Pileus Git - ~andy/gtk/blob - gtk/gtkpaned.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 Library 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  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library 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 #include "gtkpaned.h"
  20
  21
  22 static void gtk_paned_class_init (GtkPanedClass    *klass);
  23 static void gtk_paned_init       (GtkPaned         *paned);
  24 static void gtk_paned_realize    (GtkWidget *widget);
  25 static void gtk_paned_map        (GtkWidget      *widget);
  26 static void gtk_paned_unmap      (GtkWidget      *widget);
  27 static void gtk_paned_unrealize  (GtkWidget *widget);
  28 static gint gtk_paned_expose     (GtkWidget      *widget,
  29                                   GdkEventExpose *event);
  30 static void gtk_paned_add        (GtkContainer   *container,
  31                                   GtkWidget      *widget);
  32 static void gtk_paned_remove     (GtkContainer   *container,
  33                                   GtkWidget      *widget);
  34 static void gtk_paned_forall     (GtkContainer   *container,
  35                                   gboolean        include_internals,
  36                                   GtkCallback     callback,
  37                                   gpointer        callback_data);
  38 static GtkType gtk_paned_child_type (GtkContainer *container);
  39
  40
  41 static GtkContainerClass *parent_class = NULL;
  42
  43
  44 GtkType
  45 gtk_paned_get_type (void)
  46 {
  47   static GtkType paned_type = 0;
  48
  49   if (!paned_type)
  50     {
  51       GtkTypeInfo paned_info =
  52       {
  53         "GtkPaned",
  54         sizeof (GtkPaned),
  55         sizeof (GtkPanedClass),
  56         (GtkClassInitFunc) gtk_paned_class_init,
  57         (GtkObjectInitFunc) gtk_paned_init,
  58         /* reserved_1 */ NULL,
  59         /* reserved_2 */ NULL,
  60         (GtkClassInitFunc) NULL,
  61       };
  62
  63       paned_type = gtk_type_unique (GTK_TYPE_CONTAINER, &paned_info);
  64     }
  65
  66   return paned_type;
  67 }
  68
  69 static void
  70 gtk_paned_class_init (GtkPanedClass *class)
  71 {
  72   GtkObjectClass *object_class;
  73   GtkWidgetClass *widget_class;
  74   GtkContainerClass *container_class;
  75
  76   object_class = (GtkObjectClass*) class;
  77   widget_class = (GtkWidgetClass*) class;
  78   container_class = (GtkContainerClass*) class;
  79
  80   parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
  81
  82   widget_class->realize = gtk_paned_realize;
  83   widget_class->map = gtk_paned_map;
  84   widget_class->unmap = gtk_paned_unmap;
  85   widget_class->unrealize = gtk_paned_unrealize;
  86   widget_class->expose_event = gtk_paned_expose;
  87
  88   container_class->add = gtk_paned_add;
  89   container_class->remove = gtk_paned_remove;
  90   container_class->forall = gtk_paned_forall;
  91   container_class->child_type = gtk_paned_child_type;
  92 }
  93
  94 static GtkType
  95 gtk_paned_child_type (GtkContainer *container)
  96 {
  97   if (!GTK_PANED (container)->child1 || !GTK_PANED (container)->child2)
  98     return GTK_TYPE_WIDGET;
  99   else
 100     return GTK_TYPE_NONE;
 101 }
 102
 103 static void
 104 gtk_paned_init (GtkPaned *paned)
 105 {
 106   GTK_WIDGET_UNSET_FLAGS (paned, GTK_NO_WINDOW);
 107
 108   paned->child1 = NULL;
 109   paned->child2 = NULL;
 110   paned->handle = NULL;
 111   paned->xor_gc = NULL;
 112
 113   paned->handle_size = 10;
 114   paned->gutter_size = 6;
 115   paned->position_set = FALSE;
 116   paned->in_drag = FALSE;
 117
 118   paned->handle_xpos = -1;
 119   paned->handle_ypos = -1;
 120 }
 121
 122
 123 static void
 124 gtk_paned_realize (GtkWidget *widget)
 125 {
 126   GtkPaned *paned;
 127   GdkWindowAttr attributes;
 128   gint attributes_mask;
 129
 130   g_return_if_fail (widget != NULL);
 131   g_return_if_fail (GTK_IS_PANED (widget));
 132
 133   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 134   paned = GTK_PANED (widget);
 135
 136   attributes.x = widget->allocation.x;
 137   attributes.y = widget->allocation.y;
 138   attributes.width = widget->allocation.width;
 139   attributes.height = widget->allocation.height;
 140   attributes.window_type = GDK_WINDOW_CHILD;
 141   attributes.wclass = GDK_INPUT_OUTPUT;
 142   attributes.visual = gtk_widget_get_visual (widget);
 143   attributes.colormap = gtk_widget_get_colormap (widget);
 144   attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
 145   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 146
 147   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 148                                    &attributes, attributes_mask);
 149   gdk_window_set_user_data (widget->window, paned);
 150
 151   attributes.x = paned->handle_xpos;
 152   attributes.y = paned->handle_ypos;
 153   attributes.width = paned->handle_size;
 154   attributes.height = paned->handle_size;
 155   attributes.cursor = paned->cursor = gdk_cursor_new (GDK_CROSS);
 156   attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
 157                             GDK_BUTTON_RELEASE_MASK |
 158                             GDK_POINTER_MOTION_MASK |
 159                             GDK_POINTER_MOTION_HINT_MASK);
 160   attributes_mask |= GDK_WA_CURSOR;
 161
 162   paned->handle = gdk_window_new (widget->window,
 163                                   &attributes, attributes_mask);
 164   gdk_window_set_user_data (paned->handle, paned);
 165
 166   widget->style = gtk_style_attach (widget->style, widget->window);
 167
 168   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 169   gtk_style_set_background (widget->style, paned->handle, GTK_STATE_NORMAL);
 170
 171   gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 172
 173   gdk_window_show (paned->handle);
 174 }
 175
 176 static void
 177 gtk_paned_map (GtkWidget *widget)
 178 {
 179   GtkPaned *paned;
 180
 181   g_return_if_fail (widget != NULL);
 182   g_return_if_fail (GTK_IS_PANED (widget));
 183
 184   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 185   paned = GTK_PANED (widget);
 186
 187   gdk_window_show (widget->window);
 188
 189   if (paned->child1 &&
 190       GTK_WIDGET_VISIBLE (paned->child1) &&
 191       !GTK_WIDGET_MAPPED (paned->child1))
 192     gtk_widget_map (paned->child1);
 193   if (paned->child2 &&
 194       GTK_WIDGET_VISIBLE (paned->child2) &&
 195       !GTK_WIDGET_MAPPED (paned->child2))
 196     gtk_widget_map (paned->child2);
 197 }
 198
 199 static void
 200 gtk_paned_unmap (GtkWidget *widget)
 201 {
 202   g_return_if_fail (widget != NULL);
 203   g_return_if_fail (GTK_IS_PANED (widget));
 204
 205   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 206
 207   gdk_window_hide (widget->window);
 208 }
 209
 210 static void
 211 gtk_paned_unrealize (GtkWidget *widget)
 212 {
 213   GtkPaned *paned;
 214
 215   g_return_if_fail (widget != NULL);
 216   g_return_if_fail (GTK_IS_PANED (widget));
 217
 218   paned = GTK_PANED (widget);
 219
 220   if (paned->xor_gc)
 221     {
 222       gdk_gc_destroy (paned->xor_gc);
 223       paned->xor_gc = NULL;
 224     }
 225
 226   if (paned->handle)
 227     {
 228       gdk_window_set_user_data (paned->handle, NULL);
 229       gdk_window_destroy (paned->handle);
 230       paned->handle = NULL;
 231       gdk_cursor_destroy (paned->cursor);
 232       paned->cursor = NULL;
 233     }
 234
 235   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 236     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 237 }
 238
 239 static gint
 240 gtk_paned_expose (GtkWidget      *widget,
 241                   GdkEventExpose *event)
 242 {
 243   GtkPaned *paned;
 244   GdkEventExpose child_event;
 245
 246   g_return_val_if_fail (widget != NULL, FALSE);
 247   g_return_val_if_fail (GTK_IS_PANED (widget), FALSE);
 248   g_return_val_if_fail (event != NULL, FALSE);
 249
 250   if (GTK_WIDGET_DRAWABLE (widget))
 251     {
 252       paned = GTK_PANED (widget);
 253
 254       /* An expose event for the handle */
 255       if (event->window == paned->handle)
 256         {
 257            gtk_paint_box (widget->style, paned->handle,
 258                           GTK_WIDGET_STATE(widget),
 259                           GTK_SHADOW_OUT,
 260                           &event->area, widget, "paned",
 261                           0, 0,
 262                           paned->handle_size, paned->handle_size);
 263         }
 264       else
 265         {
 266           child_event = *event;
 267           if (paned->child1 &&
 268               GTK_WIDGET_NO_WINDOW (paned->child1) &&
 269               gtk_widget_intersect (paned->child1, &event->area, &child_event.area))
 270             gtk_widget_event (paned->child1, (GdkEvent*) &child_event);
 271
 272           if (paned->child2 &&
 273               GTK_WIDGET_NO_WINDOW (paned->child2) &&
 274               gtk_widget_intersect (paned->child2, &event->area, &child_event.area))
 275             gtk_widget_event (paned->child2, (GdkEvent*) &child_event);
 276
 277           /* redraw the groove if necessary */
 278           if (gdk_rectangle_intersect (&paned->groove_rectangle,
 279                                        &event->area,
 280                                        &child_event.area))
 281             gtk_widget_draw (widget, &child_event.area);
 282         }
 283     }
 284   return FALSE;
 285 }
 286
 287 void
 288 gtk_paned_add1 (GtkPaned     *paned,
 289                 GtkWidget    *widget)
 290 {
 291   g_return_if_fail (widget != NULL);
 292
 293   if (!paned->child1)
 294     {
 295       gtk_widget_set_parent (widget, GTK_WIDGET (paned));
 296
 297       if (GTK_WIDGET_VISIBLE (widget->parent))
 298         {
 299           if (GTK_WIDGET_REALIZED (widget->parent) &&
 300               !GTK_WIDGET_REALIZED (widget))
 301             gtk_widget_realize (widget);
 302
 303           if (GTK_WIDGET_MAPPED (widget->parent) &&
 304               !GTK_WIDGET_MAPPED (widget))
 305             gtk_widget_map (widget);
 306         }
 307
 308       paned->child1 = widget;
 309
 310       if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (paned))
 311         gtk_widget_queue_resize (widget);
 312     }
 313 }
 314
 315 void
 316 gtk_paned_add2 (GtkPaned  *paned,
 317                 GtkWidget *widget)
 318 {
 319   g_return_if_fail (widget != NULL);
 320
 321   if (!paned->child2)
 322     {
 323       gtk_widget_set_parent (widget, GTK_WIDGET (paned));
 324
 325       if (GTK_WIDGET_VISIBLE (widget->parent))
 326         {
 327           if (GTK_WIDGET_REALIZED (widget->parent) &&
 328               !GTK_WIDGET_REALIZED (widget))
 329             gtk_widget_realize (widget);
 330
 331           if (GTK_WIDGET_MAPPED (widget->parent) &&
 332               !GTK_WIDGET_MAPPED (widget))
 333             gtk_widget_map (widget);
 334         }
 335
 336       paned->child2 = widget;
 337
 338       if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (paned))
 339         gtk_widget_queue_resize (widget);
 340     }
 341 }
 342
 343 static void
 344 gtk_paned_add (GtkContainer *container,
 345                GtkWidget    *widget)
 346 {
 347   GtkPaned *paned;
 348
 349   g_return_if_fail (container != NULL);
 350   g_return_if_fail (GTK_IS_PANED (container));
 351   g_return_if_fail (widget != NULL);
 352
 353   paned = GTK_PANED (container);
 354
 355   if (!paned->child1)
 356     gtk_paned_add1 (GTK_PANED (container),widget);
 357   else if (!paned->child2)
 358     gtk_paned_add2 (GTK_PANED (container),widget);
 359 }
 360
 361 static void
 362 gtk_paned_remove (GtkContainer *container,
 363                   GtkWidget    *widget)
 364 {
 365   GtkPaned *paned;
 366   gboolean was_visible;
 367
 368   g_return_if_fail (container != NULL);
 369   g_return_if_fail (GTK_IS_PANED (container));
 370   g_return_if_fail (widget != NULL);
 371
 372   paned = GTK_PANED (container);
 373   was_visible = GTK_WIDGET_VISIBLE (widget);
 374
 375   if (paned->child1 == widget)
 376     {
 377       gtk_widget_unparent (widget);
 378
 379       paned->child1 = NULL;
 380
 381       if (was_visible && GTK_WIDGET_VISIBLE (container))
 382         gtk_widget_queue_resize (GTK_WIDGET (container));
 383     }
 384   else if (paned->child2 == widget)
 385     {
 386       gtk_widget_unparent (widget);
 387
 388       paned->child2 = NULL;
 389
 390       if (was_visible && GTK_WIDGET_VISIBLE (container))
 391         gtk_widget_queue_resize (GTK_WIDGET (container));
 392     }
 393 }
 394
 395 static void
 396 gtk_paned_forall (GtkContainer *container,
 397                   gboolean      include_internals,
 398                   GtkCallback   callback,
 399                   gpointer      callback_data)
 400 {
 401   GtkPaned *paned;
 402
 403   g_return_if_fail (container != NULL);
 404   g_return_if_fail (GTK_IS_PANED (container));
 405   g_return_if_fail (callback != NULL);
 406
 407   paned = GTK_PANED (container);
 408
 409   if (paned->child1)
 410     (* callback) (paned->child1, callback_data);
 411   if (paned->child2)
 412     (* callback) (paned->child2, callback_data);
 413 }
 414
 415 void
 416 gtk_paned_handle_size (GtkPaned *paned,
 417                        guint16   size)
 418 {
 419   gint x,y;
 420
 421   g_return_if_fail (paned != NULL);
 422   g_return_if_fail (GTK_IS_PANED (paned));
 423
 424   if (paned->handle)
 425     {
 426       gdk_window_get_geometry (paned->handle, &x, &y, NULL, NULL, NULL);
 427       gdk_window_move_resize (paned->handle,
 428                               x + paned->handle_size / 2 - size / 2,
 429                               y + paned->handle_size / 2 - size / 2,
 430                               size, size);
 431     }
 432   paned->handle_size = size;
 433 }
 434
 435 void
 436 gtk_paned_gutter_size (GtkPaned *paned,
 437                        guint16   size)
 438 {
 439   g_return_if_fail (paned != NULL);
 440   g_return_if_fail (GTK_IS_PANED (paned));
 441
 442   paned->gutter_size = size;
 443
 444   if (GTK_WIDGET_VISIBLE (GTK_WIDGET (paned)))
 445     gtk_widget_queue_resize (GTK_WIDGET (paned));
 446 }