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
  31 #include "gtklabel.h"
  32 #include "gtkeventbox.h"
  33 #include "gtkpixmap.h"
  34 #include "gtkmain.h"
  35 #include "gtkmarshalers.h"
  36 #include "gtksignal.h"
  37 #define GTK_ENABLE_BROKEN
  38 #include "gtktree.h"
  39 #include "gtktreeitem.h"
  40 #include "gtkintl.h"
  41
  42 #include "gtkalias.h"
  43
  44 #include "tree_plus.xpm"
  45 #include "tree_minus.xpm"
  46
  47 #define DEFAULT_DELTA 9
  48
  49 enum {
  50   COLLAPSE_TREE,
  51   EXPAND_TREE,
  52   LAST_SIGNAL
  53 };
  54
  55 typedef struct _GtkTreePixmaps GtkTreePixmaps;
  56
  57 struct _GtkTreePixmaps {
  58   gint refcount;
  59   GdkColormap *colormap;
  60
  61   GdkPixmap *pixmap_plus;
  62   GdkPixmap *pixmap_minus;
  63   GdkBitmap *mask_plus;
  64   GdkBitmap *mask_minus;
  65 };
  66
  67 static GList *pixmaps = NULL;
  68
  69 static void gtk_tree_item_class_init (GtkTreeItemClass *klass);
  70 static void gtk_tree_item_init       (GtkTreeItem      *tree_item);
  71 static void gtk_tree_item_realize       (GtkWidget        *widget);
  72 static void gtk_tree_item_size_request  (GtkWidget        *widget,
  73                                          GtkRequisition   *requisition);
  74 static void gtk_tree_item_size_allocate (GtkWidget        *widget,
  75                                          GtkAllocation    *allocation);
  76 static void gtk_tree_item_paint         (GtkWidget        *widget,
  77                                          GdkRectangle     *area);
  78 static gint gtk_tree_item_button_press  (GtkWidget        *widget,
  79                                          GdkEventButton   *event);
  80 static gint gtk_tree_item_expose        (GtkWidget        *widget,
  81                                          GdkEventExpose   *event);
  82 static void gtk_tree_item_forall        (GtkContainer    *container,
  83                                          gboolean         include_internals,
  84                                          GtkCallback      callback,
  85                                          gpointer         callback_data);
  86
  87 static void gtk_real_tree_item_select   (GtkItem          *item);
  88 static void gtk_real_tree_item_deselect (GtkItem          *item);
  89 static void gtk_real_tree_item_toggle   (GtkItem          *item);
  90 static void gtk_real_tree_item_expand   (GtkTreeItem      *item);
  91 static void gtk_real_tree_item_collapse (GtkTreeItem      *item);
  92 static void gtk_tree_item_destroy        (GtkObject *object);
  93 static gint gtk_tree_item_subtree_button_click (GtkWidget *widget);
  94 static void gtk_tree_item_subtree_button_changed_state (GtkWidget *widget);
  95
  96 static void gtk_tree_item_map(GtkWidget*);
  97 static void gtk_tree_item_unmap(GtkWidget*);
  98
  99 static void gtk_tree_item_add_pixmaps    (GtkTreeItem       *tree_item);
 100 static void gtk_tree_item_remove_pixmaps (GtkTreeItem       *tree_item);
 101
 102 static GtkItemClass *parent_class = NULL;
 103 static guint tree_item_signals[LAST_SIGNAL] = { 0 };
 104
 105 GtkType
 106 gtk_tree_item_get_type (void)
 107 {
 108   static GtkType tree_item_type = 0;
 109
 110   if (!tree_item_type)
 111     {
 112       static const GtkTypeInfo tree_item_info =
 113       {
 114         "GtkTreeItem",
 115         sizeof (GtkTreeItem),
 116         sizeof (GtkTreeItemClass),
 117         (GtkClassInitFunc) gtk_tree_item_class_init,
 118         (GtkObjectInitFunc) gtk_tree_item_init,
 119         /* reserved_1 */ NULL,
 120         /* reserved_2 */ NULL,
 121         (GtkClassInitFunc) NULL,
 122       };
 123
 124       I_("GtkTreeItem");
 125       tree_item_type = gtk_type_unique (gtk_item_get_type (), &tree_item_info);
 126     }
 127
 128   return tree_item_type;
 129 }
 130
 131 static void
 132 gtk_tree_item_class_init (GtkTreeItemClass *class)
 133 {
 134   GtkObjectClass *object_class;
 135   GtkWidgetClass *widget_class;
 136   GtkContainerClass *container_class;
 137   GtkItemClass *item_class;
 138
 139   parent_class = gtk_type_class (GTK_TYPE_ITEM);
 140
 141   object_class = (GtkObjectClass*) class;
 142   widget_class = (GtkWidgetClass*) class;
 143   item_class = (GtkItemClass*) class;
 144   container_class = (GtkContainerClass*) class;
 145
 146   object_class->destroy = gtk_tree_item_destroy;
 147
 148   widget_class->realize = gtk_tree_item_realize;
 149   widget_class->size_request = gtk_tree_item_size_request;
 150   widget_class->size_allocate = gtk_tree_item_size_allocate;
 151   widget_class->button_press_event = gtk_tree_item_button_press;
 152   widget_class->expose_event = gtk_tree_item_expose;
 153   widget_class->map = gtk_tree_item_map;
 154   widget_class->unmap = gtk_tree_item_unmap;
 155
 156   container_class->forall = gtk_tree_item_forall;
 157
 158   item_class->select = gtk_real_tree_item_select;
 159   item_class->deselect = gtk_real_tree_item_deselect;
 160   item_class->toggle = gtk_real_tree_item_toggle;
 161
 162   class->expand = gtk_real_tree_item_expand;
 163   class->collapse = gtk_real_tree_item_collapse;
 164
 165   tree_item_signals[EXPAND_TREE] =
 166     gtk_signal_new (I_("expand"),
 167                     GTK_RUN_FIRST,
 168                     GTK_CLASS_TYPE (object_class),
 169                     GTK_SIGNAL_OFFSET (GtkTreeItemClass, expand),
 170                     _gtk_marshal_VOID__VOID,
 171                     GTK_TYPE_NONE, 0);
 172   tree_item_signals[COLLAPSE_TREE] =
 173     gtk_signal_new (I_("collapse"),
 174                     GTK_RUN_FIRST,
 175                     GTK_CLASS_TYPE (object_class),
 176                     GTK_SIGNAL_OFFSET (GtkTreeItemClass, collapse),
 177                     _gtk_marshal_VOID__VOID,
 178                     GTK_TYPE_NONE, 0);
 179 }
 180
 181 /* callback for event box mouse event */
 182 static gint
 183 gtk_tree_item_subtree_button_click (GtkWidget *widget)
 184 {
 185   GtkTreeItem* item;
 186
 187   g_return_val_if_fail (GTK_IS_EVENT_BOX (widget), FALSE);
 188
 189   item = (GtkTreeItem*) gtk_object_get_user_data (GTK_OBJECT (widget));
 190   if (!gtk_widget_is_sensitive (GTK_WIDGET (item)))
 191     return FALSE;
 192
 193   if (item->expanded)
 194     gtk_tree_item_collapse (item);
 195   else
 196     gtk_tree_item_expand (item);
 197
 198   return TRUE;
 199 }
 200
 201 /* callback for event box state changed */
 202 static void
 203 gtk_tree_item_subtree_button_changed_state (GtkWidget *widget)
 204 {
 205   g_return_if_fail (GTK_IS_EVENT_BOX (widget));
 206
 207   if (gtk_widget_get_visible (widget))
 208     {
 209
 210       if (widget->state == GTK_STATE_NORMAL)
 211         gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
 212       else
 213         gdk_window_set_background (widget->window, &widget->style->bg[widget->state]);
 214
 215       if (gtk_widget_is_drawable (widget))
 216         gdk_window_clear_area (widget->window, 0, 0,
 217                                widget->allocation.width, widget->allocation.height);
 218     }
 219 }
 220
 221 static void
 222 gtk_tree_item_init (GtkTreeItem *tree_item)
 223 {
 224   GtkWidget *eventbox, *pixmapwid;
 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                      G_CALLBACK (gtk_tree_item_subtree_button_changed_state),
 235                      (gpointer)NULL);
 236   gtk_signal_connect(GTK_OBJECT(eventbox), "realize",
 237                      G_CALLBACK (gtk_tree_item_subtree_button_changed_state),
 238                      (gpointer)NULL);
 239   gtk_signal_connect(GTK_OBJECT(eventbox), "button-press-event",
 240                      G_CALLBACK (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   GTK_WIDGET_CLASS (parent_class)->realize (widget);
 446
 447   gdk_window_set_background (widget->window,
 448                              &widget->style->base[GTK_STATE_NORMAL]);
 449
 450   gtk_tree_item_add_pixmaps (GTK_TREE_ITEM (widget));
 451 }
 452
 453 static void
 454 gtk_tree_item_size_request (GtkWidget      *widget,
 455                             GtkRequisition *requisition)
 456 {
 457   GtkBin *bin = GTK_BIN (widget);
 458   GtkTreeItem *item = GTK_TREE_ITEM (widget);
 459   GtkRequisition child_requisition;
 460
 461   requisition->width = (GTK_CONTAINER (widget)->border_width +
 462                         widget->style->xthickness) * 2;
 463   requisition->height = GTK_CONTAINER (widget)->border_width * 2;
 464
 465   if (bin->child && gtk_widget_get_visible (bin->child))
 466     {
 467       GtkRequisition pix_requisition;
 468
 469       gtk_widget_size_request (bin->child, &child_requisition);
 470
 471       requisition->width += child_requisition.width;
 472
 473       gtk_widget_size_request (item->pixmaps_box,
 474                                &pix_requisition);
 475       requisition->width += pix_requisition.width + DEFAULT_DELTA +
 476         GTK_TREE (widget->parent)->current_indent;
 477
 478       requisition->height += MAX (child_requisition.height,
 479                                   pix_requisition.height);
 480     }
 481 }
 482
 483 static void
 484 gtk_tree_item_size_allocate (GtkWidget     *widget,
 485                              GtkAllocation *allocation)
 486 {
 487   GtkBin *bin = GTK_BIN (widget);
 488   GtkTreeItem *item = GTK_TREE_ITEM (widget);
 489   GtkAllocation child_allocation;
 490   gint border_width;
 491   int temp;
 492
 493   widget->allocation = *allocation;
 494   if (GTK_WIDGET_REALIZED (widget))
 495     gdk_window_move_resize (widget->window,
 496                             allocation->x, allocation->y,
 497                             allocation->width, allocation->height);
 498
 499   if (bin->child)
 500     {
 501       border_width = (GTK_CONTAINER (widget)->border_width +
 502                       widget->style->xthickness);
 503
 504       child_allocation.x = border_width + GTK_TREE(widget->parent)->current_indent;
 505       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 506
 507       child_allocation.width = item->pixmaps_box->requisition.width;
 508       child_allocation.height = item->pixmaps_box->requisition.height;
 509
 510       temp = allocation->height - child_allocation.height;
 511       child_allocation.y += ( temp / 2 ) + ( temp % 2 );
 512
 513       gtk_widget_size_allocate (item->pixmaps_box, &child_allocation);
 514
 515       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 516       child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 517       child_allocation.x += item->pixmaps_box->requisition.width+DEFAULT_DELTA;
 518
 519       child_allocation.width =
 520         MAX (1, (gint)allocation->width - ((gint)child_allocation.x + border_width));
 521
 522       gtk_widget_size_allocate (bin->child, &child_allocation);
 523     }
 524 }
 525
 526 static void
 527 gtk_tree_item_draw_lines (GtkWidget *widget)
 528 {
 529   GtkTreeItem* item;
 530   GtkTree* tree;
 531   guint lx1, ly1, lx2, ly2;
 532   GdkGC* gc;
 533
 534   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 535
 536   item = GTK_TREE_ITEM(widget);
 537   tree = GTK_TREE(widget->parent);
 538
 539   if (!tree->view_line)
 540     return;
 541
 542   gc = widget->style->text_gc[GTK_STATE_NORMAL];
 543
 544   /* draw vertical line */
 545   lx1 = item->pixmaps_box->allocation.width;
 546   lx1 = lx2 = ((lx1 / 2) + (lx1 % 2) +
 547                GTK_CONTAINER (widget)->border_width + 1 + tree->current_indent);
 548   ly1 = 0;
 549   ly2 = widget->allocation.height;
 550
 551   if (g_list_last (tree->children)->data == widget)
 552     ly2 = (ly2 / 2) + (ly2 % 2);
 553
 554   if (tree != tree->root_tree)
 555     gdk_draw_line (widget->window, gc, lx1, ly1, lx2, ly2);
 556
 557   /* draw vertical line for subtree connecting */
 558   if(g_list_last(tree->children)->data != (gpointer)widget)
 559     ly2 = (ly2 / 2) + (ly2 % 2);
 560
 561   lx2 += DEFAULT_DELTA;
 562
 563   if (item->subtree && item->expanded)
 564     gdk_draw_line (widget->window, gc,
 565                    lx2, ly2, lx2, widget->allocation.height);
 566
 567   /* draw horizontal line */
 568   ly1 = ly2;
 569   lx2 += 2;
 570
 571   gdk_draw_line (widget->window, gc, lx1, ly1, lx2, ly2);
 572
 573   lx2 -= DEFAULT_DELTA+2;
 574   ly1 = 0;
 575   ly2 = widget->allocation.height;
 576
 577   if (tree != tree->root_tree)
 578     {
 579       item = GTK_TREE_ITEM (tree->tree_owner);
 580       tree = GTK_TREE (GTK_WIDGET (tree)->parent);
 581       while (tree != tree->root_tree)
 582         {
 583           lx1 = lx2 -= tree->indent_value;
 584
 585           if (g_list_last (tree->children)->data != item)
 586             gdk_draw_line (widget->window, gc, lx1, ly1, lx2, ly2);
 587           item = GTK_TREE_ITEM (tree->tree_owner);
 588           tree = GTK_TREE (GTK_WIDGET (tree)->parent);
 589         }
 590     }
 591 }
 592
 593 static void
 594 gtk_tree_item_paint (GtkWidget    *widget,
 595                      GdkRectangle *area)
 596 {
 597   GdkRectangle child_area, item_area;
 598   GtkTreeItem* tree_item;
 599
 600   /* FIXME: We should honor tree->view_mode, here - I think
 601    * the desired effect is that when the mode is VIEW_ITEM,
 602    * only the subitem is drawn as selected, not the entire
 603    * line. (Like the way that the tree in Windows Explorer
 604    * works).
 605    */
 606   if (gtk_widget_is_drawable (widget))
 607     {
 608       tree_item = GTK_TREE_ITEM(widget);
 609
 610       if (widget->state == GTK_STATE_NORMAL)
 611         {
 612           gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 613           gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
 614         }
 615       else
 616         {
 617           if (!gtk_widget_is_sensitive (widget))
 618             gtk_paint_flat_box(widget->style, widget->window,
 619                                widget->state, GTK_SHADOW_NONE,
 620                                area, widget, "treeitem",
 621                                0, 0, -1, -1);
 622           else
 623             gtk_paint_flat_box(widget->style, widget->window,
 624                                widget->state, GTK_SHADOW_ETCHED_OUT,
 625                                area, widget, "treeitem",
 626                                0, 0, -1, -1);
 627         }
 628
 629       /* draw left size of tree item */
 630       item_area.x = 0;
 631       item_area.y = 0;
 632       item_area.width = (tree_item->pixmaps_box->allocation.width + DEFAULT_DELTA +
 633                          GTK_TREE (widget->parent)->current_indent + 2);
 634       item_area.height = widget->allocation.height;
 635
 636
 637       if (gdk_rectangle_intersect(&item_area, area, &child_area))
 638         {
 639
 640           gtk_tree_item_draw_lines(widget);
 641
 642           if (tree_item->pixmaps_box &&
 643               gtk_widget_get_visible(tree_item->pixmaps_box) &&
 644               gtk_widget_intersect (tree_item->pixmaps_box, area, &child_area))
 645             {
 646               gtk_widget_queue_draw_area (tree_item->pixmaps_box,
 647                                           child_area.x, child_area.y,
 648                                           child_area.width, child_area.height);
 649               gdk_window_process_updates (tree_item->pixmaps_box->window, TRUE);
 650             }
 651         }
 652
 653       if (gtk_widget_has_focus (widget))
 654         gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 655                          NULL, widget, "treeitem",
 656                          0, 0,
 657                          widget->allocation.width,
 658                          widget->allocation.height);
 659
 660     }
 661 }
 662
 663 static gint
 664 gtk_tree_item_button_press (GtkWidget      *widget,
 665                             GdkEventButton *event)
 666 {
 667   if (event->type == GDK_BUTTON_PRESS
 668       && gtk_widget_is_sensitive(widget)
 669       && !gtk_widget_has_focus (widget))
 670     gtk_widget_grab_focus (widget);
 671
 672   return (event->type == GDK_BUTTON_PRESS && gtk_widget_is_sensitive(widget));
 673 }
 674
 675 static void
 676 gtk_tree_item_expose_child (GtkWidget *child,
 677                             gpointer   client_data)
 678 {
 679   struct {
 680     GtkWidget *container;
 681     GdkEventExpose *event;
 682   } *data = client_data;
 683
 684   if (gtk_widget_is_drawable (child) &&
 685       !gtk_widget_get_has_window (child) &&
 686       (child->window == data->event->window))
 687     {
 688       GdkEvent *child_event = gdk_event_new (GDK_EXPOSE);
 689       child_event->expose = *data->event;
 690       g_object_ref (child_event->expose.window);
 691
 692       child_event->expose.region = gtk_widget_region_intersect (child,
 693                                                                 data->event->region);
 694       if (!gdk_region_empty (child_event->expose.region))
 695         {
 696           gdk_region_get_clipbox (child_event->expose.region, &child_event->expose.area);
 697           gtk_widget_send_expose (child, child_event);
 698         }
 699       gdk_event_free (child_event);
 700     }
 701 }
 702
 703 static gint
 704 gtk_tree_item_expose (GtkWidget      *widget,
 705                       GdkEventExpose *event)
 706 {
 707   struct {
 708     GtkWidget *container;
 709     GdkEventExpose *event;
 710   } data;
 711
 712   if (gtk_widget_is_drawable (widget))
 713     {
 714       gtk_tree_item_paint (widget, &event->area);
 715
 716       data.container = widget;
 717       data.event = event;
 718
 719       gtk_container_forall (GTK_CONTAINER (widget),
 720                             gtk_tree_item_expose_child,
 721                             &data);
 722    }
 723
 724   return FALSE;
 725 }
 726
 727 static void
 728 gtk_real_tree_item_select (GtkItem *item)
 729 {
 730   GtkWidget *widget;
 731
 732   g_return_if_fail (GTK_IS_TREE_ITEM (item));
 733
 734   widget = GTK_WIDGET (item);
 735
 736   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 737
 738   if (!widget->parent || GTK_TREE (widget->parent)->view_mode == GTK_TREE_VIEW_LINE)
 739     gtk_widget_set_state (GTK_TREE_ITEM (item)->pixmaps_box, GTK_STATE_SELECTED);
 740 }
 741
 742 static void
 743 gtk_real_tree_item_deselect (GtkItem *item)
 744 {
 745   GtkTreeItem *tree_item;
 746   GtkWidget *widget;
 747
 748   g_return_if_fail (GTK_IS_TREE_ITEM (item));
 749
 750   tree_item = GTK_TREE_ITEM (item);
 751   widget = GTK_WIDGET (item);
 752
 753   gtk_widget_set_state (widget, GTK_STATE_NORMAL);
 754
 755   if (!widget->parent || GTK_TREE (widget->parent)->view_mode == GTK_TREE_VIEW_LINE)
 756     gtk_widget_set_state (tree_item->pixmaps_box, GTK_STATE_NORMAL);
 757 }
 758
 759 static void
 760 gtk_real_tree_item_toggle (GtkItem *item)
 761 {
 762   g_return_if_fail (GTK_IS_TREE_ITEM (item));
 763
 764   if(!gtk_widget_is_sensitive(GTK_WIDGET (item)))
 765     return;
 766
 767   if (GTK_IS_TREE (GTK_WIDGET (item)->parent))
 768     gtk_tree_select_child (GTK_TREE (GTK_WIDGET (item)->parent),
 769                            GTK_WIDGET (item));
 770   else
 771     {
 772       /* Should we really bother with this bit? A listitem not in a list?
 773        * -Johannes Keukelaar
 774        * yes, always be on the safe side!
 775        * -timj
 776        */
 777       if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 778         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 779       else
 780         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 781     }
 782 }
 783
 784 static void
 785 gtk_real_tree_item_expand (GtkTreeItem *tree_item)
 786 {
 787   GtkTree* tree;
 788
 789   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 790
 791   if (tree_item->subtree && !tree_item->expanded)
 792     {
 793       tree = GTK_TREE (GTK_WIDGET (tree_item)->parent);
 794
 795       /* hide subtree widget */
 796       gtk_widget_show (tree_item->subtree);
 797
 798       /* hide button '+' and show button '-' */
 799       if (tree_item->pixmaps_box)
 800         {
 801           gtk_container_remove (GTK_CONTAINER (tree_item->pixmaps_box),
 802                                 tree_item->plus_pix_widget);
 803           gtk_container_add (GTK_CONTAINER (tree_item->pixmaps_box),
 804                              tree_item->minus_pix_widget);
 805         }
 806       if (tree->root_tree)
 807         gtk_widget_queue_resize (GTK_WIDGET (tree->root_tree));
 808       tree_item->expanded = TRUE;
 809     }
 810 }
 811
 812 static void
 813 gtk_real_tree_item_collapse (GtkTreeItem *tree_item)
 814 {
 815   GtkTree* tree;
 816
 817   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 818
 819   if (tree_item->subtree && tree_item->expanded)
 820     {
 821       tree = GTK_TREE (GTK_WIDGET (tree_item)->parent);
 822
 823       /* hide subtree widget */
 824       gtk_widget_hide (tree_item->subtree);
 825
 826       /* hide button '-' and show button '+' */
 827       if (tree_item->pixmaps_box)
 828         {
 829           gtk_container_remove (GTK_CONTAINER (tree_item->pixmaps_box),
 830                                 tree_item->minus_pix_widget);
 831           gtk_container_add (GTK_CONTAINER (tree_item->pixmaps_box),
 832                              tree_item->plus_pix_widget);
 833         }
 834       if (tree->root_tree)
 835         gtk_widget_queue_resize (GTK_WIDGET (tree->root_tree));
 836       tree_item->expanded = FALSE;
 837     }
 838 }
 839
 840 static void
 841 gtk_tree_item_destroy (GtkObject *object)
 842 {
 843   GtkTreeItem* item = GTK_TREE_ITEM(object);
 844   GtkWidget* child;
 845
 846 #ifdef TREE_DEBUG
 847   g_message("+ gtk_tree_item_destroy [object %#x]\n", (int)object);
 848 #endif /* TREE_DEBUG */
 849
 850   /* free sub tree if it exist */
 851   child = item->subtree;
 852   if (child)
 853     {
 854       g_object_ref (child);
 855       gtk_widget_unparent (child);
 856       gtk_widget_destroy (child);
 857       g_object_unref (child);
 858       item->subtree = NULL;
 859     }
 860
 861   /* free pixmaps box */
 862   child = item->pixmaps_box;
 863   if (child)
 864     {
 865       g_object_ref (child);
 866       gtk_widget_unparent (child);
 867       gtk_widget_destroy (child);
 868       g_object_unref (child);
 869       item->pixmaps_box = NULL;
 870     }
 871
 872
 873   /* destroy plus pixmap */
 874   if (item->plus_pix_widget)
 875     {
 876       gtk_widget_destroy (item->plus_pix_widget);
 877       g_object_unref (item->plus_pix_widget);
 878       item->plus_pix_widget = NULL;
 879     }
 880
 881   /* destroy minus pixmap */
 882   if (item->minus_pix_widget)
 883     {
 884       gtk_widget_destroy (item->minus_pix_widget);
 885       g_object_unref (item->minus_pix_widget);
 886       item->minus_pix_widget = NULL;
 887     }
 888
 889   /* By removing the pixmaps here, and not in unrealize, we depend on
 890    * the fact that a widget can never change colormap or visual.
 891    */
 892   gtk_tree_item_remove_pixmaps (item);
 893
 894   GTK_OBJECT_CLASS (parent_class)->destroy (object);
 895
 896 #ifdef TREE_DEBUG
 897   g_message("- gtk_tree_item_destroy\n");
 898 #endif /* TREE_DEBUG */
 899 }
 900
 901 void
 902 gtk_tree_item_remove_subtree (GtkTreeItem* item)
 903 {
 904   g_return_if_fail (GTK_IS_TREE_ITEM(item));
 905   g_return_if_fail (item->subtree != NULL);
 906
 907   if (GTK_TREE (item->subtree)->children)
 908     {
 909       /* The following call will remove the children and call
 910        * gtk_tree_item_remove_subtree() again. So we are done.
 911        */
 912       gtk_tree_remove_items (GTK_TREE (item->subtree),
 913                              GTK_TREE (item->subtree)->children);
 914       return;
 915     }
 916
 917   if (GTK_WIDGET_MAPPED (item->subtree))
 918     gtk_widget_unmap (item->subtree);
 919
 920   gtk_widget_unparent (item->subtree);
 921
 922   if (item->pixmaps_box)
 923     gtk_widget_hide (item->pixmaps_box);
 924
 925   item->subtree = NULL;
 926
 927   if (item->expanded)
 928     {
 929       item->expanded = FALSE;
 930       if (item->pixmaps_box)
 931         {
 932           gtk_container_remove (GTK_CONTAINER (item->pixmaps_box),
 933                                 item->minus_pix_widget);
 934           gtk_container_add (GTK_CONTAINER (item->pixmaps_box),
 935                              item->plus_pix_widget);
 936         }
 937     }
 938 }
 939
 940 static void
 941 gtk_tree_item_map (GtkWidget *widget)
 942 {
 943   GtkBin *bin = GTK_BIN (widget);
 944   GtkTreeItem* item = GTK_TREE_ITEM(widget);
 945
 946   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 947
 948   if(item->pixmaps_box &&
 949      gtk_widget_get_visible (item->pixmaps_box) &&
 950      !GTK_WIDGET_MAPPED (item->pixmaps_box))
 951     gtk_widget_map (item->pixmaps_box);
 952
 953   if (bin->child &&
 954       gtk_widget_get_visible (bin->child) &&
 955       !GTK_WIDGET_MAPPED (bin->child))
 956     gtk_widget_map (bin->child);
 957
 958   gdk_window_show (widget->window);
 959 }
 960
 961 static void
 962 gtk_tree_item_unmap (GtkWidget *widget)
 963 {
 964   GtkBin *bin = GTK_BIN (widget);
 965   GtkTreeItem* item = GTK_TREE_ITEM(widget);
 966
 967   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 968
 969   gdk_window_hide (widget->window);
 970
 971   if(item->pixmaps_box &&
 972      gtk_widget_get_visible (item->pixmaps_box) &&
 973      GTK_WIDGET_MAPPED (item->pixmaps_box))
 974     gtk_widget_unmap (bin->child);
 975
 976   if (bin->child &&
 977       gtk_widget_get_visible (bin->child) &&
 978       GTK_WIDGET_MAPPED (bin->child))
 979     gtk_widget_unmap (bin->child);
 980 }
 981
 982 static void
 983 gtk_tree_item_forall (GtkContainer *container,
 984                       gboolean      include_internals,
 985                       GtkCallback   callback,
 986                       gpointer      callback_data)
 987 {
 988   GtkBin *bin = GTK_BIN (container);
 989   GtkTreeItem *tree_item = GTK_TREE_ITEM (container);
 990
 991   if (bin->child)
 992     (* callback) (bin->child, callback_data);
 993   if (include_internals && tree_item->subtree)
 994     (* callback) (tree_item->subtree, callback_data);
 995   if (include_internals && tree_item->pixmaps_box)
 996     (* callback) (tree_item->pixmaps_box, callback_data);
 997 }
 998
 999 #define __GTK_TREE_ITEM_C__
1000 #include "gtkaliasdef.c"