gtktreeview.c 107 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
/* gtktreeview.c
 * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */


#include "gtktreeview.h"
#include "gtkrbtree.h"
#include "gtktreeprivate.h"
#include "gtkcellrenderer.h"
#include "gtksignal.h"
#include "gtkmain.h"
#include "gtkbutton.h"
#include "gtkalignment.h"
#include "gtklabel.h"

#include <gdk/gdkkeysyms.h>


/* the width of the column resize windows */
#define TREE_VIEW_DRAG_WIDTH 6
#define TREE_VIEW_EXPANDER_WIDTH 14
#define TREE_VIEW_EXPANDER_HEIGHT 14
38 39
#define TREE_VIEW_VERTICAL_SEPARATOR 2
#define TREE_VIEW_HORIZONTAL_SEPARATOR 0
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55


typedef struct _GtkTreeViewChild GtkTreeViewChild;

struct _GtkTreeViewChild
{
  GtkWidget *widget;
  gint x;
  gint y;
};


static void     gtk_tree_view_init                 (GtkTreeView      *tree_view);
static void     gtk_tree_view_class_init           (GtkTreeViewClass *klass);

/* widget signals */
56
static void     gtk_tree_view_setup_model          (GtkTreeView      *tree_view);
57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
static void     gtk_tree_view_realize              (GtkWidget        *widget);
static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
static void     gtk_tree_view_map                  (GtkWidget        *widget);
static void     gtk_tree_view_size_request         (GtkWidget        *widget,
						    GtkRequisition   *requisition);
static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
						    GtkAllocation    *allocation);
static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
						    GdkEventExpose   *event);
static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
						    GdkEventMotion   *event);
static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
						    GdkEventCrossing *event);
static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
						    GdkEventCrossing *event);
static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
						    GdkEventButton   *event);
static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
						    GdkEventButton   *event);
static void     gtk_tree_view_draw_focus           (GtkWidget        *widget);
static gint     gtk_tree_view_focus_in             (GtkWidget        *widget,
						    GdkEventFocus    *event);
static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
						    GdkEventFocus    *event);
static gint     gtk_tree_view_focus                (GtkContainer     *container,
						    GtkDirectionType  direction);

/* container signals */
static void     gtk_tree_view_remove               (GtkContainer     *container,
						    GtkWidget        *widget);
static void     gtk_tree_view_forall               (GtkContainer     *container,
						    gboolean          include_internals,
						    GtkCallback       callback,
						    gpointer          callback_data);

/* tree_model signals */
static void     gtk_tree_view_set_adjustments      (GtkTreeView      *tree_view,
						    GtkAdjustment    *hadj,
						    GtkAdjustment    *vadj);
96
static void     gtk_tree_view_changed              (GtkTreeModel     *model,
97
						    GtkTreePath      *path,
98
						    GtkTreeIter      *iter,
99
						    gpointer          data);
100
static void     gtk_tree_view_inserted             (GtkTreeModel     *model,
101
						    GtkTreePath      *path,
102
						    GtkTreeIter      *iter,
103
						    gpointer          data);
104
static void     gtk_tree_view_child_toggled        (GtkTreeModel     *model,
105
						    GtkTreePath      *path,
106
						    GtkTreeIter      *iter,
107
						    gpointer          data);
108
static void     gtk_tree_view_deleted              (GtkTreeModel     *model,
109 110 111 112 113 114 115 116 117 118 119 120 121 122
						    GtkTreePath      *path,
						    gpointer          data);

/* Internal functions */
static void     gtk_tree_view_draw_arrow           (GtkTreeView      *tree_view,
						    GtkRBNode        *node,
						    gint              offset,
						    gint              x,
						    gint              y);
static gint     gtk_tree_view_new_column_width     (GtkTreeView      *tree_view,
						    gint              i,
						    gint             *x);
static void     gtk_tree_view_adjustment_changed   (GtkAdjustment    *adjustment,
						    GtkTreeView      *tree_view);
123
static gint     gtk_tree_view_insert_iter_height   (GtkTreeView      *tree_view,
124
						    GtkRBTree        *tree,
125
						    GtkTreeIter      *iter,
126 127 128
						    gint              depth);
static void     gtk_tree_view_build_tree           (GtkTreeView      *tree_view,
						    GtkRBTree        *tree,
129
						    GtkTreeIter      *iter,
130 131 132 133 134
						    gint              depth,
						    gboolean          recurse,
						    gboolean          calc_bounds);
static void     gtk_tree_view_calc_size            (GtkTreeView      *priv,
						    GtkRBTree        *tree,
135
						    GtkTreeIter      *iter,
136
						    gint              depth);
137 138
static gboolean gtk_tree_view_discover_dirty_iter  (GtkTreeView      *tree_view,
						    GtkTreeIter      *iter,
139 140 141 142
						    gint              depth,
						    gint             *height);
static void     gtk_tree_view_discover_dirty       (GtkTreeView      *tree_view,
						    GtkRBTree        *tree,
143
						    GtkTreeIter      *iter,
144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
						    gint              depth);
static void     gtk_tree_view_check_dirty          (GtkTreeView      *tree_view);
static void     gtk_tree_view_create_button        (GtkTreeView      *tree_view,
						    gint              i);
static void     gtk_tree_view_create_buttons       (GtkTreeView      *tree_view);
static void     gtk_tree_view_button_clicked       (GtkWidget        *widget,
						    gpointer          data);
static void     gtk_tree_view_clamp_node_visible   (GtkTreeView      *tree_view,
						    GtkRBTree        *tree,
						    GtkRBNode        *node);



static GtkContainerClass *parent_class = NULL;


/* Class Functions */
GtkType
gtk_tree_view_get_type (void)
{
  static GtkType tree_view_type = 0;

  if (!tree_view_type)
    {
      static const GTypeInfo tree_view_info =
      {
        sizeof (GtkTreeViewClass),
	NULL,		/* base_init */
	NULL,		/* base_finalize */
        (GClassInitFunc) gtk_tree_view_class_init,
	NULL,		/* class_finalize */
	NULL,		/* class_data */
        sizeof (GtkTreeView),
	0,              /* n_preallocs */
        (GInstanceInitFunc) gtk_tree_view_init
      };

181
      tree_view_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkTreeView", &tree_view_info, 0);
182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224
    }

  return tree_view_type;
}

static void
gtk_tree_view_class_init (GtkTreeViewClass *class)
{
  GtkObjectClass *object_class;
  GtkWidgetClass *widget_class;
  GtkContainerClass *container_class;

  object_class = (GtkObjectClass*) class;
  widget_class = (GtkWidgetClass*) class;
  container_class = (GtkContainerClass*) class;
  parent_class = g_type_class_peek_parent (class);

  widget_class->realize = gtk_tree_view_realize;
  widget_class->unrealize = gtk_tree_view_unrealize;
  widget_class->map = gtk_tree_view_map;
  widget_class->size_request = gtk_tree_view_size_request;
  widget_class->size_allocate = gtk_tree_view_size_allocate;
  widget_class->expose_event = gtk_tree_view_expose;
  widget_class->motion_notify_event = gtk_tree_view_motion;
  widget_class->enter_notify_event = gtk_tree_view_enter_notify;
  widget_class->leave_notify_event = gtk_tree_view_leave_notify;
  widget_class->button_press_event = gtk_tree_view_button_press;
  widget_class->button_release_event = gtk_tree_view_button_release;
  widget_class->draw_focus = gtk_tree_view_draw_focus;
  widget_class->focus_in_event = gtk_tree_view_focus_in;
  widget_class->focus_out_event = gtk_tree_view_focus_out;

  container_class->forall = gtk_tree_view_forall;
  container_class->remove = gtk_tree_view_remove;
  container_class->focus = gtk_tree_view_focus;

  class->set_scroll_adjustments = gtk_tree_view_set_adjustments;

  widget_class->set_scroll_adjustments_signal =
    gtk_signal_new ("set_scroll_adjustments",
		    GTK_RUN_LAST,
		    GTK_CLASS_TYPE (object_class),
		    GTK_SIGNAL_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
225
		    gtk_marshal_VOID__POINTER_POINTER,
226
		    GTK_TYPE_NONE, 2,
227
		    GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
228 229 230 231 232 233 234 235 236 237 238
}

static void
gtk_tree_view_init (GtkTreeView *tree_view)
{
  tree_view->priv = g_new0 (GtkTreeViewPrivate, 1);

  GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);

  tree_view->priv->flags = GTK_TREE_VIEW_IS_LIST | GTK_TREE_VIEW_SHOW_EXPANDERS | GTK_TREE_VIEW_DRAW_KEYFOCUS | GTK_TREE_VIEW_HEADERS_VISIBLE;
  tree_view->priv->tab_offset = TREE_VIEW_EXPANDER_WIDTH;
239 240
  tree_view->priv->n_columns = 0;
  tree_view->priv->columns = NULL;
241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265
  tree_view->priv->button_pressed_node = NULL;
  tree_view->priv->button_pressed_tree = NULL;
  tree_view->priv->prelight_node = NULL;
  tree_view->priv->prelight_offset = 0;
  tree_view->priv->header_height = 1;
  tree_view->priv->x_drag = 0;
  tree_view->priv->drag_pos = -1;
  tree_view->priv->selection = NULL;
  tree_view->priv->anchor = NULL;
  tree_view->priv->cursor = NULL;
  gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
  _gtk_tree_view_set_size (tree_view, 0, 0);
}

/* Widget methods
 */

static void
gtk_tree_view_realize_buttons (GtkTreeView *tree_view)
{
  GList *list;
  GtkTreeViewColumn *column;
  GdkWindowAttr attr;
  guint attributes_mask;

266 267 268
  g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
  g_return_if_fail (tree_view->priv->header_window != NULL);
  
269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286
  attr.window_type = GDK_WINDOW_CHILD;
  attr.wclass = GDK_INPUT_ONLY;
  attr.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
  attr.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
  attr.event_mask = gtk_widget_get_events (GTK_WIDGET (tree_view));
  attr.event_mask = (GDK_BUTTON_PRESS_MASK |
		     GDK_BUTTON_RELEASE_MASK |
		     GDK_POINTER_MOTION_MASK |
		     GDK_POINTER_MOTION_HINT_MASK |
		     GDK_KEY_PRESS_MASK);
  attributes_mask = GDK_WA_CURSOR | GDK_WA_X | GDK_WA_Y;
  attr.cursor = gdk_cursor_new (GDK_SB_H_DOUBLE_ARROW);
  tree_view->priv->cursor_drag = attr.cursor;

  attr.y = 0;
  attr.width = TREE_VIEW_DRAG_WIDTH;
  attr.height = tree_view->priv->header_height;

287
  for (list = tree_view->priv->columns; list; list = list->next)
288 289 290 291 292 293 294 295 296 297 298
    {
      column = list->data;
      if (column->button)
	{
	  if (column->visible == FALSE)
	    continue;
	  gtk_widget_set_parent_window (column->button,
					tree_view->priv->header_window);

	  attr.x = (column->button->allocation.x + column->button->allocation.width) - 3;

299 300
          g_return_if_fail (column->window == NULL);
          
301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323
	  column->window = gdk_window_new (tree_view->priv->header_window,
					   &attr, attributes_mask);
	  gdk_window_set_user_data (column->window, tree_view);
	}
    }
}

static void
gtk_tree_view_realize (GtkWidget *widget)
{
  GList *tmp_list;
  GtkTreeView *tree_view;
  GdkGCValues values;
  GdkWindowAttr attributes;
  gint attributes_mask;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  tree_view = GTK_TREE_VIEW (widget);

  if (!GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_MODEL_SETUP) &&
      tree_view->priv->model)
324
    gtk_tree_view_setup_model (tree_view);
325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418

  gtk_tree_view_check_dirty (GTK_TREE_VIEW (widget));
  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);

  /* Make the main, clipping window */
  attributes.window_type = GDK_WINDOW_CHILD;
  attributes.x = widget->allocation.x;
  attributes.y = widget->allocation.y;
  attributes.width = widget->allocation.width;
  attributes.height = widget->allocation.height;
  attributes.wclass = GDK_INPUT_OUTPUT;
  attributes.visual = gtk_widget_get_visual (widget);
  attributes.colormap = gtk_widget_get_colormap (widget);
  attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;

  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;

  widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
				   &attributes, attributes_mask);
  gdk_window_set_user_data (widget->window, widget);

  /* Make the window for the tree */
  attributes.x = 0;
  attributes.y = 0;
  attributes.width = tree_view->priv->width;
  attributes.height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
  attributes.event_mask = GDK_EXPOSURE_MASK |
    GDK_SCROLL_MASK |
    GDK_POINTER_MOTION_MASK |
    GDK_ENTER_NOTIFY_MASK |
    GDK_LEAVE_NOTIFY_MASK |
    GDK_BUTTON_PRESS_MASK |
    GDK_BUTTON_RELEASE_MASK |
    gtk_widget_get_events (widget);

  tree_view->priv->bin_window = gdk_window_new (widget->window,
						&attributes, attributes_mask);
  gdk_window_set_user_data (tree_view->priv->bin_window, widget);

  /* Make the column header window */
  attributes.x = 0;
  attributes.y = 0;
  attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
  attributes.height = tree_view->priv->header_height;
  attributes.event_mask = (GDK_EXPOSURE_MASK |
			   GDK_SCROLL_MASK |
			   GDK_BUTTON_PRESS_MASK |
			   GDK_BUTTON_RELEASE_MASK |
			   GDK_KEY_PRESS_MASK |
			   GDK_KEY_RELEASE_MASK) |
    gtk_widget_get_events (widget);

  tree_view->priv->header_window = gdk_window_new (widget->window,
						   &attributes, attributes_mask);
  gdk_window_set_user_data (tree_view->priv->header_window, widget);


  values.foreground = (widget->style->white.pixel==0 ?
		       widget->style->black:widget->style->white);
  values.function = GDK_XOR;
  values.subwindow_mode = GDK_INCLUDE_INFERIORS;
  tree_view->priv->xor_gc = gdk_gc_new_with_values (widget->window,
						    &values,
						    GDK_GC_FOREGROUND |
						    GDK_GC_FUNCTION |
						    GDK_GC_SUBWINDOW);
  /* Add them all up. */
  widget->style = gtk_style_attach (widget->style, widget->window);
  gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
  gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
  gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);

  tmp_list = tree_view->priv->children;
  while (tmp_list)
    {
      GtkTreeViewChild *child = tmp_list->data;
      tmp_list = tmp_list->next;

      gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
    }
  gtk_tree_view_realize_buttons (GTK_TREE_VIEW (widget));
  _gtk_tree_view_set_size (GTK_TREE_VIEW (widget), -1, -1);
}

static void
gtk_tree_view_unrealize (GtkWidget *widget)
{
  GtkTreeView *tree_view;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  tree_view = GTK_TREE_VIEW (widget);

419 420
  /* FIXME where do we clear column->window for each column? */
  
421 422 423 424 425 426 427 428 429
  gdk_window_set_user_data (tree_view->priv->bin_window, NULL);
  gdk_window_destroy (tree_view->priv->bin_window);
  tree_view->priv->bin_window = NULL;

  gdk_window_set_user_data (tree_view->priv->header_window, NULL);
  gdk_window_destroy (tree_view->priv->header_window);
  tree_view->priv->header_window = NULL;

  gdk_gc_destroy (tree_view->priv->xor_gc);
430 431 432

  /* GtkWidget::unrealize destroys children and widget->window */
  
433 434 435 436
  if (GTK_WIDGET_CLASS (parent_class)->unrealize)
    (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}

437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471
static void
gtk_tree_view_map_buttons (GtkTreeView *tree_view)
{
  GList *list;

  g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
  
  if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
    {
      GtkTreeViewColumn *column;
      
      for (list = tree_view->priv->columns; list; list = list->next)
	{
	  column = list->data;
          if (GTK_WIDGET_VISIBLE (column->button) &&
              !GTK_WIDGET_MAPPED (column->button))
            gtk_widget_map (column->button);
	}
      for (list = tree_view->priv->columns; list; list = list->next)
	{
	  column = list->data;
	  if (column->visible == FALSE)
	    continue;
	  if (column->column_type == GTK_TREE_VIEW_COLUMN_RESIZEABLE)
	    {
	      gdk_window_raise (column->window);
	      gdk_window_show (column->window);
	    }
	  else
	    gdk_window_hide (column->window);
	}
      gdk_window_show (tree_view->priv->header_window);
    }
}

472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497
static void
gtk_tree_view_map (GtkWidget *widget)
{
  GList *tmp_list;
  GtkTreeView *tree_view;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  tree_view = GTK_TREE_VIEW (widget);

  GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);

  tmp_list = tree_view->priv->children;
  while (tmp_list)
    {
      GtkTreeViewChild *child = tmp_list->data;
      tmp_list = tmp_list->next;

      if (GTK_WIDGET_VISIBLE (child->widget))
	{
	  if (!GTK_WIDGET_MAPPED (child->widget))
	    gtk_widget_map (child->widget);
	}
    }
  gdk_window_show (tree_view->priv->bin_window);
498 499 500 501 502 503 504 505 506 507 508 509 510 511

  gtk_tree_view_map_buttons (tree_view);
  
  gdk_window_show (widget->window);
}

static void
gtk_tree_view_size_request_buttons (GtkTreeView *tree_view)
{
  GList *list;
  
  tree_view->priv->header_height = 1;

  if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_MODEL_SETUP))
512
    {
513 514 515 516 517 518 519 520 521 522 523 524
      for (list = tree_view->priv->columns; list; list = list->next)
        {
          GtkRequisition requisition;
          GtkTreeViewColumn *column;
          
          column = list->data;
          
          gtk_widget_size_request (column->button, &requisition);
          
          column->size = MAX (column->size, requisition.width);
          tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
        }
525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551
    }
}

static void
gtk_tree_view_size_request (GtkWidget      *widget,
			    GtkRequisition *requisition)
{
  GtkTreeView *tree_view;
  GList *tmp_list;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  tree_view = GTK_TREE_VIEW (widget);

  requisition->width = 200;
  requisition->height = 200;

  tmp_list = tree_view->priv->children;

  while (tmp_list)
    {
      GtkTreeViewChild *child = tmp_list->data;
      GtkRequisition child_requisition;

      tmp_list = tmp_list->next;

552 553
      if (GTK_WIDGET_VISIBLE (child->widget))
        gtk_widget_size_request (child->widget, &child_requisition);
554
    }
555 556

  gtk_tree_view_size_request_buttons (tree_view);
557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573
}

static void
gtk_tree_view_size_allocate_buttons (GtkWidget *widget)
{
  GtkTreeView *tree_view;
  GList *list;
  GList *last_column;
  GtkTreeViewColumn *column;
  GtkAllocation allocation;
  gint width = 0;

  tree_view = GTK_TREE_VIEW (widget);

  allocation.y = 0;
  allocation.height = tree_view->priv->header_height;

574
  for (last_column = g_list_last (tree_view->priv->columns);
575 576 577 578 579 580 581
       last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
       last_column = last_column->prev)
    ;

  if (last_column == NULL)
    return;

582
  for (list = tree_view->priv->columns; list != last_column; list = list->next)
583 584 585 586 587 588 589 590 591 592 593 594
    {
      column = list->data;

      if (!column->visible)
	continue;

      allocation.x = width;
      allocation.width = column->size;
      width += column->size;
      gtk_widget_size_allocate (column->button, &allocation);

      if (column->window)
595 596 597
	gdk_window_move_resize (column->window,
                                width - TREE_VIEW_DRAG_WIDTH/2, allocation.y,
                                TREE_VIEW_DRAG_WIDTH, allocation.height);
598 599 600 601 602 603
    }
  column = list->data;
  allocation.x = width;
  allocation.width = MAX (widget->allocation.width, tree_view->priv->width) - width;
  gtk_widget_size_allocate (column->button, &allocation);
  if (column->window)
604 605 606 607
    gdk_window_move_resize (column->window,
                            allocation.x + allocation.width - TREE_VIEW_DRAG_WIDTH/2,
                            0,
                            TREE_VIEW_DRAG_WIDTH, allocation.height);
608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653
}

static void
gtk_tree_view_size_allocate (GtkWidget     *widget,
			     GtkAllocation *allocation)
{
  GList *tmp_list;
  GtkTreeView *tree_view;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  widget->allocation = *allocation;

  tree_view = GTK_TREE_VIEW (widget);

  tmp_list = tree_view->priv->children;

  while (tmp_list)
    {
      GtkAllocation allocation;
      GtkRequisition requisition;

      GtkTreeViewChild *child = tmp_list->data;
      tmp_list = tmp_list->next;

      allocation.x = child->x;
      allocation.y = child->y;
      gtk_widget_get_child_requisition (child->widget, &requisition);
      allocation.width = requisition.width;
      allocation.height = requisition.height;

      gtk_widget_size_allocate (child->widget, &allocation);
    }

  if (GTK_WIDGET_REALIZED (widget))
    {
      gdk_window_move_resize (widget->window,
			      allocation->x, allocation->y,
			      allocation->width, allocation->height);
      gdk_window_move_resize (tree_view->priv->header_window,
			      0, 0,
			      MAX (tree_view->priv->width, allocation->width),
			      tree_view->priv->header_height);
    }

654 655 656 657 658 659 660
  /* FIXME I don't think the invariant that the model must be setup
   * before touching the buttons is maintained in most of the
   * rest of the code, e.g. in realize, so something is wrong
   */
  if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_MODEL_SETUP))
    gtk_tree_view_size_allocate_buttons (widget);
  
661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692
  tree_view->priv->hadjustment->page_size = allocation->width;
  tree_view->priv->hadjustment->page_increment = allocation->width / 2;
  tree_view->priv->hadjustment->lower = 0;
  tree_view->priv->hadjustment->upper = tree_view->priv->width;
  if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
    tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
  gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->hadjustment), "changed");

  tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
  tree_view->priv->vadjustment->page_increment = (allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
  tree_view->priv->vadjustment->lower = 0;
  tree_view->priv->vadjustment->upper = tree_view->priv->height;
  if (tree_view->priv->vadjustment->value + allocation->height > tree_view->priv->height)
    gtk_adjustment_set_value (tree_view->priv->vadjustment,
			      (gfloat) MAX (tree_view->priv->height - allocation->height, 0));
  gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->vadjustment), "changed");
}

/* Warning: Very scary function.
 * Modify at your own risk
 */
static gboolean
gtk_tree_view_bin_expose (GtkWidget      *widget,
			  GdkEventExpose *event)
{
  GtkTreeView *tree_view;
  GtkTreePath *path;
  GtkRBTree *tree;
  GList *list;
  GtkRBNode *node, *last_node = NULL;
  GtkRBNode *cursor = NULL;
  GtkRBTree *cursor_tree = NULL, *last_tree = NULL;
693
  GtkTreeIter iter;
694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732
  GtkCellRenderer *cell;
  gint new_y;
  gint y_offset, x_offset, cell_offset;
  gint i, max_height;
  gint depth;
  GdkRectangle background_area;
  GdkRectangle cell_area;
  guint flags;
  gboolean last_selected;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);

  tree_view = GTK_TREE_VIEW (widget);

  if (tree_view->priv->tree == NULL)
    return TRUE;

  gtk_tree_view_check_dirty (GTK_TREE_VIEW (widget));
  /* we want to account for a potential HEADER offset.
   * That is, if the header exists, we want to offset our event by its
   * height to find the right node.
   */
  new_y = (event->area.y<TREE_VIEW_HEADER_HEIGHT (tree_view))?TREE_VIEW_HEADER_HEIGHT (tree_view):event->area.y;
  y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree,
				       new_y - TREE_VIEW_HEADER_HEIGHT (tree_view),
				       &tree,
				       &node) + new_y - event->area.y;
  if (node == NULL)
    return TRUE;

  /* See if the last node was selected */
  _gtk_rbtree_prev_full (tree, node, &last_tree, &last_node);
  last_selected = (last_node && GTK_RBNODE_FLAG_SET (last_node, GTK_RBNODE_IS_SELECTED));

  /* find the path for the node */
  path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
				   tree,
				   node);
733 734 735
  gtk_tree_model_get_iter (tree_view->priv->model,
			   &iter,
			   path);
736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758
  depth = gtk_tree_path_get_depth (path);
  gtk_tree_path_free (path);

  if (tree_view->priv->cursor)
    _gtk_tree_view_find_node (tree_view, tree_view->priv->cursor, &cursor_tree, &cursor);

  /* Actually process the expose event.  To do this, we want to
   * start at the first node of the event, and walk the tree in
   * order, drawing each successive node.
   */

  do
    {
      /* Need to think about this more.
	 if (tree_view->priv->show_expanders)
	 max_height = MAX (TREE_VIEW_EXPANDER_MIN_HEIGHT, GTK_RBNODE_GET_HEIGHT (node));
	 else
      */
      max_height = GTK_RBNODE_GET_HEIGHT (node);

      x_offset = -event->area.x;
      cell_offset = 0;

759 760
      background_area.y = y_offset + event->area.y + TREE_VIEW_VERTICAL_SEPARATOR;
      background_area.height = max_height - TREE_VIEW_VERTICAL_SEPARATOR;
761 762 763 764 765 766 767 768 769 770 771 772 773 774
      flags = 0;

      if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
	flags |= GTK_CELL_RENDERER_PRELIT;

      if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
	{
	  flags |= GTK_CELL_RENDERER_SELECTED;

	  /* Draw the selection */
	  gdk_draw_rectangle (event->window,
			      GTK_WIDGET (tree_view)->style->bg_gc [GTK_STATE_SELECTED],
			      TRUE,
			      event->area.x,
775
			      background_area.y - (last_selected?TREE_VIEW_VERTICAL_SEPARATOR:0),
776
			      event->area.width,
777
			      background_area.height + (last_selected?TREE_VIEW_VERTICAL_SEPARATOR:0));
778 779 780 781 782 783 784
	  last_selected = TRUE;
	}
      else
	{
	  last_selected = FALSE;
	}

785
      for (i = 0, list = tree_view->priv->columns; i < tree_view->priv->n_columns; i++, list = list->next)
786 787 788 789 790 791 792 793 794
	{
	  GtkTreeViewColumn *column = list->data;

	  if (!column->visible)
	    continue;

	  cell = column->cell;
	  gtk_tree_view_column_set_cell_data (column,
					      tree_view->priv->model,
795
					      &iter);
796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841

	  background_area.x = cell_offset;
	  background_area.width = TREE_VIEW_COLUMN_SIZE (column);
	  if (i == 0 && TREE_VIEW_DRAW_EXPANDERS(tree_view))
	    {
	      cell_area = background_area;
	      cell_area.x += depth*tree_view->priv->tab_offset;
	      cell_area.width -= depth*tree_view->priv->tab_offset;
	      gtk_cell_renderer_render (cell,
					event->window,
					widget,
					&background_area,
					&cell_area,
					&event->area,
					flags);
	      if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
		{
		  gint x, y;
		  gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, 0);
		  gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
					    node,
					    event->area.y + y_offset,
					    x, y);
		}
	    }
	  else
	    {
	      cell_area = background_area;
	      gtk_cell_renderer_render (cell,
					event->window,
					widget,
					&background_area,
					&cell_area,
					&event->area,
					flags);
	    }
	  cell_offset += TREE_VIEW_COLUMN_SIZE (column);
	}

      if (node == cursor &&
	  GTK_WIDGET_HAS_FOCUS (widget))
	gtk_tree_view_draw_focus (widget);

      y_offset += max_height;
      if (node->children)
	{
842 843 844
	  GtkTreeIter parent = iter;
	  gboolean has_child;

845 846 847 848
	  tree = node->children;
	  node = tree->root;
	  while (node->left != tree->nil)
	    node = node->left;
849 850 851
	  has_child = gtk_tree_model_iter_children (tree_view->priv->model,
						    &iter,
						    &parent);
852 853 854 855
	  cell = gtk_tree_view_get_column (tree_view, 0)->cell;
	  depth++;

	  /* Sanity Check! */
856
	  TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
857 858 859 860 861 862 863 864 865
	}
      else
	{
	  gboolean done = FALSE;
	  do
	    {
	      node = _gtk_rbtree_next (tree, node);
	      if (node != NULL)
		{
866
		  gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
867 868 869 870
		  cell = gtk_tree_view_get_column (tree_view, 0)->cell;
		  done = TRUE;

		  /* Sanity Check! */
871
		  TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
872 873 874
		}
	      else
		{
875 876 877
		  GtkTreeIter parent_iter = iter;
		  gboolean has_parent;

878 879 880
		  node = tree->parent_node;
		  tree = tree->parent_tree;
		  if (tree == NULL)
881 882
		    /* we've run out of tree.  It's okay to return though, as
		     * we'd only break out of the while loop below. */
883
		    return TRUE;
884 885 886
		  has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
							   &iter,
							   &parent_iter);
887 888 889
		  depth--;

		  /* Sanity check */
890
		  TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931
		}
	    }
	  while (!done);
	}
    }
  while (y_offset < event->area.height);

  return TRUE;
}

static gboolean
gtk_tree_view_expose (GtkWidget      *widget,
		      GdkEventExpose *event)
{
  GtkTreeView *tree_view;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);

  tree_view = GTK_TREE_VIEW (widget);

  if (event->window == tree_view->priv->bin_window)
    return gtk_tree_view_bin_expose (widget, event);

  return TRUE;
}

static gboolean
gtk_tree_view_motion (GtkWidget *widget,
		      GdkEventMotion  *event)
{
  GtkTreeView *tree_view;
  GtkRBTree *tree;
  GtkRBNode *node;
  gint new_y;
  gint y_offset;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);

  tree_view = GTK_TREE_VIEW (widget);
932
  
933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958
  if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
    {
      gint x;
      gint new_width;

      if (event->is_hint || event->window != widget->window)
	gtk_widget_get_pointer (widget, &x, NULL);
      else
	x = event->x;

      new_width = gtk_tree_view_new_column_width (GTK_TREE_VIEW (widget), tree_view->priv->drag_pos, &x);
      if (x != tree_view->priv->x_drag)
	{
	  gtk_tree_view_column_set_size (gtk_tree_view_get_column (GTK_TREE_VIEW (widget), tree_view->priv->drag_pos), new_width);
	}

      /* FIXME: We need to scroll */
      _gtk_tree_view_set_size (GTK_TREE_VIEW (widget), -1, tree_view->priv->height);
      return FALSE;
    }

  /* Sanity check it */
  if (event->window != tree_view->priv->bin_window)
    return FALSE;
  if (tree_view->priv->tree == NULL)
    return FALSE;
959
  
960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013
  if (tree_view->priv->prelight_node != NULL)
    {
      if ((((gint) event->y - TREE_VIEW_HEADER_HEIGHT (tree_view) < tree_view->priv->prelight_offset) ||
	   ((gint) event->y - TREE_VIEW_HEADER_HEIGHT (tree_view) >=
	    (tree_view->priv->prelight_offset + GTK_RBNODE_GET_HEIGHT (tree_view->priv->prelight_node))) ||
	   ((gint) event->x > tree_view->priv->tab_offset)))
	/* We need to unprelight the old one. */
	{
	  if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
	    {
	      GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node, GTK_RBNODE_IS_PRELIT);
	      gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
					tree_view->priv->prelight_node,
					tree_view->priv->prelight_offset,
					event->x,
					event->y);
	      GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
	    }

	  GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node, GTK_RBNODE_IS_PRELIT);
	  tree_view->priv->prelight_node = NULL;
	  tree_view->priv->prelight_tree = NULL;
	  tree_view->priv->prelight_offset = 0;
	}
    }

  new_y = ((gint)event->y<TREE_VIEW_HEADER_HEIGHT (tree_view))?TREE_VIEW_HEADER_HEIGHT (tree_view):(gint)event->y;
  y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y - TREE_VIEW_HEADER_HEIGHT (tree_view),
				       &tree,
				       &node) + new_y - (gint)event->y;

  if (node == NULL)
    return TRUE;

  /* If we are currently pressing down a button, we don't want to prelight anything else. */
  if ((tree_view->priv->button_pressed_node != NULL) &&
      (tree_view->priv->button_pressed_node != node))
    return TRUE;

  /* Do we want to prelight a tab? */
  GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
  if (event->x <= tree_view->priv->tab_offset &&
      event->x >= 0 &&
      ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
    {
      tree_view->priv->prelight_offset = event->y+y_offset;
      GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
    }

  tree_view->priv->prelight_node = node;
  tree_view->priv->prelight_tree = tree;
  tree_view->priv->prelight_offset = event->y+y_offset;

  GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
1014
  /* FIXME */
1015 1016 1017 1018 1019
  gtk_widget_queue_draw (widget);

  return TRUE;
}

1020 1021
/* FIXME Is this function necessary? Can I get an enter_notify event
 * w/o either an expose event or a mouse motion event?
1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
 */
static gboolean
gtk_tree_view_enter_notify (GtkWidget        *widget,
			    GdkEventCrossing *event)
{
  GtkTreeView *tree_view;
  GtkRBTree *tree;
  GtkRBNode *node;
  gint new_y;
  gint y_offset;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);

  tree_view = GTK_TREE_VIEW (widget);

  /* Sanity check it */
  if (event->window != tree_view->priv->bin_window)
    return FALSE;
  if (tree_view->priv->tree == NULL)
    return FALSE;

  if ((tree_view->priv->button_pressed_node != NULL) &&
      (tree_view->priv->button_pressed_node != node))
    return TRUE;

  /* find the node internally */
  new_y = ((gint)event->y<TREE_VIEW_HEADER_HEIGHT (tree_view))?TREE_VIEW_HEADER_HEIGHT (tree_view):(gint)event->y;
  y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree,
				       new_y - TREE_VIEW_HEADER_HEIGHT (tree_view),
				       &tree,
				       &node) + new_y - (gint)event->y;

  if (node == NULL)
    return FALSE;

  /* Do we want to prelight a tab? */
  GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
  if (event->x <= tree_view->priv->tab_offset &&
      event->x >= 0 &&
      ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
    {
      tree_view->priv->prelight_offset = event->y+y_offset;
      GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
    }

  tree_view->priv->prelight_node = node;
  tree_view->priv->prelight_tree = tree;
  tree_view->priv->prelight_offset = event->y+y_offset;

  GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
1073
  /* FIXME */
1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096
  gtk_widget_queue_draw (widget);

  return TRUE;
}

static gboolean
gtk_tree_view_leave_notify (GtkWidget        *widget,
			    GdkEventCrossing *event)
{
  GtkTreeView *tree_view;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);

  tree_view = GTK_TREE_VIEW (widget);

  if (tree_view->priv->prelight_node != NULL)
    {
      GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node, GTK_RBNODE_IS_PRELIT);
      tree_view->priv->prelight_node = NULL;
      tree_view->priv->prelight_tree = NULL;
      tree_view->priv->prelight_offset = 0;
      GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
1097
      /* FIXME */
1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163
      gtk_widget_queue_draw (widget);
    }
  return TRUE;
}

static gboolean
gtk_tree_view_button_press (GtkWidget      *widget,
			    GdkEventButton *event)
{
  GtkTreeView *tree_view;
  GList *list;
  GtkTreeViewColumn *column;
  gint i;
  GdkRectangle background_area;
  GdkRectangle cell_area;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  tree_view = GTK_TREE_VIEW (widget);

  if (event->window == tree_view->priv->bin_window)
    {
      GtkRBNode *node;
      GtkRBTree *tree;
      GtkTreePath *path;
      gchar *path_string;
      gint depth;
      gint new_y;
      gint y_offset;

      if (!GTK_WIDGET_HAS_FOCUS (widget))
	gtk_widget_grab_focus (widget);
      GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
      /* are we in an arrow? */
      if (tree_view->priv->prelight_node != FALSE && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
	{
	  if (event->button == 1)
	    {
	      gtk_grab_add (widget);
	      tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
	      tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
	      gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
					tree_view->priv->prelight_node,
					tree_view->priv->prelight_offset,
					event->x,
					event->y);
	    }
	  return TRUE;
	}

      /* find the node that was clicked */
      new_y = ((gint)event->y<TREE_VIEW_HEADER_HEIGHT (tree_view))?TREE_VIEW_HEADER_HEIGHT (tree_view):(gint)event->y;
      y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree,
					   new_y - TREE_VIEW_HEADER_HEIGHT (tree_view),
					   &tree,
					   &node) + new_y - (gint)event->y;

      if (node == NULL)
	/* We clicked in dead space */
	return TRUE;

      /* Get the path and the node */
      path = _gtk_tree_view_find_path (tree_view, tree, node);
      depth = gtk_tree_path_get_depth (path);
1164 1165
      background_area.y = y_offset + event->y + TREE_VIEW_VERTICAL_SEPARATOR;
      background_area.height = GTK_RBNODE_GET_HEIGHT (node) - TREE_VIEW_VERTICAL_SEPARATOR;
1166 1167 1168
      background_area.x = 0;
      /* Let the cell have a chance at selecting it. */

1169
      for (i = 0, list = tree_view->priv->columns; i < tree_view->priv->n_columns; i++, list = list->next)
1170 1171 1172
	{
	  GtkTreeViewColumn *column = list->data;
	  GtkCellRenderer *cell;
1173
	  GtkTreeIter iter;
1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200

	  if (!column->visible)
	    continue;

	  background_area.width = TREE_VIEW_COLUMN_SIZE (column);
	  if (i == 0 && TREE_VIEW_DRAW_EXPANDERS(tree_view))
	    {
	      cell_area = background_area;
	      cell_area.x += depth*tree_view->priv->tab_offset;
	      cell_area.width -= depth*tree_view->priv->tab_offset;
	    }
	  else
	    {
	      cell_area = background_area;
	    }

	  cell = column->cell;

	  if ((background_area.x > (gint) event->x) ||
	      (background_area.y > (gint) event->y) ||
	      (background_area.x + background_area.width <= (gint) event->x) ||
	      (background_area.y + background_area.height <= (gint) event->y))
	    {
	      background_area.x += background_area.width;
	      continue;
	    }

1201 1202 1203
	  gtk_tree_model_get_iter (tree_view->priv->model,
				   &iter,
				   path);
1204 1205
	  gtk_tree_view_column_set_cell_data (column,
					      tree_view->priv->model,
1206
					      &iter);
1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240

	  path_string = gtk_tree_path_to_string (path);
	  if (gtk_cell_renderer_event (cell,
				       (GdkEvent *)event,
				       widget,
				       path_string,
				       &background_area,
				       &cell_area,
				       0))

	    {
	      g_free (path_string);
	      gtk_tree_path_free (path);
	      return TRUE;
	    }
	  else
	    {
	      g_free (path_string);
	      break;
	    }
	}
      /* Handle the selection */
      if (tree_view->priv->selection == NULL)
	gtk_tree_selection_new_with_tree_view (tree_view);

      _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
						node,
						tree,
						path,
						event->state);
      gtk_tree_path_free (path);
      return TRUE;
    }

1241
  for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320
    {
      column = list->data;
      if (event->window == column->window &&
	  column->column_type == GTK_TREE_VIEW_COLUMN_RESIZEABLE &&
	  column->window)
	{
	  gpointer drag_data;

	  if (gdk_pointer_grab (column->window, FALSE,
				GDK_POINTER_MOTION_HINT_MASK |
				GDK_BUTTON1_MOTION_MASK |
				GDK_BUTTON_RELEASE_MASK,
				NULL, NULL, event->time))
	    return FALSE;

	  gtk_grab_add (widget);
	  GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);

	  /* block attached dnd signal handler */
	  drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
	  if (drag_data)
	    gtk_signal_handler_block_by_data (GTK_OBJECT (widget), drag_data);

	  if (!GTK_WIDGET_HAS_FOCUS (widget))
	    gtk_widget_grab_focus (widget);

	  tree_view->priv->drag_pos = i;
	  tree_view->priv->x_drag = (column->button->allocation.x + column->button->allocation.width);
	}
    }
  return TRUE;
}

static gboolean
gtk_tree_view_button_release (GtkWidget      *widget,
			      GdkEventButton *event)
{
  GtkTreeView *tree_view;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  tree_view = GTK_TREE_VIEW (widget);

  if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
    {
      gpointer drag_data;
      gint width;
      gint x;
      gint i;

      i = tree_view->priv->drag_pos;
      tree_view->priv->drag_pos = -1;

      /* unblock attached dnd signal handler */
      drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
      if (drag_data)
	gtk_signal_handler_unblock_by_data (GTK_OBJECT (widget), drag_data);

      GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
      gtk_widget_get_pointer (widget, &x, NULL);
      gtk_grab_remove (widget);
      gdk_pointer_ungrab (event->time);

      width = gtk_tree_view_new_column_width (GTK_TREE_VIEW (widget), i, &x);
      gtk_tree_view_column_set_size (gtk_tree_view_get_column (GTK_TREE_VIEW (widget), i), width);
      return FALSE;
    }

  if (tree_view->priv->button_pressed_node == NULL)
    return FALSE;

  if (event->button == 1)
    {
      gtk_grab_remove (widget);
      if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
	{
	  GtkTreePath *path;
1321
	  GtkTreeIter iter;
1322 1323 1324 1325

	  /* Actually activate the node */
	  if (tree_view->priv->button_pressed_node->children == NULL)
	    {
1326
	      GtkTreeIter child;
1327 1328 1329 1330 1331 1332
	      path = _gtk_tree_view_find_path (GTK_TREE_VIEW (widget),
					       tree_view->priv->button_pressed_tree,
					       tree_view->priv->button_pressed_node);
	      tree_view->priv->button_pressed_node->children = _gtk_rbtree_new ();
	      tree_view->priv->button_pressed_node->children->parent_tree = tree_view->priv->button_pressed_tree;
	      tree_view->priv->button_pressed_node->children->parent_node = tree_view->priv->button_pressed_node;
1333 1334
	      gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
	      gtk_tree_model_iter_children (tree_view->priv->model, &child, &iter);
1335 1336 1337

	      gtk_tree_view_build_tree (tree_view,
					tree_view->priv->button_pressed_node->children,
1338
					&child,
1339 1340 1341 1342 1343 1344 1345 1346 1347
					gtk_tree_path_get_depth (path) + 1,
					FALSE,
					GTK_WIDGET_REALIZED (widget));
	    }
	  else
	    {
	      path = _gtk_tree_view_find_path (GTK_TREE_VIEW (widget),
					       tree_view->priv->button_pressed_node->children,
					       tree_view->priv->button_pressed_node->children->root);
1348 1349 1350
	      gtk_tree_model_get_iter (tree_view->priv->model,
				       &iter,
				       path);
1351 1352 1353

	      gtk_tree_view_discover_dirty (GTK_TREE_VIEW (widget),
					    tree_view->priv->button_pressed_node->children,
1354
					    &iter,
1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
					    gtk_tree_path_get_depth (path));
	      _gtk_rbtree_remove (tree_view->priv->button_pressed_node->children);
	    }
	  gtk_tree_path_free (path);

	  _gtk_tree_view_set_size (GTK_TREE_VIEW (widget), -1, -1);
	}

      tree_view->priv->button_pressed_node = NULL;
    }

  return TRUE;
}


static void
gtk_tree_view_draw_focus (GtkWidget *widget)
{
  GtkTreeView *tree_view;
  GtkRBTree *cursor_tree = NULL;
  GtkRBNode *cursor = NULL;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  tree_view = GTK_TREE_VIEW (widget);

  if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS))
    return;
  if (tree_view->priv->cursor == NULL)
    return;

  _gtk_tree_view_find_node (tree_view, tree_view->priv->cursor, &cursor_tree, &cursor);
  if (cursor == NULL)
    return;

1391
  /* FIXME need a style function appropriate for this */
1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415
  gdk_draw_rectangle (tree_view->priv->bin_window,
		      widget->style->fg_gc[GTK_STATE_NORMAL],
		      FALSE,
		      0,
		      _gtk_rbtree_node_find_offset (cursor_tree, cursor) + TREE_VIEW_HEADER_HEIGHT (tree_view),
		      (gint) MAX (tree_view->priv->width, tree_view->priv->hadjustment->upper),
		      GTK_RBNODE_GET_HEIGHT (cursor));
}


static gint
gtk_tree_view_focus_in (GtkWidget     *widget,
			GdkEventFocus *event)
{
  GtkTreeView *tree_view;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  tree_view = GTK_TREE_VIEW (widget);

  GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);

1416 1417
  /* FIXME don't redraw so much */
  gtk_widget_queue_draw (widget);
1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432

  return FALSE;
}


static gint
gtk_tree_view_focus_out (GtkWidget     *widget,
			 GdkEventFocus *event)
{
  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);

1433
  /* FIXME don't redraw so much */
1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460
  gtk_widget_queue_draw (widget);

  return FALSE;
}

/* FIXME: It would be neat to someday make the headers a seperate widget that
 * can be shared between various apps
 */
/* Returns TRUE if the focus is within the headers, after the focus operation is
 * done
 */
static gboolean
gtk_tree_view_header_focus (GtkTreeView        *tree_view,
			    GtkDirectionType  dir)
{
  GtkWidget *focus_child;
  GtkContainer *container;

  GList *last_column, *first_column;
  GList *tmp_list;

  if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
    return FALSE;

  focus_child = GTK_CONTAINER (tree_view)->focus_child;
  container = GTK_CONTAINER (tree_view);

1461
  for (last_column = g_list_last (tree_view->priv->columns);
1462 1463 1464 1465 1466 1467
       last_column &&
	 !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
	 GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
       last_column = last_column->prev)
    ;

1468
  for (first_column = tree_view->priv->columns;
1469 1470 1471 1472 1473 1474 1475 1476 1477 1478
       first_column &&
	 !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible) &&
	 GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (first_column->data)->button);
       first_column = first_column->next)
    ;

  /* no headers are visible, or are focussable.  We can't focus in or out.
   * I wonder if focussable is a real word...
   */
  if (last_column == NULL)
1479
    return FALSE;
1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568

  /* First thing we want to handle is entering and leaving the headers.
   */
  switch (dir)
    {
    case GTK_DIR_TAB_BACKWARD:
      if (!focus_child)
	{
	  focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
	  gtk_widget_grab_focus (focus_child);
	  goto cleanup;
	}
      if (focus_child == GTK_TREE_VIEW_COLUMN (first_column->data)->button)
	{
	  focus_child = NULL;
	  goto cleanup;
	}
      break;

    case GTK_DIR_TAB_FORWARD:
      if (!focus_child)
	{
	  focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
	  gtk_widget_grab_focus (focus_child);
	  goto cleanup;
	}
      if (focus_child == GTK_TREE_VIEW_COLUMN (last_column->data)->button)
	{
	  focus_child = NULL;
	  goto cleanup;
	}
      break;

    case GTK_DIR_LEFT:
      if (!focus_child)
	{
	  focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
	  gtk_widget_grab_focus (focus_child);
	  goto cleanup;
	}
      if (focus_child == GTK_TREE_VIEW_COLUMN (first_column->data)->button)
	{
	  focus_child = NULL;
	  goto cleanup;
	}
      break;

    case GTK_DIR_RIGHT:
      if (!focus_child)
	{
	  focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
	  gtk_widget_grab_focus (focus_child);
	  goto cleanup;
	}
      if (focus_child == GTK_TREE_VIEW_COLUMN (last_column->data)->button)
	{
	  focus_child = NULL;
	  goto cleanup;
	}
      break;

    case GTK_DIR_UP:
      if (!focus_child)
	{
	  focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
	  gtk_widget_grab_focus (focus_child);
	}
      else
	{
	  focus_child = NULL;
	}
      goto cleanup;

    case GTK_DIR_DOWN:
      if (!focus_child)
	{
	  focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
	  gtk_widget_grab_focus (focus_child);
	}
      else
	{
	  focus_child = NULL;
	}
      goto cleanup;
    }

  /* We need to move the focus to the next button. */
  if (focus_child)
    {
1569
      for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600