3 * Copyright (C) 2010 Openismus GmbH
6 * Tristan Van Berkom <tristanvb@openismus.com>
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.
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.
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.
26 * @Short_Description: An abstract class for laying out #GtkCellRenderers
29 * The #GtkCellArea is an abstract class for #GtkCellLayout widgets (also referred
30 * to as "layouting widgets") to interface with an arbitrary number of #GtkCellRenderers
31 * and interact with the user for a given #GtkTreeModel row.
33 * The cell area handles events, focus navigation, drawing and wraps geometrical
34 * size requests and allocations for a given row of data.
36 * Usually users dont have to interact with the #GtkCellArea directly unless they
37 * are implementing a cell layouting widget themselves.
39 * <refsect2 id="cell-area-geometry-management">
40 * <title>Requesting area sizes</title>
42 * As outlined in <link linkend="geometry-management">GtkWidget's
43 * geometry management section</link>, GTK+ uses a height-for-width
44 * geometry managemen system to compute the sizes of widgets and user
45 * interfaces. #GtkCellArea uses the same semantics to calculate the
46 * size of an area for an arbitrary number of #GtkTreeModel rows.
48 * When requesting the size of a cell area one needs to calculate
49 * the size for a handful of rows, this will be done differently by
50 * different layouting widgets. For instance a #GtkTreeViewColumn
51 * always lines up the areas from top to bottom while a #GtkIconView
52 * on the other hand might enforce that all areas received the same
53 * width and wrap the areas around, requesting height for more cell
54 * areas when allocated less width.
56 * It's also important for areas to maintain some cell
57 * alignments with areas rendered for adjacent rows (cells can
58 * appear "columnized" inside an area even when the size of
59 * cells are different in each row). For this reason the #GtkCellArea
60 * uses a #GtkCellAreaContext object to store the alignments
61 * and sizes along the way (as well as the overall largest minimum
62 * and natural size for all the rows which have been calculated
63 * with the said context).
65 * The #GtkCellAreaContext is an opaque object specific to the
66 * #GtkCellArea which created it (see gtk_cell_area_create_context()).
67 * The owning cell layouting widget can create as many contexts as
68 * it wishes to calculate sizes of rows which should receive the
69 * same size in at least one orientation (horizontally or vertically),
70 * however it's important that the same #GtkCellAreaContext which
71 * was used to request the sizes for a given #GtkTreeModel row be
72 * used when rendering or processing events for that row.
74 * In order to request the width of all the rows at the root level
75 * of a #GtkTreeModel one would do the following:
77 * <title>Requesting the width of a hand full of GtkTreeModel rows.</title>
83 * valid = gtk_tree_model_get_iter_first (model, &iter);
86 * gtk_cell_area_apply_attributes (area, model, &iter, FALSE, FALSE);
87 * gtk_cell_area_get_preferred_width (area, context, widget, NULL, NULL);
89 * valid = gtk_tree_model_iter_next (model, &iter);
91 * gtk_cell_area_context_get_preferred_width (context, &minimum_width, &natural_width);
94 * Note that in this example it's not important to observe the returned minimum and
95 * natural width of the area for each row unless the cell layouting object is actually
96 * interested in the widths of individual rows. The overall width is however stored
97 * in the accompanying #GtkCellAreaContext object and can be consulted at any time.
99 * This can be useful since #GtkCellLayout widgets usually have to support requesting
100 * and rendering rows in treemodels with an exceedingly large amount of rows. The
101 * #GtkCellLayout widget in that case would calculate the required width of the rows
102 * in an idle or timeout source (see g_timeout_add()) and when the widget is requested
103 * its actual width in #GtkWidgetClass.get_preferred_width() it can simply consult the
104 * width accumulated so far in the #GtkCellAreaContext object.
106 * A simple example where rows are rendered from top to bottom and take up the full
107 * width of the layouting widget would look like:
109 * <title>A typical #GtkWidgetClass.get_preferred_width() for a layouting widget.</title>
112 * foo_get_preferred_width (GtkWidget *widget,
113 * gint *minimum_size,
114 * gint *natural_size)
116 * Foo *foo = FOO (widget);
117 * FooPrivate *priv = foo->priv;
119 * foo_ensure_at_least_one_handfull_of_rows_have_been_requested (foo);
121 * gtk_cell_area_context_get_preferred_width (priv->context, minimum_size, natural_size);
126 * In the above example the Foo widget has to make sure that some row sizes have
127 * been calculated (the amount of rows that Foo judged was appropriate to request
128 * space for in a single timeout iteration) before simply returning the amount
129 * of space required by the area via the #GtkCellAreaContext.
131 * Requesting the height for width (or width for height) of an area is a similar
132 * task except in this case the #GtkCellAreaContext does not store the data (actually
133 * it does not know how much space the layouting widget plans to allocate it for
134 * every row, it's up to the layouting widget to render each row of data with
135 * the appropriate height and width which was requested by the #GtkCellArea).
137 * In order to request the height for width of all the rows at the root level
138 * of a #GtkTreeModel one would do the following:
140 * <title>Requesting the height for width of a hand full of GtkTreeModel rows.</title>
143 * gint minimum_height;
144 * gint natural_height;
145 * gint full_minimum_height = 0;
146 * gint full_natural_height = 0;
148 * valid = gtk_tree_model_get_iter_first (model, &iter);
151 * gtk_cell_area_apply_attributes (area, model, &iter, FALSE, FALSE);
152 * gtk_cell_area_get_preferred_height_for_width (area, context, widget,
153 * width, &minimum_height, &natural_height);
155 * if (width_is_for_allocation)
156 * cache_row_height (&iter, minimum_height, natural_height);
158 * full_minimum_height += minimum_height;
159 * full_natural_height += natural_height;
161 * valid = gtk_tree_model_iter_next (model, &iter);
166 * Note that in the above example we would need to cache the heights returned for each
167 * treemodel row so that we would know what sizes to render the areas for each row. However
168 * we would only want to really cache the heights if the request is intended for the
169 * layouting widgets real allocation.
171 * In some cases the layouting widget is requested the height for an arbitrary for_width,
172 * this is a special case for layouting widgets who need to request size for tens of thousands
173 * of treemodel rows. For this case it's only important that the layouting widget calculate
174 * one reasonably sized chunk of rows and return that height synchronously. The reasoning here
175 * is that any layouting widget is at least capable of synchronously calculating enough
176 * height to fill the screen height (or scrolled window height) in response to a single call to
177 * #GtkWidgetClass.get_preferred_height_for_width(). Returning a perfect height for width that
178 * is larger than the screen area is inconsequential since after the layouting receives an
179 * allocation from a scrolled window it simply continues to drive the the scrollbar
180 * values while more and mode height is required for the row heights that are calculated
184 * <refsect2 id="cell-area-rendering">
185 * <title>Rendering Areas</title>
187 * Once area sizes have been aquired at least for the rows in the visible area of the
188 * layouting widget they can be rendered at #GtkWidgetClass.draw() time.
190 * A crued example of how to render all the rows at the root level runs as follows:
192 * <title>Requesting the width of a hand full of GtkTreeModel rows.</title>
194 * GtkAllocation allocation;
195 * GdkRectangle cell_area = { 0, };
197 * gint minimum_width;
198 * gint natural_width;
200 * gtk_widget_get_allocation (widget, &allocation);
201 * cell_area.width = allocation.width;
203 * valid = gtk_tree_model_get_iter_first (model, &iter);
206 * cell_area.height = get_cached_height_for_row (&iter);
208 * gtk_cell_area_apply_attributes (area, model, &iter, FALSE, FALSE);
209 * gtk_cell_area_render (area, context, widget, cr,
210 * &cell_area, &cell_area, state_flags, FALSE);
212 * cell_area.y += cell_area.height;
214 * valid = gtk_tree_model_iter_next (model, &iter);
218 * Note that the cached height in this example really depends on how the layouting
219 * widget works. The layouting widget might decide to give every row it's minimum
220 * or natural height or if the model content is expected to fit inside the layouting
221 * widget with no scrolled window it would make sense to calculate the allocation
222 * for each row at #GtkWidget.size_allocate() time using gtk_distribute_natural_allocation().
225 * <refsect2 id="cell-area-events-and-focus">
226 * <title>Handling Events and Driving Keyboard Focus</title>
228 * Passing events to the area is as simple as handling events on any normal
229 * widget and then passing them to the gtk_cell_area_event() api as they come
230 * in. Usually #GtkCellArea is only interested in button events, however some
231 * customized derived areas can be implemented who are interested in handling
232 * other events. Handling an event can trigger the #GtkCellArea::focus-changed
233 * signal to fire as well as #GtkCellArea::add-editable in the case that
234 * an editable cell was clicked and needs to start editing. You can call
235 * gtk_cell_area_stop_editing() at any time to cancel any cell editing
236 * that is currently in progress.
238 * The #GtkCellArea drives keyboard focus from cell to cell in a way similar
239 * to #GtkWidget. For layouting widgets that support giving focus to cells it's
240 * important to remember to pass %GTK_CELL_RENDERER_FOCUSED to the area functions
241 * for the row that has focus and to tell the area to paint the focus at render
244 * Layouting widgets that accept focus on cells should implement the #GtkWidgetClass.focus()
245 * virtual method. The layouting widget is always responsible for knowing where
246 * #GtkTreeModel rows are rendered inside the widget, so at #GtkWidgetClass.focus() time
247 * the layouting widget should use the #GtkCellArea methods to navigate focus inside the
248 * area and then observe the GtkDirectionType to pass the focus to adjacent rows and
251 * A basic example of how the #GtkWidgetClass.focus() virtual method should be implemented:
253 * <title>Implementing keyboard focus navigation when displaying rows from top to bottom.</title>
256 * foo_focus (GtkWidget *widget,
257 * GtkDirectionType direction)
259 * Foo *foo = FOO (widget);
260 * FooPrivate *priv = foo->priv;
262 * gboolean have_focus = FALSE;
264 * focus_row = priv->focus_row;
266 * if (!gtk_widget_has_focus (widget))
267 * gtk_widget_grab_focus (widget);
269 * valid = gtk_tree_model_iter_nth_child (priv->model, &iter, NULL, priv->focus_row);
272 * gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
274 * if (gtk_cell_area_focus (priv->area, direction))
276 * priv->focus_row = focus_row;
282 * if (direction == GTK_DIR_RIGHT ||
283 * direction == GTK_DIR_LEFT)
285 * else if (direction == GTK_DIR_UP ||
286 * direction == GTK_DIR_TAB_BACKWARD)
288 * if (focus_row == 0)
293 * valid = gtk_tree_model_iter_nth_child (priv->model, &iter, NULL, focus_row);
298 * if (focus_row == last_row)
303 * valid = gtk_tree_model_iter_next (priv->model, &iter);
314 * <refsect2 id="cell-properties">
315 * <title>Cell Properties</title>
317 * The #GtkCellArea introduces <emphasis>cell properties</emphasis> for #GtkCellRenderers in very
318 * much the same way that #GtkContainer introduces <link linkend="child-properties">child properties</link>
319 * for #GtkWidgets. This provides some general interfaces for defining the relationship cell areas
320 * have with thier cells. For instance in a #GtkCellAreaBox a cell might "expand" and recieve extra
321 * space when the area is allocated more than it's full natural request, or a cell might be configured
322 * to "align" with adjacent rows which were requested and rendered with the same #GtkCellAreaContext.
324 * Use gtk_cell_area_class_install_cell_property() to install cell properties
325 * for a cell area class and gtk_cell_area_class_find_cell_property() or
326 * gtk_cell_area_class_list_cell_properties() to get information about existing
329 * To set the value of a cell property, use gtk_cell_area_cell_set_property(),
330 * gtk_cell_area_cell_set() or gtk_cell_area_cell_set_valist().
331 * To obtain the value of a cell property, use
332 * gtk_cell_area_cell_get_property(), gtk_cell_area_cell_get() or
333 * gtk_cell_area_cell_get_valist().
346 #include "gtkcelllayout.h"
347 #include "gtkcellarea.h"
348 #include "gtkcellareacontext.h"
349 #include "gtkmarshalers.h"
350 #include "gtkprivate.h"
352 #include <gobject/gvaluecollector.h>
356 static void gtk_cell_area_dispose (GObject *object);
357 static void gtk_cell_area_finalize (GObject *object);
358 static void gtk_cell_area_set_property (GObject *object,
362 static void gtk_cell_area_get_property (GObject *object,
367 /* GtkCellAreaClass */
368 static gint gtk_cell_area_real_event (GtkCellArea *area,
369 GtkCellAreaContext *context,
372 const GdkRectangle *cell_area,
373 GtkCellRendererState flags);
374 static void gtk_cell_area_real_apply_attributes (GtkCellArea *area,
375 GtkTreeModel *tree_model,
377 gboolean is_expander,
378 gboolean is_expanded);
379 static void gtk_cell_area_real_get_preferred_height_for_width (GtkCellArea *area,
380 GtkCellAreaContext *context,
383 gint *minimum_height,
384 gint *natural_height);
385 static void gtk_cell_area_real_get_preferred_width_for_height (GtkCellArea *area,
386 GtkCellAreaContext *context,
390 gint *natural_width);
391 static gboolean gtk_cell_area_real_is_activatable (GtkCellArea *area);
392 static gboolean gtk_cell_area_real_activate (GtkCellArea *area,
393 GtkCellAreaContext *context,
395 const GdkRectangle *cell_area,
396 GtkCellRendererState flags);
398 /* GtkCellLayoutIface */
399 static void gtk_cell_area_cell_layout_init (GtkCellLayoutIface *iface);
400 static void gtk_cell_area_pack_default (GtkCellLayout *cell_layout,
401 GtkCellRenderer *renderer,
403 static void gtk_cell_area_clear (GtkCellLayout *cell_layout);
404 static void gtk_cell_area_add_attribute (GtkCellLayout *cell_layout,
405 GtkCellRenderer *renderer,
406 const gchar *attribute,
408 static void gtk_cell_area_set_cell_data_func (GtkCellLayout *cell_layout,
409 GtkCellRenderer *cell,
410 GtkCellLayoutDataFunc func,
412 GDestroyNotify destroy);
413 static void gtk_cell_area_clear_attributes (GtkCellLayout *cell_layout,
414 GtkCellRenderer *renderer);
415 static void gtk_cell_area_reorder (GtkCellLayout *cell_layout,
416 GtkCellRenderer *cell,
418 static GList *gtk_cell_area_get_cells (GtkCellLayout *cell_layout);
421 /* Used in foreach loop to check if a child renderer is present */
423 GtkCellRenderer *renderer;
424 gboolean has_renderer;
427 /* Used in foreach loop to get a cell's allocation */
429 GtkCellRenderer *renderer;
430 GdkRectangle allocation;
431 } RendererAllocationData;
433 /* Used in foreach loop to get a cell by position */
437 GtkCellRenderer *renderer;
438 GdkRectangle cell_area;
439 } CellByPositionData;
441 /* Attribute/Cell metadata */
443 const gchar *attribute;
450 GtkCellLayoutDataFunc func;
452 GDestroyNotify destroy;
455 static CellInfo *cell_info_new (GtkCellLayoutDataFunc func,
457 GDestroyNotify destroy);
458 static void cell_info_free (CellInfo *info);
459 static CellAttribute *cell_attribute_new (GtkCellRenderer *renderer,
460 const gchar *attribute,
462 static void cell_attribute_free (CellAttribute *attribute);
463 static gint cell_attribute_find (CellAttribute *cell_attribute,
464 const gchar *attribute);
466 /* Internal functions/signal emissions */
467 static void gtk_cell_area_add_editable (GtkCellArea *area,
468 GtkCellRenderer *renderer,
469 GtkCellEditable *editable,
470 const GdkRectangle *cell_area);
471 static void gtk_cell_area_remove_editable (GtkCellArea *area,
472 GtkCellRenderer *renderer,
473 GtkCellEditable *editable);
474 static void gtk_cell_area_set_edit_widget (GtkCellArea *area,
475 GtkCellEditable *editable);
476 static void gtk_cell_area_set_edited_cell (GtkCellArea *area,
477 GtkCellRenderer *renderer);
480 /* Struct to pass data along while looping over
481 * cell renderers to apply attributes
487 gboolean is_expander;
488 gboolean is_expanded;
491 struct _GtkCellAreaPrivate
493 /* The GtkCellArea bookkeeps any connected
494 * attributes in this hash table.
496 GHashTable *cell_info;
498 /* Current path is saved as a side-effect
499 * of gtk_cell_area_apply_attributes() */
502 /* Current cell being edited and editable widget used */
503 GtkCellEditable *edit_widget;
504 GtkCellRenderer *edited_cell;
506 /* Signal connections to the editable widget */
507 gulong remove_widget_id;
509 /* Currently focused cell */
510 GtkCellRenderer *focus_cell;
512 /* Tracking which cells are focus siblings of focusable cells */
513 GHashTable *focus_siblings;
515 /* Detail string to pass to gtk_paint_*() functions */
527 SIGNAL_APPLY_ATTRIBUTES,
529 SIGNAL_REMOVE_EDITABLE,
530 SIGNAL_FOCUS_CHANGED,
534 /* Keep the paramspec pool internal, no need to deliver notifications
535 * on cells. at least no percieved need for now */
536 static GParamSpecPool *cell_property_pool = NULL;
537 static guint cell_area_signals[LAST_SIGNAL] = { 0 };
539 #define PARAM_SPEC_PARAM_ID(pspec) ((pspec)->param_id)
540 #define PARAM_SPEC_SET_PARAM_ID(pspec, id) ((pspec)->param_id = (id))
543 G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkCellArea, gtk_cell_area, G_TYPE_INITIALLY_UNOWNED,
544 G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
545 gtk_cell_area_cell_layout_init));
548 gtk_cell_area_init (GtkCellArea *area)
550 GtkCellAreaPrivate *priv;
552 area->priv = G_TYPE_INSTANCE_GET_PRIVATE (area,
557 priv->cell_info = g_hash_table_new_full (g_direct_hash,
560 (GDestroyNotify)cell_info_free);
562 priv->focus_siblings = g_hash_table_new_full (g_direct_hash,
565 (GDestroyNotify)g_list_free);
567 priv->focus_cell = NULL;
568 priv->edited_cell = NULL;
569 priv->edit_widget = NULL;
571 priv->remove_widget_id = 0;
575 gtk_cell_area_class_init (GtkCellAreaClass *class)
577 GObjectClass *object_class = G_OBJECT_CLASS (class);
580 object_class->dispose = gtk_cell_area_dispose;
581 object_class->finalize = gtk_cell_area_finalize;
582 object_class->get_property = gtk_cell_area_get_property;
583 object_class->set_property = gtk_cell_area_set_property;
587 class->remove = NULL;
588 class->foreach = NULL;
589 class->event = gtk_cell_area_real_event;
590 class->render = NULL;
591 class->apply_attributes = gtk_cell_area_real_apply_attributes;
594 class->create_context = NULL;
595 class->get_request_mode = NULL;
596 class->get_preferred_width = NULL;
597 class->get_preferred_height = NULL;
598 class->get_preferred_height_for_width = gtk_cell_area_real_get_preferred_height_for_width;
599 class->get_preferred_width_for_height = gtk_cell_area_real_get_preferred_width_for_height;
602 class->is_activatable = gtk_cell_area_real_is_activatable;
603 class->activate = gtk_cell_area_real_activate;
608 * GtkCellArea::apply-attributes:
609 * @area: the #GtkCellArea to apply the attributes to
610 * @model: the #GtkTreeModel to apply the attributes from
611 * @iter: the #GtkTreeIter indicating which row to apply the attributes of
612 * @is_expander: whether the view shows children for this row
613 * @is_expanded: whether the view is currently showing the children of this row
615 * This signal is emitted whenever applying attributes to @area from @model
619 cell_area_signals[SIGNAL_APPLY_ATTRIBUTES] =
620 g_signal_new (I_("apply-attributes"),
621 G_OBJECT_CLASS_TYPE (object_class),
623 G_STRUCT_OFFSET (GtkCellAreaClass, apply_attributes),
625 _gtk_marshal_VOID__OBJECT_BOXED_BOOLEAN_BOOLEAN,
633 * GtkCellArea::add-editable:
634 * @area: the #GtkCellArea where editing started
635 * @renderer: the #GtkCellRenderer that started the edited
636 * @editable: the #GtkCellEditable widget to add
637 * @cell_area: the #GtkWidget relative #GdkRectangle coordinates
638 * where @editable should be added
639 * @path: the #GtkTreePath string this edit was initiated for
641 * Indicates that editing has started on @renderer and that @editable
642 * should be added to the owning cell layouting widget at @cell_area.
646 cell_area_signals[SIGNAL_ADD_EDITABLE] =
647 g_signal_new (I_("add-editable"),
648 G_OBJECT_CLASS_TYPE (object_class),
650 0, /* No class closure here */
652 _gtk_marshal_VOID__OBJECT_OBJECT_BOXED_STRING,
654 GTK_TYPE_CELL_RENDERER,
655 GTK_TYPE_CELL_EDITABLE,
661 * GtkCellArea::remove-editable:
662 * @area: the #GtkCellArea where editing finished
663 * @renderer: the #GtkCellRenderer that finished editeding
664 * @editable: the #GtkCellEditable widget to remove
666 * Indicates that editing finished on @renderer and that @editable
667 * should be removed from the owning cell layouting widget.
671 cell_area_signals[SIGNAL_REMOVE_EDITABLE] =
672 g_signal_new (I_("remove-editable"),
673 G_OBJECT_CLASS_TYPE (object_class),
675 0, /* No class closure here */
677 _gtk_marshal_VOID__OBJECT_OBJECT,
679 GTK_TYPE_CELL_RENDERER,
680 GTK_TYPE_CELL_EDITABLE);
683 * GtkCellArea::focus-changed:
684 * @area: the #GtkCellArea where focus changed
685 * @renderer: the #GtkCellRenderer that has focus
686 * @path: the current #GtkTreePath string set for @area
688 * Indicates that focus changed on this @area. This signal
689 * is emitted either as a result of focus handling or event
692 * It's possible that the signal is emitted even if the
693 * currently focused renderer did not change, this is
694 * because focus may change to the same renderer in the
695 * same cell area for a different row of data.
699 cell_area_signals[SIGNAL_FOCUS_CHANGED] =
700 g_signal_new (I_("focus-changed"),
701 G_OBJECT_CLASS_TYPE (object_class),
703 0, /* No class closure here */
705 _gtk_marshal_VOID__OBJECT_STRING,
707 GTK_TYPE_CELL_RENDERER,
712 * GtkCellArea:focus-cell:
714 * The cell in the area that currently has focus
718 g_object_class_install_property (object_class,
723 P_("The cell which currently has focus"),
724 GTK_TYPE_CELL_RENDERER,
725 GTK_PARAM_READWRITE));
728 * GtkCellArea:edited-cell:
730 * The cell in the area that is currently edited
732 * This property is read-only and only changes as
733 * a result of a call gtk_cell_area_activate_cell().
737 g_object_class_install_property (object_class,
742 P_("The cell which is currently being edited"),
743 GTK_TYPE_CELL_RENDERER,
747 * GtkCellArea:edit-widget:
749 * The widget currently editing the edited cell
751 * This property is read-only and only changes as
752 * a result of a call gtk_cell_area_activate_cell().
756 g_object_class_install_property (object_class,
761 P_("The widget currently editing the edited cell"),
762 GTK_TYPE_CELL_RENDERER,
765 /* Pool for Cell Properties */
766 if (!cell_property_pool)
767 cell_property_pool = g_param_spec_pool_new (FALSE);
769 g_type_class_add_private (object_class, sizeof (GtkCellAreaPrivate));
772 /*************************************************************
774 *************************************************************/
776 cell_info_new (GtkCellLayoutDataFunc func,
778 GDestroyNotify destroy)
780 CellInfo *info = g_slice_new0 (CellInfo);
784 info->destroy = destroy;
790 cell_info_free (CellInfo *info)
793 info->destroy (info->data);
795 g_slist_foreach (info->attributes, (GFunc)cell_attribute_free, NULL);
796 g_slist_free (info->attributes);
798 g_slice_free (CellInfo, info);
801 static CellAttribute *
802 cell_attribute_new (GtkCellRenderer *renderer,
803 const gchar *attribute,
808 /* Check if the attribute really exists and point to
809 * the property string installed on the cell renderer
810 * class (dont dup the string)
812 pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (renderer), attribute);
816 CellAttribute *cell_attribute = g_slice_new (CellAttribute);
818 cell_attribute->attribute = pspec->name;
819 cell_attribute->column = column;
821 return cell_attribute;
828 cell_attribute_free (CellAttribute *attribute)
830 g_slice_free (CellAttribute, attribute);
833 /* GCompareFunc for g_slist_find_custom() */
835 cell_attribute_find (CellAttribute *cell_attribute,
836 const gchar *attribute)
838 return g_strcmp0 (cell_attribute->attribute, attribute);
841 /*************************************************************
843 *************************************************************/
845 gtk_cell_area_finalize (GObject *object)
847 GtkCellArea *area = GTK_CELL_AREA (object);
848 GtkCellAreaPrivate *priv = area->priv;
850 /* All cell renderers should already be removed at this point,
851 * just kill our (empty) hash tables here.
853 g_hash_table_destroy (priv->cell_info);
854 g_hash_table_destroy (priv->focus_siblings);
856 g_free (priv->current_path);
858 G_OBJECT_CLASS (gtk_cell_area_parent_class)->finalize (object);
863 gtk_cell_area_dispose (GObject *object)
865 /* This removes every cell renderer that may be added to the GtkCellArea,
866 * subclasses should be breaking references to the GtkCellRenderers
869 gtk_cell_layout_clear (GTK_CELL_LAYOUT (object));
871 /* Remove any ref to a focused/edited cell */
872 gtk_cell_area_set_focus_cell (GTK_CELL_AREA (object), NULL);
873 gtk_cell_area_set_edited_cell (GTK_CELL_AREA (object), NULL);
874 gtk_cell_area_set_edit_widget (GTK_CELL_AREA (object), NULL);
876 G_OBJECT_CLASS (gtk_cell_area_parent_class)->dispose (object);
880 gtk_cell_area_set_property (GObject *object,
885 GtkCellArea *area = GTK_CELL_AREA (object);
889 case PROP_FOCUS_CELL:
890 gtk_cell_area_set_focus_cell (area, (GtkCellRenderer *)g_value_get_object (value));
893 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
899 gtk_cell_area_get_property (GObject *object,
904 GtkCellArea *area = GTK_CELL_AREA (object);
905 GtkCellAreaPrivate *priv = area->priv;
909 case PROP_FOCUS_CELL:
910 g_value_set_object (value, priv->focus_cell);
912 case PROP_EDITED_CELL:
913 g_value_set_object (value, priv->edited_cell);
915 case PROP_EDIT_WIDGET:
916 g_value_set_object (value, priv->edit_widget);
919 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
924 /*************************************************************
926 *************************************************************/
928 gtk_cell_area_real_event (GtkCellArea *area,
929 GtkCellAreaContext *context,
932 const GdkRectangle *cell_area,
933 GtkCellRendererState flags)
935 GtkCellAreaPrivate *priv = area->priv;
936 gboolean retval = FALSE;
938 if (event->type == GDK_KEY_PRESS && (flags & GTK_CELL_RENDERER_FOCUSED) != 0)
940 GdkEventKey *key_event = (GdkEventKey *)event;
942 /* Cancel any edits in progress */
943 if (priv->edited_cell && (key_event->keyval == GDK_KEY_Escape))
945 gtk_cell_area_stop_editing (area, TRUE);
949 else if (event->type == GDK_BUTTON_PRESS)
951 GdkEventButton *button_event = (GdkEventButton *)event;
953 if (button_event->button == 1)
955 GtkCellRenderer *renderer = NULL;
956 GtkCellRenderer *focus_renderer;
957 GdkRectangle alloc_area;
958 gint event_x, event_y;
960 /* We may need some semantics to tell us the offset of the event
961 * window we are handling events for (i.e. GtkTreeView has a bin_window) */
962 event_x = button_event->x;
963 event_y = button_event->y;
965 /* Dont try to search for an event coordinate that is not in the area, that will
966 * trigger a runtime warning.
968 if (event_x >= cell_area->x && event_x <= cell_area->x + cell_area->width &&
969 event_y >= cell_area->y && event_y <= cell_area->y + cell_area->height)
971 gtk_cell_area_get_cell_at_position (area, context, widget,
972 cell_area, event_x, event_y,
977 focus_renderer = gtk_cell_area_get_focus_from_sibling (area, renderer);
979 focus_renderer = renderer;
981 /* If we're already editing, cancel it and set focus */
982 if (gtk_cell_area_get_edited_cell (area))
984 /* XXX Was it really canceled in this case ? */
985 gtk_cell_area_stop_editing (area, TRUE);
986 gtk_cell_area_set_focus_cell (area, focus_renderer);
991 /* If we are activating via a focus sibling,
992 * we need to fetch the right cell area for the real event renderer */
993 if (focus_renderer != renderer)
994 gtk_cell_area_get_cell_allocation (area, context, widget, focus_renderer,
995 cell_area, &alloc_area);
997 gtk_cell_area_set_focus_cell (area, focus_renderer);
998 retval = gtk_cell_area_activate_cell (area, widget, focus_renderer,
999 event, &alloc_area, flags);
1009 apply_cell_attributes (GtkCellRenderer *renderer,
1011 AttributeData *data)
1013 CellAttribute *attribute;
1015 GValue value = { 0, };
1016 gboolean is_expander;
1017 gboolean is_expanded;
1019 g_object_freeze_notify (G_OBJECT (renderer));
1021 /* Whether a row expands or is presently expanded can only be
1022 * provided by the view (as these states can vary across views
1023 * accessing the same model).
1025 g_object_get (renderer, "is-expander", &is_expander, NULL);
1026 if (is_expander != data->is_expander)
1027 g_object_set (renderer, "is-expander", data->is_expander, NULL);
1029 g_object_get (renderer, "is-expanded", &is_expanded, NULL);
1030 if (is_expanded != data->is_expanded)
1031 g_object_set (renderer, "is-expanded", data->is_expanded, NULL);
1033 /* Apply the attributes directly to the renderer */
1034 for (list = info->attributes; list; list = list->next)
1036 attribute = list->data;
1038 gtk_tree_model_get_value (data->model, data->iter, attribute->column, &value);
1039 g_object_set_property (G_OBJECT (renderer), attribute->attribute, &value);
1040 g_value_unset (&value);
1043 /* Call any GtkCellLayoutDataFunc that may have been set by the user
1046 info->func (GTK_CELL_LAYOUT (data->area), renderer,
1047 data->model, data->iter, info->data);
1049 g_object_thaw_notify (G_OBJECT (renderer));
1053 gtk_cell_area_real_apply_attributes (GtkCellArea *area,
1054 GtkTreeModel *tree_model,
1056 gboolean is_expander,
1057 gboolean is_expanded)
1060 GtkCellAreaPrivate *priv;
1066 /* Feed in data needed to apply to every renderer */
1068 data.model = tree_model;
1070 data.is_expander = is_expander;
1071 data.is_expanded = is_expanded;
1073 /* Go over any cells that have attributes or custom GtkCellLayoutDataFuncs and
1074 * apply the data from the treemodel */
1075 g_hash_table_foreach (priv->cell_info, (GHFunc)apply_cell_attributes, &data);
1077 /* Update the currently applied path */
1078 g_free (priv->current_path);
1079 path = gtk_tree_model_get_path (tree_model, iter);
1080 priv->current_path = gtk_tree_path_to_string (path);
1081 gtk_tree_path_free (path);
1085 gtk_cell_area_real_get_preferred_height_for_width (GtkCellArea *area,
1086 GtkCellAreaContext *context,
1089 gint *minimum_height,
1090 gint *natural_height)
1092 /* If the area doesnt do height-for-width, fallback on base preferred height */
1093 GTK_CELL_AREA_GET_CLASS (area)->get_preferred_width (area, context, widget, minimum_height, natural_height);
1097 gtk_cell_area_real_get_preferred_width_for_height (GtkCellArea *area,
1098 GtkCellAreaContext *context,
1101 gint *minimum_width,
1102 gint *natural_width)
1104 /* If the area doesnt do width-for-height, fallback on base preferred width */
1105 GTK_CELL_AREA_GET_CLASS (area)->get_preferred_width (area, context, widget, minimum_width, natural_width);
1109 get_is_activatable (GtkCellRenderer *renderer,
1110 gboolean *activatable)
1113 if (gtk_cell_renderer_is_activatable (renderer))
1114 *activatable = TRUE;
1116 return *activatable;
1120 gtk_cell_area_real_is_activatable (GtkCellArea *area)
1122 gboolean activatable = FALSE;
1124 /* Checks if any renderer can focus for the currently applied
1127 * Subclasses can override this in the case that they are also
1128 * rendering widgets as well as renderers.
1130 gtk_cell_area_foreach (area, (GtkCellCallback)get_is_activatable, &activatable);
1136 gtk_cell_area_real_activate (GtkCellArea *area,
1137 GtkCellAreaContext *context,
1139 const GdkRectangle *cell_area,
1140 GtkCellRendererState flags)
1142 GtkCellAreaPrivate *priv = area->priv;
1143 GdkRectangle background_area;
1144 GtkCellRenderer *activate_cell = NULL;
1146 if (priv->focus_cell)
1147 activate_cell = priv->focus_cell;
1152 /* GtkTreeView sometimes wants to activate a cell when no
1153 * cells are in focus.
1155 cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (area));
1156 for (l = cells; l && !activate_cell; l = l->next)
1158 GtkCellRenderer *renderer = l->data;
1160 if (gtk_cell_renderer_is_activatable (renderer))
1161 activate_cell = renderer;
1163 g_list_free (cells);
1169 /* Get the allocation of the focused cell.
1171 gtk_cell_area_get_cell_allocation (area, context, widget, activate_cell,
1172 cell_area, &background_area);
1174 /* Activate or Edit the cell
1176 * Currently just not sending an event, renderers afaics dont use
1177 * the event argument anyway, worst case is we can synthesize one.
1179 if (gtk_cell_area_activate_cell (area, widget, activate_cell, NULL,
1180 &background_area, flags))
1187 /*************************************************************
1188 * GtkCellLayoutIface *
1189 *************************************************************/
1191 gtk_cell_area_cell_layout_init (GtkCellLayoutIface *iface)
1193 iface->pack_start = gtk_cell_area_pack_default;
1194 iface->pack_end = gtk_cell_area_pack_default;
1195 iface->clear = gtk_cell_area_clear;
1196 iface->add_attribute = gtk_cell_area_add_attribute;
1197 iface->set_cell_data_func = gtk_cell_area_set_cell_data_func;
1198 iface->clear_attributes = gtk_cell_area_clear_attributes;
1199 iface->reorder = gtk_cell_area_reorder;
1200 iface->get_cells = gtk_cell_area_get_cells;
1204 gtk_cell_area_pack_default (GtkCellLayout *cell_layout,
1205 GtkCellRenderer *renderer,
1208 gtk_cell_area_add (GTK_CELL_AREA (cell_layout), renderer);
1212 gtk_cell_area_clear (GtkCellLayout *cell_layout)
1214 GtkCellArea *area = GTK_CELL_AREA (cell_layout);
1216 gtk_cell_layout_get_cells (cell_layout);
1218 for (l = cells; l; l = l->next)
1220 GtkCellRenderer *renderer = l->data;
1221 gtk_cell_area_remove (area, renderer);
1224 g_list_free (cells);
1228 gtk_cell_area_add_attribute (GtkCellLayout *cell_layout,
1229 GtkCellRenderer *renderer,
1230 const gchar *attribute,
1233 gtk_cell_area_attribute_connect (GTK_CELL_AREA (cell_layout),
1234 renderer, attribute, column);
1238 gtk_cell_area_set_cell_data_func (GtkCellLayout *cell_layout,
1239 GtkCellRenderer *renderer,
1240 GtkCellLayoutDataFunc func,
1242 GDestroyNotify destroy)
1244 GtkCellArea *area = GTK_CELL_AREA (cell_layout);
1245 GtkCellAreaPrivate *priv = area->priv;
1248 info = g_hash_table_lookup (priv->cell_info, renderer);
1252 if (info->destroy && info->data)
1253 info->destroy (info->data);
1258 info->data = func_data;
1259 info->destroy = destroy;
1265 info->destroy = NULL;
1270 info = cell_info_new (func, func_data, destroy);
1272 g_hash_table_insert (priv->cell_info, renderer, info);
1277 gtk_cell_area_clear_attributes (GtkCellLayout *cell_layout,
1278 GtkCellRenderer *renderer)
1280 GtkCellArea *area = GTK_CELL_AREA (cell_layout);
1281 GtkCellAreaPrivate *priv = area->priv;
1284 info = g_hash_table_lookup (priv->cell_info, renderer);
1288 g_slist_foreach (info->attributes, (GFunc)cell_attribute_free, NULL);
1289 g_slist_free (info->attributes);
1291 info->attributes = NULL;
1296 gtk_cell_area_reorder (GtkCellLayout *cell_layout,
1297 GtkCellRenderer *cell,
1300 g_warning ("GtkCellLayout::reorder not implemented for `%s'",
1301 g_type_name (G_TYPE_FROM_INSTANCE (cell_layout)));
1305 accum_cells (GtkCellRenderer *renderer,
1308 *accum = g_list_prepend (*accum, renderer);
1314 gtk_cell_area_get_cells (GtkCellLayout *cell_layout)
1316 GList *cells = NULL;
1318 gtk_cell_area_foreach (GTK_CELL_AREA (cell_layout),
1319 (GtkCellCallback)accum_cells,
1322 return g_list_reverse (cells);
1326 /*************************************************************
1328 *************************************************************/
1331 * gtk_cell_area_add:
1332 * @area: a #GtkCellArea
1333 * @renderer: the #GtkCellRenderer to add to @area
1335 * Adds @renderer to @area with the default child cell properties.
1340 gtk_cell_area_add (GtkCellArea *area,
1341 GtkCellRenderer *renderer)
1343 GtkCellAreaClass *class;
1345 g_return_if_fail (GTK_IS_CELL_AREA (area));
1346 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
1348 class = GTK_CELL_AREA_GET_CLASS (area);
1351 class->add (area, renderer);
1353 g_warning ("GtkCellAreaClass::add not implemented for `%s'",
1354 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1358 * gtk_cell_area_remove:
1359 * @area: a #GtkCellArea
1360 * @renderer: the #GtkCellRenderer to remove from @area
1362 * Removes @renderer from @area.
1367 gtk_cell_area_remove (GtkCellArea *area,
1368 GtkCellRenderer *renderer)
1370 GtkCellAreaClass *class;
1371 GtkCellAreaPrivate *priv;
1372 GList *renderers, *l;
1374 g_return_if_fail (GTK_IS_CELL_AREA (area));
1375 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
1377 class = GTK_CELL_AREA_GET_CLASS (area);
1380 /* Remove any custom attributes and custom cell data func here first */
1381 g_hash_table_remove (priv->cell_info, renderer);
1383 /* Remove focus siblings of this renderer */
1384 g_hash_table_remove (priv->focus_siblings, renderer);
1386 /* Remove this renderer from any focus renderer's sibling list */
1387 renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (area));
1389 for (l = renderers; l; l = l->next)
1391 GtkCellRenderer *focus_renderer = l->data;
1393 if (gtk_cell_area_is_focus_sibling (area, focus_renderer, renderer))
1395 gtk_cell_area_remove_focus_sibling (area, focus_renderer, renderer);
1400 g_list_free (renderers);
1403 class->remove (area, renderer);
1405 g_warning ("GtkCellAreaClass::remove not implemented for `%s'",
1406 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1410 get_has_renderer (GtkCellRenderer *renderer,
1411 HasRendererCheck *check)
1413 if (renderer == check->renderer)
1414 check->has_renderer = TRUE;
1416 return check->has_renderer;
1420 * gtk_cell_area_has_renderer:
1421 * @area: a #GtkCellArea
1422 * @renderer: the #GtkCellRenderer to check
1424 * Checks if @area contains @renderer.
1426 * Return value: %TRUE if @renderer is in the @area.
1431 gtk_cell_area_has_renderer (GtkCellArea *area,
1432 GtkCellRenderer *renderer)
1434 HasRendererCheck check = { renderer, FALSE };
1436 g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
1437 g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), FALSE);
1439 gtk_cell_area_foreach (area, (GtkCellCallback)get_has_renderer, &check);
1441 return check.has_renderer;
1445 * gtk_cell_area_foreach:
1446 * @area: a #GtkCellArea
1447 * @callback: the #GtkCellCallback to call
1448 * @callback_data: user provided data pointer
1450 * Calls @callback for every #GtkCellRenderer in @area.
1455 gtk_cell_area_foreach (GtkCellArea *area,
1456 GtkCellCallback callback,
1457 gpointer callback_data)
1459 GtkCellAreaClass *class;
1461 g_return_if_fail (GTK_IS_CELL_AREA (area));
1462 g_return_if_fail (callback != NULL);
1464 class = GTK_CELL_AREA_GET_CLASS (area);
1467 class->foreach (area, callback, callback_data);
1469 g_warning ("GtkCellAreaClass::foreach not implemented for `%s'",
1470 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1474 * gtk_cell_area_foreach_alloc:
1475 * @area: a #GtkCellArea
1476 * @context: the #GtkCellAreaContext for this row of data.
1477 * @widget: the #GtkWidget that @area is rendering to
1478 * @cell_area: the @widget relative coordinates and size for @area
1479 * @callback: the #GtkCellAllocCallback to call
1480 * @callback_data: user provided data pointer
1482 * Calls @callback for every #GtkCellRenderer in @area with the
1483 * allocated rectangle inside @cell_area.
1488 gtk_cell_area_foreach_alloc (GtkCellArea *area,
1489 GtkCellAreaContext *context,
1491 const GdkRectangle *cell_area,
1492 GtkCellAllocCallback callback,
1493 gpointer callback_data)
1495 GtkCellAreaClass *class;
1497 g_return_if_fail (GTK_IS_CELL_AREA (area));
1498 g_return_if_fail (GTK_IS_CELL_AREA_CONTEXT (context));
1499 g_return_if_fail (GTK_IS_WIDGET (widget));
1500 g_return_if_fail (cell_area != NULL);
1501 g_return_if_fail (callback != NULL);
1503 class = GTK_CELL_AREA_GET_CLASS (area);
1505 if (class->foreach_alloc)
1506 class->foreach_alloc (area, context, widget, cell_area, callback, callback_data);
1508 g_warning ("GtkCellAreaClass::foreach_alloc not implemented for `%s'",
1509 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1513 * gtk_cell_area_event:
1514 * @area: a #GtkCellArea
1515 * @context: the #GtkCellAreaContext for this row of data.
1516 * @widget: the #GtkWidget that @area is rendering to
1517 * @event: the #GdkEvent to handle
1518 * @cell_area: the @widget relative coordinates for @area
1519 * @flags: the #GtkCellRendererState for @area in this row.
1521 * Delegates event handling to a #GtkCellArea.
1523 * Return value: %TRUE if the event was handled by @area.
1528 gtk_cell_area_event (GtkCellArea *area,
1529 GtkCellAreaContext *context,
1532 const GdkRectangle *cell_area,
1533 GtkCellRendererState flags)
1535 GtkCellAreaClass *class;
1537 g_return_val_if_fail (GTK_IS_CELL_AREA (area), 0);
1538 g_return_val_if_fail (GTK_IS_CELL_AREA_CONTEXT (context), 0);
1539 g_return_val_if_fail (GTK_IS_WIDGET (widget), 0);
1540 g_return_val_if_fail (event != NULL, 0);
1541 g_return_val_if_fail (cell_area != NULL, 0);
1543 class = GTK_CELL_AREA_GET_CLASS (area);
1546 return class->event (area, context, widget, event, cell_area, flags);
1548 g_warning ("GtkCellAreaClass::event not implemented for `%s'",
1549 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1554 * gtk_cell_area_render:
1555 * @area: a #GtkCellArea
1556 * @context: the #GtkCellAreaContext for this row of data.
1557 * @widget: the #GtkWidget that @area is rendering to
1558 * @cr: the #cairo_t to render with
1559 * @background_area: the @widget relative coordinates for @area's background
1560 * @cell_area: the @widget relative coordinates for @area
1561 * @flags: the #GtkCellRendererState for @area in this row.
1562 * @paint_focus: whether @area should paint focus on focused cells for focused rows or not.
1564 * Renders @area's cells according to @area's layout onto @widget at
1565 * the given coordinates.
1570 gtk_cell_area_render (GtkCellArea *area,
1571 GtkCellAreaContext *context,
1574 const GdkRectangle *background_area,
1575 const GdkRectangle *cell_area,
1576 GtkCellRendererState flags,
1577 gboolean paint_focus)
1579 GtkCellAreaClass *class;
1581 g_return_if_fail (GTK_IS_CELL_AREA (area));
1582 g_return_if_fail (GTK_IS_CELL_AREA_CONTEXT (context));
1583 g_return_if_fail (GTK_IS_WIDGET (widget));
1584 g_return_if_fail (cr != NULL);
1585 g_return_if_fail (background_area != NULL);
1586 g_return_if_fail (cell_area != NULL);
1588 class = GTK_CELL_AREA_GET_CLASS (area);
1591 class->render (area, context, widget, cr, background_area, cell_area, flags, paint_focus);
1593 g_warning ("GtkCellAreaClass::render not implemented for `%s'",
1594 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1598 * gtk_cell_area_set_style_detail:
1599 * @area: a #GtkCellArea
1600 * @detail: the #GtkStyle detail string to set
1602 * Sets the detail string used in any gtk_paint_*() functions
1608 gtk_cell_area_set_style_detail (GtkCellArea *area,
1609 const gchar *detail)
1611 GtkCellAreaPrivate *priv;
1613 g_return_if_fail (GTK_IS_CELL_AREA (area));
1617 if (g_strcmp0 (priv->style_detail, detail) != 0)
1619 g_free (priv->style_detail);
1620 priv->style_detail = g_strdup (detail);
1625 * gtk_cell_area_get_style_detail:
1626 * @area: a #GtkCellArea
1628 * Gets the detail string used in any gtk_paint_*() functions
1631 * Return value: the detail string, the string belongs to the area and should not be freed.
1635 G_CONST_RETURN gchar *
1636 gtk_cell_area_get_style_detail (GtkCellArea *area)
1638 GtkCellAreaPrivate *priv;
1640 g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
1644 return priv->style_detail;
1648 get_cell_allocation (GtkCellRenderer *renderer,
1649 const GdkRectangle *cell_area,
1650 RendererAllocationData *data)
1652 if (data->renderer == renderer)
1653 data->allocation = *cell_area;
1655 return (data->renderer == renderer);
1659 * gtk_cell_area_get_cell_allocation:
1660 * @area: a #GtkCellArea
1661 * @context: the #GtkCellAreaContext used to hold sizes for @area.
1662 * @widget: the #GtkWidget that @area is rendering on
1663 * @renderer: the #GtkCellRenderer to get the allocation for
1664 * @cell_area: the whole allocated area for @area in @widget
1666 * @allocation: (out): where to store the allocation for @renderer
1668 * Derives the allocation of @renderer inside @area if @area
1669 * were to be renderered in @cell_area.
1674 gtk_cell_area_get_cell_allocation (GtkCellArea *area,
1675 GtkCellAreaContext *context,
1677 GtkCellRenderer *renderer,
1678 const GdkRectangle *cell_area,
1679 GdkRectangle *allocation)
1681 RendererAllocationData data = { renderer, { 0, } };
1683 g_return_if_fail (GTK_IS_CELL_AREA (area));
1684 g_return_if_fail (GTK_IS_CELL_AREA_CONTEXT (context));
1685 g_return_if_fail (GTK_IS_WIDGET (widget));
1686 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
1687 g_return_if_fail (cell_area != NULL);
1688 g_return_if_fail (allocation != NULL);
1690 gtk_cell_area_foreach_alloc (area, context, widget, cell_area,
1691 (GtkCellAllocCallback)get_cell_allocation, &data);
1693 *allocation = data.allocation;
1697 get_cell_by_position (GtkCellRenderer *renderer,
1698 const GdkRectangle *cell_area,
1699 CellByPositionData *data)
1701 if (data->x >= cell_area->x && data->x < cell_area->x + cell_area->width &&
1702 data->y >= cell_area->y && data->y < cell_area->y + cell_area->height)
1704 data->renderer = renderer;
1705 data->cell_area = *cell_area;
1708 return (data->renderer != NULL);
1712 * gtk_cell_area_get_cell_at_position:
1713 * @area: a #GtkCellArea
1714 * @context: the #GtkCellAreaContext used to hold sizes for @area.
1715 * @widget: the #GtkWidget that @area is rendering on
1716 * @cell_area: the whole allocated area for @area in @widget
1718 * @x: the x position
1719 * @y: the y position
1720 * @alloc_area: (out) (allow-none): where to store the inner allocated area of the
1721 * returned cell renderer, or %NULL.
1723 * Gets the #GtkCellRenderer at @x and @y coordinates inside @area and optionally
1724 * returns the full cell allocation for it inside @cell_area.
1726 * Returns: the #GtkCellRenderer at @x and @y.
1731 gtk_cell_area_get_cell_at_position (GtkCellArea *area,
1732 GtkCellAreaContext *context,
1734 const GdkRectangle *cell_area,
1737 GdkRectangle *alloc_area)
1739 CellByPositionData data = { x, y, NULL, { 0, } };
1741 g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
1742 g_return_val_if_fail (GTK_IS_CELL_AREA_CONTEXT (context), NULL);
1743 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
1744 g_return_val_if_fail (cell_area != NULL, NULL);
1745 g_return_val_if_fail (x >= cell_area->x && x <= cell_area->x + cell_area->width, NULL);
1746 g_return_val_if_fail (y >= cell_area->y && y <= cell_area->y + cell_area->height, NULL);
1748 gtk_cell_area_foreach_alloc (area, context, widget, cell_area,
1749 (GtkCellAllocCallback)get_cell_by_position, &data);
1752 *alloc_area = data.cell_area;
1754 return data.renderer;
1758 /*************************************************************
1760 *************************************************************/
1762 * gtk_cell_area_create_context:
1763 * @area: a #GtkCellArea
1765 * Creates a #GtkCellAreaContext to be used with @area for
1766 * all purposes. #GtkCellAreaContext stores geometry information
1767 * for rows for which it was operated on, it is important to use
1768 * the same context for the same row of data at all times (i.e.
1769 * one should render and handle events with the same #GtkCellAreaContext
1770 * which was used to request the size of those rows of data).
1772 * Return value: (transfer full): a newly created #GtkCellAreaContext which can be used with @area.
1776 GtkCellAreaContext *
1777 gtk_cell_area_create_context (GtkCellArea *area)
1779 GtkCellAreaClass *class;
1781 g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
1783 class = GTK_CELL_AREA_GET_CLASS (area);
1785 if (class->create_context)
1786 return class->create_context (area);
1788 g_warning ("GtkCellAreaClass::create_context not implemented for `%s'",
1789 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1796 * gtk_cell_area_get_request_mode:
1797 * @area: a #GtkCellArea
1799 * Gets whether the area prefers a height-for-width layout
1800 * or a width-for-height layout.
1802 * Return value: The #GtkSizeRequestMode preferred by @area.
1807 gtk_cell_area_get_request_mode (GtkCellArea *area)
1809 GtkCellAreaClass *class;
1811 g_return_val_if_fail (GTK_IS_CELL_AREA (area),
1812 GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH);
1814 class = GTK_CELL_AREA_GET_CLASS (area);
1816 if (class->get_request_mode)
1817 return class->get_request_mode (area);
1819 g_warning ("GtkCellAreaClass::get_request_mode not implemented for `%s'",
1820 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1822 return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
1826 * gtk_cell_area_get_preferred_width:
1827 * @area: a #GtkCellArea
1828 * @context: the #GtkCellAreaContext to perform this request with
1829 * @widget: the #GtkWidget where @area will be rendering
1830 * @minimum_width: (out) (allow-none): location to store the minimum width, or %NULL
1831 * @natural_width: (out) (allow-none): location to store the natural width, or %NULL
1833 * Retrieves a cell area's initial minimum and natural width.
1835 * @area will store some geometrical information in @context along the way,
1836 * when requesting sizes over an arbitrary number of rows, its not important
1837 * to check the @minimum_width and @natural_width of this call but rather to
1838 * consult gtk_cell_area_context_get_preferred_width() after a series of
1844 gtk_cell_area_get_preferred_width (GtkCellArea *area,
1845 GtkCellAreaContext *context,
1847 gint *minimum_width,
1848 gint *natural_width)
1850 GtkCellAreaClass *class;
1852 g_return_if_fail (GTK_IS_CELL_AREA (area));
1853 g_return_if_fail (GTK_IS_WIDGET (widget));
1855 class = GTK_CELL_AREA_GET_CLASS (area);
1857 if (class->get_preferred_width)
1858 class->get_preferred_width (area, context, widget, minimum_width, natural_width);
1860 g_warning ("GtkCellAreaClass::get_preferred_width not implemented for `%s'",
1861 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1865 * gtk_cell_area_get_preferred_height_for_width:
1866 * @area: a #GtkCellArea
1867 * @context: the #GtkCellAreaContext which has already been requested for widths.
1868 * @widget: the #GtkWidget where @area will be rendering
1869 * @width: the width for which to check the height of this area
1870 * @minimum_height: (out) (allow-none): location to store the minimum height, or %NULL
1871 * @natural_height: (out) (allow-none): location to store the natural height, or %NULL
1873 * Retrieves a cell area's minimum and natural height if it would be given
1874 * the specified @width.
1876 * @area stores some geometrical information in @context along the way
1877 * while calling gtk_cell_area_get_preferred_width(), it's important to
1878 * perform a series of gtk_cell_area_get_preferred_width() requests with
1879 * @context first and then call gtk_cell_area_get_preferred_height_for_width()
1880 * on each cell area individually to get the height for width of each
1881 * fully requested row.
1883 * If at some point, the width of a single row changes, it should be
1884 * requested with gtk_cell_area_get_preferred_width() again and then
1885 * the full width of the requested rows checked again with
1886 * gtk_cell_area_context_get_preferred_width().
1891 gtk_cell_area_get_preferred_height_for_width (GtkCellArea *area,
1892 GtkCellAreaContext *context,
1895 gint *minimum_height,
1896 gint *natural_height)
1898 GtkCellAreaClass *class;
1900 g_return_if_fail (GTK_IS_CELL_AREA (area));
1901 g_return_if_fail (GTK_IS_WIDGET (widget));
1903 class = GTK_CELL_AREA_GET_CLASS (area);
1904 class->get_preferred_height_for_width (area, context, widget, width, minimum_height, natural_height);
1909 * gtk_cell_area_get_preferred_height:
1910 * @area: a #GtkCellArea
1911 * @context: the #GtkCellAreaContext to perform this request with
1912 * @widget: the #GtkWidget where @area will be rendering
1913 * @minimum_height: (out) (allow-none): location to store the minimum height, or %NULL
1914 * @natural_height: (out) (allow-none): location to store the natural height, or %NULL
1916 * Retrieves a cell area's initial minimum and natural height.
1918 * @area will store some geometrical information in @context along the way,
1919 * when requesting sizes over an arbitrary number of rows, its not important
1920 * to check the @minimum_height and @natural_height of this call but rather to
1921 * consult gtk_cell_area_context_get_preferred_height() after a series of
1927 gtk_cell_area_get_preferred_height (GtkCellArea *area,
1928 GtkCellAreaContext *context,
1930 gint *minimum_height,
1931 gint *natural_height)
1933 GtkCellAreaClass *class;
1935 g_return_if_fail (GTK_IS_CELL_AREA (area));
1936 g_return_if_fail (GTK_IS_WIDGET (widget));
1938 class = GTK_CELL_AREA_GET_CLASS (area);
1940 if (class->get_preferred_height)
1941 class->get_preferred_height (area, context, widget, minimum_height, natural_height);
1943 g_warning ("GtkCellAreaClass::get_preferred_height not implemented for `%s'",
1944 g_type_name (G_TYPE_FROM_INSTANCE (area)));
1948 * gtk_cell_area_get_preferred_width_for_height:
1949 * @area: a #GtkCellArea
1950 * @context: the #GtkCellAreaContext which has already been requested for widths.
1951 * @widget: the #GtkWidget where @area will be rendering
1952 * @height: the height for which to check the width of this area
1953 * @minimum_width: (out) (allow-none): location to store the minimum width, or %NULL
1954 * @natural_width: (out) (allow-none): location to store the natural width, or %NULL
1956 * Retrieves a cell area's minimum and natural width if it would be given
1957 * the specified @height.
1959 * @area stores some geometrical information in @context along the way
1960 * while calling gtk_cell_area_get_preferred_height(), it's important to
1961 * perform a series of gtk_cell_area_get_preferred_height() requests with
1962 * @context first and then call gtk_cell_area_get_preferred_width_for_height()
1963 * on each cell area individually to get the height for width of each
1964 * fully requested row.
1966 * If at some point, the height of a single row changes, it should be
1967 * requested with gtk_cell_area_get_preferred_height() again and then
1968 * the full height of the requested rows checked again with
1969 * gtk_cell_area_context_get_preferred_height().
1974 gtk_cell_area_get_preferred_width_for_height (GtkCellArea *area,
1975 GtkCellAreaContext *context,
1978 gint *minimum_width,
1979 gint *natural_width)
1981 GtkCellAreaClass *class;
1983 g_return_if_fail (GTK_IS_CELL_AREA (area));
1984 g_return_if_fail (GTK_IS_WIDGET (widget));
1986 class = GTK_CELL_AREA_GET_CLASS (area);
1987 class->get_preferred_width_for_height (area, context, widget, height, minimum_width, natural_width);
1990 /*************************************************************
1992 *************************************************************/
1995 * gtk_cell_area_attribute_connect:
1996 * @area: a #GtkCellArea
1997 * @renderer: the #GtkCellRenderer to connect an attribute for
1998 * @attribute: the attribute name
1999 * @column: the #GtkTreeModel column to fetch attribute values from
2001 * Connects an @attribute to apply values from @column for the
2002 * #GtkTreeModel in use.
2007 gtk_cell_area_attribute_connect (GtkCellArea *area,
2008 GtkCellRenderer *renderer,
2009 const gchar *attribute,
2012 GtkCellAreaPrivate *priv;
2014 CellAttribute *cell_attribute;
2016 g_return_if_fail (GTK_IS_CELL_AREA (area));
2017 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2018 g_return_if_fail (attribute != NULL);
2019 g_return_if_fail (gtk_cell_area_has_renderer (area, renderer));
2022 info = g_hash_table_lookup (priv->cell_info, renderer);
2026 info = cell_info_new (NULL, NULL, NULL);
2028 g_hash_table_insert (priv->cell_info, renderer, info);
2034 /* Check we are not adding the same attribute twice */
2035 if ((node = g_slist_find_custom (info->attributes, attribute,
2036 (GCompareFunc)cell_attribute_find)) != NULL)
2038 cell_attribute = node->data;
2040 g_warning ("Cannot connect attribute `%s' for cell renderer class `%s' "
2041 "since `%s' is already attributed to column %d",
2043 g_type_name (G_TYPE_FROM_INSTANCE (area)),
2044 attribute, cell_attribute->column);
2049 cell_attribute = cell_attribute_new (renderer, attribute, column);
2051 if (!cell_attribute)
2053 g_warning ("Cannot connect attribute `%s' for cell renderer class `%s' "
2054 "since attribute does not exist",
2056 g_type_name (G_TYPE_FROM_INSTANCE (area)));
2060 info->attributes = g_slist_prepend (info->attributes, cell_attribute);
2064 * gtk_cell_area_attribute_disconnect:
2065 * @area: a #GtkCellArea
2066 * @renderer: the #GtkCellRenderer to disconnect an attribute for
2067 * @attribute: the attribute name
2069 * Disconnects @attribute for the @renderer in @area so that
2070 * attribute will no longer be updated with values from the
2076 gtk_cell_area_attribute_disconnect (GtkCellArea *area,
2077 GtkCellRenderer *renderer,
2078 const gchar *attribute)
2080 GtkCellAreaPrivate *priv;
2082 CellAttribute *cell_attribute;
2085 g_return_if_fail (GTK_IS_CELL_AREA (area));
2086 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2087 g_return_if_fail (attribute != NULL);
2088 g_return_if_fail (gtk_cell_area_has_renderer (area, renderer));
2091 info = g_hash_table_lookup (priv->cell_info, renderer);
2095 node = g_slist_find_custom (info->attributes, attribute,
2096 (GCompareFunc)cell_attribute_find);
2099 cell_attribute = node->data;
2101 cell_attribute_free (cell_attribute);
2103 info->attributes = g_slist_delete_link (info->attributes, node);
2109 * gtk_cell_area_apply_attributes
2110 * @area: a #GtkCellArea
2111 * @tree_model: the #GtkTreeModel to pull values from
2112 * @iter: the #GtkTreeIter in @tree_model to apply values for
2113 * @is_expander: whether @iter has children
2114 * @is_expanded: whether @iter is expanded in the view and
2115 * children are visible
2117 * Applies any connected attributes to the renderers in
2118 * @area by pulling the values from @tree_model.
2123 gtk_cell_area_apply_attributes (GtkCellArea *area,
2124 GtkTreeModel *tree_model,
2126 gboolean is_expander,
2127 gboolean is_expanded)
2129 g_return_if_fail (GTK_IS_CELL_AREA (area));
2130 g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
2131 g_return_if_fail (iter != NULL);
2133 g_signal_emit (area, cell_area_signals[SIGNAL_APPLY_ATTRIBUTES], 0,
2134 tree_model, iter, is_expander, is_expanded);
2138 * gtk_cell_area_get_current_path_string:
2139 * @area: a #GtkCellArea
2141 * Gets the current #GtkTreePath string for the currently
2142 * applied #GtkTreeIter, this is implicitly updated when
2143 * gtk_cell_area_apply_attributes() is called and can be
2144 * used to interact with renderers from #GtkCellArea
2147 * Return value: The current #GtkTreePath string for the current
2148 * attributes applied to @area. This string belongs to the area and
2149 * should not be freed.
2153 G_CONST_RETURN gchar *
2154 gtk_cell_area_get_current_path_string (GtkCellArea *area)
2156 GtkCellAreaPrivate *priv;
2158 g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
2162 return priv->current_path;
2166 /*************************************************************
2167 * API: Cell Properties *
2168 *************************************************************/
2170 * gtk_cell_area_class_install_cell_property:
2171 * @aclass: a #GtkCellAreaClass
2172 * @property_id: the id for the property
2173 * @pspec: the #GParamSpec for the property
2175 * Installs a cell property on a cell area class.
2180 gtk_cell_area_class_install_cell_property (GtkCellAreaClass *aclass,
2184 g_return_if_fail (GTK_IS_CELL_AREA_CLASS (aclass));
2185 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
2186 if (pspec->flags & G_PARAM_WRITABLE)
2187 g_return_if_fail (aclass->set_cell_property != NULL);
2188 if (pspec->flags & G_PARAM_READABLE)
2189 g_return_if_fail (aclass->get_cell_property != NULL);
2190 g_return_if_fail (property_id > 0);
2191 g_return_if_fail (PARAM_SPEC_PARAM_ID (pspec) == 0); /* paranoid */
2192 g_return_if_fail ((pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY)) == 0);
2194 if (g_param_spec_pool_lookup (cell_property_pool, pspec->name, G_OBJECT_CLASS_TYPE (aclass), TRUE))
2196 g_warning (G_STRLOC ": class `%s' already contains a cell property named `%s'",
2197 G_OBJECT_CLASS_NAME (aclass), pspec->name);
2200 g_param_spec_ref (pspec);
2201 g_param_spec_sink (pspec);
2202 PARAM_SPEC_SET_PARAM_ID (pspec, property_id);
2203 g_param_spec_pool_insert (cell_property_pool, pspec, G_OBJECT_CLASS_TYPE (aclass));
2207 * gtk_cell_area_class_find_cell_property:
2208 * @aclass: a #GtkCellAreaClass
2209 * @property_name: the name of the child property to find
2211 * Finds a cell property of a cell area class by name.
2213 * Return value: (allow-none): the #GParamSpec of the child property or %NULL if @aclass has no
2214 * child property with that name.
2219 gtk_cell_area_class_find_cell_property (GtkCellAreaClass *aclass,
2220 const gchar *property_name)
2222 g_return_val_if_fail (GTK_IS_CELL_AREA_CLASS (aclass), NULL);
2223 g_return_val_if_fail (property_name != NULL, NULL);
2225 return g_param_spec_pool_lookup (cell_property_pool,
2227 G_OBJECT_CLASS_TYPE (aclass),
2232 * gtk_cell_area_class_list_cell_properties:
2233 * @aclass: a #GtkCellAreaClass
2234 * @n_properties: location to return the number of cell properties found
2236 * Returns all cell properties of a cell area class.
2238 * Return value: a newly allocated %NULL-terminated array of #GParamSpec*.
2239 * The array must be freed with g_free().
2244 gtk_cell_area_class_list_cell_properties (GtkCellAreaClass *aclass,
2245 guint *n_properties)
2247 GParamSpec **pspecs;
2250 g_return_val_if_fail (GTK_IS_CELL_AREA_CLASS (aclass), NULL);
2252 pspecs = g_param_spec_pool_list (cell_property_pool,
2253 G_OBJECT_CLASS_TYPE (aclass),
2262 * gtk_cell_area_add_with_properties:
2263 * @area: a #GtkCellArea
2264 * @renderer: a #GtkCellRenderer to be placed inside @area
2265 * @first_prop_name: the name of the first cell property to set
2266 * @Varargs: a %NULL-terminated list of property names and values, starting
2267 * with @first_prop_name
2269 * Adds @renderer to @area, setting cell properties at the same time.
2270 * See gtk_cell_area_add() and gtk_cell_area_child_set() for more details.
2275 gtk_cell_area_add_with_properties (GtkCellArea *area,
2276 GtkCellRenderer *renderer,
2277 const gchar *first_prop_name,
2280 GtkCellAreaClass *class;
2282 g_return_if_fail (GTK_IS_CELL_AREA (area));
2283 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2285 class = GTK_CELL_AREA_GET_CLASS (area);
2291 class->add (area, renderer);
2293 va_start (var_args, first_prop_name);
2294 gtk_cell_area_cell_set_valist (area, renderer, first_prop_name, var_args);
2298 g_warning ("GtkCellAreaClass::add not implemented for `%s'",
2299 g_type_name (G_TYPE_FROM_INSTANCE (area)));
2303 * gtk_cell_area_cell_set:
2304 * @area: a #GtkCellArea
2305 * @renderer: a #GtkCellRenderer which is a cell inside @area
2306 * @first_prop_name: the name of the first cell property to set
2307 * @Varargs: a %NULL-terminated list of property names and values, starting
2308 * with @first_prop_name
2310 * Sets one or more cell properties for @cell in @area.
2315 gtk_cell_area_cell_set (GtkCellArea *area,
2316 GtkCellRenderer *renderer,
2317 const gchar *first_prop_name,
2322 g_return_if_fail (GTK_IS_CELL_AREA (area));
2323 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2325 va_start (var_args, first_prop_name);
2326 gtk_cell_area_cell_set_valist (area, renderer, first_prop_name, var_args);
2331 * gtk_cell_area_cell_get:
2332 * @area: a #GtkCellArea
2333 * @renderer: a #GtkCellRenderer which is inside @area
2334 * @first_prop_name: the name of the first cell property to get
2335 * @Varargs: return location for the first cell property, followed
2336 * optionally by more name/return location pairs, followed by %NULL
2338 * Gets the values of one or more cell properties for @renderer in @area.
2343 gtk_cell_area_cell_get (GtkCellArea *area,
2344 GtkCellRenderer *renderer,
2345 const gchar *first_prop_name,
2350 g_return_if_fail (GTK_IS_CELL_AREA (area));
2351 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2353 va_start (var_args, first_prop_name);
2354 gtk_cell_area_cell_get_valist (area, renderer, first_prop_name, var_args);
2359 area_get_cell_property (GtkCellArea *area,
2360 GtkCellRenderer *renderer,
2364 GtkCellAreaClass *class = g_type_class_peek (pspec->owner_type);
2366 class->get_cell_property (area, renderer, PARAM_SPEC_PARAM_ID (pspec), value, pspec);
2370 area_set_cell_property (GtkCellArea *area,
2371 GtkCellRenderer *renderer,
2373 const GValue *value)
2375 GValue tmp_value = { 0, };
2376 GtkCellAreaClass *class = g_type_class_peek (pspec->owner_type);
2378 /* provide a copy to work from, convert (if necessary) and validate */
2379 g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
2380 if (!g_value_transform (value, &tmp_value))
2381 g_warning ("unable to set cell property `%s' of type `%s' from value of type `%s'",
2383 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
2384 G_VALUE_TYPE_NAME (value));
2385 else if (g_param_value_validate (pspec, &tmp_value) && !(pspec->flags & G_PARAM_LAX_VALIDATION))
2387 gchar *contents = g_strdup_value_contents (value);
2389 g_warning ("value \"%s\" of type `%s' is invalid for property `%s' of type `%s'",
2391 G_VALUE_TYPE_NAME (value),
2393 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
2398 class->set_cell_property (area, renderer, PARAM_SPEC_PARAM_ID (pspec), &tmp_value, pspec);
2400 g_value_unset (&tmp_value);
2404 * gtk_cell_area_cell_set_valist:
2405 * @area: a #GtkCellArea
2406 * @renderer: a #GtkCellRenderer which inside @area
2407 * @first_property_name: the name of the first cell property to set
2408 * @var_args: a %NULL-terminated list of property names and values, starting
2409 * with @first_prop_name
2411 * Sets one or more cell properties for @renderer in @area.
2416 gtk_cell_area_cell_set_valist (GtkCellArea *area,
2417 GtkCellRenderer *renderer,
2418 const gchar *first_property_name,
2423 g_return_if_fail (GTK_IS_CELL_AREA (area));
2424 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2426 name = first_property_name;
2429 GValue value = { 0, };
2430 gchar *error = NULL;
2432 g_param_spec_pool_lookup (cell_property_pool, name,
2433 G_OBJECT_TYPE (area), TRUE);
2436 g_warning ("%s: cell area class `%s' has no cell property named `%s'",
2437 G_STRLOC, G_OBJECT_TYPE_NAME (area), name);
2440 if (!(pspec->flags & G_PARAM_WRITABLE))
2442 g_warning ("%s: cell property `%s' of cell area class `%s' is not writable",
2443 G_STRLOC, pspec->name, G_OBJECT_TYPE_NAME (area));
2447 g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
2448 G_VALUE_COLLECT (&value, var_args, 0, &error);
2451 g_warning ("%s: %s", G_STRLOC, error);
2454 /* we purposely leak the value here, it might not be
2455 * in a sane state if an error condition occoured
2459 area_set_cell_property (area, renderer, pspec, &value);
2460 g_value_unset (&value);
2461 name = va_arg (var_args, gchar*);
2466 * gtk_cell_area_cell_get_valist:
2467 * @area: a #GtkCellArea
2468 * @renderer: a #GtkCellRenderer inside @area
2469 * @first_property_name: the name of the first property to get
2470 * @var_args: return location for the first property, followed
2471 * optionally by more name/return location pairs, followed by %NULL
2473 * Gets the values of one or more cell properties for @renderer in @area.
2478 gtk_cell_area_cell_get_valist (GtkCellArea *area,
2479 GtkCellRenderer *renderer,
2480 const gchar *first_property_name,
2485 g_return_if_fail (GTK_IS_CELL_AREA (area));
2486 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2488 name = first_property_name;
2491 GValue value = { 0, };
2495 pspec = g_param_spec_pool_lookup (cell_property_pool, name,
2496 G_OBJECT_TYPE (area), TRUE);
2499 g_warning ("%s: cell area class `%s' has no cell property named `%s'",
2500 G_STRLOC, G_OBJECT_TYPE_NAME (area), name);
2503 if (!(pspec->flags & G_PARAM_READABLE))
2505 g_warning ("%s: cell property `%s' of cell area class `%s' is not readable",
2506 G_STRLOC, pspec->name, G_OBJECT_TYPE_NAME (area));
2510 g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
2511 area_get_cell_property (area, renderer, pspec, &value);
2512 G_VALUE_LCOPY (&value, var_args, 0, &error);
2515 g_warning ("%s: %s", G_STRLOC, error);
2517 g_value_unset (&value);
2520 g_value_unset (&value);
2521 name = va_arg (var_args, gchar*);
2526 * gtk_cell_area_cell_set_property:
2527 * @area: a #GtkCellArea
2528 * @renderer: a #GtkCellRenderer inside @area
2529 * @property_name: the name of the cell property to set
2530 * @value: the value to set the cell property to
2532 * Sets a cell property for @renderer in @area.
2537 gtk_cell_area_cell_set_property (GtkCellArea *area,
2538 GtkCellRenderer *renderer,
2539 const gchar *property_name,
2540 const GValue *value)
2544 g_return_if_fail (GTK_IS_CELL_AREA (area));
2545 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2546 g_return_if_fail (property_name != NULL);
2547 g_return_if_fail (G_IS_VALUE (value));
2549 pspec = g_param_spec_pool_lookup (cell_property_pool, property_name,
2550 G_OBJECT_TYPE (area), TRUE);
2552 g_warning ("%s: cell area class `%s' has no cell property named `%s'",
2553 G_STRLOC, G_OBJECT_TYPE_NAME (area), property_name);
2554 else if (!(pspec->flags & G_PARAM_WRITABLE))
2555 g_warning ("%s: cell property `%s' of cell area class `%s' is not writable",
2556 G_STRLOC, pspec->name, G_OBJECT_TYPE_NAME (area));
2559 area_set_cell_property (area, renderer, pspec, value);
2564 * gtk_cell_area_cell_get_property:
2565 * @area: a #GtkCellArea
2566 * @renderer: a #GtkCellRenderer inside @area
2567 * @property_name: the name of the property to get
2568 * @value: a location to return the value
2570 * Gets the value of a cell property for @renderer in @area.
2575 gtk_cell_area_cell_get_property (GtkCellArea *area,
2576 GtkCellRenderer *renderer,
2577 const gchar *property_name,
2582 g_return_if_fail (GTK_IS_CELL_AREA (area));
2583 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2584 g_return_if_fail (property_name != NULL);
2585 g_return_if_fail (G_IS_VALUE (value));
2587 pspec = g_param_spec_pool_lookup (cell_property_pool, property_name,
2588 G_OBJECT_TYPE (area), TRUE);
2590 g_warning ("%s: cell area class `%s' has no cell property named `%s'",
2591 G_STRLOC, G_OBJECT_TYPE_NAME (area), property_name);
2592 else if (!(pspec->flags & G_PARAM_READABLE))
2593 g_warning ("%s: cell property `%s' of cell area class `%s' is not readable",
2594 G_STRLOC, pspec->name, G_OBJECT_TYPE_NAME (area));
2597 GValue *prop_value, tmp_value = { 0, };
2599 /* auto-conversion of the callers value type
2601 if (G_VALUE_TYPE (value) == G_PARAM_SPEC_VALUE_TYPE (pspec))
2603 g_value_reset (value);
2606 else if (!g_value_type_transformable (G_PARAM_SPEC_VALUE_TYPE (pspec), G_VALUE_TYPE (value)))
2608 g_warning ("can't retrieve cell property `%s' of type `%s' as value of type `%s'",
2610 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
2611 G_VALUE_TYPE_NAME (value));
2616 g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
2617 prop_value = &tmp_value;
2620 area_get_cell_property (area, renderer, pspec, prop_value);
2622 if (prop_value != value)
2624 g_value_transform (prop_value, value);
2625 g_value_unset (&tmp_value);
2630 /*************************************************************
2632 *************************************************************/
2635 * gtk_cell_area_is_activatable:
2636 * @area: a #GtkCellArea
2638 * Returns whether the area can do anything when activated,
2639 * after applying new attributes to @area.
2641 * Return value: whether @area can do anything when activated.
2646 gtk_cell_area_is_activatable (GtkCellArea *area)
2648 g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
2650 return GTK_CELL_AREA_GET_CLASS (area)->is_activatable (area);
2654 * gtk_cell_area_focus:
2655 * @area: a #GtkCellArea
2656 * @direction: the #GtkDirectionType
2658 * This should be called by the @area's owning layout widget
2659 * when focus is to be passed to @area, or moved within @area
2660 * for a given @direction and row data.
2662 * Implementing #GtkCellArea classes should implement this
2663 * method to receive and navigate focus in it's own way particular
2664 * to how it lays out cells.
2666 * Return value: %TRUE if focus remains inside @area as a result of this call.
2671 gtk_cell_area_focus (GtkCellArea *area,
2672 GtkDirectionType direction)
2674 GtkCellAreaClass *class;
2676 g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
2678 class = GTK_CELL_AREA_GET_CLASS (area);
2681 return class->focus (area, direction);
2683 g_warning ("GtkCellAreaClass::focus not implemented for `%s'",
2684 g_type_name (G_TYPE_FROM_INSTANCE (area)));
2690 * gtk_cell_area_activate:
2691 * @area: a #GtkCellArea
2692 * @context: the #GtkCellAreaContext in context with the current row data
2693 * @widget: the #GtkWidget that @area is rendering on
2694 * @cell_area: the size and location of @area relative to @widget's allocation
2695 * @flags: the #GtkCellRendererState flags for @area for this row of data.
2697 * Activates @area, usually by activating the currently focused
2698 * cell, however some subclasses which embed widgets in the area
2699 * can also activate a widget if it currently has the focus.
2701 * Return value: Whether @area was successfully activated.
2706 gtk_cell_area_activate (GtkCellArea *area,
2707 GtkCellAreaContext *context,
2709 const GdkRectangle *cell_area,
2710 GtkCellRendererState flags)
2712 g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
2714 return GTK_CELL_AREA_GET_CLASS (area)->activate (area, context, widget, cell_area, flags);
2719 * gtk_cell_area_set_focus_cell:
2720 * @area: a #GtkCellArea
2721 * @focus_cell: the #GtkCellRenderer to give focus to
2723 * This is generally called from #GtkCellArea implementations
2724 * either gtk_cell_area_grab_focus() or gtk_cell_area_update_focus()
2725 * is called. It's also up to the #GtkCellArea implementation
2726 * to update the focused cell when receiving events from
2727 * gtk_cell_area_event() appropriately.
2732 gtk_cell_area_set_focus_cell (GtkCellArea *area,
2733 GtkCellRenderer *renderer)
2735 GtkCellAreaPrivate *priv;
2737 g_return_if_fail (GTK_IS_CELL_AREA (area));
2738 g_return_if_fail (renderer == NULL || GTK_IS_CELL_RENDERER (renderer));
2742 if (priv->focus_cell != renderer)
2744 if (priv->focus_cell)
2745 g_object_unref (priv->focus_cell);
2747 priv->focus_cell = renderer;
2749 if (priv->focus_cell)
2750 g_object_ref (priv->focus_cell);
2752 g_object_notify (G_OBJECT (area), "focus-cell");
2755 /* Signal that the current focus renderer for this path changed
2756 * (it may be that the focus cell did not change, but the row
2757 * may have changed so we need to signal it) */
2758 g_signal_emit (area, cell_area_signals[SIGNAL_FOCUS_CHANGED], 0,
2759 priv->focus_cell, priv->current_path);
2764 * gtk_cell_area_get_focus_cell:
2765 * @area: a #GtkCellArea
2767 * Retrieves the currently focused cell for @area
2769 * Return value: the currently focused cell in @area.
2774 gtk_cell_area_get_focus_cell (GtkCellArea *area)
2776 GtkCellAreaPrivate *priv;
2778 g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
2782 return priv->focus_cell;
2786 /*************************************************************
2787 * API: Focus Siblings *
2788 *************************************************************/
2791 * gtk_cell_area_add_focus_sibling:
2792 * @area: a #GtkCellArea
2793 * @renderer: the #GtkCellRenderer expected to have focus
2794 * @sibling: the #GtkCellRenderer to add to @renderer's focus area
2796 * Adds @sibling to @renderer's focusable area, focus will be drawn
2797 * around @renderer and all of it's siblings if @renderer can
2798 * focus for a given row.
2800 * Events handled by focus siblings can also activate the given
2801 * focusable @renderer.
2806 gtk_cell_area_add_focus_sibling (GtkCellArea *area,
2807 GtkCellRenderer *renderer,
2808 GtkCellRenderer *sibling)
2810 GtkCellAreaPrivate *priv;
2813 g_return_if_fail (GTK_IS_CELL_AREA (area));
2814 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2815 g_return_if_fail (GTK_IS_CELL_RENDERER (sibling));
2816 g_return_if_fail (renderer != sibling);
2817 g_return_if_fail (gtk_cell_area_has_renderer (area, renderer));
2818 g_return_if_fail (gtk_cell_area_has_renderer (area, sibling));
2819 g_return_if_fail (!gtk_cell_area_is_focus_sibling (area, renderer, sibling));
2821 /* XXX We should also check that sibling is not in any other renderer's sibling
2822 * list already, a renderer can be sibling of only one focusable renderer
2828 siblings = g_hash_table_lookup (priv->focus_siblings, renderer);
2831 siblings = g_list_append (siblings, sibling);
2834 siblings = g_list_append (siblings, sibling);
2835 g_hash_table_insert (priv->focus_siblings, renderer, siblings);
2840 * gtk_cell_area_remove_focus_sibling:
2841 * @area: a #GtkCellArea
2842 * @renderer: the #GtkCellRenderer expected to have focus
2843 * @sibling: the #GtkCellRenderer to remove from @renderer's focus area
2845 * Removes @sibling from @renderer's focus sibling list
2846 * (see gtk_cell_area_add_focus_sibling()).
2851 gtk_cell_area_remove_focus_sibling (GtkCellArea *area,
2852 GtkCellRenderer *renderer,
2853 GtkCellRenderer *sibling)
2855 GtkCellAreaPrivate *priv;
2858 g_return_if_fail (GTK_IS_CELL_AREA (area));
2859 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
2860 g_return_if_fail (GTK_IS_CELL_RENDERER (sibling));
2861 g_return_if_fail (gtk_cell_area_is_focus_sibling (area, renderer, sibling));
2865 siblings = g_hash_table_lookup (priv->focus_siblings, renderer);
2867 siblings = g_list_copy (siblings);
2868 siblings = g_list_remove (siblings, sibling);
2871 g_hash_table_remove (priv->focus_siblings, renderer);
2873 g_hash_table_insert (priv->focus_siblings, renderer, siblings);
2877 * gtk_cell_area_is_focus_sibling:
2878 * @area: a #GtkCellArea
2879 * @renderer: the #GtkCellRenderer expected to have focus
2880 * @sibling: the #GtkCellRenderer to check against @renderer's sibling list
2882 * Returns %TRUE if @sibling is one of @renderer's focus siblings
2883 * (see gtk_cell_area_add_focus_sibling()).
2888 gtk_cell_area_is_focus_sibling (GtkCellArea *area,
2889 GtkCellRenderer *renderer,
2890 GtkCellRenderer *sibling)
2892 GtkCellAreaPrivate *priv;
2893 GList *siblings, *l;
2895 g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
2896 g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), FALSE);
2897 g_return_val_if_fail (GTK_IS_CELL_RENDERER (sibling), FALSE);
2901 siblings = g_hash_table_lookup (priv->focus_siblings, renderer);
2903 for (l = siblings; l; l = l->next)
2905 GtkCellRenderer *a_sibling = l->data;
2907 if (a_sibling == sibling)
2915 * gtk_cell_area_get_focus_siblings:
2916 * @area: a #GtkCellArea
2917 * @renderer: the #GtkCellRenderer expected to have focus
2919 * Gets the focus sibling cell renderers for @renderer.
2921 * Return value: (element-type GtkCellRenderer) (transfer none): A #GList of #GtkCellRenderers.
2922 * The returned list is internal and should not be freed.
2927 gtk_cell_area_get_focus_siblings (GtkCellArea *area,
2928 GtkCellRenderer *renderer)
2930 GtkCellAreaPrivate *priv;
2932 g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
2933 g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), NULL);
2937 return g_hash_table_lookup (priv->focus_siblings, renderer);
2941 * gtk_cell_area_get_focus_from_sibling:
2942 * @area: a #GtkCellArea
2943 * @renderer: the #GtkCellRenderer
2945 * Gets the #GtkCellRenderer which is expected to be focusable
2946 * for which @renderer is, or may be a sibling.
2948 * This is handy for #GtkCellArea subclasses when handling events,
2949 * after determining the renderer at the event location it can
2950 * then chose to activate the focus cell for which the event
2951 * cell may have been a sibling.
2953 * Return value: the #GtkCellRenderer for which @renderer is a sibling, or %NULL.
2958 gtk_cell_area_get_focus_from_sibling (GtkCellArea *area,
2959 GtkCellRenderer *renderer)
2961 GtkCellRenderer *ret_renderer = NULL;
2962 GList *renderers, *l;
2964 g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
2965 g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), NULL);
2967 renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (area));
2969 for (l = renderers; l; l = l->next)
2971 GtkCellRenderer *a_renderer = l->data;
2974 for (list = gtk_cell_area_get_focus_siblings (area, a_renderer);
2975 list; list = list->next)
2977 GtkCellRenderer *sibling_renderer = list->data;
2979 if (sibling_renderer == renderer)
2981 ret_renderer = a_renderer;
2986 g_list_free (renderers);
2988 return ret_renderer;
2991 /*************************************************************
2992 * API: Cell Activation/Editing *
2993 *************************************************************/
2995 gtk_cell_area_add_editable (GtkCellArea *area,
2996 GtkCellRenderer *renderer,
2997 GtkCellEditable *editable,
2998 const GdkRectangle *cell_area)
3000 g_signal_emit (area, cell_area_signals[SIGNAL_ADD_EDITABLE], 0,
3001 renderer, editable, cell_area, area->priv->current_path);
3005 gtk_cell_area_remove_editable (GtkCellArea *area,
3006 GtkCellRenderer *renderer,
3007 GtkCellEditable *editable)
3009 g_signal_emit (area, cell_area_signals[SIGNAL_REMOVE_EDITABLE], 0, renderer, editable);
3013 cell_area_remove_widget_cb (GtkCellEditable *editable,
3016 GtkCellAreaPrivate *priv = area->priv;
3018 g_assert (priv->edit_widget == editable);
3019 g_assert (priv->edited_cell != NULL);
3021 gtk_cell_area_remove_editable (area, priv->edited_cell, priv->edit_widget);
3023 /* Now that we're done with editing the widget and it can be removed,
3024 * remove our references to the widget and disconnect handlers */
3025 gtk_cell_area_set_edited_cell (area, NULL);
3026 gtk_cell_area_set_edit_widget (area, NULL);
3030 gtk_cell_area_set_edited_cell (GtkCellArea *area,
3031 GtkCellRenderer *renderer)
3033 GtkCellAreaPrivate *priv;
3035 g_return_if_fail (GTK_IS_CELL_AREA (area));
3036 g_return_if_fail (renderer == NULL || GTK_IS_CELL_RENDERER (renderer));
3040 if (priv->edited_cell != renderer)
3042 if (priv->edited_cell)
3043 g_object_unref (priv->edited_cell);
3045 priv->edited_cell = renderer;
3047 if (priv->edited_cell)
3048 g_object_ref (priv->edited_cell);
3050 g_object_notify (G_OBJECT (area), "edited-cell");
3055 gtk_cell_area_set_edit_widget (GtkCellArea *area,
3056 GtkCellEditable *editable)
3058 GtkCellAreaPrivate *priv;
3060 g_return_if_fail (GTK_IS_CELL_AREA (area));
3061 g_return_if_fail (editable == NULL || GTK_IS_CELL_EDITABLE (editable));
3065 if (priv->edit_widget != editable)
3067 if (priv->edit_widget)
3069 g_signal_handler_disconnect (priv->edit_widget, priv->remove_widget_id);
3071 g_object_unref (priv->edit_widget);
3074 priv->edit_widget = editable;
3076 if (priv->edit_widget)
3078 priv->remove_widget_id =
3079 g_signal_connect (priv->edit_widget, "remove-widget",
3080 G_CALLBACK (cell_area_remove_widget_cb), area);
3082 g_object_ref (priv->edit_widget);
3085 g_object_notify (G_OBJECT (area), "edit-widget");
3090 * gtk_cell_area_get_edited_cell:
3091 * @area: a #GtkCellArea
3093 * Gets the #GtkCellRenderer in @area that is currently
3096 * Return value: The currently edited #GtkCellRenderer
3101 gtk_cell_area_get_edited_cell (GtkCellArea *area)
3103 GtkCellAreaPrivate *priv;
3105 g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
3109 return priv->edited_cell;
3113 * gtk_cell_area_get_edit_widget:
3114 * @area: a #GtkCellArea
3116 * Gets the #GtkCellEditable widget currently used
3117 * to edit the currently edited cell.
3119 * Return value: The currently active #GtkCellEditable widget
3124 gtk_cell_area_get_edit_widget (GtkCellArea *area)
3126 GtkCellAreaPrivate *priv;
3128 g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
3132 return priv->edit_widget;
3136 * gtk_cell_area_activate_cell:
3137 * @area: a #GtkCellArea
3138 * @widget: the #GtkWidget that @area is rendering onto
3139 * @renderer: the #GtkCellRenderer in @area to activate
3140 * @event: the #GdkEvent for which cell activation should occur
3141 * @cell_area: the #GdkRectangle in @widget relative coordinates
3142 * of @renderer for the current row.
3143 * @flags: the #GtkCellRendererState for @renderer
3145 * This is used by #GtkCellArea subclasses when handling events
3146 * to activate cells, the base #GtkCellArea class activates cells
3147 * for keyboard events for free in it's own GtkCellArea->activate()
3150 * Return value: whether cell activation was successful
3155 gtk_cell_area_activate_cell (GtkCellArea *area,
3157 GtkCellRenderer *renderer,
3159 const GdkRectangle *cell_area,
3160 GtkCellRendererState flags)
3162 GtkCellRendererMode mode;
3163 GtkCellAreaPrivate *priv;
3165 g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
3166 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
3167 g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), FALSE);
3168 g_return_val_if_fail (cell_area != NULL, FALSE);
3172 g_object_get (renderer, "mode", &mode, NULL);
3174 if (mode == GTK_CELL_RENDERER_MODE_ACTIVATABLE)
3176 if (gtk_cell_renderer_activate (renderer,
3184 else if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
3186 GtkCellEditable *editable_widget;
3189 gtk_cell_renderer_start_editing (renderer,
3196 if (editable_widget != NULL)
3198 g_return_val_if_fail (GTK_IS_CELL_EDITABLE (editable_widget), FALSE);
3200 gtk_cell_area_set_edited_cell (area, renderer);
3201 gtk_cell_area_set_edit_widget (area, editable_widget);
3203 /* Signal that editing started so that callers can get
3204 * a handle on the editable_widget */
3205 gtk_cell_area_add_editable (area, priv->focus_cell, editable_widget, cell_area);
3207 /* If the signal was successfully handled start the editing */
3208 if (gtk_widget_get_parent (GTK_WIDGET (editable_widget)))
3210 gtk_cell_editable_start_editing (editable_widget, NULL);
3211 gtk_widget_grab_focus (GTK_WIDGET (editable_widget));
3215 /* Otherwise clear the editing state and fire a warning */
3216 gtk_cell_area_set_edited_cell (area, NULL);
3217 gtk_cell_area_set_edit_widget (area, NULL);
3219 g_warning ("GtkCellArea::add-editable fired in the dark, no cell editing was started.");
3230 * gtk_cell_area_stop_editing:
3231 * @area: a #GtkCellArea
3232 * @canceled: whether editing was canceled.
3234 * Explicitly stops the editing of the currently
3235 * edited cell (see gtk_cell_area_get_edited_cell()).
3237 * If @canceled is %TRUE, the cell renderer will emit
3238 * the ::editing-canceled signal.
3243 gtk_cell_area_stop_editing (GtkCellArea *area,
3246 GtkCellAreaPrivate *priv;
3248 g_return_if_fail (GTK_IS_CELL_AREA (area));
3252 if (priv->edited_cell)
3254 GtkCellEditable *edit_widget = g_object_ref (priv->edit_widget);
3255 GtkCellRenderer *edit_cell = g_object_ref (priv->edited_cell);
3257 /* Stop editing of the cell renderer */
3258 gtk_cell_renderer_stop_editing (priv->edited_cell, canceled);
3260 /* Remove any references to the editable widget */
3261 gtk_cell_area_set_edited_cell (area, NULL);
3262 gtk_cell_area_set_edit_widget (area, NULL);
3264 /* Send the remove-widget signal explicitly (this is done after setting
3265 * the edit cell/widget NULL to avoid feedback)
3267 gtk_cell_area_remove_editable (area, edit_cell, edit_widget);
3268 g_object_unref (edit_cell);
3269 g_object_unref (edit_widget);
3273 /*************************************************************
3274 * API: Convenience for area implementations *
3275 *************************************************************/
3278 * gtk_cell_area_inner_cell_area:
3279 * @area: a #GtkCellArea
3280 * @widget: the #GtkWidget that @area is rendering onto
3281 * @cell_area: the @widget relative coordinates where one of @area's cells
3283 * @inner_area: (out): the return location for the inner cell area
3285 * This is a convenience function for #GtkCellArea implementations
3286 * to get the inner area where a given #GtkCellRenderer will be
3287 * rendered. It removes any padding previously added by gtk_cell_area_request_renderer().
3292 gtk_cell_area_inner_cell_area (GtkCellArea *area,
3294 const GdkRectangle *cell_area,
3295 GdkRectangle *inner_area)
3297 gint focus_line_width;
3299 g_return_if_fail (GTK_IS_CELL_AREA (area));
3300 g_return_if_fail (GTK_IS_WIDGET (widget));
3301 g_return_if_fail (cell_area != NULL);
3302 g_return_if_fail (inner_area != NULL);
3304 gtk_widget_style_get (widget, "focus-line-width", &focus_line_width, NULL);
3306 *inner_area = *cell_area;
3308 inner_area->x += focus_line_width;
3309 inner_area->width -= focus_line_width * 2;
3310 inner_area->y += focus_line_width;
3311 inner_area->height -= focus_line_width * 2;
3315 * gtk_cell_area_request_renderer:
3316 * @area: a #GtkCellArea
3317 * @renderer: the #GtkCellRenderer to request size for
3318 * @orientation: the #GtkOrientation in which to request size
3319 * @widget: the #GtkWidget that @area is rendering onto
3320 * @for_size: the allocation contextual size to request for, or -1 if
3321 * the base request for the orientation is to be returned.
3322 * @minimum_size: (out) (allow-none): location to store the minimum size, or %NULL
3323 * @natural_size: (out) (allow-none): location to store the natural size, or %NULL
3325 * This is a convenience function for #GtkCellArea implementations
3326 * to request size for cell renderers. It's important to use this
3327 * function to request size and then use gtk_cell_area_inner_cell_area()
3328 * at render and event time since this function will add padding
3329 * around the cell for focus painting.
3334 gtk_cell_area_request_renderer (GtkCellArea *area,
3335 GtkCellRenderer *renderer,
3336 GtkOrientation orientation,
3342 GtkCellAreaPrivate *priv;
3343 gint focus_line_width;
3345 g_return_if_fail (GTK_IS_CELL_AREA (area));
3346 g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
3347 g_return_if_fail (GTK_IS_WIDGET (widget));
3348 g_return_if_fail (minimum_size != NULL);
3349 g_return_if_fail (natural_size != NULL);
3353 gtk_widget_style_get (widget, "focus-line-width", &focus_line_width, NULL);
3355 focus_line_width *= 2;
3357 if (orientation == GTK_ORIENTATION_HORIZONTAL)
3360 gtk_cell_renderer_get_preferred_width (renderer, widget, minimum_size, natural_size);
3363 for_size = MAX (0, for_size - focus_line_width);
3365 gtk_cell_renderer_get_preferred_width_for_height (renderer, widget, for_size,
3366 minimum_size, natural_size);
3369 else /* GTK_ORIENTATION_VERTICAL */
3372 gtk_cell_renderer_get_preferred_height (renderer, widget, minimum_size, natural_size);
3375 for_size = MAX (0, for_size - focus_line_width);
3377 gtk_cell_renderer_get_preferred_height_for_width (renderer, widget, for_size,
3378 minimum_size, natural_size);
3382 *minimum_size += focus_line_width;
3383 *natural_size += focus_line_width;