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diff --git a/eel/eel-art-extensions.h b/eel/eel-art-extensions.h
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+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+
+/* eel-art-extensions.h - interface of libart extension functions.
+
+   Copyright (C) 2000 Eazel, Inc.
+
+   The Mate Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The Mate Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the Mate Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+   Authors: Darin Adler <[email protected]>
+            Ramiro Estrugo <[email protected]>
+*/
+
+#ifndef EEL_ART_EXTENSIONS_H
+#define EEL_ART_EXTENSIONS_H
+
+#include <glib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    typedef struct
+    {
+        double x, y;
+    } EelDPoint;
+
+    typedef struct
+    {
+        int x;
+        int y;
+    } EelIPoint;
+
+    typedef struct
+    {
+        double x0, y0, x1, y1;
+    } EelDRect;
+
+    typedef struct
+    {
+        /*< public >*/
+        int x0, y0, x1, y1;
+    } EelIRect;
+
+    typedef struct
+    {
+        int width;
+        int height;
+    } EelDimensions;
+
+    extern const EelDRect eel_drect_empty;
+    extern const EelIRect eel_irect_empty;
+    extern const EelIPoint eel_ipoint_max;
+    extern const EelIPoint eel_ipoint_min;
+    extern const EelIPoint eel_ipoint_zero;
+    extern const EelDimensions eel_dimensions_empty;
+
+    void     eel_irect_copy              (EelIRect       *dest,
+                                          const EelIRect *src);
+    void     eel_irect_union             (EelIRect       *dest,
+                                          const EelIRect *src1,
+                                          const EelIRect *src2);
+    void     eel_irect_intersect         (EelIRect       *dest,
+                                          const EelIRect *src1,
+                                          const EelIRect *src2);
+    gboolean eel_irect_equal             (EelIRect        rectangle_a,
+                                          EelIRect        rectangle_b);
+    gboolean eel_irect_hits_irect        (EelIRect        rectangle_a,
+                                          EelIRect        rectangle_b);
+    EelIRect eel_irect_offset_by         (EelIRect        rectangle,
+                                          int             x,
+                                          int             y);
+    EelIRect eel_irect_scale_by          (EelIRect        rectangle,
+                                          double          scale);
+    gboolean eel_irect_is_empty          (const EelIRect *rectangle);
+    gboolean eel_irect_contains_point    (EelIRect        outer_rectangle,
+                                          int             x,
+                                          int             y);
+    EelIRect eel_irect_assign            (int             x,
+                                          int             y,
+                                          int             width,
+                                          int             height);
+    EelIRect eel_irect_assign_dimensions (int             x,
+                                          int             y,
+                                          EelDimensions   dimensions);
+    int      eel_irect_get_width         (EelIRect        rectangle);
+    int      eel_irect_get_height        (EelIRect        rectangle);
+    EelIRect eel_irect_align             (EelIRect        container,
+                                          int             aligned_width,
+                                          int             aligned_height,
+                                          float           x_alignment,
+                                          float           y_alignment);
+
+
+    void eel_drect_union (EelDRect       *dest,
+                          const EelDRect *src1,
+                          const EelDRect *src2);
+
+
+    /* EelDimensions functions. */
+    gboolean      eel_dimensions_are_empty        (EelDimensions dimensions);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* EEL_ART_EXTENSIONS_H */