static void
shell_generic_container_get_preferred_height (ClutterActor *actor,
gfloat for_width,
gfloat *min_height_p,
gfloat *natural_height_p)
{
ShellGenericContainerAllocation *alloc = g_slice_new0 (ShellGenericContainerAllocation);
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
st_theme_node_adjust_for_width (theme_node, &for_width);
alloc->_refcount = 1;
g_signal_emit (G_OBJECT (actor), shell_generic_container_signals[GET_PREFERRED_HEIGHT], 0,
for_width, alloc);
if (min_height_p)
*min_height_p = alloc->min_size;
if (natural_height_p)
*natural_height_p = alloc->natural_size;
shell_generic_container_allocation_unref (alloc);
st_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
}
static void
st_scroll_bar_get_preferred_height (ClutterActor *self,
gfloat for_width,
gfloat *min_height_p,
gfloat *natural_height_p)
{
StScrollBar *bar = ST_SCROLL_BAR (self);
StScrollBarPrivate *priv = bar->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self));
gfloat trough_min_height, trough_natural_height;
gfloat handle_min_height, handle_natural_height;
st_theme_node_adjust_for_width (theme_node, &for_width);
_st_actor_get_preferred_height (priv->trough, for_width, TRUE,
&trough_min_height, &trough_natural_height);
_st_actor_get_preferred_height (priv->handle, for_width, TRUE,
&handle_min_height, &handle_natural_height);
if (priv->vertical)
{
if (min_height_p)
*min_height_p = trough_min_height + handle_min_height;
if (natural_height_p)
*natural_height_p = trough_natural_height + handle_natural_height;
}
else
{
if (min_height_p)
*min_height_p = MAX (trough_min_height, handle_min_height);
if (natural_height_p)
*natural_height_p = MAX (trough_natural_height, handle_natural_height);
}
st_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
}
static void
st_scroll_view_get_preferred_height (ClutterActor *actor,
gfloat for_width,
gfloat *min_height_p,
gfloat *natural_height_p)
{
StScrollViewPrivate *priv = ST_SCROLL_VIEW (actor)->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
gboolean account_for_hscrollbar = FALSE;
gfloat min_height = 0, natural_height;
gfloat child_min_height, child_natural_height;
gfloat child_min_width;
gfloat sb_width;
if (!priv->child)
return;
st_theme_node_adjust_for_width (theme_node, &for_width);
clutter_actor_get_preferred_width (priv->child, -1,
&child_min_width, NULL);
if (min_height_p)
*min_height_p = 0;
sb_width = get_scrollbar_width (ST_SCROLL_VIEW (actor), -1);
switch (priv->vscrollbar_policy)
{
case GTK_POLICY_NEVER:
break;
case GTK_POLICY_ALWAYS:
case GTK_POLICY_AUTOMATIC:
/* We've requested space for the scrollbar, subtract it back out */
for_width -= sb_width;
break;
}
switch (priv->hscrollbar_policy)
{
case GTK_POLICY_NEVER:
account_for_hscrollbar = FALSE;
break;
case GTK_POLICY_ALWAYS:
account_for_hscrollbar = TRUE;
break;
case GTK_POLICY_AUTOMATIC:
account_for_hscrollbar = for_width < child_min_width;
break;
}
clutter_actor_get_preferred_height (priv->child, for_width,
&child_min_height, &child_natural_height);
natural_height = child_natural_height;
switch (priv->vscrollbar_policy)
{
case GTK_POLICY_NEVER:
min_height = child_min_height;
break;
case GTK_POLICY_ALWAYS:
case GTK_POLICY_AUTOMATIC:
/* Should theoretically use the min height of the vscrollbar,
* but that's not cleanly defined at the moment */
min_height = 0;
break;
}
if (account_for_hscrollbar)
{
float sb_height = get_scrollbar_height (ST_SCROLL_VIEW (actor), for_width);
min_height += sb_height;
natural_height += sb_height;
}
if (min_height_p)
*min_height_p = min_height;
if (natural_height_p)
*natural_height_p = natural_height;
st_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
}
static void
st_table_get_preferred_height (ClutterActor *self,
gfloat for_width,
gfloat *min_height_p,
gfloat *natural_height_p)
{
gint *min_heights, *pref_heights;
gfloat total_min_height, total_pref_height;
StTablePrivate *priv = ST_TABLE (self)->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self));
gint i;
gint *min_widths;
ClutterActor *child;
/* We only support height-for-width allocation. So if we are called
* width-for-height, calculate heights based on our natural width
*/
if (for_width < 0)
{
float natural_width;
clutter_actor_get_preferred_width (self, -1, NULL, &natural_width);
for_width = natural_width;
}
if (priv->n_rows < 1)
{
*min_height_p = 0;
*natural_height_p = 0;
return;
}
st_theme_node_adjust_for_width (theme_node, &for_width);
/* Setting size to zero and then what we want it to be causes a clear if
* clear flag is set (which it should be.)
*/
g_array_set_size (priv->min_heights, 0);
g_array_set_size (priv->pref_heights, 0);
g_array_set_size (priv->min_heights, priv->n_rows);
g_array_set_size (priv->pref_heights, priv->n_rows);
/* use min_widths to help allocation of height-for-width widgets */
min_widths = st_table_calculate_col_widths (ST_TABLE (self), for_width);
min_heights = (gint *) priv->min_heights->data;
pref_heights = (gint *) priv->pref_heights->data;
/* calculate minimum row heights */
for (child = clutter_actor_get_first_child (self);
child != NULL;
child = clutter_actor_get_next_sibling (child))
{
gint row, col, col_span, cell_width, row_span;
gfloat min, pref;
StTableChild *meta;
meta = (StTableChild *) clutter_container_get_child_meta (CLUTTER_CONTAINER (self), child);
if (!meta->allocate_hidden && !CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
/* get child properties */
row = meta->row;
col = meta->col;
col_span = meta->col_span;
row_span = meta->row_span;
cell_width = 0;
for (i = 0; i < col_span && col + i < priv->n_cols; i++)
cell_width += min_widths[col + i];
_st_actor_get_preferred_height (child, (float) cell_width, meta->x_fill,
&min, &pref);
if (row_span == 1 && min > min_heights[row])
min_heights[row] = min;
if (row_span == 1 && pref > pref_heights[row])
pref_heights[row] = pref;
}
/* start off with row spacing */
total_min_height = (priv->n_rows - 1) * (float) (priv->row_spacing);
total_pref_height = total_min_height;
for (i = 0; i < priv->n_rows; i++)
{
total_min_height += min_heights[i];
total_pref_height += pref_heights[i];
}
if (min_height_p)
*min_height_p = total_min_height;
if (natural_height_p)
*natural_height_p = total_pref_height;
st_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
}
