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Diffstat (limited to 'app/display/gimpdisplayshell-transform.h')
| -rw-r--r-- | app/display/gimpdisplayshell-transform.h | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/app/display/gimpdisplayshell-transform.h b/app/display/gimpdisplayshell-transform.h new file mode 100644 index 0000000..1877b13 --- /dev/null +++ b/app/display/gimpdisplayshell-transform.h @@ -0,0 +1,200 @@ +/* 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 filpped 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__ */ |