/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 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 3.0 requirements will be
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****************************************************************************/

#ifndef QT_X11_P_H
#define QT_X11_P_H

//
//  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.
//

#include "QtGui/qwindowdefs.h"
#include "QtCore/qhash.h"
#include "QtCore/qlist.h"
#include "QtCore/qvariant.h"

// the following is necessary to work around breakage in many versions
// of XFree86's Xlib.h still in use
// ### which versions?
#if defined(_XLIB_H_) || defined(_X11_XLIB_H_) // crude hack, but...
#error "cannot include <X11/Xlib.h> before this file"
#endif

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <X11/Xatom.h>

#ifdef index
#  undef index
#endif
#ifdef rindex
#  undef rindex
#endif

#ifndef QT_NO_XSHAPE
#  include <X11/extensions/shape.h>
#endif // QT_NO_XSHAPE

#ifndef QT_NO_XINERAMA
#  include <X11/extensions/Xinerama.h>
#endif // QT_NO_XINERAMA

#ifndef QT_NO_XRANDR
#  include <X11/extensions/Xrandr.h>
#endif // QT_NO_XRANDR

#ifndef QT_NO_XRENDER
#  include <X11/extensions/Xrender.h>
#endif // QT_NO_XRENDER

#ifndef QT_NO_XSYNC
# include "X11/extensions/sync.h"
#endif

#ifndef QT_NO_XCURSOR
#include <X11/Xcursor/Xcursor.h>
#endif // QT_NO_XCURSOR

#ifndef QT_NO_XSHM
#  include <X11/extensions/XShm.h>
#endif // QT_NO_XSHM

#ifndef QT_NO_XINPUT
#  include <X11/extensions/XInput.h>
#endif // QT_NO_XINPUT

#ifndef QT_NO_XFIXES
#  include <X11/extensions/Xfixes.h>
#endif // QT_NO_XFIXES

#ifndef QT_NO_FONTCONFIG
#include <fontconfig/fontconfig.h>
#endif

QT_BEGIN_NAMESPACE

class QWidget;

struct QX11InfoData {
    uint ref;
    int screen;
    int dpiX;
    int dpiY;
    int depth;
    int cells;
    Colormap colormap;
    Visual *visual;
    bool defaultColormap;
    bool defaultVisual;
    int subpixel;
};

class QDrag;
struct QXdndDropTransaction
{
    Time timestamp;
    Window target;
    Window proxy_target;
    QWidget *targetWidget;
    QWidget *embedding_widget;
    QDrag *object;
};

class QMimeData;
struct QX11Data
{
    static Qt::KeyboardModifiers translateModifiers(int s);

    Window findClientWindow(Window, Atom, bool);

    // from qclipboard_x11.cpp
    bool clipboardWaitForEvent(Window win, int type, XEvent *event, int timeout, bool checkManager = false);
    bool clipboardReadProperty(Window win, Atom property, bool deleteProperty,
                            QByteArray *buffer, int *size, Atom *type, int *format);
    QByteArray clipboardReadIncrementalProperty(Window win, Atom property, int nbytes, bool nullterm);

    // from qdnd_x11.cpp
    bool dndEnable(QWidget* w, bool on);
    static void xdndSetup();
    void xdndHandleEnter(QWidget *, const XEvent *, bool);
    void xdndHandlePosition(QWidget *, const XEvent *, bool);
    void xdndHandleStatus(QWidget *, const XEvent *, bool);
    void xdndHandleLeave(QWidget *, const XEvent *, bool);
    void xdndHandleDrop(QWidget *, const XEvent *, bool);
    void xdndHandleFinished(QWidget *, const XEvent *, bool);
    void xdndHandleSelectionRequest(const XSelectionRequestEvent *);
    static bool xdndHandleBadwindow();
    QByteArray xdndAtomToString(Atom a);
    Atom xdndStringToAtom(const char *);

    QString xdndMimeAtomToString(Atom a);
    Atom xdndMimeStringToAtom(const QString &mimeType);
    QStringList xdndMimeFormatsForAtom(Atom a);
    bool xdndMimeDataForAtom(Atom a, QMimeData *mimeData, QByteArray *data, Atom *atomFormat, int *dataFormat);
    QList<Atom> xdndMimeAtomsForFormat(const QString &format);
    QVariant xdndMimeConvertToFormat(Atom a, const QByteArray &data, const QString &format, QVariant::Type requestedType, const QByteArray &encoding);
    Atom xdndMimeAtomForFormat(const QString &format, QVariant::Type requestedType, const QList<Atom> &atoms, QByteArray *requestedEncoding);

    QList<QXdndDropTransaction> dndDropTransactions;

    // from qmotifdnd_x11.cpp
    void motifdndHandle(QWidget *, const XEvent *, bool);
    void motifdndEnable(QWidget *, bool);
    QVariant motifdndObtainData(const char *format);
    QByteArray motifdndFormat(int n);
    bool motifdnd_active;

    Display *display;
    char *displayName;
    bool foreignDisplay;
    // current focus model
    enum {
        FM_Unknown = -1,
        FM_Other = 0,
        FM_PointerRoot = 1
    };
    int focus_model;

    // true if Qt is compiled w/ RANDR support and RANDR is supported on the connected Display
    bool use_xrandr;
    int xrandr_major;
    int xrandr_eventbase;
    int xrandr_errorbase;

    // true if Qt is compiled w/ RENDER support and RENDER is supported on the connected Display
    bool use_xrender;
    int xrender_major;
    int xrender_version;

    // true if Qt is compiled w/ XFIXES support and XFIXES is supported on the connected Display
    bool use_xfixes;
    int xfixes_major;
    int xfixes_eventbase;
    int xfixes_errorbase;

    // true if Qt is compiled w/ MIT-SHM support and MIT-SHM is supported on the connected Display
    bool use_mitshm;
    bool use_mitshm_pixmaps;
    int mitshm_major;

    // true if Qt is compiled w/ INPUT support and INPUT is supported on the connected Display
    bool use_xinput;
    int xinput_major;
    int xinput_eventbase;
    int xinput_errorbase;

    QList<QWidget *> deferred_map;
    struct ScrollInProgress {
        long id;
        QWidget* scrolled_widget;
        int dx, dy;
    };
    long sip_serial;
    QList<ScrollInProgress> sip_list;

    // window managers list of supported "stuff"
    Atom *net_supported_list;
    // list of virtual root windows
    Window *net_virtual_root_list;
    // client leader window
    Window wm_client_leader;

    QX11InfoData *screens;
    Visual **argbVisuals;
    Colormap *argbColormaps;
    int screenCount;
    int defaultScreen;
    QHash<int, int> bppForDepth;

    Time time;
    Time userTime;

    // starts to ignore bad window errors from X
    void ignoreBadwindow() {
        ignore_badwindow = true;
        seen_badwindow = false;
    }

    // ends ignoring bad window errors and returns whether an error had happened.
    bool badwindow() {
        ignore_badwindow = false;
        return seen_badwindow;
    }

    bool ignore_badwindow;
    bool seen_badwindow;

    // options
    int visual_class;
    int visual_id;
    int color_count;
    bool custom_cmap;

    // outside visual/colormap
    Visual *visual;
    Colormap colormap;

#ifndef QT_NO_XRENDER
    enum { solid_fill_count = 16 };
    struct SolidFills {
        XRenderColor color;
        int screen;
        Picture picture;
    } solid_fills[solid_fill_count];
    enum { pattern_fill_count = 16 };
    struct PatternFills {
        XRenderColor color;
        XRenderColor bg_color;
        int screen;
        int style;
        bool opaque;
        Picture picture;
    } pattern_fills[pattern_fill_count];
    Picture getSolidFill(int screen, const QColor &c);
    XRenderColor preMultiply(const QColor &c);
#endif

    bool has_fontconfig;
    qreal fc_scale;
    bool fc_antialias;
    int fc_hint_style;

    char *startupId;

    /* Warning: if you modify this list, modify the names of atoms in qapplication_x11.cpp as well! */
    enum X11Atom {
        // window-manager <-> client protocols
        WM_PROTOCOLS,
        WM_DELETE_WINDOW,
        WM_TAKE_FOCUS,
        _NET_WM_PING,
        _NET_WM_CONTEXT_HELP,
        _NET_WM_SYNC_REQUEST,
        _NET_WM_SYNC_REQUEST_COUNTER,

        // ICCCM window state
        WM_STATE,
        WM_CHANGE_STATE,

        // Session management
        WM_CLIENT_LEADER,
        WM_WINDOW_ROLE,
        SM_CLIENT_ID,

        // Clipboard
        CLIPBOARD,
        INCR,
        TARGETS,
        MULTIPLE,
        TIMESTAMP,
        SAVE_TARGETS,
        CLIP_TEMPORARY,
        _QT_SELECTION,
        _QT_CLIPBOARD_SENTINEL,
        _QT_SELECTION_SENTINEL,
        CLIPBOARD_MANAGER,

        RESOURCE_MANAGER,

        _XSETROOT_ID,

        _QT_SCROLL_DONE,
        _QT_INPUT_ENCODING,

        _MOTIF_WM_HINTS,

        // EWMH (aka NETWM)
        _NET_SUPPORTED,
        _NET_VIRTUAL_ROOTS,
        _NET_WORKAREA,

        _NET_MOVERESIZE_WINDOW,
        _NET_WM_MOVERESIZE,

        _NET_WM_NAME,
        _NET_WM_ICON_NAME,
        _NET_WM_ICON,

        _NET_WM_PID,

        _NET_WM_WINDOW_OPACITY,

        _NET_WM_STATE,
        _NET_WM_STATE_ABOVE,
        _NET_WM_STATE_BELOW,
        _NET_WM_STATE_FULLSCREEN,
        _NET_WM_STATE_MAXIMIZED_HORZ,
        _NET_WM_STATE_MAXIMIZED_VERT,
        _NET_WM_STATE_MODAL,
        _NET_WM_STATE_STAYS_ON_TOP,
        _NET_WM_STATE_DEMANDS_ATTENTION,

        _NET_WM_USER_TIME,
        _NET_WM_USER_TIME_WINDOW,
        _NET_WM_FULL_PLACEMENT,

        _NET_WM_WINDOW_TYPE,
        _NET_WM_WINDOW_TYPE_DESKTOP,
        _NET_WM_WINDOW_TYPE_DOCK,
        _NET_WM_WINDOW_TYPE_TOOLBAR,
        _NET_WM_WINDOW_TYPE_MENU,
        _NET_WM_WINDOW_TYPE_UTILITY,
        _NET_WM_WINDOW_TYPE_SPLASH,
        _NET_WM_WINDOW_TYPE_DIALOG,
        _NET_WM_WINDOW_TYPE_DROPDOWN_MENU,
        _NET_WM_WINDOW_TYPE_POPUP_MENU,
        _NET_WM_WINDOW_TYPE_TOOLTIP,
        _NET_WM_WINDOW_TYPE_NOTIFICATION,
        _NET_WM_WINDOW_TYPE_COMBO,
        _NET_WM_WINDOW_TYPE_DND,
        _NET_WM_WINDOW_TYPE_NORMAL,

        _NET_STARTUP_INFO,
        _NET_STARTUP_INFO_BEGIN,

        _NET_SUPPORTING_WM_CHECK,

        _NET_WM_CM_S0,

        _NET_SYSTEM_TRAY_VISUAL,

        _NET_ACTIVE_WINDOW,

        // Property formats
        COMPOUND_TEXT,
        TEXT,
        UTF8_STRING,

        // Xdnd
        XdndEnter,
        XdndPosition,
        XdndStatus,
        XdndLeave,
        XdndDrop,
        XdndFinished,
        XdndTypelist,
        XdndActionList,

        XdndSelection,

        XdndAware,
        XdndProxy,

        XdndActionCopy,
        XdndActionLink,
        XdndActionMove,
        XdndActionPrivate,

        // Motif DND
        _MOTIF_DRAG_AND_DROP_MESSAGE,
        _MOTIF_DRAG_INITIATOR_INFO,
        _MOTIF_DRAG_RECEIVER_INFO,
        _MOTIF_DRAG_WINDOW,
        _MOTIF_DRAG_TARGETS,

        XmTRANSFER_SUCCESS,
        XmTRANSFER_FAILURE,

        // XEMBED
        _XEMBED,
        _XEMBED_INFO,

        NPredefinedAtoms,

        _QT_SETTINGS_TIMESTAMP = NPredefinedAtoms,
        NAtoms
    };
    Atom atoms[NAtoms];

    bool isSupportedByWM(Atom atom);

    bool compositingManagerRunning;
};

extern Q_GUI_EXPORT QX11Data *qt_x11Data;

#define ATOM(x) qt_x11Data->atoms[QX11Data::x]

// rename a couple of X defines to get rid of name clashes
// resolve the conflict between X11's FocusIn and QEvent::FocusIn
enum {
    XFocusOut = FocusOut,
    XFocusIn = FocusIn,
    XKeyPress = KeyPress,
    XKeyRelease = KeyRelease,
    XNone = None,
    XGrayScale = GrayScale,
    XCursorShape = CursorShape,
    XUnsorted = Unsorted,
    XFontChange = FontChange
};
#undef FocusOut
#undef FocusIn
#undef KeyPress
#undef KeyRelease
#undef None
#undef GrayScale
#undef CursorShape
#undef Unsorted
#undef FontChange

Q_DECLARE_TYPEINFO(XPoint, Q_PRIMITIVE_TYPE);
Q_DECLARE_TYPEINFO(XRectangle, Q_PRIMITIVE_TYPE);
Q_DECLARE_TYPEINFO(XChar2b, Q_PRIMITIVE_TYPE);
#ifndef QT_NO_XRENDER
Q_DECLARE_TYPEINFO(XGlyphElt32, Q_PRIMITIVE_TYPE);
#endif


QT_END_NAMESPACE

#endif // QT_X11_P_H