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 GType
  41 psppire_vbutton_box_get_type (void)
  42 {
  43   static GType vbuttonbox_type = 0;
  44
  45   if (!vbuttonbox_type)
  46     {
  47       static const GTypeInfo vbuttonbox_info =
  48       {
  49         sizeof (PsppireVButtonBoxClass),
  50         NULL, /* base_init */
  51         NULL, /* base_finalize */
  52         (GClassInitFunc) psppire_vbuttonbox_class_init,
  53         NULL, /* class_finalize */
  54         NULL, /* class_data */
  55         sizeof (PsppireVButtonBox),
  56         0,
  57         (GInstanceInitFunc) psppire_vbuttonbox_init,
  58       };
  59
  60       vbuttonbox_type = g_type_register_static (PSPPIRE_BUTTONBOX_TYPE,
  61                                             "PsppireVButtonBox", &vbuttonbox_info, 0);
  62     }
  63
  64   return vbuttonbox_type;
  65 }
  66
  67 static void
  68 psppire_vbuttonbox_class_init (PsppireVButtonBoxClass *class)
  69 {
  70   GtkWidgetClass *widget_class;
  71
  72   widget_class = (GtkWidgetClass*) class;
  73
  74   widget_class->size_request = gtk_vbutton_box_size_request;
  75   widget_class->size_allocate = gtk_vbutton_box_size_allocate;
  76 }
  77
  78
  79 static void
  80 psppire_vbuttonbox_init (PsppireVButtonBox *vbuttonbox)
  81 {
  82 }
  83
  84
  85 GtkWidget*
  86 psppire_vbuttonbox_new (void)
  87 {
  88   PsppireVButtonBox *vbuttonbox ;
  89
  90   vbuttonbox = g_object_new (psppire_vbutton_box_get_type (), NULL);
  91
  92   return GTK_WIDGET (vbuttonbox) ;
  93 }
  94
  95
  96
  97 /* The following two functions are lifted verbatim from
  98    the Gtk2.10.6 library */
  99
 100 static void
 101 gtk_vbutton_box_size_request (GtkWidget      *widget,
 102                               GtkRequisition *requisition)
 103 {
 104   GtkBox *box;
 105   GtkButtonBox *bbox;
 106   gint nvis_children;
 107   gint child_width;
 108   gint child_height;
 109   gint spacing;
 110   GtkButtonBoxStyle layout;
 111
 112   box = GTK_BOX (widget);
 113   bbox = GTK_BUTTON_BOX (widget);
 114
 115   spacing = gtk_box_get_spacing (box);
 116   layout = gtk_button_box_get_layout (bbox);
 117
 118   _psppire_button_box_child_requisition (widget,
 119                                          &nvis_children,
 120                                          NULL,
 121                                          &child_width,
 122                                          &child_height);
 123
 124   if (nvis_children == 0)
 125     {
 126       requisition->width = 0;
 127       requisition->height = 0;
 128     }
 129   else
 130     {
 131       switch (layout)
 132       {
 133       case GTK_BUTTONBOX_SPREAD:
 134         requisition->height =
 135                 nvis_children*child_height + ((nvis_children+1)*spacing);
 136         break;
 137       case GTK_BUTTONBOX_EDGE:
 138       case GTK_BUTTONBOX_START:
 139       case GTK_BUTTONBOX_END:
 140       default:
 141         requisition->height =
 142                 nvis_children*child_height + ((nvis_children-1)*spacing);
 143         break;
 144       }
 145       requisition->width = child_width;
 146     }
 147
 148   requisition->width += gtk_container_get_border_width (GTK_CONTAINER (box)) * 2;
 149   requisition->height += gtk_container_get_border_width (GTK_CONTAINER (box)) * 2;
 150 }
 151
 152
 153
 154 static void
 155 gtk_vbutton_box_size_allocate (GtkWidget     *widget,
 156                                GtkAllocation *allocation)
 157 {
 158   GtkBox *base_box;
 159   GtkButtonBox *box;
 160   GList *children;
 161   GtkAllocation child_allocation;
 162   gint nvis_children;
 163   gint n_secondaries;
 164   gint child_width;
 165   gint child_height;
 166   gint x = 0;
 167   gint y = 0;
 168   gint secondary_y = 0;
 169   gint height;
 170   gint childspace;
 171   gint childspacing = 0;
 172   GtkButtonBoxStyle layout;
 173   gint spacing;
 174
 175   base_box = GTK_BOX (widget);
 176   box = GTK_BUTTON_BOX (widget);
 177   spacing = gtk_box_get_spacing (base_box);
 178   layout = gtk_button_box_get_layout (box) ;
 179   _psppire_button_box_child_requisition (widget,
 180                                      &nvis_children,
 181                                      &n_secondaries,
 182                                      &child_width,
 183                                      &child_height);
 184   gtk_widget_set_allocation (widget, allocation);
 185   height = allocation->height - gtk_container_get_border_width (GTK_CONTAINER (box))*2;
 186   switch (layout)
 187   {
 188   case GTK_BUTTONBOX_SPREAD:
 189     childspacing = (height - (nvis_children * child_height)) / (nvis_children + 1);
 190     y = allocation->y + gtk_container_get_border_width (GTK_CONTAINER (box)) + childspacing;
 191     secondary_y = y + ((nvis_children - n_secondaries) * (child_height + childspacing));
 192     break;
 193   case GTK_BUTTONBOX_EDGE:
 194   default:
 195     if (nvis_children >= 2)
 196       {
 197         childspacing = (height - (nvis_children*child_height)) / (nvis_children-1);
 198         y = allocation->y + gtk_container_get_border_width (GTK_CONTAINER (box));
 199         secondary_y = y + ((nvis_children - n_secondaries) * (child_height + childspacing));
 200       }
 201     else
 202       {
 203         /* one or zero children, just center */
 204         childspacing = height;
 205         y = secondary_y = allocation->y + (allocation->height - child_height) / 2;
 206       }
 207     break;
 208   case GTK_BUTTONBOX_START:
 209     childspacing = spacing;
 210     y = allocation->y + gtk_container_get_border_width (GTK_CONTAINER (box));
 211     secondary_y = allocation->y + allocation->height
 212       - child_height * n_secondaries
 213       - spacing * (n_secondaries - 1)
 214       - gtk_container_get_border_width (GTK_CONTAINER (box));
 215     break;
 216   case GTK_BUTTONBOX_END:
 217     childspacing = spacing;
 218     y = allocation->y + allocation->height
 219       - child_height * (nvis_children - n_secondaries)
 220       - spacing * (nvis_children - n_secondaries - 1)
 221       - gtk_container_get_border_width (GTK_CONTAINER (box));
 222     secondary_y = allocation->y + gtk_container_get_border_width (GTK_CONTAINER (box));
 223     break;
 224   }
 225
 226   x = allocation->x + (allocation->width - child_width) / 2;
 227   childspace = child_height + childspacing;
 228
 229   children = gtk_container_get_children (GTK_CONTAINER (box));
 230   while (children)
 231     {
 232       GtkWidget *child = children->data;
 233       children = children->next;
 234
 235       if (gtk_widget_get_visible (child))
 236         {
 237           gboolean is_secondary = FALSE;
 238           gtk_container_child_get (GTK_CONTAINER (box), child, "secondary", &is_secondary, NULL);
 239
 240           child_allocation.width = child_width;
 241           child_allocation.height = child_height;
 242           child_allocation.x = x;
 243
 244           if (is_secondary)
 245             {
 246               child_allocation.y = secondary_y;
 247               secondary_y += childspace;
 248             }
 249           else
 250             {
 251               child_allocation.y = y;
 252               y += childspace;
 253             }
 254
 255           gtk_widget_size_allocate (child, &child_allocation);
 256         }
 257     }
 258 }
 259