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gtk/gtk/gtkfixed.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 "gtkfixed.h"
#include "gtkintl.h"
enum {
CHILD_PROP_0,
CHILD_PROP_X,
CHILD_PROP_Y
};
static void gtk_fixed_class_init (GtkFixedClass *klass);
static void gtk_fixed_init (GtkFixed *fixed);
static void gtk_fixed_realize (GtkWidget *widget);
static void gtk_fixed_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_fixed_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_fixed_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_fixed_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_fixed_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static GtkType gtk_fixed_child_type (GtkContainer *container);
static void gtk_fixed_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_fixed_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec);
static GtkContainerClass *parent_class = NULL;
GtkType
gtk_fixed_get_type (void)
{
static GtkType fixed_type = 0;
if (!fixed_type)
{
static const GtkTypeInfo fixed_info =
{
"GtkFixed",
sizeof (GtkFixed),
sizeof (GtkFixedClass),
(GtkClassInitFunc) gtk_fixed_class_init,
(GtkObjectInitFunc) gtk_fixed_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
fixed_type = gtk_type_unique (GTK_TYPE_CONTAINER, &fixed_info);
}
return fixed_type;
}
static void
gtk_fixed_class_init (GtkFixedClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
widget_class->realize = gtk_fixed_realize;
widget_class->size_request = gtk_fixed_size_request;
widget_class->size_allocate = gtk_fixed_size_allocate;
container_class->add = gtk_fixed_add;
container_class->remove = gtk_fixed_remove;
container_class->forall = gtk_fixed_forall;
container_class->child_type = gtk_fixed_child_type;
container_class->set_child_property = gtk_fixed_set_child_property;
container_class->get_child_property = gtk_fixed_get_child_property;
gtk_container_class_install_child_property (container_class,
CHILD_PROP_X,
g_param_spec_int ("x",
_("X position"),
_("X position of child widget"),
G_MININT,
G_MAXINT,
0,
G_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_Y,
g_param_spec_int ("y",
_("Y position"),
_("Y position of child widget"),
G_MININT,
G_MAXINT,
0,
G_PARAM_READWRITE));
}
static GtkType
gtk_fixed_child_type (GtkContainer *container)
{
return GTK_TYPE_WIDGET;
}
static void
gtk_fixed_init (GtkFixed *fixed)
{
GTK_WIDGET_SET_FLAGS (fixed, GTK_NO_WINDOW);
fixed->children = NULL;
}
GtkWidget*
gtk_fixed_new (void)
{
GtkFixed *fixed;
fixed = gtk_type_new (GTK_TYPE_FIXED);
return GTK_WIDGET (fixed);
}
static GtkFixedChild*
get_child (GtkFixed *fixed,
GtkWidget *widget)
{
GList *children;
children = fixed->children;
while (children)
{
GtkFixedChild *child;
child = children->data;
children = children->next;
if (child->widget == widget)
return child;
}
return NULL;
}
void
gtk_fixed_put (GtkFixed *fixed,
GtkWidget *widget,
gint x,
gint y)
{
GtkFixedChild *child_info;
g_return_if_fail (GTK_IS_FIXED (fixed));
g_return_if_fail (GTK_IS_WIDGET (fixed));
child_info = g_new (GtkFixedChild, 1);
child_info->widget = widget;
child_info->x = x;
child_info->y = y;
gtk_widget_set_parent (widget, GTK_WIDGET (fixed));
fixed->children = g_list_append (fixed->children, child_info);
}
static void
gtk_fixed_move_internal (GtkFixed *fixed,
GtkWidget *widget,
gboolean change_x,
gint x,
gboolean change_y,
gint y)
{
GtkFixedChild *child;
g_return_if_fail (GTK_IS_FIXED (fixed));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (widget->parent == GTK_WIDGET (fixed));
child = get_child (fixed, widget);
g_assert (child);
gtk_widget_freeze_child_notify (widget);
if (change_x)
{
child->x = x;
gtk_widget_child_notify (widget, "x");
}
if (change_y)
{
child->y = y;
gtk_widget_child_notify (widget, "y");
}
gtk_widget_thaw_child_notify (widget);
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (fixed))
gtk_widget_queue_resize (GTK_WIDGET (fixed));
}
void
gtk_fixed_move (GtkFixed *fixed,
GtkWidget *widget,
gint x,
gint y)
{
gtk_fixed_move_internal (fixed, widget, TRUE, x, TRUE, y);
}
static void
gtk_fixed_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case CHILD_PROP_X:
gtk_fixed_move_internal (GTK_FIXED (container),
child,
TRUE, g_value_get_int (value),
FALSE, 0);
break;
case CHILD_PROP_Y:
gtk_fixed_move_internal (GTK_FIXED (container),
child,
FALSE, 0,
TRUE, g_value_get_int (value));
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_fixed_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkFixedChild *fixed_child;
fixed_child = get_child (GTK_FIXED (container), child);
switch (property_id)
{
case CHILD_PROP_X:
g_value_set_int (value, fixed_child->x);
break;
case CHILD_PROP_Y:
g_value_set_int (value, fixed_child->y);
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_fixed_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
if (GTK_WIDGET_NO_WINDOW (widget))
GTK_WIDGET_CLASS (parent_class)->realize (widget);
else
{
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes,
attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
}
static void
gtk_fixed_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkFixed *fixed;
GtkFixedChild *child;
GList *children;
GtkRequisition child_requisition;
fixed = GTK_FIXED (widget);
requisition->width = 0;
requisition->height = 0;
children = fixed->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
gtk_widget_size_request (child->widget, &child_requisition);
requisition->height = MAX (requisition->height,
child->y +
child_requisition.height);
requisition->width = MAX (requisition->width,
child->x +
child_requisition.width);
}
}
requisition->height += GTK_CONTAINER (fixed)->border_width * 2;
requisition->width += GTK_CONTAINER (fixed)->border_width * 2;
}
static void
gtk_fixed_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkFixed *fixed;
GtkFixedChild *child;
GtkAllocation child_allocation;
GtkRequisition child_requisition;
GList *children;
guint16 border_width;
fixed = GTK_FIXED (widget);
widget->allocation = *allocation;
if (!GTK_WIDGET_NO_WINDOW (widget))
{
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
allocation->x,
allocation->y,
allocation->width,
allocation->height);
}
border_width = GTK_CONTAINER (fixed)->border_width;
children = fixed->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
gtk_widget_get_child_requisition (child->widget, &child_requisition);
child_allocation.x = child->x + border_width;
child_allocation.y = child->y + border_width;
if (GTK_WIDGET_NO_WINDOW (widget))
{
child_allocation.x += widget->allocation.x;
child_allocation.y += widget->allocation.y;
}
child_allocation.width = child_requisition.width;
child_allocation.height = child_requisition.height;
gtk_widget_size_allocate (child->widget, &child_allocation);
}
}
}
static void
gtk_fixed_add (GtkContainer *container,
GtkWidget *widget)
{
gtk_fixed_put (GTK_FIXED (container), widget, 0, 0);
}
static void
gtk_fixed_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkFixed *fixed;
GtkFixedChild *child;
GList *children;
fixed = GTK_FIXED (container);
children = fixed->children;
while (children)
{
child = children->data;
if (child->widget == widget)
{
gboolean was_visible = GTK_WIDGET_VISIBLE (widget);
gtk_widget_unparent (widget);
fixed->children = g_list_remove_link (fixed->children, children);
g_list_free (children);
g_free (child);
if (was_visible && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (GTK_WIDGET (container));
break;
}
children = children->next;
}
}
static void
gtk_fixed_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkFixed *fixed;
GtkFixedChild *child;
GList *children;
g_return_if_fail (callback != NULL);
fixed = GTK_FIXED (container);
children = fixed->children;
while (children)
{
child = children->data;
children = children->next;
(* callback) (child->widget, callback_data);
}
}
/**
* gtk_fixed_set_has_window:
* @fixed: a #GtkFixed
* @has_window: %TRUE if a separate window should be created
*
* Sets whether a #GtkFixed widget is created with a separate
* #GdkWindow for widget->window or not. (By default, it will be
* created with no separate #GdkWindow). This function must be called
* while the #GtkFixed is not realized, for instance, immediately after the
* window is created.
**/
void
gtk_fixed_set_has_window (GtkFixed *fixed,
gboolean has_window)
{
g_return_if_fail (GTK_IS_FIXED (fixed));
g_return_if_fail (!GTK_WIDGET_REALIZED (fixed));
if (!has_window != GTK_WIDGET_NO_WINDOW (fixed))
{
if (has_window)
GTK_WIDGET_UNSET_FLAGS (fixed, GTK_NO_WINDOW);
else
GTK_WIDGET_SET_FLAGS (fixed, GTK_NO_WINDOW);
}
}
/**
* gtk_fixed_get_has_window:
* @fixed: a #GtkWidget
*
* Gets whether the #GtkFixed has it's own #GdkWindow.
* See gdk_fixed_set_has_window().
*
* Return value: %TRUE if @fixed has its own window.
**/
gboolean
gtk_fixed_get_has_window (GtkFixed *fixed)
{
g_return_val_if_fail (GTK_IS_FIXED (fixed), FALSE);
return !GTK_WIDGET_NO_WINDOW (fixed);
}
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