File: gimpdisplayshell-transform.h

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/* The GIMP -- an image manipulation program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef __GIMP_DISPLAY_SHELL_TRANSFORM_H__
#define __GIMP_DISPLAY_SHELL_TRANSFORM_H__


void  gimp_display_shell_transform_coords     (GimpDisplayShell *shell,
                                               GimpCoords       *image_coords,
                                               GimpCoords       *display_coords);
void  gimp_display_shell_untransform_coords   (GimpDisplayShell *shell,
                                               GimpCoords       *display_coords,
                                               GimpCoords       *image_coords);

void  gimp_display_shell_transform_xy         (GimpDisplayShell *shell,
                                               gdouble           x,
                                               gdouble           y,
                                               gint             *nx,
                                               gint             *ny,
                                               gboolean          use_offsets);
void  gimp_display_shell_untransform_xy       (GimpDisplayShell *shell,
                                               gint              x,
                                               gint              y,
                                               gint             *nx,
                                               gint             *ny,
                                               gboolean          round,
                                               gboolean          use_offsets);

void  gimp_display_shell_transform_xy_f       (GimpDisplayShell *shell,
                                               gdouble           x,
                                               gdouble           y,
                                               gdouble          *nx,
                                               gdouble          *ny,
                                               gboolean          use_offsets);
void  gimp_display_shell_untransform_xy_f     (GimpDisplayShell *shell,
                                               gdouble           x,
                                               gdouble           y,
                                               gdouble          *nx,
                                               gdouble          *ny,
                                               gboolean          use_offsets);

void  gimp_display_shell_untransform_viewport (GimpDisplayShell *shell,
                                               gint             *x,
                                               gint             *y,
                                               gint             *width,
                                               gint             *height);


#endif /* __GIMP_DISPLAY_SHELL_TRANSFORM_H__ */