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 void
  41 psppire_vbutton_box_get_preferred_height (GtkWidget *widget,
  42                                 gint      *minimal_height,
  43                                 gint      *natural_height)
  44 {
  45   GtkRequisition requisition;
  46
  47   gtk_vbutton_box_size_request (widget, &requisition);
  48
  49   *minimal_height = *natural_height = requisition.height;
  50 }
  51
  52
  53 static void
  54 psppire_vbutton_box_get_preferred_width (GtkWidget *widget,
  55                                 gint      *minimal_width,
  56                                 gint      *natural_width)
  57 {
  58   GtkRequisition requisition;
  59
  60   gtk_vbutton_box_size_request (widget, &requisition);
  61
  62   *minimal_width = *natural_width = requisition.width;
  63 }
  64
  65
  66 GType
  67 psppire_vbutton_box_get_type (void)
  68 {
  69   static GType vbuttonbox_type = 0;
  70
  71   if (!vbuttonbox_type)
  72     {
  73       static const GTypeInfo vbuttonbox_info =
  74       {
  75         sizeof (PsppireVButtonBoxClass),
  76         NULL, /* base_init */
  77         NULL, /* base_finalize */
  78         (GClassInitFunc) psppire_vbuttonbox_class_init,
  79         NULL, /* class_finalize */
  80         NULL, /* class_data */
  81         sizeof (PsppireVButtonBox),
  82         0,
  83         (GInstanceInitFunc) psppire_vbuttonbox_init,
  84       };
  85
  86       vbuttonbox_type = g_type_register_static (PSPPIRE_BUTTONBOX_TYPE,
  87                                             "PsppireVButtonBox", &vbuttonbox_info, 0);
  88     }
  89
  90   return vbuttonbox_type;
  91 }
  92
  93 static void
  94 psppire_vbuttonbox_class_init (PsppireVButtonBoxClass *class)
  95 {
  96   GtkWidgetClass *widget_class;
  97
  98   widget_class = (GtkWidgetClass*) class;
  99
 100   widget_class->get_preferred_width = psppire_vbutton_box_get_preferred_width;
 101   widget_class->get_preferred_height = psppire_vbutton_box_get_preferred_height;
 102   widget_class->size_allocate = gtk_vbutton_box_size_allocate;
 103 }
 104
 105
 106 static void
 107 psppire_vbuttonbox_init (PsppireVButtonBox *vbuttonbox)
 108 {
 109 }
 110
 111
 112 GtkWidget*
 113 psppire_vbuttonbox_new (void)
 114 {
 115   PsppireVButtonBox *vbuttonbox ;
 116
 117   vbuttonbox = g_object_new (psppire_vbutton_box_get_type (), NULL);
 118
 119   return GTK_WIDGET (vbuttonbox) ;
 120 }
 121
 122
 123
 124 /* The following two functions are lifted verbatim from
 125    the Gtk2.10.6 library */
 126
 127 static void
 128 gtk_vbutton_box_size_request (GtkWidget      *widget,
 129                               GtkRequisition *requisition)
 130 {
 131   GtkBox *box;
 132   GtkButtonBox *bbox;
 133   gint nvis_children;
 134   gint child_width;
 135   gint child_height;
 136   gint spacing;
 137   GtkButtonBoxStyle layout;
 138
 139   box = GTK_BOX (widget);
 140   bbox = GTK_BUTTON_BOX (widget);
 141
 142   spacing = gtk_box_get_spacing (box);
 143   layout = gtk_button_box_get_layout (bbox);
 144
 145   _psppire_button_box_child_requisition (widget,
 146                                          &nvis_children,
 147                                          NULL,
 148                                          &child_width,
 149                                          &child_height);
 150
 151   if (nvis_children == 0)
 152     {
 153       requisition->width = 0;
 154       requisition->height = 0;
 155     }
 156   else
 157     {
 158       switch (layout)
 159       {
 160       case GTK_BUTTONBOX_SPREAD:
 161         requisition->height =
 162                 nvis_children*child_height + ((nvis_children+1)*spacing);
 163         break;
 164       case GTK_BUTTONBOX_EDGE:
 165       case GTK_BUTTONBOX_START:
 166       case GTK_BUTTONBOX_END:
 167       default:
 168         requisition->height =
 169                 nvis_children*child_height + ((nvis_children-1)*spacing);
 170         break;
 171       }
 172       requisition->width = child_width;
 173     }
 174
 175   requisition->width += gtk_container_get_border_width (GTK_CONTAINER (box)) * 2;
 176   requisition->height += gtk_container_get_border_width (GTK_CONTAINER (box)) * 2;
 177 }
 178
 179
 180
 181 static void
 182 gtk_vbutton_box_size_allocate (GtkWidget     *widget,
 183                                GtkAllocation *allocation)
 184 {
 185   GtkBox *base_box;
 186   GtkButtonBox *box;
 187   GList *children;
 188   GtkAllocation child_allocation;
 189   gint nvis_children;
 190   gint n_secondaries;
 191   gint child_width;
 192   gint child_height;
 193   gint x = 0;
 194   gint y = 0;
 195   gint secondary_y = 0;
 196   gint height;
 197   gint childspace;
 198   gint childspacing = 0;
 199   GtkButtonBoxStyle layout;
 200   gint spacing;
 201
 202   base_box = GTK_BOX (widget);
 203   box = GTK_BUTTON_BOX (widget);
 204   spacing = gtk_box_get_spacing (base_box);
 205   layout = gtk_button_box_get_layout (box) ;
 206   _psppire_button_box_child_requisition (widget,
 207                                      &nvis_children,
 208                                      &n_secondaries,
 209                                      &child_width,
 210                                      &child_height);
 211   gtk_widget_set_allocation (widget, allocation);
 212   height = allocation->height - gtk_container_get_border_width (GTK_CONTAINER (box))*2;
 213   switch (layout)
 214   {
 215   case GTK_BUTTONBOX_SPREAD:
 216     childspacing = (height - (nvis_children * child_height)) / (nvis_children + 1);
 217     y = allocation->y + gtk_container_get_border_width (GTK_CONTAINER (box)) + childspacing;
 218     secondary_y = y + ((nvis_children - n_secondaries) * (child_height + childspacing));
 219     break;
 220   case GTK_BUTTONBOX_EDGE:
 221   default:
 222     if (nvis_children >= 2)
 223       {
 224         childspacing = (height - (nvis_children*child_height)) / (nvis_children-1);
 225         y = allocation->y + gtk_container_get_border_width (GTK_CONTAINER (box));
 226         secondary_y = y + ((nvis_children - n_secondaries) * (child_height + childspacing));
 227       }
 228     else
 229       {
 230         /* one or zero children, just center */
 231         childspacing = height;
 232         y = secondary_y = allocation->y + (allocation->height - child_height) / 2;
 233       }
 234     break;
 235   case GTK_BUTTONBOX_START:
 236     childspacing = spacing;
 237     y = allocation->y + gtk_container_get_border_width (GTK_CONTAINER (box));
 238     secondary_y = allocation->y + allocation->height
 239       - child_height * n_secondaries
 240       - spacing * (n_secondaries - 1)
 241       - gtk_container_get_border_width (GTK_CONTAINER (box));
 242     break;
 243   case GTK_BUTTONBOX_END:
 244     childspacing = spacing;
 245     y = allocation->y + allocation->height
 246       - child_height * (nvis_children - n_secondaries)
 247       - spacing * (nvis_children - n_secondaries - 1)
 248       - gtk_container_get_border_width (GTK_CONTAINER (box));
 249     secondary_y = allocation->y + gtk_container_get_border_width (GTK_CONTAINER (box));
 250     break;
 251   }
 252
 253   x = allocation->x + (allocation->width - child_width) / 2;
 254   childspace = child_height + childspacing;
 255
 256   children = gtk_container_get_children (GTK_CONTAINER (box));
 257   while (children)
 258     {
 259       GtkWidget *child = children->data;
 260       children = children->next;
 261
 262       if (gtk_widget_get_visible (child))
 263         {
 264           gboolean is_secondary = FALSE;
 265           gtk_container_child_get (GTK_CONTAINER (box), child, "secondary", &is_secondary, NULL);
 266
 267           child_allocation.width = child_width;
 268           child_allocation.height = child_height;
 269           child_allocation.x = x;
 270
 271           if (is_secondary)
 272             {
 273               child_allocation.y = secondary_y;
 274               secondary_y += childspace;
 275             }
 276           else
 277             {
 278               child_allocation.y = y;
 279               y += childspace;
 280             }
 281
 282           gtk_widget_size_allocate (child, &child_allocation);
 283         }
 284     }
 285 }
 286