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b0713fb3bb41e6daf07c80d88098fee1461c0658
gtk3/gtk/gtkcellrenderer.c
Matthias Clasen e0aa12eb0a Tons of transfer annotations
2010-09-21 00:18:11 -04:00

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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 "gtkcellsizerequest.h"
#include "gtkintl.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtktreeprivate.h"
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,
GdkColor *color);
/* Fallback GtkCellSizeRequest implementation to use remaining ->get_size() implementations */
static void gtk_cell_renderer_cell_size_request_init (GtkCellSizeRequestIface *iface);
static void gtk_cell_renderer_get_width (GtkCellSizeRequest *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_cell_renderer_get_height (GtkCellSizeRequest *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_cell_renderer_get_height_for_width (GtkCellSizeRequest *cell,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height);
static void gtk_cell_renderer_get_width_for_height (GtkCellSizeRequest *cell,
GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width);
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;
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 };
/* Do a manual _get_type() here to avoid a deadlock implementing
* the interface which we are a prerequisite of.
*/
GType
gtk_cell_renderer_get_type (void)
{
static GType cell_renderer_type = 0;
if (G_UNLIKELY (cell_renderer_type == 0))
{
const GTypeInfo cell_renderer_info =
{
sizeof (GtkCellRendererClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_cell_renderer_class_init,
NULL, /* class_finalize */
NULL, /* class_init */
sizeof (GtkCellRenderer),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_cell_renderer_init,
NULL, /* value_table */
};
const GInterfaceInfo cell_size_request_info =
{
(GInterfaceInitFunc) gtk_cell_renderer_cell_size_request_init,
(GInterfaceFinalizeFunc) NULL,
NULL /* interface data */
};
cell_renderer_type = g_type_register_static (GTK_TYPE_OBJECT, "GtkCellRenderer",
&cell_renderer_info, G_TYPE_FLAG_ABSTRACT);
g_type_add_interface_static (cell_renderer_type, GTK_TYPE_CELL_SIZE_REQUEST,
&cell_size_request_info) ;
}
return cell_renderer_type;
}
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;
/**
* 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 (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 = 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, 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:
{
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:
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,
GdkColor *color)
{
GtkCellRendererPrivate *priv = cell->priv;
if (color)
{
if (!priv->cell_background_set)
{
priv->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 (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_size_request_get_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_size_request_get_size (GTK_CELL_SIZE_REQUEST (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
* @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 = cell->priv;
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 (priv->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)
{
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_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_cell_size_request_init (GtkCellSizeRequestIface *iface)
{
iface->get_width = gtk_cell_renderer_get_width;
iface->get_height = gtk_cell_renderer_get_height;
iface->get_width_for_height = gtk_cell_renderer_get_width_for_height;
iface->get_height_for_width = gtk_cell_renderer_get_height_for_width;
}
static void
gtk_cell_renderer_get_desired_size (GtkCellSizeRequest *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_get_width (GtkCellSizeRequest *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_cell_renderer_get_desired_size (cell, widget, GTK_ORIENTATION_HORIZONTAL,
minimum_size, natural_size);
}
static void
gtk_cell_renderer_get_height (GtkCellSizeRequest *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_cell_renderer_get_desired_size (cell, widget, GTK_ORIENTATION_VERTICAL,
minimum_size, natural_size);
}
static void
gtk_cell_renderer_get_height_for_width (GtkCellSizeRequest *cell,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height)
{
/* Fall back on the height reported from ->get_size() */
gtk_cell_size_request_get_height (cell, widget, minimum_height, natural_height);
}
static void
gtk_cell_renderer_get_width_for_height (GtkCellSizeRequest *cell,
GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width)
{
/* Fall back on the width reported from ->get_size() */
gtk_cell_size_request_get_width (cell, widget, minimum_width, natural_width);
}
/* 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);
}
}
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