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
  66 static void      gtk_cell_area_box_set_cell_property              (GtkCellArea          *area,
  67                                                                    GtkCellRenderer      *renderer,
  68                                                                    guint                 prop_id,
  69                                                                    const GValue         *value,
  70                                                                    GParamSpec           *pspec);
  71 static void      gtk_cell_area_box_get_cell_property              (GtkCellArea          *area,
  72                                                                    GtkCellRenderer      *renderer,
  73                                                                    guint                 prop_id,
  74                                                                    GValue               *value,
  75                                                                    GParamSpec           *pspec);
  76
  77 static GtkCellAreaIter    *gtk_cell_area_box_create_iter          (GtkCellArea          *area);
  78 static GtkSizeRequestMode  gtk_cell_area_box_get_request_mode     (GtkCellArea          *area);
  79 static void      gtk_cell_area_box_get_preferred_width            (GtkCellArea          *area,
  80                                                                    GtkCellAreaIter      *iter,
  81                                                                    GtkWidget            *widget,
  82                                                                    gint                 *minimum_width,
  83                                                                    gint                 *natural_width);
  84 static void      gtk_cell_area_box_get_preferred_height           (GtkCellArea          *area,
  85                                                                    GtkCellAreaIter      *iter,
  86                                                                    GtkWidget            *widget,
  87                                                                    gint                 *minimum_height,
  88                                                                    gint                 *natural_height);
  89 static void      gtk_cell_area_box_get_preferred_height_for_width (GtkCellArea          *area,
  90                                                                    GtkCellAreaIter      *iter,
  91                                                                    GtkWidget            *widget,
  92                                                                    gint                  width,
  93                                                                    gint                 *minimum_height,
  94                                                                    gint                 *natural_height);
  95 static void      gtk_cell_area_box_get_preferred_width_for_height (GtkCellArea          *area,
  96                                                                    GtkCellAreaIter      *iter,
  97                                                                    GtkWidget            *widget,
  98                                                                    gint                  height,
  99                                                                    gint                 *minimum_width,
 100                                                                    gint                 *natural_width);
 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 static CellGroup     *cell_group_new         (guint               id);
 147 static void           cell_group_free        (CellGroup          *group);
 148 static AllocatedCell *allocated_cell_new     (GtkCellRenderer    *renderer,
 149                                               gint                position,
 150                                               gint                size);
 151 static void           allocated_cell_free    (AllocatedCell      *cell);
 152 static GList         *list_consecutive_cells (GtkCellAreaBox     *box);
 153 static GList         *construct_cell_groups  (GtkCellAreaBox     *box);
 154 static gint           count_expand_groups    (GtkCellAreaBox     *box);
 155 static void           iter_weak_notify       (GtkCellAreaBox     *box,
 156                                               GtkCellAreaBoxIter *dead_iter);
 157 static void           flush_iters            (GtkCellAreaBox     *box);
 158 static void           init_iter_groups       (GtkCellAreaBox     *box);
 159 static void           init_iter_group        (GtkCellAreaBox     *box,
 160                                               GtkCellAreaBoxIter *iter);
 161 static GSList        *get_allocated_cells    (GtkCellAreaBox     *box,
 162                                               GtkCellAreaBoxIter *iter,
 163                                               GtkWidget          *widget);
 164
 165
 166 struct _GtkCellAreaBoxPrivate
 167 {
 168   GtkOrientation  orientation;
 169
 170   GList          *cells;
 171   GList          *groups;
 172
 173   GSList         *iters;
 174
 175   gint            spacing;
 176 };
 177
 178 enum {
 179   PROP_0,
 180   PROP_ORIENTATION,
 181   PROP_SPACING
 182 };
 183
 184 enum {
 185   CELL_PROP_0,
 186   CELL_PROP_EXPAND,
 187   CELL_PROP_ALIGN,
 188   CELL_PROP_PACK_TYPE
 189 };
 190
 191 G_DEFINE_TYPE_WITH_CODE (GtkCellAreaBox, gtk_cell_area_box, GTK_TYPE_CELL_AREA,
 192                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 193                                                 gtk_cell_area_box_cell_layout_init)
 194                          G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL));
 195
 196 #define OPPOSITE_ORIENTATION(orientation)                       \
 197   ((orientation) == GTK_ORIENTATION_HORIZONTAL ?                \
 198    GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL)
 199
 200 static void
 201 gtk_cell_area_box_init (GtkCellAreaBox *box)
 202 {
 203   GtkCellAreaBoxPrivate *priv;
 204
 205   box->priv = G_TYPE_INSTANCE_GET_PRIVATE (box,
 206                                            GTK_TYPE_CELL_AREA_BOX,
 207                                            GtkCellAreaBoxPrivate);
 208   priv = box->priv;
 209
 210   priv->orientation = GTK_ORIENTATION_HORIZONTAL;
 211   priv->cells       = NULL;
 212   priv->groups      = NULL;
 213   priv->iters       = NULL;
 214   priv->spacing     = 0;
 215 }
 216
 217 static void
 218 gtk_cell_area_box_class_init (GtkCellAreaBoxClass *class)
 219 {
 220   GObjectClass     *object_class = G_OBJECT_CLASS (class);
 221   GtkCellAreaClass *area_class   = GTK_CELL_AREA_CLASS (class);
 222
 223   /* GObjectClass */
 224   object_class->finalize     = gtk_cell_area_box_finalize;
 225   object_class->dispose      = gtk_cell_area_box_dispose;
 226   object_class->set_property = gtk_cell_area_box_set_property;
 227   object_class->get_property = gtk_cell_area_box_get_property;
 228
 229   /* GtkCellAreaClass */
 230   area_class->add               = gtk_cell_area_box_add;
 231   area_class->remove            = gtk_cell_area_box_remove;
 232   area_class->forall            = gtk_cell_area_box_forall;
 233   area_class->event             = gtk_cell_area_box_event;
 234   area_class->render            = gtk_cell_area_box_render;
 235   area_class->set_cell_property = gtk_cell_area_box_set_cell_property;
 236   area_class->get_cell_property = gtk_cell_area_box_get_cell_property;
 237
 238   area_class->create_iter                    = gtk_cell_area_box_create_iter;
 239   area_class->get_request_mode               = gtk_cell_area_box_get_request_mode;
 240   area_class->get_preferred_width            = gtk_cell_area_box_get_preferred_width;
 241   area_class->get_preferred_height           = gtk_cell_area_box_get_preferred_height;
 242   area_class->get_preferred_height_for_width = gtk_cell_area_box_get_preferred_height_for_width;
 243   area_class->get_preferred_width_for_height = gtk_cell_area_box_get_preferred_width_for_height;
 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 CellGroup *
 326 cell_group_new (guint id)
 327 {
 328   CellGroup *group = g_slice_new0 (CellGroup);
 329
 330   group->id = id;
 331
 332   return group;
 333 }
 334
 335 static void
 336 cell_group_free (CellGroup *group)
 337 {
 338   g_list_free (group->cells);
 339   g_slice_free (CellGroup, group);
 340 }
 341
 342 static AllocatedCell *
 343 allocated_cell_new (GtkCellRenderer *renderer,
 344                     gint             position,
 345                     gint             size)
 346 {
 347   AllocatedCell *cell = g_slice_new (AllocatedCell);
 348
 349   cell->renderer = renderer;
 350   cell->position = position;
 351   cell->size     = size;
 352
 353   return cell;
 354 }
 355
 356 static void
 357 allocated_cell_free (AllocatedCell *cell)
 358 {
 359   g_slice_free (AllocatedCell, cell);
 360 }
 361
 362 static GList *
 363 list_consecutive_cells (GtkCellAreaBox *box)
 364 {
 365   GtkCellAreaBoxPrivate *priv = box->priv;
 366   GList                 *l, *consecutive_cells = NULL, *pack_end_cells = NULL;
 367   CellInfo              *info;
 368
 369   /* List cells in consecutive order taking their
 370    * PACK_START/PACK_END options into account
 371    */
 372   for (l = priv->cells; l; l = l->next)
 373     {
 374       info = l->data;
 375
 376       if (info->pack == GTK_PACK_START)
 377         consecutive_cells = g_list_prepend (consecutive_cells, info);
 378     }
 379
 380   for (l = priv->cells; l; l = l->next)
 381     {
 382       info = l->data;
 383
 384       if (info->pack == GTK_PACK_END)
 385         pack_end_cells = g_list_prepend (pack_end_cells, info);
 386     }
 387
 388   consecutive_cells = g_list_reverse (consecutive_cells);
 389   consecutive_cells = g_list_concat (consecutive_cells, pack_end_cells);
 390
 391   return consecutive_cells;
 392 }
 393
 394 static GList *
 395 construct_cell_groups (GtkCellAreaBox  *box)
 396 {
 397   GtkCellAreaBoxPrivate *priv = box->priv;
 398   CellGroup             *group;
 399   GList                 *cells, *l;
 400   GList                 *groups = NULL;
 401   guint                  id = 0;
 402
 403   if (!priv->cells)
 404     return NULL;
 405
 406   cells  = list_consecutive_cells (box);
 407   group  = cell_group_new (id++);
 408   groups = g_list_prepend (groups, group);
 409
 410   for (l = cells; l; l = l->next)
 411     {
 412       CellInfo *info = l->data;
 413
 414       /* A new group starts with any aligned cell, the first group is implied */
 415       if (info->align && l != cells)
 416         {
 417           group  = cell_group_new (id++);
 418           groups = g_list_prepend (groups, group);
 419         }
 420
 421       group->cells = g_list_prepend (group->cells, info);
 422       group->n_cells++;
 423
 424       /* A group expands if it contains any expand cells */
 425       if (info->expand)
 426         group->expand_cells ++;
 427     }
 428
 429   g_list_free (cells);
 430
 431   for (l = cells; l; l = l->next)
 432     {
 433       group = l->data;
 434       group->cells = g_list_reverse (group->cells);
 435     }
 436
 437   return g_list_reverse (groups);
 438 }
 439
 440 static gint
 441 count_expand_groups (GtkCellAreaBox  *box)
 442 {
 443   GtkCellAreaBoxPrivate *priv = box->priv;
 444   GList                 *l;
 445   gint                   expand_groups = 0;
 446
 447   for (l = priv->groups; l; l = l->next)
 448     {
 449       CellGroup *group = l->data;
 450
 451       if (group->expand_cells > 0)
 452         expand_groups++;
 453     }
 454
 455   return expand_groups;
 456 }
 457
 458 static void
 459 iter_weak_notify (GtkCellAreaBox     *box,
 460                   GtkCellAreaBoxIter *dead_iter)
 461 {
 462   GtkCellAreaBoxPrivate *priv = box->priv;
 463
 464   priv->iters = g_slist_remove (priv->iters, dead_iter);
 465 }
 466
 467 static void
 468 init_iter_group (GtkCellAreaBox     *box,
 469                  GtkCellAreaBoxIter *iter)
 470 {
 471   GtkCellAreaBoxPrivate *priv = box->priv;
 472   gint                   n_groups, *expand_groups, i;
 473   GList                 *l;
 474
 475   n_groups      = g_list_length (priv->groups);
 476   expand_groups = g_new (gboolean, n_groups);
 477
 478   for (i = 0, l = priv->groups; l; l = l->next, i++)
 479     {
 480       CellGroup *group = l->data;
 481
 482       expand_groups[i] = (group->expand_cells > 0);
 483     }
 484
 485   gtk_cell_area_box_init_groups (iter, n_groups, expand_groups);
 486   g_free (expand_groups);
 487 }
 488
 489 static void
 490 init_iter_groups (GtkCellAreaBox *box)
 491 {
 492   GtkCellAreaBoxPrivate *priv = box->priv;
 493   GSList                *l;
 494
 495   /* When the box's groups are reconstructed, iters need to
 496    * be reinitialized.
 497    */
 498   for (l = priv->iters; l; l = l->next)
 499     {
 500       GtkCellAreaBoxIter *iter = l->data;
 501
 502       init_iter_group (box, iter);
 503     }
 504 }
 505
 506 static void
 507 flush_iters (GtkCellAreaBox *box)
 508 {
 509   GtkCellAreaBoxPrivate *priv = box->priv;
 510   GSList                *l;
 511
 512   /* When the box layout changes, iters need to
 513    * be flushed and sizes for the box get requested again
 514    */
 515   for (l = priv->iters; l; l = l->next)
 516     {
 517       GtkCellAreaIter *iter = l->data;
 518
 519       gtk_cell_area_iter_flush (iter);
 520     }
 521 }
 522
 523 /* Returns an allocation for each cell in the orientation of the box,
 524  * used in ->render()/->event() implementations to get a straight-forward
 525  * list of allocated cells to operate on.
 526  */
 527 static GSList *
 528 get_allocated_cells (GtkCellAreaBox     *box,
 529                      GtkCellAreaBoxIter *iter,
 530                      GtkWidget          *widget)
 531 {
 532   const GtkCellAreaBoxAllocation *group_allocs;
 533   GtkCellArea                    *area = GTK_CELL_AREA (box);
 534   GtkCellAreaBoxPrivate          *priv = box->priv;
 535   GList                          *group_list, *cell_list;
 536   GSList                         *allocated_cells = NULL;
 537   gint                            i, j, n_allocs;
 538
 539   group_allocs = gtk_cell_area_box_iter_get_orientation_allocs (iter, &n_allocs);
 540   if (!group_allocs)
 541     {
 542       g_warning ("Trying to operate on an unallocated GtkCellAreaIter, "
 543                  "GtkCellAreaBox requires that the iter be allocated at least "
 544                  "in the orientation of the box");
 545       return NULL;
 546     }
 547
 548   for (i = 0, group_list = priv->groups; group_list; i++, group_list = group_list->next)
 549     {
 550       CellGroup *group = group_list->data;
 551
 552       /* Exception for single cell groups */
 553       if (group->n_cells == 1)
 554         {
 555           CellInfo      *info = group->cells->data;
 556           AllocatedCell *cell =
 557             allocated_cell_new (info->renderer, group_allocs[i].position, group_allocs[i].size);
 558
 559           allocated_cells = g_slist_prepend (allocated_cells, cell);
 560         }
 561       else
 562         {
 563           GtkRequestedSize *sizes      = g_new (GtkRequestedSize, group->n_cells);
 564           gint              avail_size = group_allocs[i].size;
 565           gint              position   = group_allocs[i].position;
 566           gint              extra_size, extra_extra;
 567
 568           for (j = 0, cell_list = group->cells; cell_list; j++, cell_list = cell_list->next)
 569             {
 570               CellInfo *info = cell_list->data;
 571
 572               gtk_cell_area_request_renderer (area, info->renderer,
 573                                               priv->orientation,
 574                                               widget, -1,
 575                                               &sizes[j].minimum_size,
 576                                               &sizes[j].natural_size);
 577
 578               avail_size -= sizes[j].minimum_size;
 579             }
 580
 581           /* Distribute cells naturally within the group */
 582           avail_size -= (group->n_cells - 1) * priv->spacing;
 583           avail_size = gtk_distribute_natural_allocation (avail_size, group->n_cells, sizes);
 584
 585           /* Calculate/distribute expand for cells */
 586           if (group->expand_cells > 0)
 587             {
 588               extra_size  = avail_size / group->expand_cells;
 589               extra_extra = avail_size % group->expand_cells;
 590             }
 591           else
 592             extra_size = extra_extra = 0;
 593
 594           /* Create the allocated cells */
 595           for (j = 0, cell_list = group->cells; cell_list; j++, cell_list = cell_list->next)
 596             {
 597               CellInfo      *info = cell_list->data;
 598               AllocatedCell *cell;
 599
 600               if (info->expand)
 601                 {
 602                   sizes[j].minimum_size += extra_size;
 603                   if (extra_extra)
 604                     {
 605                       sizes[j].minimum_size++;
 606                       extra_extra--;
 607                     }
 608                 }
 609
 610               cell = allocated_cell_new (info->renderer, position, sizes[j].minimum_size);
 611
 612               allocated_cells = g_slist_prepend (allocated_cells, cell);
 613
 614               position += sizes[j].minimum_size;
 615               position += priv->spacing;
 616             }
 617
 618           g_free (sizes);
 619         }
 620     }
 621
 622   return g_slist_reverse (allocated_cells);
 623 }
 624
 625 /*************************************************************
 626  *                      GObjectClass                         *
 627  *************************************************************/
 628 static void
 629 gtk_cell_area_box_finalize (GObject *object)
 630 {
 631   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (object);
 632   GtkCellAreaBoxPrivate *priv = box->priv;
 633   GSList                *l;
 634
 635   for (l = priv->iters; l; l = l->next)
 636     g_object_weak_unref (G_OBJECT (l->data), (GWeakNotify)iter_weak_notify, box);
 637
 638   g_slist_free (priv->iters);
 639
 640   G_OBJECT_CLASS (gtk_cell_area_box_parent_class)->finalize (object);
 641 }
 642
 643 static void
 644 gtk_cell_area_box_dispose (GObject *object)
 645 {
 646   G_OBJECT_CLASS (gtk_cell_area_box_parent_class)->dispose (object);
 647 }
 648
 649 static void
 650 gtk_cell_area_box_set_property (GObject       *object,
 651                                 guint          prop_id,
 652                                 const GValue  *value,
 653                                 GParamSpec    *pspec)
 654 {
 655   GtkCellAreaBox *box = GTK_CELL_AREA_BOX (object);
 656
 657   switch (prop_id)
 658     {
 659     case PROP_ORIENTATION:
 660       box->priv->orientation = g_value_get_enum (value);
 661
 662       /* Notify that size needs to be requested again */
 663       flush_iters (box);
 664       break;
 665     case PROP_SPACING:
 666       gtk_cell_area_box_set_spacing (box, g_value_get_int (value));
 667       break;
 668     default:
 669       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 670       break;
 671     }
 672 }
 673
 674 static void
 675 gtk_cell_area_box_get_property (GObject     *object,
 676                                 guint        prop_id,
 677                                 GValue      *value,
 678                                 GParamSpec  *pspec)
 679 {
 680   GtkCellAreaBox *box = GTK_CELL_AREA_BOX (object);
 681
 682   switch (prop_id)
 683     {
 684     case PROP_ORIENTATION:
 685       g_value_set_enum (value, box->priv->orientation);
 686       break;
 687     case PROP_SPACING:
 688       g_value_set_int (value, gtk_cell_area_box_get_spacing (box));
 689       break;
 690     default:
 691       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 692       break;
 693     }
 694 }
 695
 696 /*************************************************************
 697  *                    GtkCellAreaClass                       *
 698  *************************************************************/
 699 static void
 700 gtk_cell_area_box_add (GtkCellArea        *area,
 701                        GtkCellRenderer    *renderer)
 702 {
 703   gtk_cell_area_box_pack_start (GTK_CELL_AREA_BOX (area),
 704                                 renderer, FALSE, TRUE);
 705 }
 706
 707 static void
 708 gtk_cell_area_box_remove (GtkCellArea        *area,
 709                           GtkCellRenderer    *renderer)
 710 {
 711   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 712   GtkCellAreaBoxPrivate *priv = box->priv;
 713   GList                 *node;
 714
 715   node = g_list_find_custom (priv->cells, renderer,
 716                              (GCompareFunc)cell_info_find);
 717
 718   if (node)
 719     {
 720       CellInfo *info = node->data;
 721
 722       cell_info_free (info);
 723
 724       priv->cells = g_list_delete_link (priv->cells, node);
 725
 726       /* Reconstruct cell groups */
 727       g_list_foreach (priv->groups, (GFunc)cell_group_free, NULL);
 728       g_list_free (priv->groups);
 729       priv->groups = construct_cell_groups (box);
 730
 731       /* Reinitialize groups on iters */
 732       init_iter_groups (box);
 733     }
 734   else
 735     g_warning ("Trying to remove a cell renderer that is not present GtkCellAreaBox");
 736 }
 737
 738 static void
 739 gtk_cell_area_box_forall (GtkCellArea        *area,
 740                           GtkCellCallback     callback,
 741                           gpointer            callback_data)
 742 {
 743   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 744   GtkCellAreaBoxPrivate *priv = box->priv;
 745   GList                 *list;
 746
 747   for (list = priv->cells; list; list = list->next)
 748     {
 749       CellInfo *info = list->data;
 750
 751       callback (info->renderer, callback_data);
 752     }
 753 }
 754
 755 static gint
 756 gtk_cell_area_box_event (GtkCellArea          *area,
 757                          GtkCellAreaIter      *iter,
 758                          GtkWidget            *widget,
 759                          GdkEvent             *event,
 760                          const GdkRectangle   *cell_area,
 761                          GtkCellRendererState  flags)
 762 {
 763
 764
 765   return 0;
 766 }
 767
 768 static void
 769 gtk_cell_area_box_render (GtkCellArea          *area,
 770                           GtkCellAreaIter      *iter,
 771                           GtkWidget            *widget,
 772                           cairo_t              *cr,
 773                           const GdkRectangle   *cell_area,
 774                           GtkCellRendererState  flags)
 775 {
 776   GtkCellAreaBox        *box      = GTK_CELL_AREA_BOX (area);
 777   GtkCellAreaBoxPrivate *priv     = box->priv;
 778   GtkCellAreaBoxIter    *box_iter = GTK_CELL_AREA_BOX_ITER (iter);
 779   GSList                *allocated_cells, *l;
 780   GdkRectangle           background_area, inner_area;
 781
 782   background_area = *cell_area;
 783
 784   /* Get a list of cells with allocation sizes decided regardless
 785    * of alignments and pack order etc. */
 786   allocated_cells = get_allocated_cells (box, box_iter, widget);
 787
 788   for (l = allocated_cells; l; l = l->next)
 789     {
 790       AllocatedCell *cell = l->data;
 791
 792       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
 793         {
 794           background_area.x     = cell_area->x + cell->position;
 795           background_area.width = cell->size;
 796         }
 797       else
 798         {
 799           background_area.y      = cell_area->y + cell->position;
 800           background_area.height = cell->size;
 801         }
 802
 803       /* Remove margins from the background area to produce the cell area
 804        */
 805       gtk_cell_area_inner_cell_area (area, &background_area, &inner_area);
 806
 807       /* XXX We have to do some per-cell considerations for the 'flags'
 808        * for focus handling */
 809       gtk_cell_renderer_render (cell->renderer, cr, widget,
 810                                 &background_area, &inner_area,
 811                                 flags);
 812
 813     }
 814
 815   g_slist_foreach (allocated_cells, (GFunc)allocated_cell_free, NULL);
 816   g_slist_free (allocated_cells);
 817 }
 818
 819 static void
 820 gtk_cell_area_box_set_cell_property (GtkCellArea        *area,
 821                                      GtkCellRenderer    *renderer,
 822                                      guint               prop_id,
 823                                      const GValue       *value,
 824                                      GParamSpec         *pspec)
 825 {
 826   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 827   GtkCellAreaBoxPrivate *priv = box->priv;
 828   GList                 *node;
 829   CellInfo              *info;
 830   gboolean               rebuild = FALSE;
 831   gboolean               flush = FALSE;
 832   gboolean               val;
 833   GtkPackType            pack_type;
 834
 835   node = g_list_find_custom (priv->cells, renderer,
 836                              (GCompareFunc)cell_info_find);
 837   if (!node)
 838     return;
 839
 840   info = node->data;
 841
 842   switch (prop_id)
 843     {
 844     case CELL_PROP_EXPAND:
 845       val = g_value_get_boolean (value);
 846
 847       if (info->expand != val)
 848         {
 849           info->expand = val;
 850           flush        = TRUE;
 851         }
 852       break;
 853
 854     case CELL_PROP_ALIGN:
 855       val = g_value_get_boolean (value);
 856
 857       if (info->align != val)
 858         {
 859           info->align = val;
 860           flush       = TRUE;
 861         }
 862       break;
 863
 864     case CELL_PROP_PACK_TYPE:
 865       pack_type = g_value_get_enum (value);
 866
 867       if (info->pack != pack_type)
 868         {
 869           info->pack = pack_type;
 870           rebuild    = TRUE;
 871         }
 872       break;
 873     default:
 874       GTK_CELL_AREA_WARN_INVALID_CHILD_PROPERTY_ID (area, prop_id, pspec);
 875       break;
 876     }
 877
 878   /* Groups need to be rebuilt */
 879   if (rebuild)
 880     {
 881       /* Reconstruct cell groups */
 882       g_list_foreach (priv->groups, (GFunc)cell_group_free, NULL);
 883       g_list_free (priv->groups);
 884       priv->groups = construct_cell_groups (box);
 885
 886       /* Reinitialize groups on iters */
 887       init_iter_groups (box);
 888     }
 889   else if (flush)
 890     {
 891       flush_iters (box);
 892     }
 893 }
 894
 895 static void
 896 gtk_cell_area_box_get_cell_property (GtkCellArea        *area,
 897                                      GtkCellRenderer    *renderer,
 898                                      guint               prop_id,
 899                                      GValue             *value,
 900                                      GParamSpec         *pspec)
 901 {
 902   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 903   GtkCellAreaBoxPrivate *priv = box->priv;
 904   GList                 *node;
 905   CellInfo              *info;
 906
 907   node = g_list_find_custom (priv->cells, renderer,
 908                              (GCompareFunc)cell_info_find);
 909   if (!node)
 910     return;
 911
 912   info = node->data;
 913
 914   switch (prop_id)
 915     {
 916     case CELL_PROP_EXPAND:
 917       g_value_set_boolean (value, info->expand);
 918       break;
 919
 920     case CELL_PROP_ALIGN:
 921       g_value_set_boolean (value, info->align);
 922       break;
 923
 924     case CELL_PROP_PACK_TYPE:
 925       g_value_set_enum (value, info->pack);
 926       break;
 927     default:
 928       GTK_CELL_AREA_WARN_INVALID_CHILD_PROPERTY_ID (area, prop_id, pspec);
 929       break;
 930     }
 931 }
 932
 933
 934 static GtkCellAreaIter *
 935 gtk_cell_area_box_create_iter (GtkCellArea *area)
 936 {
 937   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 938   GtkCellAreaBoxPrivate *priv = box->priv;
 939   GtkCellAreaIter       *iter =
 940     (GtkCellAreaIter *)g_object_new (GTK_TYPE_CELL_AREA_BOX_ITER, NULL);
 941
 942   priv->iters = g_slist_prepend (priv->iters, iter);
 943
 944   g_object_weak_ref (G_OBJECT (iter), (GWeakNotify)iter_weak_notify, box);
 945
 946   /* Tell the new group about our cell layout */
 947   init_iter_group (box, GTK_CELL_AREA_BOX_ITER (iter));
 948
 949   return iter;
 950 }
 951
 952 static GtkSizeRequestMode
 953 gtk_cell_area_box_get_request_mode (GtkCellArea *area)
 954 {
 955   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 956   GtkCellAreaBoxPrivate *priv = box->priv;
 957
 958   return (priv->orientation) == GTK_ORIENTATION_HORIZONTAL ?
 959     GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH :
 960     GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT;
 961 }
 962
 963 static void
 964 compute_size (GtkCellAreaBox     *box,
 965               GtkOrientation      orientation,
 966               GtkCellAreaBoxIter *iter,
 967               GtkWidget          *widget,
 968               gint                for_size,
 969               gint               *minimum_size,
 970               gint               *natural_size)
 971 {
 972   GtkCellAreaBoxPrivate *priv = box->priv;
 973   GtkCellArea           *area = GTK_CELL_AREA (box);
 974   CellGroup             *group;
 975   CellInfo              *info;
 976   GList                 *cell_list, *group_list;
 977   gint                   min_size = 0;
 978   gint                   nat_size = 0;
 979
 980   for (group_list = priv->groups; group_list; group_list = group_list->next)
 981     {
 982       gint group_min_size = 0;
 983       gint group_nat_size = 0;
 984
 985       group = group_list->data;
 986
 987       for (cell_list = group->cells; cell_list; cell_list = cell_list->next)
 988         {
 989           gint renderer_min_size, renderer_nat_size;
 990
 991           info = cell_list->data;
 992
 993           gtk_cell_area_request_renderer (area, info->renderer, orientation, widget, for_size,
 994                                           &renderer_min_size, &renderer_nat_size);
 995
 996           if (orientation == priv->orientation)
 997             {
 998               if (min_size > 0)
 999                 {
1000                   min_size += priv->spacing;
1001                   nat_size += priv->spacing;
1002                 }
1003
1004               if (group_min_size > 0)
1005                 {
1006                   group_min_size += priv->spacing;
1007                   group_nat_size += priv->spacing;
1008                 }
1009
1010               min_size       += renderer_min_size;
1011               nat_size       += renderer_nat_size;
1012               group_min_size += renderer_min_size;
1013               group_nat_size += renderer_nat_size;
1014             }
1015           else
1016             {
1017               min_size       = MAX (min_size, renderer_min_size);
1018               nat_size       = MAX (nat_size, renderer_nat_size);
1019               group_min_size = MAX (group_min_size, renderer_min_size);
1020               group_nat_size = MAX (group_nat_size, renderer_nat_size);
1021             }
1022         }
1023
1024       if (orientation == GTK_ORIENTATION_HORIZONTAL)
1025         {
1026           if (for_size < 0)
1027             gtk_cell_area_box_iter_push_group_width (iter, group->id, group_min_size, group_nat_size);
1028           else
1029             gtk_cell_area_box_iter_push_group_width_for_height (iter, group->id, for_size,
1030                                                                 group_min_size, group_nat_size);
1031         }
1032       else
1033         {
1034           if (for_size < 0)
1035             gtk_cell_area_box_iter_push_group_height (iter, group->id, group_min_size, group_nat_size);
1036           else
1037             gtk_cell_area_box_iter_push_group_height_for_width (iter, group->id, for_size,
1038                                                                 group_min_size, group_nat_size);
1039         }
1040     }
1041
1042   *minimum_size = min_size;
1043   *natural_size = nat_size;
1044 }
1045
1046 GtkRequestedSize *
1047 get_group_sizes (GtkCellArea    *area,
1048                  CellGroup      *group,
1049                  GtkOrientation  orientation,
1050                  GtkWidget      *widget,
1051                  gint           *n_sizes)
1052 {
1053   GtkRequestedSize *sizes;
1054   GList            *l;
1055   gint              i;
1056
1057   *n_sizes = g_list_length (group->cells);
1058   sizes    = g_new (GtkRequestedSize, *n_sizes);
1059
1060   for (l = group->cells, i = 0; l; l = l->next, i++)
1061     {
1062       CellInfo *info = l->data;
1063
1064       sizes[i].data = info;
1065
1066       gtk_cell_area_request_renderer (area, info->renderer,
1067                                       orientation, widget, -1,
1068                                       &sizes[i].minimum_size,
1069                                       &sizes[i].natural_size);
1070     }
1071
1072   return sizes;
1073 }
1074
1075 static void
1076 compute_group_size_for_opposing_orientation (GtkCellAreaBox     *box,
1077                                              CellGroup          *group,
1078                                              GtkWidget          *widget,
1079                                              gint                for_size,
1080                                              gint               *minimum_size,
1081                                              gint               *natural_size)
1082 {
1083   GtkCellAreaBoxPrivate *priv = box->priv;
1084   GtkCellArea           *area = GTK_CELL_AREA (box);
1085
1086   /* Exception for single cell groups */
1087   if (group->n_cells == 1)
1088     {
1089       CellInfo *info = group->cells->data;
1090
1091       gtk_cell_area_request_renderer (area, info->renderer,
1092                                       OPPOSITE_ORIENTATION (priv->orientation),
1093                                       widget, for_size, minimum_size, natural_size);
1094     }
1095   else
1096     {
1097       GtkRequestedSize *orientation_sizes;
1098       CellInfo         *info;
1099       gint              n_sizes, i;
1100       gint              avail_size     = for_size;
1101       gint              extra_size, extra_extra;
1102       gint              min_size = 0, nat_size = 0;
1103
1104       orientation_sizes = get_group_sizes (area, group, priv->orientation, widget, &n_sizes);
1105
1106       /* First naturally allocate the cells in the group into the for_size */
1107       avail_size -= (n_sizes - 1) * priv->spacing;
1108       for (i = 0; i < n_sizes; i++)
1109         avail_size -= orientation_sizes[i].minimum_size;
1110
1111       avail_size = gtk_distribute_natural_allocation (avail_size, n_sizes, orientation_sizes);
1112
1113       /* Calculate/distribute expand for cells */
1114       if (group->expand_cells > 0)
1115         {
1116           extra_size  = avail_size / group->expand_cells;
1117           extra_extra = avail_size % group->expand_cells;
1118         }
1119       else
1120         extra_size = extra_extra = 0;
1121
1122       for (i = 0; i < n_sizes; i++)
1123         {
1124           gint cell_min, cell_nat;
1125
1126           info = orientation_sizes[i].data;
1127
1128           if (info->expand)
1129             {
1130               orientation_sizes[i].minimum_size += extra_size;
1131               if (extra_extra)
1132                 {
1133                   orientation_sizes[i].minimum_size++;
1134                   extra_extra--;
1135                 }
1136             }
1137
1138           gtk_cell_area_request_renderer (area, info->renderer,
1139                                           OPPOSITE_ORIENTATION (priv->orientation),
1140                                           widget,
1141                                           orientation_sizes[i].minimum_size,
1142                                           &cell_min, &cell_nat);
1143
1144           min_size = MAX (min_size, cell_min);
1145           nat_size = MAX (nat_size, cell_nat);
1146         }
1147
1148       *minimum_size = min_size;
1149       *natural_size = nat_size;
1150
1151       g_free (orientation_sizes);
1152     }
1153 }
1154
1155 static void
1156 compute_size_for_opposing_orientation (GtkCellAreaBox     *box,
1157                                        GtkCellAreaBoxIter *iter,
1158                                        GtkWidget          *widget,
1159                                        gint                for_size,
1160                                        gint               *minimum_size,
1161                                        gint               *natural_size)
1162 {
1163   GtkCellAreaBoxPrivate *priv = box->priv;
1164   CellGroup             *group;
1165   GList                 *group_list;
1166   GtkRequestedSize      *orientation_sizes;
1167   gint                   n_groups, n_expand_groups, i;
1168   gint                   avail_size = for_size;
1169   gint                   extra_size, extra_extra;
1170   gint                   min_size = 0, nat_size = 0;
1171
1172   n_expand_groups = count_expand_groups (box);
1173
1174   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1175     orientation_sizes = gtk_cell_area_box_iter_get_widths (iter, &n_groups);
1176   else
1177     orientation_sizes = gtk_cell_area_box_iter_get_heights (iter, &n_groups);
1178
1179   /* First start by naturally allocating space among groups of cells */
1180   avail_size -= (n_groups - 1) * priv->spacing;
1181   for (i = 0; i < n_groups; i++)
1182     avail_size -= orientation_sizes[i].minimum_size;
1183
1184   avail_size = gtk_distribute_natural_allocation (avail_size, n_groups, orientation_sizes);
1185
1186   /* Calculate/distribute expand for groups */
1187   if (n_expand_groups > 0)
1188     {
1189       extra_size  = avail_size / n_expand_groups;
1190       extra_extra = avail_size % n_expand_groups;
1191     }
1192   else
1193     extra_size = extra_extra = 0;
1194
1195   /* Now we need to naturally allocate sizes for cells in each group
1196    * and push the height-for-width for each group accordingly while accumulating
1197    * the overall height-for-width for this row.
1198    */
1199   for (group_list = priv->groups; group_list; group_list = group_list->next)
1200     {
1201       gint group_min, group_nat;
1202
1203       group = group_list->data;
1204
1205       if (group->expand_cells > 0)
1206         {
1207           orientation_sizes[group->id].minimum_size += extra_size;
1208           if (extra_extra)
1209             {
1210               orientation_sizes[group->id].minimum_size++;
1211               extra_extra--;
1212             }
1213         }
1214
1215       /* Now we have the allocation for the group, request it's height-for-width */
1216       compute_group_size_for_opposing_orientation (box, group, widget,
1217                                                    orientation_sizes[group->id].minimum_size,
1218                                                    &group_min, &group_nat);
1219
1220       min_size = MAX (min_size, group_min);
1221       nat_size = MAX (nat_size, group_nat);
1222
1223       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1224         {
1225           gtk_cell_area_box_iter_push_group_height_for_width (iter, group->id, for_size,
1226                                                               group_min, group_nat);
1227         }
1228       else
1229         {
1230           gtk_cell_area_box_iter_push_group_width_for_height (iter, group->id, for_size,
1231                                                               group_min, group_nat);
1232         }
1233     }
1234
1235   *minimum_size = min_size;
1236   *natural_size = nat_size;
1237
1238   g_free (orientation_sizes);
1239 }
1240
1241
1242
1243 static void
1244 gtk_cell_area_box_get_preferred_width (GtkCellArea        *area,
1245                                        GtkCellAreaIter    *iter,
1246                                        GtkWidget          *widget,
1247                                        gint               *minimum_width,
1248                                        gint               *natural_width)
1249 {
1250   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1251   GtkCellAreaBoxIter    *box_iter;
1252   gint                   min_width, nat_width;
1253
1254   g_return_if_fail (GTK_IS_CELL_AREA_BOX_ITER (iter));
1255
1256   box_iter = GTK_CELL_AREA_BOX_ITER (iter);
1257
1258   /* Compute the size of all renderers for current row data,
1259    * bumping cell alignments in the iter along the way */
1260   compute_size (box, GTK_ORIENTATION_HORIZONTAL,
1261                 box_iter, widget, -1, &min_width, &nat_width);
1262
1263   if (minimum_width)
1264     *minimum_width = min_width;
1265
1266   if (natural_width)
1267     *natural_width = nat_width;
1268 }
1269
1270 static void
1271 gtk_cell_area_box_get_preferred_height (GtkCellArea        *area,
1272                                         GtkCellAreaIter    *iter,
1273                                         GtkWidget          *widget,
1274                                         gint               *minimum_height,
1275                                         gint               *natural_height)
1276 {
1277   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1278   GtkCellAreaBoxIter    *box_iter;
1279   gint                   min_height, nat_height;
1280
1281   g_return_if_fail (GTK_IS_CELL_AREA_BOX_ITER (iter));
1282
1283   box_iter = GTK_CELL_AREA_BOX_ITER (iter);
1284
1285   /* Compute the size of all renderers for current row data,
1286    * bumping cell alignments in the iter along the way */
1287   compute_size (box, GTK_ORIENTATION_VERTICAL,
1288                 box_iter, widget, -1, &min_height, &nat_height);
1289
1290   if (minimum_height)
1291     *minimum_height = min_height;
1292
1293   if (natural_height)
1294     *natural_height = nat_height;
1295 }
1296
1297 static void
1298 gtk_cell_area_box_get_preferred_height_for_width (GtkCellArea        *area,
1299                                                   GtkCellAreaIter    *iter,
1300                                                   GtkWidget          *widget,
1301                                                   gint                width,
1302                                                   gint               *minimum_height,
1303                                                   gint               *natural_height)
1304 {
1305   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1306   GtkCellAreaBoxIter    *box_iter;
1307   GtkCellAreaBoxPrivate *priv;
1308   gint                   min_height, nat_height;
1309
1310   g_return_if_fail (GTK_IS_CELL_AREA_BOX_ITER (iter));
1311
1312   box_iter = GTK_CELL_AREA_BOX_ITER (iter);
1313   priv     = box->priv;
1314
1315   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
1316     {
1317       /* Add up vertical requests of height for width and push the overall
1318        * cached sizes for alignments */
1319       compute_size (box, priv->orientation, box_iter, widget, width, &min_height, &nat_height);
1320     }
1321   else
1322     {
1323       /* Juice: virtually allocate cells into the for_width using the
1324        * alignments and then return the overall height for that width, and cache it */
1325       compute_size_for_opposing_orientation (box, box_iter, widget, width, &min_height, &nat_height);
1326     }
1327
1328   if (minimum_height)
1329     *minimum_height = min_height;
1330
1331   if (natural_height)
1332     *natural_height = nat_height;
1333 }
1334
1335 static void
1336 gtk_cell_area_box_get_preferred_width_for_height (GtkCellArea        *area,
1337                                                   GtkCellAreaIter    *iter,
1338                                                   GtkWidget          *widget,
1339                                                   gint                height,
1340                                                   gint               *minimum_width,
1341                                                   gint               *natural_width)
1342 {
1343   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1344   GtkCellAreaBoxIter    *box_iter;
1345   GtkCellAreaBoxPrivate *priv;
1346   gint                   min_width, nat_width;
1347
1348   g_return_if_fail (GTK_IS_CELL_AREA_BOX_ITER (iter));
1349
1350   box_iter = GTK_CELL_AREA_BOX_ITER (iter);
1351   priv     = box->priv;
1352
1353   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1354     {
1355       /* Add up horizontal requests of width for height and push the overall
1356        * cached sizes for alignments */
1357       compute_size (box, priv->orientation, box_iter, widget, height, &min_width, &nat_width);
1358     }
1359   else
1360     {
1361       /* Juice: horizontally allocate cells into the for_height using the
1362        * alignments and then return the overall width for that height, and cache it */
1363       compute_size_for_opposing_orientation (box, box_iter, widget, height, &min_width, &nat_width);
1364     }
1365
1366   if (minimum_width)
1367     *minimum_width = min_width;
1368
1369   if (natural_width)
1370     *natural_width = nat_width;
1371 }
1372
1373
1374 /*************************************************************
1375  *                    GtkCellLayoutIface                     *
1376  *************************************************************/
1377 static void
1378 gtk_cell_area_box_cell_layout_init (GtkCellLayoutIface *iface)
1379 {
1380   iface->pack_start = gtk_cell_area_box_layout_pack_start;
1381   iface->pack_end   = gtk_cell_area_box_layout_pack_end;
1382   iface->reorder    = gtk_cell_area_box_layout_reorder;
1383 }
1384
1385 static void
1386 gtk_cell_area_box_layout_pack_start (GtkCellLayout      *cell_layout,
1387                                      GtkCellRenderer    *renderer,
1388                                      gboolean            expand)
1389 {
1390   gtk_cell_area_box_pack_start (GTK_CELL_AREA_BOX (cell_layout), renderer, expand, TRUE);
1391 }
1392
1393 static void
1394 gtk_cell_area_box_layout_pack_end (GtkCellLayout      *cell_layout,
1395                                    GtkCellRenderer    *renderer,
1396                                    gboolean            expand)
1397 {
1398   gtk_cell_area_box_pack_end (GTK_CELL_AREA_BOX (cell_layout), renderer, expand, TRUE);
1399 }
1400
1401 static void
1402 gtk_cell_area_box_layout_reorder (GtkCellLayout      *cell_layout,
1403                                   GtkCellRenderer    *renderer,
1404                                   gint                position)
1405 {
1406   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (cell_layout);
1407   GtkCellAreaBoxPrivate *priv = box->priv;
1408   GList                 *node;
1409   CellInfo              *info;
1410
1411   node = g_list_find_custom (priv->cells, renderer,
1412                              (GCompareFunc)cell_info_find);
1413
1414   if (node)
1415     {
1416       info = node->data;
1417
1418       priv->cells = g_list_delete_link (priv->cells, node);
1419       priv->cells = g_list_insert (priv->cells, info, position);
1420
1421       /* Reconstruct cell groups */
1422       g_list_foreach (priv->groups, (GFunc)cell_group_free, NULL);
1423       g_list_free (priv->groups);
1424       priv->groups = construct_cell_groups (box);
1425
1426       /* Reinitialize groups on iters */
1427       init_iter_groups (box);
1428     }
1429 }
1430
1431 /*************************************************************
1432  *                            API                            *
1433  *************************************************************/
1434 GtkCellArea *
1435 gtk_cell_area_box_new (void)
1436 {
1437   return (GtkCellArea *)g_object_new (GTK_TYPE_CELL_AREA_BOX, NULL);
1438 }
1439
1440 void
1441 gtk_cell_area_box_pack_start  (GtkCellAreaBox  *box,
1442                                GtkCellRenderer *renderer,
1443                                gboolean         expand,
1444                                gboolean         align)
1445 {
1446   GtkCellAreaBoxPrivate *priv;
1447   CellInfo              *info;
1448
1449   g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
1450   g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
1451
1452   priv = box->priv;
1453
1454   if (g_list_find_custom (priv->cells, renderer,
1455                           (GCompareFunc)cell_info_find))
1456     {
1457       g_warning ("Refusing to add the same cell renderer to a GtkCellAreaBox twice");
1458       return;
1459     }
1460
1461   info = cell_info_new (renderer, GTK_PACK_START, expand, align);
1462
1463   priv->cells = g_list_append (priv->cells, info);
1464
1465   /* Reconstruct cell groups */
1466   g_list_foreach (priv->groups, (GFunc)cell_group_free, NULL);
1467   g_list_free (priv->groups);
1468   priv->groups = construct_cell_groups (box);
1469
1470   /* Reinitialize groups on iters */
1471   init_iter_groups (box);
1472 }
1473
1474 void
1475 gtk_cell_area_box_pack_end (GtkCellAreaBox  *box,
1476                             GtkCellRenderer *renderer,
1477                             gboolean         expand,
1478                             gboolean         align)
1479 {
1480   GtkCellAreaBoxPrivate *priv;
1481   CellInfo              *info;
1482
1483   g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
1484   g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
1485
1486   priv = box->priv;
1487
1488   if (g_list_find_custom (priv->cells, renderer,
1489                           (GCompareFunc)cell_info_find))
1490     {
1491       g_warning ("Refusing to add the same cell renderer to a GtkCellArea twice");
1492       return;
1493     }
1494
1495   info = cell_info_new (renderer, GTK_PACK_END, expand, align);
1496
1497   priv->cells = g_list_append (priv->cells, info);
1498
1499   /* Reconstruct cell groups */
1500   g_list_foreach (priv->groups, (GFunc)cell_group_free, NULL);
1501   g_list_free (priv->groups);
1502   priv->groups = construct_cell_groups (box);
1503
1504   /* Reinitialize groups on iters */
1505   init_iter_groups (box);
1506 }
1507
1508 gint
1509 gtk_cell_area_box_get_spacing (GtkCellAreaBox  *box)
1510 {
1511   g_return_val_if_fail (GTK_IS_CELL_AREA_BOX (box), 0);
1512
1513   return box->priv->spacing;
1514 }
1515
1516 void
1517 gtk_cell_area_box_set_spacing (GtkCellAreaBox  *box,
1518                                gint             spacing)
1519 {
1520   GtkCellAreaBoxPrivate *priv;
1521
1522   g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
1523
1524   priv = box->priv;
1525
1526   if (priv->spacing != spacing)
1527     {
1528       priv->spacing = spacing;
1529
1530       g_object_notify (G_OBJECT (box), "spacing");
1531
1532       /* Notify that size needs to be requested again */
1533       flush_iters (box);
1534     }
1535 }