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/* X11toggle - toggle items for X11 dialogs */
/* XLISP-STAT 2.1 Copyright (c) 1990, by Luke Tierney */
/* Additions to Xlisp 2.1, Copyright (c) 1989 by David Michael Betz */
/* You may give out copies of this software; for conditions see the */
/* file COPYING included with this distribution. */
/***********************************************************************/
/** **/
/** General Includes and Definitions **/
/** **/
/***********************************************************************/
#include "dialogs.h"
extern Display *StX11Display();
extern Point DialogStringSize();
extern LVAL StX11ItemObject();
extern char *checkstring();
extern LVAL s_window_id;
typedef struct {
unsigned long fore, back;
} ColorPair;
/* layout defines */
# define TOGGLE_PAD 20
# define TOGGLE_MARK_HEIGHT 16
/***********************************************************************/
/** **/
/** Global Variables **/
/** **/
/***********************************************************************/
/* configuration parameters - should be set using the defaults database */
extern XFontStruct *DialogFont;
extern unsigned long DialogBorderColor;
extern ColorPair DialogC;
extern unsigned int dialog_border_width;
extern int min_toggle_height;
extern GC DialogGC, DialogRGC;
extern XContext ObjectContext;
extern Pixmap ToggleOffPM, ToggleOnPM;
/***********************************************************************/
/** **/
/** Toggle Items **/
/** **/
/***********************************************************************/
static VOID draw_toggle(dpy, win, item)
Display *dpy;
Window win;
LVAL item;
{
char *text;
int x, y, len, ascent, on;
Pixmap mark;
ascent = DialogFont->max_bounds.ascent;
text = checkstring(slot_value(item, s_text));
on = (slot_value(item, s_value) != NIL) ? TRUE : FALSE;
mark = (on) ? ToggleOnPM : ToggleOffPM;
XCopyPlane(dpy, mark, win, DialogGC,
0, 0, TOGGLE_MARK_HEIGHT, TOGGLE_MARK_HEIGHT,
0, max(0, ascent - TOGGLE_MARK_HEIGHT), 1);
x = TOGGLE_PAD;
y = max(TOGGLE_MARK_HEIGHT, ascent);
len = strlen(text);
XDrawString(dpy, win, DialogGC, x, y, text, len);
}
static LVAL toggle_handler(report, modal)
XEvent report;
int modal;
{
Display *dpy = StX11Display();
Window win;
LVAL item;
LVAL result = NIL;
win = report.xany.window;
item = StX11ItemObject(dpy, win);
if (item != NIL) {
switch (report.type) {
case Expose:
draw_toggle(dpy, win, item);
break;
case ButtonPress:
set_slot_value(item, s_value,
(slot_value(item, s_value) != NIL) ? NIL : s_true);
draw_toggle(dpy, win, item);
if (! modal) send_message(item, sk_do_action);
break;
case ButtonRelease:
break;
default:
break;
}
}
return(result);
}
VOID InstallToggleItem(win, item)
Window win;
LVAL item;
{
Display *dpy = StX11Display();
Point loc, size;
Window toggle;
loc = ListToPoint(slot_value(item, s_location));
size = ListToPoint(slot_value(item, s_size));
toggle = XCreateSimpleWindow(dpy, win, loc.h, loc.v, size.h, size.v,
0, DialogBorderColor, DialogC.back);
XSelectInput(dpy, toggle,
ExposureMask | ButtonPressMask | ButtonReleaseMask);
set_slot_value(item, s_window_id, cvfixnum((FIXTYPE) toggle));
install_dialog_item_handler(dpy, toggle, toggle_handler, item);
if (XSaveContext(dpy, toggle, ObjectContext, (caddr_t) item) != 0)
xlfail("could not install object in window");
}
VOID DeleteToggleItem(win, item)
Window win;
LVAL item;
{
Display *dpy = StX11Display();
Window toggle;
toggle = (Window) getfixnum(slot_value(item, s_window_id));
delete_dialog_item_handler(dpy, toggle);
if (XDeleteContext(dpy, toggle, ObjectContext) != 0)
xlfail("could not delete object context");
set_slot_value(item, s_window_id, NIL);
}
VOID DialogToggleGetDefaultSize(item, width, height)
LVAL item;
int *width, *height;
{
Point sz;
sz = DialogStringSize(checkstring(slot_value(item, s_text)));
if (width != NULL) *width = sz.h + TOGGLE_PAD;
if (height != NULL) *height = max(sz.v, min_toggle_height);
}
LVAL DialogToggleItemValue(item, set, value)
LVAL item, value;
int set;
{
Display *dpy = StX11Display();
LVAL win_id;
if (set) {
set_slot_value(item, s_value, (value != NIL) ? s_true : NIL);
win_id = slot_value(item, s_window_id);
if (fixp(win_id)) draw_toggle(dpy, (Window) getfixnum(win_id), item);
}
return(slot_value(item, s_value));
}
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