/**
* clutter_table_layout_get_span:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor child of @layout
* @column_span: (out): return location for the col span
* @row_span: (out): return location for the row span
*
* Retrieves the row and column span for @actor as set using
* clutter_table_layout_pack() or clutter_table_layout_set_span()
*
*
*/
void
clutter_table_layout_get_span (ClutterTableLayout *layout,
ClutterActor *actor,
gint *column_span,
gint *row_span)
{
ClutterTableLayoutPrivate *priv;
ClutterLayoutManager *manager;
ClutterLayoutMeta *meta;
g_return_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout));
g_return_if_fail (CLUTTER_IS_ACTOR (actor));
priv = layout->priv;
if (priv->container == NULL)
{
g_warning ("The layout of type '%s' must be associated to "
"a ClutterContainer before querying layout "
"properties",
G_OBJECT_TYPE_NAME (layout));
return;
}
manager = CLUTTER_LAYOUT_MANAGER (layout);
meta = clutter_layout_manager_get_child_meta (manager,
priv->container,
actor);
if (meta == NULL)
{
g_warning ("No layout meta found for the child of type '%s' "
"inside the layout manager of type '%s'",
G_OBJECT_TYPE_NAME (actor),
G_OBJECT_TYPE_NAME (manager));
return;
}
g_assert (CLUTTER_IS_TABLE_CHILD (meta));
if (column_span)
*column_span = CLUTTER_TABLE_CHILD (meta)->col_span;
if (row_span)
*row_span = CLUTTER_TABLE_CHILD (meta)->row_span;
}
static void
changed_cb (ClutterActor *actor,
GParamSpec *pspec,
ClutterActor *text)
{
ClutterActorAlign x_align, y_align;
ClutterActor *box;
ClutterLayoutManager *layout;
ClutterLayoutMeta *meta;
gboolean x_expand, y_expand;
gchar *label;
gint left, top, width, height;
box = clutter_actor_get_parent (actor);
layout = clutter_actor_get_layout_manager (box);
meta = clutter_layout_manager_get_child_meta (layout,
CLUTTER_CONTAINER (box),
actor);
g_object_get (actor,
"x-align", &x_align,
"y-align", &y_align,
"x-expand", &x_expand,
"y-expand", &y_expand,
NULL);
g_object_get (meta,
"left-attach", &left,
"top-attach", &top,
"width", &width,
"height", &height,
NULL);
label = g_strdup_printf ("attach: %d,%d\n"
"span: %d,%d\n"
"expand: %d,%d\n"
"align: %s,%s",
left, top, width, height,
x_expand, y_expand,
get_align_name (x_align),
get_align_name (y_align));
clutter_text_set_text (CLUTTER_TEXT (text), label);
g_free (label);
}
/**
* clutter_table_layout_pack:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor
* @column: the column the @actor should be put, or -1 to append
* @row: the row the @actor should be put, or -1 to append
*
* Packs @actor inside the #ClutterContainer associated to @layout
* at the given row and column.
*
*
*/
void
clutter_table_layout_pack (ClutterTableLayout *layout,
ClutterActor *actor,
gint column,
gint row)
{
ClutterTableLayoutPrivate *priv;
ClutterLayoutManager *manager;
ClutterLayoutMeta *meta;
g_return_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout));
g_return_if_fail (CLUTTER_IS_ACTOR (actor));
priv = layout->priv;
if (priv->container == NULL)
{
g_warning ("The layout of type '%s' must be associated to "
"a ClutterContainer before adding children",
G_OBJECT_TYPE_NAME (layout));
return;
}
update_row_col (CLUTTER_TABLE_LAYOUT (layout), priv->container);
clutter_actor_add_child (CLUTTER_ACTOR (priv->container), actor);
manager = CLUTTER_LAYOUT_MANAGER (layout);
meta = clutter_layout_manager_get_child_meta (manager,
priv->container,
actor);
g_assert (CLUTTER_IS_TABLE_CHILD (meta));
if (row < 0)
row = priv->n_rows;
if (column < 0)
column = priv->n_cols;
table_child_set_position (CLUTTER_TABLE_CHILD (meta), column, row);
}
/**
* clutter_bin_layout_set_alignment:
* @self: a #ClutterBinLayout
* @child: (allow-none): a child of @container
* @x_align: the horizontal alignment policy to be used for the @child
* inside @container
* @y_align: the vertical aligment policy to be used on the @child
* inside @container
*
* Sets the horizontal and vertical alignment policies to be applied
* to a @child of @self
*
* If @child is %NULL then the @x_align and @y_align values will
* be set as the default alignment policies
*
* Since: 1.2
*/
void
clutter_bin_layout_set_alignment (ClutterBinLayout *self,
ClutterActor *child,
ClutterBinAlignment x_align,
ClutterBinAlignment y_align)
{
ClutterBinLayoutPrivate *priv;
ClutterLayoutManager *manager;
ClutterLayoutMeta *meta;
g_return_if_fail (CLUTTER_IS_BIN_LAYOUT (self));
g_return_if_fail (child == NULL || CLUTTER_IS_ACTOR (child));
priv = self->priv;
if (priv->container == NULL)
{
if (child == NULL)
{
set_x_align (self, x_align);
set_y_align (self, y_align);
}
else
g_warning ("The layout of type '%s' must be associated to "
"a ClutterContainer before setting the alignment "
"on its children",
G_OBJECT_TYPE_NAME (self));
return;
}
manager = CLUTTER_LAYOUT_MANAGER (self);
meta = clutter_layout_manager_get_child_meta (manager,
priv->container,
child);
g_assert (CLUTTER_IS_BIN_LAYER (meta));
set_layer_x_align (CLUTTER_BIN_LAYER (meta), x_align);
set_layer_y_align (CLUTTER_BIN_LAYER (meta), y_align);
}
static inline void
clutter_box_set_property_valist (ClutterBox *box,
ClutterActor *actor,
const gchar *first_property,
va_list var_args)
{
ClutterContainer *container = CLUTTER_CONTAINER (box);
ClutterBoxPrivate *priv = box->priv;
ClutterLayoutMeta *meta;
GObjectClass *klass;
const gchar *pname;
if (priv->manager == NULL)
return;
meta = clutter_layout_manager_get_child_meta (priv->manager,
container,
actor);
if (meta == NULL)
return;
klass = G_OBJECT_GET_CLASS (meta);
pname = first_property;
while (pname)
{
GValue value = { 0, };
GParamSpec *pspec;
gchar *error;
pspec = g_object_class_find_property (klass, pname);
if (pspec == NULL)
{
g_warning ("%s: the layout property '%s' for managers "
"of type '%s' (meta type '%s') does not exist",
G_STRLOC,
pname,
G_OBJECT_TYPE_NAME (priv->manager),
G_OBJECT_TYPE_NAME (meta));
break;
}
if (!(pspec->flags & G_PARAM_WRITABLE))
{
g_warning ("%s: the layout property '%s' for managers "
"of type '%s' (meta type '%s') is not writable",
G_STRLOC,
pspec->name,
G_OBJECT_TYPE_NAME (priv->manager),
G_OBJECT_TYPE_NAME (meta));
break;
}
G_VALUE_COLLECT_INIT (&value, G_PARAM_SPEC_VALUE_TYPE (pspec),
var_args, 0,
&error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
break;
}
clutter_layout_manager_child_set_property (priv->manager,
container, actor,
pspec->name, &value);
g_value_unset (&value);
pname = va_arg (var_args, gchar*);
}
}
/**
* clutter_box_packv:
* @box: a #ClutterBox
* @actor: a #ClutterActor
* @n_properties: the number of properties to set
* @properties: (array length=n_properties) (element-type utf8): a vector
* containing the property names to set
* @values: (array length=n_properties): a vector containing the property
* values to set
*
* Vector-based variant of clutter_box_pack(), intended for language
* bindings to use
*
* Since: 1.2
*/
void
clutter_box_packv (ClutterBox *box,
ClutterActor *actor,
guint n_properties,
const gchar * const properties[],
const GValue *values)
{
ClutterContainer *container;
ClutterBoxPrivate *priv;
ClutterLayoutMeta *meta;
GObjectClass *klass;
gint i;
g_return_if_fail (CLUTTER_IS_BOX (box));
g_return_if_fail (CLUTTER_IS_ACTOR (actor));
container = CLUTTER_CONTAINER (box);
clutter_container_add_actor (container, actor);
priv = box->priv;
meta = clutter_layout_manager_get_child_meta (priv->manager,
container,
actor);
if (meta == NULL)
return;
klass = G_OBJECT_GET_CLASS (meta);
for (i = 0; i < n_properties; i++)
{
const gchar *pname = properties[i];
GParamSpec *pspec;
pspec = g_object_class_find_property (klass, pname);
if (pspec == NULL)
{
g_warning ("%s: the layout property '%s' for managers "
"of type '%s' (meta type '%s') does not exist",
G_STRLOC,
pname,
G_OBJECT_TYPE_NAME (priv->manager),
G_OBJECT_TYPE_NAME (meta));
break;
}
if (!(pspec->flags & G_PARAM_WRITABLE))
{
g_warning ("%s: the layout property '%s' for managers "
"of type '%s' (meta type '%s') is not writable",
G_STRLOC,
pspec->name,
G_OBJECT_TYPE_NAME (priv->manager),
G_OBJECT_TYPE_NAME (meta));
break;
}
clutter_layout_manager_child_set_property (priv->manager,
container, actor,
pname, &values[i]);
}
}
static void
clutter_bin_layout_allocate (ClutterLayoutManager *manager,
ClutterContainer *container,
const ClutterActorBox *allocation,
ClutterAllocationFlags flags)
{
gfloat allocation_x, allocation_y;
gfloat available_w, available_h;
ClutterActor *actor, *child;
ClutterActorIter iter;
gboolean use_animations;
ClutterAnimationMode easing_mode;
guint easing_duration, easing_delay;
clutter_actor_box_get_origin (allocation, &allocation_x, &allocation_y);
clutter_actor_box_get_size (allocation, &available_w, &available_h);
actor = CLUTTER_ACTOR (container);
use_animations = clutter_layout_manager_get_easing_state (manager,
&easing_mode,
&easing_duration,
&easing_delay);
clutter_actor_iter_init (&iter, actor);
while (clutter_actor_iter_next (&iter, &child))
{
ClutterLayoutMeta *meta;
ClutterBinLayer *layer;
ClutterActorBox child_alloc = { 0, };
gdouble x_align, y_align;
gboolean x_fill, y_fill;
meta = clutter_layout_manager_get_child_meta (manager,
container,
child);
layer = CLUTTER_BIN_LAYER (meta);
if (layer->x_align == CLUTTER_BIN_ALIGNMENT_FIXED)
child_alloc.x1 = clutter_actor_get_x (child);
else
child_alloc.x1 = allocation_x;
if (layer->y_align == CLUTTER_BIN_ALIGNMENT_FIXED)
child_alloc.y1 = clutter_actor_get_y (child);
else
child_alloc.y1 = allocation_y;
child_alloc.x2 = available_w;
child_alloc.y2 = available_h;
if (clutter_actor_needs_expand (child, CLUTTER_ORIENTATION_HORIZONTAL))
{
ClutterActorAlign align;
align = _clutter_actor_get_effective_x_align (child);
x_fill = align == CLUTTER_ACTOR_ALIGN_FILL;
x_align = get_actor_align_factor (align);
}
else
{
x_fill = (layer->x_align == CLUTTER_BIN_ALIGNMENT_FILL);
x_align = get_bin_alignment_factor (layer->x_align);
}
if (clutter_actor_needs_expand (child, CLUTTER_ORIENTATION_VERTICAL))
{
ClutterActorAlign align;
align = clutter_actor_get_y_align (child);
y_fill = align == CLUTTER_ACTOR_ALIGN_FILL;
y_align = get_actor_align_factor (align);
}
else
{
y_fill = (layer->y_align == CLUTTER_BIN_ALIGNMENT_FILL);
y_align = get_bin_alignment_factor (layer->y_align);
}
if (use_animations)
{
clutter_actor_save_easing_state (child);
clutter_actor_set_easing_mode (child, easing_mode);
clutter_actor_set_easing_duration (child, easing_duration);
clutter_actor_set_easing_delay (child, easing_delay);
}
clutter_actor_allocate_align_fill (child, &child_alloc,
x_align, y_align,
x_fill, y_fill,
flags);
if (use_animations)
clutter_actor_restore_easing_state (child);
}
}
static void
calculate_row_heights (ClutterTableLayout *self,
ClutterContainer *container,
gint for_height)
{
ClutterTableLayoutPrivate *priv = self->priv;
ClutterLayoutManager *manager = CLUTTER_LAYOUT_MANAGER (self);
ClutterActor *actor, *child;
gint i;
DimensionData *rows, *columns;
ClutterOrientation orientation = CLUTTER_ORIENTATION_VERTICAL;
update_row_col (self, container);
g_array_set_size (priv->rows, 0);
g_array_set_size (priv->rows, self->priv->n_rows);
rows = (DimensionData *) (void *) priv->rows->data;
columns = (DimensionData *) (void *) priv->columns->data;
/* reset the visibility of all rows */
priv->visible_rows = 0;
for (i = 0; i < priv->n_rows; i++)
{
rows[i].expand = FALSE;
rows[i].visible = FALSE;
}
actor = CLUTTER_ACTOR (container);
/* STAGE ONE: calculate row heights for non-spanned children */
for (child = clutter_actor_get_first_child (actor);
child != NULL;
child = clutter_actor_get_next_sibling (child))
{
ClutterTableChild *meta;
DimensionData *row;
gfloat c_min, c_pref;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
meta =
CLUTTER_TABLE_CHILD (clutter_layout_manager_get_child_meta (manager,
container,
child));
if (meta->row_span > 1)
continue;
row = &rows[meta->row];
if (!row->visible)
{
row->visible = TRUE;
priv->visible_rows += 1;
}
clutter_actor_get_preferred_height (child, columns[meta->col].final_size,
&c_min, &c_pref);
row->min_size = MAX (row->min_size, c_min);
row->pref_size = MAX (row->pref_size, c_pref);
if (!row->expand)
row->expand = clutter_actor_needs_expand (child, orientation);
}
/* STAGE TWO: take spanning children into account */
for (child = clutter_actor_get_first_child (actor);
child != NULL;
child = clutter_actor_get_next_sibling (child))
{
ClutterTableChild *meta;
gfloat c_min, c_pref;
gfloat min_height, pref_height;
gint start_row, end_row;
gint n_expand;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
meta =
CLUTTER_TABLE_CHILD (clutter_layout_manager_get_child_meta (manager,
container,
child));
if (meta->row_span < 2)
continue;
start_row = meta->row;
end_row = meta->row + meta->row_span - 1;
clutter_actor_get_preferred_height (child, columns[meta->col].final_size,
&c_min, &c_pref);
/* check there is enough room for this actor */
min_height = 0;
pref_height = 0;
n_expand = 0;
for (i = start_row; i <= end_row; i++)
{
min_height += rows[i].min_size;
pref_height += rows[i].pref_size;
if (rows[i].expand)
n_expand++;
if (!rows[i].visible)
{
rows[i].visible = TRUE;
priv->visible_rows += 1;
}
if (!rows[i].expand)
rows[i].expand = clutter_actor_needs_expand (child, orientation);
}
min_height += priv->row_spacing * (meta->row_span - 1);
pref_height += priv->row_spacing * (meta->row_span - 1);
/* 1) If the minimum height of the rows spanned is less than the
* minimum height of the child that is spanning them, then we
* must increase the minimum height of the rows spanned.
*
* 2) If the preferred height of the spanned rows is more than
* the minimum height of the spanning child, then we can start
* at this size and decrease each row evenly.
*
* 3) If the preferred height of the rows is more than the minimum
* height of the spanned child, then we can start at the preferred
* height and expand.
*/
/* (1) */
if (c_min > min_height)
{
/* (2) */
/* we can start from preferred height and decrease */
if (pref_height > c_min)
{
for (i = start_row; i <= end_row; i++)
rows[i].final_size = rows[i].pref_size;
while (pref_height > c_min)
{
for (i = start_row; i <= end_row; i++)
{
if (rows[i].final_size > rows[i].min_size)
{
rows[i].final_size--;
pref_height--;
}
}
}
for (i = start_row; i <= end_row; i++)
rows[i].min_size = rows[i].final_size;
}
else
{
/* (3) */
/* we can expand from preferred size */
gfloat expand_by = c_pref - pref_height;
for (i = start_row; i <= end_row; i++)
{
if (n_expand)
{
if (rows[i].expand)
rows[i].min_size = rows[i].pref_size
+ expand_by / n_expand;
}
else
rows[i].min_size = rows[i].pref_size
+ expand_by / meta->row_span;
}
}
}
}
/* calculate final heights */
if (for_height >= 0)
{
gfloat min_height, pref_height;
gint n_expand;
min_height = 0;
pref_height = 0;
n_expand = 0;
for (i = 0; i < self->priv->n_rows; i++)
{
pref_height += rows[i].pref_size;
min_height += rows[i].min_size;
if (rows[i].expand)
n_expand++;
}
pref_height += priv->row_spacing * (priv->n_rows - 1);
min_height += priv->row_spacing * (priv->n_rows - 1);
if (for_height <= min_height)
{
/* erk, we can't shrink this! */
for (i = 0; i < self->priv->n_rows; i++)
rows[i].final_size = rows[i].min_size;
return;
}
if (for_height == pref_height)
{
/* perfect! */
for (i = 0; i < self->priv->n_rows; i++)
rows[i].final_size = rows[i].pref_size;
return;
}
/* for_height is between min_height and pref_height */
if (for_height < pref_height && for_height > min_height)
{
gfloat height;
/* shrink rows until they reach min_height */
/* start with all rows at preferred size */
for (i = 0; i < self->priv->n_rows; i++)
rows[i].final_size = rows[i].pref_size;
height = pref_height;
while (height > for_height)
{
for (i = 0; i < priv->n_rows; i++)
{
if (rows[i].final_size > rows[i].min_size)
{
rows[i].final_size--;
height--;
}
}
}
return;
}
/* expand rows */
if (for_height > pref_height)
{
gfloat extra_height = for_height - pref_height;
gint remaining;
if (n_expand)
remaining = (gint) extra_height % n_expand;
else
remaining = (gint) extra_height % self->priv->n_rows;
for (i = 0; i < self->priv->n_rows; i++)
{
if (rows[i].expand)
{
rows[i].final_size = rows[i].pref_size
+ (extra_height / n_expand);
}
else
rows[i].final_size = rows[i].pref_size;
}
/* distribute the remainder among children */
i = 0;
while (remaining)
{
rows[i].final_size++;
i++;
remaining--;
}
}
}
}
static void
calculate_col_widths (ClutterTableLayout *self,
ClutterContainer *container,
gint for_width)
{
ClutterTableLayoutPrivate *priv = self->priv;
ClutterLayoutManager *manager = CLUTTER_LAYOUT_MANAGER (self);
ClutterActor *actor, *child;
gint i;
DimensionData *columns;
ClutterOrientation orientation = CLUTTER_ORIENTATION_HORIZONTAL;
update_row_col (self, container);
g_array_set_size (priv->columns, 0);
g_array_set_size (priv->columns, priv->n_cols);
columns = (DimensionData *) (void *) priv->columns->data;
/* reset the visibility of all columns */
priv->visible_cols = 0;
for (i = 0; i < priv->n_cols; i++)
{
columns[i].expand = FALSE;
columns[i].visible = FALSE;
}
actor = CLUTTER_ACTOR (container);
/* STAGE ONE: calculate column widths for non-spanned children */
for (child = clutter_actor_get_first_child (actor);
child != NULL;
child = clutter_actor_get_next_sibling (child))
{
ClutterTableChild *meta;
DimensionData *col;
gfloat c_min, c_pref;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
meta =
CLUTTER_TABLE_CHILD (clutter_layout_manager_get_child_meta (manager,
container,
child));
if (meta->col_span > 1)
continue;
col = &columns[meta->col];
if (!col->visible)
{
col->visible = TRUE;
priv->visible_cols += 1;
}
clutter_actor_get_preferred_width (child, -1, &c_min, &c_pref);
col->min_size = MAX (col->min_size, c_min);
col->pref_size = MAX (col->pref_size, c_pref);
if (!col->expand)
col->expand = clutter_actor_needs_expand (child, orientation);
}
/* STAGE TWO: take spanning children into account */
for (child = clutter_actor_get_first_child (actor);
child != NULL;
child = clutter_actor_get_next_sibling (child))
{
ClutterTableChild *meta;
gfloat c_min, c_pref;
gfloat min_width, pref_width;
gint start_col, end_col;
gint n_expand;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
meta =
CLUTTER_TABLE_CHILD (clutter_layout_manager_get_child_meta (manager,
container,
child));
if (meta->col_span < 2)
continue;
start_col = meta->col;
end_col = meta->col + meta->col_span - 1;
clutter_actor_get_preferred_width (child, -1, &c_min, &c_pref);
/* check there is enough room for this actor */
min_width = 0;
pref_width = 0;
n_expand = 0;
for (i = start_col; i <= end_col; i++)
{
min_width += columns[i].min_size;
pref_width += columns[i].pref_size;
if (columns[i].expand)
n_expand++;
if (!columns[i].visible)
{
columns[i].visible = TRUE;
priv->visible_cols += 1;
}
if (!columns[i].expand)
columns[i].expand = clutter_actor_needs_expand (child, orientation);
}
min_width += priv->col_spacing * (meta->col_span - 1);
pref_width += priv->col_spacing * (meta->col_span - 1);
/* see calculate_row_heights() for comments */
/* (1) */
if (c_min > min_width)
{
/* (2) */
/* we can start from preferred width and decrease */
if (pref_width > c_min)
{
for (i = start_col; i <= end_col; i++)
columns[i].final_size = columns[i].pref_size;
while (pref_width > c_min)
{
for (i = start_col; i <= end_col; i++)
{
if (columns[i].final_size > columns[i].min_size)
{
columns[i].final_size--;
pref_width--;
}
}
}
for (i = start_col; i <= end_col; i++)
columns[i].min_size = columns[i].final_size;
}
else
{
/* (3) */
/* we can expand from preferred size */
gfloat expand_by;
expand_by = c_pref - pref_width;
for (i = start_col; i <= end_col; i++)
{
if (n_expand)
{
if (columns[i].expand)
columns[i].min_size = columns[i].pref_size
+ expand_by / n_expand;
}
else
columns[i].min_size = columns[i].pref_size
+ expand_by / meta->col_span;
}
}
}
}
/* calculate final widths */
if (for_width >= 0)
{
gfloat min_width, pref_width;
gint n_expand;
min_width = 0;
pref_width = 0;
n_expand = 0;
for (i = 0; i < self->priv->n_cols; i++)
{
pref_width += columns[i].pref_size;
min_width += columns[i].min_size;
if (columns[i].expand)
n_expand++;
}
pref_width += priv->col_spacing * (priv->n_cols - 1);
min_width += priv->col_spacing * (priv->n_cols - 1);
if (for_width <= min_width)
{
/* erk, we can't shrink this! */
for (i = 0; i < priv->n_cols; i++)
columns[i].final_size = columns[i].min_size;
return;
}
if (for_width == pref_width)
{
/* perfect! */
for (i = 0; i < self->priv->n_cols; i++)
columns[i].final_size = columns[i].pref_size;
return;
}
/* for_width is between min_width and pref_width */
if (for_width < pref_width && for_width > min_width)
{
gfloat width;
/* shrink columns until they reach min_width */
/* start with all columns at preferred size */
for (i = 0; i < self->priv->n_cols; i++)
columns[i].final_size = columns[i].pref_size;
width = pref_width;
while (width > for_width)
{
for (i = 0; i < self->priv->n_cols; i++)
{
if (columns[i].final_size > columns[i].min_size)
{
columns[i].final_size--;
width--;
}
}
}
return;
}
/* expand columns */
if (for_width > pref_width)
{
gfloat extra_width = for_width - pref_width;
gint remaining;
if (n_expand)
remaining = (gint) extra_width % n_expand;
else
remaining = (gint) extra_width % priv->n_cols;
for (i = 0; i < self->priv->n_cols; i++)
{
if (columns[i].expand)
{
columns[i].final_size = columns[i].pref_size
+ (extra_width / n_expand);
}
else
columns[i].final_size = columns[i].pref_size;
}
/* distribute the remainder among children */
i = 0;
while (remaining)
{
columns[i].final_size++;
i++;
remaining--;
}
}
}
}
static void
clutter_table_layout_allocate (ClutterLayoutManager *layout,
ClutterContainer *container,
const ClutterActorBox *box,
ClutterAllocationFlags flags)
{
ClutterTableLayout *self = CLUTTER_TABLE_LAYOUT (layout);
ClutterTableLayoutPrivate *priv = self->priv;
ClutterActor *actor, *child;
gint row_spacing, col_spacing;
gint i;
DimensionData *rows, *columns;
update_row_col (self, container);
if (priv->n_cols < 1 || priv->n_rows < 1)
return;
actor = CLUTTER_ACTOR (container);
if (clutter_actor_get_n_children (actor) == 0)
return;
col_spacing = (priv->col_spacing);
row_spacing = (priv->row_spacing);
calculate_table_dimensions (self, container,
box->x2 - box->x1,
box->y2 - box->y1);
rows = (DimensionData *) (void *) priv->rows->data;
columns = (DimensionData *) (void *) priv->columns->data;
for (child = clutter_actor_get_first_child (actor);
child != NULL;
child = clutter_actor_get_next_sibling (child))
{
gint row, col, row_span, col_span;
gint col_width, row_height;
ClutterTableChild *meta;
ClutterActorBox childbox;
gint child_x, child_y;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
meta =
CLUTTER_TABLE_CHILD (clutter_layout_manager_get_child_meta (layout,
container,
child));
/* get child properties */
col = meta->col;
row = meta->row;
row_span = meta->row_span;
col_span = meta->col_span;
/* initialise the width and height */
col_width = columns[col].final_size;
row_height = rows[row].final_size;
/* Add the widths of the spanned columns:
*
* First check that we have a non-zero span. Then we loop over each of
* the columns that we're spanning but we stop short if we go past the
* number of columns in the table. This is necessary to avoid accessing
* uninitialised memory. We add the spacing in here too since we only
* want to add as much spacing as times we successfully span.
*/
if (col + col_span > priv->n_cols)
g_warning (G_STRLOC ": column-span exceeds number of columns");
if (row + row_span > priv->n_rows)
g_warning (G_STRLOC ": row-span exceeds number of rows");
if (col_span > 1)
{
for (i = col + 1; i < col + col_span && i < priv->n_cols; i++)
{
col_width += columns[i].final_size;
col_width += col_spacing;
}
}
/* add the height of the spanned rows */
if (row_span > 1)
{
for (i = row + 1; i < row + row_span && i < priv->n_rows; i++)
{
row_height += rows[i].final_size;
row_height += row_spacing;
}
}
/* calculate child x */
child_x = clutter_actor_box_get_x (box);
for (i = 0; i < col; i++)
{
if (columns[i].visible)
{
child_x += columns[i].final_size;
child_x += col_spacing;
}
}
/* calculate child y */
child_y = clutter_actor_box_get_y (box);
for (i = 0; i < row; i++)
{
if (rows[i].visible)
{
child_y += rows[i].final_size;
child_y += row_spacing;
}
}
/* set up childbox */
childbox.x1 = (float) child_x;
childbox.x2 = (float) MAX (0, child_x + col_width);
childbox.y1 = (float) child_y;
childbox.y2 = (float) MAX (0, child_y + row_height);
clutter_actor_allocate (child, &childbox, flags);
}
}
static void
clutter_bin_layout_allocate (ClutterLayoutManager *manager,
ClutterContainer *container,
const ClutterActorBox *allocation,
ClutterAllocationFlags flags)
{
gfloat allocation_x, allocation_y;
gfloat available_w, available_h;
ClutterActor *actor, *child;
ClutterActorIter iter;
clutter_actor_box_get_origin (allocation, &allocation_x, &allocation_y);
clutter_actor_box_get_size (allocation, &available_w, &available_h);
actor = CLUTTER_ACTOR (container);
clutter_actor_iter_init (&iter, actor);
while (clutter_actor_iter_next (&iter, &child))
{
ClutterLayoutMeta *meta;
ClutterBinLayer *layer;
ClutterActorBox child_alloc = { 0, };
gdouble x_align, y_align;
gboolean x_fill, y_fill, is_fixed_position_set;
float fixed_x, fixed_y;
if (!clutter_actor_is_visible (child))
continue;
meta = clutter_layout_manager_get_child_meta (manager,
container,
child);
layer = CLUTTER_BIN_LAYER (meta);
fixed_x = fixed_y = 0.f;
g_object_get (child,
"fixed-position-set", &is_fixed_position_set,
"fixed-x", &fixed_x,
"fixed-y", &fixed_y,
NULL);
/* XXX:2.0 - remove the FIXED alignment, and just use the fixed position
* of the actor if one is set
*/
if (is_fixed_position_set ||
layer->x_align == CLUTTER_BIN_ALIGNMENT_FIXED)
{
if (is_fixed_position_set)
child_alloc.x1 = fixed_x;
else
child_alloc.x1 = clutter_actor_get_x (child);
}
else
child_alloc.x1 = allocation_x;
if (is_fixed_position_set ||
layer->y_align == CLUTTER_BIN_ALIGNMENT_FIXED)
{
if (is_fixed_position_set)
child_alloc.y1 = fixed_y;
else
child_alloc.y1 = clutter_actor_get_y (child);
}
else
child_alloc.y1 = allocation_y;
child_alloc.x2 = allocation_x + available_w;
child_alloc.y2 = allocation_y + available_h;
if (clutter_actor_needs_expand (child, CLUTTER_ORIENTATION_HORIZONTAL))
{
ClutterActorAlign align;
align = clutter_actor_get_x_align (child);
x_fill = align == CLUTTER_ACTOR_ALIGN_FILL;
x_align = get_actor_align_factor (align);
}
else
{
ClutterTextDirection text_dir;
x_fill = (layer->x_align == CLUTTER_BIN_ALIGNMENT_FILL);
text_dir = clutter_actor_get_text_direction (child);
if (!is_fixed_position_set)
x_align = get_bin_alignment_factor (layer->x_align, text_dir);
else
x_align = 0.0;
}
if (clutter_actor_needs_expand (child, CLUTTER_ORIENTATION_VERTICAL))
{
ClutterActorAlign align;
align = clutter_actor_get_y_align (child);
y_fill = align == CLUTTER_ACTOR_ALIGN_FILL;
y_align = get_actor_align_factor (align);
}
else
{
y_fill = (layer->y_align == CLUTTER_BIN_ALIGNMENT_FILL);
if (!is_fixed_position_set)
y_align = get_bin_alignment_factor (layer->y_align,
CLUTTER_TEXT_DIRECTION_LTR);
else
y_align = 0.0;
}
clutter_actor_allocate_align_fill (child, &child_alloc,
x_align, y_align,
x_fill, y_fill,
flags);
}
}
