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 "gtkcellareaboxcontext.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 void      gtk_cell_area_box_get_cell_allocation            (GtkCellArea          *area,
  54                                                                    GtkCellAreaContext   *context,
  55                                                                    GtkWidget            *widget,
  56                                                                    GtkCellRenderer      *renderer,
  57                                                                    const GdkRectangle   *cell_area,
  58                                                                    GdkRectangle         *allocation);
  59 static gint      gtk_cell_area_box_event                          (GtkCellArea          *area,
  60                                                                    GtkCellAreaContext   *context,
  61                                                                    GtkWidget            *widget,
  62                                                                    GdkEvent             *event,
  63                                                                    const GdkRectangle   *cell_area,
  64                                                                    GtkCellRendererState  flags);
  65 static void      gtk_cell_area_box_render                         (GtkCellArea          *area,
  66                                                                    GtkCellAreaContext   *context,
  67                                                                    GtkWidget            *widget,
  68                                                                    cairo_t              *cr,
  69                                                                    const GdkRectangle   *background_area,
  70                                                                    const GdkRectangle   *cell_area,
  71                                                                    GtkCellRendererState  flags,
  72                                                                    gboolean              paint_focus);
  73 static void      gtk_cell_area_box_set_cell_property              (GtkCellArea          *area,
  74                                                                    GtkCellRenderer      *renderer,
  75                                                                    guint                 prop_id,
  76                                                                    const GValue         *value,
  77                                                                    GParamSpec           *pspec);
  78 static void      gtk_cell_area_box_get_cell_property              (GtkCellArea          *area,
  79                                                                    GtkCellRenderer      *renderer,
  80                                                                    guint                 prop_id,
  81                                                                    GValue               *value,
  82                                                                    GParamSpec           *pspec);
  83 static GtkCellAreaContext *gtk_cell_area_box_create_context       (GtkCellArea          *area);
  84 static GtkSizeRequestMode  gtk_cell_area_box_get_request_mode     (GtkCellArea          *area);
  85 static void      gtk_cell_area_box_get_preferred_width            (GtkCellArea          *area,
  86                                                                    GtkCellAreaContext   *context,
  87                                                                    GtkWidget            *widget,
  88                                                                    gint                 *minimum_width,
  89                                                                    gint                 *natural_width);
  90 static void      gtk_cell_area_box_get_preferred_height           (GtkCellArea          *area,
  91                                                                    GtkCellAreaContext   *context,
  92                                                                    GtkWidget            *widget,
  93                                                                    gint                 *minimum_height,
  94                                                                    gint                 *natural_height);
  95 static void      gtk_cell_area_box_get_preferred_height_for_width (GtkCellArea          *area,
  96                                                                    GtkCellAreaContext   *context,
  97                                                                    GtkWidget            *widget,
  98                                                                    gint                  width,
  99                                                                    gint                 *minimum_height,
 100                                                                    gint                 *natural_height);
 101 static void      gtk_cell_area_box_get_preferred_width_for_height (GtkCellArea          *area,
 102                                                                    GtkCellAreaContext   *context,
 103                                                                    GtkWidget            *widget,
 104                                                                    gint                  height,
 105                                                                    gint                 *minimum_width,
 106                                                                    gint                 *natural_width);
 107 static gboolean  gtk_cell_area_box_focus                          (GtkCellArea          *area,
 108                                                                    GtkDirectionType      direction);
 109
 110 /* GtkCellLayoutIface */
 111 static void      gtk_cell_area_box_cell_layout_init               (GtkCellLayoutIface *iface);
 112 static void      gtk_cell_area_box_layout_pack_start              (GtkCellLayout      *cell_layout,
 113                                                                    GtkCellRenderer    *renderer,
 114                                                                    gboolean            expand);
 115 static void      gtk_cell_area_box_layout_pack_end                (GtkCellLayout      *cell_layout,
 116                                                                    GtkCellRenderer    *renderer,
 117                                                                    gboolean            expand);
 118 static void      gtk_cell_area_box_layout_reorder                 (GtkCellLayout      *cell_layout,
 119                                                                    GtkCellRenderer    *renderer,
 120                                                                    gint                position);
 121
 122
 123 /* CellInfo/CellGroup metadata handling and convenience functions */
 124 typedef struct {
 125   GtkCellRenderer *renderer;
 126
 127   guint            expand : 1; /* Whether the cell expands */
 128   guint            pack   : 1; /* Whether the cell is packed from the start or end */
 129   guint            align  : 1; /* Whether to align this cell's position with adjacent rows */
 130 } CellInfo;
 131
 132 typedef struct {
 133   GList *cells;
 134
 135   guint  id           : 8;
 136   guint  n_cells      : 8;
 137   guint  expand_cells : 8;
 138 } CellGroup;
 139
 140 typedef struct {
 141   GtkCellRenderer *renderer;
 142
 143   gint             position;
 144   gint             size;
 145 } AllocatedCell;
 146
 147 static CellInfo      *cell_info_new          (GtkCellRenderer       *renderer,
 148                                               GtkPackType            pack,
 149                                               gboolean               expand,
 150                                               gboolean               align);
 151 static void           cell_info_free         (CellInfo              *info);
 152 static gint           cell_info_find         (CellInfo              *info,
 153                                               GtkCellRenderer       *renderer);
 154
 155 static AllocatedCell *allocated_cell_new     (GtkCellRenderer       *renderer,
 156                                               gint                   position,
 157                                               gint                   size);
 158 static void           allocated_cell_free    (AllocatedCell         *cell);
 159 static GList         *list_consecutive_cells (GtkCellAreaBox        *box);
 160 static gint           count_expand_groups    (GtkCellAreaBox        *box);
 161 static void           context_weak_notify    (GtkCellAreaBox        *box,
 162                                               GtkCellAreaBoxContext *dead_context);
 163 static void           flush_contexts         (GtkCellAreaBox        *box);
 164 static void           init_context_groups    (GtkCellAreaBox        *box);
 165 static void           init_context_group     (GtkCellAreaBox        *box,
 166                                               GtkCellAreaBoxContext *context);
 167 static GSList        *get_allocated_cells    (GtkCellAreaBox        *box,
 168                                               GtkCellAreaBoxContext *context,
 169                                               GtkWidget             *widget,
 170                                               gint                   orientation_size);
 171
 172
 173 struct _GtkCellAreaBoxPrivate
 174 {
 175   GtkOrientation  orientation;
 176
 177   GList          *cells;
 178   GArray         *groups;
 179
 180   GSList         *contexts;
 181
 182   gint            spacing;
 183 };
 184
 185 enum {
 186   PROP_0,
 187   PROP_ORIENTATION,
 188   PROP_SPACING
 189 };
 190
 191 enum {
 192   CELL_PROP_0,
 193   CELL_PROP_EXPAND,
 194   CELL_PROP_ALIGN,
 195   CELL_PROP_PACK_TYPE
 196 };
 197
 198 G_DEFINE_TYPE_WITH_CODE (GtkCellAreaBox, gtk_cell_area_box, GTK_TYPE_CELL_AREA,
 199                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 200                                                 gtk_cell_area_box_cell_layout_init)
 201                          G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL));
 202
 203 #define OPPOSITE_ORIENTATION(orientation)                       \
 204   ((orientation) == GTK_ORIENTATION_HORIZONTAL ?                \
 205    GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL)
 206
 207 static void
 208 gtk_cell_area_box_init (GtkCellAreaBox *box)
 209 {
 210   GtkCellAreaBoxPrivate *priv;
 211
 212   box->priv = G_TYPE_INSTANCE_GET_PRIVATE (box,
 213                                            GTK_TYPE_CELL_AREA_BOX,
 214                                            GtkCellAreaBoxPrivate);
 215   priv = box->priv;
 216
 217   priv->orientation = GTK_ORIENTATION_HORIZONTAL;
 218   priv->groups      = g_array_new (FALSE, TRUE, sizeof (CellGroup));
 219   priv->cells       = NULL;
 220   priv->contexts    = NULL;
 221   priv->spacing     = 0;
 222 }
 223
 224 static void
 225 gtk_cell_area_box_class_init (GtkCellAreaBoxClass *class)
 226 {
 227   GObjectClass     *object_class = G_OBJECT_CLASS (class);
 228   GtkCellAreaClass *area_class   = GTK_CELL_AREA_CLASS (class);
 229
 230   /* GObjectClass */
 231   object_class->finalize     = gtk_cell_area_box_finalize;
 232   object_class->dispose      = gtk_cell_area_box_dispose;
 233   object_class->set_property = gtk_cell_area_box_set_property;
 234   object_class->get_property = gtk_cell_area_box_get_property;
 235
 236   /* GtkCellAreaClass */
 237   area_class->add                 = gtk_cell_area_box_add;
 238   area_class->remove              = gtk_cell_area_box_remove;
 239   area_class->forall              = gtk_cell_area_box_forall;
 240   area_class->get_cell_allocation = gtk_cell_area_box_get_cell_allocation;
 241   area_class->event               = gtk_cell_area_box_event;
 242   area_class->render              = gtk_cell_area_box_render;
 243   area_class->set_cell_property   = gtk_cell_area_box_set_cell_property;
 244   area_class->get_cell_property   = gtk_cell_area_box_get_cell_property;
 245
 246   area_class->create_context                 = gtk_cell_area_box_create_context;
 247   area_class->get_request_mode               = gtk_cell_area_box_get_request_mode;
 248   area_class->get_preferred_width            = gtk_cell_area_box_get_preferred_width;
 249   area_class->get_preferred_height           = gtk_cell_area_box_get_preferred_height;
 250   area_class->get_preferred_height_for_width = gtk_cell_area_box_get_preferred_height_for_width;
 251   area_class->get_preferred_width_for_height = gtk_cell_area_box_get_preferred_width_for_height;
 252
 253   area_class->focus = gtk_cell_area_box_focus;
 254
 255   /* Properties */
 256   g_object_class_override_property (object_class, PROP_ORIENTATION, "orientation");
 257
 258   g_object_class_install_property (object_class,
 259                                    PROP_SPACING,
 260                                    g_param_spec_int ("spacing",
 261                                                      P_("Spacing"),
 262                                                      P_("Space which is inserted between cells"),
 263                                                      0,
 264                                                      G_MAXINT,
 265                                                      0,
 266                                                      GTK_PARAM_READWRITE));
 267
 268   /* Cell Properties */
 269   gtk_cell_area_class_install_cell_property (area_class,
 270                                              CELL_PROP_EXPAND,
 271                                              g_param_spec_boolean
 272                                              ("expand",
 273                                               P_("Expand"),
 274                                               P_("Whether the cell expands"),
 275                                               FALSE,
 276                                               GTK_PARAM_READWRITE));
 277
 278   gtk_cell_area_class_install_cell_property (area_class,
 279                                              CELL_PROP_ALIGN,
 280                                              g_param_spec_boolean
 281                                              ("align",
 282                                               P_("Align"),
 283                                               P_("Whether cell should align with adjacent rows"),
 284                                               TRUE,
 285                                               GTK_PARAM_READWRITE));
 286
 287   gtk_cell_area_class_install_cell_property (area_class,
 288                                              CELL_PROP_PACK_TYPE,
 289                                              g_param_spec_enum
 290                                              ("pack-type",
 291                                               P_("Pack Type"),
 292                                               P_("A GtkPackType indicating whether the cell is packed with "
 293                                                  "reference to the start or end of the cell area"),
 294                                               GTK_TYPE_PACK_TYPE, GTK_PACK_START,
 295                                               GTK_PARAM_READWRITE));
 296
 297   g_type_class_add_private (object_class, sizeof (GtkCellAreaBoxPrivate));
 298 }
 299
 300
 301 /*************************************************************
 302  *    CellInfo/CellGroup basics and convenience functions    *
 303  *************************************************************/
 304 static CellInfo *
 305 cell_info_new  (GtkCellRenderer *renderer,
 306                 GtkPackType      pack,
 307                 gboolean         expand,
 308                 gboolean         align)
 309 {
 310   CellInfo *info = g_slice_new (CellInfo);
 311
 312   info->renderer = g_object_ref_sink (renderer);
 313   info->pack     = pack;
 314   info->expand   = expand;
 315   info->align    = align;
 316
 317   return info;
 318 }
 319
 320 static void
 321 cell_info_free (CellInfo *info)
 322 {
 323   g_object_unref (info->renderer);
 324
 325   g_slice_free (CellInfo, info);
 326 }
 327
 328 static gint
 329 cell_info_find (CellInfo        *info,
 330                 GtkCellRenderer *renderer)
 331 {
 332   return (info->renderer == renderer) ? 0 : -1;
 333 }
 334
 335 static AllocatedCell *
 336 allocated_cell_new (GtkCellRenderer *renderer,
 337                     gint             position,
 338                     gint             size)
 339 {
 340   AllocatedCell *cell = g_slice_new (AllocatedCell);
 341
 342   cell->renderer = renderer;
 343   cell->position = position;
 344   cell->size     = size;
 345
 346   return cell;
 347 }
 348
 349 static void
 350 allocated_cell_free (AllocatedCell *cell)
 351 {
 352   g_slice_free (AllocatedCell, cell);
 353 }
 354
 355 static GList *
 356 list_consecutive_cells (GtkCellAreaBox *box)
 357 {
 358   GtkCellAreaBoxPrivate *priv = box->priv;
 359   GList                 *l, *consecutive_cells = NULL, *pack_end_cells = NULL;
 360   CellInfo              *info;
 361
 362   /* List cells in consecutive order taking their
 363    * PACK_START/PACK_END options into account
 364    */
 365   for (l = priv->cells; l; l = l->next)
 366     {
 367       info = l->data;
 368
 369       if (info->pack == GTK_PACK_START)
 370         consecutive_cells = g_list_prepend (consecutive_cells, info);
 371     }
 372
 373   for (l = priv->cells; l; l = l->next)
 374     {
 375       info = l->data;
 376
 377       if (info->pack == GTK_PACK_END)
 378         pack_end_cells = g_list_prepend (pack_end_cells, info);
 379     }
 380
 381   consecutive_cells = g_list_reverse (consecutive_cells);
 382   consecutive_cells = g_list_concat (consecutive_cells, pack_end_cells);
 383
 384   return consecutive_cells;
 385 }
 386
 387 static void
 388 cell_groups_clear (GtkCellAreaBox     *box)
 389 {
 390   GtkCellAreaBoxPrivate *priv  = box->priv;
 391   gint                   i;
 392
 393   for (i = 0; i < priv->groups->len; i++)
 394     {
 395       CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
 396
 397       g_list_free (group->cells);
 398     }
 399
 400   g_array_set_size (priv->groups, 0);
 401 }
 402
 403 static void
 404 cell_groups_rebuild (GtkCellAreaBox *box)
 405 {
 406   GtkCellAreaBoxPrivate *priv  = box->priv;
 407   CellGroup              group = { 0, };
 408   CellGroup             *group_ptr;
 409   GList                 *cells, *l;
 410   guint                  id = 0;
 411
 412   cell_groups_clear (box);
 413
 414   if (!priv->cells)
 415     return;
 416
 417   cells = list_consecutive_cells (box);
 418
 419   /* First group is implied */
 420   g_array_append_val (priv->groups, group);
 421   group_ptr = &g_array_index (priv->groups, CellGroup, id);
 422
 423   for (l = cells; l; l = l->next)
 424     {
 425       CellInfo *info = l->data;
 426
 427       /* A new group starts with any aligned cell, the first group is implied */
 428       if (info->align && l != cells)
 429         {
 430           memset (&group, 0x0, sizeof (CellGroup));
 431           group.id = ++id;
 432
 433           g_array_append_val (priv->groups, group);
 434           group_ptr = &g_array_index (priv->groups, CellGroup, id);
 435         }
 436
 437       group_ptr->cells = g_list_prepend (group_ptr->cells, info);
 438       group_ptr->n_cells++;
 439
 440       /* A group expands if it contains any expand cells */
 441       if (info->expand)
 442         group_ptr->expand_cells++;
 443     }
 444
 445   g_list_free (cells);
 446
 447   for (id = 0; id < priv->groups->len; id++)
 448     {
 449       group_ptr = &g_array_index (priv->groups, CellGroup, id);
 450
 451       group_ptr->cells = g_list_reverse (group_ptr->cells);
 452     }
 453
 454   /* Contexts need to be updated with the new grouping information */
 455   init_context_groups (box);
 456 }
 457
 458 static gint
 459 count_visible_cells (CellGroup *group,
 460                      gint      *expand_cells)
 461 {
 462   GList *l;
 463   gint   visible_cells = 0;
 464   gint   n_expand_cells = 0;
 465
 466   for (l = group->cells; l; l = l->next)
 467     {
 468       CellInfo *info = l->data;
 469
 470       if (gtk_cell_renderer_get_visible (info->renderer))
 471         {
 472           visible_cells++;
 473
 474           if (info->expand)
 475             n_expand_cells++;
 476         }
 477     }
 478
 479   if (expand_cells)
 480     *expand_cells = n_expand_cells;
 481
 482   return visible_cells;
 483 }
 484
 485 static gint
 486 count_expand_groups (GtkCellAreaBox  *box)
 487 {
 488   GtkCellAreaBoxPrivate *priv = box->priv;
 489   gint                   i;
 490   gint                   expand_groups = 0;
 491
 492   for (i = 0; i < priv->groups->len; i++)
 493     {
 494       CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
 495
 496       if (group->expand_cells > 0)
 497         expand_groups++;
 498     }
 499
 500   return expand_groups;
 501 }
 502
 503 static void
 504 context_weak_notify (GtkCellAreaBox        *box,
 505                      GtkCellAreaBoxContext *dead_context)
 506 {
 507   GtkCellAreaBoxPrivate *priv = box->priv;
 508
 509   priv->contexts = g_slist_remove (priv->contexts, dead_context);
 510 }
 511
 512 static void
 513 init_context_group (GtkCellAreaBox        *box,
 514                     GtkCellAreaBoxContext *context)
 515 {
 516   GtkCellAreaBoxPrivate *priv = box->priv;
 517   gint                  *expand_groups, i;
 518
 519   expand_groups = g_new (gboolean, priv->groups->len);
 520
 521   for (i = 0; i < priv->groups->len; i++)
 522     {
 523       CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
 524
 525       expand_groups[i] = (group->expand_cells > 0);
 526     }
 527
 528   /* This call implies flushing the request info */
 529   gtk_cell_area_box_init_groups (context, priv->groups->len, expand_groups);
 530   g_free (expand_groups);
 531 }
 532
 533 static void
 534 init_context_groups (GtkCellAreaBox *box)
 535 {
 536   GtkCellAreaBoxPrivate *priv = box->priv;
 537   GSList                *l;
 538
 539   /* When the box's groups are reconstructed, contexts need to
 540    * be reinitialized.
 541    */
 542   for (l = priv->contexts; l; l = l->next)
 543     {
 544       GtkCellAreaBoxContext *context = l->data;
 545
 546       init_context_group (box, context);
 547     }
 548 }
 549
 550 static void
 551 flush_contexts (GtkCellAreaBox *box)
 552 {
 553   GtkCellAreaBoxPrivate *priv = box->priv;
 554   GSList                *l;
 555
 556   /* When the box layout changes, contexts need to
 557    * be flushed and sizes for the box get requested again
 558    */
 559   for (l = priv->contexts; l; l = l->next)
 560     {
 561       GtkCellAreaContext *context = l->data;
 562
 563       gtk_cell_area_context_flush (context);
 564     }
 565 }
 566
 567 /* Returns an allocation for each cell in the orientation of the box,
 568  * used in ->render()/->event() implementations to get a straight-forward
 569  * list of allocated cells to operate on.
 570  */
 571 static GSList *
 572 get_allocated_cells (GtkCellAreaBox        *box,
 573                      GtkCellAreaBoxContext *context,
 574                      GtkWidget             *widget,
 575                      gint                   orientation_size)
 576 {
 577   GtkCellAreaBoxAllocation *group_allocs;
 578   GtkCellArea              *area = GTK_CELL_AREA (box);
 579   GtkCellAreaBoxPrivate    *priv = box->priv;
 580   GList                    *cell_list;
 581   GSList                   *allocated_cells = NULL;
 582   gint                      i, j, n_allocs;
 583   gboolean                  free_allocs = FALSE;
 584
 585   group_allocs = gtk_cell_area_box_context_get_orientation_allocs (context, &n_allocs);
 586   if (!group_allocs)
 587     {
 588       group_allocs = gtk_cell_area_box_context_allocate (context, orientation_size, &n_allocs);
 589       free_allocs  = TRUE;
 590     }
 591
 592   for (i = 0; i < n_allocs; i++)
 593     {
 594       /* We dont always allocate all groups, sometimes the requested group has only invisible
 595        * cells for every row, hence the usage of group_allocs[i].group_idx here
 596        */
 597       CellGroup *group = &g_array_index (priv->groups, CellGroup, group_allocs[i].group_idx);
 598
 599       /* Exception for single cell groups */
 600       if (group->n_cells == 1)
 601         {
 602           CellInfo      *info = group->cells->data;
 603           AllocatedCell *cell =
 604             allocated_cell_new (info->renderer, group_allocs[i].position, group_allocs[i].size);
 605
 606           allocated_cells = g_slist_prepend (allocated_cells, cell);
 607         }
 608       else
 609         {
 610           GtkRequestedSize *sizes;
 611           gint              avail_size, position;
 612           gint              visible_cells, expand_cells;
 613           gint              extra_size, extra_extra;
 614
 615           visible_cells = count_visible_cells (group, &expand_cells);
 616
 617           /* If this row has no visible cells in this group, just
 618            * skip the allocation */
 619           if (visible_cells == 0)
 620             continue;
 621
 622           /* Offset the allocation to the group position and allocate into
 623            * the group's available size */
 624           position   = group_allocs[i].position;
 625           avail_size = group_allocs[i].size;
 626
 627           sizes = g_new (GtkRequestedSize, visible_cells);
 628
 629           for (j = 0, cell_list = group->cells; cell_list; cell_list = cell_list->next)
 630             {
 631               CellInfo *info = cell_list->data;
 632
 633               if (!gtk_cell_renderer_get_visible (info->renderer))
 634                 continue;
 635
 636               gtk_cell_area_request_renderer (area, info->renderer,
 637                                               priv->orientation,
 638                                               widget, -1,
 639                                               &sizes[j].minimum_size,
 640                                               &sizes[j].natural_size);
 641
 642               sizes[j].data = info;
 643               avail_size   -= sizes[j].minimum_size;
 644
 645               j++;
 646             }
 647
 648           /* Distribute cells naturally within the group */
 649           avail_size -= (visible_cells - 1) * priv->spacing;
 650           avail_size = gtk_distribute_natural_allocation (avail_size, visible_cells, sizes);
 651
 652           /* Calculate/distribute expand for cells */
 653           if (expand_cells > 0)
 654             {
 655               extra_size  = avail_size / expand_cells;
 656               extra_extra = avail_size % expand_cells;
 657             }
 658           else
 659             extra_size = extra_extra = 0;
 660
 661           /* Create the allocated cells (loop only over visible cells here) */
 662           for (j = 0; j < visible_cells; j++)
 663             {
 664               CellInfo      *info = sizes[j].data;
 665               AllocatedCell *cell;
 666
 667               if (info->expand)
 668                 {
 669                   sizes[j].minimum_size += extra_size;
 670                   if (extra_extra)
 671                     {
 672                       sizes[j].minimum_size++;
 673                       extra_extra--;
 674                     }
 675                 }
 676
 677               cell = allocated_cell_new (info->renderer, position, sizes[j].minimum_size);
 678
 679               allocated_cells = g_slist_prepend (allocated_cells, cell);
 680
 681               position += sizes[j].minimum_size;
 682               position += priv->spacing;
 683             }
 684
 685           g_free (sizes);
 686         }
 687     }
 688
 689   if (free_allocs)
 690     g_free (group_allocs);
 691
 692   /* Note it might not be important to reverse the list here at all,
 693    * we have the correct positions, no need to allocate from left to right */
 694   return g_slist_reverse (allocated_cells);
 695 }
 696
 697 /*************************************************************
 698  *                      GObjectClass                         *
 699  *************************************************************/
 700 static void
 701 gtk_cell_area_box_finalize (GObject *object)
 702 {
 703   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (object);
 704   GtkCellAreaBoxPrivate *priv = box->priv;
 705   GSList                *l;
 706
 707   /* Unref/free the context list */
 708   for (l = priv->contexts; l; l = l->next)
 709     g_object_weak_unref (G_OBJECT (l->data), (GWeakNotify)context_weak_notify, box);
 710
 711   g_slist_free (priv->contexts);
 712   priv->contexts = NULL;
 713
 714   /* Free the cell grouping info */
 715   cell_groups_clear (box);
 716   g_array_free (priv->groups, TRUE);
 717
 718   G_OBJECT_CLASS (gtk_cell_area_box_parent_class)->finalize (object);
 719 }
 720
 721 static void
 722 gtk_cell_area_box_dispose (GObject *object)
 723 {
 724   G_OBJECT_CLASS (gtk_cell_area_box_parent_class)->dispose (object);
 725 }
 726
 727 static void
 728 gtk_cell_area_box_set_property (GObject       *object,
 729                                 guint          prop_id,
 730                                 const GValue  *value,
 731                                 GParamSpec    *pspec)
 732 {
 733   GtkCellAreaBox *box = GTK_CELL_AREA_BOX (object);
 734
 735   switch (prop_id)
 736     {
 737     case PROP_ORIENTATION:
 738       box->priv->orientation = g_value_get_enum (value);
 739
 740       /* Notify that size needs to be requested again */
 741       flush_contexts (box);
 742       break;
 743     case PROP_SPACING:
 744       gtk_cell_area_box_set_spacing (box, g_value_get_int (value));
 745       break;
 746     default:
 747       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 748       break;
 749     }
 750 }
 751
 752 static void
 753 gtk_cell_area_box_get_property (GObject     *object,
 754                                 guint        prop_id,
 755                                 GValue      *value,
 756                                 GParamSpec  *pspec)
 757 {
 758   GtkCellAreaBox *box = GTK_CELL_AREA_BOX (object);
 759
 760   switch (prop_id)
 761     {
 762     case PROP_ORIENTATION:
 763       g_value_set_enum (value, box->priv->orientation);
 764       break;
 765     case PROP_SPACING:
 766       g_value_set_int (value, gtk_cell_area_box_get_spacing (box));
 767       break;
 768     default:
 769       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 770       break;
 771     }
 772 }
 773
 774 /*************************************************************
 775  *                    GtkCellAreaClass                       *
 776  *************************************************************/
 777 static void
 778 gtk_cell_area_box_add (GtkCellArea        *area,
 779                        GtkCellRenderer    *renderer)
 780 {
 781   gtk_cell_area_box_pack_start (GTK_CELL_AREA_BOX (area),
 782                                 renderer, FALSE, TRUE);
 783 }
 784
 785 static void
 786 gtk_cell_area_box_remove (GtkCellArea        *area,
 787                           GtkCellRenderer    *renderer)
 788 {
 789   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 790   GtkCellAreaBoxPrivate *priv = box->priv;
 791   GList                 *node;
 792
 793   node = g_list_find_custom (priv->cells, renderer,
 794                              (GCompareFunc)cell_info_find);
 795
 796   if (node)
 797     {
 798       CellInfo *info = node->data;
 799
 800       cell_info_free (info);
 801
 802       priv->cells = g_list_delete_link (priv->cells, node);
 803
 804       /* Reconstruct cell groups */
 805       cell_groups_rebuild (box);
 806     }
 807   else
 808     g_warning ("Trying to remove a cell renderer that is not present GtkCellAreaBox");
 809 }
 810
 811 static void
 812 gtk_cell_area_box_forall (GtkCellArea        *area,
 813                           GtkCellCallback     callback,
 814                           gpointer            callback_data)
 815 {
 816   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
 817   GtkCellAreaBoxPrivate *priv = box->priv;
 818   GList                 *list;
 819
 820   for (list = priv->cells; list; list = list->next)
 821     {
 822       CellInfo *info = list->data;
 823
 824       callback (info->renderer, callback_data);
 825     }
 826 }
 827
 828 static void
 829 gtk_cell_area_box_get_cell_allocation (GtkCellArea          *area,
 830                                        GtkCellAreaContext   *context,
 831                                        GtkWidget            *widget,
 832                                        GtkCellRenderer      *renderer,
 833                                        const GdkRectangle   *cell_area,
 834                                        GdkRectangle         *allocation)
 835 {
 836   GtkCellAreaBox        *box      = GTK_CELL_AREA_BOX (area);
 837   GtkCellAreaBoxPrivate *priv     = box->priv;
 838   GtkCellAreaBoxContext *box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
 839   GSList                *allocated_cells, *l;
 840
 841   *allocation = *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_context, widget,
 846                                          priv->orientation == GTK_ORIENTATION_HORIZONTAL ?
 847                                          cell_area->width : cell_area->height);
 848
 849   for (l = allocated_cells; l; l = l->next)
 850     {
 851       AllocatedCell *cell = l->data;
 852
 853       if (cell->renderer == renderer)
 854         {
 855           if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
 856             {
 857               allocation->x     = cell_area->x + cell->position;
 858               allocation->width = cell->size;
 859             }
 860           else
 861             {
 862               allocation->y      = cell_area->y + cell->position;
 863               allocation->height = cell->size;
 864             }
 865
 866           break;
 867         }
 868     }
 869
 870   g_slist_foreach (allocated_cells, (GFunc)allocated_cell_free, NULL);
 871   g_slist_free (allocated_cells);
 872 }
 873
 874 enum {
 875   FOCUS_NONE,
 876   FOCUS_PREV,
 877   FOCUS_NEXT
 878 };
 879
 880 static gint
 881 gtk_cell_area_box_event (GtkCellArea          *area,
 882                          GtkCellAreaContext   *context,
 883                          GtkWidget            *widget,
 884                          GdkEvent             *event,
 885                          const GdkRectangle   *cell_area,
 886                          GtkCellRendererState  flags)
 887 {
 888   gint retval;
 889
 890   /* First let the parent class handle activation of cells via keystrokes */
 891   retval =
 892     GTK_CELL_AREA_CLASS (gtk_cell_area_box_parent_class)->event (area, context, widget,
 893                                                                  event, cell_area, flags);
 894
 895   if (retval)
 896     return retval;
 897
 898   /* Also detect mouse events, for mouse events we need to allocate the renderers
 899    * and find which renderer needs to be activated.
 900    */
 901   if (event->type == GDK_BUTTON_PRESS)
 902     {
 903       GdkEventButton *button_event = (GdkEventButton *)event;
 904
 905       if (button_event->button == 1)
 906         {
 907           GtkCellAreaBox        *box      = GTK_CELL_AREA_BOX (area);
 908           GtkCellAreaBoxPrivate *priv     = box->priv;
 909           GtkCellAreaBoxContext *box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
 910           GSList                *allocated_cells, *l;
 911           GdkRectangle           cell_background, inner_area;
 912           gint                   event_x, event_y;
 913
 914           /* We may need some semantics to tell us the offset of the event
 915            * window we are handling events for (i.e. GtkTreeView has a bin_window) */
 916           event_x = button_event->x;
 917           event_y = button_event->y;
 918
 919           cell_background = *cell_area;
 920
 921           /* Get a list of cells with allocation sizes decided regardless
 922            * of alignments and pack order etc. */
 923           allocated_cells = get_allocated_cells (box, box_context, widget,
 924                                                  priv->orientation == GTK_ORIENTATION_HORIZONTAL ?
 925                                                  cell_area->width : cell_area->height);
 926
 927           for (l = allocated_cells; l; l = l->next)
 928             {
 929               AllocatedCell *cell = l->data;
 930
 931               if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
 932                 {
 933                   cell_background.x     = cell_area->x + cell->position;
 934                   cell_background.width = cell->size;
 935                 }
 936               else
 937                 {
 938                   cell_background.y      = cell_area->y + cell->position;
 939                   cell_background.height = cell->size;
 940                 }
 941
 942               /* Remove margins from the background area to produce the cell area
 943                */
 944               gtk_cell_area_inner_cell_area (area, widget, &cell_background, &inner_area);
 945
 946               if (event_x >= inner_area.x && event_x <= inner_area.x + inner_area.width &&
 947                   event_y >= inner_area.y && event_y <= inner_area.y + inner_area.height)
 948                 {
 949                   GtkCellRenderer *event_renderer = NULL;
 950
 951                   if (gtk_cell_renderer_can_focus (cell->renderer))
 952                     event_renderer = cell->renderer;
 953                   else
 954                     {
 955                       GtkCellRenderer *focus_renderer;
 956
 957                       /* A renderer can have focus siblings but that renderer might not be
 958                        * focusable for every row... so we go on to check can_focus here. */
 959                       focus_renderer = gtk_cell_area_get_focus_from_sibling (area, cell->renderer);
 960
 961                       if (focus_renderer && gtk_cell_renderer_can_focus (focus_renderer))
 962                         event_renderer = focus_renderer;
 963                     }
 964
 965                   if (event_renderer)
 966                     {
 967                       if (gtk_cell_area_get_edited_cell (area))
 968                         {
 969                           /* XXX Was it really canceled in this case ? */
 970                           gtk_cell_area_stop_editing (area, TRUE);
 971                           gtk_cell_area_set_focus_cell (area, event_renderer);
 972                           retval = TRUE;
 973                         }
 974                       else
 975                         {
 976                           /* If we are activating via a focus sibling, we need to fix the
 977                            * cell area */
 978                           if (event_renderer != cell->renderer)
 979                             gtk_cell_area_inner_cell_area (area, widget, cell_area, &cell_background);
 980
 981                           gtk_cell_area_set_focus_cell (area, event_renderer);
 982
 983                           retval = gtk_cell_area_activate_cell (area, widget, event_renderer,
 984                                                                 event, &cell_background, flags);
 985                         }
 986                       break;
 987                     }
 988                 }
 989             }
 990           g_slist_foreach (allocated_cells, (GFunc)allocated_cell_free, NULL);
 991           g_slist_free (allocated_cells);
 992         }
 993     }
 994
 995   return retval;
 996 }
 997
 998 static void
 999 gtk_cell_area_box_render (GtkCellArea          *area,
1000                           GtkCellAreaContext   *context,
1001                           GtkWidget            *widget,
1002                           cairo_t              *cr,
1003                           const GdkRectangle   *background_area,
1004                           const GdkRectangle   *cell_area,
1005                           GtkCellRendererState  flags,
1006                           gboolean              paint_focus)
1007 {
1008   GtkCellAreaBox        *box      = GTK_CELL_AREA_BOX (area);
1009   GtkCellAreaBoxPrivate *priv     = box->priv;
1010   GtkCellAreaBoxContext *box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
1011   GSList                *allocated_cells, *l;
1012   GdkRectangle           cell_background, inner_area;
1013   GtkCellRenderer       *focus_cell = NULL;
1014   GdkRectangle           focus_rect = { 0, };
1015   gboolean               first_focus_cell = TRUE;
1016
1017   if (flags & GTK_CELL_RENDERER_FOCUSED)
1018     {
1019       focus_cell = gtk_cell_area_get_focus_cell (area);
1020       flags &= ~GTK_CELL_RENDERER_FOCUSED;
1021     }
1022
1023   cell_background = *cell_area;
1024
1025   /* Get a list of cells with allocation sizes decided regardless
1026    * of alignments and pack order etc. */
1027   allocated_cells = get_allocated_cells (box, box_context, widget,
1028                                          priv->orientation == GTK_ORIENTATION_HORIZONTAL ?
1029                                          cell_area->width : cell_area->height);
1030
1031   for (l = allocated_cells; l; l = l->next)
1032     {
1033       AllocatedCell       *cell = l->data;
1034       GtkCellRendererState cell_fields = 0;
1035       GdkRectangle         render_background;
1036
1037       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1038         {
1039           cell_background.x     = cell_area->x + cell->position;
1040           cell_background.width = cell->size;
1041         }
1042       else
1043         {
1044           cell_background.y      = cell_area->y + cell->position;
1045           cell_background.height = cell->size;
1046         }
1047
1048       /* Remove margins from the background area to produce the cell area
1049        */
1050       gtk_cell_area_inner_cell_area (area, widget, &cell_background, &inner_area);
1051
1052       /* Add portions of the background_area to the cell_background
1053        * to create the render_background */
1054       render_background = cell_background;
1055
1056       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1057         {
1058           if (l == allocated_cells)
1059             {
1060               render_background.width += render_background.x - background_area->x;
1061               render_background.x      = background_area->x;
1062             }
1063
1064           if (l->next == NULL)
1065               render_background.width =
1066                 background_area->width - (render_background.x - background_area->x);
1067
1068           render_background.y      = background_area->y;
1069           render_background.height = background_area->height;
1070         }
1071       else
1072         {
1073           if (l == allocated_cells)
1074             {
1075               render_background.height += render_background.y - background_area->y;
1076               render_background.y       = background_area->y;
1077             }
1078
1079           if (l->next == NULL)
1080               render_background.height =
1081                 background_area->height - (render_background.y - background_area->y);
1082
1083           render_background.x     = background_area->x;
1084           render_background.width = background_area->width;
1085         }
1086
1087       if (focus_cell &&
1088           (cell->renderer == focus_cell ||
1089            gtk_cell_area_is_focus_sibling (area, focus_cell, cell->renderer)))
1090         {
1091           cell_fields |= GTK_CELL_RENDERER_FOCUSED;
1092
1093           if (paint_focus)
1094             {
1095               GdkRectangle cell_focus;
1096
1097               gtk_cell_area_aligned_cell_area (area, widget, cell->renderer, &inner_area, &cell_focus);
1098
1099               /* Accumulate the focus rectangle for all focus siblings */
1100               if (first_focus_cell)
1101                 {
1102                   focus_rect       = cell_focus;
1103                   first_focus_cell = FALSE;
1104                 }
1105               else
1106                 gdk_rectangle_union (&focus_rect, &cell_focus, &focus_rect);
1107             }
1108         }
1109
1110       /* We have to do some per-cell considerations for the 'flags'
1111        * for focus handling */
1112       gtk_cell_renderer_render (cell->renderer, cr, widget,
1113                                 &render_background, &inner_area,
1114                                 flags | cell_fields);
1115     }
1116
1117   if (paint_focus && focus_rect.width != 0 && focus_rect.height != 0)
1118     {
1119       GtkStateType renderer_state =
1120         flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
1121         (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
1122          (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE : GTK_STATE_NORMAL));
1123
1124       gtk_paint_focus (gtk_widget_get_style (widget), cr,
1125                        renderer_state, widget,
1126                        gtk_cell_area_get_style_detail (area),
1127                        focus_rect.x,     focus_rect.y,
1128                        focus_rect.width, focus_rect.height);
1129     }
1130
1131
1132   g_slist_foreach (allocated_cells, (GFunc)allocated_cell_free, NULL);
1133   g_slist_free (allocated_cells);
1134 }
1135
1136 static void
1137 gtk_cell_area_box_set_cell_property (GtkCellArea        *area,
1138                                      GtkCellRenderer    *renderer,
1139                                      guint               prop_id,
1140                                      const GValue       *value,
1141                                      GParamSpec         *pspec)
1142 {
1143   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
1144   GtkCellAreaBoxPrivate *priv = box->priv;
1145   GList                 *node;
1146   CellInfo              *info;
1147   gboolean               rebuild = FALSE;
1148   gboolean               val;
1149   GtkPackType            pack_type;
1150
1151   node = g_list_find_custom (priv->cells, renderer,
1152                              (GCompareFunc)cell_info_find);
1153   if (!node)
1154     return;
1155
1156   info = node->data;
1157
1158   switch (prop_id)
1159     {
1160     case CELL_PROP_EXPAND:
1161       val = g_value_get_boolean (value);
1162
1163       if (info->expand != val)
1164         {
1165           info->expand = val;
1166           rebuild      = TRUE;
1167         }
1168       break;
1169
1170     case CELL_PROP_ALIGN:
1171       val = g_value_get_boolean (value);
1172
1173       if (info->align != val)
1174         {
1175           info->align = val;
1176           rebuild     = TRUE;
1177         }
1178       break;
1179
1180     case CELL_PROP_PACK_TYPE:
1181       pack_type = g_value_get_enum (value);
1182
1183       if (info->pack != pack_type)
1184         {
1185           info->pack = pack_type;
1186           rebuild    = TRUE;
1187         }
1188       break;
1189     default:
1190       GTK_CELL_AREA_WARN_INVALID_CHILD_PROPERTY_ID (area, prop_id, pspec);
1191       break;
1192     }
1193
1194   /* Groups need to be rebuilt */
1195   if (rebuild)
1196     cell_groups_rebuild (box);
1197 }
1198
1199 static void
1200 gtk_cell_area_box_get_cell_property (GtkCellArea        *area,
1201                                      GtkCellRenderer    *renderer,
1202                                      guint               prop_id,
1203                                      GValue             *value,
1204                                      GParamSpec         *pspec)
1205 {
1206   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
1207   GtkCellAreaBoxPrivate *priv = box->priv;
1208   GList                 *node;
1209   CellInfo              *info;
1210
1211   node = g_list_find_custom (priv->cells, renderer,
1212                              (GCompareFunc)cell_info_find);
1213   if (!node)
1214     return;
1215
1216   info = node->data;
1217
1218   switch (prop_id)
1219     {
1220     case CELL_PROP_EXPAND:
1221       g_value_set_boolean (value, info->expand);
1222       break;
1223
1224     case CELL_PROP_ALIGN:
1225       g_value_set_boolean (value, info->align);
1226       break;
1227
1228     case CELL_PROP_PACK_TYPE:
1229       g_value_set_enum (value, info->pack);
1230       break;
1231     default:
1232       GTK_CELL_AREA_WARN_INVALID_CHILD_PROPERTY_ID (area, prop_id, pspec);
1233       break;
1234     }
1235 }
1236
1237
1238 static GtkCellAreaContext *
1239 gtk_cell_area_box_create_context (GtkCellArea *area)
1240 {
1241   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
1242   GtkCellAreaBoxPrivate *priv = box->priv;
1243   GtkCellAreaContext    *context =
1244     (GtkCellAreaContext *)g_object_new (GTK_TYPE_CELL_AREA_BOX_CONTEXT,
1245                                      "area", area, NULL);
1246
1247   priv->contexts = g_slist_prepend (priv->contexts, context);
1248
1249   g_object_weak_ref (G_OBJECT (context), (GWeakNotify)context_weak_notify, box);
1250
1251   /* Tell the new group about our cell layout */
1252   init_context_group (box, GTK_CELL_AREA_BOX_CONTEXT (context));
1253
1254   return context;
1255 }
1256
1257 static GtkSizeRequestMode
1258 gtk_cell_area_box_get_request_mode (GtkCellArea *area)
1259 {
1260   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (area);
1261   GtkCellAreaBoxPrivate *priv = box->priv;
1262
1263   return (priv->orientation) == GTK_ORIENTATION_HORIZONTAL ?
1264     GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH :
1265     GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT;
1266 }
1267
1268 static void
1269 compute_size (GtkCellAreaBox        *box,
1270               GtkOrientation         orientation,
1271               GtkCellAreaBoxContext *context,
1272               GtkWidget             *widget,
1273               gint                   for_size,
1274               gint                  *minimum_size,
1275               gint                  *natural_size)
1276 {
1277   GtkCellAreaBoxPrivate *priv = box->priv;
1278   GtkCellArea           *area = GTK_CELL_AREA (box);
1279   GList                 *list;
1280   gint                   i;
1281   gint                   min_size = 0;
1282   gint                   nat_size = 0;
1283
1284   for (i = 0; i < priv->groups->len; i++)
1285     {
1286       CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
1287       gint       group_min = 0, group_nat = 0;
1288
1289       for (list = group->cells; list; list = list->next)
1290         {
1291           CellInfo *info = list->data;
1292           gint      renderer_min_size, renderer_nat_size;
1293
1294           if (!gtk_cell_renderer_get_visible (info->renderer))
1295               continue;
1296
1297           gtk_cell_area_request_renderer (area, info->renderer, orientation, widget, for_size,
1298                                           &renderer_min_size, &renderer_nat_size);
1299
1300           if (orientation == priv->orientation)
1301             {
1302               if (min_size > 0)
1303                 {
1304                   min_size += priv->spacing;
1305                   nat_size += priv->spacing;
1306                 }
1307
1308               if (group_min > 0)
1309                 {
1310                   group_min += priv->spacing;
1311                   group_nat += priv->spacing;
1312                 }
1313
1314               min_size  += renderer_min_size;
1315               nat_size  += renderer_nat_size;
1316               group_min += renderer_min_size;
1317               group_nat += renderer_nat_size;
1318             }
1319           else
1320             {
1321               min_size  = MAX (min_size, renderer_min_size);
1322               nat_size  = MAX (nat_size, renderer_nat_size);
1323               group_min = MAX (group_min, renderer_min_size);
1324               group_nat = MAX (group_nat, renderer_nat_size);
1325             }
1326         }
1327
1328       if (for_size < 0)
1329         {
1330           if (orientation == GTK_ORIENTATION_HORIZONTAL)
1331             gtk_cell_area_box_context_push_group_width (context, group->id, group_min, group_nat);
1332           else
1333             gtk_cell_area_box_context_push_group_height (context, group->id, group_min, group_nat);
1334         }
1335     }
1336
1337   *minimum_size = min_size;
1338   *natural_size = nat_size;
1339 }
1340
1341 GtkRequestedSize *
1342 get_group_sizes (GtkCellArea    *area,
1343                  CellGroup      *group,
1344                  GtkOrientation  orientation,
1345                  GtkWidget      *widget,
1346                  gint           *n_sizes)
1347 {
1348   GtkRequestedSize *sizes;
1349   GList            *l;
1350   gint              i;
1351
1352   *n_sizes = count_visible_cells (group, NULL);
1353   sizes    = g_new (GtkRequestedSize, *n_sizes);
1354
1355   for (l = group->cells, i = 0; l; l = l->next)
1356     {
1357       CellInfo *info = l->data;
1358
1359       if (!gtk_cell_renderer_get_visible (info->renderer))
1360         continue;
1361
1362       sizes[i].data = info;
1363
1364       gtk_cell_area_request_renderer (area, info->renderer,
1365                                       orientation, widget, -1,
1366                                       &sizes[i].minimum_size,
1367                                       &sizes[i].natural_size);
1368
1369       i++;
1370     }
1371
1372   return sizes;
1373 }
1374
1375 static void
1376 compute_group_size_for_opposing_orientation (GtkCellAreaBox     *box,
1377                                              CellGroup          *group,
1378                                              GtkWidget          *widget,
1379                                              gint                for_size,
1380                                              gint               *minimum_size,
1381                                              gint               *natural_size)
1382 {
1383   GtkCellAreaBoxPrivate *priv = box->priv;
1384   GtkCellArea           *area = GTK_CELL_AREA (box);
1385
1386   /* Exception for single cell groups */
1387   if (group->n_cells == 1)
1388     {
1389       CellInfo *info = group->cells->data;
1390
1391       gtk_cell_area_request_renderer (area, info->renderer,
1392                                       OPPOSITE_ORIENTATION (priv->orientation),
1393                                       widget, for_size, minimum_size, natural_size);
1394     }
1395   else
1396     {
1397       GtkRequestedSize *orientation_sizes;
1398       CellInfo         *info;
1399       gint              n_sizes, i;
1400       gint              avail_size     = for_size;
1401       gint              extra_size, extra_extra;
1402       gint              min_size = 0, nat_size = 0;
1403
1404       orientation_sizes = get_group_sizes (area, group, priv->orientation, widget, &n_sizes);
1405
1406       /* First naturally allocate the cells in the group into the for_size */
1407       avail_size -= (n_sizes - 1) * priv->spacing;
1408       for (i = 0; i < n_sizes; i++)
1409         avail_size -= orientation_sizes[i].minimum_size;
1410
1411       avail_size = gtk_distribute_natural_allocation (avail_size, n_sizes, orientation_sizes);
1412
1413       /* Calculate/distribute expand for cells */
1414       if (group->expand_cells > 0)
1415         {
1416           extra_size  = avail_size / group->expand_cells;
1417           extra_extra = avail_size % group->expand_cells;
1418         }
1419       else
1420         extra_size = extra_extra = 0;
1421
1422       for (i = 0; i < n_sizes; i++)
1423         {
1424           gint cell_min, cell_nat;
1425
1426           info = orientation_sizes[i].data;
1427
1428           if (info->expand)
1429             {
1430               orientation_sizes[i].minimum_size += extra_size;
1431               if (extra_extra)
1432                 {
1433                   orientation_sizes[i].minimum_size++;
1434                   extra_extra--;
1435                 }
1436             }
1437
1438           gtk_cell_area_request_renderer (area, info->renderer,
1439                                           OPPOSITE_ORIENTATION (priv->orientation),
1440                                           widget,
1441                                           orientation_sizes[i].minimum_size,
1442                                           &cell_min, &cell_nat);
1443
1444           min_size = MAX (min_size, cell_min);
1445           nat_size = MAX (nat_size, cell_nat);
1446         }
1447
1448       *minimum_size = min_size;
1449       *natural_size = nat_size;
1450
1451       g_free (orientation_sizes);
1452     }
1453 }
1454
1455 static void
1456 compute_size_for_opposing_orientation (GtkCellAreaBox        *box,
1457                                        GtkCellAreaBoxContext *context,
1458                                        GtkWidget             *widget,
1459                                        gint                   for_size,
1460                                        gint                  *minimum_size,
1461                                        gint                  *natural_size)
1462 {
1463   GtkCellAreaBoxPrivate *priv = box->priv;
1464   CellGroup             *group;
1465   GtkRequestedSize      *orientation_sizes;
1466   gint                   n_groups, n_expand_groups, i;
1467   gint                   avail_size = for_size;
1468   gint                   extra_size, extra_extra;
1469   gint                   min_size = 0, nat_size = 0;
1470
1471   n_expand_groups = count_expand_groups (box);
1472
1473   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1474     orientation_sizes = gtk_cell_area_box_context_get_widths (context, &n_groups);
1475   else
1476     orientation_sizes = gtk_cell_area_box_context_get_heights (context, &n_groups);
1477
1478   /* First start by naturally allocating space among groups of cells */
1479   avail_size -= (n_groups - 1) * priv->spacing;
1480   for (i = 0; i < n_groups; i++)
1481     avail_size -= orientation_sizes[i].minimum_size;
1482
1483   avail_size = gtk_distribute_natural_allocation (avail_size, n_groups, orientation_sizes);
1484
1485   /* Calculate/distribute expand for groups */
1486   if (n_expand_groups > 0)
1487     {
1488       extra_size  = avail_size / n_expand_groups;
1489       extra_extra = avail_size % n_expand_groups;
1490     }
1491   else
1492     extra_size = extra_extra = 0;
1493
1494   /* Now we need to naturally allocate sizes for cells in each group
1495    * and push the height-for-width for each group accordingly while accumulating
1496    * the overall height-for-width for this row.
1497    */
1498   for (i = 0; i < n_groups; i++)
1499     {
1500       gint group_min, group_nat;
1501       gint group_idx = GPOINTER_TO_INT (orientation_sizes[i].data);
1502
1503       group = &g_array_index (priv->groups, CellGroup, group_idx);
1504
1505       if (group->expand_cells > 0)
1506         {
1507           orientation_sizes[i].minimum_size += extra_size;
1508           if (extra_extra)
1509             {
1510               orientation_sizes[i].minimum_size++;
1511               extra_extra--;
1512             }
1513         }
1514
1515       /* Now we have the allocation for the group, request it's height-for-width */
1516       compute_group_size_for_opposing_orientation (box, group, widget,
1517                                                    orientation_sizes[i].minimum_size,
1518                                                    &group_min, &group_nat);
1519
1520       min_size = MAX (min_size, group_min);
1521       nat_size = MAX (nat_size, group_nat);
1522     }
1523
1524   *minimum_size = min_size;
1525   *natural_size = nat_size;
1526
1527   g_free (orientation_sizes);
1528 }
1529
1530
1531
1532 static void
1533 gtk_cell_area_box_get_preferred_width (GtkCellArea        *area,
1534                                        GtkCellAreaContext *context,
1535                                        GtkWidget          *widget,
1536                                        gint               *minimum_width,
1537                                        gint               *natural_width)
1538 {
1539   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1540   GtkCellAreaBoxContext *box_context;
1541   gint                   min_width, nat_width;
1542
1543   g_return_if_fail (GTK_IS_CELL_AREA_BOX_CONTEXT (context));
1544
1545   box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
1546
1547   /* Compute the size of all renderers for current row data,
1548    * bumping cell alignments in the context along the way */
1549   compute_size (box, GTK_ORIENTATION_HORIZONTAL,
1550                 box_context, widget, -1, &min_width, &nat_width);
1551
1552   if (minimum_width)
1553     *minimum_width = min_width;
1554
1555   if (natural_width)
1556     *natural_width = nat_width;
1557 }
1558
1559 static void
1560 gtk_cell_area_box_get_preferred_height (GtkCellArea        *area,
1561                                         GtkCellAreaContext *context,
1562                                         GtkWidget          *widget,
1563                                         gint               *minimum_height,
1564                                         gint               *natural_height)
1565 {
1566   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1567   GtkCellAreaBoxContext *box_context;
1568   gint                   min_height, nat_height;
1569
1570   g_return_if_fail (GTK_IS_CELL_AREA_BOX_CONTEXT (context));
1571
1572   box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
1573
1574   /* Compute the size of all renderers for current row data,
1575    * bumping cell alignments in the context along the way */
1576   compute_size (box, GTK_ORIENTATION_VERTICAL,
1577                 box_context, widget, -1, &min_height, &nat_height);
1578
1579   if (minimum_height)
1580     *minimum_height = min_height;
1581
1582   if (natural_height)
1583     *natural_height = nat_height;
1584 }
1585
1586 static void
1587 gtk_cell_area_box_get_preferred_height_for_width (GtkCellArea        *area,
1588                                                   GtkCellAreaContext *context,
1589                                                   GtkWidget          *widget,
1590                                                   gint                width,
1591                                                   gint               *minimum_height,
1592                                                   gint               *natural_height)
1593 {
1594   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1595   GtkCellAreaBoxContext *box_context;
1596   GtkCellAreaBoxPrivate *priv;
1597   gint                   min_height, nat_height;
1598
1599   g_return_if_fail (GTK_IS_CELL_AREA_BOX_CONTEXT (context));
1600
1601   box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
1602   priv        = box->priv;
1603
1604   if (priv->orientation == GTK_ORIENTATION_VERTICAL)
1605     {
1606       /* Add up vertical requests of height for width and push the overall
1607        * cached sizes for alignments */
1608       compute_size (box, priv->orientation, box_context, widget, width, &min_height, &nat_height);
1609     }
1610   else
1611     {
1612       /* Juice: virtually allocate cells into the for_width using the
1613        * alignments and then return the overall height for that width, and cache it */
1614       compute_size_for_opposing_orientation (box, box_context, widget, width, &min_height, &nat_height);
1615     }
1616
1617   if (minimum_height)
1618     *minimum_height = min_height;
1619
1620   if (natural_height)
1621     *natural_height = nat_height;
1622 }
1623
1624 static void
1625 gtk_cell_area_box_get_preferred_width_for_height (GtkCellArea        *area,
1626                                                   GtkCellAreaContext *context,
1627                                                   GtkWidget          *widget,
1628                                                   gint                height,
1629                                                   gint               *minimum_width,
1630                                                   gint               *natural_width)
1631 {
1632   GtkCellAreaBox        *box = GTK_CELL_AREA_BOX (area);
1633   GtkCellAreaBoxContext *box_context;
1634   GtkCellAreaBoxPrivate *priv;
1635   gint                   min_width, nat_width;
1636
1637   g_return_if_fail (GTK_IS_CELL_AREA_BOX_CONTEXT (context));
1638
1639   box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
1640   priv        = box->priv;
1641
1642   if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
1643     {
1644       /* Add up horizontal requests of width for height and push the overall
1645        * cached sizes for alignments */
1646       compute_size (box, priv->orientation, box_context, widget, height, &min_width, &nat_width);
1647     }
1648   else
1649     {
1650       /* Juice: horizontally allocate cells into the for_height using the
1651        * alignments and then return the overall width for that height, and cache it */
1652       compute_size_for_opposing_orientation (box, box_context, widget, height, &min_width, &nat_width);
1653     }
1654
1655   if (minimum_width)
1656     *minimum_width = min_width;
1657
1658   if (natural_width)
1659     *natural_width = nat_width;
1660 }
1661
1662 static gboolean
1663 gtk_cell_area_box_focus (GtkCellArea      *area,
1664                          GtkDirectionType  direction)
1665 {
1666   GtkCellAreaBox        *box   = GTK_CELL_AREA_BOX (area);
1667   GtkCellAreaBoxPrivate *priv  = box->priv;
1668   gint                   cycle = FOCUS_NONE;
1669   gboolean               cycled_focus = FALSE;
1670   GtkCellRenderer       *focus_cell;
1671
1672   focus_cell = gtk_cell_area_get_focus_cell (area);
1673
1674   switch (direction)
1675     {
1676     case GTK_DIR_TAB_FORWARD:
1677       cycle = FOCUS_NEXT;
1678       break;
1679     case GTK_DIR_TAB_BACKWARD:
1680       cycle = FOCUS_PREV;
1681       break;
1682     case GTK_DIR_UP:
1683       if (priv->orientation == GTK_ORIENTATION_VERTICAL || !focus_cell)
1684         cycle = FOCUS_PREV;
1685       break;
1686     case GTK_DIR_DOWN:
1687       if (priv->orientation == GTK_ORIENTATION_VERTICAL || !focus_cell)
1688         cycle = FOCUS_NEXT;
1689       break;
1690     case GTK_DIR_LEFT:
1691       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL || !focus_cell)
1692         cycle = FOCUS_PREV;
1693       break;
1694     case GTK_DIR_RIGHT:
1695       if (priv->orientation == GTK_ORIENTATION_HORIZONTAL || !focus_cell)
1696         cycle = FOCUS_NEXT;
1697       break;
1698     default:
1699       break;
1700     }
1701
1702   if (cycle != FOCUS_NONE)
1703     {
1704       gboolean  found_cell = FALSE;
1705       GList    *list;
1706       gint      i;
1707
1708       /* If there is no focused cell, focus on the first (or last) one in the list */
1709       if (!focus_cell)
1710         found_cell = TRUE;
1711
1712       for (i = (cycle == FOCUS_NEXT) ? 0 : priv->groups->len -1;
1713            cycled_focus == FALSE && i >= 0 && i < priv->groups->len;
1714            i = (cycle == FOCUS_NEXT) ? i + 1 : i - 1)
1715         {
1716           CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
1717
1718           for (list = (cycle == FOCUS_NEXT) ? g_list_first (group->cells) : g_list_last (group->cells);
1719                list; list = (cycle == FOCUS_NEXT) ? list->next : list->prev)
1720             {
1721               CellInfo *info = list->data;
1722
1723               if (info->renderer == focus_cell)
1724                 found_cell = TRUE;
1725               else if (found_cell)
1726                 {
1727                   if (gtk_cell_renderer_can_focus (info->renderer))
1728                     {
1729                       gtk_cell_area_set_focus_cell (area, info->renderer);
1730
1731                       cycled_focus = TRUE;
1732                       break;
1733                     }
1734                 }
1735             }
1736         }
1737     }
1738
1739   if (!cycled_focus)
1740     gtk_cell_area_set_focus_cell (area, NULL);
1741
1742   return cycled_focus;
1743 }
1744
1745
1746 /*************************************************************
1747  *                    GtkCellLayoutIface                     *
1748  *************************************************************/
1749 static void
1750 gtk_cell_area_box_cell_layout_init (GtkCellLayoutIface *iface)
1751 {
1752   iface->pack_start = gtk_cell_area_box_layout_pack_start;
1753   iface->pack_end   = gtk_cell_area_box_layout_pack_end;
1754   iface->reorder    = gtk_cell_area_box_layout_reorder;
1755 }
1756
1757 static void
1758 gtk_cell_area_box_layout_pack_start (GtkCellLayout      *cell_layout,
1759                                      GtkCellRenderer    *renderer,
1760                                      gboolean            expand)
1761 {
1762   gtk_cell_area_box_pack_start (GTK_CELL_AREA_BOX (cell_layout), renderer, expand, TRUE);
1763 }
1764
1765 static void
1766 gtk_cell_area_box_layout_pack_end (GtkCellLayout      *cell_layout,
1767                                    GtkCellRenderer    *renderer,
1768                                    gboolean            expand)
1769 {
1770   gtk_cell_area_box_pack_end (GTK_CELL_AREA_BOX (cell_layout), renderer, expand, TRUE);
1771 }
1772
1773 static void
1774 gtk_cell_area_box_layout_reorder (GtkCellLayout      *cell_layout,
1775                                   GtkCellRenderer    *renderer,
1776                                   gint                position)
1777 {
1778   GtkCellAreaBox        *box  = GTK_CELL_AREA_BOX (cell_layout);
1779   GtkCellAreaBoxPrivate *priv = box->priv;
1780   GList                 *node;
1781   CellInfo              *info;
1782
1783   node = g_list_find_custom (priv->cells, renderer,
1784                              (GCompareFunc)cell_info_find);
1785
1786   if (node)
1787     {
1788       info = node->data;
1789
1790       priv->cells = g_list_delete_link (priv->cells, node);
1791       priv->cells = g_list_insert (priv->cells, info, position);
1792
1793       cell_groups_rebuild (box);
1794     }
1795 }
1796
1797 /*************************************************************
1798  *                            API                            *
1799  *************************************************************/
1800 GtkCellArea *
1801 gtk_cell_area_box_new (void)
1802 {
1803   return (GtkCellArea *)g_object_new (GTK_TYPE_CELL_AREA_BOX, NULL);
1804 }
1805
1806 void
1807 gtk_cell_area_box_pack_start  (GtkCellAreaBox  *box,
1808                                GtkCellRenderer *renderer,
1809                                gboolean         expand,
1810                                gboolean         align)
1811 {
1812   GtkCellAreaBoxPrivate *priv;
1813   CellInfo              *info;
1814
1815   g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
1816   g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
1817
1818   priv = box->priv;
1819
1820   if (g_list_find_custom (priv->cells, renderer,
1821                           (GCompareFunc)cell_info_find))
1822     {
1823       g_warning ("Refusing to add the same cell renderer to a GtkCellAreaBox twice");
1824       return;
1825     }
1826
1827   info = cell_info_new (renderer, GTK_PACK_START, expand, align);
1828
1829   priv->cells = g_list_append (priv->cells, info);
1830
1831   cell_groups_rebuild (box);
1832 }
1833
1834 void
1835 gtk_cell_area_box_pack_end (GtkCellAreaBox  *box,
1836                             GtkCellRenderer *renderer,
1837                             gboolean         expand,
1838                             gboolean         align)
1839 {
1840   GtkCellAreaBoxPrivate *priv;
1841   CellInfo              *info;
1842
1843   g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
1844   g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
1845
1846   priv = box->priv;
1847
1848   if (g_list_find_custom (priv->cells, renderer,
1849                           (GCompareFunc)cell_info_find))
1850     {
1851       g_warning ("Refusing to add the same cell renderer to a GtkCellArea twice");
1852       return;
1853     }
1854
1855   info = cell_info_new (renderer, GTK_PACK_END, expand, align);
1856
1857   priv->cells = g_list_append (priv->cells, info);
1858
1859   cell_groups_rebuild (box);
1860 }
1861
1862 gint
1863 gtk_cell_area_box_get_spacing (GtkCellAreaBox  *box)
1864 {
1865   g_return_val_if_fail (GTK_IS_CELL_AREA_BOX (box), 0);
1866
1867   return box->priv->spacing;
1868 }
1869
1870 void
1871 gtk_cell_area_box_set_spacing (GtkCellAreaBox  *box,
1872                                gint             spacing)
1873 {
1874   GtkCellAreaBoxPrivate *priv;
1875
1876   g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
1877
1878   priv = box->priv;
1879
1880   if (priv->spacing != spacing)
1881     {
1882       priv->spacing = spacing;
1883
1884       g_object_notify (G_OBJECT (box), "spacing");
1885
1886       /* Notify that size needs to be requested again */
1887       flush_contexts (box);
1888     }
1889 }