/* The lwlib interface to "xlwmenu" menus.
Copyright (C) 1992, 1994 Lucid, Inc.
This file is part of the Lucid Widget Library.
The Lucid Widget Library 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 3 of the
License, or (at your option) any later version.
The Lucid Widget Library 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 the Lucid Widget Library. If not, see
. */
#include
#include /* for abort () */
#include /* for abort () */
#include
#include "lwlib-Xlw.h"
#include "lwlib-utils.h"
#include
#include
#include
#include
#include
#include
#ifdef HAVE_X_WIDGETS
#include "../src/EmacsManager.h"
#endif
#ifdef LWLIB_MENUBARS_LUCID
#include "xlwmenu.h"
#endif
#ifdef LWLIB_SCROLLBARS_LUCID
#include "xlwscrollbar.h"
#endif
#ifdef LWLIB_TABS_LUCID
#ifdef NEED_MOTIF
#include "lwlib-Xm.h"
#endif
#ifdef NEED_ATHENA
#include "lwlib-Xaw.h"
#endif
#include "xlwtabs.h"
#endif
#ifdef LWLIB_MENUBARS_LUCID
/* Menu callbacks */
static void
pre_hook (Widget w, XtPointer client_data, XtPointer call_data)
{
widget_instance* instance = (widget_instance*)client_data;
widget_value* val;
if (w->core.being_destroyed)
return;
val = lw_get_widget_value_for_widget (instance, w);
#if 0
/* #### - this code used to (for some random back_asswards reason) pass
the expression below in the call_data slot. For incremental menu
construction, this needs to go. I can't even figure out why it was done
this way in the first place...it's just a historical weirdism. --Stig */
call_data = (val ? val->call_data : NULL);
#endif
if (val && val->call_data)
abort(); /* #### - the call_data for the top_level
"menubar" widget_value used to be passed
back to the pre_hook. */
if (instance->info->pre_activate_cb)
instance->info->pre_activate_cb (w, instance->info->id, call_data);
}
static void
pick_hook (Widget w, XtPointer client_data, XtPointer call_data)
{
widget_instance* instance = (widget_instance*)client_data;
widget_value* contents_val = (widget_value*)call_data;
widget_value* widget_val;
XtPointer widget_arg;
LWLIB_ID id;
lw_callback post_activate_cb;
if (w->core.being_destroyed)
return;
/* Grab these values before running any functions, in case running
the selection_cb causes the widget to be destroyed. */
id = instance->info->id;
post_activate_cb = instance->info->post_activate_cb;
widget_val = lw_get_widget_value_for_widget (instance, w);
widget_arg = widget_val ? widget_val->call_data : NULL;
if (instance->info->selection_cb &&
contents_val &&
contents_val->enabled &&
!contents_val->contents)
instance->info->selection_cb (w, id, contents_val->call_data);
if (post_activate_cb)
post_activate_cb (w, id, widget_arg);
}
/* creation functions */
static Widget
xlw_create_menubar (widget_instance* instance)
{
Arg al [1];
Widget widget;
Xt_SET_ARG (al [0], XtNmenu, instance->info->val);
widget = XtCreateWidget (instance->info->name, xlwMenuWidgetClass,
instance->parent, al, 1);
XtAddCallback (widget, XtNopen, pre_hook, (XtPointer)instance);
XtAddCallback (widget, XtNselect, pick_hook, (XtPointer)instance);
return widget;
}
static Widget
xlw_create_popup_menu (widget_instance* instance)
{
Arg al [2];
Widget popup_shell, widget;
popup_shell = XtCreatePopupShell (instance->info->name,
overrideShellWidgetClass,
instance->parent, NULL, 0);
Xt_SET_ARG (al [0], XtNmenu, instance->info->val);
Xt_SET_ARG (al [1], XtNhorizontal, False);
widget = XtCreateManagedWidget ("popup", xlwMenuWidgetClass,
popup_shell, al, 2);
XtAddCallback (widget, XtNselect, pick_hook, (XtPointer)instance);
return popup_shell;
}
#endif /* LWLIB_MENUBARS_LUCID */
#ifdef LWLIB_SCROLLBARS_LUCID
static void
xlw_scrollbar_callback (Widget widget, XtPointer closure, XtPointer call_data)
{
widget_instance *instance = (widget_instance *) closure;
LWLIB_ID id;
XlwScrollBarCallbackStruct *data =
(XlwScrollBarCallbackStruct *) call_data;
scroll_event event_data;
scrollbar_values *val;
double percent;
if (!instance || widget->core.being_destroyed)
return;
val = (scrollbar_values *) instance->info->val->scrollbar_data;
id = instance->info->id;
percent = (double) (data->value - 1) / (double) (INT_MAX - 1);
event_data.slider_value =
(int) (percent * (double) (val->maximum - val->minimum)) + val->minimum;
if (event_data.slider_value > val->maximum - val->slider_size)
event_data.slider_value = val->maximum - val->slider_size;
else if (event_data.slider_value < val->minimum)
event_data.slider_value = val->minimum;
if (data->event)
{
switch (data->event->type)
{
case KeyPress:
case KeyRelease:
event_data.time = data->event->xkey.time;
break;
case ButtonPress:
case ButtonRelease:
event_data.time = data->event->xbutton.time;
break;
case MotionNotify:
event_data.time = data->event->xmotion.time;
break;
case EnterNotify:
case LeaveNotify:
event_data.time = data->event->xcrossing.time;
break;
default:
event_data.time = 0;
break;
}
}
else
event_data.time = 0;
switch (data->reason)
{
case XmCR_DECREMENT: event_data.action = SCROLLBAR_LINE_UP; break;
case XmCR_INCREMENT: event_data.action = SCROLLBAR_LINE_DOWN; break;
case XmCR_PAGE_DECREMENT: event_data.action = SCROLLBAR_PAGE_UP; break;
case XmCR_PAGE_INCREMENT: event_data.action = SCROLLBAR_PAGE_DOWN; break;
case XmCR_TO_TOP: event_data.action = SCROLLBAR_TOP; break;
case XmCR_TO_BOTTOM: event_data.action = SCROLLBAR_BOTTOM; break;
case XmCR_DRAG: event_data.action = SCROLLBAR_DRAG; break;
case XmCR_VALUE_CHANGED: event_data.action = SCROLLBAR_CHANGE; break;
default: event_data.action = SCROLLBAR_CHANGE; break;
}
if (instance->info->pre_activate_cb)
instance->info->pre_activate_cb (widget, id, (XtPointer) &event_data);
}
#define add_scrollbar_callback(resource) \
XtAddCallback (scrollbar, resource, xlw_scrollbar_callback, (XtPointer) instance)
/* #### Does not yet support horizontal scrollbars. */
static Widget
xlw_create_scrollbar (widget_instance *instance, int vertical)
{
Arg al[20];
int ac = 0;
static XtCallbackRec callbacks[2] =
{ {xlw_scrollbar_callback, NULL}, {NULL, NULL} };
callbacks[0].closure = (XtPointer) instance;
Xt_SET_ARG (al[ac], XmNminimum, 1); ac++;
Xt_SET_ARG (al[ac], XmNmaximum, INT_MAX); ac++;
Xt_SET_ARG (al[ac], XmNincrement, 1); ac++;
Xt_SET_ARG (al[ac], XmNpageIncrement, 1); ac++;
Xt_SET_ARG (al[ac], XmNorientation, (vertical ? XmVERTICAL : XmHORIZONTAL)); ac++;
Xt_SET_ARG (al[ac], XmNdecrementCallback, callbacks); ac++;
Xt_SET_ARG (al[ac], XmNdragCallback, callbacks); ac++;
Xt_SET_ARG (al[ac], XmNincrementCallback, callbacks); ac++;
Xt_SET_ARG (al[ac], XmNpageDecrementCallback, callbacks); ac++;
Xt_SET_ARG (al[ac], XmNpageIncrementCallback, callbacks); ac++;
Xt_SET_ARG (al[ac], XmNtoBottomCallback, callbacks); ac++;
Xt_SET_ARG (al[ac], XmNtoTopCallback, callbacks); ac++;
Xt_SET_ARG (al[ac], XmNvalueChangedCallback, callbacks); ac++;
return XtCreateWidget (instance->info->name, xlwScrollBarWidgetClass,
instance->parent, al, ac);
}
static Widget
xlw_create_vertical_scrollbar (widget_instance *instance)
{
return xlw_create_scrollbar (instance, 1);
}
static Widget
xlw_create_horizontal_scrollbar (widget_instance *instance)
{
return xlw_create_scrollbar (instance, 0);
}
static void
xlw_update_scrollbar (widget_instance *UNUSED (instance), Widget widget,
widget_value *val)
{
if (val->scrollbar_data)
{
scrollbar_values *data = val->scrollbar_data;
int widget_sliderSize, widget_val;
int new_sliderSize, new_value;
double percent;
Arg al [4];
/* First size and position the scrollbar widget. */
Xt_SET_ARG (al [0], XtNx, data->scrollbar_x);
Xt_SET_ARG (al [1], XtNy, data->scrollbar_y);
Xt_SET_ARG (al [2], XtNwidth, data->scrollbar_width);
Xt_SET_ARG (al [3], XtNheight, data->scrollbar_height);
XtSetValues (widget, al, 4);
/* Now size the scrollbar's slider. */
Xt_SET_ARG (al [0], XmNsliderSize, &widget_sliderSize);
Xt_SET_ARG (al [1], XmNvalue, &widget_val);
XtGetValues (widget, al, 2);
percent = (double) data->slider_size /
(double) (data->maximum - data->minimum);
percent = (percent > 1.0 ? 1.0 : percent);
new_sliderSize = (int) ((double) (INT_MAX - 1) * percent);
percent = (double) (data->slider_position - data->minimum) /
(double) (data->maximum - data->minimum);
percent = (percent > 1.0 ? 1.0 : percent);
new_value = (int) ((double) (INT_MAX - 1) * percent);
if (new_sliderSize > INT_MAX - 1)
new_sliderSize = INT_MAX - 1;
else if (new_sliderSize < 1)
new_sliderSize = 1;
if (new_value > (INT_MAX - new_sliderSize))
new_value = INT_MAX - new_sliderSize;
else if (new_value < 1)
new_value = 1;
if (new_sliderSize != widget_sliderSize || new_value != widget_val)
XlwScrollBarSetValues (widget, new_value, new_sliderSize, 1, 1, False);
}
}
#endif /* LWLIB_SCROLLBARS_LUCID */
#ifdef LWLIB_TABS_LUCID
/* tab control
[[ lwlib is such an incredible hairy crock. I just cannot believe
it! There are random dependencies between functions, there is a
total lack of genericity, even though it initially appears to be
generic. It should all be junked and begun again. Building tabs are
an example - in theory we should be able to reuse a lot of the
general stuff because we want to put labels of whatever toolkit we
are using in the tab. Instead we have to hack it by hand. ]]
While lwlib is a hairy crock, whoever wrote that seems to misunderstand
Falk's tab control widget. The tab control widget has *two* kinds of
children: *widgets*, which all occupy a *single* pane below the row of
tabs---this is where the labels created in build_tabs_in_widget go, and
*gadgets*, the tabs themselves, which do *not* draw themselves, but
rather are drawn by the control. In fact, in XEmacs the true widget
children are *never* visible! So this case is not a problem in the
design of lwlib, but rather of Falk's widget. -- sjt */
static void
xlw_tab_control_callback (Widget w, XtPointer client_data, XtPointer call_data)
{
/* call data is the topmost widget */
widget_instance* instance = (widget_instance*)client_data;
Widget top = (Widget)call_data;
char *name = XtName (top);
widget_value* widget_val;
XtPointer widget_arg;
LWLIB_ID id;
lw_callback post_activate_cb;
if (w->core.being_destroyed)
return;
/* Grab these values before running any functions, in case running
the selection_cb causes the widget to be destroyed. */
id = instance->info->id;
post_activate_cb = instance->info->post_activate_cb;
/* search for the widget_val for the selected tab */
for (widget_val = instance->info->val->contents; widget_val;
widget_val = widget_val->next)
{
if (!strcmp (widget_val->name, name))
break;
}
widget_arg = widget_val ? widget_val->call_data : NULL;
if (instance->info->selection_cb &&
widget_val &&
widget_val->enabled &&
!widget_val->contents)
instance->info->selection_cb (w, id, widget_arg);
if (post_activate_cb)
post_activate_cb (w, id, widget_arg);
}
static Widget
xlw_create_tab_control (widget_instance *instance)
{
Arg al[20];
int ac = 0;
Widget tab = 0;
widget_value* val = instance->info->val;
Xt_SET_ARG (al [ac], XtNsensitive, val->enabled); ac++;
Xt_SET_ARG (al [ac], XtNmappedWhenManaged, False); ac++;
Xt_SET_ARG (al [ac], XtNorientation, XtorientHorizontal); ac++;
/* add any args the user supplied for creation time */
lw_add_value_args_to_args (val, al, &ac);
tab = XtCreateManagedWidget (val->name, tabsWidgetClass,
instance->parent, al, ac);
XtRemoveAllCallbacks (tab, XtNcallback);
XtAddCallback (tab, XtNcallback, xlw_tab_control_callback, (XtPointer)instance);
XtManageChild (tab);
return tab;
}
static void build_tabs_in_widget (widget_instance* UNUSED (instance),
Widget widget, widget_value* val)
{
widget_value* cur = val;
Arg al[1];
/* Children are always invisible, don't permit resizing. */
Xt_SET_ARG (al[0], XtNresizable, False);
for (cur = val; cur; cur = cur->next)
{
if (cur->value)
{
Widget w;
#ifdef LWLIB_WIDGETS_MOTIF
w = xm_create_label (widget, cur);
#else
w = xaw_create_label (widget, cur);
#endif
XtSetValues (w, al, 1);
}
cur->change = NO_CHANGE;
}
}
static void
xlw_update_tab_control (widget_instance* instance, Widget widget, widget_value* val)
{
Widget* children;
unsigned int num_children;
Dimension i;
widget_value *cur = 0;
XtRemoveAllCallbacks (widget, XtNcallback);
XtAddCallback (widget, XtNcallback, xlw_tab_control_callback, (XtPointer)instance);
if (val->change == STRUCTURAL_CHANGE
||
(val->contents && val->contents->change == STRUCTURAL_CHANGE))
{
destroy_all_children (widget);
build_tabs_in_widget (instance, widget, val->contents);
}
children = XtCompositeChildren (widget, &num_children);
if (children)
{
for (i = 0, cur = val->contents; i < (int) num_children; i++)
{
if (!cur)
abort ();
if (children [i]->core.being_destroyed
|| strcmp (XtName (children [i]), cur->name))
continue;
#ifdef NEED_MOTIF
if (lw_motif_widget_p (children [i]))
xm_update_one_widget (instance, children [i], cur, False);
#endif
#ifdef NEED_ATHENA
if (lw_xaw_widget_p (children [i]))
xaw_update_one_widget (instance, children [i], cur, False);
#endif
cur = cur->next;
}
XtFree ((char *) children);
}
if (cur)
abort ();
}
#endif /* LWLIB_TABS_LUCID */
#ifdef HAVE_X_WIDGETS
static Widget
xlw_create_clip_window (widget_instance *instance)
{
Arg al[20];
int ac = 0;
Widget clip = 0;
widget_value* val = instance->info->val;
Xt_SET_ARG (al [ac], XtNmappedWhenManaged, False); ac++;
Xt_SET_ARG (al [ac], XtNsensitive, True); ac++;
/* add any args the user supplied for creation time */
lw_add_value_args_to_args (val, al, &ac);
/* Create a clip window to contain the subwidget. Incredibly the
XEmacs manager seems to be the most appropriate widget for
this. Nothing else is simple enough and yet does what is
required. */
clip = XtCreateManagedWidget (val->name,
emacsManagerWidgetClass,
instance->parent, al, ac);
return clip;
}
#endif
const widget_creation_entry
xlw_creation_table [] =
{
#ifdef LWLIB_MENUBARS_LUCID
{"menubar", xlw_create_menubar},
{"popup", xlw_create_popup_menu},
#endif
#ifdef LWLIB_SCROLLBARS_LUCID
{"vertical-scrollbar", xlw_create_vertical_scrollbar},
{"horizontal-scrollbar", xlw_create_horizontal_scrollbar},
#endif
#ifdef LWLIB_TABS_LUCID
{"tab-control", xlw_create_tab_control},
#endif
#ifdef HAVE_X_WIDGETS
{"clip-window", xlw_create_clip_window},
#endif
{NULL, NULL}
};
Boolean
lw_lucid_widget_p (Widget widget)
{
WidgetClass the_class = XtClass (widget);
#ifdef LWLIB_MENUBARS_LUCID
if (the_class == xlwMenuWidgetClass)
return True;
#endif
#ifdef LWLIB_SCROLLBARS_LUCID
if (the_class == xlwScrollBarWidgetClass)
return True;
#endif
#ifdef LWLIB_TABS_LUCID
if (the_class == tabsWidgetClass)
return True;
#endif
#ifdef LWLIB_MENUBARS_LUCID
if (the_class == overrideShellWidgetClass)
return
XtClass (((CompositeWidget)widget)->composite.children [0])
== xlwMenuWidgetClass;
#endif
#ifdef HAVE_X_WIDGETS
if (the_class == emacsManagerWidgetClass)
return True;
#endif
return False;
}
void
xlw_update_one_widget (widget_instance* instance, Widget widget,
widget_value* val, Boolean UNUSED (deep_p))
{
WidgetClass class_ = XtClass (widget);
if (0)
;
#ifdef LWLIB_MENUBARS_LUCID
else if (class_ == xlwMenuWidgetClass)
{
XlwMenuWidget mw;
if (XtIsShell (widget))
mw = (XlwMenuWidget)((CompositeWidget)widget)->composite.children [0];
else
mw = (XlwMenuWidget)widget;
Xt_SET_VALUE (widget, XtNmenu, val); /* #### mw unused! */
}
#endif
#ifdef LWLIB_SCROLLBARS_LUCID
else if (class_ == xlwScrollBarWidgetClass)
{
xlw_update_scrollbar (instance, widget, val);
}
#endif
#ifdef LWLIB_TABS_LUCID
else if (class_ == tabsWidgetClass)
{
xlw_update_tab_control (instance, widget, val);
}
#endif
/* Lastly update our global arg values. */
if (val->args && val->args->nargs)
XtSetValues (widget, val->args->args, val->args->nargs);
}
void
xlw_update_one_value (widget_instance* UNUSED (instance),
Widget UNUSED (widget), widget_value* UNUSED (val))
{
}
void
xlw_pop_instance (widget_instance* UNUSED (instance), Boolean UNUSED (up))
{
}
#ifdef LWLIB_MENUBARS_LUCID
void
xlw_popup_menu (Widget widget, XEvent *event)
{
XlwMenuWidget mw;
if (!XtIsShell (widget))
return;
if (event->type == ButtonPress || event->type == ButtonRelease)
{
mw = (XlwMenuWidget)((CompositeWidget)widget)->composite.children [0];
xlw_pop_up_menu (mw, (XButtonPressedEvent *)event);
}
else
abort ();
}
#endif /* LWLIB_MENUBARS_LUCID */
/* Destruction of instances */
void
xlw_destroy_instance (widget_instance* instance)
{
if (instance->widget)
XtDestroyWidget (instance->widget);
}