mirror of https://github.com/GNOME/gimp.git
135 lines
4.2 KiB
C
135 lines
4.2 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 __PATH_TOOLP_H__
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#define __PATH_TOOLP_H__
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#undef PATH_TOOL_DEBUG
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#include "draw_core.h"
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#ifdef PATH_TOOL_DEBUG
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#include <stdio.h>
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#endif
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#define IMAGE_COORDS 1
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#define AA_IMAGE_COORDS 2
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#define SCREEN_COORDS 3
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#define SEGMENT_ACTIVE 1
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#define PATH_TOOL_DRAG 1
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#define PATH_TOOL_REDRAW_ALL 1
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#define PATH_TOOL_REDRAW_ACTIVE 2
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#define PATH_TOOL_REDRAW_HANDLES 4
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#define SUBDIVIDE 1000
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typedef enum { SEGMENT_LINE=0, SEGMENT_BEZIER} SegmentType;
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enum { ON_ANCHOR, ON_HANDLE, ON_CURVE, ON_CANVAS };
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typedef struct _path_segment PathSegment;
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typedef struct _path_curve PathCurve;
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typedef struct _path Path;
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typedef struct _path_tool PathTool;
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struct _path_segment
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{
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SegmentType type; /* What type of segment */
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gdouble x, y; /* location of starting-point in image space */
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gpointer data; /* Additional data, dependant of segment-type */
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guint32 flags; /* Various Flags: Is the Segment active? */
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PathCurve *parent; /* the parent Curve */
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PathSegment *next; /* Next Segment or NULL */
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PathSegment *prev; /* Previous Segment or NULL */
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};
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struct _path_curve
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{
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PathSegment *segments; /* The segments of the curve */
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PathSegment *cur_segment; /* the current segment */
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Path *parent; /* the parent Path */
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PathCurve *next; /* Next Curve or NULL */
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PathCurve *prev; /* Previous Curve or NULL */
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};
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struct _path
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{
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PathCurve *curves; /* the curves */
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PathCurve *cur_curve; /* the current curve */
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GString *name; /* the name of the path */
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guint32 state; /* is the path locked? */
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PathTool *path_tool; /* The parent Path Tool */
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};
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struct _path_tool
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{
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gint click_type; /* where did the user click? */
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gint click_x; /* X-coordinate of the click */
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gint click_y; /* Y-coordinate of the click */
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gint click_halfwidth;
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guint click_modifier; /* what modifiers were pressed? */
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Path *click_path; /* On which Path/Curve/Segment */
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PathCurve *click_curve; /* was the click? */
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PathSegment *click_segment;
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gdouble click_position; /* The position on the segment */
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gint click_handle_id; /* The handle ID of the segment */
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gint active_count; /* How many segments are active? */
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/*
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* WARNING: single_active_segment may contain non NULL Values
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* which point to the nirvana. But they are important!
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* The pointer is garantueed to be valid, when active_count==1
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*/
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PathSegment *single_active_segment; /* The only active segment */
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gint state; /* state of tool */
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gint draw; /* all or part */
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DrawCore *core; /* Core drawing object */
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Path *cur_path; /* the current active path */
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GSList **scanlines; /* used in converting a path */
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};
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typedef void
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(*PathTraverseFunc) (Path *,
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PathCurve *,
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gpointer);
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typedef void
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(*CurveTraverseFunc) (Path *,
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PathCurve *,
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PathSegment *,
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gpointer);
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typedef void
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(*SegmentTraverseFunc) (Path *,
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PathCurve *,
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PathSegment *,
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gint,
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gint,
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gpointer);
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#endif /* __PATH_TOOLP_H__ */
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