gtk2/gtk/gtkoptionmenu.c
Owen Taylor 16502247df New function, long needed.
Fri Dec  3 14:09:50 1999  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkoptionmenu.[ch] (gtk_option_menu_get_history):
	New function, long needed.

Wed Dec  1 22:35:43 1999  Owen Taylor  <otaylor@redhat.com>

	* gdk/gdkproperty.h x11/gdkproperty.c: Change
	only_if_exists argument of gdk_atom_intern to
	bool.
1999-12-03 20:15:32 +00:00

740 lines
21 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-1999. 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 "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtkoptionmenu.h"
#include "gtksignal.h"
#include "gdk/gdkkeysyms.h"
#define CHILD_LEFT_SPACING 5
#define CHILD_RIGHT_SPACING 1
#define CHILD_TOP_SPACING 1
#define CHILD_BOTTOM_SPACING 1
#define OPTION_INDICATOR_WIDTH 12
#define OPTION_INDICATOR_HEIGHT 8
#define OPTION_INDICATOR_SPACING 2
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_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 void gtk_option_menu_draw (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_deactivate (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,
gpointer user_data);
static void gtk_option_menu_show_all (GtkWidget *widget);
static void gtk_option_menu_hide_all (GtkWidget *widget);
static GtkType gtk_option_menu_child_type (GtkContainer *container);
static GtkButtonClass *parent_class = NULL;
GtkType
gtk_option_menu_get_type (void)
{
static GtkType option_menu_type = 0;
if (!option_menu_type)
{
static const GtkTypeInfo option_menu_info =
{
"GtkOptionMenu",
sizeof (GtkOptionMenu),
sizeof (GtkOptionMenuClass),
(GtkClassInitFunc) gtk_option_menu_class_init,
(GtkObjectInitFunc) gtk_option_menu_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
option_menu_type = gtk_type_unique (gtk_button_get_type (), &option_menu_info);
}
return option_menu_type;
}
static void
gtk_option_menu_class_init (GtkOptionMenuClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkButtonClass *button_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
button_class = (GtkButtonClass*) class;
container_class = (GtkContainerClass*) class;
parent_class = gtk_type_class (gtk_button_get_type ());
object_class->destroy = gtk_option_menu_destroy;
widget_class->draw = gtk_option_menu_draw;
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->show_all = gtk_option_menu_show_all;
widget_class->hide_all = gtk_option_menu_hide_all;
container_class->child_type = gtk_option_menu_child_type;
}
static GtkType
gtk_option_menu_child_type (GtkContainer *container)
{
return GTK_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 GTK_WIDGET (gtk_type_new (gtk_option_menu_get_type ()));
}
GtkWidget*
gtk_option_menu_get_menu (GtkOptionMenu *option_menu)
{
g_return_val_if_fail (option_menu != NULL, NULL);
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 (widget != NULL);
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);
gtk_signal_disconnect_by_data (GTK_OBJECT (option_menu->menu),
option_menu);
option_menu->menu = NULL;
}
void
gtk_option_menu_set_menu (GtkOptionMenu *option_menu,
GtkWidget *menu)
{
g_return_if_fail (option_menu != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
g_return_if_fail (menu != NULL);
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);
gtk_signal_connect (GTK_OBJECT (option_menu->menu), "deactivate",
(GtkSignalFunc) gtk_option_menu_deactivate,
option_menu);
if (GTK_WIDGET (option_menu)->parent)
gtk_widget_queue_resize (GTK_WIDGET (option_menu));
gtk_option_menu_update_contents (option_menu);
}
}
void
gtk_option_menu_remove_menu (GtkOptionMenu *option_menu)
{
g_return_if_fail (option_menu != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
if (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 (option_menu != NULL);
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_remove_contents (option_menu);
gtk_option_menu_update_contents (option_menu);
}
}
}
gint
gtk_option_menu_get_history (GtkOptionMenu *option_menu)
{
GtkWidget *active_widget;
g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), -1);
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;
}
static void
gtk_option_menu_destroy (GtkObject *object)
{
GtkOptionMenu *option_menu;
g_return_if_fail (object != NULL);
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_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkOptionMenu *option_menu;
gint tmp;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (widget));
g_return_if_fail (requisition != NULL);
option_menu = GTK_OPTION_MENU (widget);
requisition->width = ((GTK_CONTAINER (widget)->border_width +
GTK_WIDGET (widget)->style->klass->xthickness) * 2 +
option_menu->width +
OPTION_INDICATOR_WIDTH +
OPTION_INDICATOR_SPACING * 5 +
CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + 2);
requisition->height = ((GTK_CONTAINER (widget)->border_width +
GTK_WIDGET (widget)->style->klass->ythickness) * 2 +
option_menu->height +
CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + 2);
tmp = (requisition->height - option_menu->height +
OPTION_INDICATOR_HEIGHT + OPTION_INDICATOR_SPACING * 2);
requisition->height = MAX (requisition->height, tmp);
}
static void
gtk_option_menu_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkWidget *child;
GtkAllocation child_allocation;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (widget));
g_return_if_fail (allocation != NULL);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
child = GTK_BIN (widget)->child;
if (child && GTK_WIDGET_VISIBLE (child))
{
child_allocation.x = (GTK_CONTAINER (widget)->border_width +
GTK_WIDGET (widget)->style->klass->xthickness) + 1;
child_allocation.y = (GTK_CONTAINER (widget)->border_width +
GTK_WIDGET (widget)->style->klass->ythickness) + 1;
child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2 -
OPTION_INDICATOR_WIDTH - OPTION_INDICATOR_SPACING * 5 -
CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING - 2);
child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2 -
CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING - 2);
child_allocation.x += CHILD_LEFT_SPACING;
child_allocation.y += CHILD_RIGHT_SPACING;
gtk_widget_size_allocate (child, &child_allocation);
}
}
static void
gtk_option_menu_paint (GtkWidget *widget,
GdkRectangle *area)
{
GdkRectangle button_area;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
button_area.x = GTK_CONTAINER (widget)->border_width + 1;
button_area.y = GTK_CONTAINER (widget)->border_width + 1;
button_area.width = widget->allocation.width - button_area.x * 2;
button_area.height = widget->allocation.height - button_area.y * 2;
/* This is evil, and should be elimated here and in the button
* code. The point is to clear the focus, and make it
* sort of transparent if it isn't there.
*/
gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
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);
gtk_paint_tab (widget->style, widget->window,
GTK_WIDGET_STATE (widget), GTK_SHADOW_OUT,
area, widget, "optionmenutab",
button_area.x + button_area.width - button_area.x -
OPTION_INDICATOR_WIDTH - OPTION_INDICATOR_SPACING * 4,
button_area.y + (button_area.height - OPTION_INDICATOR_HEIGHT) / 2,
OPTION_INDICATOR_WIDTH, OPTION_INDICATOR_HEIGHT);
if (GTK_WIDGET_HAS_FOCUS (widget))
gtk_paint_focus (widget->style, widget->window,
area, widget, "button",
button_area.x - 1,
button_area.y - 1,
button_area.width + 1,
button_area.height + 1);
}
}
static void
gtk_option_menu_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkWidget *child;
GdkRectangle child_area;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_option_menu_paint (widget, area);
child = GTK_BIN (widget)->child;
if (child && gtk_widget_intersect (child, area, &child_area))
gtk_widget_draw (child, &child_area);
}
}
static gint
gtk_option_menu_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkWidget *child;
GdkEventExpose child_event;
gint remove_child;
g_return_val_if_fail (widget != NULL, FALSE);
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
remove_child = FALSE;
child = GTK_BIN (widget)->child;
child_event = *event;
if (child && GTK_WIDGET_NO_WINDOW (child) &&
gtk_widget_intersect (child, &event->area, &child_event.area))
gtk_widget_event (child, (GdkEvent*) &child_event);
#endif /* 0 */
}
return FALSE;
}
static gint
gtk_option_menu_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkOptionMenu *option_menu;
g_return_val_if_fail (widget != NULL, FALSE);
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);
return TRUE;
}
return FALSE;
}
static gint
gtk_option_menu_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkOptionMenu *option_menu;
g_return_val_if_fail (widget != NULL, FALSE);
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_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);
return TRUE;
}
return FALSE;
}
static void
gtk_option_menu_deactivate (GtkMenuShell *menu_shell,
GtkOptionMenu *option_menu)
{
g_return_if_fail (menu_shell != NULL);
g_return_if_fail (option_menu != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
gtk_option_menu_update_contents (option_menu);
}
static void
gtk_option_menu_update_contents (GtkOptionMenu *option_menu)
{
GtkWidget *child;
GtkRequisition child_requisition;
g_return_if_fail (option_menu != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
if (option_menu->menu)
{
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)
{
gtk_widget_ref (option_menu->menu_item);
child = GTK_BIN (option_menu->menu_item)->child;
if (child)
{
if (GTK_BIN (option_menu)->child)
gtk_container_remove (GTK_CONTAINER (option_menu),
GTK_BIN (option_menu)->child);
if (GTK_WIDGET (option_menu)->state != child->state)
gtk_widget_set_state (child, GTK_WIDGET (option_menu)->state);
gtk_widget_reparent (child, GTK_WIDGET (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));
}
}
}
static void
gtk_option_menu_remove_contents (GtkOptionMenu *option_menu)
{
g_return_if_fail (option_menu != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));
if (GTK_BIN (option_menu)->child)
{
if (GTK_WIDGET (option_menu->menu_item)->state != GTK_BIN (option_menu)->child->state)
gtk_widget_set_state (GTK_BIN (option_menu)->child,
GTK_WIDGET (option_menu->menu_item)->state);
gtk_widget_reparent (GTK_BIN (option_menu)->child, option_menu->menu_item);
gtk_widget_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;
g_return_if_fail (option_menu != NULL);
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))
{
gtk_widget_size_request (child, &child_requisition);
option_menu->width = MAX (option_menu->width, child_requisition.width);
option_menu->height = MAX (option_menu->height, child_requisition.height);
}
}
}
}
static void
gtk_option_menu_position (GtkMenu *menu,
gint *x,
gint *y,
gpointer user_data)
{
GtkOptionMenu *option_menu;
GtkWidget *active;
GtkWidget *child;
GList *children;
gint shift_menu;
gint screen_width;
gint screen_height;
gint menu_xpos;
gint menu_ypos;
gint width;
gint height;
g_return_if_fail (user_data != NULL);
g_return_if_fail (GTK_IS_OPTION_MENU (user_data));
option_menu = GTK_OPTION_MENU (user_data);
width = GTK_WIDGET (menu)->allocation.width;
height = GTK_WIDGET (menu)->allocation.height;
active = gtk_menu_get_active (GTK_MENU (option_menu->menu));
children = GTK_MENU_SHELL (option_menu->menu)->children;
gdk_window_get_origin (GTK_WIDGET (option_menu)->window, &menu_xpos, &menu_ypos);
menu_ypos += GTK_WIDGET (option_menu)->allocation.height / 2 - 2;
if (active != NULL)
menu_ypos -= active->requisition.height / 2;
while (children)
{
child = children->data;
if (active == child)
break;
if (GTK_WIDGET_VISIBLE (child))
menu_ypos -= child->allocation.height;
children = children->next;
}
screen_width = gdk_screen_width ();
screen_height = gdk_screen_height ();
shift_menu = FALSE;
if (menu_ypos < 0)
{
menu_ypos = 0;
shift_menu = TRUE;
}
else if ((menu_ypos + height) > screen_height)
{
menu_ypos -= ((menu_ypos + height) - screen_height);
shift_menu = TRUE;
}
if (shift_menu)
{
if ((menu_xpos + GTK_WIDGET (option_menu)->allocation.width + width) <= screen_width)
menu_xpos += GTK_WIDGET (option_menu)->allocation.width;
else
menu_xpos -= width;
}
if (menu_xpos < 0)
menu_xpos = 0;
else if ((menu_xpos + width) > screen_width)
menu_xpos -= ((menu_xpos + width) - screen_width);
*x = menu_xpos;
*y = menu_ypos;
}
static void
gtk_option_menu_show_all (GtkWidget *widget)
{
GtkContainer *container;
GtkOptionMenu *option_menu;
g_return_if_fail (widget != NULL);
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 (widget != NULL);
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);
}