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-rw-r--r--app/vectors/gimpvectors.c1255
1 files changed, 1255 insertions, 0 deletions
diff --git a/app/vectors/gimpvectors.c b/app/vectors/gimpvectors.c
new file mode 100644
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--- /dev/null
+++ b/app/vectors/gimpvectors.c
@@ -0,0 +1,1255 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpvectors.c
+ * 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/>.
+ */
+
+#include "config.h"
+
+#include <cairo.h>
+#include <gegl.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "vectors-types.h"
+
+#include "core/gimp.h"
+#include "core/gimp-transform-utils.h"
+#include "core/gimpbezierdesc.h"
+#include "core/gimpchannel-select.h"
+#include "core/gimpcontainer.h"
+#include "core/gimpcontext.h"
+#include "core/gimpdrawable-fill.h"
+#include "core/gimpdrawable-stroke.h"
+#include "core/gimperror.h"
+#include "core/gimpimage.h"
+#include "core/gimpimage-undo-push.h"
+#include "core/gimpmarshal.h"
+#include "core/gimppaintinfo.h"
+#include "core/gimpstrokeoptions.h"
+
+#include "paint/gimppaintcore-stroke.h"
+#include "paint/gimppaintoptions.h"
+
+#include "gimpanchor.h"
+#include "gimpstroke.h"
+#include "gimpvectors.h"
+#include "gimpvectors-preview.h"
+
+#include "gimp-intl.h"
+
+
+enum
+{
+ FREEZE,
+ THAW,
+ LAST_SIGNAL
+};
+
+
+static void gimp_vectors_finalize (GObject *object);
+
+static gint64 gimp_vectors_get_memsize (GimpObject *object,
+ gint64 *gui_size);
+
+static gboolean gimp_vectors_is_attached (GimpItem *item);
+static GimpItemTree * gimp_vectors_get_tree (GimpItem *item);
+static gboolean gimp_vectors_bounds (GimpItem *item,
+ gdouble *x,
+ gdouble *y,
+ gdouble *width,
+ gdouble *height);
+static GimpItem * gimp_vectors_duplicate (GimpItem *item,
+ GType new_type);
+static void gimp_vectors_convert (GimpItem *item,
+ GimpImage *dest_image,
+ GType old_type);
+static void gimp_vectors_translate (GimpItem *item,
+ gdouble offset_x,
+ gdouble offset_y,
+ gboolean push_undo);
+static void gimp_vectors_scale (GimpItem *item,
+ gint new_width,
+ gint new_height,
+ gint new_offset_x,
+ gint new_offset_y,
+ GimpInterpolationType interp_type,
+ GimpProgress *progress);
+static void gimp_vectors_resize (GimpItem *item,
+ GimpContext *context,
+ GimpFillType fill_type,
+ gint new_width,
+ gint new_height,
+ gint offset_x,
+ gint offset_y);
+static void gimp_vectors_flip (GimpItem *item,
+ GimpContext *context,
+ GimpOrientationType flip_type,
+ gdouble axis,
+ gboolean clip_result);
+static void gimp_vectors_rotate (GimpItem *item,
+ GimpContext *context,
+ GimpRotationType rotate_type,
+ gdouble center_x,
+ gdouble center_y,
+ gboolean clip_result);
+static void gimp_vectors_transform (GimpItem *item,
+ GimpContext *context,
+ const GimpMatrix3 *matrix,
+ GimpTransformDirection direction,
+ GimpInterpolationType interp_type,
+ GimpTransformResize clip_result,
+ GimpProgress *progress);
+static GimpTransformResize
+ gimp_vectors_get_clip (GimpItem *item,
+ GimpTransformResize clip_result);
+static gboolean gimp_vectors_fill (GimpItem *item,
+ GimpDrawable *drawable,
+ GimpFillOptions *fill_options,
+ gboolean push_undo,
+ GimpProgress *progress,
+ GError **error);
+static gboolean gimp_vectors_stroke (GimpItem *item,
+ GimpDrawable *drawable,
+ GimpStrokeOptions *stroke_options,
+ gboolean push_undo,
+ GimpProgress *progress,
+ GError **error);
+static void gimp_vectors_to_selection (GimpItem *item,
+ GimpChannelOps op,
+ gboolean antialias,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y);
+
+static void gimp_vectors_real_freeze (GimpVectors *vectors);
+static void gimp_vectors_real_thaw (GimpVectors *vectors);
+static void gimp_vectors_real_stroke_add (GimpVectors *vectors,
+ GimpStroke *stroke);
+static void gimp_vectors_real_stroke_remove (GimpVectors *vectors,
+ GimpStroke *stroke);
+static GimpStroke * gimp_vectors_real_stroke_get (GimpVectors *vectors,
+ const GimpCoords *coord);
+static GimpStroke *gimp_vectors_real_stroke_get_next(GimpVectors *vectors,
+ GimpStroke *prev);
+static gdouble gimp_vectors_real_stroke_get_length (GimpVectors *vectors,
+ GimpStroke *prev);
+static GimpAnchor * gimp_vectors_real_anchor_get (GimpVectors *vectors,
+ const GimpCoords *coord,
+ GimpStroke **ret_stroke);
+static void gimp_vectors_real_anchor_delete (GimpVectors *vectors,
+ GimpAnchor *anchor);
+static gdouble gimp_vectors_real_get_length (GimpVectors *vectors,
+ const GimpAnchor *start);
+static gdouble gimp_vectors_real_get_distance (GimpVectors *vectors,
+ const GimpCoords *coord);
+static gint gimp_vectors_real_interpolate (GimpVectors *vectors,
+ GimpStroke *stroke,
+ gdouble precision,
+ gint max_points,
+ GimpCoords *ret_coords);
+
+static GimpBezierDesc * gimp_vectors_make_bezier (GimpVectors *vectors);
+static GimpBezierDesc * gimp_vectors_real_make_bezier (GimpVectors *vectors);
+
+
+G_DEFINE_TYPE (GimpVectors, gimp_vectors, GIMP_TYPE_ITEM)
+
+#define parent_class gimp_vectors_parent_class
+
+static guint gimp_vectors_signals[LAST_SIGNAL] = { 0 };
+
+
+static void
+gimp_vectors_class_init (GimpVectorsClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
+ GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
+ GimpItemClass *item_class = GIMP_ITEM_CLASS (klass);
+
+ gimp_vectors_signals[FREEZE] =
+ g_signal_new ("freeze",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GimpVectorsClass, freeze),
+ NULL, NULL,
+ gimp_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ gimp_vectors_signals[THAW] =
+ g_signal_new ("thaw",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GimpVectorsClass, thaw),
+ NULL, NULL,
+ gimp_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ object_class->finalize = gimp_vectors_finalize;
+
+ gimp_object_class->get_memsize = gimp_vectors_get_memsize;
+
+ viewable_class->get_new_preview = gimp_vectors_get_new_preview;
+ viewable_class->default_icon_name = "gimp-path";
+
+ item_class->is_attached = gimp_vectors_is_attached;
+ item_class->get_tree = gimp_vectors_get_tree;
+ item_class->bounds = gimp_vectors_bounds;
+ item_class->duplicate = gimp_vectors_duplicate;
+ item_class->convert = gimp_vectors_convert;
+ item_class->translate = gimp_vectors_translate;
+ item_class->scale = gimp_vectors_scale;
+ item_class->resize = gimp_vectors_resize;
+ item_class->flip = gimp_vectors_flip;
+ item_class->rotate = gimp_vectors_rotate;
+ item_class->transform = gimp_vectors_transform;
+ item_class->get_clip = gimp_vectors_get_clip;
+ item_class->fill = gimp_vectors_fill;
+ item_class->stroke = gimp_vectors_stroke;
+ item_class->to_selection = gimp_vectors_to_selection;
+ item_class->default_name = _("Path");
+ item_class->rename_desc = C_("undo-type", "Rename Path");
+ item_class->translate_desc = C_("undo-type", "Move Path");
+ item_class->scale_desc = C_("undo-type", "Scale Path");
+ item_class->resize_desc = C_("undo-type", "Resize Path");
+ item_class->flip_desc = C_("undo-type", "Flip Path");
+ item_class->rotate_desc = C_("undo-type", "Rotate Path");
+ item_class->transform_desc = C_("undo-type", "Transform Path");
+ item_class->fill_desc = C_("undo-type", "Fill Path");
+ item_class->stroke_desc = C_("undo-type", "Stroke Path");
+ item_class->to_selection_desc = C_("undo-type", "Path to Selection");
+ item_class->reorder_desc = C_("undo-type", "Reorder Path");
+ item_class->raise_desc = C_("undo-type", "Raise Path");
+ item_class->raise_to_top_desc = C_("undo-type", "Raise Path to Top");
+ item_class->lower_desc = C_("undo-type", "Lower Path");
+ item_class->lower_to_bottom_desc = C_("undo-type", "Lower Path to Bottom");
+ item_class->raise_failed = _("Path cannot be raised higher.");
+ item_class->lower_failed = _("Path cannot be lowered more.");
+
+ klass->freeze = gimp_vectors_real_freeze;
+ klass->thaw = gimp_vectors_real_thaw;
+
+ klass->stroke_add = gimp_vectors_real_stroke_add;
+ klass->stroke_remove = gimp_vectors_real_stroke_remove;
+ klass->stroke_get = gimp_vectors_real_stroke_get;
+ klass->stroke_get_next = gimp_vectors_real_stroke_get_next;
+ klass->stroke_get_length = gimp_vectors_real_stroke_get_length;
+
+ klass->anchor_get = gimp_vectors_real_anchor_get;
+ klass->anchor_delete = gimp_vectors_real_anchor_delete;
+
+ klass->get_length = gimp_vectors_real_get_length;
+ klass->get_distance = gimp_vectors_real_get_distance;
+ klass->interpolate = gimp_vectors_real_interpolate;
+
+ klass->make_bezier = gimp_vectors_real_make_bezier;
+}
+
+static void
+gimp_vectors_init (GimpVectors *vectors)
+{
+ gimp_item_set_visible (GIMP_ITEM (vectors), FALSE, FALSE);
+
+ vectors->strokes = g_queue_new ();
+ vectors->stroke_to_list = g_hash_table_new (g_direct_hash, g_direct_equal);
+ vectors->last_stroke_ID = 0;
+ vectors->freeze_count = 0;
+ vectors->precision = 0.2;
+
+ vectors->bezier_desc = NULL;
+ vectors->bounds_valid = FALSE;
+}
+
+static void
+gimp_vectors_finalize (GObject *object)
+{
+ GimpVectors *vectors = GIMP_VECTORS (object);
+
+ if (vectors->bezier_desc)
+ {
+ gimp_bezier_desc_free (vectors->bezier_desc);
+ vectors->bezier_desc = NULL;
+ }
+
+ if (vectors->strokes)
+ {
+ g_queue_free_full (vectors->strokes, (GDestroyNotify) g_object_unref);
+ vectors->strokes = NULL;
+ }
+
+ if (vectors->stroke_to_list)
+ {
+ g_hash_table_destroy (vectors->stroke_to_list);
+ vectors->stroke_to_list = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gint64
+gimp_vectors_get_memsize (GimpObject *object,
+ gint64 *gui_size)
+{
+ GimpVectors *vectors;
+ GList *list;
+ gint64 memsize = 0;
+
+ vectors = GIMP_VECTORS (object);
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ memsize += (gimp_object_get_memsize (GIMP_OBJECT (list->data), gui_size) +
+ sizeof (GList));
+
+ return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
+ gui_size);
+}
+
+static gboolean
+gimp_vectors_is_attached (GimpItem *item)
+{
+ GimpImage *image = gimp_item_get_image (item);
+
+ return (GIMP_IS_IMAGE (image) &&
+ gimp_container_have (gimp_image_get_vectors (image),
+ GIMP_OBJECT (item)));
+}
+
+static GimpItemTree *
+gimp_vectors_get_tree (GimpItem *item)
+{
+ if (gimp_item_is_attached (item))
+ {
+ GimpImage *image = gimp_item_get_image (item);
+
+ return gimp_image_get_vectors_tree (image);
+ }
+
+ return NULL;
+}
+
+static gboolean
+gimp_vectors_bounds (GimpItem *item,
+ gdouble *x,
+ gdouble *y,
+ gdouble *width,
+ gdouble *height)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+
+ if (! vectors->bounds_valid)
+ {
+ GimpStroke *stroke;
+
+ vectors->bounds_empty = TRUE;
+ vectors->bounds_x1 = vectors->bounds_x2 = 0.0;
+ vectors->bounds_y1 = vectors->bounds_y2 = 0.0;
+
+ for (stroke = gimp_vectors_stroke_get_next (vectors, NULL);
+ stroke;
+ stroke = gimp_vectors_stroke_get_next (vectors, stroke))
+ {
+ GArray *stroke_coords;
+ gboolean closed;
+
+ stroke_coords = gimp_stroke_interpolate (stroke, 1.0, &closed);
+
+ if (stroke_coords)
+ {
+ GimpCoords point;
+ gint i;
+
+ if (vectors->bounds_empty && stroke_coords->len > 0)
+ {
+ point = g_array_index (stroke_coords, GimpCoords, 0);
+
+ vectors->bounds_x1 = vectors->bounds_x2 = point.x;
+ vectors->bounds_y1 = vectors->bounds_y2 = point.y;
+
+ vectors->bounds_empty = FALSE;
+ }
+
+ for (i = 0; i < stroke_coords->len; i++)
+ {
+ point = g_array_index (stroke_coords, GimpCoords, i);
+
+ vectors->bounds_x1 = MIN (vectors->bounds_x1, point.x);
+ vectors->bounds_y1 = MIN (vectors->bounds_y1, point.y);
+ vectors->bounds_x2 = MAX (vectors->bounds_x2, point.x);
+ vectors->bounds_y2 = MAX (vectors->bounds_y2, point.y);
+ }
+
+ g_array_free (stroke_coords, TRUE);
+ }
+ }
+
+ vectors->bounds_valid = TRUE;
+ }
+
+ *x = vectors->bounds_x1;
+ *y = vectors->bounds_y1;
+ *width = vectors->bounds_x2 - vectors->bounds_x1;
+ *height = vectors->bounds_y2 - vectors->bounds_y1;
+
+ return ! vectors->bounds_empty;
+}
+
+static GimpItem *
+gimp_vectors_duplicate (GimpItem *item,
+ GType new_type)
+{
+ GimpItem *new_item;
+
+ g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_VECTORS), NULL);
+
+ new_item = GIMP_ITEM_CLASS (parent_class)->duplicate (item, new_type);
+
+ if (GIMP_IS_VECTORS (new_item))
+ {
+ GimpVectors *vectors = GIMP_VECTORS (item);
+ GimpVectors *new_vectors = GIMP_VECTORS (new_item);
+
+ gimp_vectors_copy_strokes (vectors, new_vectors);
+ }
+
+ return new_item;
+}
+
+static void
+gimp_vectors_convert (GimpItem *item,
+ GimpImage *dest_image,
+ GType old_type)
+{
+ gimp_item_set_size (item,
+ gimp_image_get_width (dest_image),
+ gimp_image_get_height (dest_image));
+
+ GIMP_ITEM_CLASS (parent_class)->convert (item, dest_image, old_type);
+}
+
+static void
+gimp_vectors_translate (GimpItem *item,
+ gdouble offset_x,
+ gdouble offset_y,
+ gboolean push_undo)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+ GList *list;
+
+ gimp_vectors_freeze (vectors);
+
+ if (push_undo)
+ gimp_image_undo_push_vectors_mod (gimp_item_get_image (item),
+ _("Move Path"),
+ vectors);
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ {
+ GimpStroke *stroke = list->data;
+
+ gimp_stroke_translate (stroke, offset_x, offset_y);
+ }
+
+ gimp_vectors_thaw (vectors);
+}
+
+static void
+gimp_vectors_scale (GimpItem *item,
+ gint new_width,
+ gint new_height,
+ gint new_offset_x,
+ gint new_offset_y,
+ GimpInterpolationType interpolation_type,
+ GimpProgress *progress)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+ GimpImage *image = gimp_item_get_image (item);
+ GList *list;
+
+ gimp_vectors_freeze (vectors);
+
+ if (gimp_item_is_attached (item))
+ gimp_image_undo_push_vectors_mod (image, NULL, vectors);
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ {
+ GimpStroke *stroke = list->data;
+
+ gimp_stroke_scale (stroke,
+ (gdouble) new_width / (gdouble) gimp_item_get_width (item),
+ (gdouble) new_height / (gdouble) gimp_item_get_height (item));
+ gimp_stroke_translate (stroke, new_offset_x, new_offset_y);
+ }
+
+ GIMP_ITEM_CLASS (parent_class)->scale (item,
+ gimp_image_get_width (image),
+ gimp_image_get_height (image),
+ 0, 0,
+ interpolation_type, progress);
+
+ gimp_vectors_thaw (vectors);
+}
+
+static void
+gimp_vectors_resize (GimpItem *item,
+ GimpContext *context,
+ GimpFillType fill_type,
+ gint new_width,
+ gint new_height,
+ gint offset_x,
+ gint offset_y)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+ GimpImage *image = gimp_item_get_image (item);
+ GList *list;
+
+ gimp_vectors_freeze (vectors);
+
+ if (gimp_item_is_attached (item))
+ gimp_image_undo_push_vectors_mod (image, NULL, vectors);
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ {
+ GimpStroke *stroke = list->data;
+
+ gimp_stroke_translate (stroke, offset_x, offset_y);
+ }
+
+ GIMP_ITEM_CLASS (parent_class)->resize (item, context, fill_type,
+ gimp_image_get_width (image),
+ gimp_image_get_height (image),
+ 0, 0);
+
+ gimp_vectors_thaw (vectors);
+}
+
+static void
+gimp_vectors_flip (GimpItem *item,
+ GimpContext *context,
+ GimpOrientationType flip_type,
+ gdouble axis,
+ gboolean clip_result)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+ GList *list;
+ GimpMatrix3 matrix;
+
+ gimp_matrix3_identity (&matrix);
+ gimp_transform_matrix_flip (&matrix, flip_type, axis);
+
+ gimp_vectors_freeze (vectors);
+
+ gimp_image_undo_push_vectors_mod (gimp_item_get_image (item),
+ _("Flip Path"),
+ vectors);
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ {
+ GimpStroke *stroke = list->data;
+
+ gimp_stroke_transform (stroke, &matrix, NULL);
+ }
+
+ gimp_vectors_thaw (vectors);
+}
+
+static void
+gimp_vectors_rotate (GimpItem *item,
+ GimpContext *context,
+ GimpRotationType rotate_type,
+ gdouble center_x,
+ gdouble center_y,
+ gboolean clip_result)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+ GList *list;
+ GimpMatrix3 matrix;
+
+ gimp_matrix3_identity (&matrix);
+ gimp_transform_matrix_rotate (&matrix, rotate_type, center_x, center_y);
+
+ gimp_vectors_freeze (vectors);
+
+ gimp_image_undo_push_vectors_mod (gimp_item_get_image (item),
+ _("Rotate Path"),
+ vectors);
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ {
+ GimpStroke *stroke = list->data;
+
+ gimp_stroke_transform (stroke, &matrix, NULL);
+ }
+
+ gimp_vectors_thaw (vectors);
+}
+
+static void
+gimp_vectors_transform (GimpItem *item,
+ GimpContext *context,
+ const GimpMatrix3 *matrix,
+ GimpTransformDirection direction,
+ GimpInterpolationType interpolation_type,
+ GimpTransformResize clip_result,
+ GimpProgress *progress)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+ GimpMatrix3 local_matrix;
+ GQueue strokes;
+ GList *list;
+
+ gimp_vectors_freeze (vectors);
+
+ gimp_image_undo_push_vectors_mod (gimp_item_get_image (item),
+ _("Transform Path"),
+ vectors);
+
+ local_matrix = *matrix;
+
+ if (direction == GIMP_TRANSFORM_BACKWARD)
+ gimp_matrix3_invert (&local_matrix);
+
+ g_queue_init (&strokes);
+
+ while (! g_queue_is_empty (vectors->strokes))
+ {
+ GimpStroke *stroke = g_queue_peek_head (vectors->strokes);
+
+ g_object_ref (stroke);
+
+ gimp_vectors_stroke_remove (vectors, stroke);
+
+ gimp_stroke_transform (stroke, &local_matrix, &strokes);
+
+ g_object_unref (stroke);
+ }
+
+ vectors->last_stroke_ID = 0;
+
+ for (list = strokes.head; list; list = g_list_next (list))
+ {
+ GimpStroke *stroke = list->data;
+
+ gimp_vectors_stroke_add (vectors, stroke);
+
+ g_object_unref (stroke);
+ }
+
+ g_queue_clear (&strokes);
+
+ gimp_vectors_thaw (vectors);
+}
+
+static GimpTransformResize
+gimp_vectors_get_clip (GimpItem *item,
+ GimpTransformResize clip_result)
+{
+ return GIMP_TRANSFORM_RESIZE_ADJUST;
+}
+
+static gboolean
+gimp_vectors_fill (GimpItem *item,
+ GimpDrawable *drawable,
+ GimpFillOptions *fill_options,
+ gboolean push_undo,
+ GimpProgress *progress,
+ GError **error)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+
+ if (g_queue_is_empty (vectors->strokes))
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
+ _("Not enough points to fill"));
+ return FALSE;
+ }
+
+ return gimp_drawable_fill_vectors (drawable, fill_options,
+ vectors, push_undo, error);
+}
+
+static gboolean
+gimp_vectors_stroke (GimpItem *item,
+ GimpDrawable *drawable,
+ GimpStrokeOptions *stroke_options,
+ gboolean push_undo,
+ GimpProgress *progress,
+ GError **error)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+ gboolean retval = FALSE;
+
+ if (g_queue_is_empty (vectors->strokes))
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
+ _("Not enough points to stroke"));
+ return FALSE;
+ }
+
+ switch (gimp_stroke_options_get_method (stroke_options))
+ {
+ case GIMP_STROKE_LINE:
+ retval = gimp_drawable_stroke_vectors (drawable, stroke_options,
+ vectors, push_undo, error);
+ break;
+
+ case GIMP_STROKE_PAINT_METHOD:
+ {
+ GimpPaintInfo *paint_info;
+ GimpPaintCore *core;
+ GimpPaintOptions *paint_options;
+ gboolean emulate_dynamics;
+
+ paint_info = gimp_context_get_paint_info (GIMP_CONTEXT (stroke_options));
+
+ core = g_object_new (paint_info->paint_type, NULL);
+
+ paint_options = gimp_stroke_options_get_paint_options (stroke_options);
+ emulate_dynamics = gimp_stroke_options_get_emulate_dynamics (stroke_options);
+
+ retval = gimp_paint_core_stroke_vectors (core, drawable,
+ paint_options,
+ emulate_dynamics,
+ vectors, push_undo, error);
+
+ g_object_unref (core);
+ }
+ break;
+
+ default:
+ g_return_val_if_reached (FALSE);
+ }
+
+ return retval;
+}
+
+static void
+gimp_vectors_to_selection (GimpItem *item,
+ GimpChannelOps op,
+ gboolean antialias,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y)
+{
+ GimpVectors *vectors = GIMP_VECTORS (item);
+ GimpImage *image = gimp_item_get_image (item);
+
+ gimp_channel_select_vectors (gimp_image_get_mask (image),
+ GIMP_ITEM_GET_CLASS (item)->to_selection_desc,
+ vectors,
+ op, antialias,
+ feather, feather_radius_x, feather_radius_x,
+ TRUE);
+}
+
+static void
+gimp_vectors_real_freeze (GimpVectors *vectors)
+{
+ /* release cached bezier representation */
+ if (vectors->bezier_desc)
+ {
+ gimp_bezier_desc_free (vectors->bezier_desc);
+ vectors->bezier_desc = NULL;
+ }
+
+ /* invalidate bounds */
+ vectors->bounds_valid = FALSE;
+}
+
+static void
+gimp_vectors_real_thaw (GimpVectors *vectors)
+{
+ gimp_viewable_invalidate_preview (GIMP_VIEWABLE (vectors));
+}
+
+
+/* public functions */
+
+GimpVectors *
+gimp_vectors_new (GimpImage *image,
+ const gchar *name)
+{
+ GimpVectors *vectors;
+
+ g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
+
+ vectors = GIMP_VECTORS (gimp_item_new (GIMP_TYPE_VECTORS,
+ image, name,
+ 0, 0,
+ gimp_image_get_width (image),
+ gimp_image_get_height (image)));
+
+ return vectors;
+}
+
+GimpVectors *
+gimp_vectors_get_parent (GimpVectors *vectors)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
+
+ return GIMP_VECTORS (gimp_viewable_get_parent (GIMP_VIEWABLE (vectors)));
+}
+
+void
+gimp_vectors_freeze (GimpVectors *vectors)
+{
+ g_return_if_fail (GIMP_IS_VECTORS (vectors));
+
+ vectors->freeze_count++;
+
+ if (vectors->freeze_count == 1)
+ g_signal_emit (vectors, gimp_vectors_signals[FREEZE], 0);
+}
+
+void
+gimp_vectors_thaw (GimpVectors *vectors)
+{
+ g_return_if_fail (GIMP_IS_VECTORS (vectors));
+ g_return_if_fail (vectors->freeze_count > 0);
+
+ vectors->freeze_count--;
+
+ if (vectors->freeze_count == 0)
+ g_signal_emit (vectors, gimp_vectors_signals[THAW], 0);
+}
+
+void
+gimp_vectors_copy_strokes (GimpVectors *src_vectors,
+ GimpVectors *dest_vectors)
+{
+ g_return_if_fail (GIMP_IS_VECTORS (src_vectors));
+ g_return_if_fail (GIMP_IS_VECTORS (dest_vectors));
+
+ gimp_vectors_freeze (dest_vectors);
+
+ g_queue_free_full (dest_vectors->strokes, (GDestroyNotify) g_object_unref);
+ dest_vectors->strokes = g_queue_new ();
+ g_hash_table_remove_all (dest_vectors->stroke_to_list);
+
+ dest_vectors->last_stroke_ID = 0;
+
+ gimp_vectors_add_strokes (src_vectors, dest_vectors);
+
+ gimp_vectors_thaw (dest_vectors);
+}
+
+
+void
+gimp_vectors_add_strokes (GimpVectors *src_vectors,
+ GimpVectors *dest_vectors)
+{
+ GList *stroke;
+
+ g_return_if_fail (GIMP_IS_VECTORS (src_vectors));
+ g_return_if_fail (GIMP_IS_VECTORS (dest_vectors));
+
+ gimp_vectors_freeze (dest_vectors);
+
+ for (stroke = src_vectors->strokes->head;
+ stroke != NULL;
+ stroke = g_list_next (stroke))
+ {
+ GimpStroke *newstroke = gimp_stroke_duplicate (stroke->data);
+
+ g_queue_push_tail (dest_vectors->strokes, newstroke);
+
+ /* Also add to {stroke: GList node} map */
+ g_hash_table_insert (dest_vectors->stroke_to_list,
+ newstroke,
+ g_queue_peek_tail_link (dest_vectors->strokes));
+
+ dest_vectors->last_stroke_ID++;
+ gimp_stroke_set_ID (newstroke,
+ dest_vectors->last_stroke_ID);
+ }
+
+ gimp_vectors_thaw (dest_vectors);
+}
+
+
+void
+gimp_vectors_stroke_add (GimpVectors *vectors,
+ GimpStroke *stroke)
+{
+ g_return_if_fail (GIMP_IS_VECTORS (vectors));
+ g_return_if_fail (GIMP_IS_STROKE (stroke));
+
+ gimp_vectors_freeze (vectors);
+
+ GIMP_VECTORS_GET_CLASS (vectors)->stroke_add (vectors, stroke);
+
+ gimp_vectors_thaw (vectors);
+}
+
+static void
+gimp_vectors_real_stroke_add (GimpVectors *vectors,
+ GimpStroke *stroke)
+{
+ /*
+ * Don't prepend into vector->strokes. See ChangeLog 2003-05-21
+ * --Mitch
+ */
+ g_queue_push_tail (vectors->strokes, g_object_ref (stroke));
+
+ /* Also add to {stroke: GList node} map */
+ g_hash_table_insert (vectors->stroke_to_list,
+ stroke,
+ g_queue_peek_tail_link (vectors->strokes));
+
+ vectors->last_stroke_ID++;
+ gimp_stroke_set_ID (stroke, vectors->last_stroke_ID);
+}
+
+void
+gimp_vectors_stroke_remove (GimpVectors *vectors,
+ GimpStroke *stroke)
+{
+ g_return_if_fail (GIMP_IS_VECTORS (vectors));
+ g_return_if_fail (GIMP_IS_STROKE (stroke));
+
+ gimp_vectors_freeze (vectors);
+
+ GIMP_VECTORS_GET_CLASS (vectors)->stroke_remove (vectors, stroke);
+
+ gimp_vectors_thaw (vectors);
+}
+
+static void
+gimp_vectors_real_stroke_remove (GimpVectors *vectors,
+ GimpStroke *stroke)
+{
+ GList *list = g_hash_table_lookup (vectors->stroke_to_list, stroke);
+
+ if (list)
+ {
+ g_queue_delete_link (vectors->strokes, list);
+ g_hash_table_remove (vectors->stroke_to_list, stroke);
+ g_object_unref (stroke);
+ }
+}
+
+gint
+gimp_vectors_get_n_strokes (GimpVectors *vectors)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0);
+
+ return g_queue_get_length (vectors->strokes);
+}
+
+
+GimpStroke *
+gimp_vectors_stroke_get (GimpVectors *vectors,
+ const GimpCoords *coord)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
+
+ return GIMP_VECTORS_GET_CLASS (vectors)->stroke_get (vectors, coord);
+}
+
+static GimpStroke *
+gimp_vectors_real_stroke_get (GimpVectors *vectors,
+ const GimpCoords *coord)
+{
+ GimpStroke *minstroke = NULL;
+ gdouble mindist = G_MAXDOUBLE;
+ GList *list;
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ {
+ GimpStroke *stroke = list->data;
+ GimpAnchor *anchor = gimp_stroke_anchor_get (stroke, coord);
+
+ if (anchor)
+ {
+ gdouble dx = coord->x - anchor->position.x;
+ gdouble dy = coord->y - anchor->position.y;
+
+ if (mindist > dx * dx + dy * dy)
+ {
+ mindist = dx * dx + dy * dy;
+ minstroke = stroke;
+ }
+ }
+ }
+
+ return minstroke;
+}
+
+GimpStroke *
+gimp_vectors_stroke_get_by_ID (GimpVectors *vectors,
+ gint id)
+{
+ GList *list;
+
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ {
+ if (gimp_stroke_get_ID (list->data) == id)
+ return list->data;
+ }
+
+ return NULL;
+}
+
+
+GimpStroke *
+gimp_vectors_stroke_get_next (GimpVectors *vectors,
+ GimpStroke *prev)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
+
+ return GIMP_VECTORS_GET_CLASS (vectors)->stroke_get_next (vectors, prev);
+}
+
+static GimpStroke *
+gimp_vectors_real_stroke_get_next (GimpVectors *vectors,
+ GimpStroke *prev)
+{
+ if (! prev)
+ {
+ return g_queue_peek_head (vectors->strokes);
+ }
+ else
+ {
+ GList *stroke = g_hash_table_lookup (vectors->stroke_to_list, prev);
+
+ g_return_val_if_fail (stroke != NULL, NULL);
+
+ return stroke->next ? stroke->next->data : NULL;
+ }
+}
+
+
+gdouble
+gimp_vectors_stroke_get_length (GimpVectors *vectors,
+ GimpStroke *stroke)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
+ g_return_val_if_fail (GIMP_IS_STROKE (stroke), 0.0);
+
+ return GIMP_VECTORS_GET_CLASS (vectors)->stroke_get_length (vectors, stroke);
+}
+
+static gdouble
+gimp_vectors_real_stroke_get_length (GimpVectors *vectors,
+ GimpStroke *stroke)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
+ g_return_val_if_fail (GIMP_IS_STROKE (stroke), 0.0);
+
+ return gimp_stroke_get_length (stroke, vectors->precision);
+}
+
+
+GimpAnchor *
+gimp_vectors_anchor_get (GimpVectors *vectors,
+ const GimpCoords *coord,
+ GimpStroke **ret_stroke)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
+
+ return GIMP_VECTORS_GET_CLASS (vectors)->anchor_get (vectors, coord,
+ ret_stroke);
+}
+
+static GimpAnchor *
+gimp_vectors_real_anchor_get (GimpVectors *vectors,
+ const GimpCoords *coord,
+ GimpStroke **ret_stroke)
+{
+ GimpAnchor *minanchor = NULL;
+ gdouble mindist = -1;
+ GList *list;
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ {
+ GimpStroke *stroke = list->data;
+ GimpAnchor *anchor = gimp_stroke_anchor_get (stroke, coord);
+
+ if (anchor)
+ {
+ gdouble dx = coord->x - anchor->position.x;
+ gdouble dy = coord->y - anchor->position.y;
+
+ if (mindist > dx * dx + dy * dy || mindist < 0)
+ {
+ mindist = dx * dx + dy * dy;
+ minanchor = anchor;
+
+ if (ret_stroke)
+ *ret_stroke = stroke;
+ }
+ }
+ }
+
+ return minanchor;
+}
+
+
+void
+gimp_vectors_anchor_delete (GimpVectors *vectors,
+ GimpAnchor *anchor)
+{
+ g_return_if_fail (GIMP_IS_VECTORS (vectors));
+ g_return_if_fail (anchor != NULL);
+
+ GIMP_VECTORS_GET_CLASS (vectors)->anchor_delete (vectors, anchor);
+}
+
+static void
+gimp_vectors_real_anchor_delete (GimpVectors *vectors,
+ GimpAnchor *anchor)
+{
+}
+
+
+void
+gimp_vectors_anchor_select (GimpVectors *vectors,
+ GimpStroke *target_stroke,
+ GimpAnchor *anchor,
+ gboolean selected,
+ gboolean exclusive)
+{
+ GList *list;
+
+ for (list = vectors->strokes->head; list; list = g_list_next (list))
+ {
+ GimpStroke *stroke = list->data;
+
+ gimp_stroke_anchor_select (stroke,
+ stroke == target_stroke ? anchor : NULL,
+ selected, exclusive);
+ }
+}
+
+
+gdouble
+gimp_vectors_get_length (GimpVectors *vectors,
+ const GimpAnchor *start)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
+
+ return GIMP_VECTORS_GET_CLASS (vectors)->get_length (vectors, start);
+}
+
+static gdouble
+gimp_vectors_real_get_length (GimpVectors *vectors,
+ const GimpAnchor *start)
+{
+ g_printerr ("gimp_vectors_get_length: default implementation\n");
+
+ return 0;
+}
+
+
+gdouble
+gimp_vectors_get_distance (GimpVectors *vectors,
+ const GimpCoords *coord)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
+
+ return GIMP_VECTORS_GET_CLASS (vectors)->get_distance (vectors, coord);
+}
+
+static gdouble
+gimp_vectors_real_get_distance (GimpVectors *vectors,
+ const GimpCoords *coord)
+{
+ g_printerr ("gimp_vectors_get_distance: default implementation\n");
+
+ return 0;
+}
+
+gint
+gimp_vectors_interpolate (GimpVectors *vectors,
+ GimpStroke *stroke,
+ gdouble precision,
+ gint max_points,
+ GimpCoords *ret_coords)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0);
+
+ return GIMP_VECTORS_GET_CLASS (vectors)->interpolate (vectors, stroke,
+ precision, max_points,
+ ret_coords);
+}
+
+static gint
+gimp_vectors_real_interpolate (GimpVectors *vectors,
+ GimpStroke *stroke,
+ gdouble precision,
+ gint max_points,
+ GimpCoords *ret_coords)
+{
+ g_printerr ("gimp_vectors_interpolate: default implementation\n");
+
+ return 0;
+}
+
+const GimpBezierDesc *
+gimp_vectors_get_bezier (GimpVectors *vectors)
+{
+ g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
+
+ if (! vectors->bezier_desc)
+ {
+ vectors->bezier_desc = gimp_vectors_make_bezier (vectors);
+ }
+
+ return vectors->bezier_desc;
+}
+
+static GimpBezierDesc *
+gimp_vectors_make_bezier (GimpVectors *vectors)
+{
+ return GIMP_VECTORS_GET_CLASS (vectors)->make_bezier (vectors);
+}
+
+static GimpBezierDesc *
+gimp_vectors_real_make_bezier (GimpVectors *vectors)
+{
+ GimpStroke *stroke;
+ GArray *cmd_array;
+ GimpBezierDesc *ret_bezdesc = NULL;
+
+ cmd_array = g_array_new (FALSE, FALSE, sizeof (cairo_path_data_t));
+
+ for (stroke = gimp_vectors_stroke_get_next (vectors, NULL);
+ stroke;
+ stroke = gimp_vectors_stroke_get_next (vectors, stroke))
+ {
+ GimpBezierDesc *bezdesc = gimp_stroke_make_bezier (stroke);
+
+ if (bezdesc)
+ {
+ cmd_array = g_array_append_vals (cmd_array, bezdesc->data,
+ bezdesc->num_data);
+ gimp_bezier_desc_free (bezdesc);
+ }
+ }
+
+ if (cmd_array->len > 0)
+ ret_bezdesc = gimp_bezier_desc_new ((cairo_path_data_t *) cmd_array->data,
+ cmd_array->len);
+
+ g_array_free (cmd_array, FALSE);
+
+ return ret_bezdesc;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 01:21:49 +0000