git.maemo.org Git - hildon/blob - hildon/hildon-caption.c

   1 /*
   2  * This file is a part of hildon
   3  *
   4  * Copyright (C) 2005, 2006 Nokia Corporation, all rights reserved.
   5  *
   6  * Contact: Rodrigo Novo <rodrigo.novo@nokia.com>
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public License
  10  * as published by the Free Software Foundation; version 2.1 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  *
  23  */
  24
  25 /**
  26  * SECTION:hildon-caption
  27  * @short_description: A single-child container widget that precedes the
  28  * contained widget with a field label and an optional icon.
  29  *
  30  * #HildonCaption is a single-child container widget that precedes the
  31  * contained widget with a field label and an optional icon. It allows
  32  * grouping of several controls together. When a captioned widget has focus,
  33  * both widget and caption label are displayed with active focus.
  34  */
  35
  36 #ifdef                                          HAVE_CONFIG_H
  37 #include                                        <config.h>
  38 #endif
  39
  40 #include                                        <libintl.h>
  41 #include                                        <gtk/gtk.h>
  42
  43 #include                                        "hildon-defines.h"
  44 #include                                        "hildon-caption.h"
  45 #include                                        "hildon-caption-private.h"
  46
  47 #define                                         _(String)\
  48                                                 dgettext("hildon-libs", String)
  49
  50 #define                                         HILDON_CAPTION_SPACING 6
  51
  52 static GtkEventBox*                             parent_class = NULL;
  53
  54 static void
  55 hildon_caption_class_init                       (HildonCaptionClass *caption_class);
  56
  57 static void
  58 hildon_caption_init                             (HildonCaption *caption);
  59
  60 static void
  61 hildon_caption_size_request                     (GtkWidget *widget,
  62                                                  GtkRequisition *requisition);
  63
  64 static void
  65 hildon_caption_size_allocate                    (GtkWidget *widget,
  66                                                  GtkAllocation *allocation);
  67
  68 static void
  69 hildon_caption_forall                           (GtkContainer *container,
  70                                                  gboolean include_internals,
  71                                                  GtkCallback callback,
  72                                                  gpointer data );
  73
  74 static void
  75 hildon_caption_hierarchy_changed                (GtkWidget *widget,
  76                                                  GtkWidget *previous_toplevel);
  77
  78 static void
  79 hildon_caption_set_focus                        (GtkWindow *window,
  80                                                  GtkWidget *widget,
  81                                                  GtkWidget *caption);
  82
  83 static void
  84 hildon_caption_grab_focus                       (GtkWidget *widget);
  85
  86 static void
  87 hildon_caption_activate                         (GtkWidget *widget);
  88
  89 static void
  90 hildon_caption_set_property                     (GObject *object,
  91                                                  guint param_id,
  92                                                  const GValue *value,
  93                                                  GParamSpec *pspec );
  94
  95 static void
  96 hildon_caption_get_property                     (GObject *object,
  97                                                  guint param_id,
  98                                                  GValue *value,
  99                                                  GParamSpec *pspec);
 100
 101 static void
 102 hildon_caption_destroy                          (GtkObject *self);
 103
 104 static gboolean
 105 hildon_caption_button_press                     (GtkWidget *widget,
 106                                                  GdkEventButton *event);
 107
 108 static void
 109 hildon_caption_set_label_text                   (HildonCaptionPrivate *priv,
 110                                                  gboolean markup);
 111
 112 static void
 113 hildon_caption_set_child_property               (GtkContainer *container,
 114                                                  GtkWidget *child,
 115                                                  guint property_id,
 116                                                  const GValue *value,
 117                                                  GParamSpec *pspec);
 118
 119 static void
 120 hildon_caption_get_child_property               (GtkContainer *container,
 121                                                  GtkWidget *child,
 122                                                  guint property_id,
 123                                                  GValue *value,
 124                                                  GParamSpec *pspec);
 125
 126 enum
 127 {
 128     PROP_0,
 129     PROP_LABEL,
 130     PROP_MARKUP,
 131     PROP_ICON,
 132     PROP_STATUS,
 133     PROP_SEPARATOR,
 134     PROP_SIZE_GROUP,
 135     PROP_ICON_POSITION,
 136 };
 137
 138 enum
 139 {
 140     CHILD_PROP_NONE,
 141     CHILD_PROP_EXPAND
 142 };
 143
 144 /**
 145  * hildon_caption_get_type:
 146  *
 147  * Initializes and returns the type of a hildon caption.
 148  *
 149  * Returns: GType of #HildonCaption
 150  */
 151 GType G_GNUC_CONST
 152 hildon_caption_get_type                         (void)
 153 {
 154     static GType caption_type = 0;
 155
 156     if (!caption_type)
 157     {
 158         static const GTypeInfo caption_info = {
 159             sizeof (HildonCaptionClass),
 160             NULL,       /* base_init */
 161             NULL,       /* base_finalize */
 162             (GClassInitFunc) hildon_caption_class_init,
 163             NULL,       /* class_finalize */
 164             NULL,       /* class_data */
 165             sizeof (HildonCaption),
 166             0,  /* n_preallocs */
 167             (GInstanceInitFunc) hildon_caption_init,
 168         };
 169         caption_type = g_type_register_static (GTK_TYPE_EVENT_BOX,
 170                 "HildonCaption", &caption_info, 0 );
 171     }
 172     return caption_type;
 173 }
 174
 175 /*
 176  * Initialises the caption class.
 177  */
 178 static void
 179 hildon_caption_class_init                       (HildonCaptionClass *caption_class)
 180 {
 181     GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (caption_class);
 182     GObjectClass *gobject_class = G_OBJECT_CLASS (caption_class);
 183     GtkContainerClass *container_class = GTK_CONTAINER_CLASS (caption_class);
 184
 185     parent_class = g_type_class_peek_parent (caption_class);
 186
 187     g_type_class_add_private (caption_class, sizeof (HildonCaptionPrivate));
 188
 189     /* Override virtual functions */
 190     gobject_class->get_property                 = hildon_caption_get_property;
 191     gobject_class->set_property                 = hildon_caption_set_property;
 192     caption_class->activate                     = (gpointer) hildon_caption_activate;
 193     GTK_OBJECT_CLASS(caption_class)->destroy    = hildon_caption_destroy;
 194
 195     container_class->forall                     = hildon_caption_forall;
 196     container_class->set_child_property         = hildon_caption_set_child_property;
 197     container_class->get_child_property         = hildon_caption_get_child_property;
 198
 199     widget_class->hierarchy_changed             = hildon_caption_hierarchy_changed;
 200     widget_class->size_request                  = hildon_caption_size_request;
 201     widget_class->size_allocate                 = hildon_caption_size_allocate;
 202     widget_class->button_press_event            = hildon_caption_button_press;
 203     widget_class->grab_focus                    = hildon_caption_grab_focus;
 204
 205     /* Create new signals and properties */
 206     widget_class->activate_signal = g_signal_new ("activate",
 207             G_OBJECT_CLASS_TYPE (
 208                 gobject_class),
 209             G_SIGNAL_RUN_FIRST |
 210             G_SIGNAL_ACTION,
 211             G_STRUCT_OFFSET (HildonCaptionClass,
 212                 activate), NULL, NULL,
 213             g_cclosure_marshal_VOID__VOID,
 214             G_TYPE_NONE, 0);
 215
 216     /**
 217      * HildonCaption:label:
 218      *
 219      * Caption label.
 220      */
 221     g_object_class_install_property (gobject_class, PROP_LABEL,
 222             g_param_spec_string ("label",
 223                 "Current label", "Caption label",
 224                 NULL, G_PARAM_READABLE | G_PARAM_WRITABLE) );
 225
 226     /**
 227      * HildonCaption:markup:
 228      *
 229      * Caption markup. Mutually exclusive with label.
 230      */
 231     g_object_class_install_property (gobject_class, PROP_MARKUP,
 232             g_param_spec_string ("markup",
 233                 "Current markup", "Caption markup",
 234                 NULL, G_PARAM_WRITABLE) );
 235
 236     /**
 237      * HildonCaption:icon:
 238      *
 239      * The icon shown on the caption area.
 240      */
 241     g_object_class_install_property (gobject_class, PROP_ICON,
 242             g_param_spec_object ("icon",
 243                 "Current icon",
 244                 "The icon shown on the caption area",
 245                 GTK_TYPE_WIDGET, G_PARAM_READABLE |
 246                 G_PARAM_WRITABLE) );
 247     /**
 248      * HildonCaption:status:
 249      *
 250      * Mandatory or optional status.
 251      */
 252     g_object_class_install_property (gobject_class, PROP_STATUS,
 253             g_param_spec_enum ("status",
 254                 "Current status",
 255                 "Mandatory or optional status",
 256                 HILDON_TYPE_CAPTION_STATUS,
 257                 HILDON_CAPTION_OPTIONAL,
 258                 G_PARAM_READABLE | G_PARAM_WRITABLE) );
 259     /**
 260      * HildonCaption:icon-position:
 261      *
 262      * If the icon is positioned on the left or right side.
 263      */
 264     g_object_class_install_property (gobject_class, PROP_ICON_POSITION,
 265             g_param_spec_enum ("icon-position",
 266                 "Icon position",
 267                 "Whether the icon is on the left or right side",
 268                 HILDON_TYPE_CAPTION_ICON_POSITION,
 269                 HILDON_CAPTION_POSITION_RIGHT,
 270                 G_PARAM_READABLE | G_PARAM_WRITABLE) );
 271
 272     /**
 273      * HildonCaption:size_group:
 274      *
 275      * Current size group the caption is in.
 276      */
 277     g_object_class_install_property (gobject_class, PROP_SIZE_GROUP,
 278             g_param_spec_object ("size_group",
 279                 "Current size group",
 280                 "Current size group the caption is in",
 281                 GTK_TYPE_SIZE_GROUP, G_PARAM_READABLE |
 282                 G_PARAM_WRITABLE) );
 283
 284     /**
 285      * HildonCaption:separator:
 286      *
 287      * The current separator.
 288      */
 289     g_object_class_install_property (gobject_class, PROP_SEPARATOR,
 290             g_param_spec_string ("separator",
 291                 "Current separator", "Current separator",
 292                 _("ecdg_ti_caption_separator"),
 293                 G_PARAM_READABLE | G_PARAM_WRITABLE) );
 294
 295     /* Create child properties. These are related to
 296        child <-> parent relationship, not to either of objects itself */
 297     gtk_container_class_install_child_property (container_class,
 298             CHILD_PROP_EXPAND,
 299             g_param_spec_boolean ("expand",
 300                 "Same as GtkBox expand.",
 301                 "Same as GtkBox expand. Wheter the child should be expanded or not.",
 302                 FALSE,
 303                 G_PARAM_READWRITE));
 304 }
 305
 306 /* Destroy can be called multiple times, remember to set pointers to NULL */
 307 static void
 308 hildon_caption_destroy                          (GtkObject *self)
 309 {
 310     HildonCaptionPrivate *priv = HILDON_CAPTION_GET_PRIVATE (self);
 311
 312     /* Free our internal child */
 313     if (priv && priv->caption_area)
 314     {
 315         gtk_widget_unparent (priv->caption_area);
 316         priv->caption_area = NULL;
 317     }
 318
 319     /* Free user provided strings */
 320     if (priv && priv->text)
 321     {
 322         g_free (priv->text);
 323         priv->text = NULL;
 324     }
 325
 326     if (priv && priv->separator)
 327     {
 328         g_free (priv->separator);
 329         priv->separator = NULL;
 330     }
 331
 332     /* Parent classes destroy takes care of user packed contents */
 333     if (GTK_OBJECT_CLASS (parent_class)->destroy)
 334         GTK_OBJECT_CLASS (parent_class)->destroy (self);
 335 }
 336
 337 static void
 338 hildon_caption_set_property                     (GObject *object,
 339                                                  guint param_id,
 340                                                  const GValue *value,
 341                                                  GParamSpec *pspec)
 342 {
 343     HildonCaptionPrivate *priv = HILDON_CAPTION_GET_PRIVATE (object);
 344
 345     switch (param_id)
 346     {
 347         case PROP_ICON_POSITION:
 348             hildon_caption_set_icon_position (HILDON_CAPTION (object), g_value_get_enum (value));
 349             break;
 350
 351         case PROP_LABEL:
 352             /* Free old label string */
 353             if (priv->text)
 354             {
 355                 g_free (priv->text);
 356                 priv->text = NULL;
 357             }
 358
 359             /* Update label */
 360             priv->text = g_value_dup_string (value);
 361             hildon_caption_set_label_text (priv, FALSE);
 362             break;
 363
 364         case PROP_MARKUP:
 365             /* Free old label string */
 366             if (priv->text)
 367             {
 368                 g_free (priv->text);
 369                 priv->text = NULL;
 370             }
 371
 372             /* Update label */
 373             priv->text = g_value_dup_string (value);
 374             hildon_caption_set_label_text (priv, TRUE);
 375             break;
 376
 377         case PROP_ICON:
 378             /* Remove old icon */
 379             if (priv->icon)
 380                 gtk_container_remove (GTK_CONTAINER (priv->icon_align), priv->icon);
 381
 382             /* Pack and display new icon */
 383             priv->icon = g_value_get_object (value);
 384             if (priv->icon)
 385             {
 386                 gtk_container_add (GTK_CONTAINER (priv->icon_align), priv->icon);
 387                 gtk_widget_show_all (priv->caption_area);
 388             }
 389             break;
 390
 391         case PROP_STATUS:
 392             priv->status = g_value_get_enum (value);
 393             break;
 394
 395         case PROP_SIZE_GROUP:
 396             /* Detach from previous size group */
 397             if (priv->group)
 398                 gtk_size_group_remove_widget (priv->group, priv->caption_area);
 399
 400             priv->group = g_value_get_object (value);
 401
 402             /* Attach to new size group */
 403             if (priv->group)
 404                 gtk_size_group_add_widget (priv->group, priv->caption_area);
 405
 406             gtk_widget_queue_draw (GTK_WIDGET(object));
 407             break;
 408
 409         case PROP_SEPARATOR:
 410
 411             /* Free old separator */
 412             if (priv->separator)
 413             {
 414                 g_free (priv->separator);
 415                 priv->separator = NULL;
 416             }
 417
 418             priv->separator = g_value_dup_string (value);
 419             hildon_caption_set_label_text (priv, FALSE);
 420             break;
 421
 422         default:
 423             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 424             break;
 425     }
 426 }
 427
 428 static void
 429 hildon_caption_get_property                     (GObject *object,
 430                                                  guint param_id,
 431                                                  GValue *value,
 432                                                  GParamSpec *pspec)
 433 {
 434     HildonCaptionPrivate *priv = HILDON_CAPTION_GET_PRIVATE (object);
 435
 436     switch (param_id)
 437     {
 438         case PROP_LABEL:
 439             g_value_set_string (value, priv->text);
 440             break;
 441
 442         case PROP_ICON:
 443             g_value_set_object (value, priv->icon);
 444             break;
 445
 446         case PROP_STATUS:
 447             g_value_set_enum (value, priv->status);
 448             break;
 449
 450         case PROP_ICON_POSITION:
 451             g_value_set_enum (value, priv->icon_position);
 452             break;
 453
 454         case PROP_SIZE_GROUP:
 455             g_value_set_object (value, priv->group);
 456             break;
 457
 458         case PROP_SEPARATOR:
 459             g_value_set_string (value, priv->separator);
 460             break;
 461
 462         default:
 463             G_OBJECT_WARN_INVALID_PROPERTY_ID(object, param_id, pspec);
 464             break;
 465     }
 466 }
 467
 468 static void
 469 hildon_caption_set_child_property               (GtkContainer *container,
 470                                                  GtkWidget *child,
 471                                                  guint property_id,
 472                                                  const GValue *value,
 473                                                  GParamSpec *pspec)
 474 {
 475     switch (property_id)
 476     {
 477         case CHILD_PROP_EXPAND:
 478             hildon_caption_set_child_expand (HILDON_CAPTION (container),
 479                     g_value_get_boolean (value));
 480             break;
 481
 482         default:
 483             G_OBJECT_WARN_INVALID_PROPERTY_ID (container, property_id, pspec);
 484             break;
 485     }
 486 }
 487
 488 static void
 489 hildon_caption_get_child_property               (GtkContainer *container,
 490                                                  GtkWidget *child,
 491                                                  guint property_id,
 492                                                  GValue *value,
 493                                                  GParamSpec *pspec)
 494 {
 495     switch (property_id)
 496     {
 497         case CHILD_PROP_EXPAND:
 498             g_value_set_boolean (value, hildon_caption_get_child_expand(
 499                         HILDON_CAPTION (container)));
 500             break;
 501
 502         default:
 503             G_OBJECT_WARN_INVALID_PROPERTY_ID(container, property_id, pspec);
 504             break;
 505     }
 506 }
 507
 508 /* We want to activate out child control on button press */
 509 static gboolean
 510 hildon_caption_button_press                     (GtkWidget *widget,
 511                                                  GdkEventButton *event)
 512 {
 513     gtk_widget_grab_focus (GTK_BIN (widget)->child);
 514
 515     /* we'll update our focused state in set-focus when/if the child receives
 516      * focus */
 517
 518     return FALSE;
 519 }
 520
 521 static void
 522 hildon_caption_init                             (HildonCaption *caption)
 523 {
 524     HildonCaptionPrivate *priv = NULL;
 525
 526     /* Initialize startup state */
 527     priv = HILDON_CAPTION_GET_PRIVATE (caption);
 528
 529     priv->status = HILDON_CAPTION_OPTIONAL;
 530     priv->icon = NULL;
 531     priv->group = NULL;
 532     priv->is_focused = FALSE;
 533     priv->text = NULL;
 534
 535     priv->separator = g_strdup(_("ecdg_ti_caption_separator"));
 536
 537     gtk_widget_push_composite_child();
 538
 539     /* Create caption text */
 540     priv->caption_area = gtk_hbox_new (FALSE, HILDON_CAPTION_SPACING);
 541     priv->label = gtk_label_new (NULL);
 542     priv->icon_align = gtk_alignment_new (0.5f, 0.5f, 0.0f, 0.0f);
 543     priv->icon_position = HILDON_CAPTION_POSITION_RIGHT;
 544
 545     /* We want to receive button presses for child widget activation */
 546     gtk_event_box_set_above_child (GTK_EVENT_BOX (caption), FALSE);
 547     gtk_widget_add_events (GTK_WIDGET (caption), GDK_BUTTON_PRESS_MASK);
 548
 549     /* Pack text label caption layout */
 550     gtk_box_pack_end (GTK_BOX (priv->caption_area), priv->icon_align, FALSE, FALSE, 0);
 551     gtk_box_pack_end (GTK_BOX (priv->caption_area), priv->label, FALSE, FALSE, 0);
 552     gtk_widget_set_parent (priv->caption_area, GTK_WIDGET (caption));
 553
 554     gtk_widget_pop_composite_child ();
 555
 556     hildon_caption_set_child_expand (caption, TRUE);
 557
 558     gtk_widget_show_all (priv->caption_area);
 559 }
 560
 561 static void
 562 hildon_caption_set_focus                        (GtkWindow *window,
 563                                                  GtkWidget *widget,
 564                                                  GtkWidget *caption)
 565 {
 566     HildonCaptionPrivate *priv = HILDON_CAPTION_GET_PRIVATE (caption);
 567
 568     /* check if ancestor gone */
 569     if (! widget)
 570     {
 571         return;
 572     }
 573
 574     /* Try to find caption among the ancestors of widget */
 575     if (gtk_widget_is_ancestor (widget, caption))
 576     {
 577         priv->is_focused = TRUE;
 578         gtk_widget_queue_draw (caption);
 579         return;
 580     }
 581
 582     if (priv->is_focused == TRUE)
 583     {
 584         /* Caption wasn't found, so cannot focus */
 585         priv->is_focused = FALSE;
 586         gtk_widget_queue_draw (caption);
 587     }
 588 }
 589
 590 /* We need to connect/disconnect signal handlers to toplevel window
 591    in which we reside. Ww want to update connected signals if our
 592    parent changes */
 593 static void
 594 hildon_caption_hierarchy_changed                (GtkWidget *widget,
 595                                                  GtkWidget *previous_toplevel)
 596 {
 597     GtkWidget *current_ancestor;
 598
 599     if (GTK_WIDGET_CLASS (parent_class)->hierarchy_changed)
 600         GTK_WIDGET_CLASS (parent_class)->hierarchy_changed (widget, previous_toplevel);
 601
 602     /* If we already were inside a window, remove old handler */
 603     if (previous_toplevel) {
 604         /* This is a compilation workaround for gcc > 3.3 since glib is buggy */
 605         /* see http://bugzilla.gnome.org/show_bug.cgi?id=310175 */
 606 #ifdef __GNUC__
 607         __extension__
 608 #endif
 609             g_signal_handlers_disconnect_by_func
 610             (previous_toplevel, (gpointer) hildon_caption_set_focus, widget);
 611     }
 612
 613     current_ancestor = gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW);
 614
 615     /* Install new handler for focus movement */
 616     if (current_ancestor)
 617         g_signal_connect( current_ancestor, "set-focus",
 618                 G_CALLBACK (hildon_caption_set_focus), widget );
 619 }
 620
 621 static void
 622 hildon_caption_size_request                     (GtkWidget *widget,
 623                                                  GtkRequisition *requisition)
 624 {
 625     GtkRequisition req;
 626     HildonCaptionPrivate *priv = NULL;
 627     g_return_if_fail (HILDON_IS_CAPTION(widget));
 628
 629     priv = HILDON_CAPTION_GET_PRIVATE (widget);
 630
 631     /* Use the same size requisition for the main box of the caption */
 632     gtk_widget_size_request (priv->caption_area, &req);
 633
 634     if (GTK_WIDGET_CLASS (parent_class)->size_request)
 635         GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
 636
 637     requisition->width += req.width + HILDON_CAPTION_SPACING * 3;
 638
 639     if ((req.height + (2 * widget->style->ythickness)) > requisition->height)
 640         requisition->height = req.height + (2 * widget->style->ythickness);
 641 }
 642
 643 /* We use HILDON_CAPTION_SPACING to make it look a bit nicer */
 644 static void
 645 hildon_caption_size_allocate                    (GtkWidget *widget,
 646                                                  GtkAllocation *allocation)
 647 {
 648     GtkAllocation child_alloc;
 649     GtkAllocation caption_alloc;
 650     GtkRequisition req, child_req = {0};
 651     GtkWidget *child = NULL;
 652     HildonCaptionPrivate *priv = NULL;
 653     gboolean rtl;
 654
 655     g_assert (HILDON_IS_CAPTION (widget));
 656     priv = HILDON_CAPTION_GET_PRIVATE (widget);
 657
 658     /* Get the rtl status */
 659     rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
 660
 661     /* Position the caption to its allocated location */
 662     if (GTK_WIDGET_REALIZED (widget))
 663         gdk_window_move_resize (widget->window,
 664                 allocation->x + GTK_CONTAINER (widget)->border_width,
 665                 allocation->y + GTK_CONTAINER (widget)->border_width,
 666                 MAX (allocation->width - GTK_CONTAINER (widget)->border_width * 2, 0),
 667                 MAX (allocation->height - GTK_CONTAINER (widget)->border_width * 2, 0));
 668
 669     child = GTK_BIN (widget)->child;
 670     if (child)
 671         gtk_widget_get_child_requisition (child, &child_req);
 672
 673     widget->allocation = *allocation;
 674     gtk_widget_get_child_requisition (priv->caption_area, &req);
 675
 676     child_alloc.height = caption_alloc.height = allocation->height;
 677     child_alloc.width  = caption_alloc.width  = allocation->width;
 678     child_alloc.x = caption_alloc.x = caption_alloc.y = child_alloc.y = 0;
 679
 680     /* Center the captioned widget */
 681     if (rtl)
 682     {
 683         if (caption_alloc.width > child_req.width + HILDON_CAPTION_SPACING)
 684         {
 685             caption_alloc.x = caption_alloc.width - req.width;
 686             child_alloc.width = child_req.width;
 687         }
 688         caption_alloc.width -= child_req.width + HILDON_CAPTION_SPACING * 2;
 689     }
 690     else
 691     {
 692         if (child_alloc.width > req.width + HILDON_CAPTION_SPACING)
 693         {
 694             child_alloc.x += req.width + HILDON_CAPTION_SPACING * 2;
 695             caption_alloc.width = req.width;
 696         }
 697         /* Leave at least the space of the HILDON_CAPTION_SPACING in the left */
 698         caption_alloc.x = HILDON_CAPTION_SPACING;
 699
 700         /* Leave room for the other drawable parts of the caption control */
 701         child_alloc.width -= req.width + HILDON_CAPTION_SPACING * 2;
 702     }
 703
 704     /* Give the child at least its minimum requisition, unless it is expandable */
 705     if (! priv->expand && child && GTK_WIDGET_VISIBLE(child))
 706     {
 707         child_alloc.width  = MIN (child_alloc.width,  child_req.width);
 708         child_alloc.height = MIN (child_alloc.height, child_req.height);
 709         /* Center the child */
 710         child_alloc.y = (allocation->height - child_alloc.height -
 711                          2 * GTK_CONTAINER (widget)->border_width)/2;
 712     }
 713
 714     /* Ensure there are no negative dimensions */
 715     if (child_alloc.width < 0)
 716     {
 717         caption_alloc.width = req.width + child_alloc.width;
 718         child_alloc.width = 0;
 719         caption_alloc.width = MAX (caption_alloc.width, 0);
 720     }
 721
 722     if (rtl)
 723         child_alloc.x = caption_alloc.x - child_req.width - HILDON_CAPTION_SPACING * 2;
 724
 725     child_alloc.height = MAX (child_alloc.height, 0);
 726     caption_alloc.height = MAX (caption_alloc.height, 0);
 727
 728     if (child && GTK_WIDGET_VISIBLE(child) )
 729         gtk_widget_size_allocate (child, &child_alloc );
 730
 731     gtk_widget_size_allocate (priv->caption_area, &caption_alloc);
 732 }
 733
 734 static void
 735 hildon_caption_forall                           (GtkContainer *container,
 736                                                  gboolean include_internals,
 737                                                  GtkCallback callback,
 738                                                  gpointer data)
 739 {
 740     HildonCaptionPrivate *priv = NULL;
 741
 742     g_assert (HILDON_IS_CAPTION (container));
 743     g_assert (callback != NULL);
 744
 745     priv = HILDON_CAPTION_GET_PRIVATE (container);
 746
 747     /* Execute callback for the child widgets */
 748     if (GTK_CONTAINER_CLASS (parent_class)->forall)
 749         GTK_CONTAINER_CLASS (parent_class)->forall (container, include_internals, callback, data);
 750
 751     if (include_internals)
 752         /* Execute callback for the parent box as well */
 753         (*callback) (priv->caption_area, data);
 754 }
 755
 756 /**
 757  * hildon_caption_set_size_group:
 758  * @caption: a #HildonCaption
 759  * @new_group: a #GtkSizeGroup
 760  *
 761  * Sets a #GtkSizeGroup of a given captioned control.
 762  *
 763  */
 764 void
 765 hildon_caption_set_size_group                   (const HildonCaption *self,
 766                                                  GtkSizeGroup *group)
 767 {
 768     g_object_set (G_OBJECT(self), "size_group", group, NULL);
 769 }
 770
 771 /**
 772  * hildon_caption_get_size_group:
 773  * @caption: a #HildonCaption
 774  *
 775  * Queries given captioned control for the #GtkSizeGroup assigned to it.
 776  *
 777  * Returns: a #GtkSizeGroup
 778  *
 779  */
 780 GtkSizeGroup*
 781 hildon_caption_get_size_group                   (const HildonCaption *self)
 782 {
 783     HildonCaptionPrivate *priv;
 784     g_return_val_if_fail (HILDON_IS_CAPTION (self), NULL);
 785
 786     priv = HILDON_CAPTION_GET_PRIVATE(self);
 787
 788     return priv->group;
 789 }
 790
 791 /**
 792  * hildon_caption_new:
 793  * @group: a #GtkSizeGroup for controlling the size of related captions or %NULL
 794  * @value: the caption text to accompany the text entry.  The widget makes
 795  *          a copy of this text.
 796  * @control: the control that is to be captioned.
 797  * @icon: an icon to accompany the label or %NULL in case no icon should be displayed.
 798  * @flag: indicates whether this captioned control is mandatory or
 799  *         optional.
 800  *
 801  * Creates a new instance of #HildonCaption widget, with a specific
 802  * control and image.
 803  * Note: Clicking on a focused caption will trigger the activate signal.
 804  * The default behaviour for the caption's activate signal is to call
 805  * gtk_widget_activate() on its control.
 806  *
 807  * Returns: a new #HildonCaption
 808  */
 809 GtkWidget*
 810 hildon_caption_new                              (GtkSizeGroup *group,
 811                                                  const gchar *value,
 812                                                  GtkWidget *child,
 813                                                  GtkWidget *icon,
 814                                                  HildonCaptionStatus flag)
 815 {
 816     GtkWidget *widget;
 817     g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
 818
 819     widget = g_object_new (HILDON_TYPE_CAPTION,
 820             "label", value,
 821             "child", child,
 822             "size_group", group,
 823             "icon", icon,
 824             "status", flag,
 825             NULL);
 826
 827     /* Do not expand GtkCheckButton by default, we want to reduce its activation area */
 828     if (GTK_IS_CHECK_BUTTON (child))
 829       hildon_caption_set_child_expand (HILDON_CAPTION (widget), FALSE);
 830
 831     return widget;
 832 }
 833
 834 /**
 835  * hildon_caption_is_mandatory:
 836  * @caption: a #HildonCaption
 837  *
 838  * Queries whether @caption is mandatory.
 839  *
 840  * Returns: Whether this captioned control is mandatory.
 841  */
 842 gboolean
 843 hildon_caption_is_mandatory                     (const HildonCaption *caption)
 844 {
 845     HildonCaptionPrivate *priv;
 846
 847     g_return_val_if_fail (HILDON_IS_CAPTION (caption), FALSE);
 848
 849     priv = HILDON_CAPTION_GET_PRIVATE (caption);
 850
 851     return (priv->status == HILDON_CAPTION_MANDATORY);
 852 }
 853
 854 /**
 855  * hildon_caption_set_icon_position:
 856  * @caption: a #HildonCaption
 857  * @pos: one of the values from #HildonCaptionIconPosition
 858  *
 859  * Sets @caption<!-- -->'s icon position.
 860  *
 861  */
 862 void
 863 hildon_caption_set_icon_position                (HildonCaption *caption,
 864                                                  HildonCaptionIconPosition pos)
 865 {
 866     g_return_if_fail (HILDON_IS_CAPTION (caption));
 867     HildonCaptionPrivate *priv = HILDON_CAPTION_GET_PRIVATE (caption);
 868
 869     g_return_if_fail (priv->caption_area != NULL);
 870
 871     int order = (pos == HILDON_CAPTION_POSITION_LEFT) ? -1 : 0;
 872     gtk_box_reorder_child (GTK_BOX (priv->caption_area), priv->icon_align, order);
 873
 874     priv->icon_position = pos;
 875 }
 876
 877 /**
 878  * hildon_caption_get_icon_position:
 879  * @caption: a #HildonCaption
 880  *
 881  * Gets @caption<!-- -->'s icon position.
 882  *
 883  * Returns: one of the values from #HildonCaptionIconPosition.
 884  *
 885  */
 886
 887 HildonCaptionIconPosition
 888 hildon_caption_get_icon_position                (const HildonCaption *caption)
 889 {
 890     g_return_val_if_fail (HILDON_IS_CAPTION (caption), 0);
 891
 892     HildonCaptionPrivate *priv = HILDON_CAPTION_GET_PRIVATE (caption);
 893
 894     return priv->icon_position;
 895 }
 896
 897 /**
 898  * hildon_caption_set_status:
 899  * @caption: a #HildonCaption
 900  * @flag: one of the values from #HildonCaptionStatus
 901  *
 902  * Sets @caption<!-- -->'s status.
 903  */
 904 void
 905 hildon_caption_set_status                       (HildonCaption *caption,
 906                                                  HildonCaptionStatus flag)
 907 {
 908     g_return_if_fail (HILDON_IS_CAPTION(caption));
 909
 910     g_object_set (G_OBJECT(caption), "status", flag, NULL);
 911 }
 912
 913 /**
 914  * hildon_caption_get_status:
 915  * @caption: a #HildonCaption
 916  *
 917  * Gets @caption<!-- -->'s status.
 918  *
 919  * Returns: one of the values from #HildonCaptionStatus
 920  */
 921 HildonCaptionStatus
 922 hildon_caption_get_status                       (const HildonCaption *caption)
 923 {
 924     HildonCaptionPrivate *priv;
 925     g_return_val_if_fail (HILDON_IS_CAPTION (caption), HILDON_CAPTION_OPTIONAL);
 926
 927     priv = HILDON_CAPTION_GET_PRIVATE(caption);
 928
 929     return priv->status;
 930 }
 931
 932 /**
 933  * hildon_caption_set_icon_image:
 934  * @caption: a #HildonCaption
 935  * @icon : the #GtkImage to use as the icon.
 936  *         Calls gtk_widget_show() on the icon if it is not visible.
 937  *
 938  * Sets the icon image widget to be used by @caption.
 939  */
 940 void
 941 hildon_caption_set_icon_image                   (HildonCaption *caption,
 942                                                  GtkWidget *icon)
 943 {
 944     g_return_if_fail (HILDON_IS_CAPTION(caption));
 945
 946     g_object_set (G_OBJECT(caption), "icon", icon, NULL);
 947 }
 948
 949 /**
 950  * hildon_caption_get_icon_image:
 951  * @caption: a #HildonCaption
 952  *
 953  * Gets the icon image widget used by @caption.
 954  *
 955  * Returns: the #GtkImage widget that is being used as the icon by
 956  *            @caption, or %NULL if no icon image is in use.
 957  */
 958 GtkWidget*
 959 hildon_caption_get_icon_image                   (const HildonCaption *caption)
 960 {
 961     HildonCaptionPrivate *priv;
 962
 963     g_return_val_if_fail (HILDON_IS_CAPTION (caption), NULL);
 964
 965     priv = HILDON_CAPTION_GET_PRIVATE (caption);
 966
 967     return priv->icon;
 968 }
 969
 970 /**
 971  * hildon_caption_set_label:
 972  * @caption: a #HildonCaption
 973  * @label: the text to use
 974  *
 975  * Sets the label text that appears before the control.
 976  * Separator character is added to the end of the label string. By default
 977  * the separator is ":". See also hildon_caption_set_separator().
 978  *
 979 */
 980 void
 981 hildon_caption_set_label                        (HildonCaption *caption,
 982                                                  const gchar *label)
 983 {
 984     g_return_if_fail (HILDON_IS_CAPTION (caption));
 985
 986     g_object_set (G_OBJECT(caption), "label", label, NULL);
 987 }
 988
 989 /**
 990  * hildon_caption_set_label_markup:
 991  * @caption : a #HildonCaption
 992  * @markup : the markup text to use
 993  *
 994  * Sets the label markup text that appears before the control. It acts like
 995  * hildon_caption_set_label() but is using the markup text that allows to
 996  * specify text properties such as bold or italic.
 997  */
 998 void
 999 hildon_caption_set_label_markup                 (HildonCaption *caption,
1000                                                  const gchar *markup)
1001 {
1002     g_return_if_fail (HILDON_IS_CAPTION (caption));
1003
1004     g_object_set (G_OBJECT(caption), "markup", markup, NULL);
1005 }
1006
1007 /**
1008  * hildon_caption_get_label:
1009  * @caption : a #HildonCaption
1010  *
1011  * Gets the label of @caption
1012  *
1013  * Returns: the text currently being used as the label of @caption.
1014  * The string is owned by the label and the caller should never
1015  * free or modify this value.
1016  */
1017 gchar*
1018 hildon_caption_get_label                        (const HildonCaption *caption)
1019 {
1020     HildonCaptionPrivate *priv;
1021     g_return_val_if_fail (HILDON_IS_CAPTION (caption), "");
1022     priv = HILDON_CAPTION_GET_PRIVATE (caption);
1023
1024     return (gchar*) gtk_label_get_text (GTK_LABEL (priv->label));
1025 }
1026
1027 /**
1028  * hildon_caption_set_separator:
1029  * @caption: a #HildonCaption
1030  * @separator: the separator to use
1031  *
1032  * Sets the separator character that appears after the label.
1033  * The default seaparator character is ":".
1034  */
1035 void
1036 hildon_caption_set_separator                    (HildonCaption *caption,
1037                                                  const gchar *separator)
1038 {
1039     g_return_if_fail (HILDON_IS_CAPTION (caption));
1040
1041     g_object_set (G_OBJECT (caption), "separator", separator, NULL);
1042 }
1043
1044 /**
1045  * hildon_caption_get_separator:
1046  * @caption: a #HildonCaption
1047  *
1048  * Gets the separator string of @caption
1049  *
1050  * Returns: the text currently being used as the separator of the caption
1051  *  control. The string is owned by @caption and the caller should
1052  *  never free or modify this value.
1053  */
1054 gchar*
1055 hildon_caption_get_separator                    (const HildonCaption *caption)
1056 {
1057     HildonCaptionPrivate *priv;
1058     g_return_val_if_fail (HILDON_IS_CAPTION (caption), "");
1059
1060     priv = HILDON_CAPTION_GET_PRIVATE (caption);
1061
1062     return priv->separator;
1063 }
1064
1065 /* Activates the child control
1066  * We have this signal so that if needed an application can
1067  * know when we've been activated (useful for captions with
1068  * multiple children
1069  * FIXME: There never are multiple children. Possibly activate
1070  *  signal could be removed entirely? (does anyone use it?)
1071  */
1072 static void
1073 hildon_caption_activate                         (GtkWidget *widget)
1074 {
1075     GtkWidget *child = GTK_BIN (widget)->child;
1076     gtk_widget_grab_focus (child);
1077 }
1078
1079 static void
1080 hildon_caption_grab_focus                       (GtkWidget *widget)
1081 {
1082     gtk_widget_grab_focus (GTK_BIN (widget)->child);
1083 }
1084
1085 /**
1086  * hildon_caption_set_child_expand:
1087  * @caption: a #HildonCaption
1088  * @expand: whether the child is expandable.
1089  *
1090  * Sets child expandability.
1091  */
1092 void
1093 hildon_caption_set_child_expand                 (HildonCaption *caption,
1094                                                  gboolean expand)
1095 {
1096     HildonCaptionPrivate *priv = NULL;
1097     GtkWidget *child = NULL;
1098     g_return_if_fail (HILDON_IS_CAPTION (caption));
1099
1100     priv = HILDON_CAPTION_GET_PRIVATE (caption);
1101
1102     /* Did the setting really change? */
1103     if (priv->expand == expand)
1104         return;
1105
1106     priv->expand = expand;
1107     child = GTK_BIN (caption)->child;
1108
1109     /* We do not have a child, nothing to do */
1110     if (! GTK_IS_WIDGET (child))
1111         return;
1112
1113     if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (caption))
1114         gtk_widget_queue_resize (child);
1115
1116     gtk_widget_child_notify (child, "expand");
1117 }
1118
1119 /**
1120  * hildon_caption_get_child_expand:
1121  * @caption: a #HildonCaption
1122  *
1123  * Gets childs expandability.
1124  *
1125  * Returns: wheter the child is expandable or not.
1126  */
1127 gboolean
1128 hildon_caption_get_child_expand                 (const HildonCaption *caption)
1129 {
1130     HildonCaptionPrivate *priv = NULL;
1131     g_return_val_if_fail (HILDON_IS_CAPTION (caption), FALSE);
1132
1133     priv = HILDON_CAPTION_GET_PRIVATE (caption);
1134
1135     return priv->expand;
1136 }
1137
1138 static void
1139 hildon_caption_set_label_text                   (HildonCaptionPrivate *priv,
1140                                                  gboolean markup)
1141 {
1142     gchar *tmp = NULL;
1143     g_assert (priv != NULL);
1144
1145     if (priv->text)
1146     {
1147         if (priv->separator)
1148         {
1149             /* Don't duplicate the separator, if the string already contains one */
1150             if (g_str_has_suffix (priv->text, priv->separator))
1151             {
1152                 if (markup)
1153                     gtk_label_set_markup (GTK_LABEL (priv->label), priv->text);
1154                 else
1155                     gtk_label_set_text (GTK_LABEL (priv->label), priv->text);
1156             }
1157             else
1158             {
1159                 /* Append separator and set text */
1160                 tmp = g_strconcat( priv->text, priv->separator, NULL );
1161
1162                 if (markup)
1163                     gtk_label_set_markup (GTK_LABEL (priv->label), tmp);
1164                 else
1165                     gtk_label_set_text (GTK_LABEL (priv->label), tmp);
1166
1167                 g_free (tmp);
1168             }
1169         }
1170         else
1171         {
1172             if (markup)
1173                 gtk_label_set_markup (GTK_LABEL (priv->label), priv->text);
1174             else
1175                 gtk_label_set_text (GTK_LABEL (priv->label), priv->text);
1176         }
1177     }
1178     else
1179     {
1180         /* Clear the label */
1181         if (markup)
1182             gtk_label_set_markup (GTK_LABEL (priv->label), "");
1183         else
1184             gtk_label_set_text (GTK_LABEL (priv->label), "" );
1185     }
1186 }
1187
1188 /**
1189  * hildon_caption_set_label_alignment:
1190  * @caption: a #HildonCaption widget
1191  * @alignment: new vertical alignment
1192  *
1193  * Sets the vertical alignment to be used for the
1194  * text part of the caption. Applications need to
1195  * align the child control themselves.
1196  *
1197  */
1198 void
1199 hildon_caption_set_label_alignment              (HildonCaption *caption,
1200                                                  gfloat alignment)
1201 {
1202     HildonCaptionPrivate *priv;
1203
1204     g_return_if_fail (HILDON_IS_CAPTION (caption));
1205
1206     priv = HILDON_CAPTION_GET_PRIVATE (caption);
1207
1208     g_object_set (priv->label, "yalign", alignment, NULL);
1209     g_object_set (priv->icon_align, "yalign", alignment, NULL);
1210
1211 }
1212
1213 /**
1214  * hildon_caption_get_label_alignment:
1215  * @caption: a #HildonCaption widget
1216  *
1217  * Gets current vertical alignment for the text part.
1218  *
1219  * Returns: vertical alignment
1220  *
1221  */
1222 gfloat
1223 hildon_caption_get_label_alignment              (HildonCaption *caption)
1224 {
1225     HildonCaptionPrivate *priv;
1226     gfloat result;
1227
1228     g_return_val_if_fail (HILDON_IS_CAPTION (caption), 0);
1229     priv = HILDON_CAPTION_GET_PRIVATE (caption);
1230
1231     g_object_get (priv->label, "yalign", &result, NULL);
1232
1233     return result;
1234 }