AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
0e86016442
gtk2/gtk/gtkoptionmenu.c
Matthias Clasen 52711c24e8 More canonical property names.
2005-03-09 06:15:13 +00:00

1064 lines
31 KiB
C
Raw Blame History

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Jsh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <config.h>
#include "gtkalias.h"
#include "gtkintl.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtkmarshalers.h"
#include "gdk/gdkkeysyms.h"
#undef GTK_DISABLE_DEPRECATED
#include "gtkoptionmenu.h"
#define GTK_DISABLE_DEPRECATED
#define CHILD_LEFT_SPACING 4
#define CHILD_RIGHT_SPACING 1
#define CHILD_TOP_SPACING 1
#define CHILD_BOTTOM_SPACING 1
typedef struct _GtkOptionMenuProps GtkOptionMenuProps;
struct _GtkOptionMenuProps
{
gboolean interior_focus;
GtkRequisition indicator_size;
GtkBorder indicator_spacing;
gint focus_width;
gint focus_pad;
};
static const GtkOptionMenuProps default_props = {
TRUE,
{ 7, 13 },
{ 7, 5, 2, 2 }, /* Left, right, top, bottom */
1,
0
};
static void gtk_option_menu_class_init (GtkOptionMenuClass *klass);
static void gtk_option_menu_init (GtkOptionMenu *option_menu);
static void gtk_option_menu_destroy (GtkObject *object);
static void gtk_option_menu_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_option_menu_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_option_menu_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_option_menu_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_option_menu_paint (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_option_menu_expose (GtkWidget *widget,
GdkEventExpose *event);
static gint gtk_option_menu_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_option_menu_key_press (GtkWidget *widget,
GdkEventKey *event);
static void gtk_option_menu_selection_done (GtkMenuShell *menu_shell,
GtkOptionMenu *option_menu);
static void gtk_option_menu_update_contents (GtkOptionMenu *option_menu);
static void gtk_option_menu_remove_contents (GtkOptionMenu *option_menu);
static void gtk_option_menu_calc_size (GtkOptionMenu *option_menu);
static void gtk_option_menu_position (GtkMenu *menu,
gint *x,
gint *y,
gint *scroll_offet,
gpointer user_data);
static void gtk_option_menu_show_all (GtkWidget *widget);
static void gtk_option_menu_hide_all (GtkWidget *widget);
static gboolean gtk_option_menu_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling);
static GType gtk_option_menu_child_type (GtkContainer *container);
static gint gtk_option_menu_scroll_event (GtkWidget *widget,
GdkEventScroll *event);
enum
{
CHANGED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_MENU,
LAST_PROP
};
static GtkButtonClass *parent_class = NULL;
static guint signals[LAST_SIGNAL] = { 0 };
GType
gtk_option_menu_get_type (void)
{
static GType option_menu_type = 0;
if (!option_menu_type)
{
static const GTypeInfo option_menu_info =
{
sizeof (GtkOptionMenuClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_option_menu_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkOptionMenu),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_option_menu_init,
};
option_menu_type =
g_type_register_static (GTK_TYPE_BUTTON, "GtkOptionMenu",
&option_menu_info, 0);
}
return option_menu_type;
}
static void
gtk_option_menu_class_init (GtkOptionMenuClass *class)
{
GObjectClass *gobject_class;
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkButtonClass *button_class;
GtkContainerClass *container_class;
gobject_class = (GObjectClass*) class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
button_class = (GtkButtonClass*) class;
container_class = (GtkContainerClass*) class;
parent_class = g_type_class_peek_parent (class);
signals[CHANGED] =
g_signal_new ("changed",
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkOptionMenuClass, changed),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gobject_class->set_property = gtk_option_menu_set_property;
gobject_class->get_property = gtk_option_menu_get_property;
object_class->destroy = gtk_option_menu_destroy;
widget_class->size_request = gtk_option_menu_size_request;
widget_class->size_allocate = gtk_option_menu_size_allocate;
widget_class->expose_event = gtk_option_menu_expose;
widget_class->button_press_event = gtk_option_menu_button_press;
widget_class->key_press_event = gtk_option_menu_key_press;
widget_class->scroll_event = gtk_option_menu_scroll_event;
widget_class->show_all = gtk_option_menu_show_all;
widget_class->hide_all = gtk_option_menu_hide_all;
widget_class->mnemonic_activate = gtk_option_menu_mnemonic_activate;
container_class->child_type = gtk_option_menu_child_type;
g_object_class_install_property (gobject_class,
PROP_MENU,
g_param_spec_object ("menu",
P_("Menu"),
P_("The menu of options"),
GTK_TYPE_MENU,
G_PARAM_READABLE | G_PARAM_WRITABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boxed ("indicator-size",
P_("Indicator Size"),
P_("Size of dropdown indicator"),
GTK_TYPE_REQUISITION,
G_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boxed ("indicator-spacing",
P_("Indicator Spacing"),
P_("Spacing around indicator"),
GTK_TYPE_BORDER,
G_PARAM_READABLE));
}
static GType
gtk_option_menu_child_type (GtkContainer *container)
{
return G_TYPE_NONE;
}
static void
gtk_option_menu_init (GtkOptionMenu *option_menu)
{
GTK_WIDGET_SET_FLAGS (option_menu, GTK_CAN_FOCUS);
GTK_WIDGET_UNSET_FLAGS (option_menu, GTK_CAN_DEFAULT | GTK_RECEIVES_DEFAULT);
option_menu->menu = NULL;
option_menu->menu_item = NULL;
option_menu->width = 0;
option_menu->height = 0;
}
GtkWidget*
gtk_option_menu_new (void)
{
return g_object_new (GTK_TYPE_OPTION_MENU, NULL);
}
GtkWidget*
gtk_option_menu_get_menu (GtkOptionMenu *option_menu)
{
g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), NULL);
return option_menu->menu;
}
static void
gtk_option_menu_detacher (GtkWidget *widget,
GtkMenu *menu)
{
GtkOptionMenu *option_menu;
g_return_if_fail (GTK_IS_OPTION_MENU (widget));
option_menu = GTK_OPTION_MENU (widget);
g_return_if_fail (option_menu->menu == (GtkWidget*) menu);
gtk_option_menu_remove_contents (option_menu);
g_signal_handlers_disconnect_by_func (option_menu->menu,
gtk_option_menu_selection_done,
option_menu);
g_signal_handlers_disconnect_by_func (option_menu->menu,
gtk_option_menu_calc_size,
option_menu);
option_menu->menu = NULL;
g_object_notify (G_OBJECT (option_menu), "menu");
}
void
gtk_option_menu_set_menu (GtkOptionMenu *option_menu,
GtkWidget *menu)
{
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
g_return_if_fail (GTK_IS_MENU (menu));
if (option_menu->menu != menu)
{
gtk_option_menu_remove_menu (option_menu);
option_menu->menu = menu;
gtk_menu_attach_to_widget (GTK_MENU (menu),
GTK_WIDGET (option_menu),
gtk_option_menu_detacher);
gtk_option_menu_calc_size (option_menu);
g_signal_connect_after (option_menu->menu, "selection_done",
G_CALLBACK (gtk_option_menu_selection_done),
option_menu);
g_signal_connect_swapped (option_menu->menu, "size_request",
G_CALLBACK (gtk_option_menu_calc_size),
option_menu);
if (GTK_WIDGET (option_menu)->parent)
gtk_widget_queue_resize (GTK_WIDGET (option_menu));
gtk_option_menu_update_contents (option_menu);
g_object_notify (G_OBJECT (option_menu), "menu");
}
}
void
gtk_option_menu_remove_menu (GtkOptionMenu *option_menu)
{
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
if (option_menu->menu)
{
if (GTK_MENU_SHELL (option_menu->menu)->active)
gtk_menu_shell_cancel (GTK_MENU_SHELL (option_menu->menu));
gtk_menu_detach (GTK_MENU (option_menu->menu));
}
}
void
gtk_option_menu_set_history (GtkOptionMenu *option_menu,
guint index)
{
GtkWidget *menu_item;
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
if (option_menu->menu)
{
gtk_menu_set_active (GTK_MENU (option_menu->menu), index);
menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
if (menu_item != option_menu->menu_item)
gtk_option_menu_update_contents (option_menu);
}
}
/**
* gtk_option_menu_get_history:
* @option_menu: a #GtkOptionMenu
*
* Retrieves the index of the currently selected menu item. The menu
* items are numbered from top to bottom, starting with 0.
*
* Return value: index of the selected menu item, or -1 if there are no menu items
* Deprecated: Use #GtkComboBox instead.
**/
gint
gtk_option_menu_get_history (GtkOptionMenu *option_menu)
{
GtkWidget *active_widget;
g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), -1);
if (option_menu->menu)
{
active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));
if (active_widget)
return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,
active_widget);
else
return -1;
}
else
return -1;
}
static void
gtk_option_menu_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
switch (prop_id)
{
case PROP_MENU:
gtk_option_menu_set_menu (option_menu, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_option_menu_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);
switch (prop_id)
{
case PROP_MENU:
g_value_set_object (value, option_menu->menu);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_option_menu_destroy (GtkObject *object)
{
GtkOptionMenu *option_menu;
g_return_if_fail (GTK_IS_OPTION_MENU (object));
option_menu = GTK_OPTION_MENU (object);
if (option_menu->menu)
gtk_widget_destroy (option_menu->menu);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gtk_option_menu_get_props (GtkOptionMenu *option_menu,
GtkOptionMenuProps *props)
{
GtkRequisition *indicator_size;
GtkBorder *indicator_spacing;
gtk_widget_style_get (GTK_WIDGET (option_menu),
"indicator_size", &indicator_size,
"indicator_spacing", &indicator_spacing,
"interior_focus", &props->interior_focus,
"focus_line_width", &props->focus_width,
"focus_padding", &props->focus_pad,
NULL);
if (indicator_size)
props->indicator_size = *indicator_size;
else
props->indicator_size = default_props.indicator_size;
if (indicator_spacing)
props->indicator_spacing = *indicator_spacing;
else
props->indicator_spacing = default_props.indicator_spacing;
g_free (indicator_size);
g_free (indicator_spacing);
}
static void
gtk_option_menu_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
GtkOptionMenuProps props;
gint tmp;
GtkRequisition child_requisition = { 0, 0 };
gtk_option_menu_get_props (option_menu, &props);
if (GTK_BIN (option_menu)->child && GTK_WIDGET_VISIBLE (GTK_BIN (option_menu)->child))
{
gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);
requisition->width += child_requisition.width;
requisition->height += child_requisition.height;
}
requisition->width = ((GTK_CONTAINER (widget)->border_width +
GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +
MAX (child_requisition.width, option_menu->width) +
props.indicator_size.width +
props.indicator_spacing.left + props.indicator_spacing.right +
CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);
requisition->height = ((GTK_CONTAINER (widget)->border_width +
GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +
MAX (child_requisition.height, option_menu->height) +
CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);
tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +
props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);
requisition->height = MAX (requisition->height, tmp);
}
static void
gtk_option_menu_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkWidget *child;
GtkButton *button = GTK_BUTTON (widget);
GtkAllocation child_allocation;
GtkOptionMenuProps props;
gint border_width;
gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
border_width = GTK_CONTAINER (widget)->border_width;
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (button->event_window,
allocation->x + border_width, allocation->y + border_width,
allocation->width - border_width * 2, allocation->height - border_width * 2);
child = GTK_BIN (widget)->child;
if (child && GTK_WIDGET_VISIBLE (child))
{
gint xthickness = GTK_WIDGET (widget)->style->xthickness;
gint ythickness = GTK_WIDGET (widget)->style->ythickness;
child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;
child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;
child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -
props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -
CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);
child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -
CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);
if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;
gtk_widget_size_allocate (child, &child_allocation);
}
}
static void
gtk_option_menu_paint (GtkWidget *widget,
GdkRectangle *area)
{
GdkRectangle button_area;
GtkOptionMenuProps props;
gint border_width;
gint tab_x;
g_return_if_fail (GTK_IS_OPTION_MENU (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
border_width = GTK_CONTAINER (widget)->border_width;
gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props);
button_area.x = widget->allocation.x + border_width;
button_area.y = widget->allocation.y + border_width;
button_area.width = widget->allocation.width - 2 * border_width;
button_area.height = widget->allocation.height - 2 * border_width;
if (!props.interior_focus && GTK_WIDGET_HAS_FOCUS (widget))
{
button_area.x += props.focus_width + props.focus_pad;
button_area.y += props.focus_width + props.focus_pad;
button_area.width -= 2 * (props.focus_width + props.focus_pad);
button_area.height -= 2 * (props.focus_width + props.focus_pad);
}
gtk_paint_box (widget->style, widget->window,
GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
area, widget, "optionmenu",
button_area.x, button_area.y,
button_area.width, button_area.height);
if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
tab_x = button_area.x + props.indicator_spacing.right +
widget->style->xthickness;
else
tab_x = button_area.x + button_area.width -
props.indicator_size.width - props.indicator_spacing.right -
widget->style->xthickness;
gtk_paint_tab (widget->style, widget->window,
GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
area, widget, "optionmenutab",
tab_x,
button_area.y + (button_area.height - props.indicator_size.height) / 2,
props.indicator_size.width, props.indicator_size.height);
if (GTK_WIDGET_HAS_FOCUS (widget))
{
if (props.interior_focus)
{
button_area.x += widget->style->xthickness + props.focus_pad;
button_area.y += widget->style->ythickness + props.focus_pad;
button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +
props.indicator_spacing.left +
props.indicator_spacing.right +
props.indicator_size.width;
button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);
if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
button_area.x += props.indicator_spacing.left +
props.indicator_spacing.right +
props.indicator_size.width;
}
else
{
button_area.x -= props.focus_width + props.focus_pad;
button_area.y -= props.focus_width + props.focus_pad;
button_area.width += 2 * (props.focus_width + props.focus_pad);
button_area.height += 2 * (props.focus_width + props.focus_pad);
}
gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
area, widget, "button",
button_area.x,
button_area.y,
button_area.width,
button_area.height);
}
}
}
static gint
gtk_option_menu_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_option_menu_paint (widget, &event->area);
/* The following code tries to draw the child in two places at
* once. It fails miserably for several reasons
*
* - If the child is not no-window, removing generates
* more expose events. Bad, bad, bad.
*
* - Even if the child is no-window, removing it now (properly)
* clears the space where it was, so it does no good
*/
#if 0
remove_child = FALSE;
child = GTK_BUTTON (widget)->child;
if (!child)
{
if (!GTK_OPTION_MENU (widget)->menu)
return FALSE;
gtk_option_menu_update_contents (GTK_OPTION_MENU (widget));
child = GTK_BUTTON (widget)->child;
if (!child)
return FALSE;
remove_child = TRUE;
}
child_event = *event;
if (GTK_WIDGET_NO_WINDOW (child) &&
gtk_widget_intersect (child, &event->area, &child_event.area))
gtk_widget_event (child, (GdkEvent*) &child_event);
if (remove_child)
gtk_option_menu_remove_contents (GTK_OPTION_MENU (widget));
#else
if (GTK_BIN (widget)->child)
gtk_container_propagate_expose (GTK_CONTAINER (widget),
GTK_BIN (widget)->child,
event);
#endif /* 0 */
}
return FALSE;
}
static gint
gtk_option_menu_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkOptionMenu *option_menu;
GtkWidget *menu_item;
g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
option_menu = GTK_OPTION_MENU (widget);
if ((event->type == GDK_BUTTON_PRESS) &&
(event->button == 1))
{
gtk_option_menu_remove_contents (option_menu);
gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
gtk_option_menu_position, option_menu,
event->button, event->time);
menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
if (menu_item)
gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
return TRUE;
}
return FALSE;
}
static gint
gtk_option_menu_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkOptionMenu *option_menu;
GtkWidget *menu_item;
g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
option_menu = GTK_OPTION_MENU (widget);
switch (event->keyval)
{
case GDK_KP_Space:
case GDK_space:
gtk_option_menu_remove_contents (option_menu);
gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,
gtk_option_menu_position, option_menu,
0, event->time);
menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
if (menu_item)
gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);
return TRUE;
}
return FALSE;
}
static void
gtk_option_menu_selection_done (GtkMenuShell *menu_shell,
GtkOptionMenu *option_menu)
{
g_return_if_fail (menu_shell != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
gtk_option_menu_update_contents (option_menu);
}
static void
gtk_option_menu_changed (GtkOptionMenu *option_menu)
{
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
g_signal_emit (option_menu, signals[CHANGED], 0);
}
static void
gtk_option_menu_select_first_sensitive (GtkOptionMenu *option_menu)
{
if (option_menu->menu)
{
GList *children = GTK_MENU_SHELL (option_menu->menu)->children;
gint index = 0;
while (children)
{
if (GTK_WIDGET_SENSITIVE (children->data))
{
gtk_option_menu_set_history (option_menu, index);
return;
}
children = children->next;
index++;
}
}
}
static void
gtk_option_menu_item_state_changed_cb (GtkWidget *widget,
GtkStateType previous_state,
GtkOptionMenu *option_menu)
{
GtkWidget *child = GTK_BIN (option_menu)->child;
if (child && GTK_WIDGET_SENSITIVE (child) != GTK_WIDGET_IS_SENSITIVE (widget))
gtk_widget_set_sensitive (child, GTK_WIDGET_IS_SENSITIVE (widget));
}
static void
gtk_option_menu_item_destroy_cb (GtkWidget *widget,
GtkOptionMenu *option_menu)
{
GtkWidget *child = GTK_BIN (option_menu)->child;
if (child)
{
g_object_ref (child);
gtk_option_menu_remove_contents (option_menu);
gtk_widget_destroy (child);
g_object_unref (child);
gtk_option_menu_select_first_sensitive (option_menu);
}
}
static void
gtk_option_menu_update_contents (GtkOptionMenu *option_menu)
{
GtkWidget *child;
GtkRequisition child_requisition;
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
if (option_menu->menu)
{
GtkWidget *old_item = option_menu->menu_item;
gtk_option_menu_remove_contents (option_menu);
option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));
if (option_menu->menu_item)
{
g_object_ref (option_menu->menu_item);
child = GTK_BIN (option_menu->menu_item)->child;
if (child)
{
if (!GTK_WIDGET_IS_SENSITIVE (option_menu->menu_item))
gtk_widget_set_sensitive (child, FALSE);
gtk_widget_reparent (child, GTK_WIDGET (option_menu));
}
g_signal_connect (option_menu->menu_item, "state_changed",
G_CALLBACK (gtk_option_menu_item_state_changed_cb), option_menu);
g_signal_connect (option_menu->menu_item, "destroy",
G_CALLBACK (gtk_option_menu_item_destroy_cb), option_menu);
gtk_widget_size_request (child, &child_requisition);
gtk_widget_size_allocate (GTK_WIDGET (option_menu),
&(GTK_WIDGET (option_menu)->allocation));
if (GTK_WIDGET_DRAWABLE (option_menu))
gtk_widget_queue_draw (GTK_WIDGET (option_menu));
}
if (old_item != option_menu->menu_item)
gtk_option_menu_changed (option_menu);
}
}
static void
gtk_option_menu_remove_contents (GtkOptionMenu *option_menu)
{
GtkWidget *child;
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
if (option_menu->menu_item)
{
child = GTK_BIN (option_menu)->child;
if (child)
{
gtk_widget_set_sensitive (child, TRUE);
gtk_widget_set_state (child, GTK_STATE_NORMAL);
gtk_widget_reparent (child, option_menu->menu_item);
}
g_signal_handlers_disconnect_by_func (option_menu->menu_item,
gtk_option_menu_item_state_changed_cb,
option_menu);
g_signal_handlers_disconnect_by_func (option_menu->menu_item,
gtk_option_menu_item_destroy_cb,
option_menu);
g_object_unref (option_menu->menu_item);
option_menu->menu_item = NULL;
}
}
static void
gtk_option_menu_calc_size (GtkOptionMenu *option_menu)
{
GtkWidget *child;
GList *children;
GtkRequisition child_requisition;
gint old_width = option_menu->width;
gint old_height = option_menu->height;
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
option_menu->width = 0;
option_menu->height = 0;
if (option_menu->menu)
{
children = GTK_MENU_SHELL (option_menu->menu)->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child))
{
GtkWidget *inner = GTK_BIN (child)->child;
if (inner)
{
gtk_widget_size_request (inner, &child_requisition);
option_menu->width = MAX (option_menu->width, child_requisition.width);
option_menu->height = MAX (option_menu->height, child_requisition.height);
}
}
}
}
if (old_width != option_menu->width || old_height != option_menu->height)
gtk_widget_queue_resize (GTK_WIDGET (option_menu));
}
static void
gtk_option_menu_position (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data)
{
GtkOptionMenu *option_menu;
GtkWidget *active;
GtkWidget *child;
GtkWidget *widget;
GtkRequisition requisition;
GList *children;
gint screen_width;
gint menu_xpos;
gint menu_ypos;
gint menu_width;
g_return_if_fail (GTK_IS_OPTION_MENU (user_data));
option_menu = GTK_OPTION_MENU (user_data);
widget = GTK_WIDGET (option_menu);
gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition);
menu_width = requisition.width;
active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
gdk_window_get_origin (widget->window, &menu_xpos, &menu_ypos);
menu_xpos += widget->allocation.x;
menu_ypos += widget->allocation.y + widget->allocation.height / 2 - 2;
if (active != NULL)
{
gtk_widget_get_child_requisition (active, &requisition);
menu_ypos -= requisition.height / 2;
}
children = GTK_MENU_SHELL (option_menu->menu)->children;
while (children)
{
child = children->data;
if (active == child)
break;
if (GTK_WIDGET_VISIBLE (child))
{
gtk_widget_get_child_requisition (child, &requisition);
menu_ypos -= requisition.height;
}
children = children->next;
}
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
menu_xpos = menu_xpos + widget->allocation.width - menu_width;
/* Clamp the position on screen */
screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
if (menu_xpos < 0)
menu_xpos = 0;
else if ((menu_xpos + menu_width) > screen_width)
menu_xpos -= ((menu_xpos + menu_width) - screen_width);
*x = menu_xpos;
*y = menu_ypos;
*push_in = TRUE;
}
static void
gtk_option_menu_show_all (GtkWidget *widget)
{
GtkContainer *container;
GtkOptionMenu *option_menu;
g_return_if_fail (GTK_IS_OPTION_MENU (widget));
container = GTK_CONTAINER (widget);
option_menu = GTK_OPTION_MENU (widget);
gtk_widget_show (widget);
gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
if (option_menu->menu)
gtk_widget_show_all (option_menu->menu);
if (option_menu->menu_item)
gtk_widget_show_all (option_menu->menu_item);
}
static void
gtk_option_menu_hide_all (GtkWidget *widget)
{
GtkContainer *container;
g_return_if_fail (GTK_IS_OPTION_MENU (widget));
container = GTK_CONTAINER (widget);
gtk_widget_hide (widget);
gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
}
static gboolean
gtk_option_menu_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling)
{
gtk_widget_grab_focus (widget);
return TRUE;
}
static gint
gtk_option_menu_scroll_event (GtkWidget *widget,
GdkEventScroll *event)
{
GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);
gint index;
gint n_children;
gint index_dir;
GList *l;
GtkMenuItem *item;
index = gtk_option_menu_get_history (option_menu);
if (index != -1)
{
n_children = g_list_length (GTK_MENU_SHELL (option_menu->menu)->children);
if (event->direction == GDK_SCROLL_UP)
index_dir = -1;
else
index_dir = 1;
while (TRUE)
{
index += index_dir;
if (index < 0)
break;
if (index >= n_children)
break;
l = g_list_nth (GTK_MENU_SHELL (option_menu->menu)->children, index);
item = GTK_MENU_ITEM (l->data);
if (GTK_WIDGET_VISIBLE (item) && GTK_WIDGET_IS_SENSITIVE (item))
{
gtk_option_menu_set_history (option_menu, index);
gtk_menu_item_activate (GTK_MENU_ITEM (item));
break;
}
}
}
return TRUE;
}
Reference in New Issue View Git Blame Copy Permalink