/* 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include "gtkhbbox.h" static void gtk_hbutton_box_class_init (GtkHButtonBoxClass *klass); static void gtk_hbutton_box_init (GtkHButtonBox *box); static void gtk_hbutton_box_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gtk_hbutton_box_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static gint default_spacing = 30; static gint default_layout_style = GTK_BUTTONBOX_EDGE; guint gtk_hbutton_box_get_type (void) { static guint hbutton_box_type = 0; if (!hbutton_box_type) { GtkTypeInfo hbutton_box_info = { "GtkHButtonBox", sizeof (GtkHButtonBox), sizeof (GtkHButtonBoxClass), (GtkClassInitFunc) gtk_hbutton_box_class_init, (GtkObjectInitFunc) gtk_hbutton_box_init, /* reserved_1 */ NULL, /* reserved_2 */ NULL, (GtkClassInitFunc) NULL, }; hbutton_box_type = gtk_type_unique (gtk_button_box_get_type (), &hbutton_box_info); } return hbutton_box_type; } static void gtk_hbutton_box_class_init (GtkHButtonBoxClass *class) { GtkWidgetClass *widget_class; widget_class = (GtkWidgetClass*) class; widget_class->size_request = gtk_hbutton_box_size_request; widget_class->size_allocate = gtk_hbutton_box_size_allocate; } static void gtk_hbutton_box_init (GtkHButtonBox *hbutton_box) { /* button_box_init has done everything allready */ } GtkWidget* gtk_hbutton_box_new (void) { GtkHButtonBox *hbutton_box; hbutton_box = gtk_type_new (gtk_hbutton_box_get_type ()); return GTK_WIDGET (hbutton_box); } /* set default value for spacing */ void gtk_hbutton_box_set_spacing_default (gint spacing) { default_spacing = spacing; } /* set default value for layout style */ void gtk_hbutton_box_set_layout_default (GtkButtonBoxStyle layout) { g_return_if_fail (layout >= GTK_BUTTONBOX_DEFAULT_STYLE && layout <= GTK_BUTTONBOX_END); default_layout_style = layout; } /* get default value for spacing */ gint gtk_hbutton_box_get_spacing_default (void) { return default_spacing; } /* get default value for layout style */ GtkButtonBoxStyle gtk_hbutton_box_get_layout_default (void) { return default_layout_style; } static void gtk_hbutton_box_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkBox *box; GtkButtonBox *bbox; gint nvis_children; gint child_width; gint child_height; gint spacing; GtkButtonBoxStyle layout; g_return_if_fail (widget != NULL); g_return_if_fail (GTK_IS_HBUTTON_BOX (widget)); g_return_if_fail (requisition != NULL); box = GTK_BOX (widget); bbox = GTK_BUTTON_BOX (widget); spacing = bbox->spacing != GTK_BUTTONBOX_DEFAULT ? bbox->spacing : default_spacing; layout = bbox->layout_style != GTK_BUTTONBOX_DEFAULT_STYLE ? bbox->layout_style : default_layout_style; gtk_button_box_child_requisition (widget, &nvis_children, &child_width, &child_height); if (nvis_children == 0) { requisition->width = 0; requisition->height = 0; } else { switch (layout) { case GTK_BUTTONBOX_SPREAD: requisition->width = nvis_children*child_width + ((nvis_children+1)*spacing); break; case GTK_BUTTONBOX_EDGE: case GTK_BUTTONBOX_START: case GTK_BUTTONBOX_END: requisition->width = nvis_children*child_width + ((nvis_children-1)*spacing); break; default: g_assert_not_reached(); break; } requisition->height = child_height; } requisition->width += GTK_CONTAINER (box)->border_width * 2; requisition->height += GTK_CONTAINER (box)->border_width * 2; } static void gtk_hbutton_box_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkButtonBox *box; GtkHButtonBox *hbox; GtkBoxChild *child; GList *children; GtkAllocation child_allocation; gint nvis_children; gint child_width; gint child_height; gint x = 0; gint y = 0; gint width; gint childspace; gint childspacing = 0; GtkButtonBoxStyle layout; gint spacing; g_return_if_fail (widget != NULL); g_return_if_fail (GTK_IS_HBUTTON_BOX (widget)); g_return_if_fail (allocation != NULL); box = GTK_BUTTON_BOX (widget); hbox = GTK_HBUTTON_BOX (widget); spacing = box->spacing != GTK_BUTTONBOX_DEFAULT ? box->spacing : default_spacing; layout = box->layout_style != GTK_BUTTONBOX_DEFAULT_STYLE ? box->layout_style : default_layout_style; gtk_button_box_child_requisition (widget, &nvis_children, &child_width, &child_height); widget->allocation = *allocation; width = allocation->width - GTK_CONTAINER (box)->border_width*2; switch (layout) { case GTK_BUTTONBOX_SPREAD: childspacing = (width - (nvis_children*child_width)) / (nvis_children+1); x = allocation->x + GTK_CONTAINER (box)->border_width + childspacing; break; case GTK_BUTTONBOX_EDGE: if (nvis_children >= 2) { childspacing = (width - (nvis_children*child_width)) / (nvis_children-1); x = allocation->x + GTK_CONTAINER (box)->border_width; } else { /* one or zero children, just center */ childspacing = width; x = allocation->x + (allocation->width - child_width) / 2; } break; case GTK_BUTTONBOX_START: childspacing = spacing; x = allocation->x + GTK_CONTAINER (box)->border_width; break; case GTK_BUTTONBOX_END: childspacing = spacing; x = allocation->x + allocation->width - child_width * nvis_children - spacing *(nvis_children-1) - GTK_CONTAINER (box)->border_width; break; default: g_assert_not_reached(); break; } y = allocation->y + (allocation->height - child_height) / 2; childspace = child_width + childspacing; children = GTK_BOX (box)->children; while (children) { child = children->data; children = children->next; if (GTK_WIDGET_VISIBLE (child->widget)) { child_allocation.width = child_width; child_allocation.height = child_height; child_allocation.x = x; child_allocation.y = y; gtk_widget_size_allocate (child->widget, &child_allocation); x += childspace; } } }