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 is<SPString>
#include "text-tag-attributes.h"
#include "display/curve.h"
 
#include "libnrtype/Layout-TNG.h"
#include "libnrtype/style-attachments.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 final : public SPItem {
public:
    SPText();
    ~SPText() override;
    int tag() const override { return tag_of<decltype(*this)>; }
 
    SPCurve getNormalizedBpath() const;
 
    void rebuildLayout();
 
    //semiprivate:  (need to be accessed by the C-style functions still)
    TextTagAttributes attributes;
    Inkscape::Text::Layout layout;
    std::unordered_map<unsigned, Inkscape::Text::StyleAttachments> view_style_attachments;
 
    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);
    void show_shape_inside();
    void hide_shape_inside();
 
    void _clearFlow(Inkscape::DrawingGroup *in_arena);
 
    bool _optimizeTextpathText = false;
 
    std::unique_ptr<Shape> getExclusionShape() const;
    std::unique_ptr<Shape> getInclusionShape(SPShape *shape) const;
    std::vector<std::unique_ptr<Shape>> makeEffectiveShapes() const;
 
    std::optional<Geom::Point> getBaselinePoint() const;
 
private:
 
    void _buildLayoutInit();
 
    unsigned _buildLayoutInput(SPObject *object, Inkscape::Text::Layout::OptionalTextTagAttrs const &parent_optional_attrs, unsigned parent_attrs_offset, bool in_textpath);
 
    SVGLength* _getFirstXLength();
    SVGLength* _getFirstYLength();
    SPCSSAttr *css;
 
  public:
    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;
    void getLinked(std::vector<SPObject *> &objects, LinkedObjectNature direction = LinkedObjectNature::ANY) const 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();
    const std::vector<SPItem *> get_all_shape_dependencies() const;
    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);
 
#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 :