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Date: Thu, 19 Jan 2006 20:02:29 +0200 From: Vassilis Virvilis <vasvir@iit.demokritos.gr> Subject: [SDL] Request: Please reconsider adding tag in SDL_Event Hi, Patch in question: --- include/SDL_events.h 20 Aug 2004 18:57:01 -0000 1.11 +++ include/SDL_events.h 19 Jan 2006 17:35:09 -0000 @@ -214,7 +214,7 @@ } SDL_SysWMEvent; /* General event structure */ -typedef union { +typedef union SDL_Event { Uint8 type; SDL_ActiveEvent active; SDL_KeyboardEvent key; Reasoning: ---------- 1) Allows forward declaration of the SDL_Event union in C++. Please note that in plain C it is possible to forward declare it. 2) Forward declaration is good because it allows encapsulation. It hides the specific implementation and does not necessarily exposes SDL staff to my appication's namespace 3) It can't harm plain C because tags are living in a different namespace than typenames 4) It is already done like this in other places in SDL. Check for example SDL_KeySym, and SDL_.*Event structures. 5) Right now I have to include SDL/event.h from a C++ header file. See 2)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 20 Jan 2006 13:07:25 +0000
parents caf0328c8058
children 19418e4422cb
line wrap: on
line source

/*
 * Copyright 1993-2001 by Xi Graphics, Inc.
 * All Rights Reserved.
 *
 * Please see the LICENSE file accompanying this distribution for licensing 
 * information. 
 *
 * Please send any bug fixes and modifications to src@xig.com.
 *
 * $XiGId: xme.c,v 1.2 2001/11/30 21:56:59 jon Exp $
 *
 */

#define NEED_EVENTS
#define NEED_REPLIES

#include <X11/Xlibint.h>
#include <X11/Xthreads.h>
#include <X11/Xmd.h>
#include <X11/Xproto.h>
#include <X11/extensions/Xext.h>
#include "extutil.h"

#include "../../x11/SDL_x11dyn.h"

/*****************************************************************************/


#define	XIGMISC_PROTOCOL_NAME 		     "XiG-SUNDRY-NONSTANDARD"
#define XIGMISC_MAJOR_VERSION	             2
#define XIGMISC_MINOR_VERSION 	             0

#define XiGMiscNumberEvents	             0

#define	X_XiGMiscQueryVersion		     0
#define	X_XiGMiscQueryViews		     1
#define X_XiGMiscQueryResolutions            2
#define X_XiGMiscChangeResolution            3
#define X_XiGMiscFullScreen                  4

#define sz_xXiGMiscQueryVersionReq	     8
#define sz_xXiGMiscQueryViewsReq	     8
#define sz_xXiGMiscQueryResolutionsReq       8
#define sz_xXiGMiscChangeResolutionReq       16
#define sz_xXiGMiscFullScreenReq             16

#define sz_xXiGMiscQueryVersionReply	     32
#define sz_xXiGMiscQueryViewsReply	     32
#define sz_xXiGMiscQueryResolutionsReply     32
#define sz_xXiGMiscQueryFullScreenReply      32

/*******************************************************************/

typedef struct {
  CARD8         reqType;                /* always codes->major_opcode        */
  CARD8         xigmiscReqType;         /* always X_XiGMiscQueryVersion      */
  CARD16        length;
  CARD16        major;
  CARD16        minor;
} xXiGMiscQueryVersionReq;

typedef struct {
  CARD8         reqType;                /* always codes->major_opcode        */
  CARD8         xigmiscReqType;         /* always X_XiGMiscQueryViews        */
  CARD16        length;
  CARD8		screen;
  CARD8		pad0;
  CARD16	pad1;
} xXiGMiscQueryViewsReq;

typedef struct {
  CARD8         reqType;                /* always codes->major_opcode        */
  CARD8         xigmiscReqType;         /* always X_XiGMiscQueryResolutions  */
  CARD16        length;
  CARD8		screen;
  CARD8		view;
  CARD16	pad0;
} xXiGMiscQueryResolutionsReq;

typedef struct {
  CARD8         reqType;                /* always codes->major_opcode        */
  CARD8         xigmiscReqType;         /* always X_XiGMiscChangeResolution  */
  CARD16        length;
  CARD8		screen;
  CARD8		view;
  CARD16	pad0;
  CARD16        width;
  CARD16        height;
  INT32         refresh;
} xXiGMiscChangeResolutionReq;

typedef struct {
  CARD8         reqType;                /* always codes->major_opcode        */
  CARD8         xigmiscReqType;         /* always X_XiGMiscFullScreen        */
  CARD16        length;
  CARD8		screen;
  CARD8		pad0;
  CARD16	pad1;
  CARD32	window;
  CARD32	cmap;
} xXiGMiscFullScreenReq;

/*******************************************************************/

typedef struct {        
  BYTE          type;                   /* X_Reply                           */
  CARD8         pad0;
  CARD16        sequenceNumber;
  CARD32        length;
  CARD16        major;
  CARD16        minor;
  CARD32        pad1;
  CARD32        pad2;
  CARD32        pad3;
  CARD32        pad4;
  CARD32        pad5;
} xXiGMiscQueryVersionReply;

typedef struct {        
  BYTE          type;                   /* X_Reply                           */
  CARD8         pad0;
  CARD16        sequenceNumber;
  CARD32        length;
  CARD32        nviews;
  CARD32        pad1;
  CARD32        pad2;
  CARD32        pad3;
  CARD32        pad4;
  CARD32        pad5;
} xXiGMiscQueryViewsReply;

typedef struct {        
  BYTE          type;                   /* X_Reply                           */
  CARD8         pad0;
  CARD16        sequenceNumber;
  CARD32        length;
  CARD16        active;
  CARD16        nresolutions;
  CARD32        pad1;
  CARD32        pad2;
  CARD32        pad3;
  CARD32        pad4;
  CARD32        pad5;
} xXiGMiscQueryResolutionsReply;

typedef struct {        
  BYTE          type;                   /* X_Reply                           */
  BOOL          success;
  CARD16        sequenceNumber;
  CARD32        length;
  CARD32        pad1;
  CARD32        pad2;
  CARD32        pad3;
  CARD32        pad4;
  CARD32        pad5;
  CARD32        pad6;
} xXiGMiscFullScreenReply;

/*******************************************************************/

typedef struct {        
  INT16		x;
  INT16		y;
  CARD16	w;
  CARD16	h;
} XiGMiscViewInfo;

typedef struct {        
  CARD16        width;
  CARD16        height;
  INT32         refresh;
} XiGMiscResolutionInfo;

/*****************************************************************************/

static XExtensionInfo *xigmisc_info = NULL;
static char *xigmisc_extension_name = XIGMISC_PROTOCOL_NAME;

#define XiGMiscCheckExtension(dpy,i,val) \
  XextCheckExtension (dpy, i, xigmisc_extension_name, val)
#define XiGMiscSimpleCheckExtension(dpy,i) \
  XextSimpleCheckExtension (dpy, i, xigmisc_extension_name)

#if defined(__STDC__) && !defined(UNIXCPP)
#define XiGMiscGetReq(name,req,info) GetReq (name, req); \
        req->reqType = info->codes->major_opcode; \
        req->xigmiscReqType = X_##name;

#define XiGMiscGetReqExtra(name,n,req,info) GetReqExtra (name, n, req); \
        req->reqType = info->codes->major_opcode; \
        req->xigmicReqType = X_##name;
#else
#define XiGMiscGetReq(name,req,info) GetReq (name, req); \
        req->reqType = info->codes->major_opcode; \
        req->xigmiscReqType = X_/**/name;
#define XiGMiscGetReqExtra(name,n,req,info) GetReqExtra (name, n, req); \
        req->reqType = info->codes->major_opcode; \
        req->xigmiscReqType = X_/**/name;
#endif



/*
 * find_display - locate the display info block
 */
static int XiGMiscCloseDisplay();

static XExtensionHooks xigmisc_extension_hooks = {
    NULL,                               /* create_gc */
    NULL,                               /* copy_gc */
    NULL,                               /* flush_gc */
    NULL,                               /* free_gc */
    NULL,                               /* create_font */
    NULL,                               /* free_font */
    XiGMiscCloseDisplay,                /* close_display */
    NULL,                               /* wire_to_event */
    NULL,                               /* event_to_wire */
    NULL,                               /* error */
    NULL,                               /* error_string */
};


static XEXT_GENERATE_CLOSE_DISPLAY (XiGMiscCloseDisplay, xigmisc_info)

static XEXT_GENERATE_FIND_DISPLAY (XiGMiscFindDisplay, xigmisc_info,
				   xigmisc_extension_name, 
				   &xigmisc_extension_hooks, XiGMiscNumberEvents, NULL)


/*****************************************************************************/

Bool XiGMiscQueryVersion(Display *dpy, int *major, int *minor)
{
  int opcode, event, error;
  xXiGMiscQueryVersionReq *req;
  xXiGMiscQueryVersionReply rep;
  XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);

  if (!pXQueryExtension(dpy, XIGMISC_PROTOCOL_NAME, &opcode, &event, &error))
    return xFalse;

  XiGMiscCheckExtension(dpy, info, xFalse);

  LockDisplay (dpy);
  XiGMiscGetReq (XiGMiscQueryVersion, req, info);

  req->major = XIGMISC_MAJOR_VERSION;
  req->minor = XIGMISC_MINOR_VERSION;

  if (!p_XReply (dpy, (xReply *)&rep, 0, xTrue)) {
    UnlockDisplay(dpy);
    SyncHandle();
    return xFalse;
  }

  *major = rep.major;
  *minor = rep.minor;
  UnlockDisplay(dpy);
  SyncHandle();

  return xTrue;
}

int XiGMiscQueryViews(Display *dpy, int screen, XiGMiscViewInfo **pviews)
{
  int n, size;
  XiGMiscViewInfo *views;
  xXiGMiscQueryViewsReq *req;
  xXiGMiscQueryViewsReply rep;
  XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);
  XiGMiscCheckExtension(dpy, info, 0);

  LockDisplay (dpy);
  XiGMiscGetReq (XiGMiscQueryViews, req, info);
  req->screen = screen;

  if (!p_XReply (dpy, (xReply *)&rep, 0, xFalse)) {
    UnlockDisplay(dpy);
    SyncHandle();
    return 0;
  }

  n = rep.nviews;

  if (n > 0) {
    size = sizeof(XiGMiscViewInfo) * n;
    views = (XiGMiscViewInfo*)Xmalloc(size);
    if (!views) {
      p_XEatData(dpy, (unsigned long)size);
      UnlockDisplay(dpy);
      SyncHandle();
      return 0;
    }

    p_XReadPad(dpy, (void*)views, size);

    *pviews = views;
  }

  UnlockDisplay(dpy);
  SyncHandle();

  return n;
}

int XiGMiscQueryResolutions(Display *dpy, int screen, int view, int *pactive, XiGMiscResolutionInfo **presolutions)
{
  int n, size;
  XiGMiscResolutionInfo *resolutions;
  xXiGMiscQueryResolutionsReq *req;
  xXiGMiscQueryResolutionsReply rep;
  XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);
  XiGMiscCheckExtension(dpy, info, 0);

  LockDisplay (dpy);
  XiGMiscGetReq (XiGMiscQueryResolutions, req, info);
  req->screen = screen;
  req->view   = view;

  if (!p_XReply (dpy, (xReply *)&rep, 0, xFalse)) {
    UnlockDisplay(dpy);
    SyncHandle();
    return 0;
  }

  n = rep.nresolutions;

  if (n > 0) {
    size = sizeof(XiGMiscResolutionInfo) * n;
    resolutions = (XiGMiscResolutionInfo*)Xmalloc(size);
    if (!resolutions) {
      p_XEatData(dpy, (unsigned long)size);
      UnlockDisplay(dpy);
      SyncHandle();
      return 0;
    }

    p_XReadPad(dpy, (void*)resolutions, size);

    *presolutions = resolutions;
    *pactive = rep.active;
  }

  UnlockDisplay(dpy);
  SyncHandle();

  return n;
}

void XiGMiscChangeResolution(Display *dpy, int screen, int view, int width, int height, int refresh)
{
  xXiGMiscChangeResolutionReq *req;
  XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);

  XiGMiscSimpleCheckExtension(dpy, info);

  LockDisplay (dpy);
  XiGMiscGetReq (XiGMiscChangeResolution, req, info);
  req->screen = screen;
  req->view = view;
  req->width = width;
  req->height = height;
  req->refresh = refresh;

  UnlockDisplay(dpy);
  SyncHandle();
}


Bool XiGMiscFullScreen(Display *dpy, int screen, XID window, XID cmap)
{
  xXiGMiscFullScreenReq *req;
  xXiGMiscFullScreenReply rep;
  XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);

  XiGMiscCheckExtension(dpy, info, xFalse);

  LockDisplay (dpy);
  XiGMiscGetReq (XiGMiscFullScreen, req, info);
  req->screen = screen;
  req->pad0 = 0;
  req->pad1 = 0;
  req->window = window;
  req->cmap = cmap;

  if (!p_XReply (dpy, (xReply *)&rep, 0, xTrue)) {
    UnlockDisplay(dpy);
    SyncHandle();
    return xFalse;
  }

  UnlockDisplay(dpy);
  SyncHandle();

  return (rep.success ? xTrue : xFalse);
}