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9127a54dec
2004-03-20 Pedro Gimeno <pggimeno@wanadoo.es> Fixed several off-by-one problems in display: * app/display/gimpdisplayshell.h (PROJ_ROUND): New macro to apply to a float the same rounding method as the one used when rendering. (SCALEX, SCALEY): Use PROJ_ROUND instead of truncating. * app/display/gimpdisplayshell-transform.c (gimp_display_shell_transform_xy): Accept gdouble image coordinates even if the returned screen coordinates are integer. Use PROJ_ROUND instead of (gint) to apply proper rounding. Fixes bug #137566. * app/display/gimpdisplayshell-transform.h (gimp_display_shell_transform_xy): changed accordingly. * app/display/gimpdisplayshell-draw.c * app/tools/gimpdrawtool.c: make sure everywhere that PROJ_ROUND is used either directly or through gimp_display_shell_transform_xy, instead of using arbitrary rounding methods.
65 lines
3.5 KiB
C
65 lines
3.5 KiB
C
/* The GIMP -- an 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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 (GimpDisplayShell *shell,
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GimpCoords *image_coords,
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GimpCoords *display_coords);
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void gimp_display_shell_untransform_coords (GimpDisplayShell *shell,
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GimpCoords *display_coords,
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GimpCoords *image_coords);
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void gimp_display_shell_transform_xy (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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gboolean use_offsets);
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void gimp_display_shell_untransform_xy (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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gboolean use_offsets);
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void gimp_display_shell_transform_xy_f (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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gboolean use_offsets);
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void gimp_display_shell_untransform_xy_f (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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gboolean use_offsets);
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void gimp_display_shell_untransform_viewport (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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