Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 202 insertions, 0 deletions

diff --git a/app/core/gimpbezierdesc.c b/app/core/gimpbezierdesc.c
new file mode 100644
index 0000000..6047544
--- /dev/null
+++ b/app/core/gimpbezierdesc.c
@@ -0,0 +1,202 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpbezierdesc.c
+ * Copyright (C) 2010 Michael Natterer <mitch@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/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <cairo.h>
+
+#include "core-types.h"
+
+#include "gimpbezierdesc.h"
+#include "gimpboundary.h"
+
+
+GType
+gimp_bezier_desc_get_type (void)
+{
+  static GType type = 0;
+
+  if (! type)
+    type = g_boxed_type_register_static ("GimpBezierDesc",
+                                         (GBoxedCopyFunc) gimp_bezier_desc_copy,
+                                         (GBoxedFreeFunc) gimp_bezier_desc_free);
+
+  return type;
+}
+
+GimpBezierDesc *
+gimp_bezier_desc_new (cairo_path_data_t *data,
+                      gint               n_data)
+{
+  GimpBezierDesc *desc;
+
+  g_return_val_if_fail (n_data == 0 || data != NULL, NULL);
+
+  desc = g_slice_new (GimpBezierDesc);
+
+  desc->status   = CAIRO_STATUS_SUCCESS;
+  desc->num_data = n_data;
+  desc->data     = data;
+
+  return desc;
+}
+
+static void
+add_polyline (GArray            *path_data,
+              const GimpVector2 *points,
+              gint               n_points,
+              gboolean           closed)
+{
+  GimpVector2       prev = { 0.0, 0.0, };
+  cairo_path_data_t pd;
+  gint              i;
+
+  for (i = 0; i < n_points; i++)
+    {
+      /* compress multiple identical coordinates */
+      if (i == 0 ||
+          prev.x != points[i].x ||
+          prev.y != points[i].y)
+        {
+          pd.header.type   = (i == 0) ? CAIRO_PATH_MOVE_TO : CAIRO_PATH_LINE_TO;
+          pd.header.length = 2;
+
+          g_array_append_val (path_data, pd);
+
+          pd.point.x = points[i].x;
+          pd.point.y = points[i].y;
+
+          g_array_append_val (path_data, pd);
+
+          prev = points[i];
+        }
+    }
+
+  /* close the polyline when needed */
+  if (closed)
+    {
+      pd.header.type   = CAIRO_PATH_CLOSE_PATH;
+      pd.header.length = 1;
+
+      g_array_append_val (path_data, pd);
+    }
+}
+
+GimpBezierDesc *
+gimp_bezier_desc_new_from_bound_segs (GimpBoundSeg *bound_segs,
+                                      gint          n_bound_segs,
+                                      gint          n_bound_groups)
+{
+  GArray      *path_data;
+  GimpVector2 *points;
+  gint         n_points;
+  gint         seg;
+  gint         i;
+  guint        path_data_len;
+
+  g_return_val_if_fail (bound_segs != NULL, NULL);
+  g_return_val_if_fail (n_bound_segs > 0, NULL);
+
+  path_data = g_array_new (FALSE, FALSE, sizeof (cairo_path_data_t));
+
+  points = g_new0 (GimpVector2, n_bound_segs + 4);
+
+  seg = 0;
+  n_points = 0;
+
+  points[n_points].x = (gdouble) (bound_segs[0].x1);
+  points[n_points].y = (gdouble) (bound_segs[0].y1);
+
+  n_points++;
+
+  for (i = 0; i < n_bound_groups; i++)
+    {
+      while (bound_segs[seg].x1 != -1 ||
+             bound_segs[seg].x2 != -1 ||
+             bound_segs[seg].y1 != -1 ||
+             bound_segs[seg].y2 != -1)
+        {
+          points[n_points].x = (gdouble) (bound_segs[seg].x1);
+          points[n_points].y = (gdouble) (bound_segs[seg].y1);
+
+          n_points++;
+          seg++;
+        }
+
+      /* Close the stroke points up */
+      points[n_points] = points[0];
+
+      n_points++;
+
+      add_polyline (path_data, points, n_points, TRUE);
+
+      n_points = 0;
+      seg++;
+
+      points[n_points].x = (gdouble) (bound_segs[seg].x1);
+      points[n_points].y = (gdouble) (bound_segs[seg].y1);
+
+      n_points++;
+    }
+
+  g_free (points);
+
+  path_data_len = path_data->len;
+
+  return gimp_bezier_desc_new ((cairo_path_data_t *) g_array_free (path_data, FALSE),
+                               path_data_len);
+}
+
+void
+gimp_bezier_desc_translate (GimpBezierDesc *desc,
+                            gdouble         offset_x,
+                            gdouble         offset_y)
+{
+  gint i, j;
+
+  g_return_if_fail (desc != NULL);
+
+  for (i = 0; i < desc->num_data; i += desc->data[i].header.length)
+    for (j = 1; j < desc->data[i].header.length; ++j)
+      {
+        desc->data[i+j].point.x += offset_x;
+        desc->data[i+j].point.y += offset_y;
+      }
+}
+
+GimpBezierDesc *
+gimp_bezier_desc_copy (const GimpBezierDesc *desc)
+{
+  g_return_val_if_fail (desc != NULL, NULL);
+
+  return gimp_bezier_desc_new (g_memdup (desc->data,
+                                         desc->num_data * sizeof (cairo_path_data_t)),
+                               desc->num_data);
+}
+
+void
+gimp_bezier_desc_free (GimpBezierDesc *desc)
+{
+  g_return_if_fail (desc != NULL);
+
+  g_free (desc->data);
+  g_slice_free (GimpBezierDesc, desc);
+}