Pileus Git - ~andy/gtk/blob - gtk/gtkhpaned.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 "gtkhpaned.h"
  29 #include "gtkintl.h"
  30 #include "gtkalias.h"
  31
  32 static void     gtk_hpaned_size_request   (GtkWidget      *widget,
  33                                            GtkRequisition *requisition);
  34 static void     gtk_hpaned_size_allocate  (GtkWidget      *widget,
  35                                            GtkAllocation  *allocation);
  36
  37 G_DEFINE_TYPE (GtkHPaned, gtk_hpaned, GTK_TYPE_PANED)
  38
  39 static void
  40 gtk_hpaned_class_init (GtkHPanedClass *class)
  41 {
  42   GtkWidgetClass *widget_class;
  43
  44   widget_class = (GtkWidgetClass *) class;
  45
  46   widget_class->size_request = gtk_hpaned_size_request;
  47   widget_class->size_allocate = gtk_hpaned_size_allocate;
  48 }
  49
  50 static void
  51 gtk_hpaned_init (GtkHPaned *hpaned)
  52 {
  53   GtkPaned *paned;
  54
  55   g_return_if_fail (GTK_IS_PANED (hpaned));
  56
  57   paned = GTK_PANED (hpaned);
  58
  59   paned->cursor_type = GDK_SB_H_DOUBLE_ARROW;
  60   paned->orientation = GTK_ORIENTATION_VERTICAL;
  61 }
  62
  63 GtkWidget *
  64 gtk_hpaned_new (void)
  65 {
  66   GtkHPaned *hpaned;
  67
  68   hpaned = g_object_new (GTK_TYPE_HPANED, NULL);
  69
  70   return GTK_WIDGET (hpaned);
  71 }
  72
  73 static void
  74 gtk_hpaned_size_request (GtkWidget      *widget,
  75                          GtkRequisition *requisition)
  76 {
  77   GtkPaned *paned = GTK_PANED (widget);
  78   GtkRequisition child_requisition;
  79
  80   requisition->width = 0;
  81   requisition->height = 0;
  82
  83   if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
  84     {
  85       gtk_widget_size_request (paned->child1, &child_requisition);
  86
  87       requisition->height = child_requisition.height;
  88       requisition->width = child_requisition.width;
  89     }
  90
  91   if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
  92     {
  93       gtk_widget_size_request (paned->child2, &child_requisition);
  94
  95       requisition->height = MAX(requisition->height, child_requisition.height);
  96       requisition->width += child_requisition.width;
  97     }
  98
  99   requisition->width += GTK_CONTAINER (paned)->border_width * 2;
 100   requisition->height += GTK_CONTAINER (paned)->border_width * 2;
 101
 102   if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
 103       paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 104     {
 105       gint handle_size;
 106
 107       gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
 108       requisition->width += handle_size;
 109     }
 110 }
 111
 112 static void
 113 flip_child (GtkWidget *widget, GtkAllocation *child_pos)
 114 {
 115   gint x = widget->allocation.x;
 116   gint width = widget->allocation.width;
 117
 118   child_pos->x = 2 * x + width - child_pos->x - child_pos->width;
 119 }
 120
 121 static void
 122 gtk_hpaned_size_allocate (GtkWidget     *widget,
 123                           GtkAllocation *allocation)
 124 {
 125   GtkPaned *paned = GTK_PANED (widget);
 126   gint border_width = GTK_CONTAINER (paned)->border_width;
 127
 128   widget->allocation = *allocation;
 129
 130   if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
 131       paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 132     {
 133       GtkAllocation child1_allocation;
 134       GtkAllocation child2_allocation;
 135       GtkRequisition child1_requisition;
 136       GtkRequisition child2_requisition;
 137       gint handle_size;
 138
 139       gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
 140
 141       gtk_widget_get_child_requisition (paned->child1, &child1_requisition);
 142       gtk_widget_get_child_requisition (paned->child2, &child2_requisition);
 143
 144       gtk_paned_compute_position (paned,
 145                                   MAX (1, widget->allocation.width
 146                                        - handle_size
 147                                        - 2 * border_width),
 148                                   child1_requisition.width,
 149                                   child2_requisition.width);
 150
 151       paned->handle_pos.x = widget->allocation.x + paned->child1_size + border_width;
 152       paned->handle_pos.y = widget->allocation.y + border_width;
 153       paned->handle_pos.width = handle_size;
 154       paned->handle_pos.height = MAX (1, widget->allocation.height - 2 * border_width);
 155
 156       child1_allocation.height = child2_allocation.height = MAX (1, (gint) allocation->height - border_width * 2);
 157       child1_allocation.width = MAX (1, paned->child1_size);
 158       child1_allocation.x = widget->allocation.x + border_width;
 159       child1_allocation.y = child2_allocation.y = widget->allocation.y + border_width;
 160
 161       child2_allocation.x = child1_allocation.x + paned->child1_size + paned->handle_pos.width;
 162       child2_allocation.width = MAX (1, widget->allocation.x + widget->allocation.width - child2_allocation.x - border_width);
 163
 164       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 165         {
 166           flip_child (widget, &(child2_allocation));
 167           flip_child (widget, &(child1_allocation));
 168           flip_child (widget, &(paned->handle_pos));
 169         }
 170
 171       if (GTK_WIDGET_REALIZED (widget))
 172         {
 173           if (GTK_WIDGET_MAPPED (widget))
 174             gdk_window_show (paned->handle);
 175           gdk_window_move_resize (paned->handle,
 176                                   paned->handle_pos.x,
 177                                   paned->handle_pos.y,
 178                                   handle_size,
 179                                   paned->handle_pos.height);
 180         }
 181
 182       /* Now allocate the childen, making sure, when resizing not to
 183        * overlap the windows
 184        */
 185       if (GTK_WIDGET_MAPPED (widget) &&
 186           paned->child1->allocation.width < child1_allocation.width)
 187         {
 188           gtk_widget_size_allocate (paned->child2, &child2_allocation);
 189           gtk_widget_size_allocate (paned->child1, &child1_allocation);
 190         }
 191       else
 192         {
 193           gtk_widget_size_allocate (paned->child1, &child1_allocation);
 194           gtk_widget_size_allocate (paned->child2, &child2_allocation);
 195         }
 196     }
 197   else
 198     {
 199       GtkAllocation child_allocation;
 200
 201       if (GTK_WIDGET_REALIZED (widget))
 202         gdk_window_hide (paned->handle);
 203
 204       if (paned->child1)
 205         gtk_widget_set_child_visible (paned->child1, TRUE);
 206       if (paned->child2)
 207         gtk_widget_set_child_visible (paned->child2, TRUE);
 208
 209       child_allocation.x = widget->allocation.x + border_width;
 210       child_allocation.y = widget->allocation.y + border_width;
 211       child_allocation.width = MAX (1, allocation->width - 2 * border_width);
 212       child_allocation.height = MAX (1, allocation->height - 2 * border_width);
 213
 214       if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
 215         gtk_widget_size_allocate (paned->child1, &child_allocation);
 216       else if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 217         gtk_widget_size_allocate (paned->child2, &child_allocation);
 218     }
 219 }
 220
 221 #define __GTK_HPANED_C__
 222 #include "gtkaliasdef.c"