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view src/video/Xext/XME/xme.c @ 3473:7bdc10624cba

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This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Nov 2009 07:14:21 +0000
parents dea73e1d07b0
children 81dde1b00bf1
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 "../extensions/Xext.h"
#include "../extensions/extutil.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 (!XQueryExtension(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 (!_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 (!_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) {
            _XEatData(dpy, (unsigned long) size);
            UnlockDisplay(dpy);
            SyncHandle();
            return 0;
        }

        _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 (!_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) {
            _XEatData(dpy, (unsigned long) size);
            UnlockDisplay(dpy);
            SyncHandle();
            return 0;
        }

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

    UnlockDisplay(dpy);
    SyncHandle();

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

/* SDL addition from Ryan: free memory used by xme. */
void
XiGMiscDestroy(void)
{
    if (xigmisc_info) {
        XextDestroyExtension(xigmisc_info);
        xigmisc_info = NULL;
    }
}

/* vi: set ts=4 sw=4 expandtab: */