1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
27 #include "gtkdrawingarea.h"
30 static void gtk_drawing_area_class_init (GtkDrawingAreaClass *klass);
31 static void gtk_drawing_area_init (GtkDrawingArea *darea);
32 static void gtk_drawing_area_realize (GtkWidget *widget);
33 static void gtk_drawing_area_size_allocate (GtkWidget *widget,
34 GtkAllocation *allocation);
35 static void gtk_drawing_area_send_configure (GtkDrawingArea *darea);
39 gtk_drawing_area_get_type (void)
41 static GtkType drawing_area_type = 0;
43 if (!drawing_area_type)
45 static const GtkTypeInfo drawing_area_info =
48 sizeof (GtkDrawingArea),
49 sizeof (GtkDrawingAreaClass),
50 (GtkClassInitFunc) gtk_drawing_area_class_init,
51 (GtkObjectInitFunc) gtk_drawing_area_init,
52 /* reserved_1 */ NULL,
53 /* reserved_2 */ NULL,
54 (GtkClassInitFunc) NULL,
57 drawing_area_type = gtk_type_unique (GTK_TYPE_WIDGET, &drawing_area_info);
60 return drawing_area_type;
64 gtk_drawing_area_class_init (GtkDrawingAreaClass *class)
66 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
68 widget_class->realize = gtk_drawing_area_realize;
69 widget_class->size_allocate = gtk_drawing_area_size_allocate;
73 gtk_drawing_area_init (GtkDrawingArea *darea)
75 darea->draw_data = NULL;
80 gtk_drawing_area_new (void)
82 return GTK_WIDGET (gtk_type_new (GTK_TYPE_DRAWING_AREA));
86 gtk_drawing_area_size (GtkDrawingArea *darea,
90 g_return_if_fail (GTK_IS_DRAWING_AREA (darea));
92 GTK_WIDGET (darea)->requisition.width = width;
93 GTK_WIDGET (darea)->requisition.height = height;
95 gtk_widget_queue_resize (GTK_WIDGET (darea));
99 gtk_drawing_area_realize (GtkWidget *widget)
101 GtkDrawingArea *darea;
102 GdkWindowAttr attributes;
103 gint attributes_mask;
105 g_return_if_fail (widget != NULL);
106 g_return_if_fail (GTK_IS_DRAWING_AREA (widget));
108 darea = GTK_DRAWING_AREA (widget);
109 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
111 attributes.window_type = GDK_WINDOW_CHILD;
112 attributes.x = widget->allocation.x;
113 attributes.y = widget->allocation.y;
114 attributes.width = widget->allocation.width;
115 attributes.height = widget->allocation.height;
116 attributes.wclass = GDK_INPUT_OUTPUT;
117 attributes.visual = gtk_widget_get_visual (widget);
118 attributes.colormap = gtk_widget_get_colormap (widget);
119 attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
121 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
123 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
124 gdk_window_set_user_data (widget->window, darea);
126 widget->style = gtk_style_attach (widget->style, widget->window);
127 gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
129 gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget));
133 gtk_drawing_area_size_allocate (GtkWidget *widget,
134 GtkAllocation *allocation)
136 g_return_if_fail (widget != NULL);
137 g_return_if_fail (GTK_IS_DRAWING_AREA (widget));
138 g_return_if_fail (allocation != NULL);
140 widget->allocation = *allocation;
142 if (GTK_WIDGET_REALIZED (widget))
144 gdk_window_move_resize (widget->window,
145 allocation->x, allocation->y,
146 allocation->width, allocation->height);
148 gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget));
153 gtk_drawing_area_send_configure (GtkDrawingArea *darea)
156 GdkEventConfigure event;
158 widget = GTK_WIDGET (darea);
160 event.type = GDK_CONFIGURE;
161 event.window = widget->window;
162 event.send_event = TRUE;
163 event.x = widget->allocation.x;
164 event.y = widget->allocation.y;
165 event.width = widget->allocation.width;
166 event.height = widget->allocation.height;
168 gtk_widget_event (widget, (GdkEvent*) &event);