diff options
Diffstat (limited to 'gtk/gtkbin.c')
| -rw-r--r-- | gtk/gtkbin.c | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/gtk/gtkbin.c b/gtk/gtkbin.c new file mode 100644 index 000000000..4cb7efcc1 --- /dev/null +++ b/gtk/gtkbin.c @@ -0,0 +1,286 @@ +/* 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 Library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include "gtkbin.h" + + +static void gtk_bin_class_init (GtkBinClass *klass); +static void gtk_bin_init (GtkBin *bin); +static void gtk_bin_destroy (GtkObject *object); +static void gtk_bin_map (GtkWidget *widget); +static void gtk_bin_unmap (GtkWidget *widget); +static void gtk_bin_draw (GtkWidget *widget, + GdkRectangle *area); +static gint gtk_bin_expose (GtkWidget *widget, + GdkEventExpose *event); +static void gtk_bin_add (GtkContainer *container, + GtkWidget *widget); +static void gtk_bin_remove (GtkContainer *container, + GtkWidget *widget); +static void gtk_bin_foreach (GtkContainer *container, + GtkCallback callback, + gpointer callback_data); + + +static GtkContainerClass *parent_class = NULL; + + +guint +gtk_bin_get_type () +{ + static guint bin_type = 0; + + if (!bin_type) + { + GtkTypeInfo bin_info = + { + "GtkBin", + sizeof (GtkBin), + sizeof (GtkBinClass), + (GtkClassInitFunc) gtk_bin_class_init, + (GtkObjectInitFunc) gtk_bin_init, + (GtkArgFunc) NULL, + }; + + bin_type = gtk_type_unique (gtk_container_get_type (), &bin_info); + } + + return bin_type; +} + +static void +gtk_bin_class_init (GtkBinClass *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_container_get_type ()); + + object_class->destroy = gtk_bin_destroy; + + widget_class->map = gtk_bin_map; + widget_class->unmap = gtk_bin_unmap; + widget_class->draw = gtk_bin_draw; + widget_class->expose_event = gtk_bin_expose; + + container_class->add = gtk_bin_add; + container_class->remove = gtk_bin_remove; + container_class->foreach = gtk_bin_foreach; +} + +static void +gtk_bin_init (GtkBin *bin) +{ + GTK_WIDGET_SET_FLAGS (bin, GTK_NO_WINDOW); + + bin->child = NULL; +} + + +static void +gtk_bin_destroy (GtkObject *object) +{ + GtkBin *bin; + + g_return_if_fail (object != NULL); + g_return_if_fail (GTK_IS_BIN (object)); + + bin = GTK_BIN (object); + + if (bin->child) + { + bin->child->parent = NULL; + gtk_object_unref (GTK_OBJECT (bin->child)); + gtk_widget_destroy (bin->child); + } + + if (GTK_OBJECT_CLASS (parent_class)->destroy) + (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); +} + +static void +gtk_bin_map (GtkWidget *widget) +{ + GtkBin *bin; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_BIN (widget)); + + GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED); + bin = GTK_BIN (widget); + + if (!GTK_WIDGET_NO_WINDOW (widget)) + gdk_window_show (widget->window); + else + gtk_widget_queue_draw (widget); + + if (bin->child && + GTK_WIDGET_VISIBLE (bin->child) && + !GTK_WIDGET_MAPPED (bin->child)) + gtk_widget_map (bin->child); +} + +static void +gtk_bin_unmap (GtkWidget *widget) +{ + GtkBin *bin; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_BIN (widget)); + + GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED); + bin = GTK_BIN (widget); + + if (GTK_WIDGET_NO_WINDOW (widget)) + gdk_window_clear_area (widget->window, + widget->allocation.x, + widget->allocation.y, + widget->allocation.width, + widget->allocation.height); + else + gdk_window_hide (widget->window); + + if (bin->child && + GTK_WIDGET_VISIBLE (bin->child) && + GTK_WIDGET_MAPPED (bin->child)) + gtk_widget_unmap (bin->child); +} + +static void +gtk_bin_draw (GtkWidget *widget, + GdkRectangle *area) +{ + GtkBin *bin; + GdkRectangle child_area; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_BIN (widget)); + + if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget)) + { + bin = GTK_BIN (widget); + + if (bin->child && + gtk_widget_intersect (bin->child, area, &child_area)) + gtk_widget_draw (bin->child, &child_area); + } +} + +static gint +gtk_bin_expose (GtkWidget *widget, + GdkEventExpose *event) +{ + GtkBin *bin; + GdkEventExpose child_event; + + g_return_val_if_fail (widget != NULL, FALSE); + g_return_val_if_fail (GTK_IS_BIN (widget), FALSE); + g_return_val_if_fail (event != NULL, FALSE); + + if (GTK_WIDGET_DRAWABLE (widget)) + { + bin = GTK_BIN (widget); + + child_event = *event; + if (bin->child && + GTK_WIDGET_NO_WINDOW (bin->child) && + gtk_widget_intersect (bin->child, &event->area, &child_event.area)) + gtk_widget_event (bin->child, (GdkEvent*) &child_event); + } + + return FALSE; +} + + +static void +gtk_bin_add (GtkContainer *container, + GtkWidget *widget) +{ + GtkBin *bin; + + g_return_if_fail (container != NULL); + g_return_if_fail (GTK_IS_BIN (container)); + g_return_if_fail (widget != NULL); + + bin = GTK_BIN (container); + + if (!bin->child) + { + gtk_widget_set_parent (widget, GTK_WIDGET (container)); + + if (GTK_WIDGET_VISIBLE (widget->parent)) + { + if (GTK_WIDGET_REALIZED (widget->parent) && + !GTK_WIDGET_REALIZED (widget)) + gtk_widget_realize (widget); + + if (GTK_WIDGET_MAPPED (widget->parent) && + !GTK_WIDGET_MAPPED (widget)) + gtk_widget_map (widget); + } + + bin->child = widget; + + if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container)) + gtk_widget_queue_resize (widget); + } +} + +static void +gtk_bin_remove (GtkContainer *container, + GtkWidget *widget) +{ + GtkBin *bin; + + g_return_if_fail (container != NULL); + g_return_if_fail (GTK_IS_BIN (container)); + g_return_if_fail (widget != NULL); + + bin = GTK_BIN (container); + + if (bin->child == widget) + { + gtk_widget_unparent (widget); + + bin->child = NULL; + + if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container)) + gtk_widget_queue_resize (GTK_WIDGET (container)); + } +} + +static void +gtk_bin_foreach (GtkContainer *container, + GtkCallback callback, + gpointer callback_data) +{ + GtkBin *bin; + + g_return_if_fail (container != NULL); + g_return_if_fail (GTK_IS_BIN (container)); + g_return_if_fail (callback != NULL); + + bin = GTK_BIN (container); + + if (bin->child) + (* callback) (bin->child, callback_data); +} |