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diff --git a/src/text-editing.h b/src/text-editing.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_TEXT_EDITING_H
+#define SEEN_SP_TEXT_EDITING_H
+
+/*
+ * Text editing functions common for for text and flowtext
+ *
+ * Authors:
+ * bulia byak
+ * Richard Hughes
+ *
+ * Copyright (C) 2004-5 authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <utility> // std::pair
+#include "libnrtype/Layout-TNG.h"
+#include "text-tag-attributes.h"
+
+class SPCSSAttr;
+class SPDesktop;
+class SPItem;
+class SPObject;
+class SPStyle;
+
+typedef std::pair<Inkscape::Text::Layout::iterator, Inkscape::Text::Layout::iterator> iterator_pair;
+
+
+Inkscape::Text::Layout const * te_get_layout (SPItem const *item);
+
+void te_update_layout_now_recursive(SPItem *item);
+
+/** Returns true if there are no visible characters on the canvas. */
+bool sp_te_output_is_empty(SPItem const *item);
+
+/** Returns true if the user has typed nothing in the text box. */
+bool sp_te_input_is_empty(SPObject const *item);
+
+/** Recursively gets the length of all the SPStrings at or below the given
+\a item. Also adds 1 for each line break encountered. */
+unsigned sp_text_get_length(SPObject const *item);
+
+/** Recursively gets the length of all the SPStrings at or below the given
+\a item, before and not including \a upto. Also adds 1 for each line break encountered. */
+unsigned sp_text_get_length_upto(SPObject const *item, SPObject const *upto);
+
+std::vector<Geom::Point> sp_te_create_selection_quads(SPItem const *item, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, Geom::Affine const &transform);
+
+Inkscape::Text::Layout::iterator sp_te_get_position_by_coords (SPItem const *item, Geom::Point const &i_p);
+void sp_te_get_cursor_coords (SPItem const *item, Inkscape::Text::Layout::iterator const &position, Geom::Point &p0, Geom::Point &p1);
+double sp_te_get_average_linespacing (SPItem *text);
+
+SPStyle const * sp_te_style_at_position(SPItem const *text, Inkscape::Text::Layout::iterator const &position);
+SPObject const * sp_te_object_at_position(SPItem const *text, Inkscape::Text::Layout::iterator const &position);
+
+Inkscape::Text::Layout::iterator sp_te_insert(SPItem *item, Inkscape::Text::Layout::iterator const &position, char const *utf8);
+Inkscape::Text::Layout::iterator sp_te_replace(SPItem *item, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, char const *utf8);
+Inkscape::Text::Layout::iterator sp_te_insert_line (SPItem *text, Inkscape::Text::Layout::iterator &position);
+bool sp_te_delete (SPItem *item, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, iterator_pair &iter_pair);
+
+Glib::ustring sp_te_get_string_multiline(SPItem const *text);
+Glib::ustring sp_te_get_string_multiline(SPItem const *text, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end);
+void sp_te_set_repr_text_multiline(SPItem *text, char const *str);
+
+TextTagAttributes*
+text_tag_attributes_at_position(SPItem *item, Inkscape::Text::Layout::iterator const &position, unsigned *char_index);
+
+void sp_te_adjust_kerning_screen(SPItem *text, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, SPDesktop *desktop, Geom::Point by);
+void sp_te_adjust_dx (SPItem *item, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, SPDesktop *desktop, double delta);
+void sp_te_adjust_dy (SPItem *item, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, SPDesktop *desktop, double delta);
+
+void sp_te_adjust_rotation_screen(SPItem *text, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, SPDesktop *desktop, double pixels);
+void sp_te_adjust_rotation(SPItem *text, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, SPDesktop *desktop, double degrees);
+void sp_te_set_rotation(SPItem *text, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, SPDesktop *desktop, double degrees);
+
+void sp_te_adjust_tspan_letterspacing_screen(SPItem *text, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, SPDesktop *desktop, double by);
+void sp_te_adjust_linespacing_screen(SPItem *text, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, SPDesktop *desktop, double by);
+void sp_te_apply_style(SPItem *text, Inkscape::Text::Layout::iterator const &start, Inkscape::Text::Layout::iterator const &end, SPCSSAttr const *css);
+
+bool is_part_of_text_subtree (SPObject const *obj);
+bool is_top_level_text_object (SPObject const *obj);
+bool has_visible_text (SPObject const *obj);
+
+#endif // SEEN_SP_TEXT_EDITING_H