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   gtk_widget_ref (tree_item->plus_pix_widget);
 252   gtk_object_sink (GTK_OBJECT (tree_item->plus_pix_widget));
 253
 254   /* create pixmap for button '-' */
 255   pixmapwid = gtk_type_new (gtk_pixmap_get_type ());
 256   if (tree_item->expanded)
 257     gtk_container_add (GTK_CONTAINER (eventbox), pixmapwid);
 258   gtk_widget_show (pixmapwid);
 259   tree_item->minus_pix_widget = pixmapwid;
 260   gtk_widget_ref (tree_item->minus_pix_widget);
 261   gtk_object_sink (GTK_OBJECT (tree_item->minus_pix_widget));
 262
 263   gtk_widget_set_parent (eventbox, GTK_WIDGET (tree_item));
 264 }
 265
 266
 267 GtkWidget*
 268 gtk_tree_item_new (void)
 269 {
 270   GtkWidget *tree_item;
 271
 272   tree_item = GTK_WIDGET (gtk_type_new (gtk_tree_item_get_type ()));
 273
 274   return tree_item;
 275 }
 276
 277 GtkWidget*
 278 gtk_tree_item_new_with_label (const gchar *label)
 279 {
 280   GtkWidget *tree_item;
 281   GtkWidget *label_widget;
 282
 283   tree_item = gtk_tree_item_new ();
 284   label_widget = gtk_label_new (label);
 285   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 286
 287   gtk_container_add (GTK_CONTAINER (tree_item), label_widget);
 288   gtk_widget_show (label_widget);
 289
 290
 291   return tree_item;
 292 }
 293
 294 void
 295 gtk_tree_item_set_subtree (GtkTreeItem *tree_item,
 296                            GtkWidget   *subtree)
 297 {
 298   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 299   g_return_if_fail (GTK_IS_TREE (subtree));
 300
 301   if (tree_item->subtree)
 302     {
 303       g_warning("there is already a subtree for this tree item\n");
 304       return;
 305     }
 306
 307   tree_item->subtree = subtree;
 308   GTK_TREE (subtree)->tree_owner = GTK_WIDGET (tree_item);
 309
 310   /* show subtree button */
 311   if (tree_item->pixmaps_box)
 312     gtk_widget_show (tree_item->pixmaps_box);
 313
 314   if (tree_item->expanded)
 315     gtk_widget_show (subtree);
 316   else
 317     gtk_widget_hide (subtree);
 318
 319   gtk_widget_set_parent (subtree, GTK_WIDGET (tree_item)->parent);
 320 }
 321
 322 void
 323 gtk_tree_item_select (GtkTreeItem *tree_item)
 324 {
 325   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 326
 327   gtk_item_select (GTK_ITEM (tree_item));
 328 }
 329
 330 void
 331 gtk_tree_item_deselect (GtkTreeItem *tree_item)
 332 {
 333   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 334
 335   gtk_item_deselect (GTK_ITEM (tree_item));
 336 }
 337
 338 void
 339 gtk_tree_item_expand (GtkTreeItem *tree_item)
 340 {
 341   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 342
 343   gtk_signal_emit (GTK_OBJECT (tree_item), tree_item_signals[EXPAND_TREE], NULL);
 344 }
 345
 346 void
 347 gtk_tree_item_collapse (GtkTreeItem *tree_item)
 348 {
 349   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 350
 351   gtk_signal_emit (GTK_OBJECT (tree_item), tree_item_signals[COLLAPSE_TREE], NULL);
 352 }
 353
 354 static void
 355 gtk_tree_item_add_pixmaps (GtkTreeItem *tree_item)
 356 {
 357   GList *tmp_list;
 358   GdkColormap *colormap;
 359   GtkTreePixmaps *pixmap_node = NULL;
 360
 361   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 362
 363   if (tree_item->pixmaps)
 364     return;
 365
 366   colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_item));
 367
 368   tmp_list = pixmaps;
 369   while (tmp_list)
 370     {
 371       pixmap_node = (GtkTreePixmaps *)tmp_list->data;
 372
 373       if (pixmap_node->colormap == colormap)
 374         break;
 375
 376       tmp_list = tmp_list->next;
 377     }
 378
 379   if (tmp_list)
 380     {
 381       pixmap_node->refcount++;
 382       tree_item->pixmaps = tmp_list;
 383     }
 384   else
 385     {
 386       pixmap_node = g_new (GtkTreePixmaps, 1);
 387
 388       pixmap_node->colormap = colormap;
 389       g_object_ref (colormap);
 390
 391       pixmap_node->refcount = 1;
 392
 393       /* create pixmaps for plus icon */
 394       pixmap_node->pixmap_plus =
 395         gdk_pixmap_create_from_xpm_d (GTK_WIDGET (tree_item)->window,
 396                                       &pixmap_node->mask_plus,
 397                                       NULL,
 398                                       (gchar **)tree_plus);
 399
 400       /* create pixmaps for minus icon */
 401       pixmap_node->pixmap_minus =
 402         gdk_pixmap_create_from_xpm_d (GTK_WIDGET (tree_item)->window,
 403                                       &pixmap_node->mask_minus,
 404                                       NULL,
 405                                       (gchar **)tree_minus);
 406
 407       tree_item->pixmaps = pixmaps = g_list_prepend (pixmaps, pixmap_node);
 408     }
 409
 410   gtk_pixmap_set (GTK_PIXMAP (tree_item->plus_pix_widget),
 411                   pixmap_node->pixmap_plus, pixmap_node->mask_plus);
 412   gtk_pixmap_set (GTK_PIXMAP (tree_item->minus_pix_widget),
 413                   pixmap_node->pixmap_minus, pixmap_node->mask_minus);
 414 }
 415
 416 static void
 417 gtk_tree_item_remove_pixmaps (GtkTreeItem *tree_item)
 418 {
 419   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 420
 421   if (tree_item->pixmaps)
 422     {
 423       GtkTreePixmaps *pixmap_node = (GtkTreePixmaps *)tree_item->pixmaps->data;
 424
 425       g_assert (pixmap_node->refcount > 0);
 426
 427       if (--pixmap_node->refcount == 0)
 428         {
 429           g_object_unref (pixmap_node->colormap);
 430           g_object_unref (pixmap_node->pixmap_plus);
 431           g_object_unref (pixmap_node->mask_plus);
 432           g_object_unref (pixmap_node->pixmap_minus);
 433           g_object_unref (pixmap_node->mask_minus);
 434
 435           pixmaps = g_list_remove_link (pixmaps, tree_item->pixmaps);
 436           g_list_free_1 (tree_item->pixmaps);
 437           g_free (pixmap_node);
 438         }
 439
 440       tree_item->pixmaps = NULL;
 441     }
 442 }
 443
 444 static void
 445 gtk_tree_item_realize (GtkWidget *widget)
 446 {
 447   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 448
 449   if (GTK_WIDGET_CLASS (parent_class)->realize)
 450     (* GTK_WIDGET_CLASS (parent_class)->realize) (widget);
 451
 452   gdk_window_set_background (widget->window,
 453                              &widget->style->base[GTK_STATE_NORMAL]);
 454
 455   gtk_tree_item_add_pixmaps (GTK_TREE_ITEM (widget));
 456 }
 457
 458 static void
 459 gtk_tree_item_size_request (GtkWidget      *widget,
 460                             GtkRequisition *requisition)
 461 {
 462   GtkBin *bin;
 463   GtkTreeItem* item;
 464   GtkRequisition child_requisition;
 465
 466   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 467   g_return_if_fail (requisition != NULL);
 468
 469   bin = GTK_BIN (widget);
 470   item = GTK_TREE_ITEM(widget);
 471
 472   requisition->width = (GTK_CONTAINER (widget)->border_width +
 473                         widget->style->xthickness) * 2;
 474   requisition->height = GTK_CONTAINER (widget)->border_width * 2;
 475
 476   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 477     {
 478       GtkRequisition pix_requisition;
 479
 480       gtk_widget_size_request (bin->child, &child_requisition);
 481
 482       requisition->width += child_requisition.width;
 483
 484       gtk_widget_size_request (item->pixmaps_box,
 485                                &pix_requisition);
 486       requisition->width += pix_requisition.width + DEFAULT_DELTA +
 487         GTK_TREE (widget->parent)->current_indent;
 488
 489       requisition->height += MAX (child_requisition.height,
 490                                   pix_requisition.height);
 491     }
 492 }
 493
 494 static void
 495 gtk_tree_item_size_allocate (GtkWidget     *widget,
 496                              GtkAllocation *allocation)
 497 {
 498   GtkBin *bin;
 499   GtkTreeItem* item;
 500   GtkAllocation child_allocation;
 501   gint border_width;
 502   int temp;
 503
 504   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 505   g_return_if_fail (allocation != NULL);
 506
 507   widget->allocation = *allocation;
 508   if (GTK_WIDGET_REALIZED (widget))
 509     gdk_window_move_resize (widget->window,
 510                             allocation->x, allocation->y,
 511                             allocation->width, allocation->height);
 512
 513   bin = GTK_BIN (widget);
 514   item = GTK_TREE_ITEM(widget);
 515
 516   if (bin->child)
 517     {
 518       border_width = (GTK_CONTAINER (widget)->border_width +
 519                       widget->style->xthickness);
 520
 521       child_allocation.x = border_width + GTK_TREE(widget->parent)->current_indent;
 522       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 523
 524       child_allocation.width = item->pixmaps_box->requisition.width;
 525       child_allocation.height = item->pixmaps_box->requisition.height;
 526
 527       temp = allocation->height - child_allocation.height;
 528       child_allocation.y += ( temp / 2 ) + ( temp % 2 );
 529
 530       gtk_widget_size_allocate (item->pixmaps_box, &child_allocation);
 531
 532       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 533       child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 534       child_allocation.x += item->pixmaps_box->requisition.width+DEFAULT_DELTA;
 535
 536       child_allocation.width =
 537         MAX (1, (gint)allocation->width - ((gint)child_allocation.x + border_width));
 538
 539       gtk_widget_size_allocate (bin->child, &child_allocation);
 540     }
 541 }
 542
 543 static void
 544 gtk_tree_item_draw_lines (GtkWidget *widget)
 545 {
 546   GtkTreeItem* item;
 547   GtkTree* tree;
 548   guint lx1, ly1, lx2, ly2;
 549   GdkGC* gc;
 550
 551   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 552
 553   item = GTK_TREE_ITEM(widget);
 554   tree = GTK_TREE(widget->parent);
 555
 556   if (!tree->view_line)
 557     return;
 558
 559   gc = widget->style->text_gc[GTK_STATE_NORMAL];
 560
 561   /* draw vertical line */
 562   lx1 = item->pixmaps_box->allocation.width;
 563   lx1 = lx2 = ((lx1 / 2) + (lx1 % 2) +
 564                GTK_CONTAINER (widget)->border_width + 1 + tree->current_indent);
 565   ly1 = 0;
 566   ly2 = widget->allocation.height;
 567
 568   if (g_list_last (tree->children)->data == widget)
 569     ly2 = (ly2 / 2) + (ly2 % 2);
 570
 571   if (tree != tree->root_tree)
 572     gdk_draw_line (widget->window, gc, lx1, ly1, lx2, ly2);
 573
 574   /* draw vertical line for subtree connecting */
 575   if(g_list_last(tree->children)->data != (gpointer)widget)
 576     ly2 = (ly2 / 2) + (ly2 % 2);
 577
 578   lx2 += DEFAULT_DELTA;
 579
 580   if (item->subtree && item->expanded)
 581     gdk_draw_line (widget->window, gc,
 582                    lx2, ly2, lx2, widget->allocation.height);
 583
 584   /* draw horizontal line */
 585   ly1 = ly2;
 586   lx2 += 2;
 587
 588   gdk_draw_line (widget->window, gc, lx1, ly1, lx2, ly2);
 589
 590   lx2 -= DEFAULT_DELTA+2;
 591   ly1 = 0;
 592   ly2 = widget->allocation.height;
 593
 594   if (tree != tree->root_tree)
 595     {
 596       item = GTK_TREE_ITEM (tree->tree_owner);
 597       tree = GTK_TREE (GTK_WIDGET (tree)->parent);
 598       while (tree != tree->root_tree)
 599         {
 600           lx1 = lx2 -= tree->indent_value;
 601
 602           if (g_list_last (tree->children)->data != item)
 603             gdk_draw_line (widget->window, gc, lx1, ly1, lx2, ly2);
 604           item = GTK_TREE_ITEM (tree->tree_owner);
 605           tree = GTK_TREE (GTK_WIDGET (tree)->parent);
 606         }
 607     }
 608 }
 609
 610 static void
 611 gtk_tree_item_paint (GtkWidget    *widget,
 612                      GdkRectangle *area)
 613 {
 614   GtkBin *bin;
 615   GdkRectangle child_area, item_area;
 616   GtkTreeItem* tree_item;
 617
 618   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 619   g_return_if_fail (area != NULL);
 620
 621   /* FIXME: We should honor tree->view_mode, here - I think
 622    * the desired effect is that when the mode is VIEW_ITEM,
 623    * only the subitem is drawn as selected, not the entire
 624    * line. (Like the way that the tree in Windows Explorer
 625    * works).
 626    */
 627   if (GTK_WIDGET_DRAWABLE (widget))
 628     {
 629       bin = GTK_BIN (widget);
 630       tree_item = GTK_TREE_ITEM(widget);
 631
 632       if (widget->state == GTK_STATE_NORMAL)
 633         {
 634           gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 635           gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
 636         }
 637       else
 638         {
 639           if (!GTK_WIDGET_IS_SENSITIVE (widget))
 640             gtk_paint_flat_box(widget->style, widget->window,
 641                                widget->state, GTK_SHADOW_NONE,
 642                                area, widget, "treeitem",
 643                                0, 0, -1, -1);
 644           else
 645             gtk_paint_flat_box(widget->style, widget->window,
 646                                widget->state, GTK_SHADOW_ETCHED_OUT,
 647                                area, widget, "treeitem",
 648                                0, 0, -1, -1);
 649         }
 650
 651       /* draw left size of tree item */
 652       item_area.x = 0;
 653       item_area.y = 0;
 654       item_area.width = (tree_item->pixmaps_box->allocation.width + DEFAULT_DELTA +
 655                          GTK_TREE (widget->parent)->current_indent + 2);
 656       item_area.height = widget->allocation.height;
 657
 658
 659       if (gdk_rectangle_intersect(&item_area, area, &child_area))
 660         {
 661
 662           gtk_tree_item_draw_lines(widget);
 663
 664           if (tree_item->pixmaps_box &&
 665               GTK_WIDGET_VISIBLE(tree_item->pixmaps_box) &&
 666               gtk_widget_intersect (tree_item->pixmaps_box, area, &child_area))
 667             gtk_widget_draw (tree_item->pixmaps_box, &child_area);
 668         }
 669
 670       if (GTK_WIDGET_HAS_FOCUS (widget))
 671         gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 672                          NULL, widget, "treeitem",
 673                          0, 0,
 674                          widget->allocation.width,
 675                          widget->allocation.height);
 676
 677     }
 678 }
 679
 680 static gint
 681 gtk_tree_item_button_press (GtkWidget      *widget,
 682                             GdkEventButton *event)
 683 {
 684
 685   g_return_val_if_fail (GTK_IS_TREE_ITEM (widget), FALSE);
 686   g_return_val_if_fail (event != NULL, FALSE);
 687
 688   if (event->type == GDK_BUTTON_PRESS
 689         && GTK_WIDGET_IS_SENSITIVE(widget)
 690         && !GTK_WIDGET_HAS_FOCUS (widget))
 691       gtk_widget_grab_focus (widget);
 692
 693   return (event->type == GDK_BUTTON_PRESS && GTK_WIDGET_IS_SENSITIVE(widget));
 694 }
 695
 696 static void
 697 gtk_tree_item_expose_child (GtkWidget *child,
 698                             gpointer   client_data)
 699 {
 700   struct {
 701     GtkWidget *container;
 702     GdkEventExpose *event;
 703   } *data = client_data;
 704
 705   if (GTK_WIDGET_DRAWABLE (child) &&
 706       GTK_WIDGET_NO_WINDOW (child) &&
 707       (child->window == data->event->window))
 708     {
 709       GdkEvent *child_event = gdk_event_new (GDK_EXPOSE);
 710       child_event->expose = *data->event;
 711       g_object_ref (child_event->expose.window);
 712
 713       child_event->expose.region = gtk_widget_region_intersect (child,
 714                                                                 data->event->region);
 715       if (!gdk_region_empty (child_event->expose.region))
 716         {
 717           gdk_region_get_clipbox (child_event->expose.region, &child_event->expose.area);
 718           gtk_widget_send_expose (child, child_event);
 719         }
 720       gdk_event_free (child_event);
 721     }
 722 }
 723
 724 static gint
 725 gtk_tree_item_expose (GtkWidget      *widget,
 726                       GdkEventExpose *event)
 727 {
 728   struct {
 729     GtkWidget *container;
 730     GdkEventExpose *event;
 731   } data;
 732
 733   g_return_val_if_fail (GTK_IS_TREE_ITEM (widget), FALSE);
 734   g_return_val_if_fail (event != NULL, FALSE);
 735
 736   if (GTK_WIDGET_DRAWABLE (widget))
 737     {
 738       gtk_tree_item_paint (widget, &event->area);
 739
 740       data.container = widget;
 741       data.event = event;
 742
 743       gtk_container_forall (GTK_CONTAINER (widget),
 744                             gtk_tree_item_expose_child,
 745                             &data);
 746    }
 747
 748   return FALSE;
 749 }
 750
 751 static void
 752 gtk_real_tree_item_select (GtkItem *item)
 753 {
 754   GtkTreeItem *tree_item;
 755   GtkWidget *widget;
 756
 757   g_return_if_fail (GTK_IS_TREE_ITEM (item));
 758
 759   tree_item = GTK_TREE_ITEM (item);
 760   widget = GTK_WIDGET (item);
 761
 762   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 763
 764   if (!widget->parent || GTK_TREE (widget->parent)->view_mode == GTK_TREE_VIEW_LINE)
 765     gtk_widget_set_state (GTK_TREE_ITEM (item)->pixmaps_box, GTK_STATE_SELECTED);
 766 }
 767
 768 static void
 769 gtk_real_tree_item_deselect (GtkItem *item)
 770 {
 771   GtkTreeItem *tree_item;
 772   GtkWidget *widget;
 773
 774   g_return_if_fail (GTK_IS_TREE_ITEM (item));
 775
 776   tree_item = GTK_TREE_ITEM (item);
 777   widget = GTK_WIDGET (item);
 778
 779   gtk_widget_set_state (widget, GTK_STATE_NORMAL);
 780
 781   if (!widget->parent || GTK_TREE (widget->parent)->view_mode == GTK_TREE_VIEW_LINE)
 782     gtk_widget_set_state (tree_item->pixmaps_box, GTK_STATE_NORMAL);
 783 }
 784
 785 static void
 786 gtk_real_tree_item_toggle (GtkItem *item)
 787 {
 788   g_return_if_fail (GTK_IS_TREE_ITEM (item));
 789
 790   if(!GTK_WIDGET_IS_SENSITIVE(item))
 791     return;
 792
 793   if (GTK_WIDGET (item)->parent && GTK_IS_TREE (GTK_WIDGET (item)->parent))
 794     gtk_tree_select_child (GTK_TREE (GTK_WIDGET (item)->parent),
 795                            GTK_WIDGET (item));
 796   else
 797     {
 798       /* Should we really bother with this bit? A listitem not in a list?
 799        * -Johannes Keukelaar
 800        * yes, always be on the safe side!
 801        * -timj
 802        */
 803       if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 804         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 805       else
 806         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 807     }
 808 }
 809
 810 static void
 811 gtk_real_tree_item_expand (GtkTreeItem *tree_item)
 812 {
 813   GtkTree* tree;
 814
 815   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 816
 817   if (tree_item->subtree && !tree_item->expanded)
 818     {
 819       tree = GTK_TREE (GTK_WIDGET (tree_item)->parent);
 820
 821       /* hide subtree widget */
 822       gtk_widget_show (tree_item->subtree);
 823
 824       /* hide button '+' and show button '-' */
 825       if (tree_item->pixmaps_box)
 826         {
 827           gtk_container_remove (GTK_CONTAINER (tree_item->pixmaps_box),
 828                                 tree_item->plus_pix_widget);
 829           gtk_container_add (GTK_CONTAINER (tree_item->pixmaps_box),
 830                              tree_item->minus_pix_widget);
 831         }
 832       if (tree->root_tree)
 833         gtk_widget_queue_resize (GTK_WIDGET (tree->root_tree));
 834       tree_item->expanded = TRUE;
 835     }
 836 }
 837
 838 static void
 839 gtk_real_tree_item_collapse (GtkTreeItem *tree_item)
 840 {
 841   GtkTree* tree;
 842
 843   g_return_if_fail (GTK_IS_TREE_ITEM (tree_item));
 844
 845   if (tree_item->subtree && tree_item->expanded)
 846     {
 847       tree = GTK_TREE (GTK_WIDGET (tree_item)->parent);
 848
 849       /* hide subtree widget */
 850       gtk_widget_hide (tree_item->subtree);
 851
 852       /* hide button '-' and show button '+' */
 853       if (tree_item->pixmaps_box)
 854         {
 855           gtk_container_remove (GTK_CONTAINER (tree_item->pixmaps_box),
 856                                 tree_item->minus_pix_widget);
 857           gtk_container_add (GTK_CONTAINER (tree_item->pixmaps_box),
 858                              tree_item->plus_pix_widget);
 859         }
 860       if (tree->root_tree)
 861         gtk_widget_queue_resize (GTK_WIDGET (tree->root_tree));
 862       tree_item->expanded = FALSE;
 863     }
 864 }
 865
 866 static void
 867 gtk_tree_item_destroy (GtkObject *object)
 868 {
 869   GtkTreeItem* item;
 870   GtkWidget* child;
 871
 872   g_return_if_fail (GTK_IS_TREE_ITEM (object));
 873
 874 #ifdef TREE_DEBUG
 875   g_message("+ gtk_tree_item_destroy [object %#x]\n", (int)object);
 876 #endif /* TREE_DEBUG */
 877
 878   item = GTK_TREE_ITEM(object);
 879
 880   /* free sub tree if it exist */
 881   child = item->subtree;
 882   if (child)
 883     {
 884       gtk_widget_ref (child);
 885       gtk_widget_unparent (child);
 886       gtk_widget_destroy (child);
 887       gtk_widget_unref (child);
 888       item->subtree = NULL;
 889     }
 890
 891   /* free pixmaps box */
 892   child = item->pixmaps_box;
 893   if (child)
 894     {
 895       gtk_widget_ref (child);
 896       gtk_widget_unparent (child);
 897       gtk_widget_destroy (child);
 898       gtk_widget_unref (child);
 899       item->pixmaps_box = NULL;
 900     }
 901
 902
 903   /* destroy plus pixmap */
 904   if (item->plus_pix_widget)
 905     {
 906       gtk_widget_destroy (item->plus_pix_widget);
 907       gtk_widget_unref (item->plus_pix_widget);
 908       item->plus_pix_widget = NULL;
 909     }
 910
 911   /* destroy minus pixmap */
 912   if (item->minus_pix_widget)
 913     {
 914       gtk_widget_destroy (item->minus_pix_widget);
 915       gtk_widget_unref (item->minus_pix_widget);
 916       item->minus_pix_widget = NULL;
 917     }
 918
 919   /* By removing the pixmaps here, and not in unrealize, we depend on
 920    * the fact that a widget can never change colormap or visual.
 921    */
 922   gtk_tree_item_remove_pixmaps (item);
 923
 924   GTK_OBJECT_CLASS (parent_class)->destroy (object);
 925
 926 #ifdef TREE_DEBUG
 927   g_message("- gtk_tree_item_destroy\n");
 928 #endif /* TREE_DEBUG */
 929 }
 930
 931 void
 932 gtk_tree_item_remove_subtree (GtkTreeItem* item)
 933 {
 934   g_return_if_fail (GTK_IS_TREE_ITEM(item));
 935   g_return_if_fail (item->subtree != NULL);
 936
 937   if (GTK_TREE (item->subtree)->children)
 938     {
 939       /* The following call will remove the children and call
 940        * gtk_tree_item_remove_subtree() again. So we are done.
 941        */
 942       gtk_tree_remove_items (GTK_TREE (item->subtree),
 943                              GTK_TREE (item->subtree)->children);
 944       return;
 945     }
 946
 947   if (GTK_WIDGET_MAPPED (item->subtree))
 948     gtk_widget_unmap (item->subtree);
 949
 950   gtk_widget_unparent (item->subtree);
 951
 952   if (item->pixmaps_box)
 953     gtk_widget_hide (item->pixmaps_box);
 954
 955   item->subtree = NULL;
 956
 957   if (item->expanded)
 958     {
 959       item->expanded = FALSE;
 960       if (item->pixmaps_box)
 961         {
 962           gtk_container_remove (GTK_CONTAINER (item->pixmaps_box),
 963                                 item->minus_pix_widget);
 964           gtk_container_add (GTK_CONTAINER (item->pixmaps_box),
 965                              item->plus_pix_widget);
 966         }
 967     }
 968 }
 969
 970 static void
 971 gtk_tree_item_map (GtkWidget *widget)
 972 {
 973   GtkBin *bin;
 974   GtkTreeItem* item;
 975
 976   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
 977
 978   bin = GTK_BIN (widget);
 979   item = GTK_TREE_ITEM(widget);
 980
 981   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 982
 983   if(item->pixmaps_box &&
 984      GTK_WIDGET_VISIBLE (item->pixmaps_box) &&
 985      !GTK_WIDGET_MAPPED (item->pixmaps_box))
 986     gtk_widget_map (item->pixmaps_box);
 987
 988   if (bin->child &&
 989       GTK_WIDGET_VISIBLE (bin->child) &&
 990       !GTK_WIDGET_MAPPED (bin->child))
 991     gtk_widget_map (bin->child);
 992
 993   gdk_window_show (widget->window);
 994 }
 995
 996 static void
 997 gtk_tree_item_unmap (GtkWidget *widget)
 998 {
 999   GtkBin *bin;
1000   GtkTreeItem* item;
1001
1002   g_return_if_fail (GTK_IS_TREE_ITEM (widget));
1003
1004   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
1005   bin = GTK_BIN (widget);
1006   item = GTK_TREE_ITEM(widget);
1007
1008   gdk_window_hide (widget->window);
1009
1010   if(item->pixmaps_box &&
1011      GTK_WIDGET_VISIBLE (item->pixmaps_box) &&
1012      GTK_WIDGET_MAPPED (item->pixmaps_box))
1013     gtk_widget_unmap (bin->child);
1014
1015   if (bin->child &&
1016       GTK_WIDGET_VISIBLE (bin->child) &&
1017       GTK_WIDGET_MAPPED (bin->child))
1018     gtk_widget_unmap (bin->child);
1019 }
1020
1021 static void
1022 gtk_tree_item_forall (GtkContainer *container,
1023                       gboolean      include_internals,
1024                       GtkCallback   callback,
1025                       gpointer      callback_data)
1026 {
1027   GtkBin *bin;
1028   GtkTreeItem *tree_item;
1029
1030   g_return_if_fail (GTK_IS_TREE_ITEM (container));
1031   g_return_if_fail (callback != NULL);
1032
1033   bin = GTK_BIN (container);
1034   tree_item = GTK_TREE_ITEM (container);
1035
1036   if (bin->child)
1037     (* callback) (bin->child, callback_data);
1038   if (include_internals && tree_item->subtree)
1039     (* callback) (tree_item->subtree, callback_data);
1040   if (include_internals && tree_item->pixmaps_box)
1041     (* callback) (tree_item->pixmaps_box, callback_data);
1042 }
1043
1044 #define __GTK_TREE_ITEM_C__
1045 #include "gtkaliasdef.c"