pintos-os.org Git - pspp/blob - src/ui/gui/psppire-hbuttonbox.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-hbuttonbox.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_hbuttonbox_class_init          (PsppireHButtonBoxClass *);
  32 static void psppire_hbuttonbox_init                (PsppireHButtonBox      *);
  33
  34 static void gtk_hbutton_box_size_request  (GtkWidget      *widget,
  35                                            GtkRequisition *requisition);
  36 static void gtk_hbutton_box_size_allocate (GtkWidget      *widget,
  37                                            GtkAllocation  *allocation);
  38
  39
  40
  41 GType
  42 psppire_hbutton_box_get_type (void)
  43 {
  44   static GType hbuttonbox_type = 0;
  45
  46   if (!hbuttonbox_type)
  47     {
  48       static const GTypeInfo hbuttonbox_info =
  49       {
  50         sizeof (PsppireHButtonBoxClass),
  51         NULL, /* base_init */
  52         NULL, /* base_finalize */
  53         (GClassInitFunc) psppire_hbuttonbox_class_init,
  54         NULL, /* class_finalize */
  55         NULL, /* class_data */
  56         sizeof (PsppireHButtonBox),
  57         0,
  58         (GInstanceInitFunc) psppire_hbuttonbox_init,
  59       };
  60
  61       hbuttonbox_type = g_type_register_static (PSPPIRE_BUTTONBOX_TYPE,
  62                                             "PsppireHButtonBox", &hbuttonbox_info, 0);
  63     }
  64
  65   return hbuttonbox_type;
  66 }
  67
  68 static void
  69 psppire_hbuttonbox_class_init (PsppireHButtonBoxClass *class)
  70 {
  71   GtkWidgetClass *widget_class;
  72
  73   widget_class = (GtkWidgetClass*) class;
  74
  75   widget_class->size_request = gtk_hbutton_box_size_request;
  76   widget_class->size_allocate = gtk_hbutton_box_size_allocate;
  77 }
  78
  79
  80 static void
  81 psppire_hbuttonbox_init (PsppireHButtonBox *hbuttonbox)
  82 {
  83 }
  84
  85
  86 GtkWidget*
  87 psppire_hbuttonbox_new (void)
  88 {
  89   PsppireHButtonBox *hbuttonbox ;
  90
  91   hbuttonbox = g_object_new (psppire_hbutton_box_get_type (), NULL);
  92
  93   return GTK_WIDGET (hbuttonbox) ;
  94 }
  95
  96
  97
  98 /* The following two functions are lifted verbatim from
  99    the Gtk2.10.6 library */
 100
 101 static void
 102 gtk_hbutton_box_size_request (GtkWidget      *widget,
 103                               GtkRequisition *requisition)
 104 {
 105   GtkBox *box;
 106   GtkButtonBox *bbox;
 107   gint nvis_children;
 108   gint child_width;
 109   gint child_height;
 110   gint spacing;
 111   GtkButtonBoxStyle layout;
 112
 113   box = GTK_BOX (widget);
 114   bbox = GTK_BUTTON_BOX (widget);
 115
 116   spacing = gtk_box_get_spacing (box);
 117   layout = gtk_button_box_get_layout (bbox) ;
 118
 119   _psppire_button_box_child_requisition (widget,
 120                                      &nvis_children,
 121                                      NULL,
 122                                      &child_width,
 123                                      &child_height);
 124
 125   if (nvis_children == 0)
 126   {
 127     requisition->width = 0;
 128     requisition->height = 0;
 129   }
 130   else
 131   {
 132     switch (layout)
 133     {
 134     case GTK_BUTTONBOX_SPREAD:
 135       requisition->width =
 136               nvis_children*child_width + ((nvis_children+1)*spacing);
 137       break;
 138     default:
 139     case GTK_BUTTONBOX_EDGE:
 140     case GTK_BUTTONBOX_START:
 141     case GTK_BUTTONBOX_END:
 142       requisition->width = nvis_children*child_width + ((nvis_children-1)*spacing);
 143       break;
 144     }
 145
 146     requisition->height = child_height;
 147   }
 148
 149   requisition->width += gtk_container_get_border_width (GTK_CONTAINER (box)) * 2;
 150   requisition->height += gtk_container_get_border_width (GTK_CONTAINER (box)) * 2;
 151 }
 152
 153
 154
 155 static void
 156 gtk_hbutton_box_size_allocate (GtkWidget     *widget,
 157                                GtkAllocation *allocation)
 158 {
 159   GtkBox *base_box;
 160   GtkButtonBox *box;
 161   GList *children;
 162   GtkAllocation child_allocation;
 163   gint nvis_children;
 164   gint n_secondaries;
 165   gint child_width;
 166   gint child_height;
 167   gint x = 0;
 168   gint secondary_x = 0;
 169   gint y = 0;
 170   gint width;
 171   gint childspace;
 172   gint childspacing = 0;
 173   GtkButtonBoxStyle layout;
 174   gint spacing;
 175
 176   base_box = GTK_BOX (widget);
 177   box = GTK_BUTTON_BOX (widget);
 178   spacing = gtk_box_get_spacing (base_box);
 179   layout = gtk_button_box_get_layout (box) ;
 180   _psppire_button_box_child_requisition (widget,
 181                                      &nvis_children,
 182                                      &n_secondaries,
 183                                      &child_width,
 184                                      &child_height);
 185   gtk_widget_set_allocation (widget, allocation);
 186   width = allocation->width - gtk_container_get_border_width (GTK_CONTAINER (box))*2;
 187   switch (layout)
 188   {
 189   case GTK_BUTTONBOX_SPREAD:
 190     childspacing = (width - (nvis_children * child_width)) / (nvis_children + 1);
 191     x = allocation->x + gtk_container_get_border_width (GTK_CONTAINER (box)) + childspacing;
 192     secondary_x = x + ((nvis_children - n_secondaries) * (child_width + childspacing));
 193     break;
 194   default:
 195   case GTK_BUTTONBOX_EDGE:
 196     if (nvis_children >= 2)
 197       {
 198         childspacing = (width - (nvis_children * child_width)) / (nvis_children - 1);
 199         x = allocation->x + gtk_container_get_border_width (GTK_CONTAINER (box));
 200         secondary_x = x + ((nvis_children - n_secondaries) * (child_width + childspacing));
 201       }
 202     else
 203       {
 204         /* one or zero children, just center */
 205         childspacing = width;
 206         x = secondary_x = allocation->x + (allocation->width - child_width) / 2;
 207       }
 208     break;
 209   case GTK_BUTTONBOX_START:
 210     childspacing = spacing;
 211     x = allocation->x + gtk_container_get_border_width (GTK_CONTAINER (box));
 212     secondary_x = allocation->x + allocation->width
 213       - child_width * n_secondaries
 214       - spacing * (n_secondaries - 1)
 215       - gtk_container_get_border_width (GTK_CONTAINER (box));
 216     break;
 217   case GTK_BUTTONBOX_END:
 218     childspacing = spacing;
 219     x = allocation->x + allocation->width
 220       - child_width * (nvis_children - n_secondaries)
 221       - spacing * (nvis_children - n_secondaries - 1)
 222       - gtk_container_get_border_width (GTK_CONTAINER (box));
 223     secondary_x = allocation->x + gtk_container_get_border_width (GTK_CONTAINER (box));
 224     break;
 225   }
 226
 227
 228   y = allocation->y + (allocation->height - child_height) / 2;
 229   childspace = child_width + childspacing;
 230
 231   children = gtk_container_get_children (GTK_CONTAINER (box));
 232
 233   while (children)
 234     {
 235       GtkWidget *child = children->data;
 236       children = children->next;
 237
 238       if (gtk_widget_get_visible (child))
 239         {
 240           gboolean is_secondary = FALSE;
 241           gtk_container_child_get (GTK_CONTAINER (box), child, "secondary", &is_secondary, NULL);
 242
 243
 244           child_allocation.width = child_width;
 245           child_allocation.height = child_height;
 246           child_allocation.y = y;
 247
 248           if (is_secondary)
 249             {
 250               child_allocation.x = secondary_x;
 251               secondary_x += childspace;
 252             }
 253           else
 254             {
 255               child_allocation.x = x;
 256               x += childspace;
 257             }
 258
 259           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 260             child_allocation.x = (allocation->x + allocation->width) - (child_allocation.x + child_width - allocation->x);
 261
 262           gtk_widget_size_allocate (child, &child_allocation);
 263         }
 264     }
 265 }