/* 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"

#include "gtkalias.h"

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,

					     GdkColor             *color);

#define GTK_CELL_RENDERER_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_CELL_RENDERER, GtkCellRendererPrivate))

typedef struct _GtkCellRendererPrivate GtkCellRendererPrivate;

struct _GtkCellRendererPrivate

{

  GdkColor 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_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, GTK_TYPE_OBJECT)

static void

gtk_cell_renderer_init (GtkCellRenderer *cell)

{

  cell->mode = GTK_CELL_RENDERER_MODE_INERT;

  cell->visible = TRUE;

  cell->width = -1;

  cell->height = -1;

  cell->xalign = 0.5;

  cell->yalign = 0.5;

  cell->xpad = 0;

  cell->ypad = 0;

  cell->sensitive = TRUE;

  cell->is_expander = FALSE;

  cell->is_expanded = FALSE;

  cell->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;

  /**

   * 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);

   *       

   *       /* ... create a GtkEntryCompletion */

   *       

   *       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));

  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 (object_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 = GTK_CELL_RENDERER_GET_PRIVATE (object);

  switch (param_id)

    {

    case PROP_MODE:

      g_value_set_enum (value, cell->mode);

      break;

    case PROP_VISIBLE:

      g_value_set_boolean (value, cell->visible);

      break;

    case PROP_SENSITIVE:

      g_value_set_boolean (value, cell->sensitive);

      break;

    case PROP_EDITING:

      g_value_set_boolean (value, cell->editing);

      break;

    case PROP_XALIGN:

      g_value_set_float (value, cell->xalign);

      break;

    case PROP_YALIGN:

      g_value_set_float (value, cell->yalign);

      break;

    case PROP_XPAD:

      g_value_set_uint (value, cell->xpad);

      break;

    case PROP_YPAD:

      g_value_set_uint (value, cell->ypad);

      break;

    case PROP_WIDTH:

      g_value_set_int (value, cell->width);

      break;

    case PROP_HEIGHT:

      g_value_set_int (value, cell->height);

      break;

    case PROP_IS_EXPANDER:

      g_value_set_boolean (value, cell->is_expander);

      break;

    case PROP_IS_EXPANDED:

      g_value_set_boolean (value, cell->is_expanded);

      break;

    case PROP_CELL_BACKGROUND_GDK:

      {

	GdkColor color;

	color.red = priv->cell_background.red;

	color.green = priv->cell_background.green;

	color.blue = priv->cell_background.blue;

	g_value_set_boxed (value, &color;;

      }

      break;

    case PROP_CELL_BACKGROUND_SET:

      g_value_set_boolean (value, cell->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);

  switch (param_id)

    {

    case PROP_MODE:

      cell->mode = g_value_get_enum (value);

      break;

    case PROP_VISIBLE:

      cell->visible = g_value_get_boolean (value);

      break;

    case PROP_SENSITIVE:

      cell->sensitive = g_value_get_boolean (value);

      break;

    case PROP_EDITING:

      cell->editing = g_value_get_boolean (value);

      break;

    case PROP_XALIGN:

      cell->xalign = g_value_get_float (value);

      break;

    case PROP_YALIGN:

      cell->yalign = g_value_get_float (value);

      break;

    case PROP_XPAD:

      cell->xpad = g_value_get_uint (value);

      break;

    case PROP_YPAD:

      cell->ypad = g_value_get_uint (value);

      break;

    case PROP_WIDTH:

      cell->width = g_value_get_int (value);

      break;

    case PROP_HEIGHT:

      cell->height = g_value_get_int (value);

      break;

    case PROP_IS_EXPANDER:

      cell->is_expander = g_value_get_boolean (value);

      break;

    case PROP_IS_EXPANDED:

      cell->is_expanded = g_value_get_boolean (value);

      break;

    case PROP_CELL_BACKGROUND:

      {

	GdkColor color;

	if (!g_value_get_string (value))

	  set_cell_bg_color (cell, NULL);

	else if (gdk_color_parse (g_value_get_string (value), &color))

	  set_cell_bg_color (cell, &color;;

	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:

      set_cell_bg_color (cell, g_value_get_boxed (value));

      break;

    case PROP_CELL_BACKGROUND_SET:

      cell->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,

		   GdkColor        *color)

{

  GtkCellRendererPrivate *priv = GTK_CELL_RENDERER_GET_PRIVATE (cell);

  if (color)

    {

      if (!cell->cell_background_set)

        {

	  cell->cell_background_set = TRUE;

	  g_object_notify (G_OBJECT (cell), "cell-background-set");

	}

      priv->cell_background.red = color->red;

      priv->cell_background.green = color->green;

      priv->cell_background.blue = color->blue;

    }

  else

    {

      if (cell->cell_background_set)

        {

	  cell->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: (out) (allow-none): location to return x offset of cell relative to @cell_area, or %NULL

 * @y_offset: (out) (allow-none): location to return y offset of cell relative to @cell_area, or %NULL

 * @width: (out) (allow-none): location to return width needed to render a cell, or %NULL

 * @height: (out) (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.

 **/

void

gtk_cell_renderer_get_size (GtkCellRenderer    *cell,

			    GtkWidget          *widget,

			    const GdkRectangle *cell_area,

			    gint               *x_offset,

			    gint               *y_offset,

			    gint               *width,

			    gint               *height)

{

  gint *real_width = width;

  gint *real_height = height;

  g_return_if_fail (GTK_IS_CELL_RENDERER (cell));

  g_return_if_fail (GTK_CELL_RENDERER_GET_CLASS (cell)->get_size != NULL);

  if (width && cell->width != -1)

    {

      real_width = NULL;

      *width = cell->width;

    }

  if (height && cell->height != -1)

    {

      real_height = NULL;

      *height = cell->height;

    }

  GTK_CELL_RENDERER_GET_CLASS (cell)->get_size (cell,

						widget,

						(GdkRectangle *) cell_area,

						x_offset,

						y_offset,

						real_width,

						real_height);

}

/**

 * gtk_cell_renderer_render:

 * @cell: a #GtkCellRenderer

 * @window: a #GdkDrawable 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

 * @expose_area: area that actually needs updating

 * @flags: flags that affect rendering

 *

 * Invokes the virtual render function of the #GtkCellRenderer. The three

 * passed-in rectangles are areas of @window. 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.  @expose_area is a clip rectangle.

 **/

void

gtk_cell_renderer_render (GtkCellRenderer      *cell,

			  GdkWindow            *window,

			  GtkWidget            *widget,

			  const GdkRectangle   *background_area,

			  const GdkRectangle   *cell_area,

			  const GdkRectangle   *expose_area,

			  GtkCellRendererState  flags)

{

  gboolean selected = FALSE;

  GtkCellRendererPrivate *priv = GTK_CELL_RENDERER_GET_PRIVATE (cell);

  g_return_if_fail (GTK_IS_CELL_RENDERER (cell));

  g_return_if_fail (GTK_CELL_RENDERER_GET_CLASS (cell)->render != NULL);

  selected = (flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED;

  if (cell->cell_background_set && !selected)

    {

      cairo_t *cr = gdk_cairo_create (window);

      gdk_cairo_rectangle (cr, background_area);

      gdk_cairo_set_source_color (cr, &priv->cell_background);

      cairo_fill (cr);

      cairo_destroy (cr);

    }

  GTK_CELL_RENDERER_GET_CLASS (cell)->render (cell,

					      window,

					      widget,

					      (GdkRectangle *) background_area,

					      (GdkRectangle *) cell_area,

					      (GdkRectangle *) expose_area,

					      flags);

}

/**

 * 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)

{

  g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);

  if (cell->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 none): 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)

{

  GtkCellEditable *editable;

  g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), NULL);

  if (cell->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);

  cell->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)

{

  g_return_if_fail (GTK_IS_CELL_RENDERER (cell));

  g_return_if_fail (width >= -1 && height >= -1);

  if ((width != cell->width) || (height != cell->height))

    {

      g_object_freeze_notify (G_OBJECT (cell));

      if (width != cell->width)

        {

          cell->width = width;

          g_object_notify (G_OBJECT (cell), "width");

        }

      if (height != cell->height)

        {

          cell->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: (out) (allow-none): location to fill in with the fixed width of the cell, or %NULL

 * @height: (out) (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)

{

  g_return_if_fail (GTK_IS_CELL_RENDERER (cell));

  if (width)

    *width = cell->width;

  if (height)

    *height = cell->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)

{

  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);

  if ((xalign != cell->xalign) || (yalign != cell->yalign))

    {

      g_object_freeze_notify (G_OBJECT (cell));

      if (xalign != cell->xalign)

        {

          cell->xalign = xalign;

          g_object_notify (G_OBJECT (cell), "xalign");

        }

      if (yalign != cell->yalign)

        {

          cell->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: (out) (allow-none): location to fill in with the x alignment of the cell, or %NULL

 * @yalign: (out) (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)

{

  g_return_if_fail (GTK_IS_CELL_RENDERER (cell));

  if (xalign)

    *xalign = cell->xalign;

  if (yalign)

    *yalign = cell->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)

{

  g_return_if_fail (GTK_IS_CELL_RENDERER (cell));

  g_return_if_fail (xpad >= 0 && xpad >= 0);

  if ((xpad != cell->xpad) || (ypad != cell->ypad))

    {

      g_object_freeze_notify (G_OBJECT (cell));

      if (xpad != cell->xpad)

        {

          cell->xpad = xpad;

          g_object_notify (G_OBJECT (cell), "xpad");

        }

      if (ypad != cell->ypad)

        {

          cell->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: (out) (allow-none): location to fill in with the x padding of the cell, or %NULL

 * @ypad: (out) (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)

{

  g_return_if_fail (GTK_IS_CELL_RENDERER (cell));

  if (xpad)

    *xpad = cell->xpad;

  if (ypad)

    *ypad = cell->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)

{

  g_return_if_fail (GTK_IS_CELL_RENDERER (cell));

  if (cell->visible != visible)

    {

      cell->visible = visible ? TRUE : FALSE;

      g_object_notify (G_OBJECT (cell), "visible");