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/*
* tkZinc.h -- Header file for Tk zinc widget.
*
* Authors : Patrick Lecoanet.
* Creation date : Mon Mar 15 14:02:03 1999
*
* $Id$
*/
/*
* Copyright (c) 1993 - 2005 CENA, Patrick Lecoanet --
*
* See the file "Copyright" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
*/
#ifndef _tkZinc_h
#define _tkZinc_h
#include "WidgetInfo.h"
#include "Item.h"
#include "List.h"
#include "MapInfo.h"
#include <GL/glu.h>
typedef struct _ZnTagSearch {
ZnWInfo *wi;
ZnItem current; /* Pointer to last item returned. */
ZnItem previous; /* The item right before the current
* is tracked so if the current is
* deleted we don't have to start from the
* beginning. */
ZnBool over; /* Non-zero means NextItem should always
* return NULL. */
int type; /* search type */
unsigned int id; /* item id for searches by id */
Tk_Uid tag; /* tag expression string */
int tag_index; /* current position in string scan */
int tag_len; /* length of tag expression string */
char *rewrite_buf; /* tag string (after removing escapes) */
unsigned int rewrite_buf_alloc; /* available space for rewrites */
struct _TagSearchExpr *expr; /* compiled tag expression */
ZnItem group;
ZnBool recursive;
ZnList item_stack;
} ZnTagSearch;
/*
* Structure used by the tesselator.
*/
typedef struct _ZnCombineData {
ZnReal v[2];
struct _ZnCombineData *next;
} ZnCombineData;
typedef struct _ZnTess {
GLUtesselator *tess;
ZnCombineData *combine_list;
int type;
int combine_length;
} ZnTess;
extern ZnList ZnWorkPoints;
extern ZnList ZnWorkXPoints;
extern ZnList ZnWorkStrings;
extern ZnTess ZnTesselator;
#ifdef GL
typedef struct _ZnGLContextEntry {
ZnGLContext context;
Display *dpy;
ZnReal max_line_width;
ZnReal max_point_width;
unsigned int max_tex_size;
ZnList widgets;
#ifdef _WIN32
PIXELFORMATDESCRIPTOR pfd;
int ipixel;
HWND hwnd; /* Temporary storage between MakeCurrent and Release */
HDC hdc;
#else
XVisualInfo *visual; /* Should these two be managed by screen ? */
Colormap colormap;
#endif
struct _ZnGLContextEntry *next;
} ZnGLContextEntry;
ZnGLContextEntry *ZnGetGLContext(Display *dpy);
ZnGLContextEntry *ZnGLMakeCurrent(Display *dpy, ZnWInfo *wi);
void ZnGLReleaseContext(ZnGLContextEntry *ce);
#endif
int ZnParseCoordList(ZnWInfo *wi, Tcl_Obj *arg, ZnPoint **pts,
char **controls, unsigned int *num_pts, ZnBool *old_format);
int ZnItemWithTagOrId(ZnWInfo *wi, Tcl_Obj *tag_or_id,
ZnItem *item, ZnTagSearch **search_var);
void ZnTagSearchDestroy(ZnTagSearch *search);
void ZnDoItem(Tcl_Interp *interp, ZnItem item, int part, Tk_Uid tag_uid);
void ZnNeedRedisplay(ZnWInfo *wi);
void ZnDamage(ZnWInfo *wi, ZnBBox *damage);
void ZnDamageAll(ZnWInfo *wi);
#endif /* _tkZinc_h */
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