/* gtkcellrenderertoggle.c

 * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>

 *

 * 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 <stdlib.h>

#include "gtkcellrenderertoggle.h"

#include "gtkintl.h"

#include "gtkmarshalers.h"

#include "gtkprivate.h"

#include "gtktreeprivate.h"

#include "gtkalias.h"

static void gtk_cell_renderer_toggle_get_property  (GObject                    *object,

						    guint                       param_id,

						    GValue                     *value,

						    GParamSpec                 *pspec);

static void gtk_cell_renderer_toggle_set_property  (GObject                    *object,

						    guint                       param_id,

						    const GValue               *value,

						    GParamSpec                 *pspec);

static void gtk_cell_renderer_toggle_get_size   (GtkCellRenderer            *cell,

						 GtkWidget                  *widget,

 						 GdkRectangle               *cell_area,

						 gint                       *x_offset,

						 gint                       *y_offset,

						 gint                       *width,

						 gint                       *height);

static void gtk_cell_renderer_toggle_render     (GtkCellRenderer            *cell,

						 GdkWindow                  *window,

						 GtkWidget                  *widget,

						 GdkRectangle               *background_area,

						 GdkRectangle               *cell_area,

						 GdkRectangle               *expose_area,

						 GtkCellRendererState        flags);

static gboolean gtk_cell_renderer_toggle_activate  (GtkCellRenderer            *cell,

						    GdkEvent                   *event,

						    GtkWidget                  *widget,

						    const gchar                *path,

						    GdkRectangle               *background_area,

						    GdkRectangle               *cell_area,

						    GtkCellRendererState        flags);

enum {

  TOGGLED,

  LAST_SIGNAL

};

enum {

  PROP_0,

  PROP_ACTIVATABLE,

  PROP_ACTIVE,

  PROP_RADIO,

  PROP_INCONSISTENT,

  PROP_INDICATOR_SIZE

};

#define TOGGLE_WIDTH 13

static guint toggle_cell_signals[LAST_SIGNAL] = { 0 };

#define GTK_CELL_RENDERER_TOGGLE_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_CELL_RENDERER_TOGGLE, GtkCellRendererTogglePrivate))

typedef struct _GtkCellRendererTogglePrivate GtkCellRendererTogglePrivate;

struct _GtkCellRendererTogglePrivate

{

  gint indicator_size;

  guint inconsistent : 1;

};

G_DEFINE_TYPE (GtkCellRendererToggle, gtk_cell_renderer_toggle, GTK_TYPE_CELL_RENDERER)

static void

gtk_cell_renderer_toggle_init (GtkCellRendererToggle *celltoggle)

{

  GtkCellRendererTogglePrivate *priv;

  priv = GTK_CELL_RENDERER_TOGGLE_GET_PRIVATE (celltoggle);

  celltoggle->activatable = TRUE;

  celltoggle->active = FALSE;

  celltoggle->radio = FALSE;

  GTK_CELL_RENDERER (celltoggle)->mode = GTK_CELL_RENDERER_MODE_ACTIVATABLE;

  GTK_CELL_RENDERER (celltoggle)->xpad = 2;

  GTK_CELL_RENDERER (celltoggle)->ypad = 2;

  priv->indicator_size = TOGGLE_WIDTH;

  priv->inconsistent = FALSE;

}

static void

gtk_cell_renderer_toggle_class_init (GtkCellRendererToggleClass *class)

{

  GObjectClass *object_class = G_OBJECT_CLASS (class);

  GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);

  object_class->get_property = gtk_cell_renderer_toggle_get_property;

  object_class->set_property = gtk_cell_renderer_toggle_set_property;

  cell_class->get_size = gtk_cell_renderer_toggle_get_size;

  cell_class->render = gtk_cell_renderer_toggle_render;

  cell_class->activate = gtk_cell_renderer_toggle_activate;

  g_object_class_install_property (object_class,

				   PROP_ACTIVE,

				   g_param_spec_boolean ("active",

							 P_("Toggle state"),

							 P_("The toggle state of the button"),

							 FALSE,

							 GTK_PARAM_READWRITE));

  g_object_class_install_property (object_class,

		                   PROP_INCONSISTENT,

				   g_param_spec_boolean ("inconsistent",

					                 P_("Inconsistent state"),

							 P_("The inconsistent state of the button"),

							 FALSE,

							 GTK_PARAM_READWRITE));

  g_object_class_install_property (object_class,

				   PROP_ACTIVATABLE,

				   g_param_spec_boolean ("activatable",

							 P_("Activatable"),

							 P_("The toggle button can be activated"),

							 TRUE,

							 GTK_PARAM_READWRITE));

  g_object_class_install_property (object_class,

				   PROP_RADIO,

				   g_param_spec_boolean ("radio",

							 P_("Radio state"),

							 P_("Draw the toggle button as a radio button"),

							 FALSE,

							 GTK_PARAM_READWRITE));

  g_object_class_install_property (object_class,

				   PROP_INDICATOR_SIZE,

				   g_param_spec_int ("indicator-size",

						     P_("Indicator size"),

						     P_("Size of check or radio indicator"),

						     0,

						     G_MAXINT,

						     TOGGLE_WIDTH,

						     GTK_PARAM_READWRITE));

  /**

   * GtkCellRendererToggle::toggled:

   * @cell_renderer: the object which received the signal

   * @path: string representation of #GtkTreePath describing the 

   *        event location

   *

   * The ::toggled signal is emitted when the cell is toggled. 

   **/

  toggle_cell_signals[TOGGLED] =

    g_signal_new (I_("toggled"),

		  G_OBJECT_CLASS_TYPE (object_class),

		  G_SIGNAL_RUN_LAST,

		  G_STRUCT_OFFSET (GtkCellRendererToggleClass, toggled),

		  NULL, NULL,

		  _gtk_marshal_VOID__STRING,

		  G_TYPE_NONE, 1,

		  G_TYPE_STRING);

  g_type_class_add_private (object_class, sizeof (GtkCellRendererTogglePrivate));

}

static void

gtk_cell_renderer_toggle_get_property (GObject     *object,

				       guint        param_id,

				       GValue      *value,

				       GParamSpec  *pspec)

{

  GtkCellRendererToggle *celltoggle = GTK_CELL_RENDERER_TOGGLE (object);

  GtkCellRendererTogglePrivate *priv;

  priv = GTK_CELL_RENDERER_TOGGLE_GET_PRIVATE (object);

  switch (param_id)

    {

    case PROP_ACTIVE:

      g_value_set_boolean (value, celltoggle->active);

      break;

    case PROP_INCONSISTENT:

      g_value_set_boolean (value, priv->inconsistent);

      break;

    case PROP_ACTIVATABLE:

      g_value_set_boolean (value, celltoggle->activatable);

      break;

    case PROP_RADIO:

      g_value_set_boolean (value, celltoggle->radio);

      break;

    case PROP_INDICATOR_SIZE:

      g_value_set_int (value, priv->indicator_size);

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);

      break;

    }

}

static void

gtk_cell_renderer_toggle_set_property (GObject      *object,

				       guint         param_id,

				       const GValue *value,

				       GParamSpec   *pspec)

{

  GtkCellRendererToggle *celltoggle = GTK_CELL_RENDERER_TOGGLE (object);

  GtkCellRendererTogglePrivate *priv;

  priv = GTK_CELL_RENDERER_TOGGLE_GET_PRIVATE (object);

  switch (param_id)

    {

    case PROP_ACTIVE:

      celltoggle->active = g_value_get_boolean (value);

      break;

    case PROP_INCONSISTENT:

      priv->inconsistent = g_value_get_boolean (value);

      break;

    case PROP_ACTIVATABLE:

      celltoggle->activatable = g_value_get_boolean (value);

      break;

    case PROP_RADIO:

      celltoggle->radio = g_value_get_boolean (value);

      break;

    case PROP_INDICATOR_SIZE:

      priv->indicator_size = g_value_get_int (value);

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);

      break;

    }

}

/**

 * gtk_cell_renderer_toggle_new:

 *

 * Creates a new #GtkCellRendererToggle. Adjust rendering

 * parameters using object properties. Object properties can be set

 * globally (with g_object_set()). Also, with #GtkTreeViewColumn, you

 * can bind a property to a value in a #GtkTreeModel. For example, you

 * can bind the "active" property on the cell renderer to a boolean value

 * in the model, thus causing the check button to reflect the state of

 * the model.

 *

 * Return value: the new cell renderer

 **/

GtkCellRenderer *

gtk_cell_renderer_toggle_new (void)

{

  return g_object_new (GTK_TYPE_CELL_RENDERER_TOGGLE, NULL);

}

static void

gtk_cell_renderer_toggle_get_size (GtkCellRenderer *cell,

				   GtkWidget       *widget,

				   GdkRectangle    *cell_area,

				   gint            *x_offset,

				   gint            *y_offset,

				   gint            *width,

				   gint            *height)

{

  gint calc_width;

  gint calc_height;

  GtkCellRendererTogglePrivate *priv;

  priv = GTK_CELL_RENDERER_TOGGLE_GET_PRIVATE (cell);

  calc_width = (gint) cell->xpad * 2 + priv->indicator_size;

  calc_height = (gint) cell->ypad * 2 + priv->indicator_size;

  if (width)

    *width = calc_width;

  if (height)

    *height = calc_height;

  if (cell_area)

    {

      if (x_offset)

	{

	  *x_offset = ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?

		       (1.0 - cell->xalign) : cell->xalign) * (cell_area->width - calc_width);

	  *x_offset = MAX (*x_offset, 0);

	}

      if (y_offset)

	{

	  *y_offset = cell->yalign * (cell_area->height - calc_height);

	  *y_offset = MAX (*y_offset, 0);

	}

    }

  else

    {

      if (x_offset) *x_offset = 0;

      if (y_offset) *y_offset = 0;

    }

}

static void

gtk_cell_renderer_toggle_render (GtkCellRenderer      *cell,

				 GdkDrawable          *window,

				 GtkWidget            *widget,

				 GdkRectangle         *background_area,

				 GdkRectangle         *cell_area,

				 GdkRectangle         *expose_area,

				 GtkCellRendererState  flags)

{

  GtkCellRendererToggle *celltoggle = (GtkCellRendererToggle *) cell;

  GtkCellRendererTogglePrivate *priv;

  gint width, height;

  gint x_offset, y_offset;

  GtkShadowType shadow;

  GtkStateType state = 0;

  priv = GTK_CELL_RENDERER_TOGGLE_GET_PRIVATE (cell);

  gtk_cell_renderer_toggle_get_size (cell, widget, cell_area,

				     &x_offset, &y_offset,

				     &width, &height);

  width -= cell->xpad*2;

  height -= cell->ypad*2;

  if (width <= 0 || height <= 0)

    return;

  if (priv->inconsistent)

    shadow = GTK_SHADOW_ETCHED_IN;

  else

    shadow = celltoggle->active ? GTK_SHADOW_IN : GTK_SHADOW_OUT;

  if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE || !cell->sensitive)

    {

      state = GTK_STATE_INSENSITIVE;

    }

  else if ((flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED)

    {

      if (gtk_widget_has_focus (widget))

	state = GTK_STATE_SELECTED;

      else

	state = GTK_STATE_ACTIVE;

    }

  else

    {

      if (celltoggle->activatable)

        state = GTK_STATE_NORMAL;

      else

        state = GTK_STATE_INSENSITIVE;

    }

  if (celltoggle->radio)

    {

      gtk_paint_option (widget->style,

                        window,

                        state, shadow,

                        expose_area, widget, "cellradio",

                        cell_area->x + x_offset + cell->xpad,

                        cell_area->y + y_offset + cell->ypad,

                        width, height);

    }

  else

    {

      gtk_paint_check (widget->style,

                       window,

                       state, shadow,

                       expose_area, widget, "cellcheck",

                       cell_area->x + x_offset + cell->xpad,

                       cell_area->y + y_offset + cell->ypad,

                       width, height);

    }

}

static gint

gtk_cell_renderer_toggle_activate (GtkCellRenderer      *cell,

				   GdkEvent             *event,

				   GtkWidget            *widget,

				   const gchar          *path,

				   GdkRectangle         *background_area,

				   GdkRectangle         *cell_area,

				   GtkCellRendererState  flags)

{

  GtkCellRendererToggle *celltoggle;

  celltoggle = GTK_CELL_RENDERER_TOGGLE (cell);

  if (celltoggle->activatable)

    {

      g_signal_emit (cell, toggle_cell_signals[TOGGLED], 0, path);

      return TRUE;

    }

  return FALSE;

}

/**

 * gtk_cell_renderer_toggle_set_radio:

 * @toggle: a #GtkCellRendererToggle

 * @radio: %TRUE to make the toggle look like a radio button

 * 

 * If @radio is %TRUE, the cell renderer renders a radio toggle

 * (i.e. a toggle in a group of mutually-exclusive toggles).

 * If %FALSE, it renders a check toggle (a standalone boolean option).

 * This can be set globally for the cell renderer, or changed just

 * before rendering each cell in the model (for #GtkTreeView, you set

 * up a per-row setting using #GtkTreeViewColumn to associate model

 * columns with cell renderer properties).

 **/

void

gtk_cell_renderer_toggle_set_radio (GtkCellRendererToggle *toggle,

				    gboolean               radio)

{

  g_return_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle));

  toggle->radio = radio;

}

/**

 * gtk_cell_renderer_toggle_get_radio:

 * @toggle: a #GtkCellRendererToggle

 *

 * Returns whether we're rendering radio toggles rather than checkboxes. 

 * 

 * Return value: %TRUE if we're rendering radio toggles rather than checkboxes

 **/

gboolean

gtk_cell_renderer_toggle_get_radio (GtkCellRendererToggle *toggle)

{

  g_return_val_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle), FALSE);

  return toggle->radio;

}

/**

 * gtk_cell_renderer_toggle_get_active:

 * @toggle: a #GtkCellRendererToggle

 *

 * Returns whether the cell renderer is active. See

 * gtk_cell_renderer_toggle_set_active().

 *

 * Return value: %TRUE if the cell renderer is active.

 **/

gboolean

gtk_cell_renderer_toggle_get_active (GtkCellRendererToggle *toggle)

{

  g_return_val_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle), FALSE);

  return toggle->active;

}

/**

 * gtk_cell_renderer_toggle_set_active:

 * @toggle: a #GtkCellRendererToggle.

 * @setting: the value to set.

 *

 * Activates or deactivates a cell renderer.

 **/

void

gtk_cell_renderer_toggle_set_active (GtkCellRendererToggle *toggle,

				     gboolean               setting)

{

  g_return_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle));

  g_object_set (toggle, "active", setting ? TRUE : FALSE, NULL);

}

/**

 * gtk_cell_renderer_toggle_get_activatable:

 * @toggle: a #GtkCellRendererToggle

 *

 * Returns whether the cell renderer is activatable. See

 * gtk_cell_renderer_toggle_set_activatable().

 *

 * Return value: %TRUE if the cell renderer is activatable.

 *

 * Since: 2.18

 **/

gboolean

gtk_cell_renderer_toggle_get_activatable (GtkCellRendererToggle *toggle)

{

  g_return_val_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle), FALSE);

  return toggle->activatable;

}

/**

 * gtk_cell_renderer_toggle_set_activatable:

 * @toggle: a #GtkCellRendererToggle.

 * @setting: the value to set.

 *

 * Makes the cell renderer activatable.

 *

 * Since: 2.18

 **/

void

gtk_cell_renderer_toggle_set_activatable (GtkCellRendererToggle *toggle,

                                          gboolean               setting)

{

  g_return_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle));

  if (toggle->activatable != setting)

    {

      toggle->activatable = setting ? TRUE : FALSE;

      g_object_notify (G_OBJECT (toggle), "activatable");

    }

}

#define __GTK_CELL_RENDERER_TOGGLE_C__

#include "gtkaliasdef.c"