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 Library 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 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library 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.
19 #include "gtkdrawingarea.h"
22 static void gtk_drawing_area_class_init (GtkDrawingAreaClass *klass);
23 static void gtk_drawing_area_init (GtkDrawingArea *darea);
24 static void gtk_drawing_area_realize (GtkWidget *widget);
25 static void gtk_drawing_area_size_allocate (GtkWidget *widget,
26 GtkAllocation *allocation);
27 static void gtk_drawing_area_send_configure (GtkDrawingArea *darea);
31 gtk_drawing_area_get_type (void)
33 static guint drawing_area_type = 0;
35 if (!drawing_area_type)
37 GtkTypeInfo drawing_area_info =
40 sizeof (GtkDrawingArea),
41 sizeof (GtkDrawingAreaClass),
42 (GtkClassInitFunc) gtk_drawing_area_class_init,
43 (GtkObjectInitFunc) gtk_drawing_area_init,
44 /* reserved_1 */ NULL,
45 /* reserved_2 */ NULL,
46 (GtkClassInitFunc) NULL,
49 drawing_area_type = gtk_type_unique (gtk_widget_get_type (), &drawing_area_info);
52 return drawing_area_type;
56 gtk_drawing_area_class_init (GtkDrawingAreaClass *class)
58 GtkWidgetClass *widget_class;
60 widget_class = (GtkWidgetClass*) class;
62 widget_class->realize = gtk_drawing_area_realize;
63 widget_class->size_allocate = gtk_drawing_area_size_allocate;
67 gtk_drawing_area_init (GtkDrawingArea *darea)
69 darea->draw_data = NULL;
74 gtk_drawing_area_new (void)
76 return GTK_WIDGET (gtk_type_new (gtk_drawing_area_get_type ()));
80 gtk_drawing_area_size (GtkDrawingArea *darea,
84 g_return_if_fail (darea != NULL);
85 g_return_if_fail (GTK_IS_DRAWING_AREA (darea));
87 GTK_WIDGET (darea)->requisition.width = width;
88 GTK_WIDGET (darea)->requisition.height = height;
92 gtk_drawing_area_realize (GtkWidget *widget)
94 GtkDrawingArea *darea;
95 GdkWindowAttr attributes;
98 g_return_if_fail (widget != NULL);
99 g_return_if_fail (GTK_IS_DRAWING_AREA (widget));
101 darea = GTK_DRAWING_AREA (widget);
102 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
104 attributes.window_type = GDK_WINDOW_CHILD;
105 attributes.x = widget->allocation.x;
106 attributes.y = widget->allocation.y;
107 attributes.width = widget->allocation.width;
108 attributes.height = widget->allocation.height;
109 attributes.wclass = GDK_INPUT_OUTPUT;
110 attributes.visual = gtk_widget_get_visual (widget);
111 attributes.colormap = gtk_widget_get_colormap (widget);
112 attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
114 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
116 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
117 gdk_window_set_user_data (widget->window, darea);
119 widget->style = gtk_style_attach (widget->style, widget->window);
120 gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
122 gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget));
126 gtk_drawing_area_size_allocate (GtkWidget *widget,
127 GtkAllocation *allocation)
129 g_return_if_fail (widget != NULL);
130 g_return_if_fail (GTK_IS_DRAWING_AREA (widget));
131 g_return_if_fail (allocation != NULL);
133 widget->allocation = *allocation;
135 if (GTK_WIDGET_REALIZED (widget))
137 gdk_window_move_resize (widget->window,
138 allocation->x, allocation->y,
139 allocation->width, allocation->height);
141 gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget));
146 gtk_drawing_area_send_configure (GtkDrawingArea *darea)
149 GdkEventConfigure event;
151 widget = GTK_WIDGET (darea);
153 event.type = GDK_CONFIGURE;
154 event.window = widget->window;
155 event.x = widget->allocation.x;
156 event.y = widget->allocation.y;
157 event.width = widget->allocation.width;
158 event.height = widget->allocation.height;
160 gtk_widget_event (widget, (GdkEvent*) &event);