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gtk/gtk/gtkbbox.c

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/* 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 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 "gtkbbox.h"
#include "gtkintl.h"
enum {
PROP_0,
PROP_LAYOUT_STYLE,
PROP_LAST
};
enum {
CHILD_PROP_0,
CHILD_PROP_SECONDARY
};
static void gtk_button_box_class_init (GtkButtonBoxClass *klass);
static void gtk_button_box_init (GtkButtonBox *box);
static void gtk_button_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_button_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_button_box_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_button_box_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec);
#define DEFAULT_CHILD_MIN_WIDTH 85
#define DEFAULT_CHILD_MIN_HEIGHT 27
#define DEFAULT_CHILD_IPAD_X 4
#define DEFAULT_CHILD_IPAD_Y 0
GtkType
gtk_button_box_get_type (void)
{
static GtkType button_box_type = 0;
if (!button_box_type)
{
static const GtkTypeInfo button_box_info =
{
"GtkButtonBox",
sizeof (GtkButtonBox),
sizeof (GtkButtonBoxClass),
(GtkClassInitFunc) gtk_button_box_class_init,
(GtkObjectInitFunc) gtk_button_box_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
button_box_type = gtk_type_unique (gtk_box_get_type (), &button_box_info);
}
return button_box_type;
}
static void
gtk_button_box_class_init (GtkButtonBoxClass *class)
{
GtkWidgetClass *widget_class;
GObjectClass *gobject_class;
GtkContainerClass *container_class;
gobject_class = G_OBJECT_CLASS (class);
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
gobject_class->set_property = gtk_button_box_set_property;
gobject_class->get_property = gtk_button_box_get_property;
container_class->set_child_property = gtk_button_box_set_child_property;
container_class->get_child_property = gtk_button_box_get_child_property;
/* FIXME we need to override the "spacing" property on GtkBox once
* libgobject allows that.
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("child_min_width",
_("Minimum child width"),
_("Minimum width of buttons inside the box"),
0,
G_MAXINT,
DEFAULT_CHILD_MIN_WIDTH,
G_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("child_min_height",
_("Minimum child height"),
_("Minimum height of buttons inside the box"),
0,
G_MAXINT,
DEFAULT_CHILD_MIN_HEIGHT,
G_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("child_internal_pad_x",
_("Child internal width padding"),
_("Amount to increase child's size on either side"),
0,
G_MAXINT,
DEFAULT_CHILD_IPAD_X,
G_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("child_internal_pad_y",
_("Child internal height padding"),
_("Amount to increase child's size on the top and bottom"),
0,
G_MAXINT,
DEFAULT_CHILD_IPAD_Y,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_LAYOUT_STYLE,
g_param_spec_enum ("layout_style",
_("Layout style"),
_("How to layout the buttons in the box. Possible values are default, spread, edge, start and end"),
GTK_TYPE_BUTTON_BOX_STYLE,
GTK_BUTTONBOX_DEFAULT_STYLE,
G_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_SECONDARY,
g_param_spec_boolean ("secondary",
_("Secondary"),
_("If TRUE, the child appears in a secondary group of children, suitable for, e.g., help buttons."),
FALSE,
G_PARAM_READWRITE));
}
static void
gtk_button_box_init (GtkButtonBox *button_box)
{
GTK_BOX (button_box)->spacing = 0;
button_box->child_min_width = GTK_BUTTONBOX_DEFAULT;
button_box->child_min_height = GTK_BUTTONBOX_DEFAULT;
button_box->child_ipad_x = GTK_BUTTONBOX_DEFAULT;
button_box->child_ipad_y = GTK_BUTTONBOX_DEFAULT;
button_box->layout_style = GTK_BUTTONBOX_DEFAULT_STYLE;
}
static void
gtk_button_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
switch (prop_id)
{
case PROP_LAYOUT_STYLE:
gtk_button_box_set_layout (GTK_BUTTON_BOX (object),
g_value_get_enum (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_button_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
switch (prop_id)
{
case PROP_LAYOUT_STYLE:
g_value_set_enum (value, GTK_BUTTON_BOX (object)->layout_style);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_button_box_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case CHILD_PROP_SECONDARY:
gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (container), child,
g_value_get_boolean (value));
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_button_box_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GList *list;
GtkBoxChild *child_info = NULL;
list = GTK_BOX (container)->children;
while (list)
{
child_info = list->data;
if (child_info->widget == child)
break;
list = list->next;
}
g_assert (list != NULL);
switch (property_id)
{
case CHILD_PROP_SECONDARY:
g_value_set_boolean (value, child_info->is_secondary);
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
/* set per widget values for spacing, child size and child internal padding */
void
gtk_button_box_set_child_size (GtkButtonBox *widget,
gint width, gint height)
{
g_return_if_fail (GTK_IS_BUTTON_BOX (widget));
widget->child_min_width = width;
widget->child_min_height = height;
}
void
gtk_button_box_set_child_ipadding (GtkButtonBox *widget,
gint ipad_x, gint ipad_y)
{
g_return_if_fail (GTK_IS_BUTTON_BOX (widget));
widget->child_ipad_x = ipad_x;
widget->child_ipad_y = ipad_y;
}
void
gtk_button_box_set_layout (GtkButtonBox *widget,
GtkButtonBoxStyle layout_style)
{
g_return_if_fail (GTK_IS_BUTTON_BOX (widget));
g_return_if_fail (layout_style >= GTK_BUTTONBOX_DEFAULT_STYLE &&
layout_style <= GTK_BUTTONBOX_END);
if (widget->layout_style != layout_style)
{
widget->layout_style = layout_style;
g_object_notify (G_OBJECT (widget), "layout_style");
gtk_widget_queue_resize (GTK_WIDGET (widget));
}
}
/* get per widget values for spacing, child size and child internal padding */
void
gtk_button_box_get_child_size (GtkButtonBox *widget,
gint *width, gint *height)
{
g_return_if_fail (GTK_IS_BUTTON_BOX (widget));
g_return_if_fail (width != NULL);
g_return_if_fail (height != NULL);
*width = widget->child_min_width;
*height = widget->child_min_height;
}
void
gtk_button_box_get_child_ipadding (GtkButtonBox *widget,
gint* ipad_x, gint *ipad_y)
{
g_return_if_fail (GTK_IS_BUTTON_BOX (widget));
g_return_if_fail (ipad_x != NULL);
g_return_if_fail (ipad_y != NULL);
*ipad_x = widget->child_ipad_x;
*ipad_y = widget->child_ipad_y;
}
GtkButtonBoxStyle
gtk_button_box_get_layout (GtkButtonBox *widget)
{
g_return_val_if_fail (GTK_IS_BUTTON_BOX (widget), GTK_BUTTONBOX_SPREAD);
return widget->layout_style;
}
/**
* gtk_button_box_set_child_secondary
* @widget: a #GtkButtonBox
* @child: a child of @widget
* @is_secondary: if %TRUE, the @child appears in a secondary group of the
* button box.
*
* Sets whether @child should appear in a secondary group of children.
* A typical use of a secondary child is the help button in a dialog.
*
* This group appears after the other children if the style
* is %GTK_BUTTONBOX_START, %GTK_BUTTONBOX_SPREAD or
* %GTK_BUTTONBOX_EDGE, and before the the other children if the style
* is %GTK_BUTTONBOX_END. For horizontal button boxes, the definition
* of before/after depends on direction of the widget (see
* gtk_widget_set_direction()). If the style is %GTK_BUTTONBOX_START
* or %GTK_BUTTONBOX_END, then the secondary children are aligned at
* the other end of the button box from the main children. For the
* other styles, they appear immediately next to the main children.
**/
void
gtk_button_box_set_child_secondary (GtkButtonBox *widget,
GtkWidget *child,
gboolean is_secondary)
{
GList *list;
g_return_if_fail (GTK_IS_BUTTON_BOX (widget));
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (child->parent == GTK_WIDGET (widget));
list = GTK_BOX (widget)->children;
while (list)
{
GtkBoxChild *child_info = list->data;
if (child_info->widget == child)
{
child_info->is_secondary = is_secondary;
break;
}
list = list->next;
}
gtk_widget_child_notify (child, "secondary");
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (child))
gtk_widget_queue_resize (child);
}
/* Ask children how much space they require and round up
to match minimum size and internal padding.
Returns the size each single child should have. */
void
_gtk_button_box_child_requisition (GtkWidget *widget,
int *nvis_children,
int *nvis_secondaries,
int *width,
int *height)
{
GtkButtonBox *bbox;
GtkBoxChild *child;
GList *children;
gint nchildren;
gint nsecondaries;
gint needed_width;
gint needed_height;
GtkRequisition child_requisition;
gint ipad_w;
gint ipad_h;
gint width_default;
gint height_default;
gint ipad_x_default;
gint ipad_y_default;
gint child_min_width;
gint child_min_height;
gint ipad_x;
gint ipad_y;
g_return_if_fail (GTK_IS_BUTTON_BOX (widget));
bbox = GTK_BUTTON_BOX (widget);
gtk_widget_style_get (widget,
"child_min_width",
&width_default,
"child_min_height",
&height_default,
"child_internal_pad_x",
&ipad_x_default,
"child_internal_pad_y",
&ipad_y_default, NULL);
child_min_width = bbox->child_min_width != GTK_BUTTONBOX_DEFAULT
? bbox->child_min_width : width_default;
child_min_height = bbox->child_min_height !=GTK_BUTTONBOX_DEFAULT
? bbox->child_min_height : height_default;
ipad_x = bbox->child_ipad_x != GTK_BUTTONBOX_DEFAULT
? bbox->child_ipad_x : ipad_x_default;
ipad_y = bbox->child_ipad_y != GTK_BUTTONBOX_DEFAULT
? bbox->child_ipad_y : ipad_y_default;
nchildren = 0;
nsecondaries = 0;
children = GTK_BOX(bbox)->children;
needed_width = child_min_width;
needed_height = child_min_height;
ipad_w = ipad_x * 2;
ipad_h = ipad_y * 2;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
nchildren += 1;
gtk_widget_size_request (child->widget, &child_requisition);
if (child_requisition.width + ipad_w > needed_width)
needed_width = child_requisition.width + ipad_w;
if (child_requisition.height + ipad_h > needed_height)
needed_height = child_requisition.height + ipad_h;
if (child->is_secondary)
nsecondaries++;
}
}
if (nvis_children)
*nvis_children = nchildren;
if (nvis_secondaries)
*nvis_secondaries = nsecondaries;
if (width)
*width = needed_width;
if (height)
*height = needed_height;
}
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