/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)          */
/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de>  */
/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de>                */
/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de>                 */
/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com)           */
/*                                                                        */
/* NXAGENT, NX protocol compression and NX extensions to this software    */
/* are copyright of the aforementioned persons and companies.             */
/*                                                                        */
/* Redistribution and use of the present software is allowed according    */
/* to terms specified in the file LICENSE which comes in the source       */
/* distribution.                                                          */
/*                                                                        */
/* All rights reserved.                                                   */
/*                                                                        */
/* NOTE: This software has received contributions from various other      */
/* contributors, only the core maintainers and supporters are listed as   */
/* copyright holders. Please contact us, if you feel you should be listed */
/* as copyright holder, as well.                                          */
/*                                                                        */
/**************************************************************************/

#ifndef __Events_H__
#define __Events_H__

#include <nx-X11/Xmd.h>

#define ProcessedExpose (LASTEvent + 1)
#define ProcessedNotify (LASTEvent + 2)

#define EXPOSED_SIZE 256

enum HandleEventResult
{
  doNothing = 0,
  doMinimize,
  doDebugTree,
  doCloseSession,
  doSwitchFullscreen,
  doSwitchAllScreens,
  doViewportMoveUp,
  doViewportMoveLeft,
  doViewportMoveRight,
  doViewportMoveDown,
  doViewportLeft,
  doViewportUp,
  doViewportRight,
  doViewportDown,
  doSwitchResizeMode,
  doSwitchDeferMode,
  doAutoGrab,
  doDumpClipboard
};

extern CARD32 nxagentLastEventTime;

/*
 * Manage incoming events.
 */

typedef Bool (*PredicateFuncPtr)(Display*, XEvent*, XPointer);

extern void nxagentDispatchEvents(PredicateFuncPtr);

typedef int (*GetResourceFuncPtr)(Display*);

int nxagentWaitForResource(GetResourceFuncPtr, PredicateFuncPtr);

Bool nxagentCollectGrabPointerPredicate(Display *disp, XEvent *X, XPointer ptr);

int nxagentInputEventPredicate(Display *disp, XEvent *event, XPointer parameter);

/*
 * Enable and disable notification of remote X server events.
 */

extern void nxagentEnableKeyboardEvents(void);
extern void nxagentEnablePointerEvents(void);

extern void nxagentDisableKeyboardEvents(void);
extern void nxagentDisablePointerEvents(void);

/*
 * Manage default event mask.
 */

extern void nxagentInitDefaultEventMask(void);
extern Mask nxagentGetDefaultEventMask(void);
extern void nxagentSetDefaultEventMask(Mask mask);
extern Mask nxagentGetEventMask(WindowPtr pWin);

/*
 * Bring keyboard device in known state. It needs a round-trip so it
 * only gets called if a previous XKB event did not implicitly
 * initialized the internal state. This is unlikely to happen.
 */

extern int nxagentInitXkbKeyboardState(void);

/*
 * Update the keyboard state according to focus and XKB events
 * received from the remote X server.
 */

extern int nxagentHandleXkbKeyboardStateEvent(XEvent *X);

/*
 * Handle sync and karma messages and other notification event coming
 * from proxy.
 */

extern int nxagentHandleProxyEvent(XEvent *X);

/*
 * Other functions providing the ad-hoc handling of the remote X
 * events.
 */

extern int nxagentHandleExposeEvent(XEvent *X);
extern int nxagentHandleGraphicsExposeEvent(XEvent *X);
extern int nxagentHandleClientMessageEvent(XEvent *X, enum HandleEventResult*);
extern int nxagentHandlePropertyNotify(XEvent *X);
extern int nxagentHandleKeyPress(XEvent *X, enum HandleEventResult*);
extern int nxagentHandleReparentNotify(XEvent *X);
extern int nxagentHandleConfigureNotify(XEvent *X);
extern int nxagentHandleXFixesSelectionNotify(XEvent *X);

/*
 * Send a fake keystroke to the remote X server.
 */

extern void nxagentSendFakeKey(int key);

/*
 * Called to manage grab of pointer and keyboard when running in
 * fullscreen mode.
 */

extern void nxagentGrabPointerAndKeyboard(XEvent *X);
extern void nxagentUngrabPointerAndKeyboard(XEvent *X);

extern void nxagentDeactivatePointerGrab(void);

/*
 * Synchronize expose events between agent and the real X server.
 */

typedef struct _ExposuresRec
{
  WindowPtr pWindow;
  RegionPtr localRegion;
  RegionPtr remoteRegion;
  Bool remoteRegionIsCompleted;
  int serial;
  int synchronize;

} ExposuresRec;

extern RegionPtr nxagentRemoteExposeRegion;

typedef struct _ExposeQueue
{
  unsigned int start;
  int length;
  ExposuresRec exposures[EXPOSED_SIZE];
} ExposeQueue;

extern void nxagentSynchronizeExpose(void);
extern int nxagentLookupByWindow(WindowPtr pWin);
extern void nxagentUpdateExposeArray(void);

extern ExposeQueue nxagentExposeQueue;

/*
 * Handle the split related notifications.
 */

int nxagentWaitSplitEvent(int resource);

void nxagentHandleNoSplitEvent(int resource);
void nxagentHandleStartSplitEvent(int resource);
void nxagentHandleCommitSplitEvent(int resource, int request, int position);
void nxagentHandleEndSplitEvent(int resource);
void nxagentHandleEmptySplitEvent(void);

void nxagentInitRemoteExposeRegion(void);
void nxagentAddRectToRemoteExposeRegion(BoxPtr);

extern int nxagentUserInput(void *p);

/*
 * We have to check these before launching the terminate dialog in
 * rootless mode.
 */

extern Bool nxagentLastWindowDestroyed;
extern Time nxagentLastWindowDestroyedTime;

/*
 * Set this flag if an user input event is received.
 */

extern int nxagentInputEvent;

/*
 * Event-handling utilities.
 */

int nxagentPendingEvents(Display *dpy);

#define nxagentQueuedEvents(display) \
    XQLength((display))

#define nxagentReadEvents(display) \
    XEventsQueued((display), QueuedAfterReading)

#define nxagentCheckEvents(display, event, predicate, argument) \
    XCheckIfEventNoFlush((display), (event), (predicate), (argument))

int nxagentWaitEvents(Display *, useconds_t msec);

#endif /* __Events_H__ */