b3a9a6a3e3
First version of display rotation, inspired by gimp-painter. The rotation always happens around the image's center. The only "UI" for rotating is currently shift+middle-drag and shift+space-drag. Control constrains the angle to 15 degrees and is currently the only way to go back to "no rotation".
85 lines
5.1 KiB
C
85 lines
5.1 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GIMP_DISPLAY_SHELL_TRANSFORM_H__
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#define __GIMP_DISPLAY_SHELL_TRANSFORM_H__
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void gimp_display_shell_transform_coords (const GimpDisplayShell *shell,
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const GimpCoords *image_coords,
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GimpCoords *display_coords);
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void gimp_display_shell_untransform_coords (const GimpDisplayShell *shell,
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const GimpCoords *display_coords,
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GimpCoords *image_coords);
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void gimp_display_shell_transform_xy (const GimpDisplayShell *shell,
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gdouble x,
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gdouble y,
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gint *nx,
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gint *ny);
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void gimp_display_shell_untransform_xy (const GimpDisplayShell *shell,
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gint x,
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gint y,
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gint *nx,
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gint *ny,
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gboolean round);
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void gimp_display_shell_transform_xy_f (const GimpDisplayShell *shell,
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gdouble x,
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gdouble y,
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gdouble *nx,
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gdouble *ny);
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void gimp_display_shell_untransform_xy_f (const GimpDisplayShell *shell,
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gdouble x,
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gdouble y,
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gdouble *nx,
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gdouble *ny);
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void gimp_display_shell_transform_bounds (const GimpDisplayShell *shell,
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gdouble x1,
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gdouble y1,
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gdouble x2,
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gdouble y2,
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gdouble *nx1,
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gdouble *ny1,
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gdouble *nx2,
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gdouble *ny2);
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void gimp_display_shell_untransform_bounds (const GimpDisplayShell *shell,
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gdouble x1,
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gdouble y1,
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gdouble x2,
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gdouble y2,
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gdouble *nx1,
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gdouble *ny1,
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gdouble *nx2,
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gdouble *ny2);
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void gimp_display_shell_transform_segments (const GimpDisplayShell *shell,
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const GimpBoundSeg *src_segs,
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GimpSegment *dest_segs,
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gint n_segs,
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gdouble offset_x,
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gdouble offset_y);
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void gimp_display_shell_untransform_viewport (const GimpDisplayShell *shell,
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gint *x,
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gint *y,
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gint *width,
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gint *height);
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#endif /* __GIMP_DISPLAY_SHELL_TRANSFORM_H__ */
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