AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
27c086bd95
gtk2/gtk/gtkcombo.c
Tim Janik bc8e40387b fixed a bug with invoking the quit handlers that could cause them to be 
Sat Mar 14 10:10:46 1998  Tim Janik  <timj@gimp.org>

        * gtk/gtkmain.c (gtk_main): fixed a bug with invoking the quit handlers
                that could cause them to be removed wihout being invoked.
1998-03-14 23:47:48 +00:00

656 lines
19 KiB
C
Raw Blame History

/* gtkcombo - combo widget for gtk+
* Copyright 1997 Paolo Molaro
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <string.h>
#include "gtkarrow.h"
#include "gtklabel.h"
#include "gtklist.h"
#include "gtkentry.h"
#include "gtkbutton.h"
#include "gtklistitem.h"
#include "gtkscrolledwindow.h"
#include "gtkmain.h"
#include "gtksignal.h"
#include "gtkwindow.h"
#include "gdk/gdkkeysyms.h"
#include "gtkcombo.h"
#include "gtkframe.h"
const gchar *gtk_combo_string_key = "gtk-combo-string-value";
#define COMBO_LIST_MAX_HEIGHT 400
static void gtk_combo_class_init (GtkComboClass *klass);
static void gtk_combo_init (GtkCombo *combo);
static void gtk_combo_destroy (GtkObject *combo);
static GtkListItem *gtk_combo_find (GtkCombo *combo);
static gchar * gtk_combo_func (GtkListItem *li);
static gint gtk_combo_focus_idle (GtkCombo *combo);
static gint gtk_combo_entry_focus_out (GtkEntry *entry,
GdkEventFocus *event,
GtkCombo *combo);
static void gtk_combo_get_pos (GtkCombo *combo,
gint *x,
gint *y,
gint *height,
gint *width);
static void gtk_combo_popup_list (GtkButton *button,
GtkCombo *combo);
static void gtk_combo_update_entry (GtkList *list,
GtkCombo *combo);
static void gtk_combo_update_list (GtkEntry *entry,
GtkCombo *combo);
static gint gtk_combo_button_press (GtkWidget *widget,
GdkEvent *event,
GtkCombo *combo);
static gint gtk_combo_list_key_press (GtkWidget *widget,
GdkEventKey *event,
GtkCombo *combo);
static gint gtk_combo_entry_key_press (GtkEntry *widget,
GdkEventKey *event,
GtkCombo *combo);
static void gtk_combo_item_destroy (GtkObject *object);
static void gtk_combo_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static GtkHBoxClass *parent_class = NULL;
void
gtk_combo_class_init (GtkComboClass * klass)
{
GtkObjectClass *oclass;
GtkWidgetClass *widget_class;
parent_class = gtk_type_class (gtk_hbox_get_type ());
oclass = (GtkObjectClass *) klass;
widget_class = (GtkWidgetClass *) klass;
oclass->destroy = gtk_combo_destroy;
widget_class->size_allocate = gtk_combo_size_allocate;
}
static void
gtk_combo_destroy (GtkObject * combo)
{
gtk_widget_destroy (GTK_COMBO (combo)->popwin);
gtk_widget_unref (GTK_COMBO (combo)->popwin);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(*GTK_OBJECT_CLASS (parent_class)->destroy) (combo);
}
static int
gtk_combo_entry_key_press (GtkEntry * entry, GdkEventKey * event, GtkCombo * combo)
{
GList *li;
/* completion? */
/*if ( event->keyval == GDK_Tab ) {
gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
return TRUE;
} else */
if (!combo->use_arrows || !GTK_LIST (combo->list)->children)
return FALSE;
li = g_list_find (GTK_LIST (combo->list)->children, gtk_combo_find (combo));
if ((event->keyval == GDK_Up)
|| (event->keyval == GDK_KP_Up)
|| ((event->state & GDK_MOD1_MASK) && ((event->keyval == 'p') || (event->keyval == 'P'))))
{
if (li)
li = li->prev;
if (!li && combo->use_arrows_always)
{
li = g_list_last (GTK_LIST (combo->list)->children);
}
if (li)
{
gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
return TRUE;
}
}
else if ((event->keyval == GDK_Down)
|| (event->keyval == GDK_KP_Down)
|| ((event->state & GDK_MOD1_MASK) && ((event->keyval == 'n') || (event->keyval == 'N'))))
{
if (li)
li = li->next;
if (!li && combo->use_arrows_always)
{
li = GTK_LIST (combo->list)->children;
}
if (li)
{
gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
return TRUE;
}
}
return FALSE;
}
static GtkListItem *
gtk_combo_find (GtkCombo * combo)
{
gchar *text;
gchar *ltext;
GList *clist;
int (*string_compare) (const char *, const char *);
if (combo->case_sensitive)
string_compare = strcmp;
else
string_compare = g_strcasecmp;
text = gtk_entry_get_text (GTK_ENTRY (combo->entry));
clist = GTK_LIST (combo->list)->children;
while (clist && clist->data)
{
ltext = gtk_combo_func (GTK_LIST_ITEM (clist->data));
if (!ltext)
continue;
if (!(*string_compare) (ltext, text))
return (GtkListItem *) clist->data;
clist = clist->next;
}
return NULL;
}
static gchar *
gtk_combo_func (GtkListItem * li)
{
GtkWidget *label;
gchar *ltext = NULL;
ltext = (gchar *) gtk_object_get_data (GTK_OBJECT (li), gtk_combo_string_key);
if (!ltext)
{
label = GTK_BIN (li)->child;
if (!label || !GTK_IS_LABEL (label))
return NULL;
gtk_label_get (GTK_LABEL (label), &ltext);
}
return ltext;
}
static gint
gtk_combo_focus_idle (GtkCombo * combo)
{
if (combo)
gtk_widget_grab_focus (combo->entry);
return FALSE;
}
static gint
gtk_combo_entry_focus_out (GtkEntry * entry, GdkEventFocus * event, GtkCombo * combo)
{
if (combo->value_in_list && !gtk_combo_find (combo))
{
/* gdk_beep(); *//* this can be annoying */
if (combo->ok_if_empty && !strcmp (gtk_entry_get_text (entry), ""))
return FALSE;
#ifdef TEST
printf ("INVALID ENTRY: `%s'\n", gtk_entry_get_text (entry));
#endif
gtk_grab_add (GTK_WIDGET (combo));
/* this is needed because if we call gtk_widget_grab_focus()
it isn't guaranteed it's the *last* call before the main-loop,
so the focus can be lost anyway...
the signal_emit_stop doesn't seem to work either...
*/
gtk_idle_add ((GtkFunction) gtk_combo_focus_idle, combo);
/*gtk_signal_emit_stop_by_name(GTK_OBJECT(entry), "focus_out_event"); */
return TRUE;
}
return FALSE;
}
static void
gtk_combo_get_pos (GtkCombo * combo, gint * x, gint * y, gint * height, gint * width)
{
GtkBin *popwin;
GtkWidget *widget;
GtkScrolledWindow *popup;
gint real_height;
GtkRequisition list_requisition;
gboolean show_hscroll = FALSE;
gboolean show_vscroll = FALSE;
gint avail_height;
gint min_height;
gint alloc_width;
gint work_height;
gint old_height;
gint old_width;
widget = GTK_WIDGET(combo);
popup = GTK_SCROLLED_WINDOW (combo->popup);
popwin = GTK_BIN (combo->popwin);
gdk_window_get_origin (combo->entry->window, x, y);
real_height = MIN (combo->entry->requisition.height,
combo->entry->allocation.height);
*y += real_height;
avail_height = gdk_screen_height () - *y;
gtk_widget_size_request (combo->list, &list_requisition);
min_height = MIN (list_requisition.height,
popup->vscrollbar->requisition.height);
alloc_width = widget->allocation.width -
2 * popwin->child->style->klass->xthickness -
2 * GTK_CONTAINER (popwin->child)->border_width -
2 * GTK_CONTAINER (combo->popup)->border_width -
2 * GTK_CONTAINER (popup->viewport)->border_width -
2 * popup->viewport->style->klass->xthickness;
work_height =
2 * popwin->child->style->klass->ythickness +
2 * GTK_CONTAINER (popwin->child)->border_width +
2 * GTK_CONTAINER (combo->popup)->border_width +
2 * GTK_CONTAINER (popup->viewport)->border_width +
2 * popup->viewport->style->klass->xthickness;
do
{
old_width = alloc_width;
old_height = work_height;
if (!show_hscroll &&
alloc_width < list_requisition.width)
{
work_height += popup->hscrollbar->requisition.height +
GTK_SCROLLED_WINDOW_CLASS
(GTK_OBJECT (combo->popup)->klass)->scrollbar_spacing;
show_hscroll = TRUE;
}
if (!show_vscroll &&
work_height + list_requisition.height > avail_height)
{
if (work_height + min_height > avail_height &&
*y - real_height > avail_height)
{
*y -= (work_height +list_requisition.height + real_height);
break;
}
alloc_width -=
popup->vscrollbar->requisition.width +
GTK_SCROLLED_WINDOW_CLASS
(GTK_OBJECT (combo->popup)->klass)->scrollbar_spacing;
show_vscroll = TRUE;
}
} while (old_width != alloc_width || old_height != work_height);
*width = widget->allocation.width;
if (show_vscroll)
*height = avail_height;
else
*height = work_height + list_requisition.height;
if (*x < 0)
*x = 0;
}
static void
gtk_combo_popup_list (GtkButton * button, GtkCombo * combo)
{
gint height, width, x, y;
gint old_width, old_height;
if (!GTK_LIST (combo->list)->children)
return;
old_width = combo->popwin->allocation.width;
old_height = combo->popwin->allocation.height;
gtk_combo_get_pos (combo, &x, &y, &height, &width);
/* workaround for gtk_scrolled_window_size_allocate bug */
if (old_width != width || old_height != height)
{
gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar);
gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar);
}
gtk_widget_set_uposition (combo->popwin, x, y);
gtk_widget_set_usize (combo->popwin, width, height);
gtk_widget_realize (combo->popwin);
gdk_window_resize (combo->popwin->window, width, height);
gtk_widget_show (combo->popwin);
gtk_widget_grab_focus (combo->popwin);
gtk_grab_add (combo->popwin);
gdk_pointer_grab (combo->popwin->window, TRUE,
GDK_BUTTON_PRESS_MASK, NULL, NULL, GDK_CURRENT_TIME);
}
#if 0
static void
prelight_bug (GtkButton * b, GtkCombo * combo)
{
/* avoid prelight state... */
gtk_widget_set_state (combo->button, GTK_STATE_NORMAL);
}
#endif
static void
gtk_combo_update_entry (GtkList * list, GtkCombo * combo)
{
char *text;
gtk_grab_remove (GTK_WIDGET (combo));
gtk_signal_handler_block (GTK_OBJECT (list), combo->list_change_id);
if (list->selection)
{
text = gtk_combo_func (GTK_LIST_ITEM (list->selection->data));
if (!text)
text = "";
gtk_entry_set_text (GTK_ENTRY (combo->entry), text);
}
gtk_widget_hide (combo->popwin);
gtk_grab_remove (combo->popwin);
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gtk_signal_handler_unblock (GTK_OBJECT (list), combo->list_change_id);
}
static void
gtk_combo_update_list (GtkEntry * entry, GtkCombo * combo)
{
GtkList *list = GTK_LIST (combo->list);
GList *slist = list->selection;
GtkListItem *li;
gtk_grab_remove (GTK_WIDGET (combo));
gtk_signal_handler_block (GTK_OBJECT (entry), combo->entry_change_id);
if (slist && slist->data)
gtk_list_unselect_child (list, GTK_WIDGET (slist->data));
li = gtk_combo_find (combo);
if (li)
gtk_list_select_child (list, GTK_WIDGET (li));
gtk_signal_handler_unblock (GTK_OBJECT (entry), combo->entry_change_id);
}
static gint
gtk_combo_button_press (GtkWidget * widget, GdkEvent * event, GtkCombo * combo)
{
GtkWidget *child;
child = gtk_get_event_widget (event);
/* We don't ask for button press events on the grab widget, so
* if an event is reported directly to the grab widget, it must
* be on a window outside the application (and thus we remove
* the popup window). Otherwise, we check if the widget is a child
* of the grab widget, and only remove the popup window if it
* is not.
*/
if (child != widget)
{
while (child)
{
if (child == widget)
return FALSE;
child = child->parent;
}
}
gtk_widget_hide (combo->popwin);
gtk_grab_remove (combo->popwin);
gdk_pointer_ungrab (GDK_CURRENT_TIME);
return TRUE;
}
static int
gtk_combo_list_key_press (GtkWidget * widget, GdkEventKey * event, GtkCombo * combo)
{
if (event->keyval == GDK_Escape)
{
gtk_widget_hide (combo->popwin);
gtk_grab_remove (combo->popwin);
gdk_pointer_ungrab (GDK_CURRENT_TIME);
return TRUE;
}
return FALSE;
}
void
gtk_combo_init (GtkCombo * combo)
{
GtkWidget *arrow;
GtkWidget *frame;
combo->case_sensitive = 0;
combo->value_in_list = 0;
combo->ok_if_empty = 1;
combo->use_arrows = 1;
combo->use_arrows_always = 0;
combo->entry = gtk_entry_new ();
combo->button = gtk_button_new ();
arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
gtk_widget_show (arrow);
gtk_container_add (GTK_CONTAINER (combo->button), arrow);
gtk_box_pack_start (GTK_BOX (combo), combo->entry, TRUE, TRUE, 0);
gtk_box_pack_end (GTK_BOX (combo), combo->button, FALSE, FALSE, 0);
gtk_widget_show (combo->entry);
gtk_widget_show (combo->button);
combo->entry_change_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "changed",
(GtkSignalFunc) gtk_combo_update_list, combo);
gtk_signal_connect (GTK_OBJECT (combo->entry), "key_press_event",
(GtkSignalFunc) gtk_combo_entry_key_press, combo);
gtk_signal_connect_after (GTK_OBJECT (combo->entry), "focus_out_event",
(GtkSignalFunc) gtk_combo_entry_focus_out, combo);
gtk_signal_connect (GTK_OBJECT (combo->entry), "activate",
(GtkSignalFunc) gtk_combo_popup_list, combo);
gtk_signal_connect (GTK_OBJECT (combo->button), "clicked",
(GtkSignalFunc) gtk_combo_popup_list, combo);
/*gtk_signal_connect(GTK_OBJECT(combo->button), "clicked",
(GtkSignalFunc)prelight_bug, combo); */
combo->popwin = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_ref (combo->popwin);
gtk_window_set_policy (GTK_WINDOW (combo->popwin), 1, 1, 0);
frame = gtk_frame_new (NULL);
gtk_container_add (GTK_CONTAINER (combo->popwin), frame);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_widget_show (frame);
combo->popup = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (combo->popup),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
combo->list = gtk_list_new ();
gtk_list_set_selection_mode(GTK_LIST(combo->list), GTK_SELECTION_BROWSE);
gtk_container_add (GTK_CONTAINER (frame), combo->popup);
gtk_container_add (GTK_CONTAINER (combo->popup), combo->list);
gtk_widget_show (combo->list);
gtk_widget_show (combo->popup);
gtk_widget_set_events (combo->popwin, gtk_widget_get_events (combo->popwin) | GDK_KEY_PRESS_MASK);
combo->list_change_id = gtk_signal_connect (GTK_OBJECT (combo->list), "selection_changed",
(GtkSignalFunc) gtk_combo_update_entry, combo);
gtk_signal_connect (GTK_OBJECT (combo->popwin), "key_press_event",
(GtkSignalFunc) gtk_combo_list_key_press, combo);
gtk_signal_connect (GTK_OBJECT (combo->popwin), "button_press_event",
GTK_SIGNAL_FUNC (gtk_combo_button_press), combo);
}
guint
gtk_combo_get_type ()
{
static guint combo_type = 0;
if (!combo_type)
{
GtkTypeInfo combo_info =
{
"GtkCombo",
sizeof (GtkCombo),
sizeof (GtkComboClass),
(GtkClassInitFunc) gtk_combo_class_init,
(GtkObjectInitFunc) gtk_combo_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
combo_type = gtk_type_unique (gtk_hbox_get_type (), &combo_info);
}
return combo_type;
}
GtkWidget *
gtk_combo_new ()
{
return GTK_WIDGET (gtk_type_new (gtk_combo_get_type ()));
}
void
gtk_combo_set_value_in_list (GtkCombo * combo, gint val, gint ok_if_empty)
{
g_return_if_fail (combo != NULL);
g_return_if_fail (GTK_IS_COMBO (combo));
combo->value_in_list = val;
combo->ok_if_empty = ok_if_empty;
}
void
gtk_combo_set_case_sensitive (GtkCombo * combo, gint val)
{
g_return_if_fail (combo != NULL);
g_return_if_fail (GTK_IS_COMBO (combo));
combo->case_sensitive = val;
}
void
gtk_combo_set_use_arrows (GtkCombo * combo, gint val)
{
g_return_if_fail (combo != NULL);
g_return_if_fail (GTK_IS_COMBO (combo));
combo->use_arrows = val;
}
void
gtk_combo_set_use_arrows_always (GtkCombo * combo, gint val)
{
g_return_if_fail (combo != NULL);
g_return_if_fail (GTK_IS_COMBO (combo));
combo->use_arrows_always = val;
combo->use_arrows = 1;
}
void
gtk_combo_set_popdown_strings (GtkCombo * combo, GList * strings)
{
GList *list;
GtkWidget *li;
g_return_if_fail (combo != NULL);
g_return_if_fail (GTK_IS_COMBO (combo));
g_return_if_fail (strings != NULL);
gtk_list_clear_items (GTK_LIST (combo->list), 0, -1);
list = strings;
while (list)
{
li = gtk_list_item_new_with_label ((gchar *) list->data);
gtk_widget_show (li);
gtk_container_add (GTK_CONTAINER (combo->list), li);
list = list->next;
}
}
static void
gtk_combo_item_destroy (GtkObject * object)
{
gchar *key;
key = gtk_object_get_data (object, gtk_combo_string_key);
if (key)
g_free (key);
}
void
gtk_combo_set_item_string (GtkCombo * combo, GtkItem * item, const gchar * item_value)
{
gchar *val;
gint connected = 0;
g_return_if_fail (combo != NULL);
g_return_if_fail (GTK_IS_COMBO (combo));
g_return_if_fail (item != NULL);
val = gtk_object_get_data (GTK_OBJECT (item), gtk_combo_string_key);
if (val)
{
g_free (val);
connected = 1;
}
if (item_value)
{
val = g_strdup(item_value);
gtk_object_set_data (GTK_OBJECT (item), gtk_combo_string_key, val);
if (!connected)
gtk_signal_connect (GTK_OBJECT (item), "destroy",
(GtkSignalFunc) gtk_combo_item_destroy, val);
}
else
{
gtk_object_set_data (GTK_OBJECT (item), gtk_combo_string_key, NULL);
if (connected)
gtk_signal_disconnect_by_data(GTK_OBJECT (item), val);
}
}
static void
gtk_combo_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkCombo *combo;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_COMBO (widget));
g_return_if_fail (allocation != NULL);
GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
combo = GTK_COMBO (widget);
if (combo->entry->allocation.height > combo->entry->requisition.height)
{
GtkAllocation button_allocation;
button_allocation = combo->button->allocation;
button_allocation.height = combo->entry->requisition.height;
button_allocation.y = combo->entry->allocation.y +
(combo->entry->allocation.height - combo->entry->requisition.height)
/ 2;
gtk_widget_size_allocate (combo->button, &button_allocation);
}
}
Reference in New Issue View Git Blame Copy Permalink