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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 "gtkdrawingarea.h"
static void gtk_drawing_area_class_init (GtkDrawingAreaClass *klass);
static void gtk_drawing_area_init (GtkDrawingArea *darea);
static void gtk_drawing_area_realize (GtkWidget *widget);
static void gtk_drawing_area_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_drawing_area_send_configure (GtkDrawingArea *darea);
GType
gtk_drawing_area_get_type (void)
{
static GType drawing_area_type = 0;
if (!drawing_area_type)
{
static const GTypeInfo drawing_area_info =
{
sizeof (GtkDrawingAreaClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_drawing_area_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkDrawingArea),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_drawing_area_init,
};
drawing_area_type =
g_type_register_static (GTK_TYPE_WIDGET, "GtkDrawingArea",
&drawing_area_info, 0);
}
return drawing_area_type;
}
static void
gtk_drawing_area_class_init (GtkDrawingAreaClass *class)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
widget_class->realize = gtk_drawing_area_realize;
widget_class->size_allocate = gtk_drawing_area_size_allocate;
}
static void
gtk_drawing_area_init (GtkDrawingArea *darea)
{
darea->draw_data = NULL;
}
GtkWidget*
gtk_drawing_area_new (void)
{
return g_object_new (GTK_TYPE_DRAWING_AREA, NULL);
}
void
gtk_drawing_area_size (GtkDrawingArea *darea,
gint width,
gint height)
{
g_return_if_fail (GTK_IS_DRAWING_AREA (darea));
GTK_WIDGET (darea)->requisition.width = width;
GTK_WIDGET (darea)->requisition.height = height;
gtk_widget_queue_resize (GTK_WIDGET (darea));
}
static void
gtk_drawing_area_realize (GtkWidget *widget)
{
GtkDrawingArea *darea;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (GTK_IS_DRAWING_AREA (widget));
darea = GTK_DRAWING_AREA (widget);
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) | GDK_EXPOSURE_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, darea);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget));
}
static void
gtk_drawing_area_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
g_return_if_fail (GTK_IS_DRAWING_AREA (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);
gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget));
}
}
static void
gtk_drawing_area_send_configure (GtkDrawingArea *darea)
{
GtkWidget *widget;
GdkEvent *event = gdk_event_new (GDK_CONFIGURE);
widget = GTK_WIDGET (darea);
event->configure.window = g_object_ref (widget->window);
event->configure.send_event = TRUE;
event->configure.x = widget->allocation.x;
event->configure.y = widget->allocation.y;
event->configure.width = widget->allocation.width;
event->configure.height = widget->allocation.height;
gtk_widget_event (widget, event);
gdk_event_free (event);
}
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