1 files changed, 152 insertions, 0 deletions
diff --git a/src/object/sp-text.h b/src/object/sp-text.h
new file mode 100644
index 0000000..77c2b8f
--- /dev/null
+++ b/src/object/sp-text.h
@@ -0,0 +1,152 @@
+// 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 :