292 lines
7.6 KiB
C
292 lines
7.6 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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gtkvbbox.h"
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#include "gtkintl.h"
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#include "gtkalias.h"
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static void gtk_vbutton_box_size_request (GtkWidget *widget,
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GtkRequisition *requisition);
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static void gtk_vbutton_box_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static gint default_spacing = 10;
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static GtkButtonBoxStyle default_layout_style = GTK_BUTTONBOX_EDGE;
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G_DEFINE_TYPE (GtkVButtonBox, gtk_vbutton_box, GTK_TYPE_BUTTON_BOX)
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static void
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gtk_vbutton_box_class_init (GtkVButtonBoxClass *class)
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{
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GtkWidgetClass *widget_class;
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widget_class = (GtkWidgetClass*) class;
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widget_class->size_request = gtk_vbutton_box_size_request;
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widget_class->size_allocate = gtk_vbutton_box_size_allocate;
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}
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static void
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gtk_vbutton_box_init (GtkVButtonBox *vbutton_box)
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{
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/* button_box_init has done everything allready */
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}
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GtkWidget*
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gtk_vbutton_box_new (void)
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{
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GtkVButtonBox *vbutton_box;
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vbutton_box = g_object_new (GTK_TYPE_VBUTTON_BOX, NULL);
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return GTK_WIDGET (vbutton_box);
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}
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/* set default value for spacing */
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void
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gtk_vbutton_box_set_spacing_default (gint spacing)
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{
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default_spacing = spacing;
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}
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/* set default value for layout style */
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void
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gtk_vbutton_box_set_layout_default (GtkButtonBoxStyle layout)
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{
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g_return_if_fail (layout >= GTK_BUTTONBOX_DEFAULT_STYLE &&
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layout <= GTK_BUTTONBOX_CENTER);
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default_layout_style = layout;
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}
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/* get default value for spacing */
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gint
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gtk_vbutton_box_get_spacing_default (void)
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{
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return default_spacing;
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}
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/* get default value for layout style */
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GtkButtonBoxStyle
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gtk_vbutton_box_get_layout_default (void)
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{
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return default_layout_style;
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}
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static void
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gtk_vbutton_box_size_request (GtkWidget *widget,
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GtkRequisition *requisition)
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{
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GtkBox *box;
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GtkButtonBox *bbox;
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gint nvis_children;
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gint child_width;
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gint child_height;
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gint spacing;
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GtkButtonBoxStyle layout;
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box = GTK_BOX (widget);
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bbox = GTK_BUTTON_BOX (widget);
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spacing = box->spacing;
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layout = bbox->layout_style != GTK_BUTTONBOX_DEFAULT_STYLE
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? bbox->layout_style : default_layout_style;
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_gtk_button_box_child_requisition (widget,
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&nvis_children,
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NULL,
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&child_width,
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&child_height);
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if (nvis_children == 0)
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{
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requisition->width = 0;
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requisition->height = 0;
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}
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else
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{
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switch (layout)
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{
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case GTK_BUTTONBOX_SPREAD:
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requisition->height =
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nvis_children*child_height + ((nvis_children+1)*spacing);
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break;
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case GTK_BUTTONBOX_EDGE:
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case GTK_BUTTONBOX_START:
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case GTK_BUTTONBOX_END:
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case GTK_BUTTONBOX_CENTER:
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requisition->height =
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nvis_children*child_height + ((nvis_children-1)*spacing);
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break;
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default:
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g_assert_not_reached();
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break;
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}
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requisition->width = child_width;
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}
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requisition->width += GTK_CONTAINER (box)->border_width * 2;
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requisition->height += GTK_CONTAINER (box)->border_width * 2;
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}
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static void
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gtk_vbutton_box_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkBox *base_box;
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GtkButtonBox *box;
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GtkBoxChild *child;
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GList *children;
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GtkAllocation child_allocation;
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gint nvis_children;
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gint n_secondaries;
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gint child_width;
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gint child_height;
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gint x = 0;
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gint y = 0;
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gint secondary_y = 0;
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gint height;
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gint childspace;
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gint childspacing = 0;
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GtkButtonBoxStyle layout;
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gint spacing;
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base_box = GTK_BOX (widget);
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box = GTK_BUTTON_BOX (widget);
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spacing = base_box->spacing;
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layout = box->layout_style != GTK_BUTTONBOX_DEFAULT_STYLE
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? box->layout_style : default_layout_style;
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_gtk_button_box_child_requisition (widget,
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&nvis_children,
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&n_secondaries,
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&child_width,
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&child_height);
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widget->allocation = *allocation;
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height = allocation->height - GTK_CONTAINER (box)->border_width*2;
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switch (layout)
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{
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case GTK_BUTTONBOX_SPREAD:
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childspacing = (height - (nvis_children * child_height)) / (nvis_children + 1);
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y = allocation->y + GTK_CONTAINER (box)->border_width + childspacing;
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secondary_y = y + ((nvis_children - n_secondaries) * (child_height + childspacing));
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break;
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case GTK_BUTTONBOX_EDGE:
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if (nvis_children >= 2)
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{
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childspacing = (height - (nvis_children*child_height)) / (nvis_children-1);
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y = allocation->y + GTK_CONTAINER (box)->border_width;
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secondary_y = y + ((nvis_children - n_secondaries) * (child_height + childspacing));
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}
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else
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{
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/* one or zero children, just center */
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childspacing = height;
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y = secondary_y = allocation->y + (allocation->height - child_height) / 2;
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}
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break;
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case GTK_BUTTONBOX_START:
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childspacing = spacing;
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y = allocation->y + GTK_CONTAINER (box)->border_width;
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secondary_y = allocation->y + allocation->height
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- child_height * n_secondaries
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- spacing * (n_secondaries - 1)
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- GTK_CONTAINER (box)->border_width;
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break;
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case GTK_BUTTONBOX_END:
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childspacing = spacing;
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y = allocation->y + allocation->height
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- child_height * (nvis_children - n_secondaries)
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- spacing * (nvis_children - n_secondaries - 1)
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- GTK_CONTAINER (box)->border_width;
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secondary_y = allocation->y + GTK_CONTAINER (box)->border_width;
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break;
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case GTK_BUTTONBOX_CENTER:
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childspacing = spacing;
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y = allocation->y +
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(allocation->height
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- (child_height * (nvis_children - n_secondaries)
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+ spacing * (nvis_children - n_secondaries - 1)))/2
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+ (n_secondaries * child_height + n_secondaries * spacing)/2;
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secondary_y = allocation->y + GTK_CONTAINER (box)->border_width;
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break;
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default:
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g_assert_not_reached();
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break;
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}
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x = allocation->x + (allocation->width - child_width) / 2;
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childspace = child_height + childspacing;
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children = GTK_BOX (box)->children;
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while (children)
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{
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child = children->data;
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children = children->next;
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if (GTK_WIDGET_VISIBLE (child->widget))
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{
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child_allocation.width = child_width;
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child_allocation.height = child_height;
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child_allocation.x = x;
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if (child->is_secondary)
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{
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child_allocation.y = secondary_y;
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secondary_y += childspace;
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}
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else
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{
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child_allocation.y = y;
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y += childspace;
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}
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gtk_widget_size_allocate (child->widget, &child_allocation);
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}
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}
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}
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#define __GTK_VBBOX_C__
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#include "gtkaliasdef.c"
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