Initial revision

1 files changed, 269 insertions, 0 deletions

diff --git a/gtk/gtkhbbox.c b/gtk/gtkhbbox.c
new file mode 100644
index 0000000000..9d86c010e0
--- /dev/null
+++ b/gtk/gtkhbbox.c
@@ -0,0 +1,269 @@
+/* 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 "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 ()
+{
+  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,
+	(GtkArgFunc) 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 ()
+{
+  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 (gint layout)
+{
+  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 */
+
+gint 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;
+  gint 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
+	  ? 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;
+  gint 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
+	  ? 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;
+	}
+    }
+}
+