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-rw-r--r--app/vectors/gimpvectors.h184
1 files changed, 184 insertions, 0 deletions
diff --git a/app/vectors/gimpvectors.h b/app/vectors/gimpvectors.h
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpvectors.h
+ * Copyright (C) 2002 Simon Budig <simon@gimp.org>
+ *
+ * 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 3 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_VECTORS_H__
+#define __GIMP_VECTORS_H__
+
+#include "core/gimpitem.h"
+
+#define GIMP_TYPE_VECTORS (gimp_vectors_get_type ())
+#define GIMP_VECTORS(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_VECTORS, GimpVectors))
+#define GIMP_VECTORS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_VECTORS, GimpVectorsClass))
+#define GIMP_IS_VECTORS(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_VECTORS))
+#define GIMP_IS_VECTORS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_VECTORS))
+#define GIMP_VECTORS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_VECTORS, GimpVectorsClass))
+
+
+typedef struct _GimpVectorsClass GimpVectorsClass;
+
+struct _GimpVectors
+{
+ GimpItem parent_instance;
+
+ GQueue *strokes; /* Queue of GimpStrokes */
+ GHashTable *stroke_to_list; /* Map from GimpStroke to strokes listnode */
+ gint last_stroke_ID;
+
+ gint freeze_count;
+ gdouble precision;
+
+ GimpBezierDesc *bezier_desc; /* Cached bezier representation */
+
+ gboolean bounds_valid; /* Cached bounding box */
+ gboolean bounds_empty;
+ gdouble bounds_x1;
+ gdouble bounds_y1;
+ gdouble bounds_x2;
+ gdouble bounds_y2;
+};
+
+struct _GimpVectorsClass
+{
+ GimpItemClass parent_class;
+
+ /* signals */
+ void (* freeze) (GimpVectors *vectors);
+ void (* thaw) (GimpVectors *vectors);
+
+ /* virtual functions */
+ void (* stroke_add) (GimpVectors *vectors,
+ GimpStroke *stroke);
+ void (* stroke_remove) (GimpVectors *vectors,
+ GimpStroke *stroke);
+ GimpStroke * (* stroke_get) (GimpVectors *vectors,
+ const GimpCoords *coord);
+ GimpStroke * (* stroke_get_next) (GimpVectors *vectors,
+ GimpStroke *prev);
+ gdouble (* stroke_get_length) (GimpVectors *vectors,
+ GimpStroke *stroke);
+ GimpAnchor * (* anchor_get) (GimpVectors *vectors,
+ const GimpCoords *coord,
+ GimpStroke **ret_stroke);
+ void (* anchor_delete) (GimpVectors *vectors,
+ GimpAnchor *anchor);
+ gdouble (* get_length) (GimpVectors *vectors,
+ const GimpAnchor *start);
+ gdouble (* get_distance) (GimpVectors *vectors,
+ const GimpCoords *coord);
+ gint (* interpolate) (GimpVectors *vectors,
+ GimpStroke *stroke,
+ gdouble precision,
+ gint max_points,
+ GimpCoords *ret_coords);
+ GimpBezierDesc * (* make_bezier) (GimpVectors *vectors);
+};
+
+
+/* vectors utility functions */
+
+GType gimp_vectors_get_type (void) G_GNUC_CONST;
+
+GimpVectors * gimp_vectors_new (GimpImage *image,
+ const gchar *name);
+
+GimpVectors * gimp_vectors_get_parent (GimpVectors *vectors);
+
+void gimp_vectors_freeze (GimpVectors *vectors);
+void gimp_vectors_thaw (GimpVectors *vectors);
+
+void gimp_vectors_copy_strokes (GimpVectors *src_vectors,
+ GimpVectors *dest_vectors);
+void gimp_vectors_add_strokes (GimpVectors *src_vectors,
+ GimpVectors *dest_vectors);
+
+
+/* accessing / modifying the anchors */
+
+GimpAnchor * gimp_vectors_anchor_get (GimpVectors *vectors,
+ const GimpCoords *coord,
+ GimpStroke **ret_stroke);
+
+/* prev == NULL: "first" anchor */
+GimpAnchor * gimp_vectors_anchor_get_next (GimpVectors *vectors,
+ const GimpAnchor *prev);
+
+/* type will be an xorable enum:
+ * VECTORS_NONE, VECTORS_FIX_ANGLE, VECTORS_FIX_RATIO, VECTORS_RESTRICT_ANGLE
+ * or so.
+ */
+void gimp_vectors_anchor_move_relative (GimpVectors *vectors,
+ GimpAnchor *anchor,
+ const GimpCoords *deltacoord,
+ gint type);
+void gimp_vectors_anchor_move_absolute (GimpVectors *vectors,
+ GimpAnchor *anchor,
+ const GimpCoords *coord,
+ gint type);
+
+void gimp_vectors_anchor_delete (GimpVectors *vectors,
+ GimpAnchor *anchor);
+
+void gimp_vectors_anchor_select (GimpVectors *vectors,
+ GimpStroke *target_stroke,
+ GimpAnchor *anchor,
+ gboolean selected,
+ gboolean exclusive);
+
+
+/* GimpStroke is a connected component of a GimpVectors object */
+
+void gimp_vectors_stroke_add (GimpVectors *vectors,
+ GimpStroke *stroke);
+void gimp_vectors_stroke_remove (GimpVectors *vectors,
+ GimpStroke *stroke);
+gint gimp_vectors_get_n_strokes (GimpVectors *vectors);
+GimpStroke * gimp_vectors_stroke_get (GimpVectors *vectors,
+ const GimpCoords *coord);
+GimpStroke * gimp_vectors_stroke_get_by_ID (GimpVectors *vectors,
+ gint id);
+
+/* prev == NULL: "first" stroke */
+GimpStroke * gimp_vectors_stroke_get_next (GimpVectors *vectors,
+ GimpStroke *prev);
+gdouble gimp_vectors_stroke_get_length (GimpVectors *vectors,
+ GimpStroke *stroke);
+
+/* accessing the shape of the curve */
+
+gdouble gimp_vectors_get_length (GimpVectors *vectors,
+ const GimpAnchor *start);
+gdouble gimp_vectors_get_distance (GimpVectors *vectors,
+ const GimpCoords *coord);
+
+/* returns the number of valid coordinates */
+
+gint gimp_vectors_interpolate (GimpVectors *vectors,
+ GimpStroke *stroke,
+ gdouble precision,
+ gint max_points,
+ GimpCoords *ret_coords);
+
+/* usually overloaded */
+
+/* returns a bezier representation */
+const GimpBezierDesc * gimp_vectors_get_bezier (GimpVectors *vectors);
+
+
+#endif /* __GIMP_VECTORS_H__ */