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/*
* 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 1.4.8.3 2002/08/20 20:27:19 das 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;
int argc;
CONST char **argv = NULL;
/*
* All cursor names are valid lists of one element (for
* Unix-compatability), even unadorned system cursor names.
*/
if (Tcl_SplitList(interp, string, &argc, &argv) != TCL_OK) {
return NULL;
}
if (argc != 1) {
goto badCursorSpec;
}
cursorPtr = (TkWinCursor *) ckalloc(sizeof(TkWinCursor));
cursorPtr->info.cursor = (Tk_Cursor) cursorPtr;
cursorPtr->winCursor = NULL;
cursorPtr->system = 0;
if (argv[0][0] == '@') {
/*
* Check for system cursor of type @<filename>, where only
* the name is allowed. This accepts any of:
* -cursor @/winnt/cursors/globe.ani
* -cursor @C:/Winnt/cursors/E_arrow.cur
* -cursor {@C:/Program\ Files/Cursors/bart.ani}
* -cursor {{@C:/Program Files/Cursors/bart.ani}}
* -cursor [list @[file join "C:/Program Files" Cursors bart.ani]]
*/
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]));
} else {
/*
* Check for the cursor in the system cursor set.
*/
for (namePtr = cursorNames; namePtr->name != NULL; namePtr++) {
if (strcmp(namePtr->name, argv[0]) == 0) {
cursorPtr->winCursor = LoadCursor(NULL, namePtr->id);
break;
}
}
if (cursorPtr->winCursor == NULL) {
/*
* Hmm, it is not in the system cursor set. Check to see
* if it is one of our application resources.
*/
cursorPtr->winCursor = LoadCursor(Tk_GetHINSTANCE(), argv[0]);
} else {
cursorPtr->system = 1;
}
}
if (cursorPtr->winCursor == NULL) {
ckfree((char *) cursorPtr);
badCursorSpec:
ckfree((char *) argv);
Tcl_AppendResult(interp, "bad cursor spec \"", string, "\"",
(char *) NULL);
return NULL;
} else {
ckfree((char *) argv);
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. */
CONST char *source; /* Bitmap data for cursor shape. */
CONST 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);
}
}
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