shared_source/c_tk_base_7_5_w_mods/tkwincursor.c

/* $Header$ */

/* 
 * tkWinCursor.c --
 *
 *      This file contains Win32 specific cursor related routines.
 *
 * Copyright (c) 1995 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tkwincursor.c,v 1.1.1.1 2001/06/13 05:12:07 dtashley Exp $
 */

#include "tkWinInt.h"

/*
 * The following data structure contains the system specific data
 * necessary to control Windows cursors.
 */

typedef struct {
    TkCursor info;              /* Generic cursor info used by tkCursor.c */
    HCURSOR winCursor;          /* Win32 cursor handle. */
    int system;                 /* 1 if cursor is a system cursor, else 0. */
} TkWinCursor;

/*
 * The table below is used to map from the name of a predefined cursor
 * to its resource identifier.
 */

static struct CursorName {
    char *name;
    LPCTSTR id;
} cursorNames[] = {
    {"starting",                IDC_APPSTARTING},
    {"arrow",                   IDC_ARROW},
    {"ibeam",                   IDC_IBEAM},
    {"icon",                    IDC_ICON},
    {"no",                      IDC_NO},
    {"size",                    IDC_SIZE},
    {"size_ne_sw",              IDC_SIZENESW},
    {"size_ns",                 IDC_SIZENS},
    {"size_nw_se",              IDC_SIZENWSE},
    {"size_we",                 IDC_SIZEWE},
    {"uparrow",                 IDC_UPARROW},
    {"wait",                    IDC_WAIT},
    {"crosshair",               IDC_CROSS},
    {"fleur",                   IDC_SIZE},
    {"sb_v_double_arrow",       IDC_SIZENS},
    {"sb_h_double_arrow",       IDC_SIZEWE},
    {"center_ptr",              IDC_UPARROW},
    {"watch",                   IDC_WAIT},
    {"xterm",                   IDC_IBEAM},
    {NULL,                      0}
};

/*
 * The default cursor is used whenever no other cursor has been specified.
 */

#define TK_DEFAULT_CURSOR       IDC_ARROW


/*
 *----------------------------------------------------------------------
 *
 * TkGetCursorByName --
 *
 *      Retrieve a system cursor by name.  
 *
 * Results:
 *      Returns a new cursor, or NULL on errors.  
 *
 * Side effects:
 *      Allocates a new cursor.
 *
 *----------------------------------------------------------------------
 */

TkCursor *
TkGetCursorByName(interp, tkwin, string)
    Tcl_Interp *interp;         /* Interpreter to use for error reporting. */
    Tk_Window tkwin;            /* Window in which cursor will be used. */
    Tk_Uid string;              /* Description of cursor.  See manual entry
                                 * for details on legal syntax. */
{
    struct CursorName *namePtr;
    TkWinCursor *cursorPtr;

    /*
     * Check for the cursor in the system cursor set.
     */

    for (namePtr = cursorNames; namePtr->name != NULL; namePtr++) {
        if (strcmp(namePtr->name, string) == 0) {
            break;
        }
    }

    cursorPtr = (TkWinCursor *) ckalloc(sizeof(TkWinCursor));
    cursorPtr->info.cursor = (Tk_Cursor) cursorPtr;
    cursorPtr->winCursor = NULL;
    if (namePtr->name != NULL) {
        cursorPtr->winCursor = LoadCursor(NULL, namePtr->id);
        cursorPtr->system = 1;
    }
    if (cursorPtr->winCursor == NULL) {
        cursorPtr->winCursor = LoadCursor(Tk_GetHINSTANCE(), string);
        cursorPtr->system = 0;
    }
    if (string[0] == '@') {
        int argc;
        char **argv = NULL;
        if (Tcl_SplitList(interp, string, &argc, &argv) != TCL_OK) {
            return NULL;
        }
        /*
         * Check for system cursor of type @<filename>, where only
         * the name is allowed.  This accepts either:
         *      -cursor @/winnt/cursors/globe.ani
         *      -cursor @C:/Winnt/cursors/E_arrow.cur
         *      -cursor {@C:/Program\ Files/Cursors/bart.ani}
         */
        if ((argc != 1) || (argv[0][0] != '@')) {
            ckfree((char *) argv);
            goto badCursorSpec;
        }
        if (Tcl_IsSafe(interp)) {
            Tcl_AppendResult(interp, "can't get cursor from a file in",
                    " a safe interpreter", (char *) NULL);
            ckfree((char *) argv);
            ckfree((char *)cursorPtr);
            return NULL;
        }
        cursorPtr->winCursor = LoadCursorFromFile(&(argv[0][1]));
        cursorPtr->system = 0;
        ckfree((char *) argv);
    }
    if (cursorPtr->winCursor == NULL) {
        badCursorSpec:
        ckfree((char *)cursorPtr);
        Tcl_AppendResult(interp, "bad cursor spec \"", string, "\"",
                (char *) NULL);
        return NULL;
    } else {
        return (TkCursor *) cursorPtr;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkCreateCursorFromData --
 *
 *      Creates a cursor from the source and mask bits.
 *
 * Results:
 *      Returns a new cursor, or NULL on errors.
 *
 * Side effects:
 *      Allocates a new cursor.
 *
 *----------------------------------------------------------------------
 */

TkCursor *
TkCreateCursorFromData(tkwin, source, mask, width, height, xHot, yHot,
        fgColor, bgColor)
    Tk_Window tkwin;            /* Window in which cursor will be used. */
    char *source;               /* Bitmap data for cursor shape. */
    char *mask;                 /* Bitmap data for cursor mask. */
    int width, height;          /* Dimensions of cursor. */
    int xHot, yHot;             /* Location of hot-spot in cursor. */
    XColor fgColor;             /* Foreground color for cursor. */
    XColor bgColor;             /* Background color for cursor. */
{
    return NULL;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpFreeCursor --
 *
 *      This procedure is called to release a cursor allocated by
 *      TkGetCursorByName.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      The cursor data structure is deallocated.
 *
 *----------------------------------------------------------------------
 */

void
TkpFreeCursor(cursorPtr)
    TkCursor *cursorPtr;
{
    TkWinCursor *winCursorPtr = (TkWinCursor *) cursorPtr;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpSetCursor --
 *
 *      Set the global cursor.  If the cursor is None, then use the
 *      default Tk cursor.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      Changes the mouse cursor.
 *
 *----------------------------------------------------------------------
 */

void
TkpSetCursor(cursor)
    TkpCursor cursor;
{
    HCURSOR hcursor;
    TkWinCursor *winCursor = (TkWinCursor *) cursor;

    if (winCursor == NULL || winCursor->winCursor == NULL) {
        hcursor = LoadCursor(NULL, TK_DEFAULT_CURSOR);
    } else {
        hcursor = winCursor->winCursor;
    }

    if (hcursor != NULL) {
        SetCursor(hcursor);
    }
}

/* End of tkwincursor.c */
1	/* $Header$ */
2
3	/*
4	* tkWinCursor.c --
5	*
6	* This file contains Win32 specific cursor related routines.
7	*
8	* Copyright (c) 1995 Sun Microsystems, Inc.
9	*
10	* See the file "license.terms" for information on usage and redistribution
11	* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
12	*
13	* RCS: @(#) $Id: tkwincursor.c,v 1.1.1.1 2001/06/13 05:12:07 dtashley Exp $
14	*/
15
16	#include "tkWinInt.h"
17
18	/*
19	* The following data structure contains the system specific data
20	* necessary to control Windows cursors.
21	*/
22
23	typedef struct {
24	TkCursor info; /* Generic cursor info used by tkCursor.c */
25	HCURSOR winCursor; /* Win32 cursor handle. */
26	int system; /* 1 if cursor is a system cursor, else 0. */
27	} TkWinCursor;
28
29	/*
30	* The table below is used to map from the name of a predefined cursor
31	* to its resource identifier.
32	*/
33
34	static struct CursorName {
35	char *name;
36	LPCTSTR id;
37	} cursorNames[] = {
38	{"starting", IDC_APPSTARTING},
39	{"arrow", IDC_ARROW},
40	{"ibeam", IDC_IBEAM},
41	{"icon", IDC_ICON},
42	{"no", IDC_NO},
43	{"size", IDC_SIZE},
44	{"size_ne_sw", IDC_SIZENESW},
45	{"size_ns", IDC_SIZENS},
46	{"size_nw_se", IDC_SIZENWSE},
47	{"size_we", IDC_SIZEWE},
48	{"uparrow", IDC_UPARROW},
49	{"wait", IDC_WAIT},
50	{"crosshair", IDC_CROSS},
51	{"fleur", IDC_SIZE},
52	{"sb_v_double_arrow", IDC_SIZENS},
53	{"sb_h_double_arrow", IDC_SIZEWE},
54	{"center_ptr", IDC_UPARROW},
55	{"watch", IDC_WAIT},
56	{"xterm", IDC_IBEAM},
57	{NULL, 0}
58	};
59
60	/*
61	* The default cursor is used whenever no other cursor has been specified.
62	*/
63
64	#define TK_DEFAULT_CURSOR IDC_ARROW
65
66
67	/*
68	*----------------------------------------------------------------------
69	*
70	* TkGetCursorByName --
71	*
72	* Retrieve a system cursor by name.
73	*
74	* Results:
75	* Returns a new cursor, or NULL on errors.
76	*
77	* Side effects:
78	* Allocates a new cursor.
79	*
80	*----------------------------------------------------------------------
81	*/
82
83	TkCursor *
84	TkGetCursorByName(interp, tkwin, string)
85	Tcl_Interp interp; / Interpreter to use for error reporting. */
86	Tk_Window tkwin; /* Window in which cursor will be used. */
87	Tk_Uid string; /* Description of cursor. See manual entry
88	* for details on legal syntax. */
89	{
90	struct CursorName *namePtr;
91	TkWinCursor *cursorPtr;
92
93	/*
94	* Check for the cursor in the system cursor set.
95	*/
96
97	for (namePtr = cursorNames; namePtr->name != NULL; namePtr++) {
98	if (strcmp(namePtr->name, string) == 0) {
99	break;
100	}
101	}
102
103	cursorPtr = (TkWinCursor *) ckalloc(sizeof(TkWinCursor));
104	cursorPtr->info.cursor = (Tk_Cursor) cursorPtr;
105	cursorPtr->winCursor = NULL;
106	if (namePtr->name != NULL) {
107	cursorPtr->winCursor = LoadCursor(NULL, namePtr->id);
108	cursorPtr->system = 1;
109	}
110	if (cursorPtr->winCursor == NULL) {
111	cursorPtr->winCursor = LoadCursor(Tk_GetHINSTANCE(), string);
112	cursorPtr->system = 0;
113	}
114	if (string[0] == '@') {
115	int argc;
116	char **argv = NULL;
117	if (Tcl_SplitList(interp, string, &argc, &argv) != TCL_OK) {
118	return NULL;
119	}
120	/*
121	* Check for system cursor of type @<filename>, where only
122	* the name is allowed. This accepts either:
123	* -cursor @/winnt/cursors/globe.ani
124	* -cursor @C:/Winnt/cursors/E_arrow.cur
125	* -cursor {@C:/Program\ Files/Cursors/bart.ani}
126	*/
127	if ((argc != 1) \|\| (argv[0][0] != '@')) {
128	ckfree((char *) argv);
129	goto badCursorSpec;
130	}
131	if (Tcl_IsSafe(interp)) {
132	Tcl_AppendResult(interp, "can't get cursor from a file in",
133	" a safe interpreter", (char *) NULL);
134	ckfree((char *) argv);
135	ckfree((char *)cursorPtr);
136	return NULL;
137	}
138	cursorPtr->winCursor = LoadCursorFromFile(&(argv[0][1]));
139	cursorPtr->system = 0;
140	ckfree((char *) argv);
141	}
142	if (cursorPtr->winCursor == NULL) {
143	badCursorSpec:
144	ckfree((char *)cursorPtr);
145	Tcl_AppendResult(interp, "bad cursor spec \"", string, "\"",
146	(char *) NULL);
147	return NULL;
148	} else {
149	return (TkCursor *) cursorPtr;
150	}
151	}
152
153	/*
154	*----------------------------------------------------------------------
155	*
156	* TkCreateCursorFromData --
157	*
158	* Creates a cursor from the source and mask bits.
159	*
160	* Results:
161	* Returns a new cursor, or NULL on errors.
162	*
163	* Side effects:
164	* Allocates a new cursor.
165	*
166	*----------------------------------------------------------------------
167	*/
168
169	TkCursor *
170	TkCreateCursorFromData(tkwin, source, mask, width, height, xHot, yHot,
171	fgColor, bgColor)
172	Tk_Window tkwin; /* Window in which cursor will be used. */
173	char source; / Bitmap data for cursor shape. */
174	char mask; / Bitmap data for cursor mask. */
175	int width, height; /* Dimensions of cursor. */
176	int xHot, yHot; /* Location of hot-spot in cursor. */
177	XColor fgColor; /* Foreground color for cursor. */
178	XColor bgColor; /* Background color for cursor. */
179	{
180	return NULL;
181	}
182
183	/*
184	*----------------------------------------------------------------------
185	*
186	* TkpFreeCursor --
187	*
188	* This procedure is called to release a cursor allocated by
189	* TkGetCursorByName.
190	*
191	* Results:
192	* None.
193	*
194	* Side effects:
195	* The cursor data structure is deallocated.
196	*
197	*----------------------------------------------------------------------
198	*/
199
200	void
201	TkpFreeCursor(cursorPtr)
202	TkCursor *cursorPtr;
203	{
204	TkWinCursor winCursorPtr = (TkWinCursor ) cursorPtr;
205	}
206
207	/*
208	*----------------------------------------------------------------------
209	*
210	* TkpSetCursor --
211	*
212	* Set the global cursor. If the cursor is None, then use the
213	* default Tk cursor.
214	*
215	* Results:
216	* None.
217	*
218	* Side effects:
219	* Changes the mouse cursor.
220	*
221	*----------------------------------------------------------------------
222	*/
223
224	void
225	TkpSetCursor(cursor)
226	TkpCursor cursor;
227	{
228	HCURSOR hcursor;
229	TkWinCursor winCursor = (TkWinCursor ) cursor;
230
231	if (winCursor == NULL \|\| winCursor->winCursor == NULL) {
232	hcursor = LoadCursor(NULL, TK_DEFAULT_CURSOR);
233	} else {
234	hcursor = winCursor->winCursor;
235	}
236
237	if (hcursor != NULL) {
238	SetCursor(hcursor);
239	}
240	}
241
242	/* End of tkwincursor.c */