Pileus Git - ~andy/gtk/blob - gtk/gtktreeitem.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 #undef GTK_DISABLE_DEPRECATED
  28
  29 #include <config.h>
  30 #include "gtklabel.h"
  31 #include "gtkeventbox.h"
  32 #include "gtkpixmap.h"
  33 #include "gtkmain.h"
  34 #include "gtkmarshalers.h"
  35 #include "gtksignal.h"
  36 #define GTK_ENABLE_BROKEN
  37 #include "gtktree.h"
  38 #include "gtktreeitem.h"
  39 #include "gtkintl.h"
  40 #include "gtkalias.h"
  41
  42 #include "tree_plus.xpm"
  43 #include "tree_minus.xpm"
  44
  45 #define DEFAULT_DELTA 9
  46
  47 enum {
  48   COLLAPSE_TREE,
  49   EXPAND_TREE,
  50   LAST_SIGNAL
  51 };
  52
  53 typedef struct _GtkTreePixmaps GtkTreePixmaps;
  54
  55 struct _GtkTreePixmaps {
  56   gint refcount;
  57   GdkColormap *colormap;
  58
  59   GdkPixmap *pixmap_plus;
  60   GdkPixmap *pixmap_minus;
  61   GdkBitmap *mask_plus;
  62   GdkBitmap *mask_minus;
  63 };
  64
  65 static GList *pixmaps = NULL;
  66
  67 static void gtk_tree_item_class_init (GtkTreeItemClass *klass);
  68 static void gtk_tree_item_init       (GtkTreeItem      *tree_item);
  69 static void gtk_tree_item_realize       (GtkWidget        *widget);
  70 static void gtk_tree_item_size_request  (GtkWidget        *widget,
  71                                          GtkRequisition   *requisition);
  72 static void gtk_tree_item_size_allocate (GtkWidget        *widget,
  73                                          GtkAllocation    *allocation);
  74 static void gtk_tree_item_paint         (GtkWidget        *widget,
  75                                          GdkRectangle     *area);
  76 static gint gtk_tree_item_button_press  (GtkWidget        *widget,
  77                                          GdkEventButton   *event);
  78 static gint gtk_tree_item_expose        (GtkWidget        *widget,
  79                                          GdkEventExpose   *event);
  80 static void gtk_tree_item_forall        (GtkContainer    *container,
  81                                          gboolean         include_internals,
  82                                          GtkCallback      callback,
  83                                          gpointer         callback_data);
  84
  85 static void gtk_real_tree_item_select   (GtkItem          *item);
  86 static void gtk_real_tree_item_deselect (GtkItem          *item);
  87 static void gtk_real_tree_item_toggle   (GtkItem          *item);
  88 static void gtk_real_tree_item_expand   (GtkTreeItem      *item);
  89 static void gtk_real_tree_item_collapse (GtkTreeItem      *item);
  90 static void gtk_tree_item_destroy        (GtkObject *object);
  91 static gint gtk_tree_item_subtree_button_click (GtkWidget *widget);
  92 static void gtk_tree_item_subtree_button_changed_state (GtkWidget *widget);
  93
  94 static void gtk_tree_item_map(GtkWidget*);
  95 static void gtk_tree_item_unmap(GtkWidget*);
  96
  97 static void gtk_tree_item_add_pixmaps    (GtkTreeItem       *tree_item);
  98 static void gtk_tree_item_remove_pixmaps (GtkTreeItem       *tree_item);
  99
 100 static GtkItemClass *parent_class = NULL;
 101 static guint tree_item_signals[LAST_SIGNAL] = { 0 };
 102
 103 GtkType
 104 gtk_tree_item_get_type (void)
 105 {
 106   static GtkType tree_item_type = 0;
 107
 108   if (!tree_item_type)
 109     {
 110       static const GtkTypeInfo tree_item_info =
 111       {
 112         "GtkTreeItem",
 113         sizeof (GtkTreeItem),
 114         sizeof (GtkTreeItemClass),
 115         (GtkClassInitFunc) gtk_tree_item_class_init,
 116         (GtkObjectInitFunc) gtk_tree_item_init,
 117         /* reserved_1 */ NULL,
 118         /* reserved_2 */ NULL,
 119         (GtkClassInitFunc) NULL,
 120       };
 121
 122       I_("GtkTreeItem");
 123       tree_item_type = gtk_type_unique (gtk_item_get_type (), &tree_item_info);
 124     }
 125
 126   return tree_item_type;
 127 }
 128
 129 static void
 130 gtk_tree_item_class_init (GtkTreeItemClass *class)
 131 {
 132   GtkObjectClass *object_class;
 133   GtkWidgetClass *widget_class;
 134   GtkContainerClass *container_class;
 135   GtkItemClass *item_class;
 136
 137   parent_class = gtk_type_class (GTK_TYPE_ITEM);
 138
 139   object_class = (GtkObjectClass*) class;
 140   widget_class = (GtkWidgetClass*) class;
 141   item_class = (GtkItemClass*) class;
 142   container_class = (GtkContainerClass*) class;
 143
 144   object_class->destroy = gtk_tree_item_destroy;
 145
 146   widget_class->realize = gtk_tree_item_realize;
 147   widget_class->size_request = gtk_tree_item_size_request;
 148   widget_class->size_allocate = gtk_tree_item_size_allocate;
 149   widget_class->button_press_event = gtk_tree_item_button_press;
 150   widget_class->expose_event = gtk_tree_item_expose;
 151   widget_class->map = gtk_tree_item_map;
 152   widget_class->unmap = gtk_tree_item_unmap;
 153
 154   container_class->forall = gtk_tree_item_forall;
 155
 156   item_class->select = gtk_real_tree_item_select;
 157   item_class->deselect = gtk_real_tree_item_deselect;
 158   item_class->toggle = gtk_real_tree_item_toggle;
 159
 160   class->expand = gtk_real_tree_item_expand;
 161   class->collapse = gtk_real_tree_item_collapse;
 162
 163   tree_item_signals[EXPAND_TREE] =
 164     gtk_signal_new (I_("expand"),
 165                     GTK_RUN_FIRST,
 166                     GTK_CLASS_TYPE (object_class),
 167                     GTK_SIGNAL_OFFSET (GtkTreeItemClass, expand),
 168                     _gtk_marshal_VOID__VOID,
 169                     GTK_TYPE_NONE, 0);
 170   tree_item_signals[COLLAPSE_TREE] =
 171     gtk_signal_new (I_("collapse"),
 172                     GTK_RUN_FIRST,
 173                     GTK_CLASS_TYPE (object_class),
 174                     GTK_SIGNAL_OFFSET (GtkTreeItemClass, collapse),
 175                     _gtk_marshal_VOID__VOID,
 176                     GTK_TYPE_NONE, 0);
 177 }
 178
 179 /* callback for event box mouse event */
 180 static gint
 181 gtk_tree_item_subtree_button_click (GtkWidget *widget)
 182 {
 183   GtkTreeItem* item;
 184
 185   g_return_val_if_fail (GTK_IS_EVENT_BOX (widget), FALSE);
 186
 187   item = (GtkTreeItem*) gtk_object_get_user_data (GTK_OBJECT (widget));
 188   if (!GTK_WIDGET_IS_SENSITIVE (item))
 189     return FALSE;
 190
 191   if (item->expanded)
 192     gtk_tree_item_collapse (item);
 193   else
 194     gtk_tree_item_expand (item);
 195
 196   return TRUE;
 197 }
 198
 199 /* callback for event box state changed */
 200 static void
 201 gtk_tree_item_subtree_button_changed_state (GtkWidget *widget)
 202 {
 203   g_return_if_fail (GTK_IS_EVENT_BOX (widget));
 204
 205   if (GTK_WIDGET_VISIBLE (widget))
 206     {
 207
 208       if (widget->state == GTK_STATE_NORMAL)
 209         gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
 210       else
 211         gdk_window_set_background (widget->window, &widget->style->bg[widget->state]);
 212
 213       if (GTK_WIDGET_DRAWABLE (widget))
 214         gdk_window_clear_area (widget->window, 0, 0,
 215                                widget->allocation.width, widget->allocation.height);
 216     }
 217 }
 218
 219 static void
 220 gtk_tree_item_init (GtkTreeItem *tree_item)
 221 {
 222   GtkWidget *eventbox, *pixmapwid;
 223
 224   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 225
 226   tree_item->expanded = FALSE;
 227   tree_item->subtree = NULL;
 228   GTK_WIDGET_SET_FLAGS (tree_item, GTK_CAN_FOCUS);
 229
 230   /* create an event box containing one pixmaps */
 231   eventbox = gtk_event_box_new();
 232   gtk_widget_set_events (eventbox, GDK_BUTTON_PRESS_MASK);
 233   gtk_signal_connect(GTK_OBJECT(eventbox), "state_changed",
 234                      (GtkSignalFunc)gtk_tree_item_subtree_button_changed_state,
 235                      (gpointer)NULL);
 236   gtk_signal_connect(GTK_OBJECT(eventbox), "realize",
 237                      (GtkSignalFunc)gtk_tree_item_subtree_button_changed_state,
 238                      (gpointer)NULL);
 239   gtk_signal_connect(GTK_OBJECT(eventbox), "button_press_event",
 240                      (GtkSignalFunc)gtk_tree_item_subtree_button_click,
 241                      (gpointer)NULL);
 242   gtk_object_set_user_data(GTK_OBJECT(eventbox), tree_item);
 243   tree_item->pixmaps_box = eventbox;
 244
 245   /* create pixmap for button '+' */
 246   pixmapwid = gtk_type_new (gtk_pixmap_get_type ());
 247   if (!tree_item->expanded)
 248     gtk_container_add (GTK_CONTAINER (eventbox), pixmapwid);
 249   gtk_widget_show (pixmapwid);
 250   tree_item->plus_pix_widget = pixmapwid;
 251   g_object_ref_sink (tree_item->plus_pix_widget);
 252
 253   /* create pixmap for button '-' */
 254   pixmapwid = gtk_type_new (gtk_pixmap_get_type ());
 255   if (tree_item->expanded)
 256     gtk_container_add (GTK_CONTAINER (eventbox), pixmapwid);
 257   gtk_widget_show (pixmapwid);
 258   tree_item->minus_pix_widget = pixmapwid;
 259   g_object_ref_sink (tree_item->minus_pix_widget);
 260
 261   gtk_widget_set_parent (eventbox, GTK_WIDGET (tree_item));
 262 }
 263
 264
 265 GtkWidget*
 266 gtk_tree_item_new (void)
 267 {
 268   GtkWidget *tree_item;
 269
 270   tree_item = GTK_WIDGET (gtk_type_new (gtk_tree_item_get_type ()));
 271
 272   return tree_item;
 273 }
 274
 275 GtkWidget*
 276 gtk_tree_item_new_with_label (const gchar *label)
 277 {
 278   GtkWidget *tree_item;
 279   GtkWidget *label_widget;
 280
 281   tree_item = gtk_tree_item_new ();
 282   label_widget = gtk_label_new (label);
 283   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 284
 285   gtk_container_add (GTK_CONTAINER (tree_item), label_widget);
 286   gtk_widget_show (label_widget);
 287
 288
 289   return tree_item;
 290 }
 291
 292 void
 293 gtk_tree_item_set_subtree (GtkTreeItem *tree_item,
 294                            GtkWidget   *subtree)
 295 {
 296   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 297   g_return_if_fail (GTK_IS_TREE (subtree));
 298
 299   if (tree_item->subtree)
 300     {
 301       g_warning("there is already a subtree for this tree item\n");
 302       return;
 303     }
 304
 305   tree_item->subtree = subtree;
 306   GTK_TREE (subtree)->tree_owner = GTK_WIDGET (tree_item);
 307
 308   /* show subtree button */
 309   if (tree_item->pixmaps_box)
 310     gtk_widget_show (tree_item->pixmaps_box);
 311
 312   if (tree_item->expanded)
 313     gtk_widget_show (subtree);
 314   else
 315     gtk_widget_hide (subtree);
 316
 317   gtk_widget_set_parent (subtree, GTK_WIDGET (tree_item)->parent);
 318 }
 319
 320 void
 321 gtk_tree_item_select (GtkTreeItem *tree_item)
 322 {
 323   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 324
 325   gtk_item_select (GTK_ITEM (tree_item));
 326 }
 327
 328 void
 329 gtk_tree_item_deselect (GtkTreeItem *tree_item)
 330 {
 331   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 332
 333   gtk_item_deselect (GTK_ITEM (tree_item));
 334 }
 335
 336 void
 337 gtk_tree_item_expand (GtkTreeItem *tree_item)
 338 {
 339   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 340
 341   gtk_signal_emit (GTK_OBJECT (tree_item), tree_item_signals[EXPAND_TREE], NULL);
 342 }
 343
 344 void
 345 gtk_tree_item_collapse (GtkTreeItem *tree_item)
 346 {
 347   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 348
 349   gtk_signal_emit (GTK_OBJECT (tree_item), tree_item_signals[COLLAPSE_TREE], NULL);
 350 }
 351
 352 static void
 353 gtk_tree_item_add_pixmaps (GtkTreeItem *tree_item)
 354 {
 355   GList *tmp_list;
 356   GdkColormap *colormap;
 357   GtkTreePixmaps *pixmap_node = NULL;
 358
 359   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 360
 361   if (tree_item->pixmaps)
 362     return;
 363
 364   colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_item));
 365
 366   tmp_list = pixmaps;
 367   while (tmp_list)
 368     {
 369       pixmap_node = (GtkTreePixmaps *)tmp_list->data;
 370
 371       if (pixmap_node->colormap == colormap)
 372         break;
 373
 374       tmp_list = tmp_list->next;
 375     }
 376
 377   if (tmp_list)
 378     {
 379       pixmap_node->refcount++;
 380       tree_item->pixmaps = tmp_list;
 381     }
 382   else
 383     {
 384       pixmap_node = g_new (GtkTreePixmaps, 1);
 385
 386       pixmap_node->colormap = colormap;
 387       g_object_ref (colormap);
 388
 389       pixmap_node->refcount = 1;
 390
 391       /* create pixmaps for plus icon */
 392       pixmap_node->pixmap_plus =
 393         gdk_pixmap_create_from_xpm_d (GTK_WIDGET (tree_item)->window,
 394                                       &pixmap_node->mask_plus,
 395                                       NULL,
 396                                       (gchar **)tree_plus);
 397
 398       /* create pixmaps for minus icon */
 399       pixmap_node->pixmap_minus =
 400         gdk_pixmap_create_from_xpm_d (GTK_WIDGET (tree_item)->window,
 401                                       &pixmap_node->mask_minus,
 402                                       NULL,
 403                                       (gchar **)tree_minus);
 404
 405       tree_item->pixmaps = pixmaps = g_list_prepend (pixmaps, pixmap_node);
 406     }
 407
 408   gtk_pixmap_set (GTK_PIXMAP (tree_item->plus_pix_widget),
 409                   pixmap_node->pixmap_plus, pixmap_node->mask_plus);
 410   gtk_pixmap_set (GTK_PIXMAP (tree_item->minus_pix_widget),
 411                   pixmap_node->pixmap_minus, pixmap_node->mask_minus);
 412 }
 413
 414 static void
 415 gtk_tree_item_remove_pixmaps (GtkTreeItem *tree_item)
 416 {
 417   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 418
 419   if (tree_item->pixmaps)
 420     {
 421       GtkTreePixmaps *pixmap_node = (GtkTreePixmaps *)tree_item->pixmaps->data;
 422
 423       g_assert (pixmap_node->refcount > 0);
 424
 425       if (--pixmap_node->refcount == 0)
 426         {
 427           g_object_unref (pixmap_node->colormap);
 428           g_object_unref (pixmap_node->pixmap_plus);
 429           g_object_unref (pixmap_node->mask_plus);
 430           g_object_unref (pixmap_node->pixmap_minus);
 431           g_object_unref (pixmap_node->mask_minus);
 432
 433           pixmaps = g_list_remove_link (pixmaps, tree_item->pixmaps);
 434           g_list_free_1 (tree_item->pixmaps);
 435           g_free (pixmap_node);
 436         }
 437
 438       tree_item->pixmaps = NULL;
 439     }
 440 }
 441
 442 static void
 443 gtk_tree_item_realize (GtkWidget *widget)
 444 {
 445   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 446
 447   if (GTK_WIDGET_CLASS (parent_class)->realize)
 448     (* GTK_WIDGET_CLASS (parent_class)->realize) (widget);
 449
 450   gdk_window_set_background (widget->window,
 451                              &widget->style->base[GTK_STATE_NORMAL]);
 452
 453   gtk_tree_item_add_pixmaps (GTK_TREE_ITEM (widget));
 454 }
 455
 456 static void
 457 gtk_tree_item_size_request (GtkWidget      *widget,
 458                             GtkRequisition *requisition)
 459 {
 460   GtkBin *bin;
 461   GtkTreeItem* item;
 462   GtkRequisition child_requisition;
 463
 464   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 465   g_return_if_fail (requisition != NULL);
 466
 467   bin = GTK_BIN (widget);
 468   item = GTK_TREE_ITEM(widget);
 469
 470   requisition->width = (GTK_CONTAINER (widget)->border_width +
 471                         widget->style->xthickness) * 2;
 472   requisition->height = GTK_CONTAINER (widget)->border_width * 2;
 473
 474   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 475     {
 476       GtkRequisition pix_requisition;
 477
 478       gtk_widget_size_request (bin->child, &child_requisition);
 479
 480       requisition->width += child_requisition.width;
 481
 482       gtk_widget_size_request (item->pixmaps_box,
 483                                &pix_requisition);
 484       requisition->width += pix_requisition.width + DEFAULT_DELTA +
 485         GTK_TREE (widget->parent)->current_indent;
 486
 487       requisition->height += MAX (child_requisition.height,
 488                                   pix_requisition.height);
 489     }
 490 }
 491
 492 static void
 493 gtk_tree_item_size_allocate (GtkWidget     *widget,
 494                              GtkAllocation *allocation)
 495 {
 496   GtkBin *bin;
 497   GtkTreeItem* item;
 498   GtkAllocation child_allocation;
 499   gint border_width;
 500   int temp;
 501
 502   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 503   g_return_if_fail (allocation != NULL);
 504
 505   widget->allocation = *allocation;
 506   if (GTK_WIDGET_REALIZED (widget))
 507     gdk_window_move_resize (widget->window,
 508                             allocation->x, allocation->y,
 509                             allocation->width, allocation->height);
 510
 511   bin = GTK_BIN (widget);
 512   item = GTK_TREE_ITEM(widget);
 513
 514   if (bin->child)
 515     {
 516       border_width = (GTK_CONTAINER (widget)->border_width +
 517                       widget->style->xthickness);
 518
 519       child_allocation.x = border_width + GTK_TREE(widget->parent)->current_indent;
 520       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 521
 522       child_allocation.width = item->pixmaps_box->requisition.width;
 523       child_allocation.height = item->pixmaps_box->requisition.height;
 524
 525       temp = allocation->height - child_allocation.height;
 526       child_allocation.y += ( temp / 2 ) + ( temp % 2 );
 527
 528       gtk_widget_size_allocate (item->pixmaps_box, &child_allocation);
 529
 530       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 531       child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 532       child_allocation.x += item->pixmaps_box->requisition.width+DEFAULT_DELTA;
 533
 534       child_allocation.width =
 535         MAX (1, (gint)allocation->width - ((gint)child_allocation.x + border_width));
 536
 537       gtk_widget_size_allocate (bin->child, &child_allocation);
 538     }
 539 }
 540
 541 static void
 542 gtk_tree_item_draw_lines (GtkWidget *widget)
 543 {
 544   GtkTreeItem* item;
 545   GtkTree* tree;
 546   guint lx1, ly1, lx2, ly2;
 547   GdkGC* gc;
 548
 549   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 550
 551   item = GTK_TREE_ITEM(widget);
 552   tree = GTK_TREE(widget->parent);
 553
 554   if (!tree->view_line)
 555     return;
 556
 557   gc = widget->style->text_gc[GTK_STATE_NORMAL];
 558
 559   /* draw vertical line */
 560   lx1 = item->pixmaps_box->allocation.width;
 561   lx1 = lx2 = ((lx1 / 2) + (lx1 % 2) +
 562                GTK_CONTAINER (widget)->border_width + 1 + tree->current_indent);
 563   ly1 = 0;
 564   ly2 = widget->allocation.height;
 565
 566   if (g_list_last (tree->children)->data == widget)
 567     ly2 = (ly2 / 2) + (ly2 % 2);
 568
 569   if (tree != tree->root_tree)
 570     gdk_draw_line (widget->window, gc, lx1, ly1, lx2, ly2);
 571
 572   /* draw vertical line for subtree connecting */
 573   if(g_list_last(tree->children)->data != (gpointer)widget)
 574     ly2 = (ly2 / 2) + (ly2 % 2);
 575
 576   lx2 += DEFAULT_DELTA;
 577
 578   if (item->subtree && item->expanded)
 579     gdk_draw_line (widget->window, gc,
 580                    lx2, ly2, lx2, widget->allocation.height);
 581
 582   /* draw horizontal line */
 583   ly1 = ly2;
 584   lx2 += 2;
 585
 586   gdk_draw_line (widget->window, gc, lx1, ly1, lx2, ly2);
 587
 588   lx2 -= DEFAULT_DELTA+2;
 589   ly1 = 0;
 590   ly2 = widget->allocation.height;
 591
 592   if (tree != tree->root_tree)
 593     {
 594       item = GTK_TREE_ITEM (tree->tree_owner);
 595       tree = GTK_TREE (GTK_WIDGET (tree)->parent);
 596       while (tree != tree->root_tree)
 597         {
 598           lx1 = lx2 -= tree->indent_value;
 599
 600           if (g_list_last (tree->children)->data != item)
 601             gdk_draw_line (widget->window, gc, lx1, ly1, lx2, ly2);
 602           item = GTK_TREE_ITEM (tree->tree_owner);
 603           tree = GTK_TREE (GTK_WIDGET (tree)->parent);
 604         }
 605     }
 606 }
 607
 608 static void
 609 gtk_tree_item_paint (GtkWidget    *widget,
 610                      GdkRectangle *area)
 611 {
 612   GdkRectangle child_area, item_area;
 613   GtkTreeItem* tree_item;
 614
 615   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 616   g_return_if_fail (area != NULL);
 617
 618   /* FIXME: We should honor tree->view_mode, here - I think
 619    * the desired effect is that when the mode is VIEW_ITEM,
 620    * only the subitem is drawn as selected, not the entire
 621    * line. (Like the way that the tree in Windows Explorer
 622    * works).
 623    */
 624   if (GTK_WIDGET_DRAWABLE (widget))
 625     {
 626       tree_item = GTK_TREE_ITEM(widget);
 627
 628       if (widget->state == GTK_STATE_NORMAL)
 629         {
 630           gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 631           gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
 632         }
 633       else
 634         {
 635           if (!GTK_WIDGET_IS_SENSITIVE (widget))
 636             gtk_paint_flat_box(widget->style, widget->window,
 637                                widget->state, GTK_SHADOW_NONE,
 638                                area, widget, "treeitem",
 639                                0, 0, -1, -1);
 640           else
 641             gtk_paint_flat_box(widget->style, widget->window,
 642                                widget->state, GTK_SHADOW_ETCHED_OUT,
 643                                area, widget, "treeitem",
 644                                0, 0, -1, -1);
 645         }
 646
 647       /* draw left size of tree item */
 648       item_area.x = 0;
 649       item_area.y = 0;
 650       item_area.width = (tree_item->pixmaps_box->allocation.width + DEFAULT_DELTA +
 651                          GTK_TREE (widget->parent)->current_indent + 2);
 652       item_area.height = widget->allocation.height;
 653
 654
 655       if (gdk_rectangle_intersect(&item_area, area, &child_area))
 656         {
 657
 658           gtk_tree_item_draw_lines(widget);
 659
 660           if (tree_item->pixmaps_box &&
 661               GTK_WIDGET_VISIBLE(tree_item->pixmaps_box) &&
 662               gtk_widget_intersect (tree_item->pixmaps_box, area, &child_area))
 663             gtk_widget_draw (tree_item->pixmaps_box, &child_area);
 664         }
 665
 666       if (GTK_WIDGET_HAS_FOCUS (widget))
 667         gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 668                          NULL, widget, "treeitem",
 669                          0, 0,
 670                          widget->allocation.width,
 671                          widget->allocation.height);
 672
 673     }
 674 }
 675
 676 static gint
 677 gtk_tree_item_button_press (GtkWidget      *widget,
 678                             GdkEventButton *event)
 679 {
 680
 681   g_return_val_if_fail (GTK_IS_TREE_ITEM (widget), FALSE);
 682   g_return_val_if_fail (event != NULL, FALSE);
 683
 684   if (event->type == GDK_BUTTON_PRESS
 685         && GTK_WIDGET_IS_SENSITIVE(widget)
 686         && !GTK_WIDGET_HAS_FOCUS (widget))
 687       gtk_widget_grab_focus (widget);
 688
 689   return (event->type == GDK_BUTTON_PRESS && GTK_WIDGET_IS_SENSITIVE(widget));
 690 }
 691
 692 static void
 693 gtk_tree_item_expose_child (GtkWidget *child,
 694                             gpointer   client_data)
 695 {
 696   struct {
 697     GtkWidget *container;
 698     GdkEventExpose *event;
 699   } *data = client_data;
 700
 701   if (GTK_WIDGET_DRAWABLE (child) &&
 702       GTK_WIDGET_NO_WINDOW (child) &&
 703       (child->window == data->event->window))
 704     {
 705       GdkEvent *child_event = gdk_event_new (GDK_EXPOSE);
 706       child_event->expose = *data->event;
 707       g_object_ref (child_event->expose.window);
 708
 709       child_event->expose.region = gtk_widget_region_intersect (child,
 710                                                                 data->event->region);
 711       if (!gdk_region_empty (child_event->expose.region))
 712         {
 713           gdk_region_get_clipbox (child_event->expose.region, &child_event->expose.area);
 714           gtk_widget_send_expose (child, child_event);
 715         }
 716       gdk_event_free (child_event);
 717     }
 718 }
 719
 720 static gint
 721 gtk_tree_item_expose (GtkWidget      *widget,
 722                       GdkEventExpose *event)
 723 {
 724   struct {
 725     GtkWidget *container;
 726     GdkEventExpose *event;
 727   } data;
 728
 729   g_return_val_if_fail (GTK_IS_TREE_ITEM (widget), FALSE);
 730   g_return_val_if_fail (event != NULL, FALSE);
 731
 732   if (GTK_WIDGET_DRAWABLE (widget))
 733     {
 734       gtk_tree_item_paint (widget, &event->area);
 735
 736       data.container = widget;
 737       data.event = event;
 738
 739       gtk_container_forall (GTK_CONTAINER (widget),
 740                             gtk_tree_item_expose_child,
 741                             &data);
 742    }
 743
 744   return FALSE;
 745 }
 746
 747 static void
 748 gtk_real_tree_item_select (GtkItem *item)
 749 {
 750   GtkWidget *widget;
 751
 752   g_return_if_fail (GTK_IS_TREE_ITEM (item));
 753
 754   widget = GTK_WIDGET (item);
 755
 756   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 757
 758   if (!widget->parent || GTK_TREE (widget->parent)->view_mode == GTK_TREE_VIEW_LINE)
 759     gtk_widget_set_state (GTK_TREE_ITEM (item)->pixmaps_box, GTK_STATE_SELECTED);
 760 }
 761
 762 static void
 763 gtk_real_tree_item_deselect (GtkItem *item)
 764 {
 765   GtkTreeItem *tree_item;
 766   GtkWidget *widget;
 767
 768   g_return_if_fail (GTK_IS_TREE_ITEM (item));
 769
 770   tree_item = GTK_TREE_ITEM (item);
 771   widget = GTK_WIDGET (item);
 772
 773   gtk_widget_set_state (widget, GTK_STATE_NORMAL);
 774
 775   if (!widget->parent || GTK_TREE (widget->parent)->view_mode == GTK_TREE_VIEW_LINE)
 776     gtk_widget_set_state (tree_item->pixmaps_box, GTK_STATE_NORMAL);
 777 }
 778
 779 static void
 780 gtk_real_tree_item_toggle (GtkItem *item)
 781 {
 782   g_return_if_fail (GTK_IS_TREE_ITEM (item));
 783
 784   if(!GTK_WIDGET_IS_SENSITIVE(item))
 785     return;
 786
 787   if (GTK_WIDGET (item)->parent && GTK_IS_TREE (GTK_WIDGET (item)->parent))
 788     gtk_tree_select_child (GTK_TREE (GTK_WIDGET (item)->parent),
 789                            GTK_WIDGET (item));
 790   else
 791     {
 792       /* Should we really bother with this bit? A listitem not in a list?
 793        * -Johannes Keukelaar
 794        * yes, always be on the safe side!
 795        * -timj
 796        */
 797       if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 798         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 799       else
 800         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 801     }
 802 }
 803
 804 static void
 805 gtk_real_tree_item_expand (GtkTreeItem *tree_item)
 806 {
 807   GtkTree* tree;
 808
 809   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 810
 811   if (tree_item->subtree && !tree_item->expanded)
 812     {
 813       tree = GTK_TREE (GTK_WIDGET (tree_item)->parent);
 814
 815       /* hide subtree widget */
 816       gtk_widget_show (tree_item->subtree);
 817
 818       /* hide button '+' and show button '-' */
 819       if (tree_item->pixmaps_box)
 820         {
 821           gtk_container_remove (GTK_CONTAINER (tree_item->pixmaps_box),
 822                                 tree_item->plus_pix_widget);
 823           gtk_container_add (GTK_CONTAINER (tree_item->pixmaps_box),
 824                              tree_item->minus_pix_widget);
 825         }
 826       if (tree->root_tree)
 827         gtk_widget_queue_resize (GTK_WIDGET (tree->root_tree));
 828       tree_item->expanded = TRUE;
 829     }
 830 }
 831
 832 static void
 833 gtk_real_tree_item_collapse (GtkTreeItem *tree_item)
 834 {
 835   GtkTree* tree;
 836
 837   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 838
 839   if (tree_item->subtree && tree_item->expanded)
 840     {
 841       tree = GTK_TREE (GTK_WIDGET (tree_item)->parent);
 842
 843       /* hide subtree widget */
 844       gtk_widget_hide (tree_item->subtree);
 845
 846       /* hide button '-' and show button '+' */
 847       if (tree_item->pixmaps_box)
 848         {
 849           gtk_container_remove (GTK_CONTAINER (tree_item->pixmaps_box),
 850                                 tree_item->minus_pix_widget);
 851           gtk_container_add (GTK_CONTAINER (tree_item->pixmaps_box),
 852                              tree_item->plus_pix_widget);
 853         }
 854       if (tree->root_tree)
 855         gtk_widget_queue_resize (GTK_WIDGET (tree->root_tree));
 856       tree_item->expanded = FALSE;
 857     }
 858 }
 859
 860 static void
 861 gtk_tree_item_destroy (GtkObject *object)
 862 {
 863   GtkTreeItem* item;
 864   GtkWidget* child;
 865
 866   g_return_if_fail (GTK_IS_TREE_ITEM (object));
 867
 868 #ifdef TREE_DEBUG
 869   g_message("+ gtk_tree_item_destroy [object %#x]\n", (int)object);
 870 #endif /* TREE_DEBUG */
 871
 872   item = GTK_TREE_ITEM(object);
 873
 874   /* free sub tree if it exist */
 875   child = item->subtree;
 876   if (child)
 877     {
 878       gtk_widget_ref (child);
 879       gtk_widget_unparent (child);
 880       gtk_widget_destroy (child);
 881       gtk_widget_unref (child);
 882       item->subtree = NULL;
 883     }
 884
 885   /* free pixmaps box */
 886   child = item->pixmaps_box;
 887   if (child)
 888     {
 889       gtk_widget_ref (child);
 890       gtk_widget_unparent (child);
 891       gtk_widget_destroy (child);
 892       gtk_widget_unref (child);
 893       item->pixmaps_box = NULL;
 894     }
 895
 896
 897   /* destroy plus pixmap */
 898   if (item->plus_pix_widget)
 899     {
 900       gtk_widget_destroy (item->plus_pix_widget);
 901       gtk_widget_unref (item->plus_pix_widget);
 902       item->plus_pix_widget = NULL;
 903     }
 904
 905   /* destroy minus pixmap */
 906   if (item->minus_pix_widget)
 907     {
 908       gtk_widget_destroy (item->minus_pix_widget);
 909       gtk_widget_unref (item->minus_pix_widget);
 910       item->minus_pix_widget = NULL;
 911     }
 912
 913   /* By removing the pixmaps here, and not in unrealize, we depend on
 914    * the fact that a widget can never change colormap or visual.
 915    */
 916   gtk_tree_item_remove_pixmaps (item);
 917
 918   GTK_OBJECT_CLASS (parent_class)->destroy (object);
 919
 920 #ifdef TREE_DEBUG
 921   g_message("- gtk_tree_item_destroy\n");
 922 #endif /* TREE_DEBUG */
 923 }
 924
 925 void
 926 gtk_tree_item_remove_subtree (GtkTreeItem* item)
 927 {
 928   g_return_if_fail (GTK_IS_TREE_ITEM(item));
 929   g_return_if_fail (item->subtree != NULL);
 930
 931   if (GTK_TREE (item->subtree)->children)
 932     {
 933       /* The following call will remove the children and call
 934        * gtk_tree_item_remove_subtree() again. So we are done.
 935        */
 936       gtk_tree_remove_items (GTK_TREE (item->subtree),
 937                              GTK_TREE (item->subtree)->children);
 938       return;
 939     }
 940
 941   if (GTK_WIDGET_MAPPED (item->subtree))
 942     gtk_widget_unmap (item->subtree);
 943
 944   gtk_widget_unparent (item->subtree);
 945
 946   if (item->pixmaps_box)
 947     gtk_widget_hide (item->pixmaps_box);
 948
 949   item->subtree = NULL;
 950
 951   if (item->expanded)
 952     {
 953       item->expanded = FALSE;
 954       if (item->pixmaps_box)
 955         {
 956           gtk_container_remove (GTK_CONTAINER (item->pixmaps_box),
 957                                 item->minus_pix_widget);
 958           gtk_container_add (GTK_CONTAINER (item->pixmaps_box),
 959                              item->plus_pix_widget);
 960         }
 961     }
 962 }
 963
 964 static void
 965 gtk_tree_item_map (GtkWidget *widget)
 966 {
 967   GtkBin *bin;
 968   GtkTreeItem* item;
 969
 970   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 971
 972   bin = GTK_BIN (widget);
 973   item = GTK_TREE_ITEM(widget);
 974
 975   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 976
 977   if(item->pixmaps_box &&
 978      GTK_WIDGET_VISIBLE (item->pixmaps_box) &&
 979      !GTK_WIDGET_MAPPED (item->pixmaps_box))
 980     gtk_widget_map (item->pixmaps_box);
 981
 982   if (bin->child &&
 983       GTK_WIDGET_VISIBLE (bin->child) &&
 984       !GTK_WIDGET_MAPPED (bin->child))
 985     gtk_widget_map (bin->child);
 986
 987   gdk_window_show (widget->window);
 988 }
 989
 990 static void
 991 gtk_tree_item_unmap (GtkWidget *widget)
 992 {
 993   GtkBin *bin;
 994   GtkTreeItem* item;
 995
 996   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 997
 998   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 999   bin = GTK_BIN (widget);
1000   item = GTK_TREE_ITEM(widget);
1001
1002   gdk_window_hide (widget->window);
1003
1004   if(item->pixmaps_box &&
1005      GTK_WIDGET_VISIBLE (item->pixmaps_box) &&
1006      GTK_WIDGET_MAPPED (item->pixmaps_box))
1007     gtk_widget_unmap (bin->child);
1008
1009   if (bin->child &&
1010       GTK_WIDGET_VISIBLE (bin->child) &&
1011       GTK_WIDGET_MAPPED (bin->child))
1012     gtk_widget_unmap (bin->child);
1013 }
1014
1015 static void
1016 gtk_tree_item_forall (GtkContainer *container,
1017                       gboolean      include_internals,
1018                       GtkCallback   callback,
1019                       gpointer      callback_data)
1020 {
1021   GtkBin *bin;
1022   GtkTreeItem *tree_item;
1023
1024   g_return_if_fail (GTK_IS_TREE_ITEM (container));
1025   g_return_if_fail (callback != NULL);
1026
1027   bin = GTK_BIN (container);
1028   tree_item = GTK_TREE_ITEM (container);
1029
1030   if (bin->child)
1031     (* callback) (bin->child, callback_data);
1032   if (include_internals && tree_item->subtree)
1033     (* callback) (tree_item->subtree, callback_data);
1034   if (include_internals && tree_item->pixmaps_box)
1035     (* callback) (tree_item->pixmaps_box, callback_data);
1036 }
1037
1038 #define __GTK_TREE_ITEM_C__
1039 #include "gtkaliasdef.c"