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 static void
  41 psppire_hbutton_box_get_preferred_height (GtkWidget *widget,
  42                                 gint      *minimal_height,
  43                                 gint      *natural_height)
  44 {
  45   GtkRequisition requisition;
  46
  47   gtk_hbutton_box_size_request (widget, &requisition);
  48
  49   *minimal_height = *natural_height = requisition.height;
  50 }
  51
  52
  53 static void
  54 psppire_hbutton_box_get_preferred_width (GtkWidget *widget,
  55                                 gint      *minimal_width,
  56                                 gint      *natural_width)
  57 {
  58   GtkRequisition requisition;
  59
  60   gtk_hbutton_box_size_request (widget, &requisition);
  61
  62   *minimal_width = *natural_width = requisition.width;
  63 }
  64
  65
  66
  67
  68 GType
  69 psppire_hbutton_box_get_type (void)
  70 {
  71   static GType hbuttonbox_type = 0;
  72
  73   if (!hbuttonbox_type)
  74     {
  75       static const GTypeInfo hbuttonbox_info =
  76       {
  77         sizeof (PsppireHButtonBoxClass),
  78         NULL, /* base_init */
  79         NULL, /* base_finalize */
  80         (GClassInitFunc) psppire_hbuttonbox_class_init,
  81         NULL, /* class_finalize */
  82         NULL, /* class_data */
  83         sizeof (PsppireHButtonBox),
  84         0,
  85         (GInstanceInitFunc) psppire_hbuttonbox_init,
  86       };
  87
  88       hbuttonbox_type = g_type_register_static (PSPPIRE_BUTTONBOX_TYPE,
  89                                             "PsppireHButtonBox", &hbuttonbox_info, 0);
  90     }
  91
  92   return hbuttonbox_type;
  93 }
  94
  95 static void
  96 psppire_hbuttonbox_class_init (PsppireHButtonBoxClass *class)
  97 {
  98   GtkWidgetClass *widget_class;
  99
 100   widget_class = (GtkWidgetClass*) class;
 101
 102   widget_class->get_preferred_width = psppire_hbutton_box_get_preferred_width;
 103   widget_class->get_preferred_height = psppire_hbutton_box_get_preferred_height;
 104   widget_class->size_allocate = gtk_hbutton_box_size_allocate;
 105 }
 106
 107
 108 static void
 109 psppire_hbuttonbox_init (PsppireHButtonBox *hbuttonbox)
 110 {
 111 }
 112
 113
 114 GtkWidget*
 115 psppire_hbuttonbox_new (void)
 116 {
 117   PsppireHButtonBox *hbuttonbox ;
 118
 119   hbuttonbox = g_object_new (psppire_hbutton_box_get_type (), NULL);
 120
 121   return GTK_WIDGET (hbuttonbox) ;
 122 }
 123
 124
 125
 126 /* The following two functions are lifted verbatim from
 127    the Gtk2.10.6 library */
 128
 129 static void
 130 gtk_hbutton_box_size_request (GtkWidget      *widget,
 131                               GtkRequisition *requisition)
 132 {
 133   GtkBox *box;
 134   GtkButtonBox *bbox;
 135   gint nvis_children;
 136   gint child_width;
 137   gint child_height;
 138   gint spacing;
 139   GtkButtonBoxStyle layout;
 140
 141   box = GTK_BOX (widget);
 142   bbox = GTK_BUTTON_BOX (widget);
 143
 144   spacing = gtk_box_get_spacing (box);
 145   layout = gtk_button_box_get_layout (bbox) ;
 146
 147   _psppire_button_box_child_requisition (widget,
 148                                      &nvis_children,
 149                                      NULL,
 150                                      &child_width,
 151                                      &child_height);
 152
 153   if (nvis_children == 0)
 154   {
 155     requisition->width = 0;
 156     requisition->height = 0;
 157   }
 158   else
 159   {
 160     switch (layout)
 161     {
 162     case GTK_BUTTONBOX_SPREAD:
 163       requisition->width =
 164               nvis_children*child_width + ((nvis_children+1)*spacing);
 165       break;
 166     default:
 167     case GTK_BUTTONBOX_EDGE:
 168     case GTK_BUTTONBOX_START:
 169     case GTK_BUTTONBOX_END:
 170       requisition->width = nvis_children*child_width + ((nvis_children-1)*spacing);
 171       break;
 172     }
 173
 174     requisition->height = child_height;
 175   }
 176
 177   requisition->width += gtk_container_get_border_width (GTK_CONTAINER (box)) * 2;
 178   requisition->height += gtk_container_get_border_width (GTK_CONTAINER (box)) * 2;
 179 }
 180
 181
 182
 183 static void
 184 gtk_hbutton_box_size_allocate (GtkWidget     *widget,
 185                                GtkAllocation *allocation)
 186 {
 187   GtkBox *base_box;
 188   GtkButtonBox *box;
 189   GList *children;
 190   GtkAllocation child_allocation;
 191   gint nvis_children;
 192   gint n_secondaries;
 193   gint child_width;
 194   gint child_height;
 195   gint x = 0;
 196   gint secondary_x = 0;
 197   gint y = 0;
 198   gint width;
 199   gint childspace;
 200   gint childspacing = 0;
 201   GtkButtonBoxStyle layout;
 202   gint spacing;
 203
 204   base_box = GTK_BOX (widget);
 205   box = GTK_BUTTON_BOX (widget);
 206   spacing = gtk_box_get_spacing (base_box);
 207   layout = gtk_button_box_get_layout (box) ;
 208   _psppire_button_box_child_requisition (widget,
 209                                      &nvis_children,
 210                                      &n_secondaries,
 211                                      &child_width,
 212                                      &child_height);
 213   gtk_widget_set_allocation (widget, allocation);
 214   width = allocation->width - gtk_container_get_border_width (GTK_CONTAINER (box))*2;
 215   switch (layout)
 216   {
 217   case GTK_BUTTONBOX_SPREAD:
 218     childspacing = (width - (nvis_children * child_width)) / (nvis_children + 1);
 219     x = allocation->x + gtk_container_get_border_width (GTK_CONTAINER (box)) + childspacing;
 220     secondary_x = x + ((nvis_children - n_secondaries) * (child_width + childspacing));
 221     break;
 222   default:
 223   case GTK_BUTTONBOX_EDGE:
 224     if (nvis_children >= 2)
 225       {
 226         childspacing = (width - (nvis_children * child_width)) / (nvis_children - 1);
 227         x = allocation->x + gtk_container_get_border_width (GTK_CONTAINER (box));
 228         secondary_x = x + ((nvis_children - n_secondaries) * (child_width + childspacing));
 229       }
 230     else
 231       {
 232         /* one or zero children, just center */
 233         childspacing = width;
 234         x = secondary_x = allocation->x + (allocation->width - child_width) / 2;
 235       }
 236     break;
 237   case GTK_BUTTONBOX_START:
 238     childspacing = spacing;
 239     x = allocation->x + gtk_container_get_border_width (GTK_CONTAINER (box));
 240     secondary_x = allocation->x + allocation->width
 241       - child_width * n_secondaries
 242       - spacing * (n_secondaries - 1)
 243       - gtk_container_get_border_width (GTK_CONTAINER (box));
 244     break;
 245   case GTK_BUTTONBOX_END:
 246     childspacing = spacing;
 247     x = allocation->x + allocation->width
 248       - child_width * (nvis_children - n_secondaries)
 249       - spacing * (nvis_children - n_secondaries - 1)
 250       - gtk_container_get_border_width (GTK_CONTAINER (box));
 251     secondary_x = allocation->x + gtk_container_get_border_width (GTK_CONTAINER (box));
 252     break;
 253   }
 254
 255
 256   y = allocation->y + (allocation->height - child_height) / 2;
 257   childspace = child_width + childspacing;
 258
 259   children = gtk_container_get_children (GTK_CONTAINER (box));
 260
 261   while (children)
 262     {
 263       GtkWidget *child = children->data;
 264       children = children->next;
 265
 266       if (gtk_widget_get_visible (child))
 267         {
 268           gboolean is_secondary = FALSE;
 269           gtk_container_child_get (GTK_CONTAINER (box), child, "secondary", &is_secondary, NULL);
 270
 271
 272           child_allocation.width = child_width;
 273           child_allocation.height = child_height;
 274           child_allocation.y = y;
 275
 276           if (is_secondary)
 277             {
 278               child_allocation.x = secondary_x;
 279               secondary_x += childspace;
 280             }
 281           else
 282             {
 283               child_allocation.x = x;
 284               x += childspace;
 285             }
 286
 287           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 288             child_allocation.x = (allocation->x + allocation->width) - (child_allocation.x + child_width - allocation->x);
 289
 290           gtk_widget_size_allocate (child, &child_allocation);
 291         }
 292     }
 293 }