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Diffstat (limited to 'eel/eel-gtk-container.c')
| -rw-r--r-- | eel/eel-gtk-container.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/eel/eel-gtk-container.c b/eel/eel-gtk-container.c new file mode 100644 index 00000000..033579c5 --- /dev/null +++ b/eel/eel-gtk-container.c @@ -0,0 +1,225 @@ +/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ + +/* eel-gtk-container.c - Functions to simplify the implementations of + GtkContainer widgets. + + Copyright (C) 2001 Ramiro Estrugo. + + The Mate 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. + + The Mate 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 the Mate Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + + Authors: Ramiro Estrugo <[email protected]> +*/ + +#include <config.h> +#include "eel-gtk-container.h" +#include "eel-art-extensions.h" + +/** + * eel_gtk_container_child_expose_event: + * + * @container: A GtkContainer widget. + * @child: A child of @container or NULL; + * @event: The expose event. + * + * Forward an expose event to a child if needed. It is valid to give a NULL @child. + * In that case this function is a noop. Proper clipping is done to ensure that the @child + * does indeed need to be forwarded the exposure event. Finally, the forwarding + * only occurs if the child is a NO_WINDOW widget. Of course, it is valid to feed + * non NO_WINDOW widgets to this function, in which case this function is a noop. + */ +void +eel_gtk_container_child_expose_event (GtkContainer *container, + GtkWidget *child, + GdkEventExpose *event) +{ + g_return_if_fail (GTK_IS_CONTAINER (container)); + + if (child == NULL) + { + return; + } + + g_return_if_fail (GTK_IS_WIDGET (child)); + + gtk_container_propagate_expose (container, child, event); +} + +/** + * eel_gtk_container_child_map: + * + * @container: A GtkContainer widget. + * @child: A child of @container or NULL; + * + * Map a child if needed. This is usually called from the "GtkWidget::map" + * method of the @container widget. If @child is NULL, then this function is a noop. + */ +void +eel_gtk_container_child_map (GtkContainer *container, + GtkWidget *child) +{ + g_return_if_fail (GTK_IS_CONTAINER (container)); + + if (child == NULL) + { + return; + } + + g_return_if_fail (gtk_widget_get_parent (child) == GTK_WIDGET (container)); + + if (gtk_widget_get_visible (child) && !gtk_widget_get_mapped (child)) + { + gtk_widget_map (child); + } +} + +/** + * eel_gtk_container_child_unmap: + * + * @container: A GtkContainer widget. + * @child: A child of @container or NULL; + * + * Unmap a child if needed. This is usually called from the "GtkWidget::unmap" + * method of the @container widget. If @child is NULL, then this function is a noop. + */ +void +eel_gtk_container_child_unmap (GtkContainer *container, + GtkWidget *child) +{ + g_return_if_fail (GTK_IS_CONTAINER (container)); + + if (child == NULL) + { + return; + } + + g_return_if_fail (gtk_widget_get_parent (child) == GTK_WIDGET (container)); + + if (gtk_widget_get_visible (child) && gtk_widget_get_mapped (child)) + { + gtk_widget_unmap (child); + } +} + +/** + * eel_gtk_container_child_add: + * + * @container: A GtkContainer widget. + * @child: A non NULL unparented child. + * + * Add a @child to a @container. The @child is realized, mapped + * and resized if needed. This is usually called from the "GtkContainer::add" + * method of the @container. The @child cannot be NULL. + */ +void +eel_gtk_container_child_add (GtkContainer *container, + GtkWidget *child) +{ + GtkWidget *widget; + + g_return_if_fail (GTK_IS_CONTAINER (container)); + g_return_if_fail (GTK_IS_WIDGET (child)); + + widget = GTK_WIDGET (container); + + gtk_widget_set_parent (child, widget); + + if (gtk_widget_get_realized (widget)) + { + gtk_widget_realize (child); + } + + if (gtk_widget_get_mapped (widget) + && gtk_widget_get_visible (child)) + { + if (gtk_widget_get_mapped (widget)) + { + gtk_widget_map (child); + } + + gtk_widget_queue_resize (child); + } +} + +/** + * eel_gtk_container_child_remove: + * + * @container: A GtkContainer widget. + * @child: A non NULL child of @container. + * + * Remove @child from @container. The @container is resized if needed. + * This is usually called from the "GtkContainer::remove" method of the + * @container. The child cannot be NULL. + */ +void +eel_gtk_container_child_remove (GtkContainer *container, + GtkWidget *child) +{ + gboolean child_was_visible; + + g_return_if_fail (GTK_IS_CONTAINER (container)); + g_return_if_fail (GTK_IS_WIDGET (child)); + g_return_if_fail (gtk_widget_get_parent (child) == GTK_WIDGET (container)); + + child_was_visible = gtk_widget_get_visible (child); + + gtk_widget_unparent (child); + + if (child_was_visible) + { + gtk_widget_queue_resize (GTK_WIDGET (container)); + } +} + +/** + * eel_gtk_container_child_size_allocate: + * + * @container: A GtkContainer widget. + * @child: A child of @container or NULL; + * + * Invoke the "GtkWidget::size_allocate" method of @child. + * This function is usually called from the "GtkWidget::size_allocate" + * method of @container. The child can be NULL, in which case this + * function is a noop. + */ +void +eel_gtk_container_child_size_allocate (GtkContainer *container, + GtkWidget *child, + EelIRect child_geometry) +{ + GtkAllocation child_allocation; + + g_return_if_fail (GTK_IS_CONTAINER (container)); + + if (child == NULL) + { + return; + } + + g_return_if_fail (GTK_IS_WIDGET (child)); + g_return_if_fail (gtk_widget_get_parent (child) == GTK_WIDGET (container)); + + if (eel_irect_is_empty (&child_geometry)) + { + return; + } + + child_allocation.x = child_geometry.x0; + child_allocation.y = child_geometry.y0; + child_allocation.width = eel_irect_get_width (child_geometry); + child_allocation.height = eel_irect_get_height (child_geometry); + + gtk_widget_size_allocate (child, &child_allocation); +} |