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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.
*/
#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 HAND cursor is only present when WINVER >= 0x0500. If this is not
* available at runtime, it will default to the unix-style cursor.
*/
#ifndef IDC_HAND
#define IDC_HAND MAKEINTRESOURCE(32649)
#endif
#ifndef IDC_HELP
#define IDC_HELP MAKEINTRESOURCE(32651)
#endif
/*
* The table below is used to map from the name of a predefined cursor to its
* resource identifier.
*/
static const struct CursorName {
const char *name;
LPCTSTR id;
} cursorNames[] = {
{"starting", IDC_APPSTARTING},
{"arrow", IDC_ARROW},
{"ibeam", IDC_IBEAM},
{"icon", IDC_ICON},
{"no", IDC_NO},
{"size", IDC_SIZEALL},
{"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_SIZEALL},
{"sb_v_double_arrow", IDC_SIZENS},
{"sb_h_double_arrow", IDC_SIZEWE},
{"center_ptr", IDC_UPARROW},
{"watch", IDC_WAIT},
{"xterm", IDC_IBEAM},
{"hand2", IDC_HAND},
{"question_arrow", IDC_HELP},
{NULL, 0}
};
/*
* The default cursor is used whenever no other cursor has been specified.
*/
#define TK_DEFAULT_CURSOR (LPCWSTR)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(
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. */
{
const struct CursorName *namePtr;
TkWinCursor *cursorPtr;
int argc;
const char **argv = NULL;
/*
* All cursor names are valid lists of one element (for
* Unix-compatibility), even unadorned system cursor names.
*/
if (Tcl_SplitList(interp, string, &argc, &argv) != TCL_OK) {
return NULL;
}
if (argc == 0) {
goto badCursorSpec;
}
cursorPtr = 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_SetObjResult(interp, Tcl_NewStringObj(
"can't get cursor from a file in a safe interpreter",-1));
Tcl_SetErrorCode(interp, "TK", "SAFE", "CURSOR_FILE", NULL);
ckfree(argv);
ckfree(cursorPtr);
return NULL;
}
cursorPtr->winCursor = LoadCursorFromFileA(&(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 = LoadCursorW(NULL, (LPCWSTR) 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 = LoadCursorA(Tk_GetHINSTANCE(), argv[0]);
} else {
cursorPtr->system = 1;
}
}
if (cursorPtr->winCursor == NULL) {
ckfree(cursorPtr);
badCursorSpec:
ckfree(argv);
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"bad cursor spec \"%s\"", string));
Tcl_SetErrorCode(interp, "TK", "VALUE", "CURSOR", NULL);
return NULL;
}
ckfree(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(
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, 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;
}
/*
*----------------------------------------------------------------------
*
* TkpFreeCursor --
*
* This procedure is called to release a cursor allocated by
* TkGetCursorByName.
*
* Results:
* None.
*
* Side effects:
* The cursor data structure is deallocated.
*
*----------------------------------------------------------------------
*/
void
TkpFreeCursor(
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(
TkpCursor cursor)
{
HCURSOR hcursor;
TkWinCursor *winCursor = (TkWinCursor *) cursor;
if (winCursor == NULL || winCursor->winCursor == NULL) {
hcursor = LoadCursorW(NULL, TK_DEFAULT_CURSOR);
} else {
hcursor = winCursor->winCursor;
}
if (hcursor != NULL) {
SetCursor(hcursor);
}
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
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