790 lines
		
	
	
		
			26 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			790 lines
		
	
	
		
			26 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /* GTK - The GIMP Toolkit
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|  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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 Lesser 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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|  * Lesser General Public License for more details.
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|  *
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|  * You should have received a copy of the GNU Lesser General Public
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|  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
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|  */
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| 
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| /*
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|  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
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|  * file for a list of people on the GTK+ Team.  See the ChangeLog
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|  * files for a list of changes.  These files are distributed with
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|  * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
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|  */
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| 
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| /**
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|  * SECTION:gtkalignment
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|  * @Short_description: A widget which controls the alignment and size of its child
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|  * @Title: GtkAlignment
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|  *
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|  * The #GtkAlignment widget controls the alignment and size of its child widget.
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|  * It has four settings: xscale, yscale, xalign, and yalign.
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|  *
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|  * The scale settings are used to specify how much the child widget should
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|  * expand to fill the space allocated to the #GtkAlignment.
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|  * The values can range from 0 (meaning the child doesn't expand at all) to
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|  * 1 (meaning the child expands to fill all of the available space).
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|  *
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|  * The align settings are used to place the child widget within the available
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|  * area. The values range from 0 (top or left) to 1 (bottom or right).
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|  * Of course, if the scale settings are both set to 1, the alignment settings
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|  * have no effect.
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|  *
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|  * <note>
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|  * <para>
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|  * Note that the desired effect can in most cases be achieved by using the
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|  * #GtkWidget:halign, #GtkWidget:valign and #GtkWidget:margin properties
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|  * on the child widget, so #GtkAlignment should not be used in new code.
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|  * </para>
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|  * </note>
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|  */
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| 
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| #include "config.h"
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| #include "gtkalignment.h"
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| #include "gtksizerequest.h"
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| #include "gtkprivate.h"
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| #include "gtkintl.h"
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| 
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| 
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| struct _GtkAlignmentPrivate
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| {
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|   gfloat        xalign;
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|   gfloat        yalign;
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|   gfloat        xscale;
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|   gfloat        yscale;
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| 
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|   guint         padding_bottom;
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|   guint         padding_top;
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|   guint         padding_left;
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|   guint         padding_right;
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| };
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| 
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| enum {
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|   PROP_0,
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| 
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|   PROP_XALIGN,
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|   PROP_YALIGN,
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|   PROP_XSCALE,
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|   PROP_YSCALE,
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| 
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|   PROP_TOP_PADDING,
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|   PROP_BOTTOM_PADDING,
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|   PROP_LEFT_PADDING,
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|   PROP_RIGHT_PADDING
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| };
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| 
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| static void gtk_alignment_size_allocate (GtkWidget         *widget,
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| 					 GtkAllocation     *allocation);
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| static void gtk_alignment_set_property (GObject         *object,
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|                                         guint            prop_id,
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|                                         const GValue    *value,
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|                                         GParamSpec      *pspec);
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| static void gtk_alignment_get_property (GObject         *object,
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|                                         guint            prop_id,
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|                                         GValue          *value,
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|                                         GParamSpec      *pspec);
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| 
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| static void gtk_alignment_get_preferred_width          (GtkWidget           *widget,
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|                                                         gint                *minimum_size,
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|                                                         gint                *natural_size);
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| static void gtk_alignment_get_preferred_height         (GtkWidget           *widget,
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|                                                         gint                *minimum_size,
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|                                                         gint                *natural_size);
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| static void gtk_alignment_get_preferred_width_for_height (GtkWidget           *widget,
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| 							  gint                 for_size,
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| 							  gint                *minimum_size,
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| 							  gint                *natural_size);
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| static void gtk_alignment_get_preferred_height_for_width (GtkWidget           *widget,
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| 							  gint                 for_size,
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| 							  gint                *minimum_size,
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| 							  gint                *natural_size);
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| 
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| G_DEFINE_TYPE (GtkAlignment, gtk_alignment, GTK_TYPE_BIN)
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| 
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| static void
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| gtk_alignment_class_init (GtkAlignmentClass *class)
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| {
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|   GObjectClass *gobject_class;
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|   GtkWidgetClass *widget_class;
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| 
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|   gobject_class = (GObjectClass*) class;
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|   widget_class = (GtkWidgetClass*) class;
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|   
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|   gobject_class->set_property = gtk_alignment_set_property;
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|   gobject_class->get_property = gtk_alignment_get_property;
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| 
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|   widget_class->size_allocate        = gtk_alignment_size_allocate;
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|   widget_class->get_preferred_width  = gtk_alignment_get_preferred_width;
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|   widget_class->get_preferred_height = gtk_alignment_get_preferred_height;
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|   widget_class->get_preferred_width_for_height = gtk_alignment_get_preferred_width_for_height;
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|   widget_class->get_preferred_height_for_width = gtk_alignment_get_preferred_height_for_width;
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| 
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|   g_object_class_install_property (gobject_class,
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|                                    PROP_XALIGN,
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|                                    g_param_spec_float("xalign",
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|                                                       P_("Horizontal alignment"),
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|                                                       P_("Horizontal position of child in available space. 0.0 is left aligned, 1.0 is right aligned"),
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|                                                       0.0,
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|                                                       1.0,
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|                                                       0.5,
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|                                                       GTK_PARAM_READWRITE));
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|    
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|   g_object_class_install_property (gobject_class,
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|                                    PROP_YALIGN,
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|                                    g_param_spec_float("yalign",
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|                                                       P_("Vertical alignment"),
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|                                                       P_("Vertical position of child in available space. 0.0 is top aligned, 1.0 is bottom aligned"),
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|                                                       0.0,
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|                                                       1.0,
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| 						      0.5,
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|                                                       GTK_PARAM_READWRITE));
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|   g_object_class_install_property (gobject_class,
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|                                    PROP_XSCALE,
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|                                    g_param_spec_float("xscale",
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|                                                       P_("Horizontal scale"),
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|                                                       P_("If available horizontal space is bigger than needed for the child, how much of it to use for the child. 0.0 means none, 1.0 means all"),
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|                                                       0.0,
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|                                                       1.0,
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|                                                       1.0,
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|                                                       GTK_PARAM_READWRITE));
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|   g_object_class_install_property (gobject_class,
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|                                    PROP_YSCALE,
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|                                    g_param_spec_float("yscale",
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|                                                       P_("Vertical scale"),
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|                                                       P_("If available vertical space is bigger than needed for the child, how much of it to use for the child. 0.0 means none, 1.0 means all"),
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|                                                       0.0,
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|                                                       1.0,
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|                                                       1.0,
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|                                                       GTK_PARAM_READWRITE));
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| 
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| 
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| /**
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|  * GtkAlignment:top-padding:
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|  *
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|  * The padding to insert at the top of the widget.
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|  *
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|  * Since: 2.4
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|  */
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|   g_object_class_install_property (gobject_class,
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|                                    PROP_TOP_PADDING,
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|                                    g_param_spec_uint("top-padding",
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|                                                       P_("Top Padding"),
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|                                                       P_("The padding to insert at the top of the widget."),
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|                                                       0,
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|                                                       G_MAXINT,
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|                                                       0,
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|                                                       GTK_PARAM_READWRITE));
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| 
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| /**
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|  * GtkAlignment:bottom-padding:
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|  *
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|  * The padding to insert at the bottom of the widget.
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|  *
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|  * Since: 2.4
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|  */
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|   g_object_class_install_property (gobject_class,
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|                                    PROP_BOTTOM_PADDING,
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|                                    g_param_spec_uint("bottom-padding",
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|                                                       P_("Bottom Padding"),
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|                                                       P_("The padding to insert at the bottom of the widget."),
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|                                                       0,
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|                                                       G_MAXINT,
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|                                                       0,
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|                                                       GTK_PARAM_READWRITE));
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| 
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| /**
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|  * GtkAlignment:left-padding:
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|  *
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|  * The padding to insert at the left of the widget.
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|  *
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|  * Since: 2.4
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|  */
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|   g_object_class_install_property (gobject_class,
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|                                    PROP_LEFT_PADDING,
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|                                    g_param_spec_uint("left-padding",
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|                                                       P_("Left Padding"),
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|                                                       P_("The padding to insert at the left of the widget."),
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|                                                       0,
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|                                                       G_MAXINT,
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|                                                       0,
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|                                                       GTK_PARAM_READWRITE));
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| 
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| /**
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|  * GtkAlignment:right-padding:
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|  *
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|  * The padding to insert at the right of the widget.
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|  *
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|  * Since: 2.4
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|  */
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|   g_object_class_install_property (gobject_class,
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|                                    PROP_RIGHT_PADDING,
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|                                    g_param_spec_uint("right-padding",
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|                                                       P_("Right Padding"),
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|                                                       P_("The padding to insert at the right of the widget."),
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|                                                       0,
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|                                                       G_MAXINT,
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|                                                       0,
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|                                                       GTK_PARAM_READWRITE));
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| 
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|   g_type_class_add_private (gobject_class, sizeof (GtkAlignmentPrivate));
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| }
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| 
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| static void
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| gtk_alignment_init (GtkAlignment *alignment)
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| {
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|   GtkAlignmentPrivate *priv;
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| 
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|   alignment->priv = G_TYPE_INSTANCE_GET_PRIVATE (alignment,
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|                                                  GTK_TYPE_ALIGNMENT,
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|                                                  GtkAlignmentPrivate);
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|   priv = alignment->priv;
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| 
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|   gtk_widget_set_has_window (GTK_WIDGET (alignment), FALSE);
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|   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (alignment), FALSE);
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| 
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|   priv->xalign = 0.5;
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|   priv->yalign = 0.5;
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|   priv->xscale = 1.0;
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|   priv->yscale = 1.0;
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| 
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|   /* Initialize padding with default values: */
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|   priv->padding_top = 0;
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|   priv->padding_bottom = 0;
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|   priv->padding_left = 0;
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|   priv->padding_right = 0;
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| }
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| 
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| /**
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|  * gtk_alignment_new:
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|  * @xalign: the horizontal alignment of the child widget, from 0 (left) to 1
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|  *  (right).
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|  * @yalign: the vertical alignment of the child widget, from 0 (top) to 1
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|  *  (bottom).
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|  * @xscale: the amount that the child widget expands horizontally to fill up
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|  *  unused space, from 0 to 1.
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|  *  A value of 0 indicates that the child widget should never expand.
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|  *  A value of 1 indicates that the child widget will expand to fill all of the
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|  *  space allocated for the #GtkAlignment.
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|  * @yscale: the amount that the child widget expands vertically to fill up
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|  *  unused space, from 0 to 1. The values are similar to @xscale.
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|  *
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|  * Creates a new #GtkAlignment.
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|  *
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|  * Returns: the new #GtkAlignment.
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|  */
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| GtkWidget*
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| gtk_alignment_new (gfloat xalign,
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| 		   gfloat yalign,
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| 		   gfloat xscale,
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| 		   gfloat yscale)
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| {
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|   GtkAlignment *alignment;
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|   GtkAlignmentPrivate *priv;
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| 
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|   alignment = g_object_new (GTK_TYPE_ALIGNMENT, NULL);
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| 
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|   priv = alignment->priv;
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| 
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|   priv->xalign = CLAMP (xalign, 0.0, 1.0);
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|   priv->yalign = CLAMP (yalign, 0.0, 1.0);
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|   priv->xscale = CLAMP (xscale, 0.0, 1.0);
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|   priv->yscale = CLAMP (yscale, 0.0, 1.0);
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| 
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|   return GTK_WIDGET (alignment);
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| }
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| 
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| static void
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| gtk_alignment_set_property (GObject         *object,
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| 			    guint            prop_id,
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| 			    const GValue    *value,
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| 			    GParamSpec      *pspec)
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| {
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|   GtkAlignment *alignment = GTK_ALIGNMENT (object);
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|   GtkAlignmentPrivate *priv = alignment->priv;
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| 
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|   switch (prop_id)
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|     {
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|     case PROP_XALIGN:
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|       gtk_alignment_set (alignment,
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| 			 g_value_get_float (value),
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| 			 priv->yalign,
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| 			 priv->xscale,
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| 			 priv->yscale);
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|       break;
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|     case PROP_YALIGN:
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|       gtk_alignment_set (alignment,
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| 			 priv->xalign,
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| 			 g_value_get_float (value),
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| 			 priv->xscale,
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| 			 priv->yscale);
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|       break;
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|     case PROP_XSCALE:
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|       gtk_alignment_set (alignment,
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| 			 priv->xalign,
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| 			 priv->yalign,
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| 			 g_value_get_float (value),
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| 			 priv->yscale);
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|       break;
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|     case PROP_YSCALE:
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|       gtk_alignment_set (alignment,
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| 			 priv->xalign,
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| 			 priv->yalign,
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| 			 priv->xscale,
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| 			 g_value_get_float (value));
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|       break;
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|       
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|     /* Padding: */
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|     case PROP_TOP_PADDING:
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|       gtk_alignment_set_padding (alignment,
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| 			 g_value_get_uint (value),
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| 			 priv->padding_bottom,
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| 			 priv->padding_left,
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| 			 priv->padding_right);
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|       break;
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|     case PROP_BOTTOM_PADDING:
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|       gtk_alignment_set_padding (alignment,
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| 			 priv->padding_top,
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| 			 g_value_get_uint (value),
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| 			 priv->padding_left,
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| 			 priv->padding_right);
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|       break;
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|     case PROP_LEFT_PADDING:
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|       gtk_alignment_set_padding (alignment,
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| 			 priv->padding_top,
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| 			 priv->padding_bottom,
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| 			 g_value_get_uint (value),
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| 			 priv->padding_right);
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|       break;
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|     case PROP_RIGHT_PADDING:
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|       gtk_alignment_set_padding (alignment,
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| 			 priv->padding_top,
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| 			 priv->padding_bottom,
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| 			 priv->padding_left,
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| 			 g_value_get_uint (value));
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|       break;
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|     
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|     default:
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|       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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|       break;
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|     }
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| }
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| 
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| static void
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| gtk_alignment_get_property (GObject         *object,
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| 			    guint            prop_id,
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| 			    GValue          *value,
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| 			    GParamSpec      *pspec)
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| {
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|   GtkAlignment *alignment = GTK_ALIGNMENT (object);
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|   GtkAlignmentPrivate *priv = alignment->priv;
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| 
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|   switch (prop_id)
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|     {
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|     case PROP_XALIGN:
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|       g_value_set_float(value, priv->xalign);
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|       break;
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|     case PROP_YALIGN:
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|       g_value_set_float(value, priv->yalign);
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|       break;
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|     case PROP_XSCALE:
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|       g_value_set_float(value, priv->xscale);
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|       break;
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|     case PROP_YSCALE:
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|       g_value_set_float(value, priv->yscale);
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|       break;
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| 
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|     /* Padding: */
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|     case PROP_TOP_PADDING:
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|       g_value_set_uint (value, priv->padding_top);
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|       break;
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|     case PROP_BOTTOM_PADDING:
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|       g_value_set_uint (value, priv->padding_bottom);
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|       break;
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|     case PROP_LEFT_PADDING:
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|       g_value_set_uint (value, priv->padding_left);
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|       break;
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|     case PROP_RIGHT_PADDING:
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|       g_value_set_uint (value, priv->padding_right);
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|       break;
 | |
|       
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|     default:
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|       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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|       break;
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|     }
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| }
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| 
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| /**
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|  * gtk_alignment_set:
 | |
|  * @alignment: a #GtkAlignment.
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|  * @xalign: the horizontal alignment of the child widget, from 0 (left) to 1
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|  *  (right).
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|  * @yalign: the vertical alignment of the child widget, from 0 (top) to 1
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|  *  (bottom).
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|  * @xscale: the amount that the child widget expands horizontally to fill up
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|  *  unused space, from 0 to 1.
 | |
|  *  A value of 0 indicates that the child widget should never expand.
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|  *  A value of 1 indicates that the child widget will expand to fill all of the
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|  *  space allocated for the #GtkAlignment.
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|  * @yscale: the amount that the child widget expands vertically to fill up
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|  *  unused space, from 0 to 1. The values are similar to @xscale.
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|  *
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|  * Sets the #GtkAlignment values.
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|  */
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| void
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| gtk_alignment_set (GtkAlignment *alignment,
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| 		   gfloat        xalign,
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| 		   gfloat        yalign,
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| 		   gfloat        xscale,
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| 		   gfloat        yscale)
 | |
| {
 | |
|   GtkAlignmentPrivate *priv;
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|   GtkWidget *child;
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| 
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|   g_return_if_fail (GTK_IS_ALIGNMENT (alignment));
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| 
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|   priv = alignment->priv;
 | |
| 
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|   xalign = CLAMP (xalign, 0.0, 1.0);
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|   yalign = CLAMP (yalign, 0.0, 1.0);
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|   xscale = CLAMP (xscale, 0.0, 1.0);
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|   yscale = CLAMP (yscale, 0.0, 1.0);
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| 
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|   if (   (priv->xalign != xalign)
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|       || (priv->yalign != yalign)
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|       || (priv->xscale != xscale)
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|       || (priv->yscale != yscale))
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|     {
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|       g_object_freeze_notify (G_OBJECT (alignment));
 | |
|       if (priv->xalign != xalign)
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|         {
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|            priv->xalign = xalign;
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|            g_object_notify (G_OBJECT (alignment), "xalign");
 | |
|         }
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|       if (priv->yalign != yalign)
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|         {
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|            priv->yalign = yalign;
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|            g_object_notify (G_OBJECT (alignment), "yalign");
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|         }
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|       if (priv->xscale != xscale)
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|         {
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|            priv->xscale = xscale;
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|            g_object_notify (G_OBJECT (alignment), "xscale");
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|         }
 | |
|       if (priv->yscale != yscale)
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|         {
 | |
|            priv->yscale = yscale;
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|            g_object_notify (G_OBJECT (alignment), "yscale");
 | |
|         }
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|       g_object_thaw_notify (G_OBJECT (alignment));
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| 
 | |
|       child = gtk_bin_get_child (GTK_BIN (alignment));
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|       if (child)
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|         gtk_widget_queue_resize (child);
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|       gtk_widget_queue_draw (GTK_WIDGET (alignment));
 | |
|     }
 | |
| }
 | |
| 
 | |
| 
 | |
| static void
 | |
| gtk_alignment_size_allocate (GtkWidget     *widget,
 | |
| 			     GtkAllocation *allocation)
 | |
| {
 | |
|   GtkAlignment *alignment = GTK_ALIGNMENT (widget);
 | |
|   GtkAlignmentPrivate *priv = alignment->priv;
 | |
|   GtkBin *bin;
 | |
|   GtkAllocation child_allocation;
 | |
|   GtkWidget *child;
 | |
|   gint width, height;
 | |
|   guint border_width;
 | |
|   gint padding_horizontal, padding_vertical;
 | |
| 
 | |
|   padding_horizontal = 0;
 | |
|   padding_vertical = 0;
 | |
| 
 | |
|   gtk_widget_set_allocation (widget, allocation);
 | |
|   bin = GTK_BIN (widget);
 | |
| 
 | |
|   child = gtk_bin_get_child (bin);
 | |
|   if (child && gtk_widget_get_visible (child))
 | |
|     {
 | |
|       gint child_nat_width;
 | |
|       gint child_nat_height;
 | |
|       gint child_width, child_height;
 | |
| 
 | |
|       border_width = gtk_container_get_border_width (GTK_CONTAINER (alignment));
 | |
| 
 | |
|       padding_horizontal = priv->padding_left + priv->padding_right;
 | |
|       padding_vertical = priv->padding_top + priv->padding_bottom;
 | |
| 
 | |
|       width  = MAX (1, allocation->width - padding_horizontal - 2 * border_width);
 | |
|       height = MAX (1, allocation->height - padding_vertical - 2 * border_width);
 | |
| 
 | |
|       if (gtk_widget_get_request_mode (child) == GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
 | |
| 	{
 | |
| 	  gtk_widget_get_preferred_width (child, NULL, &child_nat_width);
 | |
| 
 | |
| 	  child_width = MIN (width, child_nat_width);
 | |
| 
 | |
| 	  gtk_widget_get_preferred_height_for_width (child, child_width, NULL, &child_nat_height);
 | |
| 
 | |
| 	  child_height = MIN (height, child_nat_height);
 | |
| 	}
 | |
|       else
 | |
| 	{
 | |
| 	  gtk_widget_get_preferred_height (child, NULL, &child_nat_height);
 | |
| 
 | |
| 	  child_height = MIN (height, child_nat_height);
 | |
| 
 | |
| 	  gtk_widget_get_preferred_width_for_height (child, child_height, NULL, &child_nat_width);
 | |
| 
 | |
| 	  child_width = MIN (width, child_nat_width);
 | |
| 	}
 | |
| 
 | |
|       if (width > child_width)
 | |
| 	child_allocation.width = (child_width *
 | |
| 				  (1.0 - priv->xscale) +
 | |
| 				  width * priv->xscale);
 | |
|       else
 | |
| 	child_allocation.width = width;
 | |
| 
 | |
|       if (height > child_height)
 | |
| 	child_allocation.height = (child_height *
 | |
| 				   (1.0 - priv->yscale) +
 | |
| 				   height * priv->yscale);
 | |
|       else
 | |
| 	child_allocation.height = height;
 | |
| 
 | |
|       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 | |
| 	child_allocation.x = (1.0 - priv->xalign) * (width - child_allocation.width) + allocation->x + border_width + priv->padding_right;
 | |
|       else 
 | |
| 	child_allocation.x = priv->xalign * (width - child_allocation.width) + allocation->x + border_width + priv->padding_left;
 | |
| 
 | |
|       child_allocation.y = priv->yalign * (height - child_allocation.height) + allocation->y + border_width + priv->padding_top;
 | |
| 
 | |
|       gtk_widget_size_allocate (child, &child_allocation);
 | |
|     }
 | |
| }
 | |
| 
 | |
| 
 | |
| static void
 | |
| gtk_alignment_get_preferred_size (GtkWidget      *widget,
 | |
|                                   GtkOrientation  orientation,
 | |
| 				  gint            for_size,
 | |
|                                   gint           *minimum_size,
 | |
|                                   gint           *natural_size)
 | |
| {
 | |
|   GtkAlignment *alignment = GTK_ALIGNMENT (widget);
 | |
|   GtkAlignmentPrivate *priv = alignment->priv;
 | |
|   GtkWidget *child;
 | |
|   guint minimum, natural;
 | |
| 
 | |
|   natural = minimum = gtk_container_get_border_width (GTK_CONTAINER (widget)) * 2;
 | |
| 
 | |
|   if ((child = gtk_bin_get_child (GTK_BIN (widget))) && gtk_widget_get_visible (child))
 | |
|     {
 | |
|       gint child_min, child_nat;
 | |
| 
 | |
|       /* Request extra space for the padding: */
 | |
|       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 | |
| 	{
 | |
| 	  minimum += (priv->padding_left + priv->padding_right);
 | |
| 
 | |
| 	  if (for_size < 0)
 | |
| 	    gtk_widget_get_preferred_width (child, &child_min, &child_nat);
 | |
| 	  else
 | |
| 	    {
 | |
| 	      gint min_height;
 | |
| 
 | |
| 	      gtk_widget_get_preferred_height (child, &min_height, NULL);
 | |
| 
 | |
| 	      for_size -= (priv->padding_top + priv->padding_bottom);
 | |
| 
 | |
| 	      if (for_size > min_height)
 | |
| 		for_size = (min_height * (1.0 - priv->yscale) +
 | |
| 			    for_size * priv->yscale);
 | |
| 
 | |
| 	      gtk_widget_get_preferred_width_for_height (child, for_size, &child_min, &child_nat);
 | |
| 	    }
 | |
| 	}
 | |
|       else
 | |
| 	{
 | |
| 	  minimum += (priv->padding_top + priv->padding_bottom);
 | |
| 
 | |
| 	  if (for_size < 0)
 | |
| 	    gtk_widget_get_preferred_height (child, &child_min, &child_nat);
 | |
| 	  else
 | |
| 	    {
 | |
| 	      gint min_width;
 | |
| 
 | |
| 	      gtk_widget_get_preferred_width (child, &min_width, NULL);
 | |
| 
 | |
| 	      for_size -= (priv->padding_left + priv->padding_right);
 | |
| 
 | |
| 	      if (for_size > min_width)
 | |
| 		for_size = (min_width * (1.0 - priv->xscale) +
 | |
| 			    for_size * priv->xscale);
 | |
| 
 | |
| 	      gtk_widget_get_preferred_height_for_width (child, for_size, &child_min, &child_nat);
 | |
| 	    }
 | |
| 	}
 | |
| 
 | |
|       natural = minimum;
 | |
| 
 | |
|       minimum += child_min;
 | |
|       natural += child_nat;
 | |
|     }
 | |
| 
 | |
|   if (minimum_size)
 | |
|     *minimum_size = minimum;
 | |
| 
 | |
|   if (natural_size)
 | |
|     *natural_size = natural;
 | |
| }
 | |
| 
 | |
| static void
 | |
| gtk_alignment_get_preferred_width (GtkWidget      *widget,
 | |
|                                    gint           *minimum_size,
 | |
|                                    gint           *natural_size)
 | |
| {
 | |
|   gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, -1, minimum_size, natural_size);
 | |
| }
 | |
| 
 | |
| static void
 | |
| gtk_alignment_get_preferred_height (GtkWidget      *widget,
 | |
|                                     gint           *minimum_size,
 | |
|                                     gint           *natural_size)
 | |
| {
 | |
|   gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, -1, minimum_size, natural_size);
 | |
| }
 | |
| 
 | |
| 
 | |
| static void 
 | |
| gtk_alignment_get_preferred_width_for_height (GtkWidget           *widget,
 | |
| 					      gint                 for_size,
 | |
| 					      gint                *minimum_size,
 | |
| 					      gint                *natural_size)
 | |
| {
 | |
|   gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, for_size, minimum_size, natural_size);
 | |
| }
 | |
| 
 | |
| static void
 | |
| gtk_alignment_get_preferred_height_for_width (GtkWidget           *widget,
 | |
| 					      gint                 for_size,
 | |
| 					      gint                *minimum_size,
 | |
| 					      gint                *natural_size)
 | |
| {
 | |
|   gtk_alignment_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, for_size, minimum_size, natural_size);
 | |
| }
 | |
| 
 | |
| /**
 | |
|  * gtk_alignment_set_padding:
 | |
|  * @alignment: a #GtkAlignment
 | |
|  * @padding_top: the padding at the top of the widget
 | |
|  * @padding_bottom: the padding at the bottom of the widget
 | |
|  * @padding_left: the padding at the left of the widget
 | |
|  * @padding_right: the padding at the right of the widget.
 | |
|  *
 | |
|  * Sets the padding on the different sides of the widget.
 | |
|  * The padding adds blank space to the sides of the widget. For instance,
 | |
|  * this can be used to indent the child widget towards the right by adding
 | |
|  * padding on the left.
 | |
|  *
 | |
|  * Since: 2.4
 | |
|  */
 | |
| void
 | |
| gtk_alignment_set_padding (GtkAlignment    *alignment,
 | |
| 			   guint            padding_top,
 | |
| 			   guint            padding_bottom,
 | |
| 			   guint            padding_left,
 | |
| 			   guint            padding_right)
 | |
| {
 | |
|   GtkAlignmentPrivate *priv;
 | |
|   GtkWidget *child;
 | |
|   
 | |
|   g_return_if_fail (GTK_IS_ALIGNMENT (alignment));
 | |
| 
 | |
|   priv = alignment->priv;
 | |
| 
 | |
|   g_object_freeze_notify (G_OBJECT (alignment));
 | |
| 
 | |
|   if (priv->padding_top != padding_top)
 | |
|     {
 | |
|       priv->padding_top = padding_top;
 | |
|       g_object_notify (G_OBJECT (alignment), "top-padding");
 | |
|     }
 | |
|   if (priv->padding_bottom != padding_bottom)
 | |
|     {
 | |
|       priv->padding_bottom = padding_bottom;
 | |
|       g_object_notify (G_OBJECT (alignment), "bottom-padding");
 | |
|     }
 | |
|   if (priv->padding_left != padding_left)
 | |
|     {
 | |
|       priv->padding_left = padding_left;
 | |
|       g_object_notify (G_OBJECT (alignment), "left-padding");
 | |
|     }
 | |
|   if (priv->padding_right != padding_right)
 | |
|     {
 | |
|       priv->padding_right = padding_right;
 | |
|       g_object_notify (G_OBJECT (alignment), "right-padding");
 | |
|     }
 | |
| 
 | |
|   g_object_thaw_notify (G_OBJECT (alignment));
 | |
|   
 | |
|   /* Make sure that the widget and children are redrawn with the new setting: */
 | |
|   child = gtk_bin_get_child (GTK_BIN (alignment));
 | |
|   if (child)
 | |
|     gtk_widget_queue_resize (child);
 | |
| 
 | |
|   gtk_widget_queue_draw (GTK_WIDGET (alignment));
 | |
| }
 | |
| 
 | |
| /**
 | |
|  * gtk_alignment_get_padding:
 | |
|  * @alignment: a #GtkAlignment
 | |
|  * @padding_top: (out) (allow-none): location to store the padding for
 | |
|  *     the top of the widget, or %NULL
 | |
|  * @padding_bottom: (out) (allow-none): location to store the padding
 | |
|  *     for the bottom of the widget, or %NULL
 | |
|  * @padding_left: (out) (allow-none): location to store the padding
 | |
|  *     for the left of the widget, or %NULL
 | |
|  * @padding_right: (out) (allow-none): location to store the padding
 | |
|  *     for the right of the widget, or %NULL
 | |
|  *
 | |
|  * Gets the padding on the different sides of the widget.
 | |
|  * See gtk_alignment_set_padding ().
 | |
|  *
 | |
|  * Since: 2.4
 | |
|  */
 | |
| void
 | |
| gtk_alignment_get_padding (GtkAlignment    *alignment,
 | |
| 			   guint           *padding_top,
 | |
| 			   guint           *padding_bottom,
 | |
| 			   guint           *padding_left,
 | |
| 			   guint           *padding_right)
 | |
| {
 | |
|   GtkAlignmentPrivate *priv;
 | |
| 
 | |
|   g_return_if_fail (GTK_IS_ALIGNMENT (alignment));
 | |
| 
 | |
|   priv = alignment->priv;
 | |
| 
 | |
|   if(padding_top)
 | |
|     *padding_top = priv->padding_top;
 | |
|   if(padding_bottom)
 | |
|     *padding_bottom = priv->padding_bottom;
 | |
|   if(padding_left)
 | |
|     *padding_left = priv->padding_left;
 | |
|   if(padding_right)
 | |
|     *padding_right = priv->padding_right;
 | |
| }
 | 
