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/* GIMP - The GNU 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#ifndef __GIMP_DISPLAY_SHELL_TRANSFORM_H__
#define __GIMP_DISPLAY_SHELL_TRANSFORM_H__
/* zoom: functions to transform from image space to unrotated display
* space and back, taking into account scroll offset and scale
*/
void gimp_display_shell_zoom_coords (GimpDisplayShell *shell,
const GimpCoords *image_coords,
GimpCoords *display_coords);
void gimp_display_shell_unzoom_coords (GimpDisplayShell *shell,
const GimpCoords *display_coords,
GimpCoords *image_coords);
void gimp_display_shell_zoom_xy (GimpDisplayShell *shell,
gdouble x,
gdouble y,
gint *nx,
gint *ny);
void gimp_display_shell_unzoom_xy (GimpDisplayShell *shell,
gint x,
gint y,
gint *nx,
gint *ny,
gboolean round);
void gimp_display_shell_zoom_xy_f (GimpDisplayShell *shell,
gdouble x,
gdouble y,
gdouble *nx,
gdouble *ny);
void gimp_display_shell_unzoom_xy_f (GimpDisplayShell *shell,
gdouble x,
gdouble y,
gdouble *nx,
gdouble *ny);
void gimp_display_shell_zoom_segments (GimpDisplayShell *shell,
const GimpBoundSeg *src_segs,
GimpSegment *dest_segs,
gint n_segs,
gdouble offset_x,
gdouble offset_y);
/* rotate: functions to transform from unrotated and unflipped but
* zoomed display space to rotated and flipped display space and back
*/
void gimp_display_shell_rotate_coords (GimpDisplayShell *shell,
const GimpCoords *image_coords,
GimpCoords *display_coords);
void gimp_display_shell_unrotate_coords (GimpDisplayShell *shell,
const GimpCoords *display_coords,
GimpCoords *image_coords);
void gimp_display_shell_rotate_xy (GimpDisplayShell *shell,
gdouble x,
gdouble y,
gint *nx,
gint *ny);
void gimp_display_shell_unrotate_xy (GimpDisplayShell *shell,
gint x,
gint y,
gint *nx,
gint *ny);
void gimp_display_shell_rotate_xy_f (GimpDisplayShell *shell,
gdouble x,
gdouble y,
gdouble *nx,
gdouble *ny);
void gimp_display_shell_unrotate_xy_f (GimpDisplayShell *shell,
gdouble x,
gdouble y,
gdouble *nx,
gdouble *ny);
void gimp_display_shell_rotate_bounds (GimpDisplayShell *shell,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gdouble *nx1,
gdouble *ny1,
gdouble *nx2,
gdouble *ny2);
void gimp_display_shell_unrotate_bounds (GimpDisplayShell *shell,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gdouble *nx1,
gdouble *ny1,
gdouble *nx2,
gdouble *ny2);
/* transform: functions to transform from image space to rotated
* display space and back, taking into account scroll offset, scale,
* rotation and flipping
*/
void gimp_display_shell_transform_coords (GimpDisplayShell *shell,
const GimpCoords *image_coords,
GimpCoords *display_coords);
void gimp_display_shell_untransform_coords (GimpDisplayShell *shell,
const GimpCoords *display_coords,
GimpCoords *image_coords);
void gimp_display_shell_transform_xy (GimpDisplayShell *shell,
gdouble x,
gdouble y,
gint *nx,
gint *ny);
void gimp_display_shell_untransform_xy (GimpDisplayShell *shell,
gint x,
gint y,
gint *nx,
gint *ny,
gboolean round);
void gimp_display_shell_transform_xy_f (GimpDisplayShell *shell,
gdouble x,
gdouble y,
gdouble *nx,
gdouble *ny);
void gimp_display_shell_untransform_xy_f (GimpDisplayShell *shell,
gdouble x,
gdouble y,
gdouble *nx,
gdouble *ny);
void gimp_display_shell_transform_bounds (GimpDisplayShell *shell,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gdouble *nx1,
gdouble *ny1,
gdouble *nx2,
gdouble *ny2);
void gimp_display_shell_untransform_bounds (GimpDisplayShell *shell,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gdouble *nx1,
gdouble *ny1,
gdouble *nx2,
gdouble *ny2);
void gimp_display_shell_transform_bounds_with_scale (GimpDisplayShell *shell,
gdouble scale,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gdouble *nx1,
gdouble *ny1,
gdouble *nx2,
gdouble *ny2);
void gimp_display_shell_untransform_bounds_with_scale (GimpDisplayShell *shell,
gdouble scale,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gdouble *nx1,
gdouble *ny1,
gdouble *nx2,
gdouble *ny2);
void gimp_display_shell_untransform_viewport (GimpDisplayShell *shell,
gboolean clip,
gint *x,
gint *y,
gint *width,
gint *height);
#endif /* __GIMP_DISPLAY_SHELL_TRANSFORM_H__ */
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