File indexing completed on 2024-05-19 05:32:37

 /*
     SPDX-FileCopyrightText: 2014 Martin Gräßlin <mgraesslin@kde.org>
     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 "output.h"
 #include "display.h"
 #include "display_p.h"
 #include "utils/resource.h"
 
 #include "core/output.h"
 
 #include "qwayland-server-wayland.h"
 
 #include <QList>
 #include <QPointer>
 #include <QTimer>
 
 #include <cmath>
 
 namespace KWin
 {
 static const int s_version = 4;
 
 class OutputInterfacePrivate : public QtWaylandServer::wl_output
 {
 public:
     explicit OutputInterfacePrivate(Display *display, OutputInterface *q, Output *handle);
 
     void sendScale(Resource *resource);
     void sendGeometry(Resource *resource);
     void sendMode(Resource *resource);
     void sendDone(Resource *resource);
 
     OutputInterface *q;
     QPointer<Display> display;
     QPointer<Output> handle;
     QSize physicalSize;
     QPoint globalPosition;
     QString manufacturer;
     QString model;
     int scale = 1;
     Output::SubPixel subPixel = Output::SubPixel::Unknown;
     OutputTransform transform = OutputTransform::Normal;
     QSize modeSize;
     int refreshRate = 0;
     QString name;
     QString description;
     QTimer doneTimer;
 
 private:
     void output_destroy_global() override;
     void output_bind_resource(Resource *resource) override;
     void output_release(Resource *resource) override;
 };
 
 OutputInterfacePrivate::OutputInterfacePrivate(Display *display, OutputInterface *q, Output *handle)
     : QtWaylandServer::wl_output(*display, s_version)
     , q(q)
     , display(display)
     , handle(handle)
 {
 }
 
 void OutputInterfacePrivate::sendMode(Resource *resource)
 {
     send_mode(resource->handle, mode_current, modeSize.width(), modeSize.height(), refreshRate);
 }
 
 void OutputInterfacePrivate::sendScale(Resource *resource)
 {
     if (resource->version() >= WL_OUTPUT_SCALE_SINCE_VERSION) {
         send_scale(resource->handle, scale);
     }
 }
 
 static quint32 kwaylandServerTransformToWaylandTransform(OutputTransform transform)
 {
     switch (transform.kind()) {
     case OutputTransform::Normal:
         return OutputInterfacePrivate::transform_normal;
     case OutputTransform::Rotate90:
         return OutputInterfacePrivate::transform_90;
     case OutputTransform::Rotate180:
         return OutputInterfacePrivate::transform_180;
     case OutputTransform::Rotate270:
         return OutputInterfacePrivate::transform_270;
     case OutputTransform::FlipX:
         return OutputInterfacePrivate::transform_flipped;
     case OutputTransform::FlipX90:
         return OutputInterfacePrivate::transform_flipped_90;
     case OutputTransform::FlipX180:
         return OutputInterfacePrivate::transform_flipped_180;
     case OutputTransform::FlipX270:
         return OutputInterfacePrivate::transform_flipped_270;
     default:
         Q_UNREACHABLE();
     }
 }
 
 static quint32 kwaylandServerSubPixelToWaylandSubPixel(Output::SubPixel subPixel)
 {
     switch (subPixel) {
     case Output::SubPixel::Unknown:
         return OutputInterfacePrivate::subpixel_unknown;
     case Output::SubPixel::None:
         return OutputInterfacePrivate::subpixel_none;
     case Output::SubPixel::Horizontal_RGB:
         return OutputInterfacePrivate::subpixel_horizontal_rgb;
     case Output::SubPixel::Horizontal_BGR:
         return OutputInterfacePrivate::subpixel_horizontal_bgr;
     case Output::SubPixel::Vertical_RGB:
         return OutputInterfacePrivate::subpixel_vertical_rgb;
     case Output::SubPixel::Vertical_BGR:
         return OutputInterfacePrivate::subpixel_vertical_bgr;
     default:
         Q_UNREACHABLE();
     }
 }
 
 void OutputInterfacePrivate::sendGeometry(Resource *resource)
 {
     send_geometry(resource->handle,
                   globalPosition.x(),
                   globalPosition.y(),
                   physicalSize.width(),
                   physicalSize.height(),
                   kwaylandServerSubPixelToWaylandSubPixel(subPixel),
                   manufacturer,
                   model,
                   kwaylandServerTransformToWaylandTransform(transform));
 }
 
 void OutputInterfacePrivate::sendDone(Resource *resource)
 {
     if (resource->version() >= WL_OUTPUT_DONE_SINCE_VERSION) {
         send_done(resource->handle);
     }
 }
 
 void OutputInterfacePrivate::output_destroy_global()
 {
     delete q;
 }
 
 void OutputInterfacePrivate::output_release(Resource *resource)
 {
     wl_resource_destroy(resource->handle);
 }
 
 void OutputInterfacePrivate::output_bind_resource(Resource *resource)
 {
     if (isGlobalRemoved()) {
         return; // We are waiting for the wl_output global to be destroyed.
     }
 
     if (resource->version() >= WL_OUTPUT_NAME_SINCE_VERSION) {
         send_name(resource->handle, name);
     }
     if (resource->version() >= WL_OUTPUT_DESCRIPTION_SINCE_VERSION) {
         send_description(resource->handle, description);
     }
 
     sendMode(resource);
     sendScale(resource);
     sendGeometry(resource);
     sendDone(resource);
 
     Q_EMIT q->bound(display->getConnection(resource->client()), resource->handle);
 }
 
 OutputInterface::OutputInterface(Display *display, Output *handle, QObject *parent)
     : QObject(parent)
     , d(new OutputInterfacePrivate(display, this, handle))
 {
     DisplayPrivate *displayPrivate = DisplayPrivate::get(display);
     displayPrivate->outputs.append(this);
 
     // Delay the done event to batch property updates.
     d->doneTimer.setSingleShot(true);
     d->doneTimer.setInterval(0);
     connect(&d->doneTimer, &QTimer::timeout, this, [this]() {
         const auto resources = d->resourceMap();
         for (const auto &resource : resources) {
             d->sendDone(resource);
         }
     });
 
     d->name = handle->name();
     d->description = handle->description();
     d->transform = handle->transform();
     d->manufacturer = handle->manufacturer();
     d->model = handle->model();
     d->physicalSize = handle->physicalSize();
     d->globalPosition = handle->geometry().topLeft();
     d->scale = std::ceil(handle->scale());
     d->modeSize = handle->modeSize();
     d->refreshRate = handle->refreshRate();
     d->subPixel = handle->subPixel();
 
     connect(handle, &Output::geometryChanged, this, [this]() {
         const QPoint position = d->handle->geometry().topLeft();
         if (d->globalPosition != position) {
             d->globalPosition = position;
             const auto resources = d->resourceMap();
             for (const auto &resource : resources) {
                 d->sendGeometry(resource);
             }
             scheduleDone();
         }
     });
 
     connect(handle, &Output::scaleChanged, this, [this]() {
         const int scale = std::ceil(d->handle->scale());
         if (d->scale != scale) {
             d->scale = scale;
             const auto resources = d->resourceMap();
             for (const auto &resource : resources) {
                 d->sendScale(resource);
             }
             scheduleDone();
         }
     });
 
     connect(handle, &Output::transformChanged, this, [this]() {
         const OutputTransform transform = d->handle->transform();
         if (d->transform != transform) {
             d->transform = transform;
             const auto resources = d->resourceMap();
             for (const auto &resource : resources) {
                 d->sendGeometry(resource);
             }
             scheduleDone();
         }
     });
 
     connect(handle, &Output::currentModeChanged, this, [this]() {
         const QSize size = d->handle->modeSize();
         const int refreshRate = d->handle->refreshRate();
         if (d->modeSize != size || d->refreshRate != refreshRate) {
             d->modeSize = size;
             d->refreshRate = refreshRate;
             const auto resources = d->resourceMap();
             for (const auto &resource : resources) {
                 d->sendMode(resource);
             }
             scheduleDone();
         }
     });
 }
 
 OutputInterface::~OutputInterface()
 {
     remove();
 }
 
 Display *OutputInterface::display() const
 {
     return d->display;
 }
 
 Output *OutputInterface::handle() const
 {
     return d->handle;
 }
 
 bool OutputInterface::isRemoved() const
 {
     return d->isGlobalRemoved();
 }
 
 void OutputInterface::remove()
 {
     if (d->isGlobalRemoved()) {
         return;
     }
 
     d->doneTimer.stop();
     if (d->handle) {
         disconnect(d->handle, nullptr, this, nullptr);
     }
 
     if (d->display) {
         DisplayPrivate *displayPrivate = DisplayPrivate::get(d->display);
         displayPrivate->outputs.removeOne(this);
     }
 
     Q_EMIT removed();
     d->globalRemove();
 }
 
 QList<wl_resource *> OutputInterface::clientResources(wl_client *client) const
 {
     const auto outputResources = d->resourceMap().values(client);
     QList<wl_resource *> ret;
     ret.reserve(outputResources.count());
 
     for (OutputInterfacePrivate::Resource *resource : outputResources) {
         ret.append(resource->handle);
     }
 
     return ret;
 }
 
 void OutputInterface::scheduleDone()
 {
     if (!d->isGlobalRemoved()) {
         d->doneTimer.start();
     }
 }
 
 void OutputInterface::done(wl_client *client)
 {
     if (!d->isGlobalRemoved()) {
         d->sendDone(d->resourceMap().value(client));
     }
 }
 
 OutputInterface *OutputInterface::get(wl_resource *native)
 {
     if (auto outputPrivate = resource_cast<OutputInterfacePrivate *>(native)) {
         return outputPrivate->q;
     }
     return nullptr;
 }
 
 } // namespace KWin
 
 #include "wayland/moc_output.cpp"