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/* Radio Widget for XEmacs.
Copyright (C) 1999 Edward A. Falk
This file is part of XEmacs.
XEmacs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Synched up with: Radio.c 1.1 */
/*
* Radio.c - Radio button widget
*
* Author: Edward A. Falk
* falk@falconer.vip.best.com
*
* Date: June 30, 1997
*
*
* Overview: This widget is identical to the Toggle widget in behavior,
* but completely different in appearance. This widget looks like a small
* diamond-shaped button with a label to the right.
*
* To make this work, we subclass the Toggle widget to inherit its behavior
* and to inherit the label-drawing function from which Toggle is
* subclassed. We then completely replace the Expose, Set, Unset
* and Highlight member functions.
*
* The Set and Unset actions are slightly unorthodox. In Toggle's
* ClassInit function, Toggle searches the Command actions list and
* "steals" the Set and Unset functions, caching pointers to them in its
* class record. It then calls these functions from its own ToggleSet
* and Toggle actions.
*
* We, in turn, override the Set() and Unset() actions in our own ClassRec.
*/
#include <config.h>
#include <stdio.h>
#include <X11/IntrinsicP.h>
#include <X11/StringDefs.h>
#include ATHENA_XawInit_h_
#include "../src/xmu.h"
#include "xlwradioP.h"
#define BOX_SIZE 13
#define rclass(w) ((RadioWidgetClass)((w)->core.widget_class))
#ifdef _ThreeDP_h
#define swid(rw) ((rw)->threeD.shadow_width)
#else
#define swid(rw) ((rw)->core.border_width)
#endif
#define bsize(rw) (rclass(rw)->radio_class.dsize)
#define bs(rw) (bsize(rw) + 2*swid(rw))
/****************************************************************
*
* Full class record constant
*
****************************************************************/
/* The translations table from Toggle do not need to be
* overridden by Radio
*/
/* Member functions */
static void RadioInit (Widget, Widget, ArgList, Cardinal *);
static void RadioExpose (Widget, XEvent *, Region);
static void RadioResize (Widget);
static void RadioDestroy (Widget, XtPointer, XtPointer);
static void RadioClassInit (void);
static void RadioClassPartInit (WidgetClass);
static Boolean RadioSetValues (Widget, Widget, Widget, ArgList, Cardinal *);
static void DrawDiamond (Widget);
static XtGeometryResult RadioQueryGeometry (Widget, XtWidgetGeometry *,
XtWidgetGeometry *);
/* Action procs */
static void RadioHighlight (Widget, XEvent *, String *, Cardinal *);
static void RadioUnhighlight (Widget, XEvent *, String *, Cardinal *);
/* internal privates */
static void RadioSize (RadioWidget, Dimension *, Dimension *);
/* The actions table from Toggle is almost perfect, but we need
* to override Highlight, Set, and Unset.
*/
static XtActionsRec actionsList[] =
{
{"highlight", RadioHighlight},
{"unhighlight", RadioUnhighlight},
};
#define SuperClass ((ToggleWidgetClass)&toggleClassRec)
RadioClassRec radioClassRec = {
{
(WidgetClass) SuperClass, /* superclass */
"Radio", /* class_name */
sizeof(RadioRec), /* size */
RadioClassInit, /* class_initialize */
RadioClassPartInit, /* class_part_initialize */
FALSE, /* class_inited */
RadioInit, /* initialize */
NULL, /* initialize_hook */
XtInheritRealize, /* realize */
actionsList, /* actions */
XtNumber(actionsList), /* num_actions */
NULL, /* resources */
0, /* resource_count */
NULLQUARK, /* xrm_class */
TRUE, /* compress_motion */
TRUE, /* compress_exposure */
TRUE, /* compress_enterleave */
FALSE, /* visible_interest */
NULL, /* destroy */
RadioResize, /* resize */
RadioExpose, /* expose */
RadioSetValues, /* set_values */
NULL, /* set_values_hook */
XtInheritSetValuesAlmost, /* set_values_almost */
NULL, /* get_values_hook */
NULL, /* accept_focus */
XtVersion, /* version */
NULL, /* callback_private */
XtInheritTranslations, /* tm_table */
RadioQueryGeometry, /* query_geometry */
XtInheritDisplayAccelerator, /* display_accelerator */
NULL /* extension */
}, /* CoreClass fields initialization */
{
XtInheritChangeSensitive /* change_sensitive */
}, /* SimpleClass fields initialization */
#ifdef _ThreeDP_h
{
XtInheritXaw3dShadowDraw /* field not used */
}, /* ThreeDClass fields initialization */
#endif
{
0 /* field not used */
}, /* LabelClass fields initialization */
{
0 /* field not used */
}, /* CommandClass fields initialization */
{
RadioSet, /* Set Procedure. */
RadioUnset, /* Unset Procedure. */
NULL /* extension. */
}, /* ToggleClass fields initialization */
{
BOX_SIZE,
DrawDiamond, /* draw procedure */
NULL /* extension. */
} /* RadioClass fields initialization */
};
/* for public consumption */
WidgetClass radioWidgetClass = (WidgetClass) &radioClassRec;
/****************************************************************
*
* Class Methods
*
****************************************************************/
static void
RadioClassInit (void)
{
XawInitializeWidgetSet();
}
static void
RadioClassPartInit (WidgetClass class)
{
RadioWidgetClass c = (RadioWidgetClass) class ;
RadioWidgetClass super = (RadioWidgetClass)c->core_class.superclass ;
if( c->radio_class.drawDiamond == NULL ||
c->radio_class.drawDiamond == XtInheritDrawDiamond )
{
c->radio_class.drawDiamond = super->radio_class.drawDiamond ;
}
}
/*ARGSUSED*/
static void
RadioInit (Widget request,
Widget new,
ArgList args,
Cardinal *num_args)
{
RadioWidget rw = (RadioWidget) new;
RadioWidget rw_req = (RadioWidget) request;
Dimension w,h ;
/* Select initial size for the widget */
if( rw_req->core.width == 0 || rw_req->core.height == 0 )
{
RadioSize(rw, &w,&h) ;
if( rw_req->core.width == 0 )
rw->core.width = w ;
if( rw_req->core.height == 0 )
rw->core.height = h ;
rw->core.widget_class->core_class.resize(new) ;
}
}
/* Function Name: RadioDestroy
* Description: Destroy Callback for radio widget.
* Arguments: w - the radio widget that is being destroyed.
* junk, garbage - not used.
* Returns: none.
*/
/* ARGSUSED */
static void
RadioDestroy (Widget w,
XtPointer junk,
XtPointer garbage)
{
/* TODO: get rid of this */
}
/* React to size change from manager. Label widget will compute some internal
* stuff, but we need to override. This code requires knowledge of the
* internals of the Label widget.
*/
static void
RadioResize (Widget w)
{
RadioWidget rw = (RadioWidget)w ;
/* call parent resize proc */
SuperClass->core_class.resize(w) ;
/* override label offset */
switch( rw->label.justify ) {
case XtJustifyLeft:
rw->label.label_x += (bs(rw) + rw->label.internal_width) ;
break ;
case XtJustifyRight:
break ;
case XtJustifyCenter:
default:
rw->label.label_x += (bs(rw) + rw->label.internal_width)/2;
break ;
}
}
/*
* Repaint the widget window.
*/
static void
RadioExpose (Widget w,
XEvent *event,
Region region)
{
RadioWidget rw = (RadioWidget) w ;
Display *dpy = XtDisplay(w) ;
Window win = XtWindow(w) ;
GC gc ;
Pixmap left_bitmap ;
extern WidgetClass labelWidgetClass ;
/* Note: the Label widget examines the region to decide if anything
* needs to be drawn. I'm not sure that this is worth the effort,
* but it bears thinking on.
*/
/* Let label widget draw the label. If there was an lbm_x
* field, we could let Label draw the bitmap too. But there
* isn't, so we need to temporarily remove the bitmap and
* draw it ourself later.
*/
left_bitmap = rw->label.left_bitmap ;
rw->label.left_bitmap = None ;
labelWidgetClass->core_class.expose(w,event,region) ;
rw->label.left_bitmap = left_bitmap ;
/* now manually draw the left bitmap. TODO: 3-d look, xaw-xpm */
gc = XtIsSensitive(w) ? rw->label.normal_GC : rw->label.gray_GC ;
if( left_bitmap != None && rw->label.lbm_width > 0 )
{
/* TODO: handle pixmaps */
XCopyPlane(dpy, left_bitmap, win, gc,
0,0, rw->label.lbm_width, rw->label.lbm_height,
(int) rw->label.internal_width*2 + bs(rw),
(int) rw->label.internal_height + rw->label.lbm_y,
1UL) ;
}
/* Finally, the button itself */
((RadioWidgetClass)(w->core.widget_class))->radio_class.drawDiamond(w) ;
}
/************************************************************
*
* Set specified arguments into widget
*
***********************************************************/
/* ARGSUSED */
static Boolean
RadioSetValues (Widget current,
Widget request,
Widget new,
ArgList args,
Cardinal *num_args)
{
RadioWidget oldrw = (RadioWidget) current;
RadioWidget newrw = (RadioWidget) new;
/* Need to find out if the size of the widget changed. Set new size
* if it did and resize is permitted. One way to determine of the
* widget changed size would be to scan the args list. Another way
* is to compare the old and new widgets and see if any of several
* size-related fields have been changed. The Label widget chose the
* former method, but I choose the latter.
*/
if( newrw->label.resize &&
( newrw->core.width != oldrw->core.width ||
newrw->core.height != oldrw->core.height ||
newrw->core.border_width != oldrw->core.border_width ) )
{
RadioSize(newrw, &newrw->core.width, &newrw->core.height) ;
}
/* The label set values routine can resize the widget. We need to
* recalculate if this is true.
*/
if (newrw->label.label_x != oldrw->label.label_x)
{
RadioResize (new);
}
return FALSE ;
}
static XtGeometryResult
RadioQueryGeometry (Widget w,
XtWidgetGeometry *intended,
XtWidgetGeometry *preferred)
{
RadioWidget rw = (RadioWidget) w;
preferred->request_mode = CWWidth | CWHeight;
RadioSize(rw, &preferred->width, &preferred->height) ;
if ( ((intended->request_mode & (CWWidth | CWHeight))
== (CWWidth | CWHeight)) &&
intended->width == preferred->width &&
intended->height == preferred->height)
return XtGeometryYes;
else if (preferred->width == w->core.width &&
preferred->height == w->core.height)
return XtGeometryNo;
else
return XtGeometryAlmost;
}
/************************************************************
*
* Action Procedures
*
************************************************************/
/*
* Draw the highlight border around the widget. The Command widget
* did this by drawing through a mask. We do it by just drawing the
* border.
*/
static void
DrawHighlight (Widget w,
GC gc)
{
RadioWidget rw = (RadioWidget)w;
XRectangle rects[4] ;
Dimension ht = rw->command.highlight_thickness ;
if( ht <= 0 ||
ht > rw->core.width/2 ||
ht > rw->core.height/2 )
return ;
if( ! XtIsRealized(w) )
return ;
rects[0].x = 0 ; rects[0].y = 0 ;
rects[0].width = rw->core.width ; rects[0].height = ht ;
rects[1].x = 0 ; rects[1].y = rw->core.height - ht ;
rects[1].width = rw->core.width ; rects[1].height = ht ;
rects[2].x = 0 ; rects[2].y = ht ;
rects[2].width = ht ; rects[2].height = rw->core.height - ht*2 ;
rects[3].x = rw->core.width - ht ; rects[3].y = ht ;
rects[3].width = ht ; rects[3].height = rw->core.height - ht*2 ;
XFillRectangles( XtDisplay(w), XtWindow(w), gc, rects, 4) ;
}
static void
RadioHighlight (Widget w,
XEvent *event,
String *params,
Cardinal *num_params)
{
RadioWidget rw = (RadioWidget)w;
DrawHighlight(w, rw->command.normal_GC) ;
}
static void
RadioUnhighlight (Widget w,
XEvent *event,
String *params,
Cardinal *num_params)
{
RadioWidget rw = (RadioWidget)w;
DrawHighlight(w, rw->command.inverse_GC) ;
}
/* ARGSUSED */
void
RadioSet (Widget w,
XEvent *event,
String *params, /* unused */
Cardinal *num_params) /* unused */
{
RadioWidget rw = (RadioWidget)w;
RadioWidgetClass class = (RadioWidgetClass) w->core.widget_class ;
if( rw->command.set )
return ;
rw->command.set = TRUE ;
if( XtIsRealized(w) )
class->radio_class.drawDiamond(w) ;
}
/* ARGSUSED */
void
RadioUnset (Widget w,
XEvent *event,
String *params, /* unused */
Cardinal *num_params) /* unused */
{
RadioWidget rw = (RadioWidget)w;
RadioWidgetClass class = (RadioWidgetClass) w->core.widget_class ;
if( ! rw->command.set )
return ;
rw->command.set = FALSE ;
if( XtIsRealized(w) )
class->radio_class.drawDiamond(w) ;
}
/************************************************************
*
* Internal Procedures
*
************************************************************/
/* Size of widget. Width is size of box plus width of border around
* box plus width of label plus three margins plus the size of the left
* bitmap, if any. Height is max(box,bitmap,label) plus two margins.
*/
static void
RadioSize (RadioWidget rw,
Dimension *w,
Dimension *h)
{
*w = rw->label.label_width + bs(rw) + LEFT_OFFSET(rw) +
3 * rw->label.internal_width ;
*h = Max( rw->label.label_height, bs(rw) ) +
2 * rw->label.internal_width ;
}
static void
DrawDiamond (Widget w)
{
RadioWidget rw = (RadioWidget) w ;
Display *dpy = XtDisplay(w) ;
Window win = XtWindow(w) ;
GC gc, gci ;
XPoint pts[5] ;
Dimension del = bsize(rw)/2 ;
Position x,y ; /* diamond center */
#ifdef _ThreeDP_h
int i=0;
Dimension s = swid(rw) ;
GC top, bot, ctr ;
#endif
gc = XtIsSensitive(w) ? rw->command.normal_GC : rw->label.gray_GC ;
gci = rw->command.set ? rw->command.normal_GC : rw->command.inverse_GC ;
x = rw->label.internal_width + bs(rw)/2 ;
y = rw->core.height/2 ;
#ifdef _ThreeDP_h
if( ! rw->command.set ) {
top = rw->threeD.top_shadow_GC ;
bot = rw->threeD.bot_shadow_GC ;
ctr = gc ; /* TODO */
} else {
top = rw->threeD.bot_shadow_GC ;
bot = rw->threeD.top_shadow_GC ;
ctr = gc ; /* TODO */
}
#endif
pts[0].x = x - del ;
pts[0].y = y ;
pts[1].x = x ;
pts[1].y = y - del ;
pts[2].x = x + del ;
pts[2].y = y ;
pts[3].x = x ;
pts[3].y = y + del ;
pts[4] = pts[0] ;
XFillPolygon(dpy,win,gci, pts,4, Convex, CoordModeOrigin) ;
#ifdef _ThreeDP_h
for(i=0; i<s; ++i) {
XDrawLine(dpy,win,bot, x-i-del,y, x,y+del+i) ;
XDrawLine(dpy,win,bot, x+del+i,y, x,y+del+i) ;
}
for(i=0; i<s; ++i) {
XDrawLine(dpy,win,top, x-del-i,y, x,y-del-i) ;
XDrawLine(dpy,win,top, x+del+i,y, x,y-del-i) ;
}
#else
XDrawLines(dpy,win,gc, pts,5, CoordModeOrigin) ;
#endif
}
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