mirror of https://github.com/GNOME/gimp.git
113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/* 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 __BEZIER_SELECTP_H__
|
|
#define __BEZIER_SELECTP_H__
|
|
|
|
#include "draw_core.h"
|
|
|
|
#define BEZIER_START 1
|
|
#define BEZIER_ADD 2
|
|
#define BEZIER_EDIT 4
|
|
#define BEZIER_DRAG 8
|
|
|
|
#define BEZIER_ANCHOR 1
|
|
#define BEZIER_CONTROL 2
|
|
#define BEZIER_MOVE 3
|
|
|
|
#define IMAGE_COORDS 1
|
|
#define AA_IMAGE_COORDS 2
|
|
#define SCREEN_COORDS 3
|
|
|
|
#define SUBDIVIDE 1000
|
|
|
|
enum { EXTEND_EDIT, EXTEND_ADD, EXTEND_REMOVE, EXTEND_NEW };
|
|
|
|
struct _BezierPoint
|
|
{
|
|
gint type; /* type of point (anchor/control/move) */
|
|
gdouble x, y; /* location of point in image space */
|
|
gint sx, sy; /* location of point in screen space */
|
|
BezierPoint *next; /* next point on curve */
|
|
BezierPoint *prev; /* prev point on curve */
|
|
BezierPoint *next_curve; /* Next curve segment */
|
|
gint pointflags; /* Status of point 0 = not selected
|
|
* 1 = selected
|
|
*/
|
|
};
|
|
|
|
struct _BezierSelect
|
|
{
|
|
gint state; /* start, add, edit or drag */
|
|
gint draw; /* all or part */
|
|
gint closed; /* is the last curve closed */
|
|
DrawCore *core; /* Core drawing object */
|
|
BezierPoint *points; /* the curve */
|
|
BezierPoint *cur_anchor; /* the current active anchor point */
|
|
BezierPoint *cur_control; /* the current active control point */
|
|
BezierPoint *last_point; /* the last point on the curve */
|
|
gint num_points; /* number of points in the curve */
|
|
Channel *mask; /* null if the curve is open */
|
|
GSList **scanlines; /* used in converting a curve */
|
|
};
|
|
|
|
/* All udata that are passed to the bezier_draw_curve must
|
|
* have this structure as the first element.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
gint count;
|
|
} CountCurves;
|
|
|
|
typedef void (* BezierPointsFunc) (BezierSelect *, GdkPoint *, int,gpointer);
|
|
|
|
/* Functions */
|
|
int bezier_select_load (void *,
|
|
BezierPoint *,
|
|
gint,
|
|
gint);
|
|
void bezier_draw_curve (BezierSelect *,
|
|
BezierPointsFunc,
|
|
gint,
|
|
gpointer);
|
|
void bezier_select_reset (BezierSelect *bezier_sel);
|
|
void bezier_select_free (BezierSelect *bezier_sel);
|
|
void bezier_add_point (BezierSelect *,
|
|
gint,
|
|
gdouble,
|
|
gdouble);
|
|
void bezier_paste_bezierselect_to_current (GDisplay *gdisp,
|
|
BezierSelect *bezier_sel);
|
|
void bezier_select_mode (gint);
|
|
void bezier_stroke (BezierSelect *bezier_sel,
|
|
GDisplay *gdisp,
|
|
gint,
|
|
gint);
|
|
void bezier_to_selection (BezierSelect *bezier_sel,
|
|
GDisplay *gdisp);
|
|
gint bezier_distance_along (BezierSelect *bezier_sel,
|
|
gint,
|
|
gdouble,
|
|
gint *,
|
|
gint *,
|
|
gdouble *);
|
|
void bezier_draw (GDisplay *gdisp,
|
|
BezierSelect *bezier_sel);
|
|
|
|
#endif /* __BEZIER_SELECTP_H__ */
|