Pileus Git - ~andy/gtk/blob - gtk/gtkcellareabox.c

   1 /* gtkcellareabox.c
   2  *
   3  * Copyright (C) 2010 Openismus GmbH
   4  *
   5  * Authors:
   6  *      Tristan Van Berkom <tristanvb@openismus.com>
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Library General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Library General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Library General Public
  19  * License along with this library; if not, write to the
  20  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21  * Boston, MA 02111-1307, USA.
  22  */
  23
  24 #include "config.h"
  25 #include "gtkintl.h"
  26 #include "gtkorientable.h"
  27 #include "gtkcelllayout.h"
  28 #include "gtkcellareabox.h"
  29 #include "gtkcellareaboxiter.h"
  30 #include "gtkprivate.h"
  31
  32
  33 /* GObjectClass */
  34 static void      gtk_cell_area_box_finalize                       (GObject              *object);
  35 static void      gtk_cell_area_box_dispose                        (GObject              *object);
  36 static void      gtk_cell_area_box_set_property                   (GObject              *object,
  37                                                                    guint                 prop_id,
  38                                                                    const GValue         *value,
  39                                                                    GParamSpec           *pspec);
  40 static void      gtk_cell_area_box_get_property                   (GObject              *object,
  41                                                                    guint                 prop_id,
  42                                                                    GValue               *value,
  43                                                                    GParamSpec           *pspec);
  44
  45 /* GtkCellAreaClass */
  46 static void      gtk_cell_area_box_add                            (GtkCellArea          *area,
  47                                                                    GtkCellRenderer      *renderer);
  48 static void      gtk_cell_area_box_remove                         (GtkCellArea          *area,
  49                                                                    GtkCellRenderer      *renderer);
  50 static void      gtk_cell_area_box_forall                         (GtkCellArea          *area,
  51                                                                    GtkCellCallback       callback,
  52                                                                    gpointer              callback_data);
  53 static gint      gtk_cell_area_box_event                          (GtkCellArea          *area,
  54                                                                    GtkCellAreaIter      *iter,
  55                                                                    GtkWidget            *widget,
  56                                                                    GdkEvent             *event,
  57                                                                    const GdkRectangle   *cell_area,
  58                                                                    GtkCellRendererState  flags);
  59 static void      gtk_cell_area_box_render                         (GtkCellArea          *area,
  60                                                                    GtkCellAreaIter      *iter,
  61                                                                    GtkWidget            *widget,
  62                                                                    cairo_t              *cr,
  63                                                                    const GdkRectangle   *cell_area,
  64                                                                    GtkCellRendererState  flags);
  65 static void      gtk_cell_area_box_set_cell_property              (GtkCellArea          *area,
  66                                                                    GtkCellRenderer      *renderer,
  67                                                                    guint                 prop_id,
  68                                                                    const GValue         *value,
  69                                                                    GParamSpec           *pspec);
  70 static void      gtk_cell_area_box_get_cell_property              (GtkCellArea          *area,
  71                                                                    GtkCellRenderer      *renderer,
  72                                                                    guint                 prop_id,
  73                                                                    GValue               *value,
  74                                                                    GParamSpec           *pspec);
  75 static GtkCellAreaIter    *gtk_cell_area_box_create_iter          (GtkCellArea          *area);
  76 static GtkSizeRequestMode  gtk_cell_area_box_get_request_mode     (GtkCellArea          *area);
  77 static void      gtk_cell_area_box_get_preferred_width            (GtkCellArea          *area,
  78                                                                    GtkCellAreaIter      *iter,
  79                                                                    GtkWidget            *widget,
  80                                                                    gint                 *minimum_width,
  81                                                                    gint                 *natural_width);
  82 static void      gtk_cell_area_box_get_preferred_height           (GtkCellArea          *area,
  83                                                                    GtkCellAreaIter      *iter,
  84                                                                    GtkWidget            *widget,
  85                                                                    gint                 *minimum_height,
  86                                                                    gint                 *natural_height);
  87 static void      gtk_cell_area_box_get_preferred_height_for_width (GtkCellArea          *area,
  88                                                                    GtkCellAreaIter      *iter,
  89                                                                    GtkWidget            *widget,
  90                                                                    gint                  width,
  91                                                                    gint                 *minimum_height,
  92                                                                    gint                 *natural_height);
  93 static void      gtk_cell_area_box_get_preferred_width_for_height (GtkCellArea          *area,
  94                                                                    GtkCellAreaIter      *iter,
  95                                                                    GtkWidget            *widget,
  96                                                                    gint                  height,
  97                                                                    gint                 *minimum_width,
  98                                                                    gint                 *natural_width);
  99 static void      gtk_cell_area_box_grab_focus                     (GtkCellArea          *area,
 100                                                                    GtkDirectionType      direction);
 101
 102 /* GtkCellLayoutIface */
 103 static void      gtk_cell_area_box_cell_layout_init               (GtkCellLayoutIface *iface);
 104 static void      gtk_cell_area_box_layout_pack_start              (GtkCellLayout      *cell_layout,
 105                                                                    GtkCellRenderer    *renderer,
 106                                                                    gboolean            expand);
 107 static void      gtk_cell_area_box_layout_pack_end                (GtkCellLayout      *cell_layout,
 108                                                                    GtkCellRenderer    *renderer,
 109                                                                    gboolean            expand);
 110 static void      gtk_cell_area_box_layout_reorder                 (GtkCellLayout      *cell_layout,
 111                                                                    GtkCellRenderer    *renderer,
 112                                                                    gint                position);
 113
 114
 115 /* CellInfo/CellGroup metadata handling and convenience functions */
 116 typedef struct {
 117   GtkCellRenderer *renderer;
 118
 119   guint            expand : 1; /* Whether the cell expands */
 120   guint            pack   : 1; /* Whether the cell is packed from the start or end */
 121   guint            align  : 1; /* Whether to align this cell's position with adjacent rows */
 122 } CellInfo;
 123
 124 typedef struct {
 125   GList *cells;
 126
 127   guint  id           : 8;
 128   guint  n_cells      : 8;
 129   guint  expand_cells : 8;
 130 } CellGroup;
 131
 132 typedef struct {
 133   GtkCellRenderer *renderer;
 134
 135   gint             position;
 136   gint             size;
 137 } AllocatedCell;
 138
 139 static CellInfo      *cell_info_new          (GtkCellRenderer    *renderer,
 140                                               GtkPackType         pack,
 141                                               gboolean            expand,
 142                                               gboolean            align);
 143 static void           cell_info_free         (CellInfo           *info);
 144 static gint           cell_info_find         (CellInfo           *info,
 145                                               GtkCellRenderer    *renderer);
 146
 147 static AllocatedCell *allocated_cell_new     (GtkCellRenderer    *renderer,
 148                                               gint                position,
 149                                               gint                size);
 150 static void           allocated_cell_free    (AllocatedCell      *cell);
 151 static GList         *list_consecutive_cells (GtkCellAreaBox     *box);
 152 static gint           count_expand_groups    (GtkCellAreaBox     *box);
 153 static void           iter_weak_notify       (GtkCellAreaBox     *box,
 154                                               GtkCellAreaBoxIter *dead_iter);
 155 static void           flush_iters            (GtkCellAreaBox     *box);
 156 static void           init_iter_groups       (GtkCellAreaBox     *box);
 157 static void           init_iter_group        (GtkCellAreaBox     *box,
 158                                               GtkCellAreaBoxIter *iter);
 159 static GSList        *get_allocated_cells    (GtkCellAreaBox     *box,
 160                                               GtkCellAreaBoxIter *iter,
 161                                               GtkWidget          *widget);
 162
 163
 164 struct _GtkCellAreaBoxPrivate
 165 {
 166   GtkOrientation  orientation;
 167
 168   GList          *cells;
 169   GArray         *groups;
 170
 171   GSList         *iters;
 172
 173   gint            spacing;
 174 };
 175
 176 enum {
 177   PROP_0,
 178   PROP_ORIENTATION,
 179   PROP_SPACING
 180 };
 181
 182 enum {
 183   CELL_PROP_0,
 184   CELL_PROP_EXPAND,
 185   CELL_PROP_ALIGN,
 186   CELL_PROP_PACK_TYPE
 187 };
 188
 189 G_DEFINE_TYPE_WITH_CODE (GtkCellAreaBox, gtk_cell_area_box, GTK_TYPE_CELL_AREA,
 190                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 191                                                 gtk_cell_area_box_cell_layout_init)
 192                          G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL));
 193
 194 #define OPPOSITE_ORIENTATION(orientation)                       \
 195   ((orientation) == GTK_ORIENTATION_HORIZONTAL ?                \
 196    GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL)
 197
 198 static void
 199 gtk_cell_area_box_init (GtkCellAreaBox *box)
 200 {
 201   GtkCellAreaBoxPrivate *priv;
 202
 203   box->priv = G_TYPE_INSTANCE_GET_PRIVATE (box,
 204                                            GTK_TYPE_CELL_AREA_BOX,
 205                                            GtkCellAreaBoxPrivate);
 206   priv = box->priv;
 207
 208   priv->orientation = GTK_ORIENTATION_HORIZONTAL;
 209   priv->groups      = g_array_new (FALSE, TRUE, sizeof (CellGroup));
 210   priv->cells       = NULL;
 211   priv->iters       = NULL;
 212   priv->spacing     = 0;
 213 }
 214
 215 static void
 216 gtk_cell_area_box_class_init (GtkCellAreaBoxClass *class)
 217 {
 218   GObjectClass     *object_class = G_OBJECT_CLASS (class);
 219   GtkCellAreaClass *area_class   = GTK_CELL_AREA_CLASS (class);
 220
 221   /* GObjectClass */
 222   object_class->finalize     = gtk_cell_area_box_finalize;
 223   object_class->dispose      = gtk_cell_area_box_dispose;
 224   object_class->set_property = gtk_cell_area_box_set_property;
 225   object_class->get_property = gtk_cell_area_box_get_property;
 226
 227   /* GtkCellAreaClass */
 228   area_class->add               = gtk_cell_area_box_add;
 229   area_class->remove            = gtk_cell_area_box_remove;
 230   area_class->forall            = gtk_cell_area_box_forall;
 231   area_class->event             = gtk_cell_area_box_event;
 232   area_class->render            = gtk_cell_area_box_render;
 233   area_class->set_cell_property = gtk_cell_area_box_set_cell_property;
 234   area_class->get_cell_property = gtk_cell_area_box_get_cell_property;
 235
 236   area_class->create_iter                    = gtk_cell_area_box_create_iter;
 237   area_class->get_request_mode               = gtk_cell_area_box_get_request_mode;
 238   area_class->get_preferred_width            = gtk_cell_area_box_get_preferred_width;
 239   area_class->get_preferred_height           = gtk_cell_area_box_get_preferred_height;
 240   area_class->get_preferred_height_for_width = gtk_cell_area_box_get_preferred_height_for_width;
 241   area_class->get_preferred_width_for_height = gtk_cell_area_box_get_preferred_width_for_height;
 242
 243   area_class->grab_focus = gtk_cell_area_box_grab_focus;
 244
 245   /* Properties */
 246   g_object_class_override_property (object_class, PROP_ORIENTATION, "orientation");
 247
 248   g_object_class_install_property (object_class,
 249                                    PROP_SPACING,
 250                                    g_param_spec_int ("spacing",
 251                                                      P_("Spacing"),
 252                                                      P_("Space which is inserted between cells"),
 253                                                      0,
 254                                                      G_MAXINT,
 255                                                      0,
 256                                                      GTK_PARAM_READWRITE));
 257
 258   /* Cell Properties */
 259   gtk_cell_area_class_install_cell_property (area_class,
 260                                              CELL_PROP_EXPAND,
 261                                              g_param_spec_boolean
 262                                              ("expand",
 263                                               P_("Expand"),
 264                                               P_("Whether the cell expands"),
 265                                               FALSE,
 266                                               GTK_PARAM_READWRITE));
 267
 268   gtk_cell_area_class_install_cell_property (area_class,
 269                                              CELL_PROP_ALIGN,
 270                                              g_param_spec_boolean
 271                                              ("align",
 272                                               P_("Align"),
 273                                               P_("Whether cell should align with adjacent rows"),
 274                                               TRUE,
 275                                               GTK_PARAM_READWRITE));
 276
 277   gtk_cell_area_class_install_cell_property (area_class,
 278                                              CELL_PROP_PACK_TYPE,
 279                                              g_param_spec_enum
 280                                              ("pack-type",
 281                                               P_("Pack Type"),
 282                                               P_("A GtkPackType indicating whether the cell is packed with "
 283                                                  "reference to the start or end of the cell area"),
 284                                               GTK_TYPE_PACK_TYPE, GTK_PACK_START,
 285                                               GTK_PARAM_READWRITE));
 286
 287   g_type_class_add_private (object_class, sizeof (GtkCellAreaBoxPrivate));
 288 }
 289
 290
 291 /*************************************************************
 292  *    CellInfo/CellGroup basics and convenience functions    *
 293  *************************************************************/
 294 static CellInfo *
 295 cell_info_new  (GtkCellRenderer *renderer,
 296                 GtkPackType      pack,
 297                 gboolean         expand,
 298                 gboolean         align)
 299 {
 300   CellInfo *info = g_slice_new (CellInfo);
 301
 302   info->renderer = g_object_ref_sink (renderer);
 303   info->pack     = pack;
 304   info->expand   = expand;
 305   info->align    = align;
 306
 307   return info;
 308 }
 309
 310 static void
 311 cell_info_free (CellInfo *info)
 312 {
 313   g_object_unref (info->renderer);
 314
 315   g_slice_free (CellInfo, info);
 316 }
 317
 318 static gint
 319 cell_info_find (CellInfo        *info,
 320                 GtkCellRenderer *renderer)
 321 {
 322   return (info->renderer == renderer) ? 0 : -1;
 323 }
 324
 325 static AllocatedCell *
 326 allocated_cell_new (GtkCellRenderer *renderer,
 327                     gint             position,
 328                     gint             size)
 329 {
 330   AllocatedCell *cell = g_slice_new (AllocatedCell);
 331
 332   cell->renderer = renderer;
 333   cell->position = position;
 334   cell->size     = size;
 335
 336   return cell;
 337 }
 338
 339 static void
 340 allocated_cell_free (AllocatedCell *cell)
 341 {
 342   g_slice_free (AllocatedCell, cell);
 343 }
 344
 345 static GList *
 346 list_consecutive_cells (GtkCellAreaBox *box)
 347 {
 348   GtkCellAreaBoxPrivate *priv = box->priv;
 349   GList                 *l, *consecutive_cells = NULL, *pack_end_cells = NULL;
 350   CellInfo              *info;
 351
 352   /* List cells in consecutive order taking their
 353    * PACK_START/PACK_END options into account
 354    */
 355   for (l = priv->cells; l; l = l->next)
 356     {
 357       info = l->data;
 358
 359       if (info->pack == GTK_PACK_START)
 360         consecutive_cells = g_list_prepend (consecutive_cells, info);
 361     }
 362
 363   for (l = priv->cells; l; l = l->next)
 364     {
 365       info = l->data;
 366
 367       if (info->pack == GTK_PACK_END)
 368         pack_end_cells = g_list_prepend (pack_end_cells, info);
 369     }
 370
 371   consecutive_cells = g_list_reverse (consecutive_cells);
 372   consecutive_cells = g_list_concat (consecutive_cells, pack_end_cells);
 373
 374   return consecutive_cells;
 375 }
 376
 377 static void
 378 cell_groups_clear (GtkCellAreaBox     *box)
 379 {
 380   GtkCellAreaBoxPrivate *priv  = box->priv;
 381   gint                   i;
 382
 383   for (i = 0; i < priv->groups->len; i++)
 384     {
 385       CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
 386
 387       g_list_free (group->cells);
 388     }
 389
 390   g_array_set_size (priv->groups, 0);
 391 }
 392
 393 static void
 394 cell_groups_rebuild (GtkCellAreaBox *box)
 395 {
 396   GtkCellAreaBoxPrivate *priv  = box->priv;
 397   CellGroup              group = { 0, };
 398   GList                 *cells, *l;
 399   guint                  id = 0;
 400
 401   cell_groups_clear (box);
 402
 403   if (!priv->cells)
 404     return;
 405
 406   cells = list_consecutive_cells (box);
 407
 408   /* First group is implied */
 409   g_array_append_val (priv->groups, group);
 410
 411   for (l = cells; l; l = l->next)
 412     {
 413       CellInfo *info = l->data;
 414
 415       /* A new group starts with any aligned cell, the first group is implied */
 416       if (info->align && l != cells)
 417         {
 418           memset (&group, 0x0, sizeof (CellGroup));
 419           group.id = ++id;
 420
 421           g_array_append_val (priv->groups, group);
 422         }
 423
 424       group.cells = g_list_prepend (group.cells, info);
 425       group.n_cells++;
 426
 427       /* A group expands if it contains any expand cells */
 428       if (info->expand)
 429         group.expand_cells++;
 430     }
 431
 432   g_list_free (cells);
 433
 434   for (id = 0; id < priv->groups->len; id++)
 435     {
 436       CellGroup *group_ptr = &g_array_index (priv->groups, CellGroup, id);
 437
 438       group_ptr->cells = g_list_reverse (group_ptr->cells);
 439     }
 440
 441   /* Iters need to be updated with the new grouping information */
 442   init_iter_groups (box);
 443 }
 444
 445 static gint
 446 count_visible_cells (CellGroup *group,
 447                      gint      *expand_cells)
 448 {
 449   GList *l;
 450   gint   visible_cells = 0;
 451   gint   n_expand_cells = 0;
 452
 453   for (l = group->cells; l; l = l->next)
 454     {
 455       CellInfo *info = l->data;
 456
 457       if (gtk_cell_renderer_get_visible (info->renderer))
 458         {
 459           visible_cells++;
 460
 461           if (info->expand)
 462             n_expand_cells++;
 463         }
 464     }
 465
 466   if (expand_cells)
 467     *expand_cells = n_expand_cells;
 468
 469   return visible_cells;
 470 }
 471
 472 static gint
 473 count_expand_groups (GtkCellAreaBox  *box)
 474 {
 475   GtkCellAreaBoxPrivate *priv = box->priv;
 476   gint                   i;
 477   gint                   expand_groups = 0;
 478
 479   for (i = 0; i < priv->groups->len; i++)
 480     {
 481       CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
 482
 483       if (group->expand_cells > 0)
 484         expand_groups++;
 485     }
 486
 487   return expand_groups;
 488 }
 489
 490 static void
 491 iter_weak_notify (GtkCellAreaBox     *box,
 492                   GtkCellAreaBoxIter *dead_iter)
 493 {
 494   GtkCellAreaBoxPrivate *priv = box->priv;
 495
 496   priv->iters = g_slist_remove (priv->iters, dead_iter);
 497 }
 498
 499 static void
 500 init_iter_group (GtkCellAreaBox     *box,
 501                  GtkCellAreaBoxIter *iter)
 502 {
 503   GtkCellAreaBoxPrivate *priv = box->priv;
 504   gint                  *expand_groups, i;
 505
 506   expand_groups = g_new (gboolean, priv->groups->len);
 507
 508   for (i = 0; i < priv->groups->len; i++)
 509     {
 510       CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
 511
 512       expand_groups[i] = (group->expand_cells > 0);
 513     }
 514
 515   /* This call implies flushing the request info */
 516   gtk_cell_area_box_init_groups (iter, priv->groups->len, expand_groups);
 517   g_free (expand_groups);
 518 }
 519
 520 static void
 521 init_iter_groups (GtkCellAreaBox *box)
 522 {
 523   GtkCellAreaBoxPrivate *priv = box->priv;
 524   GSList                *l;
 525
 526   /* When the box's groups are reconstructed, iters need to
 527    * be reinitialized.
 528    */
 529   for (l = priv->iters; l; l = l->next)
 530     {
 531       GtkCellAreaBoxIter *iter = l->data;
 532
 533       init_iter_group (box, iter);
 534     }
 535 }
 536
 537 static void
 538 flush_iters (GtkCellAreaBox *box)
 539 {
 540   GtkCellAreaBoxPrivate *priv = box->priv;
 541   GSList                *l;
 542
 543   /* When the box layout changes, iters need to
 544    * be flushed and sizes for the box get requested again
 545    */
 546   for (l = priv->iters; l; l = l->next)
 547     {
 548       GtkCellAreaIter *iter = l->data;
 549
 550       gtk_cell_area_iter_flush (iter);
 551     }
 552 }
 553
 554 /* Returns an allocation for each cell in the orientation of the box,
 555  * used in ->render()/->event() implementations to get a straight-forward
 556  * list of allocated cells to operate on.
 557  */
 558 static GSList *
 559 get_allocated_cells (GtkCellAreaBox     *box,
 560                      GtkCellAreaBoxIter *iter,
 561                      GtkWidget          *widget)
 562 {
 563   const GtkCellAreaBoxAllocation *group_allocs;
 564   GtkCellArea                    *area = GTK_CELL_AREA (box);
 565   GtkCellAreaBoxPrivate          *priv = box->priv;
 566   GList                          *cell_list;
 567   GSList                         *allocated_cells = NULL;
 568   gint                            i, j, n_allocs;
 569
 570   group_allocs = gtk_cell_area_box_iter_get_orientation_allocs (iter, &n_allocs);
 571   if (!group_allocs)
 572     {
 573       g_warning ("Trying to operate on an unallocated GtkCellAreaIter, "
 574                  "GtkCellAreaBox requires that the iter be allocated at least "
 575                  "in the orientation of the box");
 576       return NULL;
 577     }
 578
 579   for (i = 0; i < n_allocs; i++)
 580     {
 581       /* We dont always allocate all groups, sometimes the requested group has only invisible
 582        * cells for every row, hence the usage of group_allocs[i].group_idx here
 583        */
 584       CellGroup *group = &g_array_index (priv->groups, CellGroup, group_allocs[i].group_idx);
 585
 586       /* Exception for single cell groups */
 587       if (group->n_cells == 1)
 588         {
 589           CellInfo      *info = group->cells->data;
 590           AllocatedCell *cell =
 591             allocated_cell_new (info->renderer, group_allocs[i].position, group_allocs[i].size);
 592
 593           allocated_cells = g_slist_prepend (allocated_cells, cell);
 594         }
 595       else
 596         {
 597           GtkRequestedSize *sizes;
 598           gint              avail_size, position;
 599           gint              visible_cells, expand_cells;
 600           gint              extra_size, extra_extra;
 601
 602           visible_cells = count_visible_cells (group, &expand_cells);
 603
 604           /* If this row has no visible cells in this group, just
 605            * skip the allocation */
 606           if (visible_cells == 0)
 607             continue;
 608
 609           /* Offset the allocation to the group position and allocate into
 610            * the group's available size */
 611           position   = group_allocs[i].position;
 612           avail_size = group_allocs[i].size;
 613
 614           sizes = g_new (GtkRequestedSize, visible_cells);
 615
 616           for (j = 0, cell_list = group->cells; cell_list; cell_list = cell_list->next)
 617             {
 618               CellInfo *info = cell_list->data;
 619
 620               if (!gtk_cell_renderer_get_visible (info->renderer))
 621                 continue;
 622
 623               gtk_cell_area_request_renderer (area, info->renderer,
 624                                               priv->orientation,
 625                                               widget, -1,
 626                                               &sizes[j].minimum_size,
 627                                               &sizes[j].natural_size);
 628
 629               sizes[j].data = info;
 630               avail_size   -= sizes[j].minimum_size;
 631
 632               j++;
 633             }
 634
 635           /* Distribute cells naturally within the group */
 636           avail_size -= (visible_cells - 1) * priv->spacing;
 637           avail_size = gtk_distribute_natural_allocation (avail_size, visible_cells, sizes);
 638
 639           /* Calculate/distribute expand for cells */
 640           if (expand_cells > 0)
 641             {
 642               extra_size  = avail_size / expand_cells;
 643               extra_extra = avail_size % expand_cells;
 644             }
 645           else
 646             extra_size = extra_extra = 0;
 647
 648           /* Create the allocated cells (loop only over visible cells here) */
 649           for (j = 0; j < visible_cells; j++)
 650             {
 651               CellInfo      *info = sizes[j].data;
 652               AllocatedCell *cell;
 653
 654               if (info->expand)
 655                 {
 656                   sizes[j].minimum_size += extra_size;
 657                   if (extra_extra)
 658                     {
 659                       sizes[j].minimum_size++;
 660                       extra_extra--;
 661                     }
 662                 }
 663
 664               cell = allocated_cell_new (info->renderer, position, sizes[j].minimum_size);
 665
 666               allocated_cells = g_slist_prepend (allocated_cells, cell);
 667
 668               position += sizes[j].minimum_size;
 669               position += priv->spacing;
 670
 671               j++;
 672             }
 673
 674           g_free (sizes);
 675         }
 676     }
 677
 678   /* Note it might not be important to reverse the list here at all,
 679    * we have the correct positions, no need to allocate from left to right */
 680   return g_slist_reverse (allocated_cells);
 681 }
 682
 683 /*************************************************************
 684  *                      GObjectClass                         *
 685  *************************************************************/
 686 static void
 687 gtk_cell_area_box_finalize (GObject *object)
 688 {
 689   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (object);
 690   GtkCellAreaBoxPrivate *priv = box->priv;
 691   GSList                *l;
 692
 693   /* Unref/free the iter list */
 694   for (l = priv->iters; l; l = l->next)
 695     g_object_weak_unref (G_OBJECT (l->data), (GWeakNotify)iter_weak_notify, box);
 696
 697   g_slist_free (priv->iters);
 698   priv->iters = NULL;
 699
 700   /* Free the cell grouping info */
 701   cell_groups_clear (box);
 702   g_array_free (priv->groups, TRUE);
 703
 704   G_OBJECT_CLASS (gtk_cell_area_box_parent_class)->finalize (object);
 705 }
 706
 707 static void
 708 gtk_cell_area_box_dispose (GObject *object)
 709 {
 710   G_OBJECT_CLASS (gtk_cell_area_box_parent_class)->dispose (object);
 711 }
 712
 713 static void
 714 gtk_cell_area_box_set_property (GObject       *object,
 715                                 guint          prop_id,
 716                                 const GValue  *value,
 717                                 GParamSpec    *pspec)
 718 {
 719   GtkCellAreaBox *box = GTK_CELL_AREA_BOX (object);
 720
 721   switch (prop_id)
 722     {
 723     case PROP_ORIENTATION:
 724       box->priv->orientation = g_value_get_enum (value);
 725
 726       /* Notify that size needs to be requested again */
 727       flush_iters (box);
 728       break;
 729     case PROP_SPACING:
 730       gtk_cell_area_box_set_spacing (box, g_value_get_int (value));
 731       break;
 732     default:
 733       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 734       break;
 735     }
 736 }
 737
 738 static void
 739 gtk_cell_area_box_get_property (GObject     *object,
 740                                 guint        prop_id,
 741                                 GValue      *value,
 742                                 GParamSpec  *pspec)
 743 {
 744   GtkCellAreaBox *box = GTK_CELL_AREA_BOX (object);
 745
 746   switch (prop_id)
 747     {
 748     case PROP_ORIENTATION:
 749       g_value_set_enum (value, box->priv->orientation);
 750       break;
 751     case PROP_SPACING:
 752       g_value_set_int (value, gtk_cell_area_box_get_spacing (box));
 753       break;
 754     default:
 755       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 756       break;
 757     }
 758 }
 759
 760 /*************************************************************
 761  *                    GtkCellAreaClass                       *
 762  *************************************************************/
 763 static void
 764 gtk_cell_area_box_add (GtkCellArea        *area,
 765                        GtkCellRenderer    *renderer)
 766 {
 767   gtk_cell_area_box_pack_start (GTK_CELL_AREA_BOX (area),
 768                                 renderer, FALSE, TRUE);
 769 }
 770
 771 static void
 772 gtk_cell_area_box_remove (GtkCellArea        *area,
 773                           GtkCellRenderer    *renderer)
 774 {
 775   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 776   GtkCellAreaBoxPrivate *priv = box->priv;
 777   GList                 *node;
 778
 779   node = g_list_find_custom (priv->cells, renderer,
 780                              (GCompareFunc)cell_info_find);
 781
 782   if (node)
 783     {
 784       CellInfo *info = node->data;
 785
 786       cell_info_free (info);
 787
 788       priv->cells = g_list_delete_link (priv->cells, node);
 789
 790       /* Reconstruct cell groups */
 791       cell_groups_rebuild (box);
 792     }
 793   else
 794     g_warning ("Trying to remove a cell renderer that is not present GtkCellAreaBox");
 795 }
 796
 797 static void
 798 gtk_cell_area_box_forall (GtkCellArea        *area,
 799                           GtkCellCallback     callback,
 800                           gpointer            callback_data)
 801 {
 802   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 803   GtkCellAreaBoxPrivate *priv = box->priv;
 804   GList                 *list;
 805
 806   for (list = priv->cells; list; list = list->next)
 807     {
 808       CellInfo *info = list->data;
 809
 810       callback (info->renderer, callback_data);
 811     }
 812 }
 813
 814 static gint
 815 gtk_cell_area_box_event (GtkCellArea          *area,
 816                          GtkCellAreaIter      *iter,
 817                          GtkWidget            *widget,
 818                          GdkEvent             *event,
 819                          const GdkRectangle   *cell_area,
 820                          GtkCellRendererState  flags)
 821 {
 822
 823
 824   return 0;
 825 }
 826
 827 static void
 828 gtk_cell_area_box_render (GtkCellArea          *area,
 829                           GtkCellAreaIter      *iter,
 830                           GtkWidget            *widget,
 831                           cairo_t              *cr,
 832                           const GdkRectangle   *cell_area,
 833                           GtkCellRendererState  flags)
 834 {
 835   GtkCellAreaBox        *box      = GTK_CELL_AREA_BOX (area);
 836   GtkCellAreaBoxPrivate *priv     = box->priv;
 837   GtkCellAreaBoxIter    *box_iter = GTK_CELL_AREA_BOX_ITER (iter);
 838   GSList                *allocated_cells, *l;
 839   GdkRectangle           background_area, inner_area;
 840
 841   background_area = *cell_area;
 842
 843   /* Get a list of cells with allocation sizes decided regardless
 844    * of alignments and pack order etc. */
 845   allocated_cells = get_allocated_cells (box, box_iter, widget);
 846
 847   for (l = allocated_cells; l; l = l->next)
 848     {
 849       AllocatedCell *cell = l->data;
 850
 851       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
 852         {
 853           background_area.x     = cell_area->x + cell->position;
 854           background_area.width = cell->size;
 855         }
 856       else
 857         {
 858           background_area.y      = cell_area->y + cell->position;
 859           background_area.height = cell->size;
 860         }
 861
 862       /* Remove margins from the background area to produce the cell area
 863        */
 864       gtk_cell_area_inner_cell_area (area, &background_area, &inner_area);
 865
 866       /* XXX We have to do some per-cell considerations for the 'flags'
 867        * for focus handling */
 868       gtk_cell_renderer_render (cell->renderer, cr, widget,
 869                                 &background_area, &inner_area,
 870                                 flags);
 871
 872     }
 873
 874   g_slist_foreach (allocated_cells, (GFunc)allocated_cell_free, NULL);
 875   g_slist_free (allocated_cells);
 876 }
 877
 878 static void
 879 gtk_cell_area_box_set_cell_property (GtkCellArea        *area,
 880                                      GtkCellRenderer    *renderer,
 881                                      guint               prop_id,
 882                                      const GValue       *value,
 883                                      GParamSpec         *pspec)
 884 {
 885   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 886   GtkCellAreaBoxPrivate *priv = box->priv;
 887   GList                 *node;
 888   CellInfo              *info;
 889   gboolean               rebuild = FALSE;
 890   gboolean               flush = FALSE;
 891   gboolean               val;
 892   GtkPackType            pack_type;
 893
 894   node = g_list_find_custom (priv->cells, renderer,
 895                              (GCompareFunc)cell_info_find);
 896   if (!node)
 897     return;
 898
 899   info = node->data;
 900
 901   switch (prop_id)
 902     {
 903     case CELL_PROP_EXPAND:
 904       val = g_value_get_boolean (value);
 905
 906       if (info->expand != val)
 907         {
 908           info->expand = val;
 909           flush        = TRUE;
 910         }
 911       break;
 912
 913     case CELL_PROP_ALIGN:
 914       val = g_value_get_boolean (value);
 915
 916       if (info->align != val)
 917         {
 918           info->align = val;
 919           flush       = TRUE;
 920         }
 921       break;
 922
 923     case CELL_PROP_PACK_TYPE:
 924       pack_type = g_value_get_enum (value);
 925
 926       if (info->pack != pack_type)
 927         {
 928           info->pack = pack_type;
 929           rebuild    = TRUE;
 930         }
 931       break;
 932     default:
 933       GTK_CELL_AREA_WARN_INVALID_CHILD_PROPERTY_ID (area, prop_id, pspec);
 934       break;
 935     }
 936
 937   /* Groups need to be rebuilt */
 938   if (rebuild)
 939     {
 940       cell_groups_rebuild (box);
 941     }
 942   else if (flush)
 943     {
 944       flush_iters (box);
 945     }
 946 }
 947
 948 static void
 949 gtk_cell_area_box_get_cell_property (GtkCellArea        *area,
 950                                      GtkCellRenderer    *renderer,
 951                                      guint               prop_id,
 952                                      GValue             *value,
 953                                      GParamSpec         *pspec)
 954 {
 955   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 956   GtkCellAreaBoxPrivate *priv = box->priv;
 957   GList                 *node;
 958   CellInfo              *info;
 959
 960   node = g_list_find_custom (priv->cells, renderer,
 961                              (GCompareFunc)cell_info_find);
 962   if (!node)
 963     return;
 964
 965   info = node->data;
 966
 967   switch (prop_id)
 968     {
 969     case CELL_PROP_EXPAND:
 970       g_value_set_boolean (value, info->expand);
 971       break;
 972
 973     case CELL_PROP_ALIGN:
 974       g_value_set_boolean (value, info->align);
 975       break;
 976
 977     case CELL_PROP_PACK_TYPE:
 978       g_value_set_enum (value, info->pack);
 979       break;
 980     default:
 981       GTK_CELL_AREA_WARN_INVALID_CHILD_PROPERTY_ID (area, prop_id, pspec);
 982       break;
 983     }
 984 }
 985
 986
 987 static GtkCellAreaIter *
 988 gtk_cell_area_box_create_iter (GtkCellArea *area)
 989 {
 990   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 991   GtkCellAreaBoxPrivate *priv = box->priv;
 992   GtkCellAreaIter       *iter =
 993     (GtkCellAreaIter *)g_object_new (GTK_TYPE_CELL_AREA_BOX_ITER, NULL);
 994
 995   priv->iters = g_slist_prepend (priv->iters, iter);
 996
 997   g_object_weak_ref (G_OBJECT (iter), (GWeakNotify)iter_weak_notify, box);
 998
 999   /* Tell the new group about our cell layout */
1000   init_iter_group (box, GTK_CELL_AREA_BOX_ITER (iter));
1001
1002   return iter;
1003 }
1004
1005 static GtkSizeRequestMode
1006 gtk_cell_area_box_get_request_mode (GtkCellArea *area)
1007 {
1008   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
1009   GtkCellAreaBoxPrivate *priv = box->priv;
1010
1011   return (priv->orientation) == GTK_ORIENTATION_HORIZONTAL ?
1012     GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH :
1013     GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT;
1014 }
1015
1016 static void
1017 compute_size (GtkCellAreaBox     *box,
1018               GtkOrientation      orientation,
1019               GtkCellAreaBoxIter *iter,
1020               GtkWidget          *widget,
1021               gint                for_size,
1022               gint               *minimum_size,
1023               gint               *natural_size)
1024 {
1025   GtkCellAreaBoxPrivate *priv = box->priv;
1026   GtkCellArea           *area = GTK_CELL_AREA (box);
1027   GList                 *list;
1028   gint                   i;
1029   gint                   min_size = 0;
1030   gint                   nat_size = 0;
1031
1032   for (i = 0; i < priv->groups->len; i++)
1033     {
1034       CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
1035       gint       group_min_size = 0;
1036       gint       group_nat_size = 0;
1037
1038       for (list = group->cells; list; list = list->next)
1039         {
1040           CellInfo *info = list->data;
1041           gint      renderer_min_size, renderer_nat_size;
1042
1043           if (!gtk_cell_renderer_get_visible (info->renderer))
1044             continue;
1045
1046           gtk_cell_area_request_renderer (area, info->renderer, orientation, widget, for_size,
1047                                           &renderer_min_size, &renderer_nat_size);
1048
1049           if (orientation == priv->orientation)
1050             {
1051               if (min_size > 0)
1052                 {
1053                   min_size += priv->spacing;
1054                   nat_size += priv->spacing;
1055                 }
1056
1057               if (group_min_size > 0)
1058                 {
1059                   group_min_size += priv->spacing;
1060                   group_nat_size += priv->spacing;
1061                 }
1062
1063               min_size       += renderer_min_size;
1064               nat_size       += renderer_nat_size;
1065               group_min_size += renderer_min_size;
1066               group_nat_size += renderer_nat_size;
1067             }
1068           else
1069             {
1070               min_size       = MAX (min_size, renderer_min_size);
1071               nat_size       = MAX (nat_size, renderer_nat_size);
1072               group_min_size = MAX (group_min_size, renderer_min_size);
1073               group_nat_size = MAX (group_nat_size, renderer_nat_size);
1074             }
1075         }
1076
1077       if (orientation == GTK_ORIENTATION_HORIZONTAL)
1078         {
1079           if (for_size < 0)
1080             gtk_cell_area_box_iter_push_group_width (iter, group->id, group_min_size, group_nat_size);
1081           else
1082             gtk_cell_area_box_iter_push_group_width_for_height (iter, group->id, for_size,
1083                                                                 group_min_size, group_nat_size);
1084         }
1085       else
1086         {
1087           if (for_size < 0)
1088             gtk_cell_area_box_iter_push_group_height (iter, group->id, group_min_size, group_nat_size);
1089           else
1090             gtk_cell_area_box_iter_push_group_height_for_width (iter, group->id, for_size,
1091                                                                 group_min_size, group_nat_size);
1092         }
1093     }
1094
1095   *minimum_size = min_size;
1096   *natural_size = nat_size;
1097 }
1098
1099 GtkRequestedSize *
1100 get_group_sizes (GtkCellArea    *area,
1101                  CellGroup      *group,
1102                  GtkOrientation  orientation,
1103                  GtkWidget      *widget,
1104                  gint           *n_sizes)
1105 {
1106   GtkRequestedSize *sizes;
1107   GList            *l;
1108   gint              i;
1109
1110   *n_sizes = count_visible_cells (group, NULL);
1111   sizes    = g_new (GtkRequestedSize, *n_sizes);
1112
1113   for (l = group->cells, i = 0; l; l = l->next)
1114     {
1115       CellInfo *info = l->data;
1116
1117       if (!gtk_cell_renderer_get_visible (info->renderer))
1118         continue;
1119
1120       sizes[i].data = info;
1121
1122       gtk_cell_area_request_renderer (area, info->renderer,
1123                                       orientation, widget, -1,
1124                                       &sizes[i].minimum_size,
1125                                       &sizes[i].natural_size);
1126
1127       i++;
1128     }
1129
1130   return sizes;
1131 }
1132
1133 static void
1134 compute_group_size_for_opposing_orientation (GtkCellAreaBox     *box,
1135                                              CellGroup          *group,
1136                                              GtkWidget          *widget,
1137                                              gint                for_size,
1138                                              gint               *minimum_size,
1139                                              gint               *natural_size)
1140 {
1141   GtkCellAreaBoxPrivate *priv = box->priv;
1142   GtkCellArea           *area = GTK_CELL_AREA (box);
1143
1144   /* Exception for single cell groups */
1145   if (group->n_cells == 1)
1146     {
1147       CellInfo *info = group->cells->data;
1148
1149       gtk_cell_area_request_renderer (area, info->renderer,
1150                                       OPPOSITE_ORIENTATION (priv->orientation),
1151                                       widget, for_size, minimum_size, natural_size);
1152     }
1153   else
1154     {
1155       GtkRequestedSize *orientation_sizes;
1156       CellInfo         *info;
1157       gint              n_sizes, i;
1158       gint              avail_size     = for_size;
1159       gint              extra_size, extra_extra;
1160       gint              min_size = 0, nat_size = 0;
1161
1162       orientation_sizes = get_group_sizes (area, group, priv->orientation, widget, &n_sizes);
1163
1164       /* First naturally allocate the cells in the group into the for_size */
1165       avail_size -= (n_sizes - 1) * priv->spacing;
1166       for (i = 0; i < n_sizes; i++)
1167         avail_size -= orientation_sizes[i].minimum_size;
1168
1169       avail_size = gtk_distribute_natural_allocation (avail_size, n_sizes, orientation_sizes);
1170
1171       /* Calculate/distribute expand for cells */
1172       if (group->expand_cells > 0)
1173         {
1174           extra_size  = avail_size / group->expand_cells;
1175           extra_extra = avail_size % group->expand_cells;
1176         }
1177       else
1178         extra_size = extra_extra = 0;
1179
1180       for (i = 0; i < n_sizes; i++)
1181         {
1182           gint cell_min, cell_nat;
1183
1184           info = orientation_sizes[i].data;
1185
1186           if (info->expand)
1187             {
1188               orientation_sizes[i].minimum_size += extra_size;
1189               if (extra_extra)
1190                 {
1191                   orientation_sizes[i].minimum_size++;
1192                   extra_extra--;
1193                 }
1194             }
1195
1196           gtk_cell_area_request_renderer (area, info->renderer,
1197                                           OPPOSITE_ORIENTATION (priv->orientation),
1198                                           widget,
1199                                           orientation_sizes[i].minimum_size,
1200                                           &cell_min, &cell_nat);
1201
1202           min_size = MAX (min_size, cell_min);
1203           nat_size = MAX (nat_size, cell_nat);
1204         }
1205
1206       *minimum_size = min_size;
1207       *natural_size = nat_size;
1208
1209       g_free (orientation_sizes);
1210     }
1211 }
1212
1213 static void
1214 compute_size_for_opposing_orientation (GtkCellAreaBox     *box,
1215                                        GtkCellAreaBoxIter *iter,
1216                                        GtkWidget          *widget,
1217                                        gint                for_size,
1218                                        gint               *minimum_size,
1219                                        gint               *natural_size)
1220 {
1221   GtkCellAreaBoxPrivate *priv = box->priv;
1222   CellGroup             *group;
1223   GtkRequestedSize      *orientation_sizes;
1224   gint                   n_groups, n_expand_groups, i;
1225   gint                   avail_size = for_size;
1226   gint                   extra_size, extra_extra;
1227   gint                   min_size = 0, nat_size = 0;
1228
1229   n_expand_groups = count_expand_groups (box);
1230
1231   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1232     orientation_sizes = gtk_cell_area_box_iter_get_widths (iter, &n_groups);
1233   else
1234     orientation_sizes = gtk_cell_area_box_iter_get_heights (iter, &n_groups);
1235
1236   /* First start by naturally allocating space among groups of cells */
1237   avail_size -= (n_groups - 1) * priv->spacing;
1238   for (i = 0; i < n_groups; i++)
1239     avail_size -= orientation_sizes[i].minimum_size;
1240
1241   avail_size = gtk_distribute_natural_allocation (avail_size, n_groups, orientation_sizes);
1242
1243   /* Calculate/distribute expand for groups */
1244   if (n_expand_groups > 0)
1245     {
1246       extra_size  = avail_size / n_expand_groups;
1247       extra_extra = avail_size % n_expand_groups;
1248     }
1249   else
1250     extra_size = extra_extra = 0;
1251
1252   /* Now we need to naturally allocate sizes for cells in each group
1253    * and push the height-for-width for each group accordingly while accumulating
1254    * the overall height-for-width for this row.
1255    */
1256   for (i = 0; i < n_groups; i++)
1257     {
1258       gint group_min, group_nat;
1259       gint group_idx = GPOINTER_TO_INT (orientation_sizes[i].data);
1260
1261       group = &g_array_index (priv->groups, CellGroup, group_idx);
1262
1263       if (group->expand_cells > 0)
1264         {
1265           orientation_sizes[i].minimum_size += extra_size;
1266           if (extra_extra)
1267             {
1268               orientation_sizes[i].minimum_size++;
1269               extra_extra--;
1270             }
1271         }
1272
1273       /* Now we have the allocation for the group, request it's height-for-width */
1274       compute_group_size_for_opposing_orientation (box, group, widget,
1275                                                    orientation_sizes[i].minimum_size,
1276                                                    &group_min, &group_nat);
1277
1278       min_size = MAX (min_size, group_min);
1279       nat_size = MAX (nat_size, group_nat);
1280
1281       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1282         {
1283           gtk_cell_area_box_iter_push_group_height_for_width (iter, group_idx, for_size,
1284                                                               group_min, group_nat);
1285         }
1286       else
1287         {
1288           gtk_cell_area_box_iter_push_group_width_for_height (iter, group_idx, for_size,
1289                                                               group_min, group_nat);
1290         }
1291     }
1292
1293   *minimum_size = min_size;
1294   *natural_size = nat_size;
1295
1296   g_free (orientation_sizes);
1297 }
1298
1299
1300
1301 static void
1302 gtk_cell_area_box_get_preferred_width (GtkCellArea        *area,
1303                                        GtkCellAreaIter    *iter,
1304                                        GtkWidget          *widget,
1305                                        gint               *minimum_width,
1306                                        gint               *natural_width)
1307 {
1308   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1309   GtkCellAreaBoxIter    *box_iter;
1310   gint                   min_width, nat_width;
1311
1312   g_return_if_fail (GTK_IS_CELL_AREA_BOX_ITER (iter));
1313
1314   box_iter = GTK_CELL_AREA_BOX_ITER (iter);
1315
1316   /* Compute the size of all renderers for current row data,
1317    * bumping cell alignments in the iter along the way */
1318   compute_size (box, GTK_ORIENTATION_HORIZONTAL,
1319                 box_iter, widget, -1, &min_width, &nat_width);
1320
1321   if (minimum_width)
1322     *minimum_width = min_width;
1323
1324   if (natural_width)
1325     *natural_width = nat_width;
1326 }
1327
1328 static void
1329 gtk_cell_area_box_get_preferred_height (GtkCellArea        *area,
1330                                         GtkCellAreaIter    *iter,
1331                                         GtkWidget          *widget,
1332                                         gint               *minimum_height,
1333                                         gint               *natural_height)
1334 {
1335   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1336   GtkCellAreaBoxIter    *box_iter;
1337   gint                   min_height, nat_height;
1338
1339   g_return_if_fail (GTK_IS_CELL_AREA_BOX_ITER (iter));
1340
1341   box_iter = GTK_CELL_AREA_BOX_ITER (iter);
1342
1343   /* Compute the size of all renderers for current row data,
1344    * bumping cell alignments in the iter along the way */
1345   compute_size (box, GTK_ORIENTATION_VERTICAL,
1346                 box_iter, widget, -1, &min_height, &nat_height);
1347
1348   if (minimum_height)
1349     *minimum_height = min_height;
1350
1351   if (natural_height)
1352     *natural_height = nat_height;
1353 }
1354
1355 static void
1356 gtk_cell_area_box_get_preferred_height_for_width (GtkCellArea        *area,
1357                                                   GtkCellAreaIter    *iter,
1358                                                   GtkWidget          *widget,
1359                                                   gint                width,
1360                                                   gint               *minimum_height,
1361                                                   gint               *natural_height)
1362 {
1363   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1364   GtkCellAreaBoxIter    *box_iter;
1365   GtkCellAreaBoxPrivate *priv;
1366   gint                   min_height, nat_height;
1367
1368   g_return_if_fail (GTK_IS_CELL_AREA_BOX_ITER (iter));
1369
1370   box_iter = GTK_CELL_AREA_BOX_ITER (iter);
1371   priv     = box->priv;
1372
1373   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
1374     {
1375       /* Add up vertical requests of height for width and push the overall
1376        * cached sizes for alignments */
1377       compute_size (box, priv->orientation, box_iter, widget, width, &min_height, &nat_height);
1378     }
1379   else
1380     {
1381       /* Juice: virtually allocate cells into the for_width using the
1382        * alignments and then return the overall height for that width, and cache it */
1383       compute_size_for_opposing_orientation (box, box_iter, widget, width, &min_height, &nat_height);
1384     }
1385
1386   if (minimum_height)
1387     *minimum_height = min_height;
1388
1389   if (natural_height)
1390     *natural_height = nat_height;
1391 }
1392
1393 static void
1394 gtk_cell_area_box_get_preferred_width_for_height (GtkCellArea        *area,
1395                                                   GtkCellAreaIter    *iter,
1396                                                   GtkWidget          *widget,
1397                                                   gint                height,
1398                                                   gint               *minimum_width,
1399                                                   gint               *natural_width)
1400 {
1401   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1402   GtkCellAreaBoxIter    *box_iter;
1403   GtkCellAreaBoxPrivate *priv;
1404   gint                   min_width, nat_width;
1405
1406   g_return_if_fail (GTK_IS_CELL_AREA_BOX_ITER (iter));
1407
1408   box_iter = GTK_CELL_AREA_BOX_ITER (iter);
1409   priv     = box->priv;
1410
1411   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1412     {
1413       /* Add up horizontal requests of width for height and push the overall
1414        * cached sizes for alignments */
1415       compute_size (box, priv->orientation, box_iter, widget, height, &min_width, &nat_width);
1416     }
1417   else
1418     {
1419       /* Juice: horizontally allocate cells into the for_height using the
1420        * alignments and then return the overall width for that height, and cache it */
1421       compute_size_for_opposing_orientation (box, box_iter, widget, height, &min_width, &nat_width);
1422     }
1423
1424   if (minimum_width)
1425     *minimum_width = min_width;
1426
1427   if (natural_width)
1428     *natural_width = nat_width;
1429 }
1430
1431 static void
1432 gtk_cell_area_box_grab_focus (GtkCellArea      *area,
1433                               GtkDirectionType  direction)
1434 {
1435   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1436   GtkCellAreaBoxPrivate *priv;
1437   gboolean               first_cell = FALSE;
1438   gint                   i;
1439   GList                 *list;
1440
1441   priv = box->priv;
1442
1443   switch (direction)
1444     {
1445     case GTK_DIR_TAB_FORWARD:
1446     case GTK_DIR_DOWN:
1447     case GTK_DIR_RIGHT:
1448       first_cell = TRUE;
1449       break;
1450
1451     case GTK_DIR_TAB_BACKWARD:
1452     case GTK_DIR_UP:
1453     case GTK_DIR_LEFT:
1454     default:
1455       first_cell = FALSE;
1456       break;
1457     }
1458
1459   for (i = first_cell ? 0 : priv->groups->len -1;
1460        i >= 0 && i < priv->groups->len;
1461        i = first_cell ? i + 1 : i - 1)
1462     {
1463       CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
1464
1465       for (list = first_cell ? g_list_first (group->cells) : g_list_last (group->cells);
1466            list; list = first_cell ? list->next : list->prev)
1467         {
1468           CellInfo *info = list->data;
1469
1470           if (gtk_cell_renderer_can_focus (info->renderer))
1471             {
1472               gtk_cell_area_set_focus_cell (area, info->renderer);
1473               break;
1474             }
1475         }
1476     }
1477 }
1478
1479
1480 /*************************************************************
1481  *                    GtkCellLayoutIface                     *
1482  *************************************************************/
1483 static void
1484 gtk_cell_area_box_cell_layout_init (GtkCellLayoutIface *iface)
1485 {
1486   iface->pack_start = gtk_cell_area_box_layout_pack_start;
1487   iface->pack_end   = gtk_cell_area_box_layout_pack_end;
1488   iface->reorder    = gtk_cell_area_box_layout_reorder;
1489 }
1490
1491 static void
1492 gtk_cell_area_box_layout_pack_start (GtkCellLayout      *cell_layout,
1493                                      GtkCellRenderer    *renderer,
1494                                      gboolean            expand)
1495 {
1496   gtk_cell_area_box_pack_start (GTK_CELL_AREA_BOX (cell_layout), renderer, expand, TRUE);
1497 }
1498
1499 static void
1500 gtk_cell_area_box_layout_pack_end (GtkCellLayout      *cell_layout,
1501                                    GtkCellRenderer    *renderer,
1502                                    gboolean            expand)
1503 {
1504   gtk_cell_area_box_pack_end (GTK_CELL_AREA_BOX (cell_layout), renderer, expand, TRUE);
1505 }
1506
1507 static void
1508 gtk_cell_area_box_layout_reorder (GtkCellLayout      *cell_layout,
1509                                   GtkCellRenderer    *renderer,
1510                                   gint                position)
1511 {
1512   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (cell_layout);
1513   GtkCellAreaBoxPrivate *priv = box->priv;
1514   GList                 *node;
1515   CellInfo              *info;
1516
1517   node = g_list_find_custom (priv->cells, renderer,
1518                              (GCompareFunc)cell_info_find);
1519
1520   if (node)
1521     {
1522       info = node->data;
1523
1524       priv->cells = g_list_delete_link (priv->cells, node);
1525       priv->cells = g_list_insert (priv->cells, info, position);
1526
1527       cell_groups_rebuild (box);
1528     }
1529 }
1530
1531 /*************************************************************
1532  *                            API                            *
1533  *************************************************************/
1534 GtkCellArea *
1535 gtk_cell_area_box_new (void)
1536 {
1537   return (GtkCellArea *)g_object_new (GTK_TYPE_CELL_AREA_BOX, NULL);
1538 }
1539
1540 void
1541 gtk_cell_area_box_pack_start  (GtkCellAreaBox  *box,
1542                                GtkCellRenderer *renderer,
1543                                gboolean         expand,
1544                                gboolean         align)
1545 {
1546   GtkCellAreaBoxPrivate *priv;
1547   CellInfo              *info;
1548
1549   g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
1550   g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
1551
1552   priv = box->priv;
1553
1554   if (g_list_find_custom (priv->cells, renderer,
1555                           (GCompareFunc)cell_info_find))
1556     {
1557       g_warning ("Refusing to add the same cell renderer to a GtkCellAreaBox twice");
1558       return;
1559     }
1560
1561   info = cell_info_new (renderer, GTK_PACK_START, expand, align);
1562
1563   priv->cells = g_list_append (priv->cells, info);
1564
1565   cell_groups_rebuild (box);
1566 }
1567
1568 void
1569 gtk_cell_area_box_pack_end (GtkCellAreaBox  *box,
1570                             GtkCellRenderer *renderer,
1571                             gboolean         expand,
1572                             gboolean         align)
1573 {
1574   GtkCellAreaBoxPrivate *priv;
1575   CellInfo              *info;
1576
1577   g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
1578   g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
1579
1580   priv = box->priv;
1581
1582   if (g_list_find_custom (priv->cells, renderer,
1583                           (GCompareFunc)cell_info_find))
1584     {
1585       g_warning ("Refusing to add the same cell renderer to a GtkCellArea twice");
1586       return;
1587     }
1588
1589   info = cell_info_new (renderer, GTK_PACK_END, expand, align);
1590
1591   priv->cells = g_list_append (priv->cells, info);
1592
1593   cell_groups_rebuild (box);
1594 }
1595
1596 gint
1597 gtk_cell_area_box_get_spacing (GtkCellAreaBox  *box)
1598 {
1599   g_return_val_if_fail (GTK_IS_CELL_AREA_BOX (box), 0);
1600
1601   return box->priv->spacing;
1602 }
1603
1604 void
1605 gtk_cell_area_box_set_spacing (GtkCellAreaBox  *box,
1606                                gint             spacing)
1607 {
1608   GtkCellAreaBoxPrivate *priv;
1609
1610   g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
1611
1612   priv = box->priv;
1613
1614   if (priv->spacing != spacing)
1615     {
1616       priv->spacing = spacing;
1617
1618       g_object_notify (G_OBJECT (box), "spacing");
1619
1620       /* Notify that size needs to be requested again */
1621       flush_iters (box);
1622     }
1623 }