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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}
- };
-