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mutter/clutter/clutter-table-layout.c
José Dapena Paz d14e294d86 Add ClutterTableLayout, a layout showing children in rows and columns 
A TableLayout is a layout manager that allocates its children in rows
and columns. Each child is assigned to a cell (or more if a cell span
is set).

The supported child properties are:

  • x-expand and y-expand: if this cell with try to allocate the
    available extra space for the table.
  • x-fill and y-fill: if the child will get all the space available in
    the cell.
  • x-align and y-align: if the child does not fill the cell, then
    where the child will be aligned inside the cell.
  • row-span and col-span: number of cells the child will allocate for
    itself.

Also, the TableLayout has row-spacing and col-spacing for specifying
the space in pixels between rows and between columns.

We also include a simple test of the layout manager, and the
documentation updates.

The TableLayout was implemented starting from MxTable and
ClutterBoxLayout.

http://bugzilla.clutter-project.org/show_bug.cgi?id=2038

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2010-08-10 23:20:06 +01:00

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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Author:
* Jose Dapena Paz <jdapena@igalia.com>
*
* Based on the MX MxTable actor by:
* Thomas Wood <thomas.wood@intel.com>
* and ClutterBoxLayout by:
* Emmanuele Bassi <ebassi@linux.intel.com>
*/
/**
* SECTION:clutter-table-layout
* @title: ClutterTableLayout
* @short_description: A layout manager arranging children in rows
* and columns
*
* The #ClutterTableLayout is a #ClutterLayoutManager implementing the
* following layout policy:
*
* <itemizedlist>
* <listitem><para>children are arranged in a table</para></listitem>
* <listitem><para>each child specifies the specific row and column
* cell to appear;</para></listitem>
* <listitem><para>a child can also set a span, and this way, take
* more than one cell both horizontally and vertically;</para></listitem>
* <listitem><para>each child will be allocated to its natural
* size or, if set to expand, the available size;</para></listitem>
* <listitem><para>if a child is set to fill on either (or both)
* axis, its allocation will match all the available size; the
* fill layout property only makes sense if the expand property is
* also set;</para></listitem>
* <listitem><para>if a child is set to expand but not to fill then
* it is possible to control the alignment using the horizontal and
* vertical alignment layout properties.</para></listitem>
* </itemizedlist>
*
* It is possible to control the spacing between children of a
* #ClutterTableLayout by using clutter_table_layout_set_row_spacing()
* and clutter_table_layout_set_column_spacing().
*
* In order to set the layout properties when packing an actor inside a
* #ClutterTableLayout you should use the clutter_table_layout_pack()
* function.
*
* A #ClutterTableLayout can use animations to transition between different
* values of the layout management properties; the easing mode and duration
* used for the animations are controlled by the
* #ClutterTableLayout:easing-mode and #ClutterTableLayout:easing-duration
* properties and their accessor functions.
*
* #ClutterTableLayout is available since Clutter 1.4
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h>
#include "clutter-table-layout.h"
#include "clutter-debug.h"
#include "clutter-enum-types.h"
#include "clutter-layout-meta.h"
#include "clutter-private.h"
#include "clutter-types.h"
#define CLUTTER_TYPE_TABLE_CHILD (clutter_table_child_get_type ())
#define CLUTTER_TABLE_CHILD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_TABLE_CHILD, ClutterTableChild))
#define CLUTTER_IS_TABLE_CHILD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_TABLE_CHILD))
#define CLUTTER_TABLE_LAYOUT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_TABLE_LAYOUT, ClutterTableLayoutPrivate))
typedef struct _ClutterTableChild ClutterTableChild;
typedef struct _ClutterLayoutMetaClass ClutterTableChildClass;
typedef struct _DimensionData {
gfloat min_size;
gfloat pref_size;
gfloat final_size;
guint expand : 1;
guint shrink : 1;
guint visible : 1;
} DimensionData;
struct _ClutterTableLayoutPrivate
{
ClutterContainer *container;
guint col_spacing;
guint row_spacing;
gint n_rows;
gint n_cols;
gint active_row;
gint active_col;
gint visible_rows;
gint visible_cols;
GArray *columns;
GArray *rows;
gulong easing_mode;
guint easing_duration;
guint is_animating : 1;
guint use_animations : 1;
};
struct _ClutterTableChild
{
ClutterLayoutMeta parent_instance;
/* the last stable allocation before an animation; it is
* used as the initial ActorBox when interpolating
*/
ClutterActorBox *last_allocation;
gint col;
gint row;
gint col_span;
gint row_span;
ClutterTableAlignment x_align;
ClutterTableAlignment y_align;
guint x_expand : 1;
guint y_expand : 1;
guint x_fill : 1;
guint y_fill : 1;
};
enum
{
PROP_CHILD_0,
PROP_CHILD_ROW,
PROP_CHILD_COLUMN,
PROP_CHILD_ROW_SPAN,
PROP_CHILD_COLUMN_SPAN,
PROP_CHILD_X_ALIGN,
PROP_CHILD_Y_ALIGN,
PROP_CHILD_X_FILL,
PROP_CHILD_Y_FILL,
PROP_CHILD_X_EXPAND,
PROP_CHILD_Y_EXPAND
};
enum
{
PROP_0,
PROP_ROW_SPACING,
PROP_COLUMN_SPACING,
PROP_USE_ANIMATIONS,
PROP_EASING_MODE,
PROP_EASING_DURATION
};
G_DEFINE_TYPE (ClutterTableChild,
clutter_table_child,
CLUTTER_TYPE_LAYOUT_META);
G_DEFINE_TYPE (ClutterTableLayout,
clutter_table_layout,
CLUTTER_TYPE_LAYOUT_MANAGER);
/*
* ClutterBoxChild
*/
static void
table_child_set_position (ClutterTableChild *self,
gint row,
gint col)
{
gboolean row_changed = FALSE, col_changed = FALSE;
if (self->row != row)
{
self->row = row;
row_changed = TRUE;
}
if (self->col != col)
{
self->col = col;
col_changed = TRUE;
}
if (row_changed || col_changed)
{
ClutterLayoutManager *layout;
ClutterTableLayoutPrivate *priv;
layout = clutter_layout_meta_get_manager (CLUTTER_LAYOUT_META (self));
priv = CLUTTER_TABLE_LAYOUT (layout)->priv;
g_object_freeze_notify (G_OBJECT (self));
if (priv->use_animations)
{
clutter_layout_manager_begin_animation (layout,
priv->easing_duration,
priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (layout);
if (row_changed)
g_object_notify (G_OBJECT (self), "row");
if (col_changed)
g_object_notify (G_OBJECT (self), "column");
g_object_thaw_notify (G_OBJECT (self));
}
}
static void
table_child_set_span (ClutterTableChild *self,
gint row_span,
gint col_span)
{
gboolean row_changed = FALSE, col_changed = FALSE;
if (self->row_span != row_span)
{
self->row_span = row_span;
row_changed = TRUE;
}
if (self->col_span != col_span)
{
self->col_span = col_span;
col_changed = TRUE;
}
if (row_changed || col_changed)
{
ClutterLayoutManager *layout;
ClutterTableLayout *table;
layout = clutter_layout_meta_get_manager (CLUTTER_LAYOUT_META (self));
table = CLUTTER_TABLE_LAYOUT (layout);
if (table->priv->use_animations)
{
clutter_layout_manager_begin_animation (layout,
table->priv->easing_duration,
table->priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (layout);
if (row_changed)
g_object_notify (G_OBJECT (self), "row-span");
if (col_changed)
g_object_notify (G_OBJECT (self), "column-span");
}
}
static void
table_child_set_align (ClutterTableChild *self,
ClutterTableAlignment x_align,
ClutterTableAlignment y_align)
{
gboolean x_changed = FALSE, y_changed = FALSE;
if (self->x_align != x_align)
{
self->x_align = x_align;
x_changed = TRUE;
}
if (self->y_align != y_align)
{
self->y_align = y_align;
y_changed = TRUE;
}
if (x_changed || y_changed)
{
ClutterLayoutManager *layout;
ClutterTableLayout *table;
layout = clutter_layout_meta_get_manager (CLUTTER_LAYOUT_META (self));
table = CLUTTER_TABLE_LAYOUT (layout);
if (table->priv->use_animations)
{
clutter_layout_manager_begin_animation (layout,
table->priv->easing_duration,
table->priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (layout);
if (x_changed)
g_object_notify (G_OBJECT (self), "x-align");
if (y_changed)
g_object_notify (G_OBJECT (self), "y-align");
}
}
static void
table_child_set_fill (ClutterTableChild *self,
gboolean x_fill,
gboolean y_fill)
{
gboolean x_changed = FALSE, y_changed = FALSE;
x_fill = !!x_fill;
y_fill = !!y_fill;
if (self->x_fill != x_fill)
{
self->x_fill = x_fill;
x_changed = TRUE;
}
if (self->y_fill != y_fill)
{
self->y_fill = y_fill;
y_changed = TRUE;
}
if (x_changed || y_changed)
{
ClutterLayoutManager *layout;
ClutterTableLayoutPrivate *priv;
layout = clutter_layout_meta_get_manager (CLUTTER_LAYOUT_META (self));
priv = CLUTTER_TABLE_LAYOUT (layout)->priv;
g_object_freeze_notify (G_OBJECT (self));
if (priv->use_animations)
{
clutter_layout_manager_begin_animation (layout,
priv->easing_duration,
priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (layout);
if (x_changed)
g_object_notify (G_OBJECT (self), "x-fill");
if (y_changed)
g_object_notify (G_OBJECT (self), "y-fill");
g_object_thaw_notify (G_OBJECT (self));
}
}
static void
table_child_set_expand (ClutterTableChild *self,
gboolean x_expand,
gboolean y_expand)
{
gboolean x_changed = FALSE, y_changed = FALSE;
x_expand = !!x_expand;
y_expand = !!y_expand;
if (self->x_expand != x_expand)
{
self->x_expand = x_expand;
x_changed = TRUE;
}
if (self->y_expand != y_expand)
{
self->y_expand = y_expand;
y_changed = TRUE;
}
if (x_changed || y_changed)
{
ClutterLayoutManager *layout;
ClutterTableLayoutPrivate *priv;
layout = clutter_layout_meta_get_manager (CLUTTER_LAYOUT_META (self));
priv = CLUTTER_TABLE_LAYOUT (layout)->priv;
g_object_freeze_notify (G_OBJECT (self));
if (priv->use_animations)
{
clutter_layout_manager_begin_animation (layout,
priv->easing_duration,
priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (layout);
if (x_changed)
g_object_notify (G_OBJECT (self), "x-expand");
if (y_changed)
g_object_notify (G_OBJECT (self), "y-expand");
g_object_thaw_notify (G_OBJECT (self));
}
}
static void
clutter_table_child_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterTableChild *self = CLUTTER_TABLE_CHILD (gobject);
switch (prop_id)
{
case PROP_CHILD_COLUMN:
table_child_set_position (self,
self->row,
g_value_get_int (value));
break;
case PROP_CHILD_ROW:
table_child_set_position (self,
g_value_get_int (value),
self->col);
break;
case PROP_CHILD_COLUMN_SPAN:
table_child_set_span (self,
self->row_span,
g_value_get_int (value));
break;
case PROP_CHILD_ROW_SPAN:
table_child_set_span (self,
g_value_get_int (value),
self->col_span);
break;
case PROP_CHILD_X_ALIGN:
table_child_set_align (self,
g_value_get_enum (value),
self->y_align);
break;
case PROP_CHILD_Y_ALIGN:
table_child_set_align (self,
self->x_align,
g_value_get_enum (value));
break;
case PROP_CHILD_X_FILL:
table_child_set_fill (self,
g_value_get_boolean (value),
self->y_fill);
break;
case PROP_CHILD_Y_FILL:
table_child_set_fill (self,
self->x_fill,
g_value_get_boolean (value));
break;
case PROP_CHILD_X_EXPAND:
table_child_set_expand (self,
g_value_get_boolean (value),
self->y_expand);
break;
case PROP_CHILD_Y_EXPAND:
table_child_set_expand (self,
self->x_expand,
g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_table_child_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterTableChild *self = CLUTTER_TABLE_CHILD (gobject);
switch (prop_id)
{
case PROP_CHILD_ROW:
g_value_set_int (value, self->row);
break;
case PROP_CHILD_COLUMN:
g_value_set_int (value, self->col);
break;
case PROP_CHILD_ROW_SPAN:
g_value_set_int (value, self->row_span);
break;
case PROP_CHILD_COLUMN_SPAN:
g_value_set_int (value, self->col_span);
break;
case PROP_CHILD_X_ALIGN:
g_value_set_enum (value, self->x_align);
break;
case PROP_CHILD_Y_ALIGN:
g_value_set_enum (value, self->y_align);
break;
case PROP_CHILD_X_FILL:
g_value_set_boolean (value, self->x_fill);
break;
case PROP_CHILD_Y_FILL:
g_value_set_boolean (value, self->y_fill);
break;
case PROP_CHILD_X_EXPAND:
g_value_set_boolean (value, self->x_expand);
break;
case PROP_CHILD_Y_EXPAND:
g_value_set_boolean (value, self->y_expand);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_table_child_finalize (GObject *gobject)
{
ClutterTableChild *self = CLUTTER_TABLE_CHILD (gobject);
clutter_actor_box_free (self->last_allocation);
G_OBJECT_CLASS (clutter_table_child_parent_class)->finalize (gobject);
}
static void
clutter_table_child_class_init (ClutterTableChildClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GParamSpec *pspec;
gobject_class->set_property = clutter_table_child_set_property;
gobject_class->get_property = clutter_table_child_get_property;
gobject_class->finalize = clutter_table_child_finalize;
pspec = g_param_spec_int ("column",
P_("Column Number"),
P_("The column the widget resides in"),
0, G_MAXINT,
0,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_COLUMN, pspec);
pspec = g_param_spec_int ("row",
P_("Row Number"),
P_("The row the widget resides in"),
0, G_MAXINT,
0,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_ROW, pspec);
pspec = g_param_spec_int ("column-span",
P_("Column Span"),
P_("The number of columns the widget should span"),
1, G_MAXINT,
1,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_COLUMN_SPAN, pspec);
pspec = g_param_spec_int ("row-span",
P_("Row Span"),
P_("The number of rows the widget should span"),
1, G_MAXINT,
1,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_ROW_SPAN, pspec);
pspec = g_param_spec_boolean ("x-expand",
P_("Horizontal Expand"),
P_("Allocate extra space for the child in horizontal axis"),
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_X_EXPAND, pspec);
pspec = g_param_spec_boolean ("y-expand",
P_("Vertical Expand"),
P_("Allocate extra space for the child in vertical axis"),
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_Y_EXPAND, pspec);
pspec = g_param_spec_boolean ("x-fill",
P_("Horizontal Fill"),
P_("Whether the child should receive priority when the container is allocating spare space on the horizontal axis"),
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_X_FILL, pspec);
pspec = g_param_spec_boolean ("y-fill",
P_("Vertical Fill"),
P_("Whether the child should receive priority when the container is allocating spare space on the vertical axis"),
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_Y_FILL, pspec);
/**
* ClutterTableLayout:x-align:
*
* The horizontal alignment of the actor within the cell
*
* Since: 1.4
*/
pspec = g_param_spec_enum ("x-align",
P_("Horizontal Alignment"),
P_("Horizontal alignment of the actor within the cell"),
CLUTTER_TYPE_TABLE_ALIGNMENT,
CLUTTER_TABLE_ALIGNMENT_CENTER,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_X_ALIGN, pspec);
/**
* ClutterTableLayout:y-align:
*
* The vertical alignment of the actor within the cell
*
* Since: 1.4
*/
pspec = g_param_spec_enum ("y-align",
P_("Vertical Alignment"),
P_("Vertical alignment of the actor within the cell"),
CLUTTER_TYPE_TABLE_ALIGNMENT,
CLUTTER_TABLE_ALIGNMENT_CENTER,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_CHILD_Y_ALIGN, pspec);
}
static void
clutter_table_child_init (ClutterTableChild *self)
{
self->col_span = 1;
self->row_span = 1;
self->x_align = CLUTTER_TABLE_ALIGNMENT_CENTER;
self->y_align = CLUTTER_TABLE_ALIGNMENT_CENTER;
self->x_expand = TRUE;
self->y_expand = TRUE;
self->x_fill = TRUE;
self->y_fill = TRUE;
self->last_allocation = NULL;
}
static GType
clutter_table_layout_get_child_meta_type (ClutterLayoutManager *manager)
{
return CLUTTER_TYPE_TABLE_CHILD;
}
static void
clutter_table_layout_set_container (ClutterLayoutManager *layout,
ClutterContainer *container)
{
ClutterTableLayoutPrivate *priv = CLUTTER_TABLE_LAYOUT (layout)->priv;
priv->container = container;
}
static void
update_row_col (ClutterTableLayout *layout,
ClutterContainer *container)
{
ClutterTableLayoutPrivate *priv = layout->priv;
ClutterLayoutManager *manager = CLUTTER_LAYOUT_MANAGER (layout);
GList *children, *l;
gint n_cols, n_rows;
n_cols = n_rows = 0;
children = container ? clutter_container_get_children (container) : NULL;
for (l = children; l; l = g_list_next (l))
{
ClutterActor *child = l->data;
ClutterTableChild *meta;
meta = CLUTTER_TABLE_CHILD (clutter_layout_manager_get_child_meta (manager, container, child));
n_cols = MAX (n_cols, meta->col + meta->col_span);
n_rows = MAX (n_rows, meta->row + meta->row_span);
}
g_list_free (children);
priv->n_cols = n_cols;
priv->n_rows = n_rows;
}
static void
calculate_col_widths (ClutterTableLayout *self,
ClutterContainer *container,
gint for_width)
{
ClutterTableLayoutPrivate *priv = self->priv;
ClutterLayoutManager *manager = CLUTTER_LAYOUT_MANAGER (self);
gint i;
DimensionData *columns;
GList *l, *children;
update_row_col (self, container);
g_array_set_size (priv->columns, 0);
g_array_set_size (priv->columns, priv->n_cols);
columns = (DimensionData *) priv->columns->data;
/* reset the visibility of all columns */
priv->visible_cols = 0;
for (i = 0; i < priv->n_cols; i++)
columns[i].visible = FALSE;
children = clutter_container_get_children (container);
/* STAGE ONE: calculate column widths for non-spanned children */
for (l = children; l; l = g_list_next (l))
{
ClutterActor *child = l->data;
ClutterTableChild *meta;
DimensionData *col;
gfloat c_min, c_pref;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
meta = (ClutterTableChild *)
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);
col->expand = MAX (col->expand, meta->x_expand);
}
/* STAGE TWO: take spanning children into account */
for (l = children; l; l = g_list_next (l))
{
ClutterActor *child = l->data;
ClutterTableChild *meta;
DimensionData *col;
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 = (ClutterTableChild *)
clutter_layout_manager_get_child_meta (manager, container, child);
if (meta->col_span < 2)
continue;
col = &columns[meta->col];
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 (!col->visible)
{
col->visible = TRUE;
priv->visible_cols += 1;
}
}
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;
}
}
}
}
g_list_free (children);
/* 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)
{
if (n_expand)
columns[i].final_size = columns[i].pref_size
+ (extra_width / n_expand);
else
columns[i].final_size = columns[i].pref_size
+ (extra_width / priv->n_cols);
}
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
calculate_row_heights (ClutterTableLayout *self,
ClutterContainer *container,
gint for_height)
{
ClutterTableLayoutPrivate *priv = self->priv;
ClutterLayoutManager *manager = CLUTTER_LAYOUT_MANAGER (self);
GList *l, *children;
gint i;
DimensionData *rows, *columns;
update_row_col (self, container);
g_array_set_size (priv->rows, 0);
g_array_set_size (priv->rows, self->priv->n_rows);
rows = (DimensionData*) priv->rows->data;
columns = (DimensionData*) priv->columns->data;
/* reset the visibility of all rows */
priv->visible_rows = 0;
for (i = 0; i < priv->n_rows; i++)
rows[i].visible = FALSE;
children = clutter_container_get_children (container);
/* STAGE ONE: calculate row heights for non-spanned children */
for (l = children; l; l = g_list_next (l))
{
ClutterActor *child = l->data;
ClutterTableChild *meta;
DimensionData *row;
gfloat c_min, c_pref;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
meta = (ClutterTableChild *)
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);
row->expand = MAX (row->expand, meta->y_expand);
}
/* STAGE TWO: take spanning children into account */
for (l = children; l; l = g_list_next (l))
{
ClutterActor *child = l->data;
ClutterTableChild *meta;
DimensionData *row;
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 = (ClutterTableChild *)
clutter_layout_manager_get_child_meta (manager, container, child);
if (meta->row_span < 2)
continue;
row = &rows[meta->row];
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;
}
}
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;
}
}
}
}
g_list_free (children);
/* 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)
{
if (n_expand)
rows[i].final_size = rows[i].pref_size
+ (extra_height / n_expand);
else
rows[i].final_size = rows[i].pref_size
+ (extra_height / priv->n_rows);
}
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_table_dimensions (ClutterTableLayout *self,
ClutterContainer *container,
gfloat for_width,
gfloat for_height)
{
calculate_col_widths (self, container, for_width);
calculate_row_heights (self, container, for_height);
}
static void
clutter_table_layout_get_preferred_width (ClutterLayoutManager *layout,
ClutterContainer *container,
gfloat for_height,
gfloat *min_width_p,
gfloat *natural_width_p)
{
ClutterTableLayout *self = CLUTTER_TABLE_LAYOUT (layout);
ClutterTableLayoutPrivate *priv = self->priv;
gfloat total_min_width, total_pref_width;
DimensionData *columns;
gint i;
update_row_col (self, container);
if (priv->n_cols < 1)
{
*min_width_p = 0;
*natural_width_p = 0;
return;
}
calculate_table_dimensions (self, container, -1, for_height);
columns = (DimensionData *) priv->columns->data;
total_min_width = (priv->visible_cols - 1) * (float) priv->col_spacing;
total_pref_width = total_min_width;
for (i = 0; i < priv->n_cols; i++)
{
total_min_width += columns[i].min_size;
total_pref_width += columns[i].pref_size;
}
if (min_width_p)
*min_width_p = total_min_width;
if (natural_width_p)
*natural_width_p = total_pref_width;
}
static void
clutter_table_layout_get_preferred_height (ClutterLayoutManager *layout,
ClutterContainer *container,
gfloat for_width,
gfloat *min_height_p,
gfloat *natural_height_p)
{
ClutterTableLayout *self = CLUTTER_TABLE_LAYOUT (layout);
ClutterTableLayoutPrivate *priv = self->priv;
gfloat total_min_height, total_pref_height;
DimensionData *rows;
gint i;
update_row_col (self, container);
if (priv->n_rows < 1)
{
*min_height_p = 0;
*natural_height_p = 0;
return;
}
calculate_table_dimensions (self, container, for_width, -1);
rows = (DimensionData *) priv->rows->data;
total_min_height = (priv->visible_rows - 1) * (float) priv->row_spacing;
total_pref_height = total_min_height;
for (i = 0; i < self->priv->n_rows; i++)
{
total_min_height += rows[i].min_size;
total_pref_height += rows[i].pref_size;
}
if (min_height_p)
*min_height_p = total_min_height;
if (natural_height_p)
*natural_height_p = total_pref_height;
}
static gdouble
get_table_alignment_factor (ClutterTableAlignment alignment)
{
switch (alignment)
{
case CLUTTER_TABLE_ALIGNMENT_START:
return 0.0;
case CLUTTER_TABLE_ALIGNMENT_CENTER:
return 0.5;
case CLUTTER_TABLE_ALIGNMENT_END:
return 1.0;
}
return 0.0;
}
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;
GList *list, *children;
gint row_spacing, col_spacing;
gint i, table_width, table_height;
DimensionData *rows, *columns;
update_row_col (self, container);
if (priv->n_cols < 1 || priv->n_rows < 1)
return;
children = clutter_container_get_children (container);
if (children == NULL)
return;
col_spacing = (priv->col_spacing);
row_spacing = (priv->row_spacing);
table_height = (int)(box->y2 - box->y1);
table_width = (int)(box->x2 - box->x1);
calculate_table_dimensions (self, container, box->x2 - box->x1, box->y2 - box->y1);
rows = (DimensionData *) priv->rows->data;
columns = (DimensionData *) priv->columns->data;
for (list = children; list; list = g_list_next (list))
{
ClutterActor *child = list->data;
gint row, col, row_span, col_span;
gint col_width, row_height;
ClutterTableChild *meta;
ClutterActorBox childbox;
gint child_x, child_y;
gdouble x_align, y_align;
gboolean x_fill, y_fill;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
meta = (ClutterTableChild *)
clutter_layout_manager_get_child_meta (layout, priv->container, child);
/* get child properties */
col = meta->col;
row = meta->row;
row_span = meta->row_span;
col_span = meta->col_span;
x_align = get_table_alignment_factor (meta->x_align);
y_align = get_table_alignment_factor (meta->y_align);
x_fill = meta->x_fill;
y_fill = meta->y_fill;
/* 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 = 0.0f;
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 = 0.0f;
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_align_fill (child, &childbox,
x_align, y_align,
x_fill, y_fill,
flags);
/* since we call this after allocate_align_fill(), this is
* just a cheap copy
*/
clutter_actor_get_allocation_box (child, &childbox);
if (priv->use_animations && priv->is_animating)
{
ClutterActorBox *start = NULL;
ClutterActorBox end = { 0, };
gdouble p;
p = clutter_layout_manager_get_animation_progress (layout);
start = meta->last_allocation;
if (start == NULL)
{
/* if there is no allocation available then the child has just
* been added to the container; we put it in the final state
* and store its allocation for later
*/
meta->last_allocation = clutter_actor_box_copy (&childbox);
goto do_allocate;
}
end = childbox;
/* interpolate between the initial and final values */
clutter_actor_box_interpolate (start, &end, p, &childbox);
CLUTTER_NOTE (ANIMATION,
"Animate { %.1f, %.1f, %.1f, %.1f }\t"
"%.3f * { %.1f, %.1f, %.1f, %.1f }\t"
"-> { %.1f, %.1f, %.1f, %.1f }",
start->x1, start->y1,
start->x2, start->y2,
p,
childbox.x1, childbox.y1,
childbox.x2, childbox.y2,
end.x1, end.y1,
end.x2, end.y2);
}
else
{
/* store the allocation for later animations */
meta->last_allocation = clutter_actor_box_copy (&childbox);
}
do_allocate:
clutter_actor_allocate (child, &childbox, flags);
}
g_list_free (children);
}
static ClutterAlpha *
clutter_table_layout_begin_animation (ClutterLayoutManager *manager,
guint duration,
gulong easing)
{
ClutterTableLayoutPrivate *priv = CLUTTER_TABLE_LAYOUT (manager)->priv;
ClutterLayoutManagerClass *parent_class;
priv->is_animating = TRUE;
/* we want the default implementation */
parent_class = CLUTTER_LAYOUT_MANAGER_CLASS (clutter_table_layout_parent_class);
return parent_class->begin_animation (manager, duration, easing);
}
static void
clutter_table_layout_end_animation (ClutterLayoutManager *manager)
{
ClutterTableLayoutPrivate *priv = CLUTTER_TABLE_LAYOUT (manager)->priv;
ClutterLayoutManagerClass *parent_class;
priv->is_animating = FALSE;
/* we want the default implementation */
parent_class = CLUTTER_LAYOUT_MANAGER_CLASS (clutter_table_layout_parent_class);
parent_class->end_animation (manager);
}
static void
clutter_table_layout_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterTableLayout *self = CLUTTER_TABLE_LAYOUT (gobject);
switch (prop_id)
{
case PROP_COLUMN_SPACING:
clutter_table_layout_set_column_spacing (self, g_value_get_uint (value));
break;
case PROP_ROW_SPACING:
clutter_table_layout_set_row_spacing (self, g_value_get_uint (value));
break;
case PROP_USE_ANIMATIONS:
clutter_table_layout_set_use_animations (self, g_value_get_boolean (value));
break;
case PROP_EASING_MODE:
clutter_table_layout_set_easing_mode (self, g_value_get_ulong (value));
break;
case PROP_EASING_DURATION:
clutter_table_layout_set_easing_duration (self, g_value_get_uint (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_table_layout_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterTableLayoutPrivate *priv = CLUTTER_TABLE_LAYOUT (gobject)->priv;
switch (prop_id)
{
case PROP_ROW_SPACING:
g_value_set_uint (value, priv->row_spacing);
break;
case PROP_COLUMN_SPACING:
g_value_set_uint (value, priv->col_spacing);
break;
case PROP_USE_ANIMATIONS:
g_value_set_boolean (value, priv->use_animations);
break;
case PROP_EASING_MODE:
g_value_set_ulong (value, priv->easing_mode);
break;
case PROP_EASING_DURATION:
g_value_set_uint (value, priv->easing_duration);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_table_layout_finalize (GObject *gobject)
{
ClutterTableLayoutPrivate *priv = CLUTTER_TABLE_LAYOUT (gobject)->priv;
g_array_free (priv->columns, TRUE);
g_array_free (priv->rows, TRUE);
G_OBJECT_CLASS (clutter_table_layout_parent_class)->finalize (gobject);
}
static void
clutter_table_layout_class_init (ClutterTableLayoutClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
ClutterLayoutManagerClass *layout_class;
GParamSpec *pspec;
layout_class = CLUTTER_LAYOUT_MANAGER_CLASS (klass);
gobject_class->set_property = clutter_table_layout_set_property;
gobject_class->get_property = clutter_table_layout_get_property;
gobject_class->finalize = clutter_table_layout_finalize;
layout_class->get_preferred_width =
clutter_table_layout_get_preferred_width;
layout_class->get_preferred_height =
clutter_table_layout_get_preferred_height;
layout_class->allocate = clutter_table_layout_allocate;
layout_class->set_container = clutter_table_layout_set_container;
layout_class->get_child_meta_type =
clutter_table_layout_get_child_meta_type;
layout_class->begin_animation = clutter_table_layout_begin_animation;
layout_class->end_animation = clutter_table_layout_end_animation;
g_type_class_add_private (klass, sizeof (ClutterTableLayoutPrivate));
/**
* ClutterTableLayout:column-spacing:
*
* The spacing between columns of the #ClutterTableLayout, in pixels
*
* Since: 1.4
*/
pspec = g_param_spec_uint ("column-spacing",
"Column Spacing",
"Spacing between columns",
0, G_MAXUINT, 0,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_COLUMN_SPACING, pspec);
/**
* ClutterTableLayout:row-spacing:
*
* The spacing between rows of the #ClutterTableLayout, in pixels
*
* Since: 1.4
*/
pspec = g_param_spec_uint ("row-spacing",
"Row Spacing",
"Spacing between rows",
0, G_MAXUINT, 0,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_ROW_SPACING, pspec);
/**
* ClutterTableLayout:use-animations:
*
* Whether the #ClutterTableLayout should animate changes in the
* layout properties
*
* Since: 1.4
*/
pspec = g_param_spec_boolean ("use-animations",
"Use Animations",
"Whether layout changes should be animated",
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_USE_ANIMATIONS, pspec);
/**
* ClutterTableLayout:easing-mode:
*
* The easing mode for the animations, in case
* #ClutterTableLayout:use-animations is set to %TRUE
*
* The easing mode has the same semantics of #ClutterAnimation:mode: it can
* either be a value from the #ClutterAnimationMode enumeration, like
* %CLUTTER_EASE_OUT_CUBIC, or a logical id as returned by
* clutter_alpha_register_func()
*
* The default value is %CLUTTER_EASE_OUT_CUBIC
*
* Since: 1.4
*/
pspec = g_param_spec_ulong ("easing-mode",
"Easing Mode",
"The easing mode of the animations",
0, G_MAXULONG,
CLUTTER_EASE_OUT_CUBIC,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_EASING_MODE, pspec);
/**
* ClutterTableLayout:easing-duration:
*
* The duration of the animations, in case #ClutterTableLayout:use-animations
* is set to %TRUE
*
* The duration is expressed in milliseconds
*
* Since: 1.4
*/
pspec = g_param_spec_uint ("easing-duration",
"Easing Duration",
"The duration of the animations",
0, G_MAXUINT,
500,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_EASING_DURATION, pspec);
}
static void
clutter_table_layout_init (ClutterTableLayout *layout)
{
ClutterTableLayoutPrivate *priv;
layout->priv = priv = CLUTTER_TABLE_LAYOUT_GET_PRIVATE (layout);
priv->row_spacing = 0;
priv->col_spacing = 0;
priv->use_animations = FALSE;
priv->easing_mode = CLUTTER_EASE_OUT_CUBIC;
priv->easing_duration = 500;
priv->columns = g_array_new (FALSE, TRUE, sizeof (DimensionData));
priv->rows = g_array_new (FALSE, TRUE, sizeof (DimensionData));
}
/**
* clutter_table_layout_new:
*
* Creates a new #ClutterTableLayout layout manager
*
* Return value: the newly created #ClutterTableLayout
*
* Since: 1.4
*/
ClutterLayoutManager *
clutter_table_layout_new (void)
{
return g_object_new (CLUTTER_TYPE_TABLE_LAYOUT, NULL);
}
/**
* clutter_table_layout_set_column_spacing:
* @layout: a #ClutterTableLayout
* @spacing: the spacing between columns of the layout, in pixels
*
* Sets the spacing between columns of @layout
*
* Since: 1.4
*/
void
clutter_table_layout_set_column_spacing (ClutterTableLayout *layout,
guint spacing)
{
ClutterTableLayoutPrivate *priv;
g_return_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout));
priv = layout->priv;
if (priv->col_spacing != spacing)
{
ClutterLayoutManager *manager;
priv->col_spacing = spacing;
manager = CLUTTER_LAYOUT_MANAGER (layout);
if (priv->use_animations)
{
clutter_layout_manager_begin_animation (manager,
priv->easing_duration,
priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (manager);
g_object_notify (G_OBJECT (layout), "column-spacing");
}
}
/**
* clutter_table_layout_get_column_spacing:
* @layout: a #ClutterTableLayout
*
* Retrieves the spacing set using clutter_table_layout_set_column_spacing()
*
* Return value: the spacing between columns of the #ClutterTableLayout
*
* Since: 1.4
*/
guint
clutter_table_layout_get_column_spacing (ClutterTableLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout), 0);
return layout->priv->col_spacing;
}
/**
* clutter_table_layout_set_row_spacing:
* @layout: a #ClutterTableLayout
* @spacing: the spacing between rows of the layout, in pixels
*
* Sets the spacing between rows of @layout
*
* Since: 1.4
*/
void
clutter_table_layout_set_row_spacing (ClutterTableLayout *layout,
guint spacing)
{
ClutterTableLayoutPrivate *priv;
g_return_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout));
priv = layout->priv;
if (priv->row_spacing != spacing)
{
ClutterLayoutManager *manager;
priv->row_spacing = spacing;
manager = CLUTTER_LAYOUT_MANAGER (layout);
if (priv->use_animations)
{
clutter_layout_manager_begin_animation (manager,
priv->easing_duration,
priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (manager);
g_object_notify (G_OBJECT (layout), "row-spacing");
}
}
/**
* clutter_table_layout_get_row_spacing:
* @layout: a #ClutterTableLayout
*
* Retrieves the spacing set using clutter_table_layout_set_row_spacing()
*
* Return value: the spacing between rows of the #ClutterTableLayout
*
* Since: 1.4
*/
guint
clutter_table_layout_get_row_spacing (ClutterTableLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout), 0);
return layout->priv->row_spacing;
}
/**
* clutter_table_layout_pack:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor
* @row: the row the @actor should be put, or -1 to append
* @column: the column the @actor should be put, or -1 to append
*
* Packs @actor inside the #ClutterContainer associated to @layout
* at the given row and column.
*
* Since: 1.4
*/
void
clutter_table_layout_pack (ClutterTableLayout *layout,
ClutterActor *actor,
gint row,
gint column)
{
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_container_add_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 + 1;
if (column < 0)
column = priv->n_cols + 1;
table_child_set_position (CLUTTER_TABLE_CHILD (meta), row, column);
}
/**
* clutter_table_layout_set_span:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor child of @layout
* @row_span: Row span for @actor
* @column_span: Column span for @actor
*
* Sets the row and column span for @actor
* inside @layout
*
* Since: 1.4
*/
void
clutter_table_layout_set_span (ClutterTableLayout *layout,
ClutterActor *actor,
gint row_span,
gint column_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));
table_child_set_span (CLUTTER_TABLE_CHILD (meta), row_span, column_span);
}
/**
* clutter_table_layout_get_span:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor child of @layout
* @row_span: (out): return location for the row span
* @column_span: (out): return location for the col span
*
* Retrieves the row and column span for @actor as set using
* clutter_table_layout_pack() or clutter_table_layout_set_span()
*
* Since: 1.4
*/
void
clutter_table_layout_get_span (ClutterTableLayout *layout,
ClutterActor *actor,
gint *row_span,
gint *column_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 (row_span)
*row_span = CLUTTER_TABLE_CHILD (meta)->row_span;
if (column_span)
*column_span = CLUTTER_TABLE_CHILD (meta)->col_span;
}
/**
* clutter_table_layout_set_alignment:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor child of @layout
* @x_align: Horizontal alignment policy for @actor
* @y_align: Vertical alignment policy for @actor
*
* Sets the horizontal and vertical alignment policies for @actor
* inside @layout
*
* Since: 1.4
*/
void
clutter_table_layout_set_alignment (ClutterTableLayout *layout,
ClutterActor *actor,
ClutterTableAlignment x_align,
ClutterTableAlignment y_align)
{
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));
table_child_set_align (CLUTTER_TABLE_CHILD (meta), x_align, y_align);
}
/**
* clutter_table_layout_get_alignment:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor child of @layout
* @x_align: (out): return location for the horizontal alignment policy
* @y_align: (out): return location for the vertical alignment policy
*
* Retrieves the horizontal and vertical alignment policies for @actor
* as set using clutter_table_layout_pack() or
* clutter_table_layout_set_alignment().
*
* Since: 1.4
*/
void
clutter_table_layout_get_alignment (ClutterTableLayout *layout,
ClutterActor *actor,
ClutterTableAlignment *x_align,
ClutterTableAlignment *y_align)
{
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 (x_align)
*x_align = CLUTTER_TABLE_CHILD (meta)->x_align;
if (y_align)
*y_align = CLUTTER_TABLE_CHILD (meta)->y_align;
}
/**
* clutter_table_layout_set_fill:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor child of @layout
* @x_fill: whether @actor should fill horizontally the allocated space
* @y_fill: whether @actor should fill vertically the allocated space
*
* Sets the horizontal and vertical fill policies for @actor
* inside @layout
*
* Since: 1.4
*/
void
clutter_table_layout_set_fill (ClutterTableLayout *layout,
ClutterActor *actor,
gboolean x_fill,
gboolean y_fill)
{
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));
table_child_set_fill (CLUTTER_TABLE_CHILD (meta), x_fill, y_fill);
}
/**
* clutter_table_layout_get_fill:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor child of @layout
* @x_fill: (out): return location for the horizontal fill policy
* @y_fill: (out): return location for the vertical fill policy
*
* Retrieves the horizontal and vertical fill policies for @actor
* as set using clutter_table_layout_pack() or clutter_table_layout_set_fill()
*
* Since: 1.4
*/
void
clutter_table_layout_get_fill (ClutterTableLayout *layout,
ClutterActor *actor,
gboolean *x_fill,
gboolean *y_fill)
{
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 (x_fill)
*x_fill = CLUTTER_TABLE_CHILD (meta)->x_fill;
if (y_fill)
*y_fill = CLUTTER_TABLE_CHILD (meta)->y_fill;
}
/**
* clutter_table_layout_set_expand:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor child of @layout
* @x_expand: whether @actor should allocate extra space horizontally
* @y_expand: whether @actor should allocate extra space vertically
*
* Sets the horizontal and vertical expand policies for @actor
* inside @layout
*
* Since: 1.4
*/
void
clutter_table_layout_set_expand (ClutterTableLayout *layout,
ClutterActor *actor,
gboolean x_expand,
gboolean y_expand)
{
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));
table_child_set_expand (CLUTTER_TABLE_CHILD (meta), x_expand, y_expand);
}
/**
* clutter_table_layout_get_expand:
* @layout: a #ClutterTableLayout
* @actor: a #ClutterActor child of @layout
* @x_expand: (out): return location for the horizontal expand policy
* @y_expand: (out): return location for the vertical expand policy
*
* Retrieves the horizontal and vertical expand policies for @actor
* as set using clutter_table_layout_pack() or clutter_table_layout_set_expand()
*
* Since: 1.4
*/
void
clutter_table_layout_get_expand (ClutterTableLayout *layout,
ClutterActor *actor,
gboolean *x_expand,
gboolean *y_expand)
{
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 (x_expand)
*x_expand = CLUTTER_TABLE_CHILD (meta)->x_expand;
if (y_expand)
*y_expand = CLUTTER_TABLE_CHILD (meta)->y_expand;
}
/**
* clutter_table_layout_set_use_animations:
* @layout: a #ClutterTableLayout
* @animate: %TRUE if the @layout should use animations
*
* Sets whether @layout should animate changes in the layout properties
*
* The duration of the animations is controlled by
* clutter_table_layout_set_easing_duration(); the easing mode to be used
* by the animations is controlled by clutter_table_layout_set_easing_mode()
*
* Since: 1.4
*/
void
clutter_table_layout_set_use_animations (ClutterTableLayout *layout,
gboolean animate)
{
ClutterTableLayoutPrivate *priv;
g_return_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout));
priv = layout->priv;
animate = !!animate;
if (priv->use_animations != animate)
{
priv->use_animations = animate;
g_object_notify (G_OBJECT (layout), "use-animations");
}
}
/**
* clutter_table_layout_get_use_animations:
* @layout: a #ClutterTableLayout
*
* Retrieves whether @layout should animate changes in the layout properties
*
* Since clutter_table_layout_set_use_animations()
*
* Return value: %TRUE if the animations should be used, %FALSE otherwise
*
* Since: 1.4
*/
gboolean
clutter_table_layout_get_use_animations (ClutterTableLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout), FALSE);
return layout->priv->use_animations;
}
/**
* clutter_table_layout_set_easing_mode:
* @layout: a #ClutterTableLayout
* @mode: an easing mode, either from #ClutterAnimationMode or a logical id
* from clutter_alpha_register_func()
*
* Sets the easing mode to be used by @layout when animating changes in layout
* properties
*
* Use clutter_table_layout_set_use_animations() to enable and disable the
* animations
*
* Since: 1.4
*/
void
clutter_table_layout_set_easing_mode (ClutterTableLayout *layout,
gulong mode)
{
ClutterTableLayoutPrivate *priv;
g_return_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout));
priv = layout->priv;
if (priv->easing_mode != mode)
{
priv->easing_mode = mode;
g_object_notify (G_OBJECT (layout), "easing-mode");
}
}
/**
* clutter_table_layout_get_easing_mode:
* @layout: a #ClutterTableLayout
*
* Retrieves the easing mode set using clutter_table_layout_set_easing_mode()
*
* Return value: an easing mode
*
* Since: 1.4
*/
gulong
clutter_table_layout_get_easing_mode (ClutterTableLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout),
CLUTTER_EASE_OUT_CUBIC);
return layout->priv->easing_mode;
}
/**
* clutter_table_layout_set_easing_duration:
* @layout: a #ClutterTableLayout
* @msecs: the duration of the animations, in milliseconds
*
* Sets the duration of the animations used by @layout when animating changes
* in the layout properties
*
* Use clutter_table_layout_set_use_animations() to enable and disable the
* animations
*
* Since: 1.4
*/
void
clutter_table_layout_set_easing_duration (ClutterTableLayout *layout,
guint msecs)
{
ClutterTableLayoutPrivate *priv;
g_return_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout));
priv = layout->priv;
if (priv->easing_duration != msecs)
{
priv->easing_duration = msecs;
g_object_notify (G_OBJECT (layout), "easing-duration");
}
}
/**
* clutter_table_layout_get_easing_duration:
* @layout: a #ClutterTableLayout
*
* Retrieves the duration set using clutter_table_layout_set_easing_duration()
*
* Return value: the duration of the animations, in milliseconds
*
* Since: 1.4
*/
guint
clutter_table_layout_get_easing_duration (ClutterTableLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout), 500);
return layout->priv->easing_duration;
}
/**
* clutter_table_layout_get_row_count:
* @layout: A #ClutterTableLayout
*
* Retrieve the current number rows in the @layout
*
* Returns: the number of rows
*
* Since: 1.4
*/
gint
clutter_table_layout_get_row_count (ClutterTableLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout), -1);
update_row_col (layout, layout->priv->container);
return CLUTTER_TABLE_LAYOUT (layout)->priv->n_rows;
}
/**
* clutter_table_layout_get_column_count:
* @layout: A #ClutterTableLayout
*
* Retrieve the current number of columns in @layout
*
* Returns: the number of columns
*
* Since: 1.4
*/
gint
clutter_table_layout_get_column_count (ClutterTableLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_TABLE_LAYOUT (layout), -1);
update_row_col (layout, layout->priv->container);
return CLUTTER_TABLE_LAYOUT (layout)->priv->n_cols;
}
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