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layout, box: Write long description for Box

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Also have an example of how to create a Box with a layout manager
and how to use the pack() method.
This commit is contained in:
Emmanuele Bassi 2009-10-15 12:04:50 +01:00
parent 9f06f726d4
commit adca939101
1 changed files with 44 additions and 1 deletions
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45
clutter/clutter-box.c
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@ -2,7 +2,44 @@
* SECTION:clutter-box
* @short_description: A Generic layout container
*
* #ClutterBox is a FIXME
* #ClutterBox is a #ClutterActor sub-class implementing the #ClutterContainer
* interface. A Box delegates the whole size requisition and size allocation to
* a #ClutterLayoutManager instance.
*
* <example id="example-clutter-box">
* <title>Using ClutterBox</title>
* <para>The following code shows how to create a #ClutterBox with
* a #ClutterLayoutManager sub-class, and how to add children to
* it via clutter_box_pack().</para>
* <programlisting>
* ClutterActor *box;
* ClutterLayoutManager *layout;
*
* /&ast; Create the layout manager first &ast;/
* layout = clutter_box_layout_new ();
* clutter_box_layout_set_homogeneous (CLUTTER_BOX_LAYOUT (layout), TRUE);
* clutter_box_layout_set_spacing (CLUTTER_BOX_LAYOUT (layout), 12);
*
* /&ast; Then create the ClutterBox actor. The Box will take
* &ast; ownership of the ClutterLayoutManager instance by sinking
* &ast; its floating reference
* &ast;/
* box = clutter_box_new (layout);
*
* /&ast; Now add children to the Box using the variadic arguments
* &ast; function clutter_box_pack() to set layout properties
* &ast;/
* clutter_box_pack (CLUTTER_BOX (box), actor,
* "x-align", CLUTTER_BOX_ALIGNMENT_CENTER,
* "y-align", CLUTTER_BOX_ALIGNMENT_END,
* "expand", TRUE,
* NULL);
* </programlisting>
* </example>
*
* #ClutterBox<!-- -->'s clutter_box_pack() wraps the generic
* clutter_container_add_actor() function, but it also allows setting
* layout properties while adding the new child to the box.
*
* #ClutterBox is available since Clutter 1.2
*/
@ -237,6 +274,9 @@ clutter_box_real_get_preferred_width (ClutterActor *actor,
{
ClutterBoxPrivate *priv = CLUTTER_BOX (actor)->priv;
/* if we don't have any children don't bother proxying the
* call to the layout manager instance
*/
if (priv->children == NULL)
{
if (min_width)
@ -262,6 +302,9 @@ clutter_box_real_get_preferred_height (ClutterActor *actor,
{
ClutterBoxPrivate *priv = CLUTTER_BOX (actor)->priv;
/* if we don't have any children don't bother proxying the
* call to the layout manager instance
*/
if (priv->children == NULL)
{
if (min_height)