
     if (!surface) {
         wl_resource_post_error(resource->handle, WL_DISPLAY_ERROR_INVALID_OBJECT, "invalid surface");
         return;
     }
 
     if (surface->lockedPointer() || surface->confinedPointer()) {
         wl_resource_post_error(resource->handle, error_already_constrained, "the surface is already constrained");
         return;
     }
 
     if (lifetime != lifetime_oneshot && lifetime != lifetime_persistent) {
         wl_resource_post_error(resource->handle, WL_DISPLAY_ERROR_INVALID_OBJECT, "unknown lifetime %d", lifetime);
         return;
     }
 
     wl_resource *lockedPointerResource = wl_resource_create(resource->client(), &zwp_locked_pointer_v1_interface, resource->version(), id);
     if (!lockedPointerResource) {
         wl_resource_post_no_memory(resource->handle);
         return;
     }
 
     new LockedPointerV1Interface(surface, LockedPointerV1Interface::LifeTime(lifetime), regionFromResource(region_resource), lockedPointerResource);
 }
 
 void PointerConstraintsV1InterfacePrivate::zwp_pointer_constraints_v1_confine_pointer(Resource *resource,
                                                                                       uint32_t id,
                                                                                       ::wl_resource *surface_resource,
                                                                                       ::wl_resource *pointer_resource,
                                                                                       ::wl_resource *region_resource,
                                                                                       uint32_t lifetime)
 {
     PointerInterface *pointer = PointerInterface::get(pointer_resource);
     if (!pointer) {
         wl_resource_post_error(resource->handle, WL_DISPLAY_ERROR_INVALID_OBJECT, "invalid pointer");
         return;
     }
 
     SurfaceInterface *surface = SurfaceInterface::get(surface_resource);
     if (!surface) {
         wl_resource_post_error(resource->handle, WL_DISPLAY_ERROR_INVALID_OBJECT, "invalid surface");
         return;
     }
 
     if (lifetime != lifetime_oneshot && lifetime != lifetime_persistent) {
         wl_resource_post_error(resource->handle, WL_DISPLAY_ERROR_INVALID_OBJECT, "unknown lifetime %d", lifetime);
         return;
     }
 
     if (surface->lockedPointer() || surface->confinedPointer()) {
         wl_resource_post_error(resource->handle, error_already_constrained, "the surface is already constrained");
         return;
     }
 
     wl_resource *confinedPointerResource = wl_resource_create(resource->client(), &zwp_confined_pointer_v1_interface, resource->version(), id);
     if (!confinedPointerResource) {
         wl_resource_post_no_memory(resource->handle);
         return;
     }
 
     new ConfinedPointerV1Interface(surface, ConfinedPointerV1Interface::LifeTime(lifetime), regionFromResource(region_resource), confinedPointerResource);
 }
 
 void PointerConstraintsV1InterfacePrivate::zwp_pointer_constraints_v1_destroy(Resource *resource)
 {
     wl_resource_destroy(resource->handle);
 }
 
 PointerConstraintsV1Interface::PointerConstraintsV1Interface(Display *display, QObject *parent)
     : QObject(parent)
     , d(new PointerConstraintsV1InterfacePrivate(display))
 {
 }
 
 PointerConstraintsV1Interface::~PointerConstraintsV1Interface()
 {
 }
 
 LockedPointerV1InterfacePrivate *LockedPointerV1InterfacePrivate::get(LockedPointerV1Interface *q)
 {
     return q->d.get();
 }
 
 LockedPointerV1InterfacePrivate::LockedPointerV1InterfacePrivate(LockedPointerV1Interface *q,
                                                                  SurfaceInterface *surface,
                                                                  LockedPointerV1Interface::LifeTime lifeTime,
                                                                  const QRegion &region,
                                                                  ::wl_resource *resource)
     : QtWaylandServer::zwp_locked_pointer_v1(resource)
     , SurfaceExtension(surface)
     , q(q)
     , surface(surface)
     , lifeTime(lifeTime)
 {
     pending.region = region;
 
     apply(&pending);
 
     pending = LockedPointerV1Commit{};
 }
 
 void LockedPointerV1InterfacePrivate::apply(LockedPointerV1Commit *commit)
 {
     const QRegion oldRegion = effectiveRegion;
     const QPointF oldHint = hint;
 
     if (commit->region.has_value()) {
         region = mapScaleOverride(commit->region.value(), surface->scaleOverride());
     }
     if (commit->hint.has_value()) {
         hint = commit->hint.value() / surface->scaleOverride();
     }
 
     effectiveRegion = surface->input();
     if (!region.isEmpty()) {
         effectiveRegion &= region;
     }
 
     if (oldRegion != effectiveRegion) {
         Q_EMIT q->regionChanged();
     }
     if (oldHint != hint) {
         Q_EMIT q->cursorPositionHintChanged();
     }
 }
 
 void LockedPointerV1InterfacePrivate::zwp_locked_pointer_v1_destroy_resource(Resource *resource)
 {
     Q_EMIT q->aboutToBeDestroyed();
     delete q;
 }
 
 void LockedPointerV1InterfacePrivate::zwp_locked_pointer_v1_destroy(Resource *resource)
 {
     wl_resource_destroy(resource->handle);
 }
 
 void LockedPointerV1InterfacePrivate::zwp_locked_pointer_v1_set_cursor_position_hint(Resource *resource, wl_fixed_t surface_x, wl_fixed_t surface_y)
 {
     pending.hint = QPointF(wl_fixed_to_double(surface_x), wl_fixed_to_double(surface_y));
 }
 
 void LockedPointerV1InterfacePrivate::zwp_locked_pointer_v1_set_region(Resource *resource, ::wl_resource *region_resource)
 {
     pending.region = regionFromResource(region_resource);
 }
 
 LockedPointerV1Interface::LockedPointerV1Interface(SurfaceInterface *surface,
                                                    LifeTime lifeTime,
                                                    const QRegion &region,
                                                    ::wl_resource *resource)
     : d(new LockedPointerV1InterfacePrivate(this, surface, lifeTime, region, resource))
 {
     SurfaceInterfacePrivate::get(surface)->installPointerConstraint(this);
 }
 
 LockedPointerV1Interface::~LockedPointerV1Interface()
 {
 }
 
 LockedPointerV1Interface::LifeTime LockedPointerV1Interface::lifeTime() const
 {
     return d->lifeTime;
 }
 
 QRegion LockedPointerV1Interface::region() const
 {
     return d->effectiveRegion;
 }
 
 QPointF LockedPointerV1Interface::cursorPositionHint() const
 {
     return d->hint;
 }
 
 bool LockedPointerV1Interface::isLocked() const
 {
     return d->isLocked;
 }
 
 void LockedPointerV1Interface::setLocked(bool locked)
 {
     if (d->isLocked == locked) {
         return;
     }
     if (!locked) {
         d->hint = QPointF(-1, -1);
     }
     d->isLocked = locked;
     if (d->isLocked) {
         d->send_locked();
     } else {
         d->send_unlocked();
     }
     Q_EMIT lockedChanged();
 }
 
 ConfinedPointerV1InterfacePrivate *ConfinedPointerV1InterfacePrivate::get(ConfinedPointerV1Interface *q)
 {
     return q->d.get();
 }
 
 ConfinedPointerV1InterfacePrivate::ConfinedPointerV1InterfacePrivate(ConfinedPointerV1Interface *q,
                                                                      SurfaceInterface *surface,
                                                                      ConfinedPointerV1Interface::LifeTime lifeTime,
                                                                      const QRegion &region,
                                                                      ::wl_resource *resource)
     : QtWaylandServer::zwp_confined_pointer_v1(resource)
     , SurfaceExtension(surface)
     , q(q)
     , surface(surface)
     , lifeTime(lifeTime)
 {
     pending.region = region;
 
     apply(&pending);
 
     pending = ConfinedPointerV1Commit{};
 }
 
 void ConfinedPointerV1InterfacePrivate::apply(ConfinedPointerV1Commit *commit)
 {
     const QRegion oldRegion = effectiveRegion;
 
     if (commit->region.has_value()) {
         region = mapScaleOverride(commit->region.value(), surface->scaleOverride());
     }
 
     effectiveRegion = surface->input();
     if (!region.isEmpty()) {
         effectiveRegion &= region;
     }
 
     if (oldRegion != effectiveRegion) {
         Q_EMIT q->regionChanged();
     }
 }
 
 void ConfinedPointerV1InterfacePrivate::zwp_confined_pointer_v1_destroy_resource(Resource *resource)
 {
     delete q;
 }
 
 void ConfinedPointerV1InterfacePrivate::zwp_confined_pointer_v1_destroy(Resource *resource)
 {
     wl_resource_destroy(resource->handle);
 }
 
 void ConfinedPointerV1InterfacePrivate::zwp_confined_pointer_v1_set_region(Resource *resource, ::wl_resource *region_resource)
 {
     pending.region = regionFromResource(region_resource);
 }
 
 ConfinedPointerV1Interface::ConfinedPointerV1Interface(SurfaceInterface *surface,
                                                        LifeTime lifeTime,
                                                        const QRegion &region,
                                                        ::wl_resource *resource)
     : d(new ConfinedPointerV1InterfacePrivate(this, surface, lifeTime, region, resource))
 {
     SurfaceInterfacePrivate::get(surface)->installPointerConstraint(this);
 }
 
 ConfinedPointerV1Interface::~ConfinedPointerV1Interface()
 {
 }
 
 ConfinedPointerV1Interface::LifeTime ConfinedPointerV1Interface::lifeTime() const
 {
     return d->lifeTime;
 }
 
 QRegion ConfinedPointerV1Interface::region() const
 {
     return d->effectiveRegion;
 }
 
 bool ConfinedPointerV1Interface::isConfined() const
 {
     return d->isConfined;
 }
 
 void ConfinedPointerV1Interface::setConfined(bool confined)
 {
     if (d->isConfined == confined) {
         return;
     }
     d->isConfined = confined;
     if (d->isConfined) {
         d->send_confined();
     } else {
         d->send_unconfined();
     }
     Q_EMIT confinedChanged();
 }
 
 } // namespace KWin
 
 #include "moc_pointerconstraints_v1.cpp"