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gtk2/gtk/gtkcellview.c
Benjamin Otte e9dd3dc46a cellview: Port to Cairo rendering
2010-09-26 15:03:01 +02:00

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/* gtkellview.c
* Copyright (C) 2002, 2003 Kristian Rietveld <kris@gtk.org>
*
* 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 <string.h>
#include "gtkcellview.h"
#include "gtkcelllayout.h"
#include "gtkintl.h"
#include "gtkcellrenderertext.h"
#include "gtkcellrendererpixbuf.h"
#include "gtksizerequest.h"
#include "gtkcellsizerequest.h"
#include "gtkprivate.h"
#include <gobject/gmarshal.h>
#include "gtkbuildable.h"
typedef struct _GtkCellViewCellInfo GtkCellViewCellInfo;
struct _GtkCellViewCellInfo
{
GtkCellRenderer *cell;
gint requested_width;
gint natural_width;
gint real_width;
guint expand : 1;
guint pack : 1;
GSList *attributes;
GtkCellLayoutDataFunc func;
gpointer func_data;
GDestroyNotify destroy;
};
struct _GtkCellViewPrivate
{
GtkTreeModel *model;
GtkTreeRowReference *displayed_row;
GList *cell_list;
gint spacing;
GdkColor background;
gboolean background_set;
};
static void gtk_cell_view_cell_layout_init (GtkCellLayoutIface *iface);
static void gtk_cell_view_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gtk_cell_view_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_cell_view_finalize (GObject *object);
static void gtk_cell_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean gtk_cell_view_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_cell_view_set_value (GtkCellView *cell_view,
GtkCellRenderer *renderer,
gchar *property,
GValue *value);
static GtkCellViewCellInfo *gtk_cell_view_get_cell_info (GtkCellView *cellview,
GtkCellRenderer *renderer);
static void gtk_cell_view_set_cell_data (GtkCellView *cell_view);
static void gtk_cell_view_cell_layout_pack_start (GtkCellLayout *layout,
GtkCellRenderer *renderer,
gboolean expand);
static void gtk_cell_view_cell_layout_pack_end (GtkCellLayout *layout,
GtkCellRenderer *renderer,
gboolean expand);
static void gtk_cell_view_cell_layout_add_attribute (GtkCellLayout *layout,
GtkCellRenderer *renderer,
const gchar *attribute,
gint column);
static void gtk_cell_view_cell_layout_clear (GtkCellLayout *layout);
static void gtk_cell_view_cell_layout_clear_attributes (GtkCellLayout *layout,
GtkCellRenderer *renderer);
static void gtk_cell_view_cell_layout_set_cell_data_func (GtkCellLayout *layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy);
static void gtk_cell_view_cell_layout_reorder (GtkCellLayout *layout,
GtkCellRenderer *cell,
gint position);
static GList * gtk_cell_view_cell_layout_get_cells (GtkCellLayout *layout);
/* buildable */
static void gtk_cell_view_buildable_init (GtkBuildableIface *iface);
static gboolean gtk_cell_view_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data);
static void gtk_cell_view_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer *data);
static void gtk_cell_view_size_request_init (GtkSizeRequestIface *iface);
static void gtk_cell_view_get_width (GtkSizeRequest *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_cell_view_get_height (GtkSizeRequest *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_cell_view_get_width_for_height (GtkSizeRequest *widget,
gint avail_size,
gint *minimum_size,
gint *natural_size);
static void gtk_cell_view_get_height_for_width (GtkSizeRequest *widget,
gint avail_size,
gint *minimum_size,
gint *natural_size);
static GtkBuildableIface *parent_buildable_iface;
enum
{
PROP_0,
PROP_BACKGROUND,
PROP_BACKGROUND_GDK,
PROP_BACKGROUND_SET,
PROP_MODEL
};
G_DEFINE_TYPE_WITH_CODE (GtkCellView, gtk_cell_view, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
gtk_cell_view_cell_layout_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_cell_view_buildable_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SIZE_REQUEST,
gtk_cell_view_size_request_init))
static void
gtk_cell_view_class_init (GtkCellViewClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
gobject_class->get_property = gtk_cell_view_get_property;
gobject_class->set_property = gtk_cell_view_set_property;
gobject_class->finalize = gtk_cell_view_finalize;
widget_class->expose_event = gtk_cell_view_expose;
widget_class->size_allocate = gtk_cell_view_size_allocate;
/* properties */
g_object_class_install_property (gobject_class,
PROP_BACKGROUND,
g_param_spec_string ("background",
P_("Background color name"),
P_("Background color as a string"),
NULL,
GTK_PARAM_WRITABLE));
g_object_class_install_property (gobject_class,
PROP_BACKGROUND_GDK,
g_param_spec_boxed ("background-gdk",
P_("Background color"),
P_("Background color as a GdkColor"),
GDK_TYPE_COLOR,
GTK_PARAM_READWRITE));
/**
* GtkCellView:model
*
* The model for cell view
*
* since 2.10
*/
g_object_class_install_property (gobject_class,
PROP_MODEL,
g_param_spec_object ("model",
P_("CellView model"),
P_("The model for cell view"),
GTK_TYPE_TREE_MODEL,
GTK_PARAM_READWRITE));
#define ADD_SET_PROP(propname, propval, nick, blurb) g_object_class_install_property (gobject_class, propval, g_param_spec_boolean (propname, nick, blurb, FALSE, GTK_PARAM_READWRITE))
ADD_SET_PROP ("background-set", PROP_BACKGROUND_SET,
P_("Background set"),
P_("Whether this tag affects the background color"));
g_type_class_add_private (gobject_class, sizeof (GtkCellViewPrivate));
}
static void
gtk_cell_view_buildable_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = _gtk_cell_layout_buildable_add_child;
iface->custom_tag_start = gtk_cell_view_buildable_custom_tag_start;
iface->custom_tag_end = gtk_cell_view_buildable_custom_tag_end;
}
static void
gtk_cell_view_cell_layout_init (GtkCellLayoutIface *iface)
{
iface->pack_start = gtk_cell_view_cell_layout_pack_start;
iface->pack_end = gtk_cell_view_cell_layout_pack_end;
iface->clear = gtk_cell_view_cell_layout_clear;
iface->add_attribute = gtk_cell_view_cell_layout_add_attribute;
iface->set_cell_data_func = gtk_cell_view_cell_layout_set_cell_data_func;
iface->clear_attributes = gtk_cell_view_cell_layout_clear_attributes;
iface->reorder = gtk_cell_view_cell_layout_reorder;
iface->get_cells = gtk_cell_view_cell_layout_get_cells;
}
static void
gtk_cell_view_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellView *view = GTK_CELL_VIEW (object);
switch (param_id)
{
case PROP_BACKGROUND_GDK:
{
GdkColor color;
color = view->priv->background;
g_value_set_boxed (value, &color);
}
break;
case PROP_BACKGROUND_SET:
g_value_set_boolean (value, view->priv->background_set);
break;
case PROP_MODEL:
g_value_set_object (value, view->priv->model);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gtk_cell_view_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCellView *view = GTK_CELL_VIEW (object);
switch (param_id)
{
case PROP_BACKGROUND:
{
GdkColor color;
if (!g_value_get_string (value))
gtk_cell_view_set_background_color (view, NULL);
else if (gdk_color_parse (g_value_get_string (value), &color))
gtk_cell_view_set_background_color (view, &color);
else
g_warning ("Don't know color `%s'", g_value_get_string (value));
g_object_notify (object, "background-gdk");
}
break;
case PROP_BACKGROUND_GDK:
gtk_cell_view_set_background_color (view, g_value_get_boxed (value));
break;
case PROP_BACKGROUND_SET:
view->priv->background_set = g_value_get_boolean (value);
break;
case PROP_MODEL:
gtk_cell_view_set_model (view, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gtk_cell_view_init (GtkCellView *cellview)
{
GtkCellViewPrivate *priv;
cellview->priv = G_TYPE_INSTANCE_GET_PRIVATE (cellview,
GTK_TYPE_CELL_VIEW,
GtkCellViewPrivate);
priv = cellview->priv;
gtk_widget_set_has_window (GTK_WIDGET (cellview), FALSE);
}
static void
gtk_cell_view_finalize (GObject *object)
{
GtkCellView *cellview = GTK_CELL_VIEW (object);
gtk_cell_view_cell_layout_clear (GTK_CELL_LAYOUT (cellview));
if (cellview->priv->model)
g_object_unref (cellview->priv->model);
if (cellview->priv->displayed_row)
gtk_tree_row_reference_free (cellview->priv->displayed_row);
G_OBJECT_CLASS (gtk_cell_view_parent_class)->finalize (object);
}
static void
gtk_cell_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkCellView *cellview;
GtkRequestedSize *sizes;
GList *list;
gint n_visible_cells, n_expand_cells;
gint avail_width = 0;
gint extra_per_cell, extra_extra, i;
gboolean first_cell = TRUE;
gtk_widget_set_allocation (widget, allocation);
cellview = GTK_CELL_VIEW (widget);
avail_width = allocation->width;
/* Count visible/expand children */
for (n_visible_cells = 0, n_expand_cells = 0, list = cellview->priv->cell_list;
list; list = list->next)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)list->data;
n_visible_cells++;
if (info->expand)
n_expand_cells++;
}
sizes = g_new0 (GtkRequestedSize, n_visible_cells);
/* checking how much extra space we have */
for (i = 0, list = cellview->priv->cell_list; list; list = list->next)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)list->data;
if (!gtk_cell_renderer_get_visible (info->cell))
continue;
sizes[i].data = info;
sizes[i].minimum_size = info->requested_width;
sizes[i].natural_size = info->natural_width;
if (!first_cell)
avail_width -= cellview->priv->spacing;
avail_width -= sizes[i].minimum_size;
first_cell = FALSE;
i++;
}
avail_width = gtk_distribute_natural_allocation (MAX (0, avail_width), n_visible_cells, sizes);
/* Deal with any expand space... */
if (n_expand_cells > 0)
{
extra_per_cell = avail_width / n_expand_cells;
extra_extra = avail_width % n_expand_cells;
}
else
/* Everything just left-aligned if no cells expand */
extra_per_cell = extra_extra = 0;
for (i = 0, list = cellview->priv->cell_list; list; list = list->next)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)list->data;
if (!gtk_cell_renderer_get_visible (info->cell))
continue;
info->real_width = sizes[i].minimum_size;
if (info->expand)
{
info->real_width += extra_per_cell;
if (extra_extra)
{
info->real_width++;
extra_extra--;
}
}
/* increment index into sizes for visible children */
i++;
}
g_free (sizes);
}
static gboolean
gtk_cell_view_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkAllocation allocation;
GList *list;
GtkCellView *cellview;
GdkRectangle area;
GtkCellRendererState state;
gboolean rtl = (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL);
GtkPackType packing;
cairo_t *cr;
cellview = GTK_CELL_VIEW (widget);
if (!gtk_widget_is_drawable (widget))
return FALSE;
gtk_widget_get_allocation (widget, &allocation);
cr = gdk_cairo_create (event->window);
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
/* "blank" background */
if (cellview->priv->background_set)
{
gdk_cairo_rectangle (cr, &allocation);
cairo_set_source_rgb (cr,
cellview->priv->background.red / 65535.,
cellview->priv->background.green / 65535.,
cellview->priv->background.blue / 65535.);
cairo_fill (cr);
}
/* set cell data (if available) */
if (cellview->priv->displayed_row)
gtk_cell_view_set_cell_data (cellview);
else if (cellview->priv->model)
{
cairo_destroy (cr);
return FALSE;
}
/* render cells */
area = allocation;
/* we draw on our very own window, initialize x and y to zero */
area.y = allocation.y;
if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT)
state = GTK_CELL_RENDERER_PRELIT;
else if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
state = GTK_CELL_RENDERER_INSENSITIVE;
else
state = 0;
for (packing = GTK_PACK_START; packing <= GTK_PACK_END; ++packing)
{
if (packing == GTK_PACK_START)
area.x = allocation.x + (rtl ? allocation.width : 0);
else
area.x = rtl ? allocation.x : (allocation.x + allocation.width);
for (list = cellview->priv->cell_list; list; list = list->next)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)list->data;
if (info->pack != packing)
continue;
if (!gtk_cell_renderer_get_visible (info->cell))
continue;
area.width = info->real_width;
if ((packing == GTK_PACK_START && rtl) ||
(packing == GTK_PACK_END && !rtl))
area.x -= area.width;
gtk_cell_renderer_render_cairo (info->cell,
cr,
widget,
/* FIXME! */
&area, &area, state);
if ((packing == GTK_PACK_START && !rtl) ||
(packing == GTK_PACK_END && rtl))
{
area.x += area.width;
area.x += cellview->priv->spacing;
}
else
area.x -= cellview->priv->spacing;
}
}
cairo_destroy (cr);
return FALSE;
}
static GtkCellViewCellInfo *
gtk_cell_view_get_cell_info (GtkCellView *cellview,
GtkCellRenderer *renderer)
{
GList *i;
for (i = cellview->priv->cell_list; i; i = i->next)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)i->data;
if (info->cell == renderer)
return info;
}
return NULL;
}
static void
gtk_cell_view_set_cell_data (GtkCellView *cell_view)
{
GList *i;
GtkTreeIter iter;
GtkTreePath *path;
g_return_if_fail (cell_view->priv->displayed_row != NULL);
path = gtk_tree_row_reference_get_path (cell_view->priv->displayed_row);
if (!path)
return;
gtk_tree_model_get_iter (cell_view->priv->model, &iter, path);
gtk_tree_path_free (path);
for (i = cell_view->priv->cell_list; i; i = i->next)
{
GSList *j;
GtkCellViewCellInfo *info = i->data;
g_object_freeze_notify (G_OBJECT (info->cell));
for (j = info->attributes; j && j->next; j = j->next->next)
{
gchar *property = j->data;
gint column = GPOINTER_TO_INT (j->next->data);
GValue value = {0, };
gtk_tree_model_get_value (cell_view->priv->model, &iter,
column, &value);
g_object_set_property (G_OBJECT (info->cell),
property, &value);
g_value_unset (&value);
}
if (info->func)
(* info->func) (GTK_CELL_LAYOUT (cell_view),
info->cell,
cell_view->priv->model,
&iter,
info->func_data);
g_object_thaw_notify (G_OBJECT (info->cell));
}
}
/* GtkCellLayout implementation */
static void
gtk_cell_view_cell_layout_pack_start (GtkCellLayout *layout,
GtkCellRenderer *renderer,
gboolean expand)
{
GtkCellViewCellInfo *info;
GtkCellView *cellview = GTK_CELL_VIEW (layout);
g_return_if_fail (!gtk_cell_view_get_cell_info (cellview, renderer));
g_object_ref_sink (renderer);
info = g_slice_new0 (GtkCellViewCellInfo);
info->cell = renderer;
info->expand = expand ? TRUE : FALSE;
info->pack = GTK_PACK_START;
cellview->priv->cell_list = g_list_append (cellview->priv->cell_list, info);
gtk_widget_queue_resize (GTK_WIDGET (cellview));
}
static void
gtk_cell_view_cell_layout_pack_end (GtkCellLayout *layout,
GtkCellRenderer *renderer,
gboolean expand)
{
GtkCellViewCellInfo *info;
GtkCellView *cellview = GTK_CELL_VIEW (layout);
g_return_if_fail (!gtk_cell_view_get_cell_info (cellview, renderer));
g_object_ref_sink (renderer);
info = g_slice_new0 (GtkCellViewCellInfo);
info->cell = renderer;
info->expand = expand ? TRUE : FALSE;
info->pack = GTK_PACK_END;
cellview->priv->cell_list = g_list_append (cellview->priv->cell_list, info);
gtk_widget_queue_resize (GTK_WIDGET (cellview));
}
static void
gtk_cell_view_cell_layout_add_attribute (GtkCellLayout *layout,
GtkCellRenderer *renderer,
const gchar *attribute,
gint column)
{
GtkCellViewCellInfo *info;
GtkCellView *cellview = GTK_CELL_VIEW (layout);
info = gtk_cell_view_get_cell_info (cellview, renderer);
g_return_if_fail (info != NULL);
info->attributes = g_slist_prepend (info->attributes,
GINT_TO_POINTER (column));
info->attributes = g_slist_prepend (info->attributes,
g_strdup (attribute));
}
static void
gtk_cell_view_cell_layout_clear (GtkCellLayout *layout)
{
GtkCellView *cellview = GTK_CELL_VIEW (layout);
while (cellview->priv->cell_list)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)cellview->priv->cell_list->data;
gtk_cell_view_cell_layout_clear_attributes (layout, info->cell);
g_object_unref (info->cell);
g_slice_free (GtkCellViewCellInfo, info);
cellview->priv->cell_list = g_list_delete_link (cellview->priv->cell_list,
cellview->priv->cell_list);
}
}
static void
gtk_cell_view_cell_layout_set_cell_data_func (GtkCellLayout *layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy)
{
GtkCellView *cellview = GTK_CELL_VIEW (layout);
GtkCellViewCellInfo *info;
info = gtk_cell_view_get_cell_info (cellview, cell);
g_return_if_fail (info != NULL);
if (info->destroy)
{
GDestroyNotify d = info->destroy;
info->destroy = NULL;
d (info->func_data);
}
info->func = func;
info->func_data = func_data;
info->destroy = destroy;
}
static void
gtk_cell_view_cell_layout_clear_attributes (GtkCellLayout *layout,
GtkCellRenderer *renderer)
{
GtkCellView *cellview = GTK_CELL_VIEW (layout);
GtkCellViewCellInfo *info;
GSList *list;
info = gtk_cell_view_get_cell_info (cellview, renderer);
if (info != NULL)
{
list = info->attributes;
while (list && list->next)
{
g_free (list->data);
list = list->next->next;
}
g_slist_free (info->attributes);
info->attributes = NULL;
}
}
static void
gtk_cell_view_cell_layout_reorder (GtkCellLayout *layout,
GtkCellRenderer *cell,
gint position)
{
GtkCellView *cellview = GTK_CELL_VIEW (layout);
GtkCellViewCellInfo *info;
GList *link;
info = gtk_cell_view_get_cell_info (cellview, cell);
g_return_if_fail (info != NULL);
g_return_if_fail (position >= 0);
link = g_list_find (cellview->priv->cell_list, info);
g_return_if_fail (link != NULL);
cellview->priv->cell_list = g_list_delete_link (cellview->priv->cell_list,
link);
cellview->priv->cell_list = g_list_insert (cellview->priv->cell_list,
info, position);
gtk_widget_queue_draw (GTK_WIDGET (cellview));
}
/**
* gtk_cell_view_new:
*
* Creates a new #GtkCellView widget.
*
* Return value: A newly created #GtkCellView widget.
*
* Since: 2.6
*/
GtkWidget *
gtk_cell_view_new (void)
{
GtkCellView *cellview;
cellview = g_object_new (gtk_cell_view_get_type (), NULL);
return GTK_WIDGET (cellview);
}
/**
* gtk_cell_view_new_with_text:
* @text: the text to display in the cell view
*
* Creates a new #GtkCellView widget, adds a #GtkCellRendererText
* to it, and makes its show @text.
*
* Return value: A newly created #GtkCellView widget.
*
* Since: 2.6
*/
GtkWidget *
gtk_cell_view_new_with_text (const gchar *text)
{
GtkCellView *cellview;
GtkCellRenderer *renderer;
GValue value = {0, };
cellview = GTK_CELL_VIEW (gtk_cell_view_new ());
renderer = gtk_cell_renderer_text_new ();
gtk_cell_view_cell_layout_pack_start (GTK_CELL_LAYOUT (cellview),
renderer, TRUE);
g_value_init (&value, G_TYPE_STRING);
g_value_set_string (&value, text);
gtk_cell_view_set_value (cellview, renderer, "text", &value);
g_value_unset (&value);
return GTK_WIDGET (cellview);
}
/**
* gtk_cell_view_new_with_markup:
* @markup: the text to display in the cell view
*
* Creates a new #GtkCellView widget, adds a #GtkCellRendererText
* to it, and makes it show @markup. The text can be
* marked up with the <link linkend="PangoMarkupFormat">Pango text
* markup language</link>.
*
* Return value: A newly created #GtkCellView widget.
*
* Since: 2.6
*/
GtkWidget *
gtk_cell_view_new_with_markup (const gchar *markup)
{
GtkCellView *cellview;
GtkCellRenderer *renderer;
GValue value = {0, };
cellview = GTK_CELL_VIEW (gtk_cell_view_new ());
renderer = gtk_cell_renderer_text_new ();
gtk_cell_view_cell_layout_pack_start (GTK_CELL_LAYOUT (cellview),
renderer, TRUE);
g_value_init (&value, G_TYPE_STRING);
g_value_set_string (&value, markup);
gtk_cell_view_set_value (cellview, renderer, "markup", &value);
g_value_unset (&value);
return GTK_WIDGET (cellview);
}
/**
* gtk_cell_view_new_with_pixbuf:
* @pixbuf: the image to display in the cell view
*
* Creates a new #GtkCellView widget, adds a #GtkCellRendererPixbuf
* to it, and makes its show @pixbuf.
*
* Return value: A newly created #GtkCellView widget.
*
* Since: 2.6
*/
GtkWidget *
gtk_cell_view_new_with_pixbuf (GdkPixbuf *pixbuf)
{
GtkCellView *cellview;
GtkCellRenderer *renderer;
GValue value = {0, };
cellview = GTK_CELL_VIEW (gtk_cell_view_new ());
renderer = gtk_cell_renderer_pixbuf_new ();
gtk_cell_view_cell_layout_pack_start (GTK_CELL_LAYOUT (cellview),
renderer, TRUE);
g_value_init (&value, GDK_TYPE_PIXBUF);
g_value_set_object (&value, pixbuf);
gtk_cell_view_set_value (cellview, renderer, "pixbuf", &value);
g_value_unset (&value);
return GTK_WIDGET (cellview);
}
/**
* gtk_cell_view_set_value:
* @cell_view: a #GtkCellView widget
* @renderer: one of the renderers of @cell_view
* @property: the name of the property of @renderer to set
* @value: the new value to set the property to
*
* Sets a property of a cell renderer of @cell_view, and
* makes sure the display of @cell_view is updated.
*
* Since: 2.6
*/
static void
gtk_cell_view_set_value (GtkCellView *cell_view,
GtkCellRenderer *renderer,
gchar *property,
GValue *value)
{
g_object_set_property (G_OBJECT (renderer), property, value);
/* force resize and redraw */
gtk_widget_queue_resize (GTK_WIDGET (cell_view));
gtk_widget_queue_draw (GTK_WIDGET (cell_view));
}
/**
* gtk_cell_view_set_model:
* @cell_view: a #GtkCellView
* @model: (allow-none): a #GtkTreeModel
*
* Sets the model for @cell_view. If @cell_view already has a model
* set, it will remove it before setting the new model. If @model is
* %NULL, then it will unset the old model.
*
* Since: 2.6
*/
void
gtk_cell_view_set_model (GtkCellView *cell_view,
GtkTreeModel *model)
{
g_return_if_fail (GTK_IS_CELL_VIEW (cell_view));
g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
if (cell_view->priv->model)
{
if (cell_view->priv->displayed_row)
gtk_tree_row_reference_free (cell_view->priv->displayed_row);
cell_view->priv->displayed_row = NULL;
g_object_unref (cell_view->priv->model);
cell_view->priv->model = NULL;
}
cell_view->priv->model = model;
if (cell_view->priv->model)
g_object_ref (cell_view->priv->model);
}
/**
* gtk_cell_view_get_model:
* @cell_view: a #GtkCellView
*
* Returns the model for @cell_view. If no model is used %NULL is
* returned.
*
* Returns: (transfer none): a #GtkTreeModel used or %NULL
*
* Since: 2.16
**/
GtkTreeModel *
gtk_cell_view_get_model (GtkCellView *cell_view)
{
g_return_val_if_fail (GTK_IS_CELL_VIEW (cell_view), NULL);
return cell_view->priv->model;
}
/**
* gtk_cell_view_set_displayed_row:
* @cell_view: a #GtkCellView
* @path: (allow-none): a #GtkTreePath or %NULL to unset.
*
* Sets the row of the model that is currently displayed
* by the #GtkCellView. If the path is unset, then the
* contents of the cellview "stick" at their last value;
* this is not normally a desired result, but may be
* a needed intermediate state if say, the model for
* the #GtkCellView becomes temporarily empty.
*
* Since: 2.6
**/
void
gtk_cell_view_set_displayed_row (GtkCellView *cell_view,
GtkTreePath *path)
{
g_return_if_fail (GTK_IS_CELL_VIEW (cell_view));
g_return_if_fail (GTK_IS_TREE_MODEL (cell_view->priv->model));
if (cell_view->priv->displayed_row)
gtk_tree_row_reference_free (cell_view->priv->displayed_row);
if (path)
{
cell_view->priv->displayed_row =
gtk_tree_row_reference_new (cell_view->priv->model, path);
}
else
cell_view->priv->displayed_row = NULL;
/* force resize and redraw */
gtk_widget_queue_resize (GTK_WIDGET (cell_view));
gtk_widget_queue_draw (GTK_WIDGET (cell_view));
}
/**
* gtk_cell_view_get_displayed_row:
* @cell_view: a #GtkCellView
*
* Returns a #GtkTreePath referring to the currently
* displayed row. If no row is currently displayed,
* %NULL is returned.
*
* Returns: the currently displayed row or %NULL
*
* Since: 2.6
*/
GtkTreePath *
gtk_cell_view_get_displayed_row (GtkCellView *cell_view)
{
g_return_val_if_fail (GTK_IS_CELL_VIEW (cell_view), NULL);
if (!cell_view->priv->displayed_row)
return NULL;
return gtk_tree_row_reference_get_path (cell_view->priv->displayed_row);
}
/**
* gtk_cell_view_get_size_of_row:
* @cell_view: a #GtkCellView
* @path: a #GtkTreePath
* @requisition: return location for the size
*
* Sets @requisition to the size needed by @cell_view to display
* the model row pointed to by @path.
*
* Return value: %TRUE
*
* Since: 2.6
*
* Deprecated: 3.0: Use gtk_cell_view_get_desired_width_of_row() and
* gtk_cell_view_get_desired_height_for_width_of_row() instead.
*/
gboolean
gtk_cell_view_get_size_of_row (GtkCellView *cell_view,
GtkTreePath *path,
GtkRequisition *requisition)
{
GtkRequisition req;
g_return_val_if_fail (GTK_IS_CELL_VIEW (cell_view), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
/* Return the minimum height for the minimum width */
gtk_cell_view_get_desired_width_of_row (cell_view, path, &req.width, NULL);
gtk_cell_view_get_desired_height_for_width_of_row (cell_view, path, req.width, &req.height, NULL);
if (requisition)
*requisition = req;
return TRUE;
}
/**
* gtk_cell_view_get_desired_width_of_row:
* @cell_view: a #GtkCellView
* @path: a #GtkTreePath
* @minimum_size: location to store the minimum size
* @natural_size: location to store the natural size
*
* Sets @minimum_size and @natural_size to the width desired by @cell_view
* to display the model row pointed to by @path.
*
* Since: 3.0
*/
void
gtk_cell_view_get_desired_width_of_row (GtkCellView *cell_view,
GtkTreePath *path,
gint *minimum_size,
gint *natural_size)
{
GtkTreeRowReference *tmp;
g_return_if_fail (GTK_IS_CELL_VIEW (cell_view));
g_return_if_fail (path != NULL);
g_return_if_fail (minimum_size != NULL || natural_size != NULL);
tmp = cell_view->priv->displayed_row;
cell_view->priv->displayed_row =
gtk_tree_row_reference_new (cell_view->priv->model, path);
gtk_cell_view_get_width (GTK_SIZE_REQUEST (cell_view), minimum_size, natural_size);
gtk_tree_row_reference_free (cell_view->priv->displayed_row);
cell_view->priv->displayed_row = tmp;
/* Restore active size (this will restore the cellrenderer info->width/requested_width's) */
gtk_cell_view_get_width (GTK_SIZE_REQUEST (cell_view), NULL, NULL);
}
/**
* gtk_cell_view_get_desired_height_for_width_of_row:
* @cell_view: a #GtkCellView
* @path: a #GtkTreePath
* @avail_size: available width
* @minimum_size: location to store the minimum height
* @natural_size: location to store the natural height
*
* Sets @minimum_size and @natural_size to the height desired by @cell_view
* if it were allocated a width of @avail_size to display the model row
* pointed to by @path.
*
* Since: 3.0
*/
void
gtk_cell_view_get_desired_height_for_width_of_row (GtkCellView *cell_view,
GtkTreePath *path,
gint avail_size,
gint *minimum_size,
gint *natural_size)
{
GtkTreeRowReference *tmp;
g_return_if_fail (GTK_IS_CELL_VIEW (cell_view));
g_return_if_fail (path != NULL);
g_return_if_fail (minimum_size != NULL || natural_size != NULL);
tmp = cell_view->priv->displayed_row;
cell_view->priv->displayed_row =
gtk_tree_row_reference_new (cell_view->priv->model, path);
/* Then get the collective height_for_width based on the cached values */
gtk_cell_view_get_height_for_width (GTK_SIZE_REQUEST (cell_view), avail_size, minimum_size, natural_size);
gtk_tree_row_reference_free (cell_view->priv->displayed_row);
cell_view->priv->displayed_row = tmp;
/* Restore active size (this will restore the cellrenderer info->width/requested_width's) */
gtk_cell_view_get_width (GTK_SIZE_REQUEST (cell_view), NULL, NULL);
}
/**
* gtk_cell_view_set_background_color:
* @cell_view: a #GtkCellView
* @color: the new background color
*
* Sets the background color of @view.
*
* Since: 2.6
*/
void
gtk_cell_view_set_background_color (GtkCellView *cell_view,
const GdkColor *color)
{
g_return_if_fail (GTK_IS_CELL_VIEW (cell_view));
if (color)
{
if (!cell_view->priv->background_set)
{
cell_view->priv->background_set = TRUE;
g_object_notify (G_OBJECT (cell_view), "background-set");
}
cell_view->priv->background = *color;
}
else
{
if (cell_view->priv->background_set)
{
cell_view->priv->background_set = FALSE;
g_object_notify (G_OBJECT (cell_view), "background-set");
}
}
gtk_widget_queue_draw (GTK_WIDGET (cell_view));
}
static GList *
gtk_cell_view_cell_layout_get_cells (GtkCellLayout *layout)
{
GtkCellView *cell_view = GTK_CELL_VIEW (layout);
GList *retval = NULL, *list;
g_return_val_if_fail (cell_view != NULL, NULL);
gtk_cell_view_set_cell_data (cell_view);
for (list = cell_view->priv->cell_list; list; list = list->next)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)list->data;
retval = g_list_prepend (retval, info->cell);
}
return g_list_reverse (retval);
}
static gboolean
gtk_cell_view_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data)
{
if (parent_buildable_iface->custom_tag_start &&
parent_buildable_iface->custom_tag_start (buildable, builder, child,
tagname, parser, data))
return TRUE;
return _gtk_cell_layout_buildable_custom_tag_start (buildable, builder, child,
tagname, parser, data);
}
static void
gtk_cell_view_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer *data)
{
if (strcmp (tagname, "attributes") == 0)
_gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname,
data);
else if (parent_buildable_iface->custom_tag_end)
parent_buildable_iface->custom_tag_end (buildable, builder, child, tagname,
data);
}
static void
gtk_cell_view_size_request_init (GtkSizeRequestIface *iface)
{
iface->get_width = gtk_cell_view_get_width;
iface->get_height = gtk_cell_view_get_height;
iface->get_width_for_height = gtk_cell_view_get_width_for_height;
iface->get_height_for_width = gtk_cell_view_get_height_for_width;
}
static void
gtk_cell_view_get_width (GtkSizeRequest *widget,
gint *minimum_size,
gint *natural_size)
{
GList *list;
gint cell_min, cell_nat;
gboolean first_cell = TRUE;
GtkCellView *cellview = GTK_CELL_VIEW (widget);
gint minimum, natural;
minimum = natural = 0;
if (cellview->priv->displayed_row)
gtk_cell_view_set_cell_data (cellview);
for (list = cellview->priv->cell_list; list; list = list->next)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)list->data;
if (gtk_cell_renderer_get_visible (info->cell))
{
if (!first_cell)
{
minimum += cellview->priv->spacing;
natural += cellview->priv->spacing;
}
gtk_cell_size_request_get_width (GTK_CELL_SIZE_REQUEST (info->cell),
GTK_WIDGET (cellview), &cell_min, &cell_nat);
info->requested_width = cell_min;
info->natural_width = cell_nat;
minimum += info->requested_width;
natural += info->natural_width;
first_cell = FALSE;
}
}
if (minimum_size)
*minimum_size = minimum;
if (natural_size)
*natural_size = natural;
}
static void
gtk_cell_view_get_height (GtkSizeRequest *widget,
gint *minimum_size,
gint *natural_size)
{
gint minimum_width;
/* CellViews only need to respond to height-for-width mode (cellview is pretty much
* an implementation detail of GtkComboBox) */
gtk_cell_view_get_width (widget, &minimum_width, NULL);
gtk_cell_view_get_height_for_width (widget, minimum_width, minimum_size, natural_size);
}
static void
gtk_cell_view_get_width_for_height (GtkSizeRequest *widget,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
/* CellViews only need to respond to height-for-width mode (cellview is pretty much
* an implementation detail of GtkComboBox) */
gtk_cell_view_get_width (widget, minimum_size, natural_size);
}
static void
gtk_cell_view_get_height_for_width (GtkSizeRequest *widget,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
GtkCellView *cellview = GTK_CELL_VIEW (widget);
GList *list;
GtkRequestedSize *sizes;
GArray *array;
gint minimum, natural, avail_size;
gboolean first_cell = TRUE;
gint n_expand_cells = 0;
gint extra_per_cell, extra_extra, i;
minimum = natural = 0;
avail_size = for_size;
array = g_array_new (0, TRUE, sizeof (GtkRequestedSize));
if (cellview->priv->displayed_row)
gtk_cell_view_set_cell_data (cellview);
/* First allocate the right width to all cells */
for (list = cellview->priv->cell_list; list; list = list->next)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)list->data;
if (gtk_cell_renderer_get_visible (info->cell))
{
GtkRequestedSize requested;
gtk_cell_size_request_get_width (GTK_CELL_SIZE_REQUEST (info->cell),
GTK_WIDGET (cellview),
&requested.minimum_size,
&requested.natural_size);
requested.data = info;
g_array_append_val (array, requested);
avail_size -= requested.minimum_size;
if (!first_cell)
avail_size -= cellview->priv->spacing;
first_cell = FALSE;
if (info->expand)
n_expand_cells++;
}
}
sizes = (GtkRequestedSize *)array->data;
avail_size = gtk_distribute_natural_allocation (MAX (0, avail_size), array->len, sizes);
/* Deal with any expand space... */
if (n_expand_cells > 0)
{
extra_per_cell = avail_size / n_expand_cells;
extra_extra = avail_size % n_expand_cells;
}
else
/* Everything just left-aligned if no cells expand */
extra_per_cell = extra_extra = 0;
/* Now get the height for the real width of each cell */
for (i = 0, list = cellview->priv->cell_list; list; list = list->next)
{
GtkCellViewCellInfo *info = (GtkCellViewCellInfo *)list->data;
gint cell_minimum, cell_natural;
if (gtk_cell_renderer_get_visible (info->cell))
{
gint cell_width = sizes[i].minimum_size;
g_assert (sizes[i].data == info);
if (info->expand)
{
cell_width += extra_per_cell;
if (extra_extra)
{
cell_width++;
extra_extra--;
}
}
/* Get the height for the real width of this cell */
gtk_cell_size_request_get_height_for_width (GTK_CELL_SIZE_REQUEST (info->cell),
GTK_WIDGET (widget),
cell_width, &cell_minimum, &cell_natural);
minimum = MAX (minimum, cell_minimum);
natural = MAX (natural, cell_natural);
/* increment sizes[] index for visible cells */
i++;
}
}
g_array_free (array, TRUE);
if (minimum_size)
*minimum_size = minimum;
if (natural_size)
*natural_size = natural;
}
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