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-rw-r--r--src/object/sp-text.h152
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diff --git a/src/object/sp-text.h b/src/object/sp-text.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_TEXT_H
+#define SEEN_SP_TEXT_H
+
+/*
+ * SVG <text> and <tspan> implementation
+ *
+ * Author:
+ * Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstddef>
+#include <sigc++/sigc++.h>
+
+#include "desktop.h"
+#include "sp-item.h"
+#include "sp-string.h" // Provides many other headers with SP_IS_STRING
+#include "text-tag-attributes.h"
+
+#include "libnrtype/Layout-TNG.h"
+
+#include "xml/node-event-vector.h"
+
+#include <memory>
+
+/* Text specific flags */
+#define SP_TEXT_CONTENT_MODIFIED_FLAG SP_OBJECT_USER_MODIFIED_FLAG_A
+#define SP_TEXT_LAYOUT_MODIFIED_FLAG SP_OBJECT_USER_MODIFIED_FLAG_A
+
+class SPShape;
+
+/* SPText */
+class SPText : public SPItem {
+public:
+ SPText();
+ ~SPText() override;
+
+ /** Converts the text object to its component curves */
+ std::unique_ptr<SPCurve> getNormalizedBpath() const;
+
+ /** Completely recalculates the layout. */
+ void rebuildLayout();
+
+ //semiprivate: (need to be accessed by the C-style functions still)
+ TextTagAttributes attributes;
+ Inkscape::Text::Layout layout;
+
+ /** when the object is transformed it's nicer to change the font size
+ and coordinates when we can, rather than just applying a matrix
+ transform. is_root is used to indicate to the function that it should
+ extend zero-length position vectors to length 1 in order to record the
+ new position. This is necessary to convert from objects whose position is
+ completely specified by transformations. */
+ static void _adjustCoordsRecursive(SPItem *item, Geom::Affine const &m, double ex, bool is_root = true);
+ static void _adjustFontsizeRecursive(SPItem *item, double ex, bool is_root = true);
+ /**
+ This two functions are useful because layout calculations need text visible for example
+ Calculating a invisible char position object or pasting text with paragraphs that overflow
+ shape defined. I have doubts about transform into a toggle function*/
+ void show_shape_inside();
+ void hide_shape_inside();
+
+ /** discards the drawing objects representing this text. */
+ void _clearFlow(Inkscape::DrawingGroup *in_arena);
+
+ bool _optimizeTextpathText = false;
+
+ /** Union all exclusion shapes. */
+ Shape* getExclusionShape() const;
+ /** Add a single inclusion shape with padding */
+ Shape* getInclusionShape(SPShape *shape, bool padding = false) const;
+
+ std::optional<Geom::Point> getBaselinePoint() const;
+
+private:
+
+ /** Initializes layout from <text> (i.e. this node). */
+ void _buildLayoutInit();
+
+ /** Recursively walks the xml tree adding tags and their contents. The
+ non-trivial code does two things: firstly, it manages the positioning
+ attributes and their inheritance rules, and secondly it keeps track of line
+ breaks and makes sure both that they are assigned the correct SPObject and
+ that we don't get a spurious extra one at the end of the flow. */
+ unsigned _buildLayoutInput(SPObject *object, Inkscape::Text::Layout::OptionalTextTagAttrs const &parent_optional_attrs, unsigned parent_attrs_offset, bool in_textpath);
+
+ /** Find first x/y values which may be in a descendent element. */
+ SVGLength* _getFirstXLength();
+ SVGLength* _getFirstYLength();
+ SPCSSAttr *css;
+
+ public:
+ /** Optimize textpath text on next set_transform. */
+ void optimizeTextpathText() {_optimizeTextpathText = true;}
+
+ void build(SPDocument* doc, Inkscape::XML::Node* repr) override;
+ void release() override;
+ void child_added(Inkscape::XML::Node* child, Inkscape::XML::Node* ref) override;
+ void remove_child(Inkscape::XML::Node* child) override;
+ void set(SPAttr key, const char* value) override;
+ void update(SPCtx* ctx, unsigned int flags) override;
+ void modified(unsigned int flags) override;
+ Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, unsigned int flags) override;
+
+ Geom::OptRect bbox(Geom::Affine const &transform, SPItem::BBoxType type) const override;
+ void print(SPPrintContext *ctx) override;
+ const char* typeName() const override;
+ const char* displayName() const override;
+ char* description() const override;
+ Inkscape::DrawingItem* show(Inkscape::Drawing &drawing, unsigned int key, unsigned int flags) override;
+ void hide(unsigned int key) override;
+ void snappoints(std::vector<Inkscape::SnapCandidatePoint> &p, Inkscape::SnapPreferences const *snapprefs) const override;
+ Geom::Affine set_transform(Geom::Affine const &transform) override;
+
+ // For 'inline-size', need to also remove any 'x' and 'y' added by SVG 1.1 fallback.
+ void remove_svg11_fallback();
+
+ void newline_to_sodipodi(); // 'inline-size' to Inkscape multi-line text.
+ void sodipodi_to_newline(); // Inkscape mult-line text to SVG 2 text.
+
+ bool is_horizontal() const;
+ bool has_inline_size() const;
+ bool has_shape_inside() const;
+ Geom::OptRect get_frame(); // Gets inline-size or shape-inside frame.
+ Inkscape::XML::Node* get_first_rectangle(); // Gets first shape-inside rectangle (if it exists).
+ SPItem *get_first_shape_dependency();
+ void remove_newlines(); // Removes newlines in text.
+};
+
+SPItem *create_text_with_inline_size (SPDesktop *desktop, Geom::Point p0, Geom::Point p1);
+SPItem *create_text_with_rectangle (SPDesktop *desktop, Geom::Point p0, Geom::Point p1);
+
+MAKE_SP_OBJECT_DOWNCAST_FUNCTIONS(SP_TEXT, SPText)
+MAKE_SP_OBJECT_TYPECHECK_FUNCTIONS(SP_IS_TEXT, SPText)
+
+#endif
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :