Compositor API: Add xdg-shell stable

[ChangeLog][Compositor API] Added APIs for xdg-shell stable.

Code copied from the V6 implementation with suffixes and prefixes removed.
Otherwise a few minor edits, such as renaming xdg_shell to xdg_wm_base, and
handling the anchor and gravity edges no longer being bitfields.

Examples that used v6 have been updated to use stable instead, or, in some
cases, to support both.

Task-number: QTBUG-66784
Change-Id: Ia619b478a938fdcd9b47af8a8df2d7fcc4406204
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

1 files changed, 239 insertions, 0 deletions

diff --git a/src/compositor/extensions/qwaylandxdgshell_p.h b/src/compositor/extensions/qwaylandxdgshell_p.h
new file mode 100644
index 000000000..f45cb7f46
--- /dev/null
+++ b/src/compositor/extensions/qwaylandxdgshell_p.h
@@ -0,0 +1,239 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWAYLANDXDGSHELL_P_H
+#define QWAYLANDXDGSHELL_P_H
+
+#include <QtWaylandCompositor/private/qwaylandcompositorextension_p.h>
+#include <QtWaylandCompositor/private/qwayland-server-xdg-shell.h>
+
+#include <QtWaylandCompositor/QWaylandXdgShell>
+
+#include <QtCore/QSet>
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+QT_BEGIN_NAMESPACE
+
+struct Q_WAYLAND_COMPOSITOR_EXPORT QWaylandXdgPositionerData {
+    QSize size;
+    QRect anchorRect;
+    Qt::Edges anchorEdges = 0;
+    Qt::Edges gravityEdges = 0;
+    uint constraintAdjustments = XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_NONE;
+    QPoint offset;
+    QWaylandXdgPositionerData();
+    bool isComplete() const;
+    QPoint anchorPoint() const;
+    QPoint unconstrainedPosition() const;
+};
+
+class Q_WAYLAND_COMPOSITOR_EXPORT QWaylandXdgShellPrivate
+        : public QWaylandCompositorExtensionPrivate
+        , public QtWaylandServer::xdg_wm_base
+{
+    Q_DECLARE_PUBLIC(QWaylandXdgShell)
+public:
+    QWaylandXdgShellPrivate();
+    void ping(Resource *resource, uint32_t serial);
+    void registerXdgSurface(QWaylandXdgSurface *xdgSurface);
+    void unregisterXdgSurface(QWaylandXdgSurface *xdgSurface);
+    static QWaylandXdgShellPrivate *get(QWaylandXdgShell *xdgShell) { return xdgShell->d_func(); }
+    static Qt::Edges convertToEdges(uint xdgEdges);
+
+    QSet<uint32_t> m_pings;
+    QMultiMap<struct wl_client *, QWaylandXdgSurface *> m_xdgSurfaces;
+
+    QWaylandXdgSurface *xdgSurfaceFromSurface(QWaylandSurface *surface);
+
+protected:
+    void xdg_wm_base_destroy(Resource *resource) override;
+    void xdg_wm_base_create_positioner(Resource *resource, uint32_t id) override;
+    void xdg_wm_base_get_xdg_surface(Resource *resource, uint32_t id,
+                                     struct ::wl_resource *surface) override;
+    void xdg_wm_base_pong(Resource *resource, uint32_t serial) override;
+};
+
+class Q_WAYLAND_COMPOSITOR_EXPORT QWaylandXdgSurfacePrivate
+        : public QWaylandCompositorExtensionPrivate
+        , public QtWaylandServer::xdg_surface
+{
+    Q_DECLARE_PUBLIC(QWaylandXdgSurface)
+public:
+    QWaylandXdgSurfacePrivate();
+    void setWindowType(Qt::WindowType windowType);
+    void handleFocusLost();
+    void handleFocusReceived();
+    static QWaylandXdgSurfacePrivate *get(QWaylandXdgSurface *xdgSurface) { return xdgSurface->d_func(); }
+
+    QRect calculateFallbackWindowGeometry() const;
+    void updateFallbackWindowGeometry();
+
+private:
+    QWaylandXdgShell *m_xdgShell = nullptr;
+    QWaylandSurface *m_surface = nullptr;
+
+    QWaylandXdgToplevel *m_toplevel = nullptr;
+    QWaylandXdgPopup *m_popup = nullptr;
+    QRect m_windowGeometry;
+    bool m_unsetWindowGeometry = true;
+    QMargins m_windowMargins;
+    Qt::WindowType m_windowType = Qt::WindowType::Window;
+
+    void xdg_surface_destroy_resource(Resource *resource) override;
+    void xdg_surface_destroy(Resource *resource) override;
+    void xdg_surface_get_toplevel(Resource *resource, uint32_t id) override;
+    void xdg_surface_get_popup(Resource *resource, uint32_t id, struct ::wl_resource *parent, struct ::wl_resource *positioner) override;
+    void xdg_surface_ack_configure(Resource *resource, uint32_t serial) override;
+    void xdg_surface_set_window_geometry(Resource *resource, int32_t x, int32_t y, int32_t width, int32_t height) override;
+};
+
+class Q_WAYLAND_COMPOSITOR_EXPORT QWaylandXdgToplevelPrivate : public QObjectPrivate, public QtWaylandServer::xdg_toplevel
+{
+    Q_DECLARE_PUBLIC(QWaylandXdgToplevel)
+public:
+    struct ConfigureEvent {
+        QVector<QWaylandXdgToplevel::State> states;
+        QSize size = {0, 0};
+        uint serial = 0;
+    };
+
+    QWaylandXdgToplevelPrivate(QWaylandXdgSurface *xdgSurface, const QWaylandResource& resource);
+    ConfigureEvent lastSentConfigure() const { return m_pendingConfigures.empty() ? m_lastAckedConfigure : m_pendingConfigures.last(); }
+    void handleAckConfigure(uint serial); //TODO: move?
+    void handleFocusLost();
+    void handleFocusReceived();
+
+    static QWaylandXdgToplevelPrivate *get(QWaylandXdgToplevel *toplevel) { return toplevel->d_func(); }
+
+protected:
+
+    void xdg_toplevel_destroy_resource(Resource *resource) override;
+
+    void xdg_toplevel_destroy(Resource *resource) override;
+    void xdg_toplevel_set_parent(Resource *resource, struct ::wl_resource *parent) override;
+    void xdg_toplevel_set_title(Resource *resource, const QString &title) override;
+    void xdg_toplevel_set_app_id(Resource *resource, const QString &app_id) override;
+    void xdg_toplevel_show_window_menu(Resource *resource, struct ::wl_resource *seat, uint32_t serial, int32_t x, int32_t y) override;
+    void xdg_toplevel_move(Resource *resource, struct ::wl_resource *seatResource, uint32_t serial) override;
+    void xdg_toplevel_resize(Resource *resource, struct ::wl_resource *seat, uint32_t serial, uint32_t edges) override;
+    void xdg_toplevel_set_max_size(Resource *resource, int32_t width, int32_t height) override;
+    void xdg_toplevel_set_min_size(Resource *resource, int32_t width, int32_t height) override;
+    void xdg_toplevel_set_maximized(Resource *resource) override;
+    void xdg_toplevel_unset_maximized(Resource *resource) override;
+    void xdg_toplevel_set_fullscreen(Resource *resource, struct ::wl_resource *output) override;
+    void xdg_toplevel_unset_fullscreen(Resource *resource) override;
+    void xdg_toplevel_set_minimized(Resource *resource) override;
+
+public:
+    QWaylandXdgSurface *m_xdgSurface = nullptr;
+    QWaylandXdgToplevel *m_parentToplevel = nullptr;
+    QList<ConfigureEvent> m_pendingConfigures;
+    ConfigureEvent m_lastAckedConfigure;
+    QString m_title;
+    QString m_appId;
+    QSize m_maxSize;
+    QSize m_minSize;
+
+    static QWaylandSurfaceRole s_role;
+};
+
+class Q_WAYLAND_COMPOSITOR_EXPORT QWaylandXdgPopupPrivate : public QObjectPrivate, public QtWaylandServer::xdg_popup
+{
+    Q_DECLARE_PUBLIC(QWaylandXdgPopup)
+public:
+    struct ConfigureEvent {
+        QRect geometry;
+        uint serial;
+    };
+
+    QWaylandXdgPopupPrivate(QWaylandXdgSurface *xdgSurface, QWaylandXdgSurface *parentXdgSurface,
+                            QWaylandXdgPositioner *positioner, const QWaylandResource& resource);
+
+    void handleAckConfigure(uint serial);
+
+    static QWaylandXdgPopupPrivate *get(QWaylandXdgPopup *popup) { return popup->d_func(); }
+
+    static QWaylandSurfaceRole s_role;
+
+private:
+    uint sendConfigure(const QRect &geometry);
+
+protected:
+    void xdg_popup_destroy(Resource *resource) override;
+    void xdg_popup_grab(Resource *resource, struct ::wl_resource *seat, uint32_t serial) override;
+
+private:
+    QWaylandXdgSurface *m_xdgSurface = nullptr;
+    QWaylandXdgSurface *m_parentXdgSurface = nullptr;
+    QWaylandXdgPositionerData m_positionerData;
+    QRect m_geometry;
+    QList<ConfigureEvent> m_pendingConfigures;
+};
+
+class Q_WAYLAND_COMPOSITOR_EXPORT QWaylandXdgPositioner : public QtWaylandServer::xdg_positioner
+{
+public:
+    QWaylandXdgPositioner(const QWaylandResource& resource);
+    static QWaylandXdgPositioner *fromResource(wl_resource *resource);
+
+protected:
+    void xdg_positioner_destroy_resource(Resource *resource) override; //TODO: do something special here?
+
+    void xdg_positioner_destroy(Resource *resource) override;
+    void xdg_positioner_set_size(Resource *resource, int32_t width, int32_t height) override;
+    void xdg_positioner_set_anchor_rect(Resource *resource, int32_t x, int32_t y, int32_t width, int32_t height) override;
+    void xdg_positioner_set_anchor(Resource *resource, uint32_t anchor) override;
+    void xdg_positioner_set_gravity(Resource *resource, uint32_t gravity) override;
+    void xdg_positioner_set_constraint_adjustment(Resource *resource, uint32_t constraint_adjustment) override;
+    void xdg_positioner_set_offset(Resource *resource, int32_t x, int32_t y) override;
+
+public:
+    QWaylandXdgPositionerData m_data;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWAYLANDXDGSHELL_P_H