1 files changed, 300 insertions, 0 deletions
diff --git a/src/compositor/extensions/qwaylandxdgshellintegration.cpp b/src/compositor/extensions/qwaylandxdgshellintegration.cpp
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+++ b/src/compositor/extensions/qwaylandxdgshellintegration.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwaylandxdgshellintegration_p.h"
+
+#include <QtWaylandCompositor/QWaylandXdgSurface>
+#include <QtWaylandCompositor/QWaylandCompositor>
+#include <QtWaylandCompositor/QWaylandSeat>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWayland {
+
+static void handlePopupCreated(QWaylandQuickShellSurfaceItem *parentItem, QWaylandXdgPopup *popup)
+{
+    if (parentItem->shellSurface() == popup->parentXdgSurface())
+        QWaylandQuickShellSurfaceItemPrivate::get(parentItem)->maybeCreateAutoPopup(popup->xdgSurface());
+}
+
+XdgToplevelIntegration::XdgToplevelIntegration(QWaylandQuickShellSurfaceItem *item)
+    : QWaylandQuickShellIntegration(item)
+    , m_item(item)
+    , m_xdgSurface(qobject_cast<QWaylandXdgSurface *>(item->shellSurface()))
+    , m_toplevel(m_xdgSurface->toplevel())
+    , grabberState(GrabberState::Default)
+{
+    Q_ASSERT(m_toplevel);
+
+    m_item->setSurface(m_xdgSurface->surface());
+
+    connect(m_toplevel, &QWaylandXdgToplevel::startMove, this, &XdgToplevelIntegration::handleStartMove);
+    connect(m_toplevel, &QWaylandXdgToplevel::startResize, this, &XdgToplevelIntegration::handleStartResize);
+    connect(m_toplevel, &QWaylandXdgToplevel::setMaximized, this, &XdgToplevelIntegration::handleSetMaximized);
+    connect(m_toplevel, &QWaylandXdgToplevel::unsetMaximized, this, &XdgToplevelIntegration::handleUnsetMaximized);
+    connect(m_toplevel, &QWaylandXdgToplevel::maximizedChanged, this, &XdgToplevelIntegration::handleMaximizedChanged);
+    connect(m_toplevel, &QWaylandXdgToplevel::setFullscreen, this, &XdgToplevelIntegration::handleSetFullscreen);
+    connect(m_toplevel, &QWaylandXdgToplevel::unsetFullscreen, this, &XdgToplevelIntegration::handleUnsetFullscreen);
+    connect(m_toplevel, &QWaylandXdgToplevel::fullscreenChanged, this, &XdgToplevelIntegration::handleFullscreenChanged);
+    connect(m_toplevel, &QWaylandXdgToplevel::activatedChanged, this, &XdgToplevelIntegration::handleActivatedChanged);
+    connect(m_xdgSurface->shell(), &QWaylandXdgShell::popupCreated, this, [item](QWaylandXdgPopup *popup, QWaylandXdgSurface *){
+        handlePopupCreated(item, popup);
+    });
+    connect(m_xdgSurface->surface(), &QWaylandSurface::sizeChanged, this, &XdgToplevelIntegration::handleSurfaceSizeChanged);
+    connect(m_toplevel, &QObject::destroyed, this, &XdgToplevelIntegration::handleToplevelDestroyed);
+}
+
+bool XdgToplevelIntegration::mouseMoveEvent(QMouseEvent *event)
+{
+    if (grabberState == GrabberState::Resize) {
+        Q_ASSERT(resizeState.seat == m_item->compositor()->seatFor(event));
+        if (!resizeState.initialized) {
+            resizeState.initialMousePos = event->windowPos();
+            resizeState.initialized = true;
+            return true;
+        }
+        QPointF delta = m_item->mapToSurface(event->windowPos() - resizeState.initialMousePos);
+        QSize newSize = m_toplevel->sizeForResize(resizeState.initialWindowSize, delta, resizeState.resizeEdges);
+        m_toplevel->sendResizing(newSize);
+    } else if (grabberState == GrabberState::Move) {
+        Q_ASSERT(moveState.seat == m_item->compositor()->seatFor(event));
+        QQuickItem *moveItem = m_item->moveItem();
+        if (!moveState.initialized) {
+            moveState.initialOffset = moveItem->mapFromItem(nullptr, event->windowPos());
+            moveState.initialized = true;
+            return true;
+        }
+        if (!moveItem->parentItem())
+            return true;
+        QPointF parentPos = moveItem->parentItem()->mapFromItem(nullptr, event->windowPos());
+        moveItem->setPosition(parentPos - moveState.initialOffset);
+    }
+    return false;
+}
+
+bool XdgToplevelIntegration::mouseReleaseEvent(QMouseEvent *event)
+{
+    Q_UNUSED(event);
+
+    if (grabberState == GrabberState::Move) {
+        grabberState = GrabberState::Default;
+        return true;
+    }
+    return false;
+}
+
+void XdgToplevelIntegration::handleStartMove(QWaylandSeat *seat)
+{
+    grabberState = GrabberState::Move;
+    moveState.seat = seat;
+    moveState.initialized = false;
+}
+
+void XdgToplevelIntegration::handleStartResize(QWaylandSeat *seat, Qt::Edges edges)
+{
+    grabberState = GrabberState::Resize;
+    resizeState.seat = seat;
+    resizeState.resizeEdges = edges;
+    resizeState.initialWindowSize = m_xdgSurface->windowGeometry().size();
+    resizeState.initialPosition = m_item->moveItem()->position();
+    resizeState.initialSurfaceSize = m_item->surface()->size();
+    resizeState.initialized = false;
+}
+
+void XdgToplevelIntegration::handleSetMaximized()
+{
+    if (!m_item->view()->isPrimary())
+        return;
+
+    QVector<QWaylandXdgToplevel::State> states = m_toplevel->states();
+
+    if (!states.contains(QWaylandXdgToplevel::State::FullscreenState) && !states.contains(QWaylandXdgToplevel::State::MaximizedState)) {
+        windowedGeometry.initialWindowSize = m_xdgSurface->windowGeometry().size();
+        windowedGeometry.initialPosition = m_item->moveItem()->position();
+    }
+
+    // Any prior output-resize handlers are irrelevant at this point.
+    disconnect(nonwindowedState.sizeChangedConnection);
+    nonwindowedState.output = m_item->view()->output();
+    nonwindowedState.sizeChangedConnection = connect(nonwindowedState.output, &QWaylandOutput::availableGeometryChanged, this, &XdgToplevelIntegration::handleMaximizedSizeChanged);
+    handleMaximizedSizeChanged();
+}
+
+void XdgToplevelIntegration::handleMaximizedSizeChanged()
+{
+    // Insurance against handleToplevelDestroyed() not managing to disconnect this
+    // handler in time.
+    if (m_toplevel == nullptr)
+        return;
+
+    m_toplevel->sendMaximized(nonwindowedState.output->availableGeometry().size() / nonwindowedState.output->scaleFactor());
+}
+
+void XdgToplevelIntegration::handleUnsetMaximized()
+{
+    if (!m_item->view()->isPrimary())
+        return;
+
+    // If no prior windowed size was recorded, send a 0x0 configure event
+    // to allow the client to choose its preferred size.
+    if (windowedGeometry.initialWindowSize.isValid())
+        m_toplevel->sendUnmaximized(windowedGeometry.initialWindowSize);
+    else
+        m_toplevel->sendUnmaximized();
+}
+
+void XdgToplevelIntegration::handleMaximizedChanged()
+{
+    if (m_toplevel->maximized()) {
+        QWaylandOutput *output = m_item->view()->output();
+        m_item->moveItem()->setPosition(output->position() + output->availableGeometry().topLeft());
+    } else {
+        m_item->moveItem()->setPosition(windowedGeometry.initialPosition);
+    }
+}
+
+void XdgToplevelIntegration::handleSetFullscreen()
+{
+    if (!m_item->view()->isPrimary())
+        return;
+
+    QVector<QWaylandXdgToplevel::State> states = m_toplevel->states();
+
+    if (!states.contains(QWaylandXdgToplevel::State::FullscreenState) && !states.contains(QWaylandXdgToplevel::State::MaximizedState)) {
+        windowedGeometry.initialWindowSize = m_xdgSurface->windowGeometry().size();
+        windowedGeometry.initialPosition = m_item->moveItem()->position();
+    }
+
+    // Any prior output-resize handlers are irrelevant at this point.
+    disconnect(nonwindowedState.sizeChangedConnection);
+    nonwindowedState.output = m_item->view()->output();
+    nonwindowedState.sizeChangedConnection = connect(nonwindowedState.output, &QWaylandOutput::geometryChanged, this, &XdgToplevelIntegration::handleFullscreenSizeChanged);
+    handleFullscreenSizeChanged();
+}
+
+void XdgToplevelIntegration::handleFullscreenSizeChanged()
+{
+    // Insurance against handleToplevelDestroyed() not managing to disconnect this
+    // handler in time.
+    if (m_toplevel == nullptr)
+        return;
+
+    m_toplevel->sendFullscreen(nonwindowedState.output->geometry().size() / nonwindowedState.output->scaleFactor());
+}
+
+void XdgToplevelIntegration::handleUnsetFullscreen()
+{
+    if (!m_item->view()->isPrimary())
+        return;
+
+    // If no prior windowed size was recorded, send a 0x0 configure event
+    // to allow the client to choose its preferred size.
+    if (windowedGeometry.initialWindowSize.isValid())
+        m_toplevel->sendUnmaximized(windowedGeometry.initialWindowSize);
+    else
+        m_toplevel->sendUnmaximized();
+}
+
+void XdgToplevelIntegration::handleFullscreenChanged()
+{
+    if (m_toplevel->fullscreen()) {
+        QWaylandOutput *output = m_item->view()->output();
+        m_item->moveItem()->setPosition(output->position() + output->geometry().topLeft());
+    } else {
+        m_item->moveItem()->setPosition(windowedGeometry.initialPosition);
+    }
+}
+
+void XdgToplevelIntegration::handleActivatedChanged()
+{
+    if (m_toplevel->activated())
+        m_item->raise();
+}
+
+void XdgToplevelIntegration::handleSurfaceSizeChanged()
+{
+    if (grabberState == GrabberState::Resize) {
+        qreal x = resizeState.initialPosition.x();
+        qreal y = resizeState.initialPosition.y();
+        if (resizeState.resizeEdges & Qt::TopEdge)
+            y += resizeState.initialSurfaceSize.height() - m_item->surface()->size().height();
+
+        if (resizeState.resizeEdges & Qt::LeftEdge)
+            x += resizeState.initialSurfaceSize.width() - m_item->surface()->size().width();
+        m_item->moveItem()->setPosition(QPointF(x, y));
+    }
+}
+
+void XdgToplevelIntegration::handleToplevelDestroyed()
+{
+    // Disarm any handlers that might fire on the now-stale toplevel pointer
+    nonwindowedState.output = nullptr;
+    disconnect(nonwindowedState.sizeChangedConnection);
+}
+
+XdgPopupIntegration::XdgPopupIntegration(QWaylandQuickShellSurfaceItem *item)
+    : m_item(item)
+    , m_xdgSurface(qobject_cast<QWaylandXdgSurface *>(item->shellSurface()))
+    , m_popup(m_xdgSurface->popup())
+{
+    Q_ASSERT(m_popup);
+
+    m_item->setSurface(m_xdgSurface->surface());
+    handleGeometryChanged();
+
+    connect(m_popup, &QWaylandXdgPopup::configuredGeometryChanged, this, &XdgPopupIntegration::handleGeometryChanged);
+    connect(m_xdgSurface->shell(), &QWaylandXdgShell::popupCreated, this, [item](QWaylandXdgPopup *popup, QWaylandXdgSurface *){
+        handlePopupCreated(item, popup);
+    });
+}
+
+void XdgPopupIntegration::handleGeometryChanged()
+{
+    if (m_item->view()->output()) {
+        const QPoint windowOffset = m_popup->parentXdgSurface()->windowGeometry().topLeft();
+        const QPoint position = m_popup->unconstrainedPosition() + windowOffset;
+        //TODO: positioner size or other size...?
+        const float scaleFactor = m_item->view()->output()->scaleFactor();
+        //TODO check positioner constraints etc... sliding, flipping
+        m_item->moveItem()->setPosition(position * scaleFactor);
+    } else {
+        qWarning() << "XdgPopupIntegration popup item without output" << m_item;
+    }
+}
+
+}
+
+QT_END_NAMESPACE