1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
|
/*
* tkMacCursor.c --
*
* This file contains Macintosh specific cursor related routines.
*
* Copyright (c) 1995-1997 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: tkMacCursor.c,v 1.3.4.1 1999/03/06 23:07:52 stanton Exp $
*/
#include "tkPort.h"
#include "tkInt.h"
#include "tkMacInt.h"
#include <Resources.h>
#include <ToolUtils.h>
#include <Strings.h>
/*
* There are three different ways to set the cursor on the Mac.
*/
#define ARROW 0 /* The arrow cursor. */
#define COLOR 1 /* Cursors of type crsr. */
#define NORMAL 2 /* Cursors of type CURS. */
/*
* 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 */
Handle macCursor; /* Resource containing Macintosh cursor. */
int type; /* Type of Mac cursor: arrow, crsr, CURS */
} TkMacCursor;
/*
* The table below is used to map from the name of a predefined cursor
* to its resource identifier.
*/
static struct CursorName {
char *name;
int id;
} cursorNames[] = {
{"ibeam", 1},
{"text", 1},
{"xterm", 1},
{"cross", 2},
{"crosshair", 2},
{"cross-hair", 2},
{"plus", 3},
{"watch", 4},
{"arrow", 5},
{NULL, 0}
};
/*
* Declarations of static variables used in this file.
*/
static TkMacCursor * gCurrentCursor = NULL; /* A pointer to the current
* cursor. */
static int gResizeOverride = false; /* A boolean indicating whether
* we should use the resize
* cursor during installations. */
static int gTkOwnsCursor = true; /* A boolean indicating whether
Tk owns the cursor. If not (for
instance, in the case where a Tk
window is embedded in another app's
window, and the cursor is out of
the tk window, we will not attempt
to adjust the cursor */
/*
* Declarations of procedures local to this file
*/
static void FindCursorByName _ANSI_ARGS_ ((TkMacCursor *macCursorPtr,
char *string));
/*
*----------------------------------------------------------------------
*
* FindCursorByName --
*
* Retrieve a system cursor by name, and fill the macCursorPtr
* structure. If the cursor cannot be found, the macCursor field
* will be NULL. The function first attempts to load a color
* cursor. If that fails it will attempt to load a black & white
* cursor.
*
* Results:
* Fills the macCursorPtr record.
*
* Side effects:
* None
*
*----------------------------------------------------------------------
*/
void
FindCursorByName(
TkMacCursor *macCursorPtr,
char *string)
{
Handle resource;
Str255 curName;
curName[0] = strlen(string);
if (curName[0] > 255) {
return;
}
strcpy((char *) curName + 1, string);
resource = GetNamedResource('crsr', curName);
if (resource != NULL) {
short id;
Str255 theName;
ResType theType;
HLock(resource);
GetResInfo(resource, &id, &theType, theName);
HUnlock(resource);
macCursorPtr->macCursor = (Handle) GetCCursor(id);
macCursorPtr->type = COLOR;
}
if (resource == NULL) {
macCursorPtr->macCursor = GetNamedResource('CURS', curName);
macCursorPtr->type = NORMAL;
}
}
/*
*----------------------------------------------------------------------
*
* TkGetCursorByName --
*
* Retrieve a system cursor by name.
*
* Results:
* Returns a new cursor, or NULL on errors.
*
* Side effects:
* Allocates a new cursor.
*
*----------------------------------------------------------------------
*/
TkCursor *
TkGetCursorByName(
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;
TkMacCursor *macCursorPtr;
macCursorPtr = (TkMacCursor *) ckalloc(sizeof(TkMacCursor));
macCursorPtr->info.cursor = (Tk_Cursor) macCursorPtr;
/*
* To find a cursor we must first determine if it is one of the
* builtin cursors or the standard arrow cursor. Otherwise, we
* attempt to load the cursor as a named Mac resource.
*/
for (namePtr = cursorNames; namePtr->name != NULL; namePtr++) {
if (strcmp(namePtr->name, string) == 0) {
break;
}
}
if (namePtr->name != NULL) {
if (namePtr->id == 5) {
macCursorPtr->macCursor = (Handle) -1;
macCursorPtr->type = ARROW;
} else {
macCursorPtr->macCursor = (Handle) GetCursor(namePtr->id);
macCursorPtr->type = NORMAL;
}
} else {
FindCursorByName(macCursorPtr, string);
if (macCursorPtr->macCursor == NULL) {
char **argv;
int argc, err;
/*
* The user may be trying to specify an XCursor with fore
* & back colors. We don't want this to be an error, so pick
* off the first word, and try again.
*/
err = Tcl_SplitList(interp, string, &argc, &argv);
if (err == TCL_OK ) {
if (argc > 1) {
FindCursorByName(macCursorPtr, argv[0]);
}
ckfree((char *) argv);
}
}
}
if (macCursorPtr->macCursor == NULL) {
ckfree((char *)macCursorPtr);
Tcl_AppendResult(interp, "bad cursor spec \"", string, "\"",
(char *) NULL);
return NULL;
} else {
return (TkCursor *) macCursorPtr;
}
}
/*
*----------------------------------------------------------------------
*
* 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(
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, int height, /* Dimensions of cursor. */
int xHot, int yHot, /* Location of hot-spot in cursor. */
XColor fgColor, /* Foreground color for cursor. */
XColor bgColor) /* Background color for cursor. */
{
return NULL;
}
/*
*----------------------------------------------------------------------
*
* TkFreeCursor --
*
* This procedure is called to release a cursor allocated by
* TkGetCursorByName.
*
* Results:
* None.
*
* Side effects:
* The cursor data structure is deallocated.
*
*----------------------------------------------------------------------
*/
void
TkFreeCursor(
TkCursor *cursorPtr)
{
TkMacCursor *macCursorPtr = (TkMacCursor *) cursorPtr;
switch (macCursorPtr->type) {
case COLOR:
DisposeCCursor((CCrsrHandle) macCursorPtr->macCursor);
break;
case NORMAL:
ReleaseResource(macCursorPtr->macCursor);
break;
}
if (macCursorPtr == gCurrentCursor) {
gCurrentCursor = NULL;
}
ckfree((char *) macCursorPtr);
}
/*
*----------------------------------------------------------------------
*
* TkMacInstallCursor --
*
* Installs either the current cursor as defined by TkpSetCursor
* or a resize cursor as the cursor the Macintosh should currently
* display.
*
* Results:
* None.
*
* Side effects:
* Changes the Macintosh mouse cursor.
*
*----------------------------------------------------------------------
*/
void
TkMacInstallCursor(
int resizeOverride)
{
TkMacCursor *macCursorPtr = gCurrentCursor;
CCrsrHandle ccursor;
CursHandle cursor;
gResizeOverride = resizeOverride;
if (resizeOverride) {
cursor = (CursHandle) GetNamedResource('CURS', "\presize");
SetCursor(*cursor);
} else if (macCursorPtr == NULL || macCursorPtr->type == ARROW) {
SetCursor(&tcl_macQdPtr->arrow);
} else {
switch (macCursorPtr->type) {
case COLOR:
ccursor = (CCrsrHandle) macCursorPtr->macCursor;
SetCCursor(ccursor);
break;
case NORMAL:
cursor = (CursHandle) macCursorPtr->macCursor;
SetCursor(*cursor);
break;
}
}
}
/*
*----------------------------------------------------------------------
*
* TkpSetCursor --
*
* Set the current cursor and install it.
*
* Results:
* None.
*
* Side effects:
* Changes the current cursor.
*
*----------------------------------------------------------------------
*/
void
TkpSetCursor(
TkpCursor cursor)
{
if (!gTkOwnsCursor) {
return;
}
if (cursor == None) {
gCurrentCursor = NULL;
} else {
gCurrentCursor = (TkMacCursor *) cursor;
}
if (tkMacAppInFront) {
TkMacInstallCursor(gResizeOverride);
}
}
/*
*----------------------------------------------------------------------
*
* Tk_MacTkOwnsCursor --
*
* Sets whether Tk has the right to adjust the cursor.
*
* Results:
* None.
*
* Side effects:
* May keep Tk from changing the cursor.
*
*----------------------------------------------------------------------
*/
void
Tk_MacTkOwnsCursor(
int tkOwnsIt)
{
gTkOwnsCursor = tkOwnsIt;
}
|