mirror of https://github.com/GNOME/gimp.git
341 lines
6.8 KiB
C
341 lines
6.8 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1999 Andy Thomas alt@picnic.demon.co.uk
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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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* Some of this code is based on the layers_dialog box code.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <gtk/gtk.h>
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#include "libgimpmath/gimpmath.h"
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#include "tools/tools-types.h"
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#include "core/gimpimage.h"
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#include "display/gimpdisplay.h"
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#include "display/gimpdisplay-foreach.h"
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#include "tools/gimpbezierselecttool.h"
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#include "gui/paths-dialog.h"
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#include "path.h"
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#include "pathP.h"
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static gchar * unique_name (GimpImage *gimage,
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gchar *cstr);
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Path *
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path_new (GimpImage *gimage,
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PathType ptype,
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GSList *path_details,
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gint closed,
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gint state,
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gint locked,
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gint tattoo,
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gchar *name)
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{
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gchar *suniq;
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Path *path = g_new0 (Path, 1);
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suniq = unique_name (gimage, name);
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if (suniq)
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path->name = suniq;
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else
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path->name = g_strdup (name);
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path->path_details = path_details;
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path->closed = closed;
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path->state = state;
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path->locked = locked;
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path->pathtype = ptype;
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if(tattoo)
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path->tattoo = tattoo;
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else
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path->tattoo = gimp_image_get_new_tattoo (gimage);
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return path;
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}
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Path *
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path_copy (GimpImage *gimage,
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Path *path)
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{
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Path *p_copy = g_new0 (Path, 1);
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gchar *name;
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name = unique_name (gimage, path->name);
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if (name)
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p_copy->name = name;
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else
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p_copy->name = g_strdup (path->name);
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p_copy->closed = path->closed;
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p_copy->state = path->state;
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p_copy->pathtype = path->pathtype;
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p_copy->path_details = pathpoints_copy (path->path_details);
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if (gimage)
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p_copy->tattoo = gimp_image_get_new_tattoo (gimage);
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else
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p_copy->tattoo = path->tattoo;
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return p_copy;
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}
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void
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path_free (Path *path)
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{
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g_return_if_fail (path != NULL);
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g_free (path->name);
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pathpoints_free (path->path_details);
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g_free (path);
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}
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PathPoint *
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path_point_new (guint type,
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gdouble x,
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gdouble y)
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{
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PathPoint *pathpoint = g_new0 (PathPoint,1);
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pathpoint->type = type;
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pathpoint->x = x;
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pathpoint->y = y;
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return pathpoint;
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}
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void
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path_point_free (PathPoint *pathpoint)
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{
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g_free (pathpoint);
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}
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void
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path_stroke (GimpImage *gimage,
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PathList *pl,
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Path *bzp)
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{
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GimpBezierSelectTool *bezier_sel;
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GimpDisplay *gdisp;
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gdisp = gdisplays_check_valid (pl->gdisp, gimage);
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bezier_sel = path_to_beziersel (bzp);
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bezier_stroke (bezier_sel, gdisp, SUBDIVIDE, !bzp->closed);
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bezier_select_free (bezier_sel);
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}
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gint
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path_distance (Path *bzp,
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gdouble dist,
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gint *x,
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gint *y,
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gdouble *grad)
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{
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gint ret;
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GimpBezierSelectTool *bezier_sel;
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bezier_sel = path_to_beziersel (bzp);
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ret = bezier_distance_along (bezier_sel, !bzp->closed, dist, x, y, grad);
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bezier_select_free (bezier_sel);
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return ret;
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}
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GimpTattoo
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path_get_tattoo (Path* p)
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{
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if (!p)
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{
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g_warning ("path_get_tattoo: invalid path");
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return 0;
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}
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return p->tattoo;
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}
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Path*
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path_get_path_by_tattoo (GimpImage *gimage,
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GimpTattoo tattoo)
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{
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GSList *tlist;
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PathList *plp;
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if (!gimage || !tattoo)
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return NULL;
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/* Go around the list and check all tattoos. */
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/* Get path structure */
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plp = (PathList*) gimp_image_get_paths (gimage);
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if (!plp)
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return (NULL);
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for (tlist = plp->bz_paths; tlist; tlist = g_slist_next(tlist))
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{
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Path* p = (Path*)(tlist->data);
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if (p->tattoo == tattoo)
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return (p);
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}
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return (NULL);
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}
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PathList *
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path_list_new (GimpImage *gimage,
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gint last_selected_row,
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GSList *bz_paths)
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{
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PathList *pip = g_new0 (PathList, 1);
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pip->gimage = gimage;
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pip->last_selected_row = last_selected_row;
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/* add connector to image delete/destroy */
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pip->sig_id = g_signal_connect (gimage, "disconnect",
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G_CALLBACK (paths_dialog_destroy_cb),
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pip);
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pip->bz_paths = bz_paths;
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return (PathList *) pip;
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}
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void
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path_list_free (PathList* iml)
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{
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g_return_if_fail (iml != NULL);
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if (iml->bz_paths)
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{
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g_slist_foreach (iml->bz_paths, (GFunc) path_free, NULL);
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g_slist_free (iml->bz_paths);
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}
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g_free (iml);
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}
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/* Always return a copy that must be freed later */
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static gchar *
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strip_off_cnumber (gchar *str)
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{
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gchar *hashptr;
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gint num;
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gchar *copy;
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if (!str)
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return str;
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copy = g_strdup (str);
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if ((hashptr = strrchr (copy,'#')) && /* have a hash */
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strlen(hashptr) > 0 && /* followed by something */
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(num = atoi(hashptr+1)) > 0 && /* which is a number */
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((int) log10 (num) + 1) == strlen (hashptr+1)) /* which is at the end */
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{
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gchar *tstr;
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/* Has a #<number> */
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*hashptr = '\0';
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tstr = g_strdup (copy);
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g_free (copy);
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copy = tstr;
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}
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return copy;
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}
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/* Return NULL if already unique else a unique string */
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static gchar *
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unique_name (GimpImage *gimage,
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gchar *cstr)
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{
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GSList *tlist;
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PathList *plp;
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gboolean unique = TRUE;
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gchar *copy_cstr;
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gchar *copy_test;
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gchar *stripped_copy;
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gint counter = 1;
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/* Get bzpath structure */
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if (!gimage || !(plp = (PathList*) gimp_image_get_paths(gimage)))
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return NULL;
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tlist = plp->bz_paths;
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while (tlist)
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{
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gchar *test_str;
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test_str = ((Path *) (tlist->data))->name;
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if (strcmp (cstr, test_str) == 0)
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{
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unique = FALSE;
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break;
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}
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tlist = g_slist_next(tlist);
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}
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if (unique)
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return NULL;
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/* OK Clashes with something */
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/* restart scan to find unique name */
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stripped_copy = strip_off_cnumber (cstr);
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copy_cstr = g_strdup_printf ("%s#%d", stripped_copy, counter++);
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tlist = plp->bz_paths;
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while (tlist)
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{
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copy_test = ((Path*)(tlist->data))->name;
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if (strcmp (copy_cstr,copy_test) == 0)
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{
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g_free (copy_cstr);
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copy_cstr = g_strdup_printf ("%s#%d", stripped_copy, counter++);
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tlist = plp->bz_paths;
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continue;
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}
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tlist = g_slist_next(tlist);
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}
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g_free (stripped_copy);
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return copy_cstr;
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}
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