Import Tk 8.5.15 (as of svn r89086)
This commit is contained in:
Zachary Ware
271
win/tkWinCursor.c
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271
win/tkWinCursor.c
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/*
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* tkWinCursor.c --
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*
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* This file contains Win32 specific cursor related routines.
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*
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* Copyright (c) 1995 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution of
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* this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*/
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#include "tkWinInt.h"
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/*
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* The following data structure contains the system specific data necessary to
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* control Windows cursors.
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*/
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typedef struct {
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TkCursor info; /* Generic cursor info used by tkCursor.c */
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HCURSOR winCursor; /* Win32 cursor handle. */
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int system; /* 1 if cursor is a system cursor, else 0. */
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} TkWinCursor;
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/*
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* The HAND cursor is only present when WINVER >= 0x0500. If this is not
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* available at runtime, it will default to the unix-style cursor.
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*/
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#ifndef IDC_HAND
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#define IDC_HAND MAKEINTRESOURCE(32649)
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#endif
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#ifndef IDC_HELP
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#define IDC_HELP MAKEINTRESOURCE(32651)
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#endif
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/*
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* The table below is used to map from the name of a predefined cursor to its
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* resource identifier.
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*/
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static struct CursorName {
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char *name;
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LPCTSTR id;
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} cursorNames[] = {
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{"starting", IDC_APPSTARTING},
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{"arrow", IDC_ARROW},
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{"ibeam", IDC_IBEAM},
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{"icon", IDC_ICON},
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{"no", IDC_NO},
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{"size", IDC_SIZEALL},
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{"size_ne_sw", IDC_SIZENESW},
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{"size_ns", IDC_SIZENS},
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{"size_nw_se", IDC_SIZENWSE},
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{"size_we", IDC_SIZEWE},
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{"uparrow", IDC_UPARROW},
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{"wait", IDC_WAIT},
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{"crosshair", IDC_CROSS},
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{"fleur", IDC_SIZEALL},
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{"sb_v_double_arrow", IDC_SIZENS},
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{"sb_h_double_arrow", IDC_SIZEWE},
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{"center_ptr", IDC_UPARROW},
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{"watch", IDC_WAIT},
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{"xterm", IDC_IBEAM},
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{"hand2", IDC_HAND},
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{"question_arrow", IDC_HELP},
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{NULL, 0}
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};
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/*
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* The default cursor is used whenever no other cursor has been specified.
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*/
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#define TK_DEFAULT_CURSOR IDC_ARROW
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/*
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*----------------------------------------------------------------------
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*
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* TkGetCursorByName --
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*
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* Retrieve a system cursor by name.
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*
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* Results:
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* Returns a new cursor, or NULL on errors.
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*
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* Side effects:
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* Allocates a new cursor.
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*
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*----------------------------------------------------------------------
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*/
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TkCursor *
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TkGetCursorByName(
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Tcl_Interp *interp, /* Interpreter to use for error reporting. */
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Tk_Window tkwin, /* Window in which cursor will be used. */
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Tk_Uid string) /* Description of cursor. See manual entry for
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* details on legal syntax. */
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{
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struct CursorName *namePtr;
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TkWinCursor *cursorPtr;
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int argc;
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CONST char **argv = NULL;
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/*
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* All cursor names are valid lists of one element (for
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* Unix-compatability), even unadorned system cursor names.
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*/
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if (Tcl_SplitList(interp, string, &argc, &argv) != TCL_OK) {
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return NULL;
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}
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if (argc == 0) {
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goto badCursorSpec;
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}
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cursorPtr = (TkWinCursor *) ckalloc(sizeof(TkWinCursor));
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cursorPtr->info.cursor = (Tk_Cursor) cursorPtr;
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cursorPtr->winCursor = NULL;
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cursorPtr->system = 0;
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if (argv[0][0] == '@') {
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/*
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* Check for system cursor of type @<filename>, where only the name is
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* allowed. This accepts any of:
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* -cursor @/winnt/cursors/globe.ani
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* -cursor @C:/Winnt/cursors/E_arrow.cur
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* -cursor {@C:/Program\ Files/Cursors/bart.ani}
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* -cursor {{@C:/Program Files/Cursors/bart.ani}}
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* -cursor [list @[file join "C:/Program Files" Cursors bart.ani]]
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*/
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if (Tcl_IsSafe(interp)) {
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Tcl_AppendResult(interp, "can't get cursor from a file in",
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" a safe interpreter", NULL);
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ckfree((char *) argv);
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ckfree((char *) cursorPtr);
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return NULL;
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}
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cursorPtr->winCursor = LoadCursorFromFile(&(argv[0][1]));
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} else {
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/*
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* Check for the cursor in the system cursor set.
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*/
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for (namePtr = cursorNames; namePtr->name != NULL; namePtr++) {
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if (strcmp(namePtr->name, argv[0]) == 0) {
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cursorPtr->winCursor = LoadCursor(NULL, namePtr->id);
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break;
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}
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}
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if (cursorPtr->winCursor == NULL) {
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/*
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* Hmm, it is not in the system cursor set. Check to see if it is
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* one of our application resources.
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*/
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cursorPtr->winCursor = LoadCursor(Tk_GetHINSTANCE(), argv[0]);
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} else {
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cursorPtr->system = 1;
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}
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}
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if (cursorPtr->winCursor == NULL) {
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ckfree((char *) cursorPtr);
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badCursorSpec:
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ckfree((char *) argv);
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Tcl_AppendResult(interp, "bad cursor spec \"", string, "\"", NULL);
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return NULL;
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} else {
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ckfree((char *) argv);
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return (TkCursor *) cursorPtr;
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}
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkCreateCursorFromData --
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*
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* Creates a cursor from the source and mask bits.
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*
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* Results:
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* Returns a new cursor, or NULL on errors.
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*
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* Side effects:
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* Allocates a new cursor.
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*
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*----------------------------------------------------------------------
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*/
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TkCursor *
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TkCreateCursorFromData(
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Tk_Window tkwin, /* Window in which cursor will be used. */
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CONST char *source, /* Bitmap data for cursor shape. */
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CONST char *mask, /* Bitmap data for cursor mask. */
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int width, int height, /* Dimensions of cursor. */
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int xHot, int yHot, /* Location of hot-spot in cursor. */
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XColor fgColor, /* Foreground color for cursor. */
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XColor bgColor) /* Background color for cursor. */
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{
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return NULL;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpFreeCursor --
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*
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* This procedure is called to release a cursor allocated by
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* TkGetCursorByName.
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*
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* Results:
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* None.
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*
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* Side effects:
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* The cursor data structure is deallocated.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpFreeCursor(
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TkCursor *cursorPtr)
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{
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/* TkWinCursor *winCursorPtr = (TkWinCursor *) cursorPtr; */
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpSetCursor --
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*
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* Set the global cursor. If the cursor is None, then use the default Tk
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* cursor.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Changes the mouse cursor.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpSetCursor(
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TkpCursor cursor)
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{
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HCURSOR hcursor;
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TkWinCursor *winCursor = (TkWinCursor *) cursor;
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if (winCursor == NULL || winCursor->winCursor == NULL) {
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hcursor = LoadCursor(NULL, TK_DEFAULT_CURSOR);
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} else {
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hcursor = winCursor->winCursor;
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}
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if (hcursor != NULL) {
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SetCursor(hcursor);
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}
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}
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/*
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* Local Variables:
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* mode: c
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* c-basic-offset: 4
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* fill-column: 78
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* End:
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*/
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