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/* The lwlib interface to Athena widgets.
Copyright (C) 1993, 1994 Free Software Foundation, 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 1, 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 GNU Emacs; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdio.h>
#include "lwlib-Xaw.h"
#include <X11/StringDefs.h>
#include <X11/IntrinsicP.h>
#include <X11/CoreP.h>
#include <X11/Shell.h>
#include <X11/Xaw/Scrollbar.h>
#include <X11/Xaw/Dialog.h>
#include <X11/Xaw/Form.h>
#include <X11/Xaw/Command.h>
#include <X11/Xaw/Label.h>
#include <X11/Xatom.h>
static void xaw_generic_callback (Widget, XtPointer, XtPointer);
Boolean
lw_xaw_widget_p (Widget widget)
{
return (XtIsSubclass (widget, scrollbarWidgetClass) ||
XtIsSubclass (widget, dialogWidgetClass));
}
static void
xaw_update_scrollbar (widget_instance *instance, Widget widget,
widget_value *val)
{
if (val->scrollbar_data)
{
scrollbar_values *data = val->scrollbar_data;
float widget_shown, widget_topOfThumb;
float new_shown, new_topOfThumb;
/*
* First size and position the scrollbar widget.
*/
XtVaSetValues (widget,
XtNx, data->scrollbar_x,
XtNy, data->scrollbar_y,
XtNwidth, data->scrollbar_width,
XtNheight, data->scrollbar_height,
0);
/*
* Now the size the scrollbar's slider.
*/
XtVaGetValues (widget,
XtNtopOfThumb, &widget_topOfThumb,
XtNshown, &widget_shown,
0);
new_shown = (double) data->slider_size /
(double) (data->maximum - data->minimum);
new_topOfThumb = (double) (data->slider_position - data->minimum) /
(double) (data->maximum - data->minimum);
if (new_shown > 1.0)
new_shown = 1.0;
if (new_shown < 0)
new_shown = 0;
if (new_topOfThumb > 1.0)
new_topOfThumb = 1.0;
if (new_topOfThumb < 0)
new_topOfThumb = 0;
if (new_shown != widget_shown || new_topOfThumb != widget_topOfThumb)
XawScrollbarSetThumb (widget, new_topOfThumb, new_shown);
}
}
void
xaw_update_one_widget (widget_instance *instance, Widget widget,
widget_value *val, Boolean deep_p)
{
if (XtIsSubclass (widget, scrollbarWidgetClass))
{
xaw_update_scrollbar (instance, widget, val);
}
else if (XtIsSubclass (widget, dialogWidgetClass))
{
XtVaSetValues (widget, XtNlabel, val->contents->value, 0);
}
else if (XtIsSubclass (widget, commandWidgetClass))
{
Dimension bw = 0;
XtVaGetValues (widget, XtNborderWidth, &bw, 0);
if (bw == 0)
/* Don't let buttons end up with 0 borderwidth, that's ugly...
Yeah, all this should really be done through app-defaults files
or fallback resources, but that's a whole different can of worms
that I don't feel like opening right now. Making Athena widgets
not look like shit is just entirely too much work.
*/
XtVaSetValues (widget, XtNborderWidth, 1, 0);
XtVaSetValues (widget,
XtNlabel, val->value,
XtNsensitive, val->enabled,
/* Force centered button text. Se above. */
XtNjustify, XtJustifyCenter,
0);
XtRemoveAllCallbacks (widget, XtNcallback);
XtAddCallback (widget, XtNcallback, xaw_generic_callback, instance);
}
}
void
xaw_update_one_value (widget_instance *instance, Widget widget,
widget_value *val)
{
/* This function is not used by the scrollbars and those are the only
Athena widget implemented at the moment so do nothing. */
return;
}
void
xaw_destroy_instance (widget_instance *instance)
{
if (XtIsSubclass (instance->widget, dialogWidgetClass))
/* Need to destroy the Shell too. */
XtDestroyWidget (XtParent (instance->widget));
else
XtDestroyWidget (instance->widget);
}
void
xaw_popup_menu (Widget widget, XEvent *event)
{
/* An Athena menubar has not been implemented. */
return;
}
void
xaw_pop_instance (widget_instance *instance, Boolean up)
{
Widget widget = instance->widget;
if (up)
{
if (XtIsSubclass (widget, dialogWidgetClass))
{
/* For dialogs, we need to call XtPopup on the parent instead
of calling XtManageChild on the widget.
Also we need to hack the shell's WM_PROTOCOLS to get it to
understand what the close box is supposed to do!!
*/
Display *dpy = XtDisplay (widget);
Widget shell = XtParent (widget);
Atom props [2];
int i = 0;
props [i++] = XInternAtom (dpy, "WM_DELETE_WINDOW", False);
XChangeProperty (dpy, XtWindow (shell),
XInternAtom (dpy, "WM_PROTOCOLS", False),
XA_ATOM, 32, PropModeAppend,
(unsigned char *) props, i);
/* Center the widget in its parent. Why isn't this kind of crap
done automatically? I thought toolkits were supposed to make
life easier?
*/
{
unsigned int x, y, w, h;
Widget topmost = instance->parent;
w = shell->core.width;
h = shell->core.height;
while (topmost->core.parent && XtIsRealized (topmost->core.parent))
topmost = topmost->core.parent;
if (topmost->core.width < w) x = topmost->core.x;
else x = topmost->core.x + ((topmost->core.width - w) / 2);
if (topmost->core.height < h) y = topmost->core.y;
else y = topmost->core.y + ((topmost->core.height - h) / 2);
XtMoveWidget (shell, x, y);
}
/* Finally, pop it up. */
XtPopup (shell, XtGrabNonexclusive);
}
else
XtManageChild (widget);
}
else
{
if (XtIsSubclass (widget, dialogWidgetClass))
XtUnmanageChild (XtParent (widget));
else
XtUnmanageChild (widget);
}
}
/* Dialog boxes */
static char overrideTrans[] =
"<Message>WM_PROTOCOLS: lwlib_delete_dialog()";
static XtActionProc wm_delete_window (Widget shell, XtPointer closure,
XtPointer call_data);
static XtActionsRec xaw_actions [] = {
{"lwlib_delete_dialog", (XtActionProc) wm_delete_window}
};
static Boolean actions_initted = False;
static Widget
make_dialog (char* name, Widget parent, Boolean pop_up_p,
char* shell_title, char* icon_name, Boolean text_input_slot,
Boolean radio_box, Boolean list,
int left_buttons, int right_buttons)
{
Arg av [20];
int ac = 0;
int i, bc;
char button_name [255];
Widget shell;
Widget dialog;
Widget button;
XtTranslations override;
if (! pop_up_p) abort (); /* not implemented */
if (text_input_slot) abort (); /* not implemented */
if (radio_box) abort (); /* not implemented */
if (list) abort (); /* not implemented */
if (! actions_initted)
{
XtAppContext app = XtWidgetToApplicationContext (parent);
XtAppAddActions (app, xaw_actions,
sizeof (xaw_actions) / sizeof (xaw_actions[0]));
actions_initted = True;
}
override = XtParseTranslationTable (overrideTrans);
ac = 0;
XtSetArg (av[ac], XtNtitle, shell_title); ac++;
XtSetArg (av[ac], XtNallowShellResize, True); ac++;
XtSetArg (av[ac], XtNtransientFor, parent); ac++;
shell = XtCreatePopupShell ("dialog", transientShellWidgetClass,
parent, av, ac);
XtOverrideTranslations (shell, override);
ac = 0;
dialog = XtCreateManagedWidget (name, dialogWidgetClass, shell, av, ac);
bc = 0;
button = 0;
for (i = 0; i < left_buttons; i++)
{
ac = 0;
XtSetArg (av [ac], XtNfromHoriz, button); ac++;
XtSetArg (av [ac], XtNleft, XtChainLeft); ac++;
XtSetArg (av [ac], XtNright, XtChainLeft); ac++;
XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
XtSetArg (av [ac], XtNresizable, True); ac++;
sprintf (button_name, "button%d", ++bc);
button = XtCreateManagedWidget (button_name, commandWidgetClass,
dialog, av, ac);
}
if (right_buttons)
{
/* Create a separator
I want the separator to take up the slack between the buttons on
the right and the buttons on the left (that is I want the buttons
after the separator to be packed against the right edge of the
window) but I can't seem to make it do it.
*/
ac = 0;
XtSetArg (av [ac], XtNfromHoriz, button); ac++;
/* XtSetArg (av [ac], XtNfromVert, XtNameToWidget (dialog, "label")); ac++; */
XtSetArg (av [ac], XtNleft, XtChainLeft); ac++;
XtSetArg (av [ac], XtNright, XtChainRight); ac++;
XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
XtSetArg (av [ac], XtNlabel, ""); ac++;
XtSetArg (av [ac], XtNwidth, 30); ac++; /* #### aaack!! */
XtSetArg (av [ac], XtNborderWidth, 0); ac++;
XtSetArg (av [ac], XtNshapeStyle, XmuShapeRectangle); ac++;
XtSetArg (av [ac], XtNresizable, False); ac++;
XtSetArg (av [ac], XtNsensitive, False); ac++;
button = XtCreateManagedWidget ("separator",
/* labelWidgetClass, */
/* This has to be Command to fake out
the Dialog widget... */
commandWidgetClass,
dialog, av, ac);
}
for (i = 0; i < right_buttons; i++)
{
ac = 0;
XtSetArg (av [ac], XtNfromHoriz, button); ac++;
XtSetArg (av [ac], XtNleft, XtChainRight); ac++;
XtSetArg (av [ac], XtNright, XtChainRight); ac++;
XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
XtSetArg (av [ac], XtNresizable, True); ac++;
sprintf (button_name, "button%d", ++bc);
button = XtCreateManagedWidget (button_name, commandWidgetClass,
dialog, av, ac);
}
return dialog;
}
Widget
xaw_create_dialog (widget_instance* instance)
{
char *name = instance->info->type;
Widget parent = instance->parent;
Widget widget;
Boolean pop_up_p = instance->pop_up_p;
char *shell_name = 0;
char *icon_name = 0;
Boolean text_input_slot = False;
Boolean radio_box = False;
Boolean list = False;
int total_buttons;
int left_buttons = 0;
int right_buttons = 1;
switch (name [0]) {
case 'E': case 'e':
icon_name = "dbox-error";
shell_name = "Error";
break;
case 'I': case 'i':
icon_name = "dbox-info";
shell_name = "Information";
break;
case 'L': case 'l':
list = True;
icon_name = "dbox-question";
shell_name = "Prompt";
break;
case 'P': case 'p':
text_input_slot = True;
icon_name = "dbox-question";
shell_name = "Prompt";
break;
case 'Q': case 'q':
icon_name = "dbox-question";
shell_name = "Question";
break;
}
total_buttons = name [1] - '0';
if (name [3] == 'T' || name [3] == 't')
{
text_input_slot = False;
radio_box = True;
}
else if (name [3])
right_buttons = name [4] - '0';
left_buttons = total_buttons - right_buttons;
widget = make_dialog (name, parent, pop_up_p,
shell_name, icon_name, text_input_slot, radio_box,
list, left_buttons, right_buttons);
return widget;
}
static void
xaw_generic_callback (Widget widget, XtPointer closure, XtPointer call_data)
{
widget_instance *instance = (widget_instance *) closure;
Widget instance_widget;
LWLIB_ID id;
XtPointer user_data;
lw_internal_update_other_instances (widget, closure, call_data);
if (! instance)
return;
if (widget->core.being_destroyed)
return;
instance_widget = instance->widget;
if (!instance_widget)
return;
id = instance->info->id;
#if 0
user_data = NULL;
XtVaGetValues (widget, XtNuserData, &user_data, 0);
#else
/* Damn! Athena doesn't give us a way to hang our own data on the
buttons, so we have to go find it... I guess this assumes that
all instances of a button have the same call data. */
{
widget_value *val = instance->info->val->contents;
char *name = XtName (widget);
while (val)
{
if (val->name && !strcmp (val->name, name))
break;
val = val->next;
}
if (! val) abort ();
user_data = val->call_data;
}
#endif
if (instance->info->selection_cb)
instance->info->selection_cb (widget, id, user_data);
}
static XtActionProc
wm_delete_window (Widget shell, XtPointer closure, XtPointer call_data)
{
LWLIB_ID id;
Widget *kids = 0;
Widget widget;
if (! XtIsSubclass (shell, shellWidgetClass))
abort ();
XtVaGetValues (shell, XtNchildren, &kids, 0);
if (!kids || !*kids)
abort ();
widget = kids [0];
if (! XtIsSubclass (widget, dialogWidgetClass))
abort ();
id = lw_get_widget_id (widget);
if (! id) abort ();
{
widget_info *info = lw_get_widget_info (id);
if (! info) abort ();
if (info->selection_cb)
info->selection_cb (widget, id, (XtPointer) -1);
}
lw_destroy_all_widgets (id);
return NULL;
}
/* Scrollbars */
#ifdef SCROLLBARS_ATHENA
static void
xaw_scrollbar_scroll (Widget widget, XtPointer closure, XtPointer call_data)
{
widget_instance *instance = (widget_instance *) closure;
LWLIB_ID id;
scroll_event event_data;
if (!instance || widget->core.being_destroyed)
return;
id = instance->info->id;
event_data.slider_value = (int) call_data;
event_data.time = 0;
if ((int) call_data > 0)
event_data.action = SCROLLBAR_PAGE_DOWN;
else
event_data.action = SCROLLBAR_PAGE_UP;
if (instance->info->pre_activate_cb)
instance->info->pre_activate_cb (widget, id, (XtPointer) &event_data);
}
static void
xaw_scrollbar_jump (Widget widget, XtPointer closure, XtPointer call_data)
{
widget_instance *instance = (widget_instance *) closure;
LWLIB_ID id;
scroll_event event_data;
scrollbar_values *val =
(scrollbar_values *) instance->info->val->scrollbar_data;
float percent;
if (!instance || widget->core.being_destroyed)
return;
id = instance->info->id;
percent = * (float *) call_data;
event_data.slider_value =
(int) (percent * (float) (val->maximum - val->minimum)) + val->minimum;
event_data.time = 0;
event_data.action = SCROLLBAR_DRAG;
if (instance->info->pre_activate_cb)
instance->info->pre_activate_cb (widget, id, (XtPointer) &event_data);
}
static Widget
xaw_create_scrollbar (widget_instance *instance, int vertical)
{
Arg av[20];
int ac = 0;
Widget scrollbar;
XtSetArg (av [ac], XtNborderWidth, 0); ac++;
if (vertical)
{
XtSetArg (av [ac], XtNorientation, XtorientVertical); ac++;
}
else
{
XtSetArg (av [ac], XtNorientation, XtorientHorizontal); ac++;
}
scrollbar =
XtCreateWidget (instance->info->name, scrollbarWidgetClass,
instance->parent, av, ac);
XtRemoveAllCallbacks (scrollbar, "jumpProc");
XtRemoveAllCallbacks (scrollbar, "scrollProc");
XtAddCallback (scrollbar, "jumpProc", xaw_scrollbar_jump,
(XtPointer) instance);
XtAddCallback (scrollbar, "scrollProc", xaw_scrollbar_scroll,
(XtPointer) instance);
return scrollbar;
}
static Widget
xaw_create_vertical_scrollbar (widget_instance *instance)
{
return xaw_create_scrollbar (instance, 1);
}
static Widget
xaw_create_horizontal_scrollbar (widget_instance *instance)
{
return xaw_create_scrollbar (instance, 0);
}
#endif /* SCROLLBARS_ATHENA */
widget_creation_entry
xaw_creation_table [] =
{
#ifdef SCROLLBARS_ATHENA
{"vertical-scrollbar", xaw_create_vertical_scrollbar},
{"horizontal-scrollbar", xaw_create_horizontal_scrollbar},
#endif
{NULL, NULL}
};
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.