forked from AuroraMiddleware/gtk
cad41833a2
Since GtkCellArea delegate does all the work, cell layout widgets who use a GtkCellArea internally only have to implement the _get_area() method, this just reduces code to forward the calls over the the internal cell area.
718 lines
19 KiB
C
718 lines
19 KiB
C
/* gtkcelllayout.c
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* Copyright (C) 2003 Kristian Rietveld <kris@gtk.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "gtkcelllayout.h"
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#include "gtkbuilderprivate.h"
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#include "gtkintl.h"
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typedef GtkCellLayoutIface GtkCellLayoutInterface;
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G_DEFINE_INTERFACE (GtkCellLayout, gtk_cell_layout, G_TYPE_OBJECT);
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static void
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gtk_cell_layout_default_init (GtkCellLayoutInterface *iface)
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{
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}
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/**
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* gtk_cell_layout_pack_start:
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* @cell_layout: A #GtkCellLayout.
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* @cell: A #GtkCellRenderer.
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* @expand: %TRUE if @cell is to be given extra space allocated to @cell_layout.
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*
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* Packs the @cell into the beginning of @cell_layout. If @expand is %FALSE,
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* then the @cell is allocated no more space than it needs. Any unused space
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* is divided evenly between cells for which @expand is %TRUE.
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*
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* Note that reusing the same cell renderer is not supported.
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*
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* Since: 2.4
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*/
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void
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gtk_cell_layout_pack_start (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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gboolean expand)
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{
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GtkCellLayoutIface *iface;
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GtkCellArea *area;
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g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
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g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->pack_start)
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iface->pack_start (cell_layout, cell, expand);
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else
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{
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area = iface->get_area (cell_layout);
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if (area)
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gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (area), cell, expand);
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}
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}
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/**
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* gtk_cell_layout_pack_end:
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* @cell_layout: A #GtkCellLayout.
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* @cell: A #GtkCellRenderer.
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* @expand: %TRUE if @cell is to be given extra space allocated to @cell_layout.
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*
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* Adds the @cell to the end of @cell_layout. If @expand is %FALSE, then the
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* @cell is allocated no more space than it needs. Any unused space is
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* divided evenly between cells for which @expand is %TRUE.
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*
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* Note that reusing the same cell renderer is not supported.
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*
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* Since: 2.4
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*/
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void
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gtk_cell_layout_pack_end (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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gboolean expand)
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{
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GtkCellLayoutIface *iface;
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GtkCellArea *area;
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g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
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g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->pack_end)
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iface->pack_end (cell_layout, cell, expand);
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else
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{
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area = iface->get_area (cell_layout);
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if (area)
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gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (area), cell, expand);
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}
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}
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/**
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* gtk_cell_layout_clear:
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* @cell_layout: A #GtkCellLayout.
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*
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* Unsets all the mappings on all renderers on @cell_layout and
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* removes all renderers from @cell_layout.
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*
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* Since: 2.4
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*/
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void
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gtk_cell_layout_clear (GtkCellLayout *cell_layout)
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{
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GtkCellLayoutIface *iface;
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GtkCellArea *area;
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g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->clear)
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iface->clear (cell_layout);
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else
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{
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area = iface->get_area (cell_layout);
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if (area)
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gtk_cell_layout_clear (GTK_CELL_LAYOUT (area));
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}
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}
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static void
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gtk_cell_layout_set_attributesv (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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va_list args)
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{
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gchar *attribute;
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gint column;
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GtkCellLayoutIface *iface;
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GtkCellArea *area;
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attribute = va_arg (args, gchar *);
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->get_area)
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area = iface->get_area (cell_layout);
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if (iface->clear_attributes)
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iface->clear_attributes (cell_layout, cell);
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else if (area)
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gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (area), cell);
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while (attribute != NULL)
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{
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column = va_arg (args, gint);
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if (iface->add_attribute)
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iface->add_attribute (cell_layout, cell, attribute, column);
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else if (area)
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gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (area), cell, attribute, column);
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attribute = va_arg (args, gchar *);
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}
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}
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/**
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* gtk_cell_layout_set_attributes:
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* @cell_layout: A #GtkCellLayout.
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* @cell: A #GtkCellRenderer.
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* @Varargs: A %NULL-terminated list of attributes.
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*
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* Sets the attributes in list as the attributes of @cell_layout. The
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* attributes should be in attribute/column order, as in
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* gtk_cell_layout_add_attribute(). All existing attributes are removed, and
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* replaced with the new attributes.
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*
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* Since: 2.4
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*/
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void
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gtk_cell_layout_set_attributes (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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...)
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{
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va_list args;
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g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
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g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
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va_start (args, cell);
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gtk_cell_layout_set_attributesv (cell_layout, cell, args);
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va_end (args);
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}
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/**
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* gtk_cell_layout_add_attribute:
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* @cell_layout: A #GtkCellLayout.
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* @cell: A #GtkCellRenderer.
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* @attribute: An attribute on the renderer.
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* @column: The column position on the model to get the attribute from.
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*
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* Adds an attribute mapping to the list in @cell_layout. The @column is the
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* column of the model to get a value from, and the @attribute is the
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* parameter on @cell to be set from the value. So for example if column 2
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* of the model contains strings, you could have the "text" attribute of a
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* #GtkCellRendererText get its values from column 2.
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*
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* Since: 2.4
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*/
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void
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gtk_cell_layout_add_attribute (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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const gchar *attribute,
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gint column)
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{
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GtkCellLayoutIface *iface;
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GtkCellArea *area;
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g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
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g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
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g_return_if_fail (attribute != NULL);
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g_return_if_fail (column >= 0);
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->add_attribute)
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iface->add_attribute (cell_layout,
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cell,
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attribute,
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column);
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else
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{
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area = iface->get_area (cell_layout);
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if (area)
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gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (area), cell, attribute, column);
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}
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}
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/**
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* gtk_cell_layout_set_cell_data_func:
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* @cell_layout: A #GtkCellLayout.
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* @cell: A #GtkCellRenderer.
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* @func: The #GtkCellLayoutDataFunc to use.
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* @func_data: The user data for @func.
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* @destroy: The destroy notification for @func_data.
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*
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* Sets the #GtkCellLayoutDataFunc to use for @cell_layout. This function
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* is used instead of the standard attributes mapping for setting the
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* column value, and should set the value of @cell_layout's cell renderer(s)
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* as appropriate. @func may be %NULL to remove and older one.
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*
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* Since: 2.4
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*/
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void
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gtk_cell_layout_set_cell_data_func (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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GtkCellLayoutDataFunc func,
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gpointer func_data,
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GDestroyNotify destroy)
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{
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GtkCellLayoutIface *iface;
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GtkCellArea *area;
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g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
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g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->set_cell_data_func)
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iface->set_cell_data_func (cell_layout,
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cell,
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func,
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func_data,
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destroy);
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else
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{
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area = iface->get_area (cell_layout);
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if (area)
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gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (area), cell, func, func_data, destroy);
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}
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}
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/**
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* gtk_cell_layout_clear_attributes:
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* @cell_layout: A #GtkCellLayout.
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* @cell: A #GtkCellRenderer to clear the attribute mapping on.
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*
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* Clears all existing attributes previously set with
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* gtk_cell_layout_set_attributes().
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*
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* Since: 2.4
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*/
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void
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gtk_cell_layout_clear_attributes (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell)
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{
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GtkCellLayoutIface *iface;
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GtkCellArea *area;
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g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
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g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->clear_attributes)
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iface->clear_attributes (cell_layout, cell);
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else
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{
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area = iface->get_area (cell_layout);
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if (area)
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gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (area), cell);
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}
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}
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/**
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* gtk_cell_layout_reorder:
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* @cell_layout: A #GtkCellLayout.
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* @cell: A #GtkCellRenderer to reorder.
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* @position: New position to insert @cell at.
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*
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* Re-inserts @cell at @position. Note that @cell has already to be packed
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* into @cell_layout for this to function properly.
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*
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* Since: 2.4
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*/
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void
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gtk_cell_layout_reorder (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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gint position)
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{
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GtkCellLayoutIface *iface;
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GtkCellArea *area;
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g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
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g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->reorder)
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iface->reorder (cell_layout, cell, position);
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else
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{
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area = iface->get_area (cell_layout);
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if (area)
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gtk_cell_layout_reorder (GTK_CELL_LAYOUT (area), cell, position);
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}
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}
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/**
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* gtk_cell_layout_get_cells:
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* @cell_layout: a #GtkCellLayout
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*
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* Returns the cell renderers which have been added to @cell_layout.
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*
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* Return value: (element-type GtkCellRenderer) (transfer container): a list of cell renderers. The list, but not the
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* renderers has been newly allocated and should be freed with
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* g_list_free() when no longer needed.
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*
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* Since: 2.12
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*/
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GList *
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gtk_cell_layout_get_cells (GtkCellLayout *cell_layout)
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{
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GtkCellLayoutIface *iface;
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GtkCellArea *area;
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g_return_val_if_fail (GTK_IS_CELL_LAYOUT (cell_layout), NULL);
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->get_cells)
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return iface->get_cells (cell_layout);
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else
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{
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area = iface->get_area (cell_layout);
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if (area)
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return gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (area));
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}
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return NULL;
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}
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/**
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* gtk_cell_layout_get_area:
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* @cell_layout: a #GtkCellLayout
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*
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* Returns the underlying #GtkCellArea which might be @cell_layout if called on a #GtkCellArea or
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* might be %NULL if no #GtkCellArea is used by @cell_layout.
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*
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* Return value: (transfer none): a list of cell renderers. The list, but not the
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* renderers has been newly allocated and should be freed with
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* g_list_free() when no longer needed.
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*
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* Since: 3.0
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*/
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GtkCellArea *
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gtk_cell_layout_get_area (GtkCellLayout *cell_layout)
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{
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GtkCellLayoutIface *iface;
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g_return_val_if_fail (GTK_IS_CELL_LAYOUT (cell_layout), NULL);
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iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
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if (iface->get_area)
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return iface->get_area (cell_layout);
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return NULL;
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}
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/* Attribute parsing */
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typedef struct {
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GtkCellLayout *cell_layout;
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GtkCellRenderer *renderer;
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gchar *attr_name;
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} AttributesSubParserData;
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static void
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attributes_start_element (GMarkupParseContext *context,
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const gchar *element_name,
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const gchar **names,
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const gchar **values,
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gpointer user_data,
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GError **error)
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{
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AttributesSubParserData *parser_data = (AttributesSubParserData*)user_data;
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guint i;
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if (strcmp (element_name, "attribute") == 0)
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{
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for (i = 0; names[i]; i++)
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if (strcmp (names[i], "name") == 0)
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parser_data->attr_name = g_strdup (values[i]);
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}
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else if (strcmp (element_name, "attributes") == 0)
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return;
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else
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g_warning ("Unsupported tag for GtkCellLayout: %s\n", element_name);
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}
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static void
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attributes_text_element (GMarkupParseContext *context,
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const gchar *text,
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gsize text_len,
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gpointer user_data,
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GError **error)
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{
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AttributesSubParserData *parser_data = (AttributesSubParserData*)user_data;
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glong l;
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gchar *endptr;
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gchar *string;
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if (!parser_data->attr_name)
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return;
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string = g_strndup (text, text_len);
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errno = 0;
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l = g_ascii_strtoll (string, &endptr, 0);
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if (errno || endptr == string)
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{
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g_set_error (error,
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GTK_BUILDER_ERROR,
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GTK_BUILDER_ERROR_INVALID_VALUE,
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"Could not parse integer `%s'",
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string);
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g_free (string);
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return;
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}
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g_free (string);
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gtk_cell_layout_add_attribute (parser_data->cell_layout,
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parser_data->renderer,
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parser_data->attr_name, l);
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g_free (parser_data->attr_name);
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parser_data->attr_name = NULL;
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}
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static const GMarkupParser attributes_parser =
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{
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attributes_start_element,
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NULL,
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attributes_text_element,
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};
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/* Cell packing parsing */
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static void
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gtk_cell_layout_buildable_set_cell_property (GtkCellArea *area,
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GtkBuilder *builder,
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GtkCellRenderer *cell,
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gchar *name,
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const gchar *value)
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{
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GParamSpec *pspec;
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GValue gvalue = { 0, };
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GError *error = NULL;
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pspec = gtk_cell_area_class_find_cell_property (GTK_CELL_AREA_GET_CLASS (area), name);
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if (!pspec)
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{
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g_warning ("%s does not have a property called %s",
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g_type_name (G_OBJECT_TYPE (area)), name);
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return;
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}
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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;
|
|
gchar *cell_prop_name;
|
|
gchar *context;
|
|
gboolean translatable;
|
|
} CellPackingSubParserData;
|
|
|
|
static void
|
|
cell_packing_start_element (GMarkupParseContext *context,
|
|
const gchar *element_name,
|
|
const gchar **names,
|
|
const gchar **values,
|
|
gpointer user_data,
|
|
GError **error)
|
|
{
|
|
CellPackingSubParserData *parser_data = (CellPackingSubParserData*)user_data;
|
|
guint i;
|
|
|
|
if (strcmp (element_name, "property") == 0)
|
|
{
|
|
for (i = 0; names[i]; i++)
|
|
if (strcmp (names[i], "name") == 0)
|
|
parser_data->cell_prop_name = g_strdup (values[i]);
|
|
else if (strcmp (names[i], "translatable") == 0)
|
|
{
|
|
if (!_gtk_builder_boolean_from_string (values[i],
|
|
&parser_data->translatable,
|
|
error))
|
|
return;
|
|
}
|
|
else if (strcmp (names[i], "comments") == 0)
|
|
; /* for translators */
|
|
else if (strcmp (names[i], "context") == 0)
|
|
parser_data->context = g_strdup (values[i]);
|
|
else
|
|
g_warning ("Unsupported attribute for GtkCellLayout Cell "
|
|
"property: %s\n", names[i]);
|
|
}
|
|
else if (strcmp (element_name, "cell-packing") == 0)
|
|
return;
|
|
else
|
|
g_warning ("Unsupported tag for GtkCellLayout: %s\n", element_name);
|
|
}
|
|
|
|
static void
|
|
cell_packing_text_element (GMarkupParseContext *context,
|
|
const gchar *text,
|
|
gsize text_len,
|
|
gpointer user_data,
|
|
GError **error)
|
|
{
|
|
CellPackingSubParserData *parser_data = (CellPackingSubParserData*)user_data;
|
|
GtkCellArea *area;
|
|
gchar* value;
|
|
|
|
if (!parser_data->cell_prop_name)
|
|
return;
|
|
|
|
if (parser_data->translatable && text_len)
|
|
{
|
|
const gchar* domain;
|
|
domain = gtk_builder_get_translation_domain (parser_data->builder);
|
|
|
|
value = _gtk_builder_parser_translate (domain,
|
|
parser_data->context,
|
|
text);
|
|
}
|
|
else
|
|
{
|
|
value = g_strdup (text);
|
|
}
|
|
|
|
area = gtk_cell_layout_get_area (parser_data->cell_layout);
|
|
|
|
if (!area)
|
|
{
|
|
g_warning ("%s does not have an internal GtkCellArea class and cannot apply child cell properties",
|
|
g_type_name (G_OBJECT_TYPE (parser_data->cell_layout)));
|
|
return;
|
|
}
|
|
|
|
gtk_cell_layout_buildable_set_cell_property (area,
|
|
parser_data->builder,
|
|
parser_data->renderer,
|
|
parser_data->cell_prop_name,
|
|
value);
|
|
|
|
g_free (parser_data->cell_prop_name);
|
|
g_free (parser_data->context);
|
|
g_free (value);
|
|
parser_data->cell_prop_name = NULL;
|
|
parser_data->context = NULL;
|
|
parser_data->translatable = FALSE;
|
|
}
|
|
|
|
static const GMarkupParser cell_packing_parser =
|
|
{
|
|
cell_packing_start_element,
|
|
NULL,
|
|
cell_packing_text_element,
|
|
};
|
|
|
|
gboolean
|
|
_gtk_cell_layout_buildable_custom_tag_start (GtkBuildable *buildable,
|
|
GtkBuilder *builder,
|
|
GObject *child,
|
|
const gchar *tagname,
|
|
GMarkupParser *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->attr_name = NULL;
|
|
|
|
*parser = attributes_parser;
|
|
*data = attr_data;
|
|
return TRUE;
|
|
}
|
|
else if (strcmp (tagname, "cell-packing") == 0)
|
|
{
|
|
packing_data = g_slice_new0 (CellPackingSubParserData);
|
|
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;
|
|
}
|
|
|
|
void
|
|
_gtk_cell_layout_buildable_custom_tag_end (GtkBuildable *buildable,
|
|
GtkBuilder *builder,
|
|
GObject *child,
|
|
const gchar *tagname,
|
|
gpointer *data)
|
|
{
|
|
AttributesSubParserData *attr_data;
|
|
|
|
if (strcmp (tagname, "attributes") == 0)
|
|
{
|
|
attr_data = (AttributesSubParserData*)data;
|
|
g_assert (!attr_data->attr_name);
|
|
g_slice_free (AttributesSubParserData, attr_data);
|
|
return;
|
|
}
|
|
else if (strcmp (tagname, "cell-packing") == 0)
|
|
{
|
|
g_slice_free (CellPackingSubParserData, (gpointer)data);
|
|
return;
|
|
}
|
|
}
|
|
|
|
void
|
|
_gtk_cell_layout_buildable_add_child (GtkBuildable *buildable,
|
|
GtkBuilder *builder,
|
|
GObject *child,
|
|
const gchar *type)
|
|
{
|
|
GtkCellLayoutIface *iface;
|
|
|
|
g_return_if_fail (GTK_IS_CELL_LAYOUT (buildable));
|
|
g_return_if_fail (GTK_IS_CELL_RENDERER (child));
|
|
|
|
iface = GTK_CELL_LAYOUT_GET_IFACE (buildable);
|
|
g_return_if_fail (iface->pack_start != NULL);
|
|
iface->pack_start (GTK_CELL_LAYOUT (buildable), GTK_CELL_RENDERER (child), FALSE);
|
|
}
|