gtk2/gtk/gtklistitem.c
1998-01-16 00:49:51 +00:00

396 lines
11 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "gtklabel.h"
#include "gtklistitem.h"
#include "gtklist.h"
static void gtk_list_item_class_init (GtkListItemClass *klass);
static void gtk_list_item_init (GtkListItem *list_item);
static void gtk_list_item_realize (GtkWidget *widget);
static void gtk_list_item_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_list_item_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_list_item_draw (GtkWidget *widget,
GdkRectangle *area);
static void gtk_list_item_draw_focus (GtkWidget *widget);
static gint gtk_list_item_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_list_item_expose (GtkWidget *widget,
GdkEventExpose *event);
static gint gtk_list_item_focus_in (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_list_item_focus_out (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_real_list_item_select (GtkItem *item);
static void gtk_real_list_item_deselect (GtkItem *item);
static void gtk_real_list_item_toggle (GtkItem *item);
static GtkItemClass *parent_class = NULL;
guint
gtk_list_item_get_type ()
{
static guint list_item_type = 0;
if (!list_item_type)
{
GtkTypeInfo list_item_info =
{
"GtkListItem",
sizeof (GtkListItem),
sizeof (GtkListItemClass),
(GtkClassInitFunc) gtk_list_item_class_init,
(GtkObjectInitFunc) gtk_list_item_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
list_item_type = gtk_type_unique (gtk_item_get_type (), &list_item_info);
}
return list_item_type;
}
static void
gtk_list_item_class_init (GtkListItemClass *class)
{
GtkWidgetClass *widget_class;
GtkItemClass *item_class;
widget_class = (GtkWidgetClass*) class;
item_class = (GtkItemClass*) class;
parent_class = gtk_type_class (gtk_item_get_type ());
widget_class->realize = gtk_list_item_realize;
widget_class->size_request = gtk_list_item_size_request;
widget_class->size_allocate = gtk_list_item_size_allocate;
widget_class->draw = gtk_list_item_draw;
widget_class->draw_focus = gtk_list_item_draw_focus;
widget_class->button_press_event = gtk_list_item_button_press;
widget_class->expose_event = gtk_list_item_expose;
widget_class->focus_in_event = gtk_list_item_focus_in;
widget_class->focus_out_event = gtk_list_item_focus_out;
item_class->select = gtk_real_list_item_select;
item_class->deselect = gtk_real_list_item_deselect;
item_class->toggle = gtk_real_list_item_toggle;
}
static void
gtk_list_item_init (GtkListItem *list_item)
{
GTK_WIDGET_SET_FLAGS (list_item, GTK_CAN_FOCUS);
}
GtkWidget*
gtk_list_item_new ()
{
return GTK_WIDGET (gtk_type_new (gtk_list_item_get_type ()));
}
GtkWidget*
gtk_list_item_new_with_label (const gchar *label)
{
GtkWidget *list_item;
GtkWidget *label_widget;
list_item = gtk_list_item_new ();
label_widget = gtk_label_new (label);
gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
gtk_container_add (GTK_CONTAINER (list_item), label_widget);
gtk_widget_show (label_widget);
return list_item;
}
void
gtk_list_item_select (GtkListItem *list_item)
{
gtk_item_select (GTK_ITEM (list_item));
}
void
gtk_list_item_deselect (GtkListItem *list_item)
{
gtk_item_deselect (GTK_ITEM (list_item));
}
static void
gtk_list_item_realize (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_LIST_ITEM (widget));
if (GTK_WIDGET_CLASS (parent_class)->realize)
(* GTK_WIDGET_CLASS (parent_class)->realize) (widget);
gdk_window_set_background (widget->window, &widget->style->white);
}
static void
gtk_list_item_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkBin *bin;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_LIST_ITEM (widget));
g_return_if_fail (requisition != NULL);
bin = GTK_BIN (widget);
requisition->width = (GTK_CONTAINER (widget)->border_width +
widget->style->klass->xthickness) * 2;
requisition->height = GTK_CONTAINER (widget)->border_width * 2;
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
gtk_widget_size_request (bin->child, &bin->child->requisition);
requisition->width += bin->child->requisition.width;
requisition->height += bin->child->requisition.height;
}
}
static void
gtk_list_item_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkBin *bin;
GtkAllocation child_allocation;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_LIST_ITEM (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);
bin = GTK_BIN (widget);
if (bin->child)
{
child_allocation.x = (GTK_CONTAINER (widget)->border_width +
widget->style->klass->xthickness);
child_allocation.y = GTK_CONTAINER (widget)->border_width;
child_allocation.width = allocation->width - child_allocation.x * 2;
child_allocation.height = allocation->height - child_allocation.y * 2;
gtk_widget_size_allocate (bin->child, &child_allocation);
}
}
static void
gtk_list_item_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkBin *bin;
GdkRectangle child_area;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_LIST_ITEM (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
bin = GTK_BIN (widget);
if (!GTK_WIDGET_IS_SENSITIVE (widget))
gtk_style_set_background (widget->style, widget->window, GTK_STATE_INSENSITIVE);
else if (widget->state == GTK_STATE_NORMAL)
gdk_window_set_background (widget->window, &widget->style->white);
else
gtk_style_set_background (widget->style, widget->window, widget->state);
gdk_window_clear_area (widget->window, area->x, area->y,
area->width, area->height);
if (bin->child && gtk_widget_intersect (bin->child, area, &child_area))
gtk_widget_draw (bin->child, &child_area);
gtk_widget_draw_focus (widget);
}
}
static void
gtk_list_item_draw_focus (GtkWidget *widget)
{
GdkGC *gc;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_LIST_ITEM (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
if (GTK_WIDGET_HAS_FOCUS (widget))
gc = widget->style->black_gc;
else if (!GTK_WIDGET_IS_SENSITIVE (widget))
gc = widget->style->bg_gc[GTK_STATE_INSENSITIVE];
else if (widget->state == GTK_STATE_NORMAL)
gc = widget->style->white_gc;
else
gc = widget->style->bg_gc[widget->state];
gdk_draw_rectangle (widget->window, gc, FALSE, 0, 0,
widget->allocation.width - 1,
widget->allocation.height - 1);
}
}
static gint
gtk_list_item_button_press (GtkWidget *widget,
GdkEventButton *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (event->type == GDK_BUTTON_PRESS)
if (!GTK_WIDGET_HAS_FOCUS (widget))
gtk_widget_grab_focus (widget);
return FALSE;
}
static gint
gtk_list_item_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkBin *bin;
GdkEventExpose child_event;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
bin = GTK_BIN (widget);
if (!GTK_WIDGET_IS_SENSITIVE (widget))
gdk_window_set_background (widget->window, &widget->style->bg[GTK_STATE_INSENSITIVE]);
else if (widget->state == GTK_STATE_NORMAL)
gdk_window_set_background (widget->window, &widget->style->white);
else
gdk_window_set_background (widget->window, &widget->style->bg[widget->state]);
gdk_window_clear_area (widget->window, event->area.x, event->area.y,
event->area.width, event->area.height);
if (bin->child)
{
child_event = *event;
if (GTK_WIDGET_NO_WINDOW (bin->child) &&
gtk_widget_intersect (bin->child, &event->area, &child_event.area))
gtk_widget_event (bin->child, (GdkEvent*) &child_event);
}
gtk_widget_draw_focus (widget);
}
return FALSE;
}
static gint
gtk_list_item_focus_in (GtkWidget *widget,
GdkEventFocus *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_draw_focus (widget);
return FALSE;
}
static gint
gtk_list_item_focus_out (GtkWidget *widget,
GdkEventFocus *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_draw_focus (widget);
return FALSE;
}
static void
gtk_real_list_item_select (GtkItem *item)
{
g_return_if_fail (item != NULL);
g_return_if_fail (GTK_IS_LIST_ITEM (item));
if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
return;
gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
gtk_widget_queue_draw (GTK_WIDGET (item));
}
static void
gtk_real_list_item_deselect (GtkItem *item)
{
g_return_if_fail (item != NULL);
g_return_if_fail (GTK_IS_LIST_ITEM (item));
if (GTK_WIDGET (item)->state == GTK_STATE_NORMAL)
return;
gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
gtk_widget_queue_draw (GTK_WIDGET (item));
}
static void
gtk_real_list_item_toggle (GtkItem *item)
{
g_return_if_fail (item != NULL);
g_return_if_fail (GTK_IS_LIST_ITEM (item));
if (GTK_WIDGET (item)->parent && GTK_IS_LIST (GTK_WIDGET (item)->parent))
gtk_list_select_child (GTK_LIST (GTK_WIDGET (item)->parent),
GTK_WIDGET (item));
else
{
/* Should we really bother with this bit? A listitem not in a list?
* -Johannes Keukelaar
* yes, always be on the save side!
* -timj
*/
if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
else
gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
gtk_widget_queue_draw (GTK_WIDGET (item));
}
}