217 lines
7.7 KiB
C++
217 lines
7.7 KiB
C++
/*
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SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "layershellv1integration.h"
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#include "abstract_wayland_output.h"
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#include "layershellv1client.h"
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#include "platform.h"
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#include "screens.h"
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#include "wayland_server.h"
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#include "workspace.h"
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#include <KWaylandServer/display.h>
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#include <KWaylandServer/layershell_v1_interface.h>
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#include <QTimer>
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using namespace KWaylandServer;
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namespace KWin
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{
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static const Qt::Edges AnchorHorizontal = Qt::LeftEdge | Qt::RightEdge;
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static const Qt::Edges AnchorVertical = Qt::TopEdge | Qt::BottomEdge;
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LayerShellV1Integration::LayerShellV1Integration(QObject *parent)
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: WaylandShellIntegration(parent)
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{
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LayerShellV1Interface *shell = new LayerShellV1Interface(waylandServer()->display(), this);
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connect(shell, &KWaylandServer::LayerShellV1Interface::surfaceCreated,
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this, &LayerShellV1Integration::createClient);
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m_rearrangeTimer = new QTimer(this);
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m_rearrangeTimer->setSingleShot(true);
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connect(m_rearrangeTimer, &QTimer::timeout, this, &LayerShellV1Integration::rearrange);
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}
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void LayerShellV1Integration::createClient(LayerSurfaceV1Interface *shellSurface)
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{
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AbstractOutput *output = waylandServer()->findOutput(shellSurface->output());
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if (!output) {
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output = kwinApp()->platform()->findOutput(screens()->current());
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}
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if (!output) {
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qCWarning(KWIN_CORE) << "Could not find any suitable output for a layer surface";
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shellSurface->sendClosed();
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return;
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}
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emit clientCreated(new LayerShellV1Client(shellSurface, output, this));
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}
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void LayerShellV1Integration::recreateClient(LayerSurfaceV1Interface *shellSurface)
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{
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destroyClient(shellSurface);
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createClient(shellSurface);
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}
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void LayerShellV1Integration::destroyClient(LayerSurfaceV1Interface *shellSurface)
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{
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const QList<AbstractClient *> clients = waylandServer()->clients();
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for (AbstractClient *client : clients) {
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LayerShellV1Client *layerShellClient = qobject_cast<LayerShellV1Client *>(client);
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if (layerShellClient && layerShellClient->shellSurface() == shellSurface) {
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layerShellClient->destroyClient();
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break;
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}
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}
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}
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static void adjustWorkArea(const LayerSurfaceV1Interface *shellSurface, QRect *workArea)
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{
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switch (shellSurface->exclusiveEdge()) {
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case Qt::LeftEdge:
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workArea->adjust(shellSurface->leftMargin() + shellSurface->exclusiveZone(), 0, 0, 0);
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break;
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case Qt::RightEdge:
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workArea->adjust(0, 0, -shellSurface->rightMargin() - shellSurface->exclusiveZone(), 0);
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break;
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case Qt::TopEdge:
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workArea->adjust(0, shellSurface->topMargin() + shellSurface->exclusiveZone(), 0, 0);
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break;
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case Qt::BottomEdge:
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workArea->adjust(0, 0, 0, -shellSurface->bottomMargin() - shellSurface->exclusiveZone());
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break;
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}
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}
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static void rearrangeLayer(const QList<LayerShellV1Client *> &clients, QRect *workArea,
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LayerSurfaceV1Interface::Layer layer, bool exclusive)
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{
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for (LayerShellV1Client *client : clients) {
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LayerSurfaceV1Interface *shellSurface = client->shellSurface();
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if (shellSurface->layer() != layer) {
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continue;
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}
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if (exclusive != (shellSurface->exclusiveZone() > 0)) {
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continue;
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}
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QRect bounds;
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if (shellSurface->exclusiveZone() == -1) {
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bounds = workspace()->clientArea(ScreenArea, client);
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} else {
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bounds = *workArea;
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}
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QRect geometry(QPoint(0, 0), shellSurface->desiredSize());
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if ((shellSurface->anchor() & AnchorHorizontal) && geometry.width() == 0) {
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geometry.setLeft(bounds.left());
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geometry.setWidth(bounds.width());
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} else if (shellSurface->anchor() & Qt::LeftEdge) {
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geometry.moveLeft(bounds.left());
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} else if (shellSurface->anchor() & Qt::RightEdge) {
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geometry.moveRight(bounds.right());
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} else {
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geometry.moveLeft(bounds.left() + (bounds.width() - geometry.width()) / 2);
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}
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if ((shellSurface->anchor() & AnchorVertical) && geometry.height() == 0) {
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geometry.setTop(bounds.top());
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geometry.setHeight(bounds.height());
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} else if (shellSurface->anchor() & Qt::TopEdge) {
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geometry.moveTop(bounds.top());
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} else if (shellSurface->anchor() & Qt::BottomEdge) {
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geometry.moveBottom(bounds.bottom());
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} else {
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geometry.moveTop(bounds.top() + (bounds.height() - geometry.height()) / 2);
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}
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if ((shellSurface->anchor() & AnchorHorizontal) == AnchorHorizontal) {
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geometry.adjust(shellSurface->leftMargin(), 0, -shellSurface->rightMargin(), 0);
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} else if (shellSurface->anchor() & Qt::LeftEdge) {
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geometry.translate(shellSurface->leftMargin(), 0);
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} else if (shellSurface->anchor() & Qt::RightEdge) {
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geometry.translate(-shellSurface->rightMargin(), 0);
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}
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if ((shellSurface->anchor() & AnchorVertical) == AnchorVertical) {
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geometry.adjust(0, shellSurface->topMargin(), 0, -shellSurface->bottomMargin());
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} else if (shellSurface->anchor() & Qt::TopEdge) {
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geometry.translate(0, shellSurface->topMargin());
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} else if (shellSurface->anchor() & Qt::BottomEdge) {
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geometry.translate(0, -shellSurface->bottomMargin());
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}
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if (geometry.isValid()) {
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client->setFrameGeometry(geometry);
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} else {
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qCWarning(KWIN_CORE) << "Closing a layer shell client due to invalid geometry";
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client->closeWindow();
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continue;
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}
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if (exclusive && shellSurface->exclusiveZone() > 0) {
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adjustWorkArea(shellSurface, workArea);
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}
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}
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}
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static QList<LayerShellV1Client *> clientsForOutput(AbstractOutput *output)
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{
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QList<LayerShellV1Client *> result;
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const QList<AbstractClient *> clients = waylandServer()->clients();
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for (AbstractClient *client : clients) {
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LayerShellV1Client *layerShellClient = qobject_cast<LayerShellV1Client *>(client);
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if (!layerShellClient || layerShellClient->output() != output) {
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continue;
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}
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if (layerShellClient->shellSurface()->isCommitted()) {
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result.append(layerShellClient);
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}
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}
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return result;
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}
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static void rearrangeOutput(AbstractOutput *output)
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{
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const QList<LayerShellV1Client *> clients = clientsForOutput(output);
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if (!clients.isEmpty()) {
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QRect workArea = output->geometry();
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rearrangeLayer(clients, &workArea, LayerSurfaceV1Interface::OverlayLayer, true);
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rearrangeLayer(clients, &workArea, LayerSurfaceV1Interface::TopLayer, true);
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rearrangeLayer(clients, &workArea, LayerSurfaceV1Interface::BottomLayer, true);
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rearrangeLayer(clients, &workArea, LayerSurfaceV1Interface::BackgroundLayer, true);
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rearrangeLayer(clients, &workArea, LayerSurfaceV1Interface::OverlayLayer, false);
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rearrangeLayer(clients, &workArea, LayerSurfaceV1Interface::TopLayer, false);
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rearrangeLayer(clients, &workArea, LayerSurfaceV1Interface::BottomLayer, false);
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rearrangeLayer(clients, &workArea, LayerSurfaceV1Interface::BackgroundLayer, false);
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}
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}
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void LayerShellV1Integration::rearrange()
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{
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m_rearrangeTimer->stop();
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const QVector<AbstractOutput *> outputs = kwinApp()->platform()->enabledOutputs();
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for (AbstractOutput *output : outputs) {
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rearrangeOutput(output);
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}
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workspace()->updateClientArea();
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}
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void LayerShellV1Integration::scheduleRearrange()
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{
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m_rearrangeTimer->start();
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}
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} // namespace KWin
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