288 lines
6.9 KiB
C
288 lines
6.9 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "gtkbin.h"
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static void gtk_bin_class_init (GtkBinClass *klass);
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static void gtk_bin_init (GtkBin *bin);
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static void gtk_bin_destroy (GtkObject *object);
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static void gtk_bin_map (GtkWidget *widget);
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static void gtk_bin_unmap (GtkWidget *widget);
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static void gtk_bin_draw (GtkWidget *widget,
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GdkRectangle *area);
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static gint gtk_bin_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static void gtk_bin_add (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_bin_remove (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_bin_foreach (GtkContainer *container,
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GtkCallback callback,
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gpointer callback_data);
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static GtkContainerClass *parent_class = NULL;
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guint
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gtk_bin_get_type ()
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{
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static guint bin_type = 0;
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if (!bin_type)
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{
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GtkTypeInfo bin_info =
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{
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"GtkBin",
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sizeof (GtkBin),
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sizeof (GtkBinClass),
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(GtkClassInitFunc) gtk_bin_class_init,
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(GtkObjectInitFunc) gtk_bin_init,
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(GtkArgSetFunc) NULL,
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(GtkArgGetFunc) NULL,
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};
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bin_type = gtk_type_unique (gtk_container_get_type (), &bin_info);
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}
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return bin_type;
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}
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static void
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gtk_bin_class_init (GtkBinClass *class)
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{
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GtkObjectClass *object_class;
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GtkWidgetClass *widget_class;
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GtkContainerClass *container_class;
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object_class = (GtkObjectClass*) class;
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widget_class = (GtkWidgetClass*) class;
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container_class = (GtkContainerClass*) class;
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parent_class = gtk_type_class (gtk_container_get_type ());
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object_class->destroy = gtk_bin_destroy;
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widget_class->map = gtk_bin_map;
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widget_class->unmap = gtk_bin_unmap;
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widget_class->draw = gtk_bin_draw;
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widget_class->expose_event = gtk_bin_expose;
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container_class->add = gtk_bin_add;
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container_class->remove = gtk_bin_remove;
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container_class->foreach = gtk_bin_foreach;
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}
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static void
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gtk_bin_init (GtkBin *bin)
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{
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GTK_WIDGET_SET_FLAGS (bin, GTK_NO_WINDOW);
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bin->child = NULL;
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}
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static void
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gtk_bin_destroy (GtkObject *object)
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{
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GtkBin *bin;
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g_return_if_fail (object != NULL);
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g_return_if_fail (GTK_IS_BIN (object));
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bin = GTK_BIN (object);
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if (bin->child)
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{
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bin->child->parent = NULL;
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gtk_object_unref (GTK_OBJECT (bin->child));
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gtk_widget_destroy (bin->child);
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}
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if (GTK_OBJECT_CLASS (parent_class)->destroy)
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(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
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}
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static void
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gtk_bin_map (GtkWidget *widget)
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{
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GtkBin *bin;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_BIN (widget));
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GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
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bin = GTK_BIN (widget);
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if (!GTK_WIDGET_NO_WINDOW (widget))
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gdk_window_show (widget->window);
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else
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gtk_widget_queue_draw (widget);
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if (bin->child &&
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GTK_WIDGET_VISIBLE (bin->child) &&
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!GTK_WIDGET_MAPPED (bin->child))
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gtk_widget_map (bin->child);
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}
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static void
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gtk_bin_unmap (GtkWidget *widget)
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{
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GtkBin *bin;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_BIN (widget));
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GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
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bin = GTK_BIN (widget);
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if (GTK_WIDGET_NO_WINDOW (widget))
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gdk_window_clear_area (widget->window,
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widget->allocation.x,
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widget->allocation.y,
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widget->allocation.width,
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widget->allocation.height);
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else
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gdk_window_hide (widget->window);
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if (bin->child &&
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GTK_WIDGET_VISIBLE (bin->child) &&
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GTK_WIDGET_MAPPED (bin->child))
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gtk_widget_unmap (bin->child);
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}
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static void
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gtk_bin_draw (GtkWidget *widget,
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GdkRectangle *area)
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{
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GtkBin *bin;
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GdkRectangle child_area;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_BIN (widget));
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if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
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{
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bin = GTK_BIN (widget);
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if (bin->child &&
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gtk_widget_intersect (bin->child, area, &child_area))
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gtk_widget_draw (bin->child, &child_area);
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}
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}
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static gint
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gtk_bin_expose (GtkWidget *widget,
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GdkEventExpose *event)
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{
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GtkBin *bin;
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GdkEventExpose child_event;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_BIN (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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if (GTK_WIDGET_DRAWABLE (widget))
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{
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bin = GTK_BIN (widget);
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child_event = *event;
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if (bin->child &&
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GTK_WIDGET_NO_WINDOW (bin->child) &&
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gtk_widget_intersect (bin->child, &event->area, &child_event.area))
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gtk_widget_event (bin->child, (GdkEvent*) &child_event);
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}
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return FALSE;
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}
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static void
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gtk_bin_add (GtkContainer *container,
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GtkWidget *widget)
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{
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GtkBin *bin;
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g_return_if_fail (container != NULL);
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g_return_if_fail (GTK_IS_BIN (container));
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g_return_if_fail (widget != NULL);
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bin = GTK_BIN (container);
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if (!bin->child)
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{
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gtk_widget_set_parent (widget, GTK_WIDGET (container));
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if (GTK_WIDGET_VISIBLE (widget->parent))
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{
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if (GTK_WIDGET_REALIZED (widget->parent) &&
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!GTK_WIDGET_REALIZED (widget))
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gtk_widget_realize (widget);
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if (GTK_WIDGET_MAPPED (widget->parent) &&
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!GTK_WIDGET_MAPPED (widget))
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gtk_widget_map (widget);
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}
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bin->child = widget;
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if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
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gtk_widget_queue_resize (widget);
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}
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}
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static void
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gtk_bin_remove (GtkContainer *container,
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GtkWidget *widget)
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{
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GtkBin *bin;
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g_return_if_fail (container != NULL);
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g_return_if_fail (GTK_IS_BIN (container));
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g_return_if_fail (widget != NULL);
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bin = GTK_BIN (container);
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if (bin->child == widget)
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{
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gtk_widget_unparent (widget);
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bin->child = NULL;
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if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
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gtk_widget_queue_resize (GTK_WIDGET (container));
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}
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}
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static void
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gtk_bin_foreach (GtkContainer *container,
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GtkCallback callback,
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gpointer callback_data)
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{
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GtkBin *bin;
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g_return_if_fail (container != NULL);
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g_return_if_fail (GTK_IS_BIN (container));
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g_return_if_fail (callback != NULL);
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bin = GTK_BIN (container);
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if (bin->child)
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(* callback) (bin->child, callback_data);
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}
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