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gtk2/gtk/gtkcellrenderer.c
Kristian Rietveld a28c11a27f Clip to cell_area when rendering cell content 
This fixes a GTK+ 3.0 regression.  In GTK+ 2, the render method
on GtkCellRenderer had a expose_area parameter, typically set to
cell_area.  This parameter was used for clipping cell content to be
rendered to the cell area (and thus clipping to within the focus
rectangle).  During the rendering clean up this parameter was removed
and no clipping put back into place.

Since expose_area was usually equal to cell_area anyway, it does not make
sense to reintroduce the expose_area parameter.  Instead, we do clipping at
two levels:
 - in gtk_cell_renderer_render() we clip to background_area.  We cannot
clip to cell_area here because we want to allow cell renderers to
render in the background area (e.g. background color/effect).
 - cell renderers should clip to clip_area when rendering cell
content individually (as they had to individually clip to expose_region
before).
2010-12-16 00:07:08 +01:00

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/* gtkcellrenderer.c
* Copyright (C) 2000 Red Hat, Inc. Jonathan Blandford
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gtkcellrenderer.h"
#include "gtkintl.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtktreeprivate.h"
/**
* SECTION:gtkcellrenderer
* @Short_description: An object for rendering a single cell
* @Title: GtkCellRenderer
* @See_also: #GtkCellRendererText, #GtkCellRendererPixbuf, #GtkCellRendererToggle
*
* The #GtkCellRenderer is a base class of a set of objects used for
* rendering a cell to a #cairo_t. These objects are used primarily by
* the #GtkTreeView widget, though they aren't tied to them in any
* specific way. It is worth noting that #GtkCellRenderer is not a
* #GtkWidget and cannot be treated as such.
*
* The primary use of a #GtkCellRenderer is for drawing a certain graphical
* elements on a #cairo_t. Typically, one cell renderer is used to
* draw many cells on the screen. To this extent, it isn't expected that a
* CellRenderer keep any permanent state around. Instead, any state is set
* just prior to use using #GObject<!-- -->s property system. Then, the
* cell is measured using gtk_cell_renderer_get_size(). Finally, the cell
* is rendered in the correct location using gtk_cell_renderer_render().
*
* There are a number of rules that must be followed when writing a new
* #GtkCellRenderer. First and formost, it's important that a certain set
* of properties will always yield a cell renderer of the same size,
* barring a #GtkStyle change. The #GtkCellRenderer also has a number of
* generic properties that are expected to be honored by all children.
*
* Beyond merely rendering a cell, cell renderers can optionally
* provide active user interface elements. A cell renderer can be
* <firstterm>activatable</firstterm> like #GtkCellRendererToggle,
* which toggles when it gets activated by a mouse click, or it can be
* <firstterm>editable</firstterm> like #GtkCellRendererText, which
* allows the user to edit the text using a #GtkEntry.
* To make a cell renderer activatable or editable, you have to
* implement the #GtkCellRendererClass.activate or
* #GtkCellRendererClass.start_editing virtual functions, respectively.
*/
#define DEBUG_CELL_SIZE_REQUEST 0
static void gtk_cell_renderer_init (GtkCellRenderer *cell);
static void gtk_cell_renderer_class_init (GtkCellRendererClass *class);
static void gtk_cell_renderer_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gtk_cell_renderer_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void set_cell_bg_color (GtkCellRenderer *cell,
GdkRGBA *rgba);
/* Fallback GtkCellRenderer implementation to use remaining ->get_size() implementations */
static void gtk_cell_renderer_real_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_cell_renderer_real_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_cell_renderer_real_get_preferred_height_for_width(GtkCellRenderer *cell,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height);
static void gtk_cell_renderer_real_get_preferred_width_for_height(GtkCellRenderer *cell,
GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width);
static void gtk_cell_renderer_real_get_aligned_area (GtkCellRenderer *cell,
GtkWidget *widget,
GtkCellRendererState flags,
const GdkRectangle *cell_area,
GdkRectangle *aligned_area);
struct _GtkCellRendererPrivate
{
gfloat xalign;
gfloat yalign;
gint width;
gint height;
guint16 xpad;
guint16 ypad;
guint mode : 2;
guint visible : 1;
guint is_expander : 1;
guint is_expanded : 1;
guint cell_background_set : 1;
guint sensitive : 1;
guint editing : 1;
GdkRGBA cell_background;
};
enum {
PROP_0,
PROP_MODE,
PROP_VISIBLE,
PROP_SENSITIVE,
PROP_XALIGN,
PROP_YALIGN,
PROP_XPAD,
PROP_YPAD,
PROP_WIDTH,
PROP_HEIGHT,
PROP_IS_EXPANDER,
PROP_IS_EXPANDED,
PROP_CELL_BACKGROUND,
PROP_CELL_BACKGROUND_GDK,
PROP_CELL_BACKGROUND_RGBA,
PROP_CELL_BACKGROUND_SET,
PROP_EDITING
};
/* Signal IDs */
enum {
EDITING_CANCELED,
EDITING_STARTED,
LAST_SIGNAL
};
static guint cell_renderer_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_ABSTRACT_TYPE(GtkCellRenderer, gtk_cell_renderer, G_TYPE_INITIALLY_UNOWNED)
static void
gtk_cell_renderer_init (GtkCellRenderer *cell)
{
GtkCellRendererPrivate *priv;
cell->priv = G_TYPE_INSTANCE_GET_PRIVATE (cell,
GTK_TYPE_CELL_RENDERER,
GtkCellRendererPrivate);
priv = cell->priv;
priv->mode = GTK_CELL_RENDERER_MODE_INERT;
priv->visible = TRUE;
priv->width = -1;
priv->height = -1;
priv->xalign = 0.5;
priv->yalign = 0.5;
priv->xpad = 0;
priv->ypad = 0;
priv->sensitive = TRUE;
priv->is_expander = FALSE;
priv->is_expanded = FALSE;
priv->editing = FALSE;
}
static void
gtk_cell_renderer_class_init (GtkCellRendererClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->get_property = gtk_cell_renderer_get_property;
object_class->set_property = gtk_cell_renderer_set_property;
class->render = NULL;
class->get_size = NULL;
class->get_preferred_width = gtk_cell_renderer_real_get_preferred_width;
class->get_preferred_height = gtk_cell_renderer_real_get_preferred_height;
class->get_preferred_width_for_height = gtk_cell_renderer_real_get_preferred_width_for_height;
class->get_preferred_height_for_width = gtk_cell_renderer_real_get_preferred_height_for_width;
class->get_aligned_area = gtk_cell_renderer_real_get_aligned_area;
/**
* GtkCellRenderer::editing-canceled:
* @renderer: the object which received the signal
*
* This signal gets emitted when the user cancels the process of editing a
* cell. For example, an editable cell renderer could be written to cancel
* editing when the user presses Escape.
*
* See also: gtk_cell_renderer_stop_editing().
*
* Since: 2.4
*/
cell_renderer_signals[EDITING_CANCELED] =
g_signal_new (I_("editing-canceled"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkCellRendererClass, editing_canceled),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkCellRenderer::editing-started:
* @renderer: the object which received the signal
* @editable: the #GtkCellEditable
* @path: the path identifying the edited cell
*
* This signal gets emitted when a cell starts to be edited.
* The intended use of this signal is to do special setup
* on @editable, e.g. adding a #GtkEntryCompletion or setting
* up additional columns in a #GtkComboBox.
*
* Note that GTK+ doesn't guarantee that cell renderers will
* continue to use the same kind of widget for editing in future
* releases, therefore you should check the type of @editable
* before doing any specific setup, as in the following example:
* |[
* static void
* text_editing_started (GtkCellRenderer *cell,
* GtkCellEditable *editable,
* const gchar *path,
* gpointer data)
* {
* if (GTK_IS_ENTRY (editable))
* {
* GtkEntry *entry = GTK_ENTRY (editable);
*
* /&ast; ... create a GtkEntryCompletion &ast;/
*
* gtk_entry_set_completion (entry, completion);
* }
* }
* ]|
*
* Since: 2.6
*/
cell_renderer_signals[EDITING_STARTED] =
g_signal_new (I_("editing-started"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkCellRendererClass, editing_started),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_STRING,
G_TYPE_NONE, 2,
GTK_TYPE_CELL_EDITABLE,
G_TYPE_STRING);
g_object_class_install_property (object_class,
PROP_MODE,
g_param_spec_enum ("mode",
P_("mode"),
P_("Editable mode of the CellRenderer"),
GTK_TYPE_CELL_RENDERER_MODE,
GTK_CELL_RENDERER_MODE_INERT,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_VISIBLE,
g_param_spec_boolean ("visible",
P_("visible"),
P_("Display the cell"),
TRUE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_SENSITIVE,
g_param_spec_boolean ("sensitive",
P_("Sensitive"),
P_("Display the cell sensitive"),
TRUE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_XALIGN,
g_param_spec_float ("xalign",
P_("xalign"),
P_("The x-align"),
0.0,
1.0,
0.5,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_YALIGN,
g_param_spec_float ("yalign",
P_("yalign"),
P_("The y-align"),
0.0,
1.0,
0.5,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_XPAD,
g_param_spec_uint ("xpad",
P_("xpad"),
P_("The xpad"),
0,
G_MAXUINT,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_YPAD,
g_param_spec_uint ("ypad",
P_("ypad"),
P_("The ypad"),
0,
G_MAXUINT,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_WIDTH,
g_param_spec_int ("width",
P_("width"),
P_("The fixed width"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_HEIGHT,
g_param_spec_int ("height",
P_("height"),
P_("The fixed height"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_IS_EXPANDER,
g_param_spec_boolean ("is-expander",
P_("Is Expander"),
P_("Row has children"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_IS_EXPANDED,
g_param_spec_boolean ("is-expanded",
P_("Is Expanded"),
P_("Row is an expander row, and is expanded"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_CELL_BACKGROUND,
g_param_spec_string ("cell-background",
P_("Cell background color name"),
P_("Cell background color as a string"),
NULL,
GTK_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_CELL_BACKGROUND_GDK,
g_param_spec_boxed ("cell-background-gdk",
P_("Cell background color"),
P_("Cell background color as a GdkColor"),
GDK_TYPE_COLOR,
GTK_PARAM_READWRITE));
/**
* GtkCellRenderer:cell-background-rgba:
*
* Cell background as a #GdkRGBA
*
* Since: 3.0
*/
g_object_class_install_property (object_class,
PROP_CELL_BACKGROUND_RGBA,
g_param_spec_boxed ("cell-background-rgba",
P_("Cell background RGBA color"),
P_("Cell background color as a GdkRGBA"),
GDK_TYPE_RGBA,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_EDITING,
g_param_spec_boolean ("editing",
P_("Editing"),
P_("Whether the cell renderer is currently in editing mode"),
FALSE,
GTK_PARAM_READABLE));
#define ADD_SET_PROP(propname, propval, nick, blurb) g_object_class_install_property (object_class, propval, g_param_spec_boolean (propname, nick, blurb, FALSE, GTK_PARAM_READWRITE))
ADD_SET_PROP ("cell-background-set", PROP_CELL_BACKGROUND_SET,
P_("Cell background set"),
P_("Whether this tag affects the cell background color"));
g_type_class_add_private (class, sizeof (GtkCellRendererPrivate));
}
static void
gtk_cell_renderer_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellRenderer *cell = GTK_CELL_RENDERER (object);
GtkCellRendererPrivate *priv = cell->priv;
switch (param_id)
{
case PROP_MODE:
g_value_set_enum (value, priv->mode);
break;
case PROP_VISIBLE:
g_value_set_boolean (value, priv->visible);
break;
case PROP_SENSITIVE:
g_value_set_boolean (value, priv->sensitive);
break;
case PROP_EDITING:
g_value_set_boolean (value, priv->editing);
break;
case PROP_XALIGN:
g_value_set_float (value, priv->xalign);
break;
case PROP_YALIGN:
g_value_set_float (value, priv->yalign);
break;
case PROP_XPAD:
g_value_set_uint (value, priv->xpad);
break;
case PROP_YPAD:
g_value_set_uint (value, priv->ypad);
break;
case PROP_WIDTH:
g_value_set_int (value, priv->width);
break;
case PROP_HEIGHT:
g_value_set_int (value, priv->height);
break;
case PROP_IS_EXPANDER:
g_value_set_boolean (value, priv->is_expander);
break;
case PROP_IS_EXPANDED:
g_value_set_boolean (value, priv->is_expanded);
break;
case PROP_CELL_BACKGROUND_GDK:
{
GdkColor color;
color.red = (guint16) (priv->cell_background.red * 65535);
color.green = (guint16) (priv->cell_background.green * 65535);
color.blue = (guint16) (priv->cell_background.blue * 65535);
g_value_set_boxed (value, &color);
}
break;
case PROP_CELL_BACKGROUND_RGBA:
g_value_set_boxed (value, &priv->cell_background);
break;
case PROP_CELL_BACKGROUND_SET:
g_value_set_boolean (value, priv->cell_background_set);
break;
case PROP_CELL_BACKGROUND:
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gtk_cell_renderer_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCellRenderer *cell = GTK_CELL_RENDERER (object);
GtkCellRendererPrivate *priv = cell->priv;
switch (param_id)
{
case PROP_MODE:
priv->mode = g_value_get_enum (value);
break;
case PROP_VISIBLE:
priv->visible = g_value_get_boolean (value);
break;
case PROP_SENSITIVE:
priv->sensitive = g_value_get_boolean (value);
break;
case PROP_EDITING:
priv->editing = g_value_get_boolean (value);
break;
case PROP_XALIGN:
priv->xalign = g_value_get_float (value);
break;
case PROP_YALIGN:
priv->yalign = g_value_get_float (value);
break;
case PROP_XPAD:
priv->xpad = g_value_get_uint (value);
break;
case PROP_YPAD:
priv->ypad = g_value_get_uint (value);
break;
case PROP_WIDTH:
priv->width = g_value_get_int (value);
break;
case PROP_HEIGHT:
priv->height = g_value_get_int (value);
break;
case PROP_IS_EXPANDER:
priv->is_expander = g_value_get_boolean (value);
break;
case PROP_IS_EXPANDED:
priv->is_expanded = g_value_get_boolean (value);
break;
case PROP_CELL_BACKGROUND:
{
GdkRGBA rgba;
if (!g_value_get_string (value))
set_cell_bg_color (cell, NULL);
else if (gdk_rgba_parse (&rgba, g_value_get_string (value)))
set_cell_bg_color (cell, &rgba);
else
g_warning ("Don't know color `%s'", g_value_get_string (value));
g_object_notify (object, "cell-background-gdk");
}
break;
case PROP_CELL_BACKGROUND_GDK:
{
GdkColor *color;
color = g_value_get_boxed (value);
if (color)
{
GdkRGBA rgba;
rgba.red = color->red / 65535.;
rgba.green = color->green / 65535.;
rgba.blue = color->blue / 65535.;
rgba.alpha = 1;
set_cell_bg_color (cell, &rgba);
}
else
{
set_cell_bg_color (cell, NULL);
}
}
break;
case PROP_CELL_BACKGROUND_RGBA:
set_cell_bg_color (cell, g_value_get_boxed (value));
break;
case PROP_CELL_BACKGROUND_SET:
priv->cell_background_set = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
set_cell_bg_color (GtkCellRenderer *cell,
GdkRGBA *rgba)
{
GtkCellRendererPrivate *priv = cell->priv;
if (rgba)
{
if (!priv->cell_background_set)
{
priv->cell_background_set = TRUE;
g_object_notify (G_OBJECT (cell), "cell-background-set");
}
priv->cell_background = *rgba;
}
else
{
if (priv->cell_background_set)
{
priv->cell_background_set = FALSE;
g_object_notify (G_OBJECT (cell), "cell-background-set");
}
}
}
/**
* gtk_cell_renderer_get_size:
* @cell: a #GtkCellRenderer
* @widget: the widget the renderer is rendering to
* @cell_area: (allow-none): The area a cell will be allocated, or %NULL
* @x_offset: (allow-none): location to return x offset of cell relative to @cell_area, or %NULL
* @y_offset: (allow-none): location to return y offset of cell relative to @cell_area, or %NULL
* @width: (allow-none): location to return width needed to render a cell, or %NULL
* @height: (allow-none): location to return height needed to render a cell, or %NULL
*
* Obtains the width and height needed to render the cell. Used by view
* widgets to determine the appropriate size for the cell_area passed to
* gtk_cell_renderer_render(). If @cell_area is not %NULL, fills in the
* x and y offsets (if set) of the cell relative to this location.
*
* Please note that the values set in @width and @height, as well as those
* in @x_offset and @y_offset are inclusive of the xpad and ypad properties.
*
*
* Deprecated: 3.0: Use gtk_cell_renderer_get_preferred_size() instead.
**/
void
gtk_cell_renderer_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
const GdkRectangle *cell_area,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height)
{
GtkRequisition request;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
gtk_cell_renderer_get_preferred_size (cell, widget, &request, NULL);
if (width)
*width = request.width;
if (height)
*height = request.height;
if (cell_area)
_gtk_cell_renderer_calc_offset (cell, cell_area, gtk_widget_get_direction (widget),
request.width, request.height, x_offset, y_offset);
}
/**
* gtk_cell_renderer_render:
* @cell: a #GtkCellRenderer
* @cr: a cairo context to draw to
* @widget: the widget owning @window
* @background_area: entire cell area (including tree expanders and maybe
* padding on the sides)
* @cell_area: area normally rendered by a cell renderer
* @flags: flags that affect rendering
*
* Invokes the virtual render function of the #GtkCellRenderer. The three
* passed-in rectangles are areas in @cr. Most renderers will draw within
* @cell_area; the xalign, yalign, xpad, and ypad fields of the #GtkCellRenderer
* should be honored with respect to @cell_area. @background_area includes the
* blank space around the cell, and also the area containing the tree expander;
* so the @background_area rectangles for all cells tile to cover the entire
* @window.
**/
void
gtk_cell_renderer_render (GtkCellRenderer *cell,
cairo_t *cr,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
gboolean selected = FALSE;
GtkCellRendererPrivate *priv = cell->priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_CELL_RENDERER_GET_CLASS (cell)->render != NULL);
g_return_if_fail (cr != NULL);
selected = (flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED;
cairo_save (cr);
if (priv->cell_background_set && !selected)
{
gdk_cairo_rectangle (cr, background_area);
gdk_cairo_set_source_rgba (cr, &priv->cell_background);
cairo_fill (cr);
}
gdk_cairo_rectangle (cr, background_area);
cairo_clip (cr);
GTK_CELL_RENDERER_GET_CLASS (cell)->render (cell,
cr,
widget,
background_area,
cell_area,
flags);
cairo_restore (cr);
}
/**
* gtk_cell_renderer_activate:
* @cell: a #GtkCellRenderer
* @event: a #GdkEvent
* @widget: widget that received the event
* @path: widget-dependent string representation of the event location;
* e.g. for #GtkTreeView, a string representation of #GtkTreePath
* @background_area: background area as passed to gtk_cell_renderer_render()
* @cell_area: cell area as passed to gtk_cell_renderer_render()
* @flags: render flags
*
* Passes an activate event to the cell renderer for possible processing.
* Some cell renderers may use events; for example, #GtkCellRendererToggle
* toggles when it gets a mouse click.
*
* Return value: %TRUE if the event was consumed/handled
**/
gboolean
gtk_cell_renderer_activate (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererPrivate *priv;
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
priv = cell->priv;
if (priv->mode != GTK_CELL_RENDERER_MODE_ACTIVATABLE)
return FALSE;
if (GTK_CELL_RENDERER_GET_CLASS (cell)->activate == NULL)
return FALSE;
return GTK_CELL_RENDERER_GET_CLASS (cell)->activate (cell,
event,
widget,
path,
(GdkRectangle *) background_area,
(GdkRectangle *) cell_area,
flags);
}
/**
* gtk_cell_renderer_start_editing:
* @cell: a #GtkCellRenderer
* @event: a #GdkEvent
* @widget: widget that received the event
* @path: widget-dependent string representation of the event location;
* e.g. for #GtkTreeView, a string representation of #GtkTreePath
* @background_area: background area as passed to gtk_cell_renderer_render()
* @cell_area: cell area as passed to gtk_cell_renderer_render()
* @flags: render flags
*
* Passes an activate event to the cell renderer for possible processing.
*
* Return value: (transfer full): A new #GtkCellEditable, or %NULL
**/
GtkCellEditable *
gtk_cell_renderer_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererPrivate *priv;
GtkCellEditable *editable;
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), NULL);
priv = cell->priv;
if (priv->mode != GTK_CELL_RENDERER_MODE_EDITABLE)
return NULL;
if (GTK_CELL_RENDERER_GET_CLASS (cell)->start_editing == NULL)
return NULL;
editable = GTK_CELL_RENDERER_GET_CLASS (cell)->start_editing (cell,
event,
widget,
path,
(GdkRectangle *) background_area,
(GdkRectangle *) cell_area,
flags);
g_signal_emit (cell,
cell_renderer_signals[EDITING_STARTED], 0,
editable, path);
priv->editing = TRUE;
return editable;
}
/**
* gtk_cell_renderer_set_fixed_size:
* @cell: A #GtkCellRenderer
* @width: the width of the cell renderer, or -1
* @height: the height of the cell renderer, or -1
*
* Sets the renderer size to be explicit, independent of the properties set.
**/
void
gtk_cell_renderer_set_fixed_size (GtkCellRenderer *cell,
gint width,
gint height)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (width >= -1 && height >= -1);
priv = cell->priv;
if ((width != priv->width) || (height != priv->height))
{
g_object_freeze_notify (G_OBJECT (cell));
if (width != priv->width)
{
priv->width = width;
g_object_notify (G_OBJECT (cell), "width");
}
if (height != priv->height)
{
priv->height = height;
g_object_notify (G_OBJECT (cell), "height");
}
g_object_thaw_notify (G_OBJECT (cell));
}
}
/**
* gtk_cell_renderer_get_fixed_size:
* @cell: A #GtkCellRenderer
* @width: (allow-none): location to fill in with the fixed width of the cell, or %NULL
* @height: (allow-none): location to fill in with the fixed height of the cell, or %NULL
*
* Fills in @width and @height with the appropriate size of @cell.
**/
void
gtk_cell_renderer_get_fixed_size (GtkCellRenderer *cell,
gint *width,
gint *height)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (width)
*width = priv->width;
if (height)
*height = priv->height;
}
/**
* gtk_cell_renderer_set_alignment:
* @cell: A #GtkCellRenderer
* @xalign: the x alignment of the cell renderer
* @yalign: the y alignment of the cell renderer
*
* Sets the renderer's alignment within its available space.
*
* Since: 2.18
**/
void
gtk_cell_renderer_set_alignment (GtkCellRenderer *cell,
gfloat xalign,
gfloat yalign)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (xalign >= 0.0 && xalign <= 1.0);
g_return_if_fail (yalign >= 0.0 && yalign <= 1.0);
priv = cell->priv;
if ((xalign != priv->xalign) || (yalign != priv->yalign))
{
g_object_freeze_notify (G_OBJECT (cell));
if (xalign != priv->xalign)
{
priv->xalign = xalign;
g_object_notify (G_OBJECT (cell), "xalign");
}
if (yalign != priv->yalign)
{
priv->yalign = yalign;
g_object_notify (G_OBJECT (cell), "yalign");
}
g_object_thaw_notify (G_OBJECT (cell));
}
}
/**
* gtk_cell_renderer_get_alignment:
* @cell: A #GtkCellRenderer
* @xalign: (allow-none): location to fill in with the x alignment of the cell, or %NULL
* @yalign: (allow-none): location to fill in with the y alignment of the cell, or %NULL
*
* Fills in @xalign and @yalign with the appropriate values of @cell.
*
* Since: 2.18
**/
void
gtk_cell_renderer_get_alignment (GtkCellRenderer *cell,
gfloat *xalign,
gfloat *yalign)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (xalign)
*xalign = priv->xalign;
if (yalign)
*yalign = priv->yalign;
}
/**
* gtk_cell_renderer_set_padding:
* @cell: A #GtkCellRenderer
* @xpad: the x padding of the cell renderer
* @ypad: the y padding of the cell renderer
*
* Sets the renderer's padding.
*
* Since: 2.18
**/
void
gtk_cell_renderer_set_padding (GtkCellRenderer *cell,
gint xpad,
gint ypad)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (xpad >= 0 && xpad >= 0);
priv = cell->priv;
if ((xpad != priv->xpad) || (ypad != priv->ypad))
{
g_object_freeze_notify (G_OBJECT (cell));
if (xpad != priv->xpad)
{
priv->xpad = xpad;
g_object_notify (G_OBJECT (cell), "xpad");
}
if (ypad != priv->ypad)
{
priv->ypad = ypad;
g_object_notify (G_OBJECT (cell), "ypad");
}
g_object_thaw_notify (G_OBJECT (cell));
}
}
/**
* gtk_cell_renderer_get_padding:
* @cell: A #GtkCellRenderer
* @xpad: (allow-none): location to fill in with the x padding of the cell, or %NULL
* @ypad: (allow-none): location to fill in with the y padding of the cell, or %NULL
*
* Fills in @xpad and @ypad with the appropriate values of @cell.
*
* Since: 2.18
**/
void
gtk_cell_renderer_get_padding (GtkCellRenderer *cell,
gint *xpad,
gint *ypad)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (xpad)
*xpad = priv->xpad;
if (ypad)
*ypad = priv->ypad;
}
/**
* gtk_cell_renderer_set_visible:
* @cell: A #GtkCellRenderer
* @visible: the visibility of the cell
*
* Sets the cell renderer's visibility.
*
* Since: 2.18
**/
void
gtk_cell_renderer_set_visible (GtkCellRenderer *cell,
gboolean visible)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (priv->visible != visible)
{
priv->visible = visible ? TRUE : FALSE;
g_object_notify (G_OBJECT (cell), "visible");
}
}
/**
* gtk_cell_renderer_get_visible:
* @cell: A #GtkCellRenderer
*
* Returns the cell renderer's visibility.
*
* Returns: %TRUE if the cell renderer is visible
*
* Since: 2.18
*/
gboolean
gtk_cell_renderer_get_visible (GtkCellRenderer *cell)
{
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
return cell->priv->visible;
}
/**
* gtk_cell_renderer_set_sensitive:
* @cell: A #GtkCellRenderer
* @sensitive: the sensitivity of the cell
*
* Sets the cell renderer's sensitivity.
*
* Since: 2.18
**/
void
gtk_cell_renderer_set_sensitive (GtkCellRenderer *cell,
gboolean sensitive)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (priv->sensitive != sensitive)
{
priv->sensitive = sensitive ? TRUE : FALSE;
g_object_notify (G_OBJECT (cell), "sensitive");
}
}
/**
* gtk_cell_renderer_get_sensitive:
* @cell: A #GtkCellRenderer
*
* Returns the cell renderer's sensitivity.
*
* Returns: %TRUE if the cell renderer is sensitive
*
* Since: 2.18
*/
gboolean
gtk_cell_renderer_get_sensitive (GtkCellRenderer *cell)
{
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
return cell->priv->sensitive;
}
/**
* gtk_cell_renderer_is_activatable:
* @cell: A #GtkCellRenderer
*
* Checks whether the cell renderer can do something when activated.
*
* Returns: %TRUE if the cell renderer can do anything when activated.
*
* Since: 3.0
*/
gboolean
gtk_cell_renderer_is_activatable (GtkCellRenderer *cell)
{
GtkCellRendererPrivate *priv;
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
priv = cell->priv;
return (cell->priv->visible &&
(cell->priv->mode == GTK_CELL_RENDERER_MODE_EDITABLE ||
cell->priv->mode == GTK_CELL_RENDERER_MODE_ACTIVATABLE));
}
/**
* gtk_cell_renderer_stop_editing:
* @cell: A #GtkCellRenderer
* @canceled: %TRUE if the editing has been canceled
*
* Informs the cell renderer that the editing is stopped.
* If @canceled is %TRUE, the cell renderer will emit the
* #GtkCellRenderer::editing-canceled signal.
*
* This function should be called by cell renderer implementations
* in response to the #GtkCellEditable::editing-done signal of
* #GtkCellEditable.
*
* Since: 2.6
**/
void
gtk_cell_renderer_stop_editing (GtkCellRenderer *cell,
gboolean canceled)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (priv->editing)
{
priv->editing = FALSE;
if (canceled)
g_signal_emit (cell, cell_renderer_signals[EDITING_CANCELED], 0);
}
}
static void
gtk_cell_renderer_real_get_preferred_size (GtkCellRenderer *cell,
GtkWidget *widget,
GtkOrientation orientation,
gint *minimum_size,
gint *natural_size)
{
GtkRequisition min_req;
/* Fallback on the old API to get the size. */
if (GTK_CELL_RENDERER_GET_CLASS (cell)->get_size)
GTK_CELL_RENDERER_GET_CLASS (cell)->get_size (GTK_CELL_RENDERER (cell), widget, NULL, NULL, NULL,
&min_req.width, &min_req.height);
else
{
min_req.width = 0;
min_req.height = 0;
}
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (minimum_size)
*minimum_size = min_req.width;
if (natural_size)
*natural_size = min_req.width;
}
else
{
if (minimum_size)
*minimum_size = min_req.height;
if (natural_size)
*natural_size = min_req.height;
}
}
static void
gtk_cell_renderer_real_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_cell_renderer_real_get_preferred_size (cell, widget, GTK_ORIENTATION_HORIZONTAL,
minimum_size, natural_size);
}
static void
gtk_cell_renderer_real_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_cell_renderer_real_get_preferred_size (cell, widget, GTK_ORIENTATION_VERTICAL,
minimum_size, natural_size);
}
static void
gtk_cell_renderer_real_get_preferred_height_for_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height)
{
/* Fall back on the height reported from ->get_size() */
gtk_cell_renderer_get_preferred_height (cell, widget, minimum_height, natural_height);
}
static void
gtk_cell_renderer_real_get_preferred_width_for_height (GtkCellRenderer *cell,
GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width)
{
/* Fall back on the width reported from ->get_size() */
gtk_cell_renderer_get_preferred_width (cell, widget, minimum_width, natural_width);
}
/* Default implementation assumes that a cell renderer will never use more
* space than it's natural size (this is fine for toggles and pixbufs etc
* but needs to be overridden from wrapping/ellipsizing text renderers) */
static void
gtk_cell_renderer_real_get_aligned_area (GtkCellRenderer *cell,
GtkWidget *widget,
GtkCellRendererState flags,
const GdkRectangle *cell_area,
GdkRectangle *aligned_area)
{
gint opposite_size, x_offset, y_offset;
gint natural_size;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (cell_area != NULL);
g_return_if_fail (aligned_area != NULL);
*aligned_area = *cell_area;
/* Trim up the aligned size */
if (gtk_cell_renderer_get_request_mode (cell) == GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
{
gtk_cell_renderer_get_preferred_width (cell, widget,
NULL, &natural_size);
aligned_area->width = MIN (aligned_area->width, natural_size);
gtk_cell_renderer_get_preferred_height_for_width (cell, widget,
aligned_area->width,
NULL, &opposite_size);
aligned_area->height = MIN (opposite_size, aligned_area->height);
}
else
{
gtk_cell_renderer_get_preferred_height (cell, widget,
NULL, &natural_size);
aligned_area->height = MIN (aligned_area->width, natural_size);
gtk_cell_renderer_get_preferred_width_for_height (cell, widget,
aligned_area->height,
NULL, &opposite_size);
aligned_area->width = MIN (opposite_size, aligned_area->width);
}
/* offset the cell position */
_gtk_cell_renderer_calc_offset (cell, cell_area,
gtk_widget_get_direction (widget),
aligned_area->width,
aligned_area->height,
&x_offset, &y_offset);
aligned_area->x += x_offset;
aligned_area->y += y_offset;
}
/* An internal convenience function for some containers to peek at the
* cell alignment in a target allocation (used to draw focus and align
* cells in the icon view).
*
* Note this is only a trivial 'align * (allocation - request)' operation.
*/
void
_gtk_cell_renderer_calc_offset (GtkCellRenderer *cell,
const GdkRectangle *cell_area,
GtkTextDirection direction,
gint width,
gint height,
gint *x_offset,
gint *y_offset)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (cell_area != NULL);
g_return_if_fail (x_offset || y_offset);
priv = cell->priv;
if (x_offset)
{
*x_offset = (((direction == GTK_TEXT_DIR_RTL) ?
(1.0 - priv->xalign) : priv->xalign) *
(cell_area->width - width));
*x_offset = MAX (*x_offset, 0);
}
if (y_offset)
{
*y_offset = (priv->yalign *
(cell_area->height - height));
*y_offset = MAX (*y_offset, 0);
}
}
/**
* gtk_cell_renderer_get_request_mode:
* @cell: a #GtkCellRenderer instance
*
* Gets whether the cell renderer prefers a height-for-width layout
* or a width-for-height layout.
*
* Returns: The #GtkSizeRequestMode preferred by this renderer.
*
* Since: 3.0
*/
GtkSizeRequestMode
gtk_cell_renderer_get_request_mode (GtkCellRenderer *cell)
{
GtkCellRendererClass *klass;
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
if (klass->get_request_mode)
return klass->get_request_mode (cell);
/* By default cell renderers are height-for-width. */
return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
}
/**
* gtk_cell_renderer_get_preferred_width:
* @cell: a #GtkCellRenderer instance
* @widget: the #GtkWidget this cell will be rendering to
* @minimum_size: location to store the minimum size, or %NULL
* @natural_size: location to store the natural size, or %NULL
*
* Retreives a renderer's natural size when rendered to @widget.
*
* Since: 3.0
*/
void
gtk_cell_renderer_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
GtkCellRendererClass *klass;
gint width;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (NULL != minimum_size || NULL != natural_size);
gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), &width, NULL);
if (width < 0)
{
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_preferred_width (cell, widget, minimum_size, natural_size);
}
else
{
if (minimum_size)
*minimum_size = width;
if (natural_size)
*natural_size = width;
}
#if DEBUG_CELL_SIZE_REQUEST
g_message ("%s returning minimum width: %d and natural width: %d",
G_OBJECT_TYPE_NAME (cell),
minimum_size ? *minimum_size : 20000,
natural_size ? *natural_size : 20000);
#endif
}
/**
* gtk_cell_renderer_get_preferred_height:
* @cell: a #GtkCellRenderer instance
* @widget: the #GtkWidget this cell will be rendering to
* @minimum_size: location to store the minimum size, or %NULL
* @natural_size: location to store the natural size, or %NULL
*
* Retreives a renderer's natural size when rendered to @widget.
*
* Since: 3.0
*/
void
gtk_cell_renderer_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
GtkCellRendererClass *klass;
gint height;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (NULL != minimum_size || NULL != natural_size);
gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), NULL, &height);
if (height < 0)
{
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_preferred_height (cell, widget, minimum_size, natural_size);
}
else
{
if (minimum_size)
*minimum_size = height;
if (natural_size)
*natural_size = height;
}
#if DEBUG_CELL_SIZE_REQUEST
g_message ("%s returning minimum height: %d and natural height: %d",
G_OBJECT_TYPE_NAME (cell),
minimum_size ? *minimum_size : 20000,
natural_size ? *natural_size : 20000);
#endif
}
/**
* gtk_cell_renderer_get_preferred_width_for_height:
* @cell: a #GtkCellRenderer instance
* @widget: the #GtkWidget this cell will be rendering to
* @height: the size which is available for allocation
* @minimum_width: location for storing the minimum size, or %NULL
* @natural_width: location for storing the preferred size, or %NULL
*
* Retreives a cell renderers's minimum and natural width if it were rendered to
* @widget with the specified @height.
*
* Since: 3.0
*/
void
gtk_cell_renderer_get_preferred_width_for_height (GtkCellRenderer *cell,
GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width)
{
GtkCellRendererClass *klass;
gint width;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (NULL != minimum_width || NULL != natural_width);
gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), &width, NULL);
if (width < 0)
{
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_preferred_width_for_height (cell, widget, height, minimum_width, natural_width);
}
else
{
if (minimum_width)
*minimum_width = width;
if (natural_width)
*natural_width = width;
}
#if DEBUG_CELL_SIZE_REQUEST
g_message ("%s width for height: %d is minimum %d and natural: %d",
G_OBJECT_TYPE_NAME (cell), height,
minimum_width ? *minimum_width : 20000,
natural_width ? *natural_width : 20000);
#endif
}
/**
* gtk_cell_renderer_get_preferred_height_for_width:
* @cell: a #GtkCellRenderer instance
* @widget: the #GtkWidget this cell will be rendering to
* @width: the size which is available for allocation
* @minimum_height: location for storing the minimum size, or %NULL
* @natural_height: location for storing the preferred size, or %NULL
*
* Retreives a cell renderers's minimum and natural height if it were rendered to
* @widget with the specified @width.
*
* Since: 3.0
*/
void
gtk_cell_renderer_get_preferred_height_for_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height)
{
GtkCellRendererClass *klass;
gint height;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (NULL != minimum_height || NULL != natural_height);
gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), NULL, &height);
if (height < 0)
{
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_preferred_height_for_width (cell, widget, width, minimum_height, natural_height);
}
else
{
if (minimum_height)
*minimum_height = height;
if (natural_height)
*natural_height = height;
}
#if DEBUG_CELL_SIZE_REQUEST
g_message ("%s height for width: %d is minimum %d and natural: %d",
G_OBJECT_TYPE_NAME (cell), width,
minimum_height ? *minimum_height : 20000,
natural_height ? *natural_height : 20000);
#endif
}
/**
* gtk_cell_renderer_get_preferred_size:
* @cell: a #GtkCellRenderer instance
* @widget: the #GtkWidget this cell will be rendering to
* @request_natural: Whether to base the contextual request off of the
* base natural or the base minimum
* @minimum_size: (out) (allow-none): location for storing the minimum size, or %NULL
* @natural_size: (out) (allow-none): location for storing the natural size, or %NULL
*
* Retrieves the minimum and natural size of a cell taking
* into account the widget's preference for height-for-width management.
*
* If request_natural is specified, the non-contextual natural value will
* be used to make the contextual request; otherwise the minimum will be used.
*
* Since: 3.0
*/
void
gtk_cell_renderer_get_preferred_size (GtkCellRenderer *cell,
GtkWidget *widget,
GtkRequisition *minimum_size,
GtkRequisition *natural_size)
{
gint min_width, nat_width;
gint min_height, nat_height;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
if (gtk_cell_renderer_get_request_mode (cell) == GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
{
gtk_cell_renderer_get_preferred_width (cell, widget, &min_width, &nat_width);
if (minimum_size)
{
minimum_size->width = min_width;
gtk_cell_renderer_get_preferred_height_for_width (cell, widget, min_width,
&minimum_size->height, NULL);
}
if (natural_size)
{
natural_size->width = nat_width;
gtk_cell_renderer_get_preferred_height_for_width (cell, widget, nat_width,
NULL, &natural_size->height);
}
}
else /* GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT */
{
gtk_cell_renderer_get_preferred_height (cell, widget, &min_height, &nat_height);
if (minimum_size)
{
minimum_size->height = min_height;
gtk_cell_renderer_get_preferred_width_for_height (cell, widget, min_height,
&minimum_size->width, NULL);
}
if (natural_size)
{
natural_size->height = nat_height;
gtk_cell_renderer_get_preferred_width_for_height (cell, widget, nat_height,
NULL, &natural_size->width);
}
}
}
/**
* gtk_cell_renderer_get_aligned_area:
* @cell: a #GtkCellRenderer instance
* @widget: the #GtkWidget this cell will be rendering to
* @flags: render flags
* @cell_area: cell area which would be passed to gtk_cell_renderer_render()
* @aligned_area: the return location for the space inside @cell_area that
* would acually be used to render.
*
* Gets the aligned area used by @cell inside @cell_area. Used for finding
* the appropriate edit and focus rectangle.
*
* Since: 3.0
*/
void
gtk_cell_renderer_get_aligned_area (GtkCellRenderer *cell,
GtkWidget *widget,
GtkCellRendererState flags,
const GdkRectangle *cell_area,
GdkRectangle *aligned_area)
{
GtkCellRendererClass *klass;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (cell_area != NULL);
g_return_if_fail (aligned_area != NULL);
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_aligned_area (cell, widget, flags, cell_area, aligned_area);
}
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