397 lines
11 KiB
C
397 lines
11 KiB
C
|
/*
|
|||
|
|
* tkUnixCursor.c --
|
|||
|
|
*
|
|||
|
|
* This file contains X specific cursor manipulation 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.
|
|||
|
|
*
|
|||
|
|
* SCCS: @(#) tkUnixCursor.c 1.3 96/07/23 16:56:24
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
#include "tkPort.h"
|
|||
|
|
#include "tkInt.h"
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* The following data structure is a superset of the TkCursor structure
|
|||
|
|
* defined in tkCursor.c. Each system specific cursor module will define
|
|||
|
|
* a different cursor structure. All of these structures must have the
|
|||
|
|
* same header consisting of the fields in TkCursor.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
typedef struct {
|
|||
|
|
TkCursor info; /* Generic cursor info used by tkCursor.c */
|
|||
|
|
Display *display; /* Display for which cursor is valid. */
|
|||
|
|
} TkUnixCursor;
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* The table below is used to map from the name of a cursor to its
|
|||
|
|
* index in the official cursor font:
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
static struct CursorName {
|
|||
|
|
char *name;
|
|||
|
|
unsigned int shape;
|
|||
|
|
} cursorNames[] = {
|
|||
|
|
{"X_cursor", XC_X_cursor},
|
|||
|
|
{"arrow", XC_arrow},
|
|||
|
|
{"based_arrow_down", XC_based_arrow_down},
|
|||
|
|
{"based_arrow_up", XC_based_arrow_up},
|
|||
|
|
{"boat", XC_boat},
|
|||
|
|
{"bogosity", XC_bogosity},
|
|||
|
|
{"bottom_left_corner", XC_bottom_left_corner},
|
|||
|
|
{"bottom_right_corner", XC_bottom_right_corner},
|
|||
|
|
{"bottom_side", XC_bottom_side},
|
|||
|
|
{"bottom_tee", XC_bottom_tee},
|
|||
|
|
{"box_spiral", XC_box_spiral},
|
|||
|
|
{"center_ptr", XC_center_ptr},
|
|||
|
|
{"circle", XC_circle},
|
|||
|
|
{"clock", XC_clock},
|
|||
|
|
{"coffee_mug", XC_coffee_mug},
|
|||
|
|
{"cross", XC_cross},
|
|||
|
|
{"cross_reverse", XC_cross_reverse},
|
|||
|
|
{"crosshair", XC_crosshair},
|
|||
|
|
{"diamond_cross", XC_diamond_cross},
|
|||
|
|
{"dot", XC_dot},
|
|||
|
|
{"dotbox", XC_dotbox},
|
|||
|
|
{"double_arrow", XC_double_arrow},
|
|||
|
|
{"draft_large", XC_draft_large},
|
|||
|
|
{"draft_small", XC_draft_small},
|
|||
|
|
{"draped_box", XC_draped_box},
|
|||
|
|
{"exchange", XC_exchange},
|
|||
|
|
{"fleur", XC_fleur},
|
|||
|
|
{"gobbler", XC_gobbler},
|
|||
|
|
{"gumby", XC_gumby},
|
|||
|
|
{"hand1", XC_hand1},
|
|||
|
|
{"hand2", XC_hand2},
|
|||
|
|
{"heart", XC_heart},
|
|||
|
|
{"icon", XC_icon},
|
|||
|
|
{"iron_cross", XC_iron_cross},
|
|||
|
|
{"left_ptr", XC_left_ptr},
|
|||
|
|
{"left_side", XC_left_side},
|
|||
|
|
{"left_tee", XC_left_tee},
|
|||
|
|
{"leftbutton", XC_leftbutton},
|
|||
|
|
{"ll_angle", XC_ll_angle},
|
|||
|
|
{"lr_angle", XC_lr_angle},
|
|||
|
|
{"man", XC_man},
|
|||
|
|
{"middlebutton", XC_middlebutton},
|
|||
|
|
{"mouse", XC_mouse},
|
|||
|
|
{"pencil", XC_pencil},
|
|||
|
|
{"pirate", XC_pirate},
|
|||
|
|
{"plus", XC_plus},
|
|||
|
|
{"question_arrow", XC_question_arrow},
|
|||
|
|
{"right_ptr", XC_right_ptr},
|
|||
|
|
{"right_side", XC_right_side},
|
|||
|
|
{"right_tee", XC_right_tee},
|
|||
|
|
{"rightbutton", XC_rightbutton},
|
|||
|
|
{"rtl_logo", XC_rtl_logo},
|
|||
|
|
{"sailboat", XC_sailboat},
|
|||
|
|
{"sb_down_arrow", XC_sb_down_arrow},
|
|||
|
|
{"sb_h_double_arrow", XC_sb_h_double_arrow},
|
|||
|
|
{"sb_left_arrow", XC_sb_left_arrow},
|
|||
|
|
{"sb_right_arrow", XC_sb_right_arrow},
|
|||
|
|
{"sb_up_arrow", XC_sb_up_arrow},
|
|||
|
|
{"sb_v_double_arrow", XC_sb_v_double_arrow},
|
|||
|
|
{"shuttle", XC_shuttle},
|
|||
|
|
{"sizing", XC_sizing},
|
|||
|
|
{"spider", XC_spider},
|
|||
|
|
{"spraycan", XC_spraycan},
|
|||
|
|
{"star", XC_star},
|
|||
|
|
{"target", XC_target},
|
|||
|
|
{"tcross", XC_tcross},
|
|||
|
|
{"top_left_arrow", XC_top_left_arrow},
|
|||
|
|
{"top_left_corner", XC_top_left_corner},
|
|||
|
|
{"top_right_corner", XC_top_right_corner},
|
|||
|
|
{"top_side", XC_top_side},
|
|||
|
|
{"top_tee", XC_top_tee},
|
|||
|
|
{"trek", XC_trek},
|
|||
|
|
{"ul_angle", XC_ul_angle},
|
|||
|
|
{"umbrella", XC_umbrella},
|
|||
|
|
{"ur_angle", XC_ur_angle},
|
|||
|
|
{"watch", XC_watch},
|
|||
|
|
{"xterm", XC_xterm},
|
|||
|
|
{NULL, 0}
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* Font to use for cursors:
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
#ifndef CURSORFONT
|
|||
|
|
#define CURSORFONT "cursor"
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
*----------------------------------------------------------------------
|
|||
|
|
*
|
|||
|
|
* TkGetCursorByName --
|
|||
|
|
*
|
|||
|
|
* Retrieve a cursor by name. Parse the cursor name into fields
|
|||
|
|
* and create a cursor, either from the standard cursor font or
|
|||
|
|
* from bitmap files.
|
|||
|
|
*
|
|||
|
|
* 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. */
|
|||
|
|
{
|
|||
|
|
TkUnixCursor *cursorPtr = NULL;
|
|||
|
|
Cursor cursor = None;
|
|||
|
|
int argc;
|
|||
|
|
char **argv = NULL;
|
|||
|
|
Pixmap source = None;
|
|||
|
|
Pixmap mask = None;
|
|||
|
|
Display *display = Tk_Display(tkwin);
|
|||
|
|
|
|||
|
|
if (Tcl_SplitList(interp, string, &argc, &argv) != TCL_OK) {
|
|||
|
|
return NULL;
|
|||
|
|
}
|
|||
|
|
if (argc == 0) {
|
|||
|
|
goto badString;
|
|||
|
|
}
|
|||
|
|
if (argv[0][0] != '@') {
|
|||
|
|
XColor fg, bg;
|
|||
|
|
unsigned int maskIndex;
|
|||
|
|
register struct CursorName *namePtr;
|
|||
|
|
TkDisplay *dispPtr;
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* The cursor is to come from the standard cursor font. If one
|
|||
|
|
* arg, it is cursor name (use black and white for fg and bg).
|
|||
|
|
* If two args, they are name and fg color (ignore mask). If
|
|||
|
|
* three args, they are name, fg, bg. Some of the code below
|
|||
|
|
* is stolen from the XCreateFontCursor Xlib procedure.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
if (argc > 3) {
|
|||
|
|
goto badString;
|
|||
|
|
}
|
|||
|
|
for (namePtr = cursorNames; ; namePtr++) {
|
|||
|
|
if (namePtr->name == NULL) {
|
|||
|
|
goto badString;
|
|||
|
|
}
|
|||
|
|
if ((namePtr->name[0] == argv[0][0])
|
|||
|
|
&& (strcmp(namePtr->name, argv[0]) == 0)) {
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
maskIndex = namePtr->shape + 1;
|
|||
|
|
if (argc == 1) {
|
|||
|
|
fg.red = fg.green = fg.blue = 0;
|
|||
|
|
bg.red = bg.green = bg.blue = 65535;
|
|||
|
|
} else {
|
|||
|
|
if (XParseColor(display, Tk_Colormap(tkwin), argv[1],
|
|||
|
|
&fg) == 0) {
|
|||
|
|
Tcl_AppendResult(interp, "invalid color name \"", argv[1],
|
|||
|
|
"\"", (char *) NULL);
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
if (argc == 2) {
|
|||
|
|
bg.red = bg.green = bg.blue = 0;
|
|||
|
|
maskIndex = namePtr->shape;
|
|||
|
|
} else {
|
|||
|
|
if (XParseColor(display, Tk_Colormap(tkwin), argv[2],
|
|||
|
|
&bg) == 0) {
|
|||
|
|
Tcl_AppendResult(interp, "invalid color name \"", argv[2],
|
|||
|
|
"\"", (char *) NULL);
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
dispPtr = ((TkWindow *) tkwin)->dispPtr;
|
|||
|
|
if (dispPtr->cursorFont == None) {
|
|||
|
|
dispPtr->cursorFont = XLoadFont(display, CURSORFONT);
|
|||
|
|
if (dispPtr->cursorFont == None) {
|
|||
|
|
interp->result = "couldn't load cursor font";
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
cursor = XCreateGlyphCursor(display, dispPtr->cursorFont,
|
|||
|
|
dispPtr->cursorFont, namePtr->shape, maskIndex,
|
|||
|
|
&fg, &bg);
|
|||
|
|
} else {
|
|||
|
|
int width, height, maskWidth, maskHeight;
|
|||
|
|
int xHot, yHot, dummy1, dummy2;
|
|||
|
|
XColor fg, bg;
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* The cursor is to be created by reading bitmap files. There
|
|||
|
|
* should be either two elements in the list (source, color) or
|
|||
|
|
* four (source mask fg bg).
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
if ((argc != 2) && (argc != 4)) {
|
|||
|
|
goto badString;
|
|||
|
|
}
|
|||
|
|
if (XReadBitmapFile(display,
|
|||
|
|
RootWindowOfScreen(Tk_Screen(tkwin)), &argv[0][1],
|
|||
|
|
(unsigned int *) &width, (unsigned int *) &height,
|
|||
|
|
&source, &xHot, &yHot) != BitmapSuccess) {
|
|||
|
|
Tcl_AppendResult(interp, "cleanup reading bitmap file \"",
|
|||
|
|
&argv[0][1], "\"", (char *) NULL);
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
if ((xHot < 0) || (yHot < 0) || (xHot >= width) || (yHot >= height)) {
|
|||
|
|
Tcl_AppendResult(interp, "bad hot spot in bitmap file \"",
|
|||
|
|
&argv[0][1], "\"", (char *) NULL);
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
if (argc == 2) {
|
|||
|
|
if (XParseColor(display, Tk_Colormap(tkwin), argv[1],
|
|||
|
|
&fg) == 0) {
|
|||
|
|
Tcl_AppendResult(interp, "invalid color name \"",
|
|||
|
|
argv[1], "\"", (char *) NULL);
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
cursor = XCreatePixmapCursor(display, source, source,
|
|||
|
|
&fg, &fg, (unsigned) xHot, (unsigned) yHot);
|
|||
|
|
} else {
|
|||
|
|
if (XReadBitmapFile(display,
|
|||
|
|
RootWindowOfScreen(Tk_Screen(tkwin)), argv[1],
|
|||
|
|
(unsigned int *) &maskWidth, (unsigned int *) &maskHeight,
|
|||
|
|
&mask, &dummy1, &dummy2) != BitmapSuccess) {
|
|||
|
|
Tcl_AppendResult(interp, "cleanup reading bitmap file \"",
|
|||
|
|
argv[1], "\"", (char *) NULL);
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
if ((maskWidth != width) && (maskHeight != height)) {
|
|||
|
|
interp->result =
|
|||
|
|
"source and mask bitmaps have different sizes";
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
if (XParseColor(display, Tk_Colormap(tkwin), argv[2],
|
|||
|
|
&fg) == 0) {
|
|||
|
|
Tcl_AppendResult(interp, "invalid color name \"", argv[2],
|
|||
|
|
"\"", (char *) NULL);
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
if (XParseColor(display, Tk_Colormap(tkwin), argv[3],
|
|||
|
|
&bg) == 0) {
|
|||
|
|
Tcl_AppendResult(interp, "invalid color name \"", argv[3],
|
|||
|
|
"\"", (char *) NULL);
|
|||
|
|
goto cleanup;
|
|||
|
|
}
|
|||
|
|
cursor = XCreatePixmapCursor(display, source, mask,
|
|||
|
|
&fg, &bg, (unsigned) xHot, (unsigned) yHot);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (cursor != None) {
|
|||
|
|
cursorPtr = (TkUnixCursor *) ckalloc(sizeof(TkUnixCursor));
|
|||
|
|
cursorPtr->info.cursor = (Tk_Cursor) cursor;
|
|||
|
|
cursorPtr->display = display;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
cleanup:
|
|||
|
|
if (argv != NULL) {
|
|||
|
|
ckfree((char *) argv);
|
|||
|
|
}
|
|||
|
|
if (source != None) {
|
|||
|
|
Tk_FreePixmap(display, source);
|
|||
|
|
}
|
|||
|
|
if (mask != None) {
|
|||
|
|
Tk_FreePixmap(display, mask);
|
|||
|
|
}
|
|||
|
|
return (TkCursor *) cursorPtr;
|
|||
|
|
|
|||
|
|
|
|||
|
|
badString:
|
|||
|
|
Tcl_AppendResult(interp, "bad cursor spec \"", string, "\"",
|
|||
|
|
(char *) NULL);
|
|||
|
|
return NULL;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
*----------------------------------------------------------------------
|
|||
|
|
*
|
|||
|
|
* 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. */
|
|||
|
|
{
|
|||
|
|
Cursor cursor;
|
|||
|
|
Pixmap sourcePixmap, maskPixmap;
|
|||
|
|
TkUnixCursor *cursorPtr = NULL;
|
|||
|
|
Display *display = Tk_Display(tkwin);
|
|||
|
|
|
|||
|
|
sourcePixmap = XCreateBitmapFromData(display,
|
|||
|
|
RootWindowOfScreen(Tk_Screen(tkwin)), source, (unsigned) width,
|
|||
|
|
(unsigned) height);
|
|||
|
|
maskPixmap = XCreateBitmapFromData(display,
|
|||
|
|
RootWindowOfScreen(Tk_Screen(tkwin)), mask, (unsigned) width,
|
|||
|
|
(unsigned) height);
|
|||
|
|
cursor = XCreatePixmapCursor(display, sourcePixmap,
|
|||
|
|
maskPixmap, &fgColor, &bgColor, (unsigned) xHot, (unsigned) yHot);
|
|||
|
|
Tk_FreePixmap(display, sourcePixmap);
|
|||
|
|
Tk_FreePixmap(display, maskPixmap);
|
|||
|
|
|
|||
|
|
if (cursor != None) {
|
|||
|
|
cursorPtr = (TkUnixCursor *) ckalloc(sizeof(TkUnixCursor));
|
|||
|
|
cursorPtr->info.cursor = (Tk_Cursor) cursor;
|
|||
|
|
cursorPtr->display = display;
|
|||
|
|
}
|
|||
|
|
return (TkCursor *) cursorPtr;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
*----------------------------------------------------------------------
|
|||
|
|
*
|
|||
|
|
* TkFreeCursor --
|
|||
|
|
*
|
|||
|
|
* This procedure is called to release a cursor allocated by
|
|||
|
|
* TkGetCursorByName.
|
|||
|
|
*
|
|||
|
|
* Results:
|
|||
|
|
* None.
|
|||
|
|
*
|
|||
|
|
* Side effects:
|
|||
|
|
* The cursor data structure is deallocated.
|
|||
|
|
*
|
|||
|
|
*----------------------------------------------------------------------
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
void
|
|||
|
|
TkFreeCursor(cursorPtr)
|
|||
|
|
TkCursor *cursorPtr;
|
|||
|
|
{
|
|||
|
|
TkUnixCursor *unixCursorPtr = (TkUnixCursor *) cursorPtr;
|
|||
|
|
XFreeCursor(unixCursorPtr->display, (Cursor) unixCursorPtr->info.cursor);
|
|||
|
|
Tk_FreeXId(unixCursorPtr->display, (XID) unixCursorPtr->info.cursor);
|
|||
|
|
ckfree((char *) unixCursorPtr);
|
|||
|
|
}
|