gtkstyle.h 24.1 KB
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/* GTK - The GIMP Toolkit
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 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * 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
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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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, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
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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
 * 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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#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
#endif

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#ifndef __GTK_STYLE_H__
#define __GTK_STYLE_H__


#include <gdk/gdk.h>
#include <gtk/gtkenums.h>

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G_BEGIN_DECLS
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#define GTK_TYPE_STYLE              (gtk_style_get_type ())
#define GTK_STYLE(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), GTK_TYPE_STYLE, GtkStyle))
#define GTK_STYLE_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_STYLE, GtkStyleClass))
#define GTK_IS_STYLE(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), GTK_TYPE_STYLE))
#define GTK_IS_STYLE_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_STYLE))
#define GTK_STYLE_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_STYLE, GtkStyleClass))

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#define GTK_TYPE_BORDER             (gtk_border_get_type ())

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/* Some forward declarations needed to rationalize the header
 * files.
 */
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typedef struct _GtkBorder      GtkBorder;
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typedef struct _GtkStyle       GtkStyle;
typedef struct _GtkStyleClass  GtkStyleClass;
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typedef struct _GtkThemeEngine GtkThemeEngine;
typedef struct _GtkRcStyle     GtkRcStyle;
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typedef struct _GtkIconSet     GtkIconSet;
typedef struct _GtkIconSource  GtkIconSource;
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typedef struct _GtkRcProperty  GtkRcProperty;
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typedef struct _GtkSettings    GtkSettings;
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typedef gboolean (*GtkRcPropertyParser) (const GParamSpec *pspec,
					 const GString    *rc_string,
					 GValue           *property_value);
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/* We make this forward declaration here, since we pass
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 * GtkWidget's to the draw functions.
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 */
typedef struct _GtkWidget      GtkWidget;

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/**
 * GTK_STYLE_ATTACHED:
 * @style: a #GtkStyle.
 *
 * Returns whether the style is attached to a window.
 */
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#define GTK_STYLE_ATTACHED(style)	(GTK_STYLE (style)->attach_count > 0)
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struct _GtkStyle
{
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  GObject parent_instance;
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  /*< public >*/
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  GdkColor fg[5];
  GdkColor bg[5];
  GdkColor light[5];
  GdkColor dark[5];
  GdkColor mid[5];
  GdkColor text[5];
  GdkColor base[5];
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  GdkColor text_aa[5];		/* Halfway between text/base */
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  GdkColor black;
  GdkColor white;
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  PangoFontDescription *font_desc;
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  gint xthickness;
  gint ythickness;
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  GdkPixmap *bg_pixmap[5];
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  /*< private >*/
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  gint attach_count;
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  gint depth;
  GdkColormap *colormap;
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  PangoFontDescription *private_font_desc; /* Font description for style->private_font or %NULL */
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  /* the RcStyle from which this style was created */
  GtkRcStyle	 *rc_style;
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  GSList	 *styles;	  /* of type GtkStyle* */
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  GArray	 *property_cache;
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  GSList         *icon_factories; /* of type GtkIconFactory* */
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};

struct _GtkStyleClass
{
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  GObjectClass parent_class;
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  /* Initialize for a particular colormap/depth
   * combination. style->colormap/style->depth will have
   * been set at this point. Will typically chain to parent.
   */
  void (*realize)               (GtkStyle               *style);

  /* Clean up for a particular colormap/depth combination. Will
   * typically chain to parent.
   */
  void (*unrealize)             (GtkStyle               *style);

  /* Make style an exact duplicate of src.
   */
  void (*copy)                  (GtkStyle               *style,
				 GtkStyle               *src);

  /* Create an empty style of the same type as this style.
   * The default implementation, which does
   * g_object_new (G_OBJECT_TYPE (style), NULL);
   * should work in most cases.
   */
  GtkStyle *(*clone)             (GtkStyle               *style);

  /* Initialize the GtkStyle with the values in the GtkRcStyle.
   * should chain to the parent implementation.
   */
  void     (*init_from_rc)      (GtkStyle               *style,
				 GtkRcStyle             *rc_style);

  void (*set_background)        (GtkStyle               *style,
				 GdkWindow              *window,
				 GtkStateType            state_type);

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  GdkPixbuf * (* render_icon)   (GtkStyle               *style,
                                 const GtkIconSource    *source,
                                 GtkTextDirection        direction,
                                 GtkStateType            state,
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                                 GtkIconSize             size,
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                                 GtkWidget              *widget,
                                 const gchar            *detail);
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  /* Drawing functions
   */
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  void (*draw_hline)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x1,
				 gint			 x2,
				 gint			 y);
  void (*draw_vline)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 y1_,
				 gint			 y2_,
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				 gint			 x);
  void (*draw_shadow)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
  void (*draw_arrow)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 GtkArrowType		 arrow_type,
				 gboolean		 fill,
				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
  void (*draw_diamond)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
  void (*draw_box)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
  void (*draw_flat_box)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
  void (*draw_check)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
  void (*draw_option)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
  void (*draw_tab)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
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				 gint			 height);
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  void (*draw_shadow_gap)	(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height,
				 GtkPositionType	 gap_side,
				 gint			 gap_x,
				 gint			 gap_width);
  void (*draw_box_gap)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height,
				 GtkPositionType	 gap_side,
				 gint			 gap_x,
				 gint			 gap_width);
  void (*draw_extension)	(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height,
				 GtkPositionType	 gap_side);
  void (*draw_focus)		(GtkStyle		*style,
				 GdkWindow		*window,
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                                 GtkStateType            state_type,
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				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
  void (*draw_slider)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height,
				 GtkOrientation		 orientation);
  void (*draw_handle)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GtkShadowType		 shadow_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
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				 const gchar		*detail,
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				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height,
				 GtkOrientation		 orientation);
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  void (*draw_expander)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
				 const gchar		*detail,
				 gint			 x,
				 gint			 y,
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                                 GtkExpanderStyle        expander_style);
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  void (*draw_layout)		(GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
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				 gboolean                use_text,
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				 GdkRectangle		*area,
				 GtkWidget		*widget,
				 const gchar		*detail,
				 gint			 x,
				 gint			 y,
                                 PangoLayout            *layout);
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  void (*draw_resize_grip)      (GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
				 GdkRectangle		*area,
				 GtkWidget		*widget,
				 const gchar		*detail,
                                 GdkWindowEdge           edge,
				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
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  void (*draw_spinner)          (GtkStyle		*style,
				 GdkWindow		*window,
				 GtkStateType		 state_type,
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				 GdkRectangle		*area,
				 GtkWidget		*widget,
				 const gchar		*detail,
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				 guint                   step,
				 gint			 x,
				 gint			 y,
				 gint			 width,
				 gint			 height);
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  /* Padding for future expansion */
  void (*_gtk_reserved1)  (void);
  void (*_gtk_reserved2)  (void);
  void (*_gtk_reserved3)  (void);
  void (*_gtk_reserved4)  (void);
  void (*_gtk_reserved5)  (void);
  void (*_gtk_reserved6)  (void);
  void (*_gtk_reserved7)  (void);
  void (*_gtk_reserved8)  (void);
  void (*_gtk_reserved9)  (void);
  void (*_gtk_reserved10) (void);
  void (*_gtk_reserved11) (void);
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};

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/**
 * GtkBorder:
 * @left: The width of the left border.
 * @right: The width of the right border.
 * @top: The width of the top border.
 * @bottom: The width of the bottom border.
 *
 * A struct that specifies a border around a rectangular area that can
 * be of different width on each side.
 */
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struct _GtkBorder
{
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  gint16 left;
  gint16 right;
  gint16 top;
  gint16 bottom;
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};

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GType     gtk_style_get_type                 (void) G_GNUC_CONST;
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GtkStyle* gtk_style_new			     (void);
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GtkStyle* gtk_style_copy		     (GtkStyle	   *style);
GtkStyle* gtk_style_attach		     (GtkStyle	   *style,
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					      GdkWindow	   *window) G_GNUC_WARN_UNUSED_RESULT;
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void	  gtk_style_detach		     (GtkStyle	   *style);
void	  gtk_style_set_background	     (GtkStyle	   *style,
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					      GdkWindow	   *window,
					      GtkStateType  state_type);
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void	  gtk_style_apply_default_background (GtkStyle	   *style,
					      GdkWindow	   *window,
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					      gboolean	    set_bg,
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					      GtkStateType  state_type,
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					      const GdkRectangle *area,
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					      gint	    x,
					      gint	    y,
					      gint	    width,
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					      gint	    height);

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GtkIconSet* gtk_style_lookup_icon_set        (GtkStyle     *style,
                                              const gchar  *stock_id);
gboolean    gtk_style_lookup_color           (GtkStyle     *style,
                                              const gchar  *color_name,
                                              GdkColor     *color);

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GdkPixbuf*  gtk_style_render_icon     (GtkStyle            *style,
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                                       const GtkIconSource *source,
                                       GtkTextDirection     direction,
                                       GtkStateType         state,
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                                       GtkIconSize          size,
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                                       GtkWidget           *widget,
                                       const gchar         *detail);
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void gtk_paint_hline       (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x1,
			    gint                x2,
			    gint                y);
void gtk_paint_vline       (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                y1_,
			    gint                y2_,
			    gint                x);
void gtk_paint_shadow      (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
void gtk_paint_arrow       (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    GtkArrowType        arrow_type,
			    gboolean            fill,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
void gtk_paint_diamond     (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
void gtk_paint_box         (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
void gtk_paint_flat_box    (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
void gtk_paint_check       (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
void gtk_paint_option      (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
void gtk_paint_tab         (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
void gtk_paint_shadow_gap  (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height,
			    GtkPositionType     gap_side,
			    gint                gap_x,
			    gint                gap_width);
void gtk_paint_box_gap     (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height,
			    GtkPositionType     gap_side,
			    gint                gap_x,
			    gint                gap_width);
void gtk_paint_extension   (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height,
			    GtkPositionType     gap_side);
void gtk_paint_focus       (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
void gtk_paint_slider      (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height,
			    GtkOrientation      orientation);
void gtk_paint_handle      (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
			    GtkShadowType       shadow_type,
			    const GdkRectangle *area,
			    GtkWidget          *widget,
			    const gchar        *detail,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height,
			    GtkOrientation      orientation);
void gtk_paint_expander    (GtkStyle           *style,
                            GdkWindow          *window,
                            GtkStateType        state_type,
                            const GdkRectangle *area,
                            GtkWidget          *widget,
                            const gchar        *detail,
                            gint                x,
                            gint                y,
			    GtkExpanderStyle    expander_style);
void gtk_paint_layout      (GtkStyle           *style,
                            GdkWindow          *window,
                            GtkStateType        state_type,
			    gboolean            use_text,
                            const GdkRectangle *area,
                            GtkWidget          *widget,
                            const gchar        *detail,
                            gint                x,
                            gint                y,
                            PangoLayout        *layout);
void gtk_paint_resize_grip (GtkStyle           *style,
                            GdkWindow          *window,
                            GtkStateType        state_type,
                            const GdkRectangle *area,
                            GtkWidget          *widget,
                            const gchar        *detail,
                            GdkWindowEdge       edge,
                            gint                x,
                            gint                y,
                            gint                width,
                            gint                height);
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void gtk_paint_spinner     (GtkStyle           *style,
			    GdkWindow          *window,
			    GtkStateType        state_type,
                            const GdkRectangle *area,
                            GtkWidget          *widget,
                            const gchar        *detail,
			    guint               step,
			    gint                x,
			    gint                y,
			    gint                width,
			    gint                height);
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GType      gtk_border_get_type (void) G_GNUC_CONST;
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GtkBorder *gtk_border_new      (void) G_GNUC_MALLOC;
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GtkBorder *gtk_border_copy     (const GtkBorder *border_);
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void       gtk_border_free     (GtkBorder       *border_);
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void gtk_style_get_style_property (GtkStyle    *style,
                                   GType        widget_type,
                                   const gchar *property_name,
                                   GValue      *value);
void gtk_style_get_valist         (GtkStyle    *style,
                                   GType        widget_type,
                                   const gchar *first_property_name,
                                   va_list      var_args);
void gtk_style_get                (GtkStyle    *style,
                                   GType        widget_type,
                                   const gchar *first_property_name,
                                   ...) G_GNUC_NULL_TERMINATED;
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/* --- private API --- */
const GValue* _gtk_style_peek_property_value (GtkStyle           *style,
					      GType               widget_type,
					      GParamSpec         *pspec,
					      GtkRcPropertyParser parser);

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void          _gtk_style_init_for_settings   (GtkStyle           *style,
                                              GtkSettings        *settings);

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void          _gtk_style_shade               (const GdkColor     *a,
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                                              GdkColor           *b,
                                              gdouble             k);
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void   gtk_draw_insertion_cursor    (GtkWidget          *widget,
                                     GdkDrawable        *drawable,
                                     const GdkRectangle *area,
                                     const GdkRectangle *location,
                                     gboolean            is_primary,
                                     GtkTextDirection    direction,
                                     gboolean            draw_arrow);
void   _gtk_widget_get_cursor_color (GtkWidget          *widget,
				     GdkColor           *color);
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G_END_DECLS
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#endif /* __GTK_STYLE_H__ */