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 = GTK_PANED (hpaned);
  54
  55   paned->cursor_type = GDK_SB_H_DOUBLE_ARROW;
  56   paned->orientation = GTK_ORIENTATION_VERTICAL;
  57 }
  58
  59 GtkWidget *
  60 gtk_hpaned_new (void)
  61 {
  62   GtkHPaned *hpaned;
  63
  64   hpaned = g_object_new (GTK_TYPE_HPANED, NULL);
  65
  66   return GTK_WIDGET (hpaned);
  67 }
  68
  69 static void
  70 gtk_hpaned_size_request (GtkWidget      *widget,
  71                          GtkRequisition *requisition)
  72 {
  73   GtkPaned *paned = GTK_PANED (widget);
  74   GtkRequisition child_requisition;
  75
  76   requisition->width = 0;
  77   requisition->height = 0;
  78
  79   if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
  80     {
  81       gtk_widget_size_request (paned->child1, &child_requisition);
  82
  83       requisition->height = child_requisition.height;
  84       requisition->width = child_requisition.width;
  85     }
  86
  87   if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
  88     {
  89       gtk_widget_size_request (paned->child2, &child_requisition);
  90
  91       requisition->height = MAX(requisition->height, child_requisition.height);
  92       requisition->width += child_requisition.width;
  93     }
  94
  95   requisition->width += GTK_CONTAINER (paned)->border_width * 2;
  96   requisition->height += GTK_CONTAINER (paned)->border_width * 2;
  97
  98   if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
  99       paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 100     {
 101       gint handle_size;
 102
 103       gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
 104       requisition->width += handle_size;
 105     }
 106 }
 107
 108 static void
 109 flip_child (GtkWidget *widget, GtkAllocation *child_pos)
 110 {
 111   gint x = widget->allocation.x;
 112   gint width = widget->allocation.width;
 113
 114   child_pos->x = 2 * x + width - child_pos->x - child_pos->width;
 115 }
 116
 117 static void
 118 gtk_hpaned_size_allocate (GtkWidget     *widget,
 119                           GtkAllocation *allocation)
 120 {
 121   GtkPaned *paned = GTK_PANED (widget);
 122   gint border_width = GTK_CONTAINER (paned)->border_width;
 123
 124   widget->allocation = *allocation;
 125
 126   if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
 127       paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 128     {
 129       GtkAllocation child1_allocation;
 130       GtkAllocation child2_allocation;
 131       GtkRequisition child1_requisition;
 132       GtkRequisition child2_requisition;
 133       GdkRectangle old_handle_pos;
 134       gint handle_size;
 135
 136       gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
 137
 138       gtk_widget_get_child_requisition (paned->child1, &child1_requisition);
 139       gtk_widget_get_child_requisition (paned->child2, &child2_requisition);
 140
 141       gtk_paned_compute_position (paned,
 142                                   MAX (1, widget->allocation.width
 143                                        - handle_size
 144                                        - 2 * border_width),
 145                                   child1_requisition.width,
 146                                   child2_requisition.width);
 147
 148       old_handle_pos = paned->handle_pos;
 149
 150       paned->handle_pos.x = widget->allocation.x + paned->child1_size + border_width;
 151       paned->handle_pos.y = widget->allocation.y + border_width;
 152       paned->handle_pos.width = handle_size;
 153       paned->handle_pos.height = MAX (1, widget->allocation.height - 2 * border_width);
 154
 155       child1_allocation.height = child2_allocation.height = MAX (1, (gint) allocation->height - border_width * 2);
 156       child1_allocation.width = MAX (1, paned->child1_size);
 157       child1_allocation.x = widget->allocation.x + border_width;
 158       child1_allocation.y = child2_allocation.y = widget->allocation.y + border_width;
 159
 160       child2_allocation.x = child1_allocation.x + paned->child1_size + paned->handle_pos.width;
 161       child2_allocation.width = MAX (1, widget->allocation.x + widget->allocation.width - child2_allocation.x - border_width);
 162
 163       if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
 164         {
 165           flip_child (widget, &(child2_allocation));
 166           flip_child (widget, &(child1_allocation));
 167           flip_child (widget, &(paned->handle_pos));
 168         }
 169
 170       if (GTK_WIDGET_MAPPED (widget) &&
 171           (old_handle_pos.x != paned->handle_pos.x || old_handle_pos.y != paned->handle_pos.y ||
 172            old_handle_pos.width != paned->handle_pos.width || old_handle_pos.height != paned->handle_pos.height))
 173         {
 174           gdk_window_invalidate_rect (widget->window, &old_handle_pos, FALSE);
 175           gdk_window_invalidate_rect (widget->window, &paned->handle_pos, FALSE);
 176         }
 177
 178       if (GTK_WIDGET_REALIZED (widget))
 179         {
 180           if (GTK_WIDGET_MAPPED (widget))
 181             gdk_window_show (paned->handle);
 182           gdk_window_move_resize (paned->handle,
 183                                   paned->handle_pos.x,
 184                                   paned->handle_pos.y,
 185                                   handle_size,
 186                                   paned->handle_pos.height);
 187         }
 188
 189       /* Now allocate the childen, making sure, when resizing not to
 190        * overlap the windows
 191        */
 192       if (GTK_WIDGET_MAPPED (widget) &&
 193           paned->child1->allocation.width < child1_allocation.width)
 194         {
 195           gtk_widget_size_allocate (paned->child2, &child2_allocation);
 196           gtk_widget_size_allocate (paned->child1, &child1_allocation);
 197         }
 198       else
 199         {
 200           gtk_widget_size_allocate (paned->child1, &child1_allocation);
 201           gtk_widget_size_allocate (paned->child2, &child2_allocation);
 202         }
 203     }
 204   else
 205     {
 206       GtkAllocation child_allocation;
 207
 208       if (GTK_WIDGET_REALIZED (widget))
 209         gdk_window_hide (paned->handle);
 210
 211       if (paned->child1)
 212         gtk_widget_set_child_visible (paned->child1, TRUE);
 213       if (paned->child2)
 214         gtk_widget_set_child_visible (paned->child2, TRUE);
 215
 216       child_allocation.x = widget->allocation.x + border_width;
 217       child_allocation.y = widget->allocation.y + border_width;
 218       child_allocation.width = MAX (1, allocation->width - 2 * border_width);
 219       child_allocation.height = MAX (1, allocation->height - 2 * border_width);
 220
 221       if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
 222         gtk_widget_size_allocate (paned->child1, &child_allocation);
 223       else if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
 224         gtk_widget_size_allocate (paned->child2, &child_allocation);
 225     }
 226 }
 227
 228 #define __GTK_HPANED_C__
 229 #include "gtkaliasdef.c"