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gtk2/gtk/gtkcelllayout.c
Matthias Clasen 522ae8d02f celllayout: Add a summary
2021-03-11 16:37:37 +00:00

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/* gtkcelllayout.c
* Copyright (C) 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, see <http://www.gnu.org/licenses/>.
*/
/**
* GtkCellLayout:
*
* An interface for packing cells
*
* #GtkCellLayout is an interface to be implemented by all objects which
* want to provide a #GtkTreeViewColumn like API for packing cells,
* setting attributes and data funcs.
*
* One of the notable features provided by implementations of
* GtkCellLayout are attributes. Attributes let you set the properties
* in flexible ways. They can just be set to constant values like regular
* properties. But they can also be mapped to a column of the underlying
* tree model with gtk_cell_layout_set_attributes(), which means that the value
* of the attribute can change from cell to cell as they are rendered by
* the cell renderer. Finally, it is possible to specify a function with
* gtk_cell_layout_set_cell_data_func() that is called to determine the
* value of the attribute for each cell that is rendered.
*
* # GtkCellLayouts as GtkBuildable
*
* Implementations of GtkCellLayout which also implement the GtkBuildable
* interface (#GtkCellView, #GtkIconView, #GtkComboBox,
* #GtkEntryCompletion, #GtkTreeViewColumn) accept GtkCellRenderer objects
* as <child> elements in UI definitions. They support a custom <attributes>
* element for their children, which can contain multiple <attribute>
* elements. Each <attribute> element has a name attribute which specifies
* a property of the cell renderer; the content of the element is the
* attribute value.
*
* This is an example of a UI definition fragment specifying attributes:
* |[
* <object class="GtkCellView">
* <child>
* <object class="GtkCellRendererText"/>
* <attributes>
* <attribute name="text">0</attribute>
* </attributes>
* </child>"
* </object>
* ]|
*
* Furthermore for implementations of GtkCellLayout that use a #GtkCellArea
* to lay out cells (all GtkCellLayouts in GTK use a GtkCellArea)
* [cell properties][cell-properties] can also be defined in the format by
* specifying the custom <cell-packing> attribute which can contain multiple
* <property> elements defined in the normal way.
*
* Here is a UI definition fragment specifying cell properties:
*
* |[
* <object class="GtkTreeViewColumn">
* <child>
* <object class="GtkCellRendererText"/>
* <cell-packing>
* <property name="align">True</property>
* <property name="expand">False</property>
* </cell-packing>
* </child>"
* </object>
* ]|
*
* # Subclassing GtkCellLayout implementations
*
* When subclassing a widget that implements #GtkCellLayout like
* #GtkIconView or #GtkComboBox, there are some considerations related
* to the fact that these widgets internally use a #GtkCellArea.
* The cell area is exposed as a construct-only property by these
* widgets. This means that it is possible to e.g. do
*
* |[<!-- language="C" -->
* combo = g_object_new (GTK_TYPE_COMBO_BOX, "cell-area", my_cell_area, NULL);
* ]|
*
* to use a custom cell area with a combo box. But construct properties
* are only initialized after instance init()
* functions have run, which means that using functions which rely on
* the existence of the cell area in your subclass’ init() function will
* cause the default cell area to be instantiated. In this case, a provided
* construct property value will be ignored (with a warning, to alert
* you to the problem).
*
* |[<!-- language="C" -->
* static void
* my_combo_box_init (MyComboBox *b)
* {
* GtkCellRenderer *cell;
*
* cell = gtk_cell_renderer_pixbuf_new ();
* // The following call causes the default cell area for combo boxes,
* // a GtkCellAreaBox, to be instantiated
* gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (b), cell, FALSE);
* ...
* }
*
* GtkWidget *
* my_combo_box_new (GtkCellArea *area)
* {
* // This call is going to cause a warning about area being ignored
* return g_object_new (MY_TYPE_COMBO_BOX, "cell-area", area, NULL);
* }
* ]|
*
* If supporting alternative cell areas with your derived widget is
* not important, then this does not have to concern you. If you want
* to support alternative cell areas, you can do so by moving the
* problematic calls out of init() and into a constructor()
* for your class.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include "gtkcelllayout.h"
#include "gtkbuilderprivate.h"
#include "gtkintl.h"
#define warn_no_cell_area(func) \
g_critical ("%s: Called but no GtkCellArea is available yet", func)
typedef GtkCellLayoutIface GtkCellLayoutInterface;
G_DEFINE_INTERFACE (GtkCellLayout, gtk_cell_layout, G_TYPE_OBJECT);
static void gtk_cell_layout_default_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand);
static void gtk_cell_layout_default_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand);
static void gtk_cell_layout_default_clear (GtkCellLayout *cell_layout);
static void gtk_cell_layout_default_add_attribute (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
const char *attribute,
int column);
static void gtk_cell_layout_default_set_cell_data_func (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy);
static void gtk_cell_layout_default_clear_attributes (GtkCellLayout *cell_layout,
GtkCellRenderer *cell);
static void gtk_cell_layout_default_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
int position);
static GList *gtk_cell_layout_default_get_cells (GtkCellLayout *cell_layout);
static void
gtk_cell_layout_default_init (GtkCellLayoutIface *iface)
{
iface->pack_start = gtk_cell_layout_default_pack_start;
iface->pack_end = gtk_cell_layout_default_pack_end;
iface->clear = gtk_cell_layout_default_clear;
iface->add_attribute = gtk_cell_layout_default_add_attribute;
iface->set_cell_data_func = gtk_cell_layout_default_set_cell_data_func;
iface->clear_attributes = gtk_cell_layout_default_clear_attributes;
iface->reorder = gtk_cell_layout_default_reorder;
iface->get_cells = gtk_cell_layout_default_get_cells;
}
/* Default implementation is to fall back on an underlying cell area */
static void
gtk_cell_layout_default_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_area)
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (area), cell, expand);
else
warn_no_cell_area ("GtkCellLayoutIface->pack_start()");
}
}
static void
gtk_cell_layout_default_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_area)
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (area), cell, expand);
else
warn_no_cell_area ("GtkCellLayoutIface->pack_end()");
}
}
static void
gtk_cell_layout_default_clear (GtkCellLayout *cell_layout)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_area)
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_clear (GTK_CELL_LAYOUT (area));
else
warn_no_cell_area ("GtkCellLayoutIface->clear()");
}
}
static void
gtk_cell_layout_default_add_attribute (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
const char *attribute,
int column)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_area)
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (area), cell, attribute, column);
else
warn_no_cell_area ("GtkCellLayoutIface->add_attribute()");
}
}
static void
gtk_cell_layout_default_set_cell_data_func (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_area)
{
area = iface->get_area (cell_layout);
if (area)
_gtk_cell_area_set_cell_data_func_with_proxy (area, cell,
(GFunc)func, func_data, destroy,
cell_layout);
else
warn_no_cell_area ("GtkCellLayoutIface->set_cell_data_func()");
}
}
static void
gtk_cell_layout_default_clear_attributes (GtkCellLayout *cell_layout,
GtkCellRenderer *cell)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_area)
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (area), cell);
else
warn_no_cell_area ("GtkCellLayoutIface->clear_attributes()");
}
}
static void
gtk_cell_layout_default_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
int position)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_area)
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_reorder (GTK_CELL_LAYOUT (area), cell, position);
else
warn_no_cell_area ("GtkCellLayoutIface->reorder()");
}
}
static GList *
gtk_cell_layout_default_get_cells (GtkCellLayout *cell_layout)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_area)
{
area = iface->get_area (cell_layout);
if (area)
return gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (area));
else
warn_no_cell_area ("GtkCellLayoutIface->get_cells()");
}
return NULL;
}
/**
* gtk_cell_layout_pack_start:
* @cell_layout: a #GtkCellLayout
* @cell: a #GtkCellRenderer
* @expand: %TRUE if @cell is to be given extra space allocated to @cell_layout
*
* Packs the @cell into the beginning of @cell_layout. If @expand is %FALSE,
* then the @cell is allocated no more space than it needs. Any unused space
* is divided evenly between cells for which @expand is %TRUE.
*
* Note that reusing the same cell renderer is not supported.
*/
void
gtk_cell_layout_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->pack_start (cell_layout, cell, expand);
}
/**
* gtk_cell_layout_pack_end:
* @cell_layout: a #GtkCellLayout
* @cell: a #GtkCellRenderer
* @expand: %TRUE if @cell is to be given extra space allocated to @cell_layout
*
* Adds the @cell to the end of @cell_layout. If @expand is %FALSE, then the
* @cell is allocated no more space than it needs. Any unused space is
* divided evenly between cells for which @expand is %TRUE.
*
* Note that reusing the same cell renderer is not supported.
*/
void
gtk_cell_layout_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->pack_end (cell_layout, cell, expand);
}
/**
* gtk_cell_layout_clear:
* @cell_layout: a #GtkCellLayout
*
* Unsets all the mappings on all renderers on @cell_layout and
* removes all renderers from @cell_layout.
*/
void
gtk_cell_layout_clear (GtkCellLayout *cell_layout)
{
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->clear (cell_layout);
}
static void
gtk_cell_layout_set_attributesv (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
va_list args)
{
char *attribute;
int column;
attribute = va_arg (args, char *);
gtk_cell_layout_clear_attributes (cell_layout, cell);
while (attribute != NULL)
{
column = va_arg (args, int);
gtk_cell_layout_add_attribute (cell_layout, cell, attribute, column);
attribute = va_arg (args, char *);
}
}
/**
* gtk_cell_layout_set_attributes:
* @cell_layout: a #GtkCellLayout
* @cell: a #GtkCellRenderer
* @...: a %NULL-terminated list of attributes
*
* Sets the attributes in list as the attributes of @cell_layout.
*
* The attributes should be in attribute/column order, as in
* gtk_cell_layout_add_attribute(). All existing attributes are
* removed, and replaced with the new attributes.
*/
void
gtk_cell_layout_set_attributes (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
...)
{
va_list args;
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
va_start (args, cell);
gtk_cell_layout_set_attributesv (cell_layout, cell, args);
va_end (args);
}
/**
* gtk_cell_layout_add_attribute:
* @cell_layout: a #GtkCellLayout
* @cell: a #GtkCellRenderer
* @attribute: an attribute on the renderer
* @column: the column position on the model to get the attribute from
*
* Adds an attribute mapping to the list in @cell_layout.
*
* The @column is the column of the model to get a value from, and the
* @attribute is the parameter on @cell to be set from the value. So for
* example if column 2 of the model contains strings, you could have the
* “text” attribute of a #GtkCellRendererText get its values from column 2.
*/
void
gtk_cell_layout_add_attribute (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
const char *attribute,
int column)
{
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (attribute != NULL);
g_return_if_fail (column >= 0);
GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->add_attribute (cell_layout, cell, attribute, column);
}
/**
* gtk_cell_layout_set_cell_data_func:
* @cell_layout: a #GtkCellLayout
* @cell: a #GtkCellRenderer
* @func: (allow-none): the #GtkCellLayoutDataFunc to use, or %NULL
* @func_data: (closure): user data for @func
* @destroy: destroy notify for @func_data
*
* Sets the #GtkCellLayoutDataFunc to use for @cell_layout.
*
* This function is used instead of the standard attributes mapping
* for setting the column value, and should set the value of @cell_layout’s
* cell renderer(s) as appropriate.
*
* @func may be %NULL to remove a previously set function.
*/
void
gtk_cell_layout_set_cell_data_func (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy)
{
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
GTK_CELL_LAYOUT_GET_IFACE
(cell_layout)->set_cell_data_func (cell_layout, cell, func, func_data, destroy);
}
/**
* gtk_cell_layout_clear_attributes:
* @cell_layout: a #GtkCellLayout
* @cell: a #GtkCellRenderer to clear the attribute mapping on
*
* Clears all existing attributes previously set with
* gtk_cell_layout_set_attributes().
*/
void
gtk_cell_layout_clear_attributes (GtkCellLayout *cell_layout,
GtkCellRenderer *cell)
{
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->clear_attributes (cell_layout, cell);
}
/**
* gtk_cell_layout_reorder:
* @cell_layout: a #GtkCellLayout
* @cell: a #GtkCellRenderer to reorder
* @position: new position to insert @cell at
*
* Re-inserts @cell at @position.
*
* Note that @cell has already to be packed into @cell_layout
* for this to function properly.
*/
void
gtk_cell_layout_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
int position)
{
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->reorder (cell_layout, cell, position);
}
/**
* gtk_cell_layout_get_cells:
* @cell_layout: a #GtkCellLayout
*
* Returns the cell renderers which have been added to @cell_layout.
*
* Returns: (element-type GtkCellRenderer) (transfer container):
* a list of cell renderers. The list, but not the renderers has
* been newly allocated and should be freed with g_list_free()
* when no longer needed.
*/
GList *
gtk_cell_layout_get_cells (GtkCellLayout *cell_layout)
{
g_return_val_if_fail (GTK_IS_CELL_LAYOUT (cell_layout), NULL);
return GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->get_cells (cell_layout);
}
/**
* gtk_cell_layout_get_area:
* @cell_layout: a #GtkCellLayout
*
* Returns the underlying #GtkCellArea which might be @cell_layout
* if called on a #GtkCellArea or might be %NULL if no #GtkCellArea
* is used by @cell_layout.
*
* Returns: (transfer none) (nullable): the cell area used by @cell_layout,
* or %NULL in case no cell area is used.
*/
GtkCellArea *
gtk_cell_layout_get_area (GtkCellLayout *cell_layout)
{
GtkCellLayoutIface *iface;
g_return_val_if_fail (GTK_IS_CELL_LAYOUT (cell_layout), NULL);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_area)
return iface->get_area (cell_layout);
return NULL;
}
/* Attribute parsing */
typedef struct {
GtkCellLayout *cell_layout;
GtkCellRenderer *renderer;
GtkBuilder *builder;
char *attr_name;
GString *string;
} AttributesSubParserData;
static void
attributes_start_element (GtkBuildableParseContext *context,
const char *element_name,
const char **names,
const char **values,
gpointer user_data,
GError **error)
{
AttributesSubParserData *data = (AttributesSubParserData*)user_data;
if (strcmp (element_name, "attribute") == 0)
{
const char *name;
if (!_gtk_builder_check_parent (data->builder, context, "attributes", error))
return;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
data->attr_name = g_strdup (name);
}
else if (strcmp (element_name, "attributes") == 0)
{
if (!_gtk_builder_check_parent (data->builder, context, "child", error))
return;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_INVALID, NULL, NULL,
G_MARKUP_COLLECT_INVALID))
_gtk_builder_prefix_error (data->builder, context, error);
}
else
{
_gtk_builder_error_unhandled_tag (data->builder, context,
"GtkCellLayout", element_name,
error);
}
}
static void
attributes_text_element (GtkBuildableParseContext *context,
const char *text,
gsize text_len,
gpointer user_data,
GError **error)
{
AttributesSubParserData *data = (AttributesSubParserData*)user_data;
if (data->attr_name)
g_string_append_len (data->string, text, text_len);
}
static void
attributes_end_element (GtkBuildableParseContext *context,
const char *element_name,
gpointer user_data,
GError **error)
{
AttributesSubParserData *data = (AttributesSubParserData*)user_data;
GValue val = G_VALUE_INIT;
if (!data->attr_name)
return;
if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_INT, data->string->str, &val, error))
{
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
gtk_cell_layout_add_attribute (data->cell_layout,
data->renderer,
data->attr_name,
g_value_get_int (&val));
g_free (data->attr_name);
data->attr_name = NULL;
g_string_set_size (data->string, 0);
}
static const GtkBuildableParser attributes_parser =
{
attributes_start_element,
attributes_end_element,
attributes_text_element
};
/* Cell packing parsing */
static void
gtk_cell_layout_buildable_set_cell_property (GtkCellArea *area,
GtkBuilder *builder,
GtkCellRenderer *cell,
char *name,
const char *value)
{
GParamSpec *pspec;
GValue gvalue = G_VALUE_INIT;
GError *error = NULL;
pspec = gtk_cell_area_class_find_cell_property (GTK_CELL_AREA_GET_CLASS (area), name);
if (!pspec)
{
g_warning ("%s does not have a property called %s",
g_type_name (G_OBJECT_TYPE (area)), name);
return;
}
if (!gtk_builder_value_from_string (builder, pspec, value, &gvalue, &error))
{
g_warning ("Could not read property %s:%s with value %s of type %s: %s",
g_type_name (G_OBJECT_TYPE (area)),
name,
value,
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
error->message);
g_error_free (error);
return;
}
gtk_cell_area_cell_set_property (area, cell, name, &gvalue);
g_value_unset (&gvalue);
}
typedef struct {
GtkBuilder *builder;
GtkCellLayout *cell_layout;
GtkCellRenderer *renderer;
GString *string;
char *cell_prop_name;
char *context;
gboolean translatable;
} CellPackingSubParserData;
static void
cell_packing_start_element (GtkBuildableParseContext *context,
const char *element_name,
const char **names,
const char **values,
gpointer user_data,
GError **error)
{
CellPackingSubParserData *data = (CellPackingSubParserData*)user_data;
if (strcmp (element_name, "property") == 0)
{
const char *name;
gboolean translatable = FALSE;
const char *ctx = NULL;
if (!_gtk_builder_check_parent (data->builder, context, "cell-packing", error))
return;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "translatable", &translatable,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "comments", NULL,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "context", &ctx,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
data->cell_prop_name = g_strdup (name);
data->translatable = translatable;
data->context = g_strdup (ctx);
}
else if (strcmp (element_name, "cell-packing") == 0)
{
if (!_gtk_builder_check_parent (data->builder, context, "child", error))
return;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_INVALID, NULL, NULL,
G_MARKUP_COLLECT_INVALID))
_gtk_builder_prefix_error (data->builder, context, error);
}
else
{
_gtk_builder_error_unhandled_tag (data->builder, context,
"GtkCellLayout", element_name,
error);
}
}
static void
cell_packing_text_element (GtkBuildableParseContext *context,
const char *text,
gsize text_len,
gpointer user_data,
GError **error)
{
CellPackingSubParserData *data = (CellPackingSubParserData*)user_data;
if (data->cell_prop_name)
g_string_append_len (data->string, text, text_len);
}
static void
cell_packing_end_element (GtkBuildableParseContext *context,
const char *element_name,
gpointer user_data,
GError **error)
{
CellPackingSubParserData *data = (CellPackingSubParserData*)user_data;
GtkCellArea *area;
area = gtk_cell_layout_get_area (data->cell_layout);
if (area)
{
/* translate the string */
if (data->string->len && data->translatable)
{
const char *translated;
const char * domain;
domain = gtk_builder_get_translation_domain (data->builder);
translated = _gtk_builder_parser_translate (domain,
data->context,
data->string->str);
g_string_assign (data->string, translated);
}
if (data->cell_prop_name)
gtk_cell_layout_buildable_set_cell_property (area,
data->builder,
data->renderer,
data->cell_prop_name,
data->string->str);
}
else
g_warning ("%s does not have an internal GtkCellArea class and cannot apply child cell properties",
g_type_name (G_OBJECT_TYPE (data->cell_layout)));
g_string_set_size (data->string, 0);
g_free (data->cell_prop_name);
g_free (data->context);
data->cell_prop_name = NULL;
data->context = NULL;
data->translatable = FALSE;
}
static const GtkBuildableParser cell_packing_parser =
{
cell_packing_start_element,
cell_packing_end_element,
cell_packing_text_element
};
gboolean
_gtk_cell_layout_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
GtkBuildableParser *parser,
gpointer *data)
{
AttributesSubParserData *attr_data;
CellPackingSubParserData *packing_data;
if (!child)
return FALSE;
if (strcmp (tagname, "attributes") == 0)
{
attr_data = g_slice_new0 (AttributesSubParserData);
attr_data->cell_layout = GTK_CELL_LAYOUT (buildable);
attr_data->renderer = GTK_CELL_RENDERER (child);
attr_data->builder = builder;
attr_data->attr_name = NULL;
attr_data->string = g_string_new ("");
*parser = attributes_parser;
*data = attr_data;
return TRUE;
}
else if (strcmp (tagname, "cell-packing") == 0)
{
packing_data = g_slice_new0 (CellPackingSubParserData);
packing_data->string = g_string_new ("");
packing_data->builder = builder;
packing_data->cell_layout = GTK_CELL_LAYOUT (buildable);
packing_data->renderer = GTK_CELL_RENDERER (child);
*parser = cell_packing_parser;
*data = packing_data;
return TRUE;
}
return FALSE;
}
gboolean
_gtk_cell_layout_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
gpointer *data)
{
AttributesSubParserData *attr_data;
CellPackingSubParserData *packing_data;
if (strcmp (tagname, "attributes") == 0)
{
attr_data = (AttributesSubParserData*)data;
g_assert (!attr_data->attr_name);
g_string_free (attr_data->string, TRUE);
g_slice_free (AttributesSubParserData, attr_data);
return TRUE;
}
else if (strcmp (tagname, "cell-packing") == 0)
{
packing_data = (CellPackingSubParserData *)data;
g_string_free (packing_data->string, TRUE);
g_slice_free (CellPackingSubParserData, packing_data);
return TRUE;
}
return FALSE;
}
void
_gtk_cell_layout_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
g_return_if_fail (GTK_IS_CELL_LAYOUT (buildable));
g_return_if_fail (GTK_IS_CELL_RENDERER (child));
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (buildable), GTK_CELL_RENDERER (child), FALSE);
}
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