helm/DEVEL/lablgtk/lablgtk_20000829-0.1.0/applications/radtest/gtktreeitem2.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-1999.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include <gtk/gtklabel.h>
  28 #include "gtktree2.h"
  29 #include "gtktreeitem2.h"
  30 #include <gtk/gtkeventbox.h>
  31 #include <gtk/gtkpixmap.h>
  32 #include <gtk/gtkmain.h>
  33 #include <gtk/gtksignal.h>
  34
  35 #include "tree_plus.xpm"
  36 #include "tree_minus.xpm"
  37
  38 #define DEFAULT_DELTA 9
  39
  40 enum {
  41   COLLAPSE_TREE,
  42   EXPAND_TREE,
  43   LAST_SIGNAL
  44 };
  45
  46 typedef struct _GtkTree2Pixmaps GtkTree2Pixmaps;
  47
  48 struct _GtkTree2Pixmaps {
  49   gint refcount;
  50   GdkColormap *colormap;
  51
  52   GdkPixmap *pixmap_plus;
  53   GdkPixmap *pixmap_minus;
  54   GdkBitmap *mask_plus;
  55   GdkBitmap *mask_minus;
  56 };
  57
  58 static GList *pixmaps = NULL;
  59
  60 static void gtk_tree_item2_class_init (GtkTreeItem2Class *klass);
  61 static void gtk_tree_item2_init       (GtkTreeItem2      *tree_item);
  62 static void gtk_tree_item2_realize       (GtkWidget        *widget);
  63 static void gtk_tree_item2_size_request  (GtkWidget        *widget,
  64                                          GtkRequisition   *requisition);
  65 static void gtk_tree_item2_size_allocate (GtkWidget        *widget,
  66                                          GtkAllocation    *allocation);
  67 static void gtk_tree_item2_draw          (GtkWidget        *widget,
  68                                          GdkRectangle     *area);
  69 static void gtk_tree_item2_draw_focus    (GtkWidget        *widget);
  70 static void gtk_tree_item2_paint         (GtkWidget        *widget,
  71                                          GdkRectangle     *area);
  72 static gint gtk_tree_item2_button_press  (GtkWidget        *widget,
  73                                          GdkEventButton   *event);
  74 static gint gtk_tree_item2_expose        (GtkWidget        *widget,
  75                                          GdkEventExpose   *event);
  76 static gint gtk_tree_item2_focus_in      (GtkWidget        *widget,
  77                                          GdkEventFocus    *event);
  78 static gint gtk_tree_item2_focus_out     (GtkWidget        *widget,
  79                                          GdkEventFocus    *event);
  80 static void gtk_tree_item2_forall        (GtkContainer    *container,
  81                                          gboolean         include_internals,
  82                                          GtkCallback      callback,
  83                                          gpointer         callback_data);
  84
  85 static void gtk_real_tree_item2_select   (GtkItem          *item);
  86 static void gtk_real_tree_item2_deselect (GtkItem          *item);
  87 static void gtk_real_tree_item2_toggle   (GtkItem          *item);
  88 static void gtk_real_tree_item2_expand   (GtkTreeItem2      *item);
  89 static void gtk_real_tree_item2_collapse (GtkTreeItem2      *item);
  90 static void gtk_real_tree_item2_expand   (GtkTreeItem2      *item);
  91 static void gtk_real_tree_item2_collapse (GtkTreeItem2      *item);
  92 static void gtk_tree_item2_destroy        (GtkObject *object);
  93 static void gtk_tree_item2_subtree_button_click (GtkWidget *widget);
  94 static void gtk_tree_item2_subtree_button_changed_state (GtkWidget *widget);
  95
  96 static void gtk_tree_item2_map(GtkWidget*);
  97 static void gtk_tree_item2_unmap(GtkWidget*);
  98
  99 static void gtk_tree_item2_add_pixmaps    (GtkTreeItem2       *tree_item);
 100 static void gtk_tree_item2_remove_pixmaps (GtkTreeItem2       *tree_item);
 101
 102 static GtkItemClass *parent_class = NULL;
 103 static guint tree_item_signals[LAST_SIGNAL] = { 0 };
 104
 105 GtkType
 106 gtk_tree_item2_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 (GtkTreeItem2),
 116         sizeof (GtkTreeItem2Class),
 117         (GtkClassInitFunc) gtk_tree_item2_class_init,
 118         (GtkObjectInitFunc) gtk_tree_item2_init,
 119         /* reserved_1 */ NULL,
 120         /* reserved_2 */ NULL,
 121         (GtkClassInitFunc) NULL,
 122       };
 123
 124       tree_item_type = gtk_type_unique (gtk_item_get_type (), &tree_item_info);
 125     }
 126
 127   return tree_item_type;
 128 }
 129
 130 static void
 131 gtk_tree_item2_class_init (GtkTreeItem2Class *class)
 132 {
 133   GtkObjectClass *object_class;
 134   GtkWidgetClass *widget_class;
 135   GtkContainerClass *container_class;
 136   GtkItemClass *item_class;
 137
 138   object_class = (GtkObjectClass*) class;
 139   widget_class = (GtkWidgetClass*) class;
 140   item_class = (GtkItemClass*) class;
 141   container_class = (GtkContainerClass*) class;
 142
 143   parent_class = gtk_type_class (gtk_item_get_type ());
 144
 145   tree_item_signals[EXPAND_TREE] =
 146     gtk_signal_new ("expand",
 147                     GTK_RUN_FIRST,
 148                     object_class->type,
 149                     GTK_SIGNAL_OFFSET (GtkTreeItem2Class, expand),
 150                     gtk_marshal_NONE__NONE,
 151                     GTK_TYPE_NONE, 0);
 152   tree_item_signals[COLLAPSE_TREE] =
 153     gtk_signal_new ("collapse",
 154                     GTK_RUN_FIRST,
 155                     object_class->type,
 156                     GTK_SIGNAL_OFFSET (GtkTreeItem2Class, collapse),
 157                     gtk_marshal_NONE__NONE,
 158                     GTK_TYPE_NONE, 0);
 159
 160   gtk_object_class_add_signals (object_class, tree_item_signals, LAST_SIGNAL);
 161
 162   object_class->destroy = gtk_tree_item2_destroy;
 163
 164   widget_class->realize = gtk_tree_item2_realize;
 165   widget_class->size_request = gtk_tree_item2_size_request;
 166   widget_class->size_allocate = gtk_tree_item2_size_allocate;
 167   widget_class->draw = gtk_tree_item2_draw;
 168   widget_class->draw_focus = gtk_tree_item2_draw_focus;
 169   widget_class->button_press_event = gtk_tree_item2_button_press;
 170   widget_class->expose_event = gtk_tree_item2_expose;
 171   widget_class->focus_in_event = gtk_tree_item2_focus_in;
 172   widget_class->focus_out_event = gtk_tree_item2_focus_out;
 173   widget_class->map = gtk_tree_item2_map;
 174   widget_class->unmap = gtk_tree_item2_unmap;
 175
 176   container_class->forall = gtk_tree_item2_forall;
 177
 178   item_class->select = gtk_real_tree_item2_select;
 179   item_class->deselect = gtk_real_tree_item2_deselect;
 180   item_class->toggle = gtk_real_tree_item2_toggle;
 181
 182   class->expand = gtk_real_tree_item2_expand;
 183   class->collapse = gtk_real_tree_item2_collapse;
 184 }
 185
 186 /* callback for event box mouse event */
 187 static void
 188 gtk_tree_item2_subtree_button_click (GtkWidget *widget)
 189 {
 190   GtkTreeItem2* item;
 191
 192   g_return_if_fail (widget != NULL);
 193   g_return_if_fail (GTK_IS_EVENT_BOX (widget));
 194
 195   item = (GtkTreeItem2*) gtk_object_get_user_data (GTK_OBJECT (widget));
 196   if (!GTK_WIDGET_IS_SENSITIVE (item))
 197     return;
 198
 199   if (item->expanded)
 200     gtk_tree_item2_collapse (item);
 201   else
 202     gtk_tree_item2_expand (item);
 203 }
 204
 205 /* callback for event box state changed */
 206 static void
 207 gtk_tree_item2_subtree_button_changed_state (GtkWidget *widget)
 208 {
 209   g_return_if_fail (widget != NULL);
 210   g_return_if_fail (GTK_IS_EVENT_BOX (widget));
 211
 212   if (GTK_WIDGET_VISIBLE (widget))
 213     {
 214
 215       if (widget->state == GTK_STATE_NORMAL)
 216         gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
 217       else
 218         gdk_window_set_background (widget->window, &widget->style->bg[widget->state]);
 219
 220       if (GTK_WIDGET_DRAWABLE (widget))
 221         gdk_window_clear_area (widget->window, 0, 0,
 222                                widget->allocation.width, widget->allocation.height);
 223     }
 224 }
 225
 226 static void
 227 gtk_tree_item2_init (GtkTreeItem2 *tree_item)
 228 {
 229   GtkWidget *eventbox, *pixmapwid;
 230
 231   g_return_if_fail (tree_item != NULL);
 232   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 233
 234   tree_item->expanded = FALSE;
 235   tree_item->subtree = NULL;
 236   GTK_WIDGET_SET_FLAGS (tree_item, GTK_CAN_FOCUS);
 237
 238   /* create an event box containing one pixmaps */
 239   eventbox = gtk_event_box_new();
 240   gtk_widget_set_events (eventbox, GDK_BUTTON_PRESS_MASK);
 241   gtk_signal_connect(GTK_OBJECT(eventbox), "state_changed",
 242                      (GtkSignalFunc)gtk_tree_item2_subtree_button_changed_state,
 243                      (gpointer)NULL);
 244   gtk_signal_connect(GTK_OBJECT(eventbox), "realize",
 245                      (GtkSignalFunc)gtk_tree_item2_subtree_button_changed_state,
 246                      (gpointer)NULL);
 247 /* HF inutile
 248   gtk_signal_connect(GTK_OBJECT(eventbox), "button_press_event",
 249                      (GtkSignalFunc)gtk_tree_item2_subtree_button_click,
 250                      (gpointer)NULL);
 251 */
 252   gtk_object_set_user_data(GTK_OBJECT(eventbox), tree_item);
 253   tree_item->pixmaps_box = eventbox;
 254
 255   /* create pixmap for button '+' */
 256   pixmapwid = gtk_type_new (gtk_pixmap_get_type ());
 257   if (!tree_item->expanded)
 258     gtk_container_add (GTK_CONTAINER (eventbox), pixmapwid);
 259   gtk_widget_show (pixmapwid);
 260   tree_item->plus_pix_widget = pixmapwid;
 261   gtk_widget_ref (tree_item->plus_pix_widget);
 262   gtk_object_sink (GTK_OBJECT (tree_item->plus_pix_widget));
 263
 264   /* create pixmap for button '-' */
 265   pixmapwid = gtk_type_new (gtk_pixmap_get_type ());
 266   if (tree_item->expanded)
 267     gtk_container_add (GTK_CONTAINER (eventbox), pixmapwid);
 268   gtk_widget_show (pixmapwid);
 269   tree_item->minus_pix_widget = pixmapwid;
 270   gtk_widget_ref (tree_item->minus_pix_widget);
 271   gtk_object_sink (GTK_OBJECT (tree_item->minus_pix_widget));
 272
 273   gtk_widget_set_parent (eventbox, GTK_WIDGET (tree_item));
 274 }
 275
 276
 277 GtkWidget*
 278 gtk_tree_item2_new (void)
 279 {
 280   GtkWidget *tree_item;
 281
 282   tree_item = GTK_WIDGET (gtk_type_new (gtk_tree_item2_get_type ()));
 283
 284   return tree_item;
 285 }
 286
 287 GtkWidget*
 288 gtk_tree_item2_new_with_label (gchar *label)
 289 {
 290   GtkWidget *tree_item;
 291   GtkWidget *label_widget;
 292
 293   tree_item = gtk_tree_item2_new ();
 294   label_widget = gtk_label_new (label);
 295   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 296
 297   gtk_container_add (GTK_CONTAINER (tree_item), label_widget);
 298   gtk_widget_show (label_widget);
 299
 300
 301   return tree_item;
 302 }
 303
 304 void
 305 gtk_tree_item2_set_subtree (GtkTreeItem2 *tree_item,
 306                            GtkWidget   *subtree)
 307 {
 308   g_return_if_fail (tree_item != NULL);
 309   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 310   g_return_if_fail (subtree != NULL);
 311   g_return_if_fail (GTK_IS_TREE2 (subtree));
 312
 313   if (tree_item->subtree)
 314     {
 315       g_warning("there is already a subtree for this tree item\n");
 316       return;
 317     }
 318
 319   tree_item->subtree = subtree;
 320   GTK_TREE2 (subtree)->tree_owner = GTK_WIDGET (tree_item);
 321
 322   /* show subtree button */
 323   if (tree_item->pixmaps_box)
 324     gtk_widget_show (tree_item->pixmaps_box);
 325
 326   if (tree_item->expanded)
 327     gtk_widget_show (subtree);
 328   else
 329     gtk_widget_hide (subtree);
 330
 331   gtk_widget_set_parent (subtree, GTK_WIDGET (tree_item)->parent);
 332
 333   if (GTK_WIDGET_REALIZED (subtree->parent))
 334     gtk_widget_realize (subtree);
 335
 336   if (GTK_WIDGET_VISIBLE (subtree->parent) && GTK_WIDGET_VISIBLE (subtree))
 337     {
 338       if (GTK_WIDGET_MAPPED (subtree->parent))
 339         gtk_widget_map (subtree);
 340
 341       gtk_widget_queue_resize (subtree);
 342     }
 343 }
 344
 345 void
 346 gtk_tree_item2_select (GtkTreeItem2 *tree_item)
 347 {
 348   g_return_if_fail (tree_item != NULL);
 349   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 350
 351   gtk_item_select (GTK_ITEM (tree_item));
 352 }
 353
 354 void
 355 gtk_tree_item2_deselect (GtkTreeItem2 *tree_item)
 356 {
 357   g_return_if_fail (tree_item != NULL);
 358   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 359
 360   gtk_item_deselect (GTK_ITEM (tree_item));
 361 }
 362
 363 void
 364 gtk_tree_item2_expand (GtkTreeItem2 *tree_item)
 365 {
 366   g_return_if_fail (tree_item != NULL);
 367   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 368
 369   gtk_signal_emit (GTK_OBJECT (tree_item), tree_item_signals[EXPAND_TREE], NULL);
 370 }
 371
 372 void
 373 gtk_tree_item2_collapse (GtkTreeItem2 *tree_item)
 374 {
 375   g_return_if_fail (tree_item != NULL);
 376   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 377
 378   gtk_signal_emit (GTK_OBJECT (tree_item), tree_item_signals[COLLAPSE_TREE], NULL);
 379 }
 380
 381 static void
 382 gtk_tree_item2_add_pixmaps (GtkTreeItem2 *tree_item)
 383 {
 384   GList *tmp_list;
 385   GdkColormap *colormap;
 386   GtkTree2Pixmaps *pixmap_node = NULL;
 387
 388   g_return_if_fail (tree_item != NULL);
 389   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 390
 391   if (tree_item->pixmaps)
 392     return;
 393
 394   colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_item));
 395
 396   tmp_list = pixmaps;
 397   while (tmp_list)
 398     {
 399       pixmap_node = (GtkTree2Pixmaps *)tmp_list->data;
 400
 401       if (pixmap_node->colormap == colormap)
 402         break;
 403
 404       tmp_list = tmp_list->next;
 405     }
 406
 407   if (tmp_list)
 408     {
 409       pixmap_node->refcount++;
 410       tree_item->pixmaps = tmp_list;
 411     }
 412   else
 413     {
 414       pixmap_node = g_new (GtkTree2Pixmaps, 1);
 415
 416       pixmap_node->colormap = colormap;
 417       gdk_colormap_ref (colormap);
 418
 419       pixmap_node->refcount = 1;
 420
 421       /* create pixmaps for plus icon */
 422       pixmap_node->pixmap_plus =
 423         gdk_pixmap_create_from_xpm_d (GTK_WIDGET (tree_item)->window,
 424                                       &pixmap_node->mask_plus,
 425                                       NULL,
 426                                       tree_plus);
 427
 428       /* create pixmaps for minus icon */
 429       pixmap_node->pixmap_minus =
 430         gdk_pixmap_create_from_xpm_d (GTK_WIDGET (tree_item)->window,
 431                                       &pixmap_node->mask_minus,
 432                                       NULL,
 433                                       tree_minus);
 434
 435       tree_item->pixmaps = pixmaps = g_list_prepend (pixmaps, pixmap_node);
 436     }
 437
 438   gtk_pixmap_set (GTK_PIXMAP (tree_item->plus_pix_widget),
 439                   pixmap_node->pixmap_plus, pixmap_node->mask_plus);
 440   gtk_pixmap_set (GTK_PIXMAP (tree_item->minus_pix_widget),
 441                   pixmap_node->pixmap_minus, pixmap_node->mask_minus);
 442 }
 443
 444 static void
 445 gtk_tree_item2_remove_pixmaps (GtkTreeItem2 *tree_item)
 446 {
 447   g_return_if_fail (tree_item != NULL);
 448   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 449
 450   if (tree_item->pixmaps)
 451     {
 452       GtkTree2Pixmaps *pixmap_node = (GtkTree2Pixmaps *)tree_item->pixmaps->data;
 453
 454       g_assert (pixmap_node->refcount > 0);
 455
 456       if (--pixmap_node->refcount == 0)
 457         {
 458           gdk_colormap_unref (pixmap_node->colormap);
 459           gdk_pixmap_unref (pixmap_node->pixmap_plus);
 460           gdk_bitmap_unref (pixmap_node->mask_plus);
 461           gdk_pixmap_unref (pixmap_node->pixmap_minus);
 462           gdk_bitmap_unref (pixmap_node->mask_minus);
 463
 464           pixmaps = g_list_remove_link (pixmaps, tree_item->pixmaps);
 465           g_list_free_1 (tree_item->pixmaps);
 466           g_free (pixmap_node);
 467         }
 468
 469       tree_item->pixmaps = NULL;
 470     }
 471 }
 472
 473 static void
 474 gtk_tree_item2_realize (GtkWidget *widget)
 475 {
 476   g_return_if_fail (widget != NULL);
 477   g_return_if_fail (GTK_IS_TREE_ITEM2 (widget));
 478
 479   if (GTK_WIDGET_CLASS (parent_class)->realize)
 480     (* GTK_WIDGET_CLASS (parent_class)->realize) (widget);
 481
 482   gdk_window_set_background (widget->window,
 483                              &widget->style->base[GTK_STATE_NORMAL]);
 484
 485   gtk_tree_item2_add_pixmaps (GTK_TREE_ITEM2 (widget));
 486 }
 487
 488 static void
 489 gtk_tree_item2_size_request (GtkWidget      *widget,
 490                             GtkRequisition *requisition)
 491 {
 492   GtkBin *bin;
 493   GtkTreeItem2* item;
 494   GtkRequisition child_requisition;
 495
 496   g_return_if_fail (widget != NULL);
 497   g_return_if_fail (GTK_IS_TREE_ITEM2 (widget));
 498   g_return_if_fail (requisition != NULL);
 499
 500   bin = GTK_BIN (widget);
 501   item = GTK_TREE_ITEM2(widget);
 502
 503   requisition->width = (GTK_CONTAINER (widget)->border_width +
 504                         widget->style->klass->xthickness) * 2;
 505   requisition->height = GTK_CONTAINER (widget)->border_width * 2;
 506
 507   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 508     {
 509       GtkRequisition pix_requisition;
 510
 511       gtk_widget_size_request (bin->child, &child_requisition);
 512
 513       requisition->width += child_requisition.width;
 514
 515       gtk_widget_size_request (item->pixmaps_box,
 516                                &pix_requisition);
 517       requisition->width += pix_requisition.width + DEFAULT_DELTA +
 518         GTK_TREE2 (widget->parent)->current_indent;
 519
 520       requisition->height += MAX (child_requisition.height,
 521                                   pix_requisition.height);
 522     }
 523 }
 524
 525 static void
 526 gtk_tree_item2_size_allocate (GtkWidget     *widget,
 527                              GtkAllocation *allocation)
 528 {
 529   GtkBin *bin;
 530   GtkTreeItem2* item;
 531   GtkAllocation child_allocation;
 532   guint border_width;
 533   int temp;
 534
 535   g_return_if_fail (widget != NULL);
 536   g_return_if_fail (GTK_IS_TREE_ITEM2 (widget));
 537   g_return_if_fail (allocation != NULL);
 538
 539   widget->allocation = *allocation;
 540   if (GTK_WIDGET_REALIZED (widget))
 541     gdk_window_move_resize (widget->window,
 542                             allocation->x, allocation->y,
 543                             allocation->width, allocation->height);
 544
 545   bin = GTK_BIN (widget);
 546   item = GTK_TREE_ITEM2(widget);
 547
 548   if (bin->child)
 549     {
 550       border_width = (GTK_CONTAINER (widget)->border_width +
 551                       widget->style->klass->xthickness);
 552
 553       child_allocation.x = border_width + GTK_TREE2(widget->parent)->current_indent;
 554       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 555
 556       child_allocation.width = item->pixmaps_box->requisition.width;
 557       child_allocation.height = item->pixmaps_box->requisition.height;
 558
 559       temp = allocation->height - child_allocation.height;
 560       child_allocation.y += ( temp / 2 ) + ( temp % 2 );
 561
 562       gtk_widget_size_allocate (item->pixmaps_box, &child_allocation);
 563
 564       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 565       child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 566       child_allocation.x += item->pixmaps_box->requisition.width+DEFAULT_DELTA;
 567
 568       child_allocation.width =
 569         MAX (1, (gint)allocation->width - ((gint)child_allocation.x + border_width));
 570
 571       gtk_widget_size_allocate (bin->child, &child_allocation);
 572     }
 573 }
 574
 575 static void
 576 gtk_tree_item2_draw_lines (GtkWidget *widget)
 577 {
 578   GtkTreeItem2* item;
 579   GtkTree2* tree;
 580   guint lx1, ly1, lx2, ly2;
 581
 582   g_return_if_fail (widget != NULL);
 583   g_return_if_fail (GTK_IS_TREE_ITEM2 (widget));
 584
 585   item = GTK_TREE_ITEM2(widget);
 586   tree = GTK_TREE2(widget->parent);
 587
 588   /* draw vertical line */
 589   lx1 = item->pixmaps_box->allocation.width;
 590   lx1 = lx2 = ((lx1 / 2) + (lx1 % 2) +
 591                GTK_CONTAINER (widget)->border_width + 1 + tree->current_indent);
 592   ly1 = 0;
 593   ly2 = widget->allocation.height;
 594
 595   if (g_list_last (tree->children)->data == widget)
 596     ly2 = (ly2 / 2) + (ly2 % 2);
 597
 598   if (tree != tree->root_tree)
 599     gdk_draw_line (widget->window, widget->style->black_gc, lx1, ly1, lx2, ly2);
 600
 601   /* draw vertical line for subtree connecting */
 602   if(g_list_last(tree->children)->data != (gpointer)widget)
 603     ly2 = (ly2 / 2) + (ly2 % 2);
 604
 605   lx2 += DEFAULT_DELTA;
 606
 607   if (item->subtree && item->expanded)
 608     gdk_draw_line (widget->window, widget->style->black_gc,
 609                    lx2, ly2, lx2, widget->allocation.height);
 610
 611   /* draw horizontal line */
 612   ly1 = ly2;
 613   lx2 += 2;
 614
 615   gdk_draw_line (widget->window, widget->style->black_gc,
 616                  lx1, ly1, lx2, ly2);
 617
 618   lx2 -= DEFAULT_DELTA+2;
 619   ly1 = 0;
 620   ly2 = widget->allocation.height;
 621
 622   if (tree != tree->root_tree)
 623     {
 624       item = GTK_TREE_ITEM2 (tree->tree_owner);
 625       tree = GTK_TREE2 (GTK_WIDGET (tree)->parent);
 626       while (tree != tree->root_tree)
 627         {
 628           lx1 = lx2 -= tree->indent_value;
 629
 630           if (g_list_last (tree->children)->data != item)
 631             gdk_draw_line (widget->window, widget->style->black_gc, lx1, ly1, lx2, ly2);
 632           item = GTK_TREE_ITEM2 (tree->tree_owner);
 633           tree = GTK_TREE2 (GTK_WIDGET (tree)->parent);
 634         }
 635     }
 636 }
 637
 638 static void
 639 gtk_tree_item2_paint (GtkWidget    *widget,
 640                      GdkRectangle *area)
 641 {
 642   GtkBin *bin;
 643   GdkRectangle child_area, item_area;
 644   GtkTreeItem2* tree_item;
 645
 646   g_return_if_fail (widget != NULL);
 647   g_return_if_fail (GTK_IS_TREE_ITEM2 (widget));
 648   g_return_if_fail (area != NULL);
 649
 650   if (GTK_WIDGET_DRAWABLE (widget))
 651     {
 652       bin = GTK_BIN (widget);
 653       tree_item = GTK_TREE_ITEM2(widget);
 654
 655       if (widget->state == GTK_STATE_NORMAL)
 656         {
 657           gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 658           gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
 659         }
 660       else
 661         {
 662           if (!GTK_WIDGET_IS_SENSITIVE (widget))
 663             gtk_paint_flat_box(widget->style, widget->window,
 664                                widget->state, GTK_STATE_INSENSITIVE,
 665                                area, widget, "treeitem",
 666                                0, 0, -1, -1);
 667           else
 668             gtk_paint_flat_box(widget->style, widget->window,
 669                                widget->state, GTK_SHADOW_ETCHED_OUT,
 670                                area, widget, "treeitem",
 671                                0, 0, -1, -1);
 672         }
 673
 674       /* draw left size of tree item */
 675       item_area.x = 0;
 676       item_area.y = 0;
 677       item_area.width = (tree_item->pixmaps_box->allocation.width + DEFAULT_DELTA +
 678                          GTK_TREE2 (widget->parent)->current_indent + 2);
 679       item_area.height = widget->allocation.height;
 680
 681
 682       if (gdk_rectangle_intersect(&item_area, area, &child_area))
 683         {
 684
 685           gtk_tree_item2_draw_lines(widget);
 686
 687           if (tree_item->pixmaps_box &&
 688               GTK_WIDGET_VISIBLE(tree_item->pixmaps_box) &&
 689               gtk_widget_intersect (tree_item->pixmaps_box, area, &child_area))
 690             gtk_widget_draw (tree_item->pixmaps_box, &child_area);
 691         }
 692
 693       if (GTK_WIDGET_HAS_FOCUS (widget))
 694         gtk_paint_focus (widget->style, widget->window,
 695                          NULL, widget, "treeitem",
 696                          0, 0,
 697                          widget->allocation.width - 1,
 698                          widget->allocation.height - 1);
 699
 700     }
 701 }
 702
 703 static void
 704 gtk_tree_item2_draw (GtkWidget    *widget,
 705                     GdkRectangle *area)
 706 {
 707   GtkBin *bin;
 708   GdkRectangle child_area;
 709
 710   g_return_if_fail (widget != NULL);
 711   g_return_if_fail (GTK_IS_TREE_ITEM2 (widget));
 712   g_return_if_fail (area != NULL);
 713
 714   if (GTK_WIDGET_DRAWABLE (widget))
 715     {
 716       bin = GTK_BIN (widget);
 717
 718       gtk_tree_item2_paint (widget, area);
 719
 720       if (bin->child &&
 721           gtk_widget_intersect (bin->child, area, &child_area))
 722         gtk_widget_draw (bin->child, &child_area);
 723
 724     }
 725 }
 726
 727 static void
 728 gtk_tree_item2_draw_focus (GtkWidget *widget)
 729 {
 730   g_return_if_fail (widget != NULL);
 731   g_return_if_fail (GTK_IS_TREE_ITEM2 (widget));
 732
 733   gtk_widget_draw(widget, NULL);
 734 }
 735
 736 static gint
 737 gtk_tree_item2_button_press (GtkWidget      *widget,
 738                             GdkEventButton *event)
 739 {
 740 /* HF
 741   g_return_val_if_fail (widget != NULL, FALSE);
 742   g_return_val_if_fail (GTK_IS_TREE_ITEM2 (widget), FALSE);
 743   g_return_val_if_fail (event != NULL, FALSE);
 744
 745   if (event->type == GDK_BUTTON_PRESS
 746         && GTK_WIDGET_IS_SENSITIVE(widget)
 747         && !GTK_WIDGET_HAS_FOCUS (widget))
 748       gtk_widget_grab_focus (widget);
 749
 750   return FALSE;
 751
 752 */
 753 }
 754
 755 static gint
 756 gtk_tree_item2_expose (GtkWidget      *widget,
 757                       GdkEventExpose *event)
 758 {
 759   GdkEventExpose child_event;
 760   GtkBin *bin;
 761
 762   g_return_val_if_fail (widget != NULL, FALSE);
 763   g_return_val_if_fail (GTK_IS_TREE_ITEM2 (widget), FALSE);
 764   g_return_val_if_fail (event != NULL, FALSE);
 765
 766   if (GTK_WIDGET_DRAWABLE (widget))
 767     {
 768       bin = GTK_BIN (widget);
 769
 770       gtk_tree_item2_paint (widget, &event->area);
 771
 772       child_event = *event;
 773       if (bin->child && GTK_WIDGET_NO_WINDOW (bin->child) &&
 774           gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 775         gtk_widget_event (bin->child, (GdkEvent*) &child_event);
 776    }
 777
 778   return FALSE;
 779 }
 780
 781 static gint
 782 gtk_tree_item2_focus_in (GtkWidget     *widget,
 783                         GdkEventFocus *event)
 784 {
 785   g_return_val_if_fail (widget != NULL, FALSE);
 786   g_return_val_if_fail (GTK_IS_TREE_ITEM2 (widget), FALSE);
 787   g_return_val_if_fail (event != NULL, FALSE);
 788
 789   GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
 790   gtk_widget_draw_focus (widget);
 791
 792
 793   return FALSE;
 794 }
 795
 796 static gint
 797 gtk_tree_item2_focus_out (GtkWidget     *widget,
 798                          GdkEventFocus *event)
 799 {
 800   g_return_val_if_fail (widget != NULL, FALSE);
 801   g_return_val_if_fail (GTK_IS_TREE_ITEM2 (widget), FALSE);
 802   g_return_val_if_fail (event != NULL, FALSE);
 803
 804   GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
 805   gtk_widget_draw_focus (widget);
 806
 807
 808   return FALSE;
 809 }
 810
 811 static void
 812 gtk_real_tree_item2_select (GtkItem *item)
 813 {
 814   GtkTreeItem2 *tree_item;
 815   GtkWidget *widget;
 816
 817   g_return_if_fail (item != NULL);
 818   g_return_if_fail (GTK_IS_TREE_ITEM2 (item));
 819
 820   tree_item = GTK_TREE_ITEM2 (item);
 821   widget = GTK_WIDGET (item);
 822
 823   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 824
 825   if (!widget->parent || GTK_TREE2 (widget->parent)->view_mode == GTK_TREE2_VIEW_LINE)
 826     gtk_widget_set_state (GTK_TREE_ITEM2 (item)->pixmaps_box, GTK_STATE_SELECTED);
 827 }
 828
 829 static void
 830 gtk_real_tree_item2_deselect (GtkItem *item)
 831 {
 832   GtkTreeItem2 *tree_item;
 833   GtkWidget *widget;
 834
 835   g_return_if_fail (item != NULL);
 836   g_return_if_fail (GTK_IS_TREE_ITEM2 (item));
 837
 838   tree_item = GTK_TREE_ITEM2 (item);
 839   widget = GTK_WIDGET (item);
 840
 841   gtk_widget_set_state (widget, GTK_STATE_NORMAL);
 842
 843   if (!widget->parent || GTK_TREE2 (widget->parent)->view_mode == GTK_TREE2_VIEW_LINE)
 844     gtk_widget_set_state (tree_item->pixmaps_box, GTK_STATE_NORMAL);
 845 }
 846
 847 static void
 848 gtk_real_tree_item2_toggle (GtkItem *item)
 849 {
 850   g_return_if_fail (item != NULL);
 851   g_return_if_fail (GTK_IS_TREE_ITEM2 (item));
 852
 853   if(!GTK_WIDGET_IS_SENSITIVE(item))
 854     return;
 855
 856   if (GTK_WIDGET (item)->parent && GTK_IS_TREE2 (GTK_WIDGET (item)->parent))
 857     gtk_tree2_select_child (GTK_TREE2 (GTK_WIDGET (item)->parent),
 858                            GTK_WIDGET (item));
 859   else
 860     {
 861       /* Should we really bother with this bit? A listitem not in a list?
 862        * -Johannes Keukelaar
 863        * yes, always be on the safe side!
 864        * -timj
 865        */
 866       if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 867         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 868       else
 869         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 870     }
 871 }
 872
 873 static void
 874 gtk_real_tree_item2_expand (GtkTreeItem2 *tree_item)
 875 {
 876   GtkTree2* tree;
 877
 878   g_return_if_fail (tree_item != NULL);
 879   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 880
 881   if (tree_item->subtree && !tree_item->expanded)
 882     {
 883       tree = GTK_TREE2 (GTK_WIDGET (tree_item)->parent);
 884
 885       /* hide subtree widget */
 886       gtk_widget_show (tree_item->subtree);
 887
 888       /* hide button '+' and show button '-' */
 889       if (tree_item->pixmaps_box)
 890         {
 891           gtk_container_remove (GTK_CONTAINER (tree_item->pixmaps_box),
 892                                 tree_item->plus_pix_widget);
 893           gtk_container_add (GTK_CONTAINER (tree_item->pixmaps_box),
 894                              tree_item->minus_pix_widget);
 895         }
 896       if (tree->root_tree)
 897         gtk_widget_queue_resize (GTK_WIDGET (tree->root_tree));
 898       tree_item->expanded = TRUE;
 899     }
 900 }
 901
 902 static void
 903 gtk_real_tree_item2_collapse (GtkTreeItem2 *tree_item)
 904 {
 905   GtkTree2* tree;
 906
 907   g_return_if_fail (tree_item != NULL);
 908   g_return_if_fail (GTK_IS_TREE_ITEM2 (tree_item));
 909
 910   if (tree_item->subtree && tree_item->expanded)
 911     {
 912       tree = GTK_TREE2 (GTK_WIDGET (tree_item)->parent);
 913
 914       /* hide subtree widget */
 915       gtk_widget_hide (tree_item->subtree);
 916
 917       /* hide button '-' and show button '+' */
 918       if (tree_item->pixmaps_box)
 919         {
 920           gtk_container_remove (GTK_CONTAINER (tree_item->pixmaps_box),
 921                                 tree_item->minus_pix_widget);
 922           gtk_container_add (GTK_CONTAINER (tree_item->pixmaps_box),
 923                              tree_item->plus_pix_widget);
 924         }
 925       if (tree->root_tree)
 926         gtk_widget_queue_resize (GTK_WIDGET (tree->root_tree));
 927       tree_item->expanded = FALSE;
 928     }
 929 }
 930
 931 static void
 932 gtk_tree_item2_destroy (GtkObject *object)
 933 {
 934   GtkTreeItem2* item;
 935   GtkWidget* child;
 936
 937   g_return_if_fail (object != NULL);
 938   g_return_if_fail (GTK_IS_TREE_ITEM2 (object));
 939
 940 #ifdef TREE_DEBUG
 941   g_message("+ gtk_tree_item2_destroy [object %#x]\n", (int)object);
 942 #endif /* TREE_DEBUG */
 943
 944   item = GTK_TREE_ITEM2(object);
 945
 946   /* free sub tree if it exist */
 947   child = item->subtree;
 948   if (child)
 949     {
 950       gtk_widget_ref (child);
 951       gtk_widget_unparent (child);
 952       gtk_widget_destroy (child);
 953       gtk_widget_unref (child);
 954       item->subtree = NULL;
 955     }
 956
 957   /* free pixmaps box */
 958   child = item->pixmaps_box;
 959   if (child)
 960     {
 961       gtk_widget_ref (child);
 962       gtk_widget_unparent (child);
 963       gtk_widget_destroy (child);
 964       gtk_widget_unref (child);
 965       item->pixmaps_box = NULL;
 966     }
 967
 968
 969   /* destroy plus pixmap */
 970   if (item->plus_pix_widget)
 971     {
 972       gtk_widget_destroy (item->plus_pix_widget);
 973       gtk_widget_unref (item->plus_pix_widget);
 974       item->plus_pix_widget = NULL;
 975     }
 976
 977   /* destroy minus pixmap */
 978   if (item->minus_pix_widget)
 979     {
 980       gtk_widget_destroy (item->minus_pix_widget);
 981       gtk_widget_unref (item->minus_pix_widget);
 982       item->minus_pix_widget = NULL;
 983     }
 984
 985   /* By removing the pixmaps here, and not in unrealize, we depend on
 986    * the fact that a widget can never change colormap or visual.
 987    */
 988   gtk_tree_item2_remove_pixmaps (item);
 989
 990   GTK_OBJECT_CLASS (parent_class)->destroy (object);
 991
 992 #ifdef TREE_DEBUG
 993   g_message("- gtk_tree_item2_destroy\n");
 994 #endif /* TREE_DEBUG */
 995 }
 996
 997 void
 998 gtk_tree_item2_remove_subtree (GtkTreeItem2* item)
 999 {
1000   g_return_if_fail (item != NULL);
1001   g_return_if_fail (GTK_IS_TREE_ITEM2(item));
1002   g_return_if_fail (item->subtree != NULL);
1003
1004   if (GTK_TREE2 (item->subtree)->children)
1005     {
1006       /* The following call will remove the children and call
1007        * gtk_tree_item2_remove_subtree() again. So we are done.
1008        */
1009       gtk_tree2_remove_items (GTK_TREE2 (item->subtree),
1010                              GTK_TREE2 (item->subtree)->children);
1011       return;
1012     }
1013
1014   if (GTK_WIDGET_MAPPED (item->subtree))
1015     gtk_widget_unmap (item->subtree);
1016
1017   gtk_widget_unparent (item->subtree);
1018
1019   if (item->pixmaps_box)
1020     gtk_widget_hide (item->pixmaps_box);
1021
1022   item->subtree = NULL;
1023
1024   if (item->expanded)
1025     {
1026       item->expanded = FALSE;
1027       if (item->pixmaps_box)
1028         {
1029           gtk_container_remove (GTK_CONTAINER (item->pixmaps_box),
1030                                 item->minus_pix_widget);
1031           gtk_container_add (GTK_CONTAINER (item->pixmaps_box),
1032                              item->plus_pix_widget);
1033         }
1034     }
1035 }
1036
1037 static void
1038 gtk_tree_item2_map (GtkWidget *widget)
1039 {
1040   GtkBin *bin;
1041   GtkTreeItem2* item;
1042
1043   g_return_if_fail (widget != NULL);
1044   g_return_if_fail (GTK_IS_TREE_ITEM2 (widget));
1045
1046   bin = GTK_BIN (widget);
1047   item = GTK_TREE_ITEM2(widget);
1048
1049   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
1050
1051   if(item->pixmaps_box &&
1052      GTK_WIDGET_VISIBLE (item->pixmaps_box) &&
1053      !GTK_WIDGET_MAPPED (item->pixmaps_box))
1054     gtk_widget_map (item->pixmaps_box);
1055
1056   if (bin->child &&
1057       GTK_WIDGET_VISIBLE (bin->child) &&
1058       !GTK_WIDGET_MAPPED (bin->child))
1059     gtk_widget_map (bin->child);
1060
1061   gdk_window_show (widget->window);
1062 }
1063
1064 static void
1065 gtk_tree_item2_unmap (GtkWidget *widget)
1066 {
1067   GtkBin *bin;
1068   GtkTreeItem2* item;
1069
1070   g_return_if_fail (widget != NULL);
1071   g_return_if_fail (GTK_IS_TREE_ITEM2 (widget));
1072
1073   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
1074   bin = GTK_BIN (widget);
1075   item = GTK_TREE_ITEM2(widget);
1076
1077   gdk_window_hide (widget->window);
1078
1079   if(item->pixmaps_box &&
1080      GTK_WIDGET_VISIBLE (item->pixmaps_box) &&
1081      GTK_WIDGET_MAPPED (item->pixmaps_box))
1082     gtk_widget_unmap (bin->child);
1083
1084   if (bin->child &&
1085       GTK_WIDGET_VISIBLE (bin->child) &&
1086       GTK_WIDGET_MAPPED (bin->child))
1087     gtk_widget_unmap (bin->child);
1088 }
1089
1090 static void
1091 gtk_tree_item2_forall (GtkContainer *container,
1092                       gboolean      include_internals,
1093                       GtkCallback   callback,
1094                       gpointer      callback_data)
1095 {
1096   GtkBin *bin;
1097   GtkTreeItem2 *tree_item;
1098
1099   g_return_if_fail (container != NULL);
1100   g_return_if_fail (GTK_IS_TREE_ITEM2 (container));
1101   g_return_if_fail (callback != NULL);
1102
1103   bin = GTK_BIN (container);
1104   tree_item = GTK_TREE_ITEM2 (container);
1105
1106   if (bin->child)
1107     (* callback) (bin->child, callback_data);
1108 /*  if (include_internals && tree_item->subtree)
1109     (* callback) (tree_item->subtree, callback_data); */
1110 }