Pileus Git - ~andy/gtk/blob - gtk/gtkvpaned.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library 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 GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include <config.h>
  28 #include "gtkvpaned.h"
  29
  30 static void     gtk_vpaned_class_init     (GtkVPanedClass *klass);
  31 static void     gtk_vpaned_init           (GtkVPaned      *vpaned);
  32 static void     gtk_vpaned_size_request   (GtkWidget      *widget,
  33                                            GtkRequisition *requisition);
  34 static void     gtk_vpaned_size_allocate  (GtkWidget      *widget,
  35                                            GtkAllocation  *allocation);
  36
  37 static gpointer parent_class;
  38
  39 GType
  40 gtk_vpaned_get_type (void)
  41 {
  42   static GType vpaned_type = 0;
  43
  44   if (!vpaned_type)
  45     {
  46       static const GTypeInfo vpaned_info =
  47       {
  48         sizeof (GtkVPanedClass),
  49         NULL,           /* base_init */
  50         NULL,           /* base_finalize */
  51         (GClassInitFunc) gtk_vpaned_class_init,
  52         NULL,           /* class_finalize */
  53         NULL,           /* class_data */
  54         sizeof (GtkVPaned),
  55         0,              /* n_preallocs */
  56         (GInstanceInitFunc) gtk_vpaned_init,
  57       };
  58
  59       vpaned_type = g_type_register_static (GTK_TYPE_PANED, "GtkVPaned",
  60                                             &vpaned_info, 0);
  61     }
  62
  63   return vpaned_type;
  64 }
  65
  66 static void
  67 gtk_vpaned_class_init (GtkVPanedClass *class)
  68 {
  69   GtkWidgetClass *widget_class;
  70
  71   parent_class = g_type_class_peek_parent (class);
  72
  73   widget_class = (GtkWidgetClass *) class;
  74
  75   widget_class->size_request = gtk_vpaned_size_request;
  76   widget_class->size_allocate = gtk_vpaned_size_allocate;
  77 }
  78
  79 static void
  80 gtk_vpaned_init (GtkVPaned *vpaned)
  81 {
  82   GtkPaned *paned;
  83
  84   g_return_if_fail (GTK_IS_PANED (vpaned));
  85
  86   paned = GTK_PANED (vpaned);
  87
  88   paned->cursor_type = GDK_SB_V_DOUBLE_ARROW;
  89   paned->orientation = GTK_ORIENTATION_HORIZONTAL;
  90 }
  91
  92 GtkWidget *
  93 gtk_vpaned_new (void)
  94 {
  95   GtkVPaned *vpaned;
  96
  97   vpaned = g_object_new (GTK_TYPE_VPANED, NULL);
  98
  99   return GTK_WIDGET (vpaned);
 100 }
 101
 102 static void
 103 gtk_vpaned_size_request (GtkWidget      *widget,
 104                          GtkRequisition *requisition)
 105 {
 106   GtkPaned *paned = GTK_PANED (widget);
 107   GtkRequisition child_requisition;
 108
 109   requisition->width = 0;
 110   requisition->height = 0;
 111
 112   if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
 113     {
 114       gtk_widget_size_request (paned->child1, &child_requisition);
 115
 116       requisition->height = child_requisition.height;
 117       requisition->width = child_requisition.width;
 118     }
 119
 120   if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 121     {
 122       gtk_widget_size_request (paned->child2, &child_requisition);
 123
 124       requisition->width = MAX (requisition->width, child_requisition.width);
 125       requisition->height += child_requisition.height;
 126     }
 127
 128   requisition->height += GTK_CONTAINER (paned)->border_width * 2;
 129   requisition->width += GTK_CONTAINER (paned)->border_width * 2;
 130
 131   if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
 132       paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 133     {
 134       gint handle_size;
 135
 136       gtk_widget_style_get (widget, "handle_size", &handle_size, NULL);
 137       requisition->height += handle_size;
 138     }
 139 }
 140
 141 static void
 142 gtk_vpaned_size_allocate (GtkWidget     *widget,
 143                           GtkAllocation *allocation)
 144 {
 145   GtkPaned *paned = GTK_PANED (widget);
 146   gint border_width = GTK_CONTAINER (paned)->border_width;
 147
 148   widget->allocation = *allocation;
 149
 150   if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
 151       paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 152     {
 153       GtkRequisition child1_requisition;
 154       GtkRequisition child2_requisition;
 155       GtkAllocation child1_allocation;
 156       GtkAllocation child2_allocation;
 157       gint handle_size;
 158
 159       gtk_widget_style_get (widget, "handle_size", &handle_size, NULL);
 160
 161       gtk_widget_get_child_requisition (paned->child1, &child1_requisition);
 162       gtk_widget_get_child_requisition (paned->child2, &child2_requisition);
 163
 164       gtk_paned_compute_position (paned,
 165                                   MAX (1, widget->allocation.height
 166                                        - handle_size
 167                                        - 2 * border_width),
 168                                   child1_requisition.height,
 169                                   child2_requisition.height);
 170
 171       paned->handle_pos.x = widget->allocation.x + border_width;
 172       paned->handle_pos.y = widget->allocation.y + paned->child1_size + border_width;
 173       paned->handle_pos.width = MAX (1, (gint) widget->allocation.width - 2 * border_width);
 174       paned->handle_pos.height = handle_size;
 175
 176       if (GTK_WIDGET_REALIZED (widget))
 177         {
 178           if (GTK_WIDGET_MAPPED (widget))
 179             gdk_window_show (paned->handle);
 180           gdk_window_move_resize (paned->handle,
 181                                   paned->handle_pos.x,
 182                                   paned->handle_pos.y,
 183                                   paned->handle_pos.width,
 184                                   handle_size);
 185         }
 186
 187       child1_allocation.width = child2_allocation.width = MAX (1, (gint) allocation->width - border_width * 2);
 188       child1_allocation.height = MAX (1, paned->child1_size);
 189       child1_allocation.x = child2_allocation.x = widget->allocation.x + border_width;
 190       child1_allocation.y = widget->allocation.y + border_width;
 191
 192       child2_allocation.y = child1_allocation.y + paned->child1_size + paned->handle_pos.height;
 193       child2_allocation.height = MAX (1, widget->allocation.y + widget->allocation.height - child2_allocation.y - border_width);
 194
 195       /* Now allocate the childen, making sure, when resizing not to
 196        * overlap the windows
 197        */
 198       if (GTK_WIDGET_MAPPED (widget) &&
 199           paned->child1->allocation.height < child1_allocation.height)
 200         {
 201           gtk_widget_size_allocate (paned->child2, &child2_allocation);
 202           gtk_widget_size_allocate (paned->child1, &child1_allocation);
 203         }
 204       else
 205         {
 206           gtk_widget_size_allocate (paned->child1, &child1_allocation);
 207           gtk_widget_size_allocate (paned->child2, &child2_allocation);
 208         }
 209     }
 210   else
 211     {
 212       GtkAllocation child_allocation;
 213
 214       if (GTK_WIDGET_REALIZED (widget))
 215         gdk_window_hide (paned->handle);
 216
 217       if (paned->child1)
 218         gtk_widget_set_child_visible (paned->child1, TRUE);
 219       if (paned->child2)
 220         gtk_widget_set_child_visible (paned->child2, TRUE);
 221
 222       child_allocation.x = widget->allocation.x + border_width;
 223       child_allocation.y = widget->allocation.y + border_width;
 224       child_allocation.width = MAX (1, allocation->width - 2 * border_width);
 225       child_allocation.height = MAX (1, allocation->height - 2 * border_width);
 226
 227       if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
 228         gtk_widget_size_allocate (paned->child1, &child_allocation);
 229       else if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 230         gtk_widget_size_allocate (paned->child2, &child_allocation);
 231     }
 232 }