pintos-os.org Git - pspp/blob - src/ui/gui/psppire-vbuttonbox.c

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2007, 2010, 2011  Free Software Foundation
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  16
  17
  18 #include <config.h>
  19
  20 #include <glib.h>
  21 #include <gtk/gtk.h>
  22 #include "psppire-vbuttonbox.h"
  23 #include "psppire-dialog.h"
  24
  25 #include <gettext.h>
  26
  27 #define _(msgid) gettext (msgid)
  28 #define N_(msgid) msgid
  29
  30
  31 static void psppire_vbuttonbox_class_init          (PsppireVButtonBoxClass *);
  32 static void psppire_vbuttonbox_init                (PsppireVButtonBox      *);
  33
  34 static void gtk_vbutton_box_size_request  (GtkWidget      *widget,
  35                                            GtkRequisition *requisition);
  36 static void gtk_vbutton_box_size_allocate (GtkWidget      *widget,
  37                                            GtkAllocation  *allocation);
  38
  39
  40 static const GtkButtonBoxStyle default_layout_style = GTK_BUTTONBOX_EDGE;
  41
  42 GType
  43 psppire_vbutton_box_get_type (void)
  44 {
  45   static GType vbuttonbox_type = 0;
  46
  47   if (!vbuttonbox_type)
  48     {
  49       static const GTypeInfo vbuttonbox_info =
  50       {
  51         sizeof (PsppireVButtonBoxClass),
  52         NULL, /* base_init */
  53         NULL, /* base_finalize */
  54         (GClassInitFunc) psppire_vbuttonbox_class_init,
  55         NULL, /* class_finalize */
  56         NULL, /* class_data */
  57         sizeof (PsppireVButtonBox),
  58         0,
  59         (GInstanceInitFunc) psppire_vbuttonbox_init,
  60       };
  61
  62       vbuttonbox_type = g_type_register_static (PSPPIRE_BUTTONBOX_TYPE,
  63                                             "PsppireVButtonBox", &vbuttonbox_info, 0);
  64     }
  65
  66   return vbuttonbox_type;
  67 }
  68
  69 static void
  70 psppire_vbuttonbox_class_init (PsppireVButtonBoxClass *class)
  71 {
  72   GtkWidgetClass *widget_class;
  73
  74   widget_class = (GtkWidgetClass*) class;
  75
  76   widget_class->size_request = gtk_vbutton_box_size_request;
  77   widget_class->size_allocate = gtk_vbutton_box_size_allocate;
  78 }
  79
  80
  81 static void
  82 psppire_vbuttonbox_init (PsppireVButtonBox *vbuttonbox)
  83 {
  84 }
  85
  86
  87 GtkWidget*
  88 psppire_vbuttonbox_new (void)
  89 {
  90   PsppireVButtonBox *vbuttonbox ;
  91
  92   vbuttonbox = g_object_new (psppire_vbutton_box_get_type (), NULL);
  93
  94   return GTK_WIDGET (vbuttonbox) ;
  95 }
  96
  97
  98
  99 /* The following two functions are lifted verbatim from
 100    the Gtk2.10.6 library */
 101
 102 static void
 103 gtk_vbutton_box_size_request (GtkWidget      *widget,
 104                               GtkRequisition *requisition)
 105 {
 106   GtkBox *box;
 107   GtkButtonBox *bbox;
 108   gint nvis_children;
 109   gint child_width;
 110   gint child_height;
 111   gint spacing;
 112   GtkButtonBoxStyle layout;
 113
 114   box = GTK_BOX (widget);
 115   bbox = GTK_BUTTON_BOX (widget);
 116
 117   spacing = box->spacing;
 118   layout = bbox->layout_style != GTK_BUTTONBOX_DEFAULT_STYLE
 119           ? bbox->layout_style : default_layout_style;
 120
 121   _psppire_button_box_child_requisition (widget,
 122                                          &nvis_children,
 123                                          NULL,
 124                                          &child_width,
 125                                          &child_height);
 126
 127   if (nvis_children == 0)
 128     {
 129       requisition->width = 0;
 130       requisition->height = 0;
 131     }
 132   else
 133     {
 134       switch (layout)
 135       {
 136       case GTK_BUTTONBOX_SPREAD:
 137         requisition->height =
 138                 nvis_children*child_height + ((nvis_children+1)*spacing);
 139         break;
 140       case GTK_BUTTONBOX_EDGE:
 141       case GTK_BUTTONBOX_START:
 142       case GTK_BUTTONBOX_END:
 143         requisition->height =
 144                 nvis_children*child_height + ((nvis_children-1)*spacing);
 145         break;
 146       default:
 147             g_assert_not_reached();
 148             break;
 149       }
 150       requisition->width = child_width;
 151     }
 152
 153   requisition->width += GTK_CONTAINER (box)->border_width * 2;
 154   requisition->height += GTK_CONTAINER (box)->border_width * 2;
 155 }
 156
 157
 158
 159 static void
 160 gtk_vbutton_box_size_allocate (GtkWidget     *widget,
 161                                GtkAllocation *allocation)
 162 {
 163   GtkBox *base_box;
 164   GtkButtonBox *box;
 165   GList *children;
 166   GtkAllocation child_allocation;
 167   gint nvis_children;
 168   gint n_secondaries;
 169   gint child_width;
 170   gint child_height;
 171   gint x = 0;
 172   gint y = 0;
 173   gint secondary_y = 0;
 174   gint height;
 175   gint childspace;
 176   gint childspacing = 0;
 177   GtkButtonBoxStyle layout;
 178   gint spacing;
 179
 180   base_box = GTK_BOX (widget);
 181   box = GTK_BUTTON_BOX (widget);
 182   spacing = base_box->spacing;
 183   layout = box->layout_style != GTK_BUTTONBOX_DEFAULT_STYLE
 184           ? box->layout_style : default_layout_style;
 185   _psppire_button_box_child_requisition (widget,
 186                                      &nvis_children,
 187                                      &n_secondaries,
 188                                      &child_width,
 189                                      &child_height);
 190   widget->allocation = *allocation;
 191   height = allocation->height - GTK_CONTAINER (box)->border_width*2;
 192   switch (layout)
 193   {
 194   case GTK_BUTTONBOX_SPREAD:
 195     childspacing = (height - (nvis_children * child_height)) / (nvis_children + 1);
 196     y = allocation->y + GTK_CONTAINER (box)->border_width + childspacing;
 197     secondary_y = y + ((nvis_children - n_secondaries) * (child_height + childspacing));
 198     break;
 199   case GTK_BUTTONBOX_EDGE:
 200     if (nvis_children >= 2)
 201       {
 202         childspacing = (height - (nvis_children*child_height)) / (nvis_children-1);
 203         y = allocation->y + GTK_CONTAINER (box)->border_width;
 204         secondary_y = y + ((nvis_children - n_secondaries) * (child_height + childspacing));
 205       }
 206     else
 207       {
 208         /* one or zero children, just center */
 209         childspacing = height;
 210         y = secondary_y = allocation->y + (allocation->height - child_height) / 2;
 211       }
 212     break;
 213   case GTK_BUTTONBOX_START:
 214     childspacing = spacing;
 215     y = allocation->y + GTK_CONTAINER (box)->border_width;
 216     secondary_y = allocation->y + allocation->height
 217       - child_height * n_secondaries
 218       - spacing * (n_secondaries - 1)
 219       - GTK_CONTAINER (box)->border_width;
 220     break;
 221   case GTK_BUTTONBOX_END:
 222     childspacing = spacing;
 223     y = allocation->y + allocation->height
 224       - child_height * (nvis_children - n_secondaries)
 225       - spacing * (nvis_children - n_secondaries - 1)
 226       - GTK_CONTAINER (box)->border_width;
 227     secondary_y = allocation->y + GTK_CONTAINER (box)->border_width;
 228     break;
 229   default:
 230     g_assert_not_reached();
 231     break;
 232   }
 233
 234   x = allocation->x + (allocation->width - child_width) / 2;
 235   childspace = child_height + childspacing;
 236
 237   children = gtk_container_get_children (GTK_CONTAINER (box));
 238   while (children)
 239     {
 240       GtkWidget *child = children->data;
 241       children = children->next;
 242
 243       if (gtk_widget_get_visible (child))
 244         {
 245           gboolean is_secondary = FALSE;
 246           gtk_container_child_get (GTK_CONTAINER (box), child, "secondary", &is_secondary, NULL);
 247
 248           child_allocation.width = child_width;
 249           child_allocation.height = child_height;
 250           child_allocation.x = x;
 251
 252           if (is_secondary)
 253             {
 254               child_allocation.y = secondary_y;
 255               secondary_y += childspace;
 256             }
 257           else
 258             {
 259               child_allocation.y = y;
 260               y += childspace;
 261             }
 262
 263           gtk_widget_size_allocate (child, &child_allocation);
 264         }
 265     }
 266 }
 267