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-rw-r--r--app/core/gimpchannel-select.c605
1 files changed, 605 insertions, 0 deletions
diff --git a/app/core/gimpchannel-select.c b/app/core/gimpchannel-select.c
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--- /dev/null
+++ b/app/core/gimpchannel-select.c
@@ -0,0 +1,605 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * 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 <string.h>
+
+#include <cairo.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "core-types.h"
+
+#include "gegl/gimp-gegl-apply-operation.h"
+#include "gegl/gimp-gegl-loops.h"
+#include "gegl/gimp-gegl-mask-combine.h"
+
+#include "gimpchannel.h"
+#include "gimpchannel-select.h"
+#include "gimpchannel-combine.h"
+#include "gimppickable.h"
+#include "gimppickable-contiguous-region.h"
+#include "gimpscanconvert.h"
+
+#include "vectors/gimpstroke.h"
+#include "vectors/gimpvectors.h"
+
+#include "gimp-intl.h"
+
+
+/* basic selection functions */
+
+void
+gimp_channel_select_rectangle (GimpChannel *channel,
+ gint x,
+ gint y,
+ gint w,
+ gint h,
+ GimpChannelOps op,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y,
+ gboolean push_undo)
+{
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+
+ if (push_undo)
+ gimp_channel_push_undo (channel, C_("undo-type", "Rectangle Select"));
+
+ /* if feathering for rect, make a new mask with the
+ * rectangle and feather that with the old mask
+ */
+ if (feather)
+ {
+ GimpItem *item = GIMP_ITEM (channel);
+ GeglBuffer *add_on;
+
+ add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
+ gimp_item_get_width (item),
+ gimp_item_get_height (item)),
+ babl_format ("Y float"));
+
+ gimp_gegl_mask_combine_rect (add_on, GIMP_CHANNEL_OP_REPLACE, x, y, w, h);
+
+ gimp_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
+ feather_radius_x,
+ feather_radius_y,
+ TRUE);
+
+ gimp_channel_combine_buffer (channel, add_on, op, 0, 0);
+ g_object_unref (add_on);
+ }
+ else
+ {
+ gimp_channel_combine_rect (channel, op, x, y, w, h);
+ }
+}
+
+void
+gimp_channel_select_ellipse (GimpChannel *channel,
+ gint x,
+ gint y,
+ gint w,
+ gint h,
+ GimpChannelOps op,
+ gboolean antialias,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y,
+ gboolean push_undo)
+{
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+
+ if (push_undo)
+ gimp_channel_push_undo (channel, C_("undo-type", "Ellipse Select"));
+
+ /* if feathering for rect, make a new mask with the
+ * rectangle and feather that with the old mask
+ */
+ if (feather)
+ {
+ GimpItem *item = GIMP_ITEM (channel);
+ GeglBuffer *add_on;
+
+ add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
+ gimp_item_get_width (item),
+ gimp_item_get_height (item)),
+ babl_format ("Y float"));
+
+ gimp_gegl_mask_combine_ellipse (add_on, GIMP_CHANNEL_OP_REPLACE,
+ x, y, w, h, antialias);
+
+ gimp_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
+ feather_radius_x,
+ feather_radius_y,
+ TRUE);
+
+ gimp_channel_combine_buffer (channel, add_on, op, 0, 0);
+ g_object_unref (add_on);
+ }
+ else
+ {
+ gimp_channel_combine_ellipse (channel, op, x, y, w, h, antialias);
+ }
+}
+
+void
+gimp_channel_select_round_rect (GimpChannel *channel,
+ gint x,
+ gint y,
+ gint w,
+ gint h,
+ gdouble corner_radius_x,
+ gdouble corner_radius_y,
+ GimpChannelOps op,
+ gboolean antialias,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y,
+ gboolean push_undo)
+{
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+
+ if (push_undo)
+ gimp_channel_push_undo (channel, C_("undo-type", "Rounded Rectangle Select"));
+
+ /* if feathering for rect, make a new mask with the
+ * rectangle and feather that with the old mask
+ */
+ if (feather)
+ {
+ GimpItem *item = GIMP_ITEM (channel);
+ GeglBuffer *add_on;
+
+ add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
+ gimp_item_get_width (item),
+ gimp_item_get_height (item)),
+ babl_format ("Y float"));
+
+ gimp_gegl_mask_combine_ellipse_rect (add_on, GIMP_CHANNEL_OP_REPLACE,
+ x, y, w, h,
+ corner_radius_x, corner_radius_y,
+ antialias);
+
+ gimp_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
+ feather_radius_x,
+ feather_radius_y,
+ TRUE);
+
+ gimp_channel_combine_buffer (channel, add_on, op, 0, 0);
+ g_object_unref (add_on);
+ }
+ else
+ {
+ gimp_channel_combine_ellipse_rect (channel, op, x, y, w, h,
+ corner_radius_x, corner_radius_y,
+ antialias);
+ }
+}
+
+/* select by GimpScanConvert functions */
+
+void
+gimp_channel_select_scan_convert (GimpChannel *channel,
+ const gchar *undo_desc,
+ GimpScanConvert *scan_convert,
+ gint offset_x,
+ gint offset_y,
+ GimpChannelOps op,
+ gboolean antialias,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y,
+ gboolean push_undo)
+{
+ GimpItem *item;
+ GeglBuffer *add_on;
+
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+ g_return_if_fail (undo_desc != NULL);
+ g_return_if_fail (scan_convert != NULL);
+
+ if (push_undo)
+ gimp_channel_push_undo (channel, undo_desc);
+
+ item = GIMP_ITEM (channel);
+
+ add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
+ gimp_item_get_width (item),
+ gimp_item_get_height (item)),
+ babl_format ("Y float"));
+
+ gimp_scan_convert_render (scan_convert, add_on,
+ offset_x, offset_y, antialias);
+
+ if (feather)
+ gimp_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
+ feather_radius_x,
+ feather_radius_y,
+ TRUE);
+
+ gimp_channel_combine_buffer (channel, add_on, op, 0, 0);
+ g_object_unref (add_on);
+}
+
+void
+gimp_channel_select_polygon (GimpChannel *channel,
+ const gchar *undo_desc,
+ gint n_points,
+ const GimpVector2 *points,
+ GimpChannelOps op,
+ gboolean antialias,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y,
+ gboolean push_undo)
+{
+ GimpScanConvert *scan_convert;
+
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+ g_return_if_fail (undo_desc != NULL);
+
+ scan_convert = gimp_scan_convert_new ();
+
+ gimp_scan_convert_add_polyline (scan_convert, n_points, points, TRUE);
+
+ gimp_channel_select_scan_convert (channel, undo_desc, scan_convert, 0, 0,
+ op, antialias, feather,
+ feather_radius_x, feather_radius_y,
+ push_undo);
+
+ gimp_scan_convert_free (scan_convert);
+}
+
+void
+gimp_channel_select_vectors (GimpChannel *channel,
+ const gchar *undo_desc,
+ GimpVectors *vectors,
+ GimpChannelOps op,
+ gboolean antialias,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y,
+ gboolean push_undo)
+{
+ const GimpBezierDesc *bezier;
+
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+ g_return_if_fail (undo_desc != NULL);
+ g_return_if_fail (GIMP_IS_VECTORS (vectors));
+
+ bezier = gimp_vectors_get_bezier (vectors);
+
+ if (bezier && bezier->num_data > 4)
+ {
+ GimpScanConvert *scan_convert;
+
+ scan_convert = gimp_scan_convert_new ();
+ gimp_scan_convert_add_bezier (scan_convert, bezier);
+
+ gimp_channel_select_scan_convert (channel, undo_desc, scan_convert, 0, 0,
+ op, antialias, feather,
+ feather_radius_x, feather_radius_y,
+ push_undo);
+
+ gimp_scan_convert_free (scan_convert);
+ }
+}
+
+
+/* select by GimpChannel functions */
+
+void
+gimp_channel_select_buffer (GimpChannel *channel,
+ const gchar *undo_desc,
+ GeglBuffer *add_on,
+ gint offset_x,
+ gint offset_y,
+ GimpChannelOps op,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y)
+{
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+ g_return_if_fail (undo_desc != NULL);
+ g_return_if_fail (GEGL_IS_BUFFER (add_on));
+
+ gimp_channel_push_undo (channel, undo_desc);
+
+ if (feather)
+ {
+ GimpItem *item = GIMP_ITEM (channel);
+ GeglBuffer *add_on2;
+
+ add_on2 = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
+ gimp_item_get_width (item),
+ gimp_item_get_height (item)),
+ babl_format ("Y float"));
+
+ gimp_gegl_mask_combine_buffer (add_on2, add_on,
+ GIMP_CHANNEL_OP_REPLACE,
+ offset_x, offset_y);
+
+ gimp_gegl_apply_feather (add_on2, NULL, NULL, add_on2, NULL,
+ feather_radius_x,
+ feather_radius_y,
+ TRUE);
+
+ gimp_channel_combine_buffer (channel, add_on2, op, 0, 0);
+ g_object_unref (add_on2);
+ }
+ else
+ {
+ gimp_channel_combine_buffer (channel, add_on, op, offset_x, offset_y);
+ }
+}
+
+void
+gimp_channel_select_channel (GimpChannel *channel,
+ const gchar *undo_desc,
+ GimpChannel *add_on,
+ gint offset_x,
+ gint offset_y,
+ GimpChannelOps op,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y)
+{
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+ g_return_if_fail (undo_desc != NULL);
+ g_return_if_fail (GIMP_IS_CHANNEL (add_on));
+
+ gimp_channel_select_buffer (channel, undo_desc,
+ gimp_drawable_get_buffer (GIMP_DRAWABLE (add_on)),
+ offset_x, offset_y, op,
+ feather,
+ feather_radius_x, feather_radius_y);
+}
+
+void
+gimp_channel_select_alpha (GimpChannel *channel,
+ GimpDrawable *drawable,
+ GimpChannelOps op,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y)
+{
+ GimpItem *item;
+ GimpChannel *add_on;
+ gint off_x, off_y;
+
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+ g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
+
+ item = GIMP_ITEM (channel);
+
+ if (gimp_drawable_has_alpha (drawable))
+ {
+ add_on = gimp_channel_new_from_alpha (gimp_item_get_image (item),
+ drawable, NULL, NULL);
+ }
+ else
+ {
+ /* no alpha is equivalent to completely opaque alpha,
+ * so simply select the whole layer's extents. --mitch
+ */
+ add_on = gimp_channel_new_mask (gimp_item_get_image (item),
+ gimp_item_get_width (GIMP_ITEM (drawable)),
+ gimp_item_get_height (GIMP_ITEM (drawable)));
+ gimp_channel_all (add_on, FALSE);
+ }
+
+ gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
+
+ gimp_channel_select_channel (channel, C_("undo-type", "Alpha to Selection"), add_on,
+ off_x, off_y,
+ op, feather,
+ feather_radius_x,
+ feather_radius_y);
+ g_object_unref (add_on);
+}
+
+void
+gimp_channel_select_component (GimpChannel *channel,
+ GimpChannelType component,
+ GimpChannelOps op,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y)
+{
+ GimpItem *item;
+ GimpChannel *add_on;
+ const gchar *desc;
+ gchar *undo_desc;
+
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+
+ item = GIMP_ITEM (channel);
+
+ add_on = gimp_channel_new_from_component (gimp_item_get_image (item),
+ component, NULL, NULL);
+
+ if (feather)
+ gimp_channel_feather (add_on,
+ feather_radius_x,
+ feather_radius_y,
+ TRUE,
+ FALSE /* no undo */);
+
+ gimp_enum_get_value (GIMP_TYPE_CHANNEL_TYPE, component,
+ NULL, NULL, &desc, NULL);
+
+ undo_desc = g_strdup_printf (C_("undo-type", "%s Channel to Selection"), desc);
+
+ gimp_channel_select_channel (channel, undo_desc, add_on,
+ 0, 0, op,
+ FALSE, 0.0, 0.0);
+
+ g_free (undo_desc);
+ g_object_unref (add_on);
+}
+
+void
+gimp_channel_select_fuzzy (GimpChannel *channel,
+ GimpDrawable *drawable,
+ gboolean sample_merged,
+ gint x,
+ gint y,
+ gfloat threshold,
+ gboolean select_transparent,
+ GimpSelectCriterion select_criterion,
+ gboolean diagonal_neighbors,
+ GimpChannelOps op,
+ gboolean antialias,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y)
+{
+ GimpPickable *pickable;
+ GeglBuffer *add_on;
+ gint add_on_x = 0;
+ gint add_on_y = 0;
+
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+ g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
+
+ if (sample_merged)
+ pickable = GIMP_PICKABLE (gimp_item_get_image (GIMP_ITEM (drawable)));
+ else
+ pickable = GIMP_PICKABLE (drawable);
+
+ add_on = gimp_pickable_contiguous_region_by_seed (pickable,
+ antialias,
+ threshold,
+ select_transparent,
+ select_criterion,
+ diagonal_neighbors,
+ x, y);
+
+ if (! sample_merged)
+ gimp_item_get_offset (GIMP_ITEM (drawable), &add_on_x, &add_on_y);
+
+ gimp_channel_select_buffer (channel, C_("undo-type", "Fuzzy Select"),
+ add_on, add_on_x, add_on_y,
+ op,
+ feather,
+ feather_radius_x,
+ feather_radius_y);
+ g_object_unref (add_on);
+}
+
+void
+gimp_channel_select_by_color (GimpChannel *channel,
+ GimpDrawable *drawable,
+ gboolean sample_merged,
+ const GimpRGB *color,
+ gfloat threshold,
+ gboolean select_transparent,
+ GimpSelectCriterion select_criterion,
+ GimpChannelOps op,
+ gboolean antialias,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y)
+{
+ GimpPickable *pickable;
+ GeglBuffer *add_on;
+ gint add_on_x = 0;
+ gint add_on_y = 0;
+
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+ g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
+ g_return_if_fail (color != NULL);
+
+ if (sample_merged)
+ pickable = GIMP_PICKABLE (gimp_item_get_image (GIMP_ITEM (drawable)));
+ else
+ pickable = GIMP_PICKABLE (drawable);
+
+ add_on = gimp_pickable_contiguous_region_by_color (pickable,
+ antialias,
+ threshold,
+ select_transparent,
+ select_criterion,
+ color);
+
+ if (! sample_merged)
+ gimp_item_get_offset (GIMP_ITEM (drawable), &add_on_x, &add_on_y);
+
+ gimp_channel_select_buffer (channel, C_("undo-type", "Select by Color"),
+ add_on, add_on_x, add_on_y,
+ op,
+ feather,
+ feather_radius_x,
+ feather_radius_y);
+ g_object_unref (add_on);
+}
+
+void
+gimp_channel_select_by_index (GimpChannel *channel,
+ GimpDrawable *drawable,
+ gint index,
+ GimpChannelOps op,
+ gboolean feather,
+ gdouble feather_radius_x,
+ gdouble feather_radius_y)
+{
+ GeglBuffer *add_on;
+ gint add_on_x = 0;
+ gint add_on_y = 0;
+
+ g_return_if_fail (GIMP_IS_CHANNEL (channel));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
+ g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
+ g_return_if_fail (gimp_drawable_is_indexed (drawable));
+
+ add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
+ gimp_item_get_width (GIMP_ITEM (drawable)),
+ gimp_item_get_height (GIMP_ITEM (drawable))),
+ babl_format ("Y float"));
+
+ gimp_gegl_index_to_mask (gimp_drawable_get_buffer (drawable), NULL,
+ gimp_drawable_get_format_without_alpha (drawable),
+ add_on, NULL,
+ index);
+
+ gimp_item_get_offset (GIMP_ITEM (drawable), &add_on_x, &add_on_y);
+
+ gimp_channel_select_buffer (channel, C_("undo-type", "Select by Indexed Color"),
+ add_on, add_on_x, add_on_y,
+ op,
+ feather,
+ feather_radius_x,
+ feather_radius_y);
+ g_object_unref (add_on);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-08 14:41:03 +0000