146 lines
3.9 KiB
C++
146 lines
3.9 KiB
C++
#ifndef display_buffer_hh_INCLUDED
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#define display_buffer_hh_INCLUDED
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#include <vector>
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#include "string.hh"
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#include "line_and_column.hh"
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#include "buffer.hh"
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namespace Kakoune
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{
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struct DisplayCoord : LineAndColumn<DisplayCoord>
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{
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DisplayCoord(int line = 0, int column = 0)
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: LineAndColumn(line, column) {}
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template<typename T>
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explicit DisplayCoord(const LineAndColumn<T>& other)
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: LineAndColumn(other.line, other.column) {}
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};
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typedef int Attribute;
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enum Attributes
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{
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Normal = 0,
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Underline = 1,
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Reverse = 2,
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Blink = 4,
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Bold = 8,
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Final = 16
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};
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enum class Color
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{
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Default,
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Black,
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Red,
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Green,
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Yellow,
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Blue,
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Magenta,
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Cyan,
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White
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};
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// A DisplayAtom is a string of text with it's display style.
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//
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// The DisplayAtom class references the buffer string it represents
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// with it's begin/end iterators and may replace it with another
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// text stored in the replacement_string field.
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struct DisplayAtom
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{
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const DisplayCoord& coord() const { return m_coord; }
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const BufferIterator& begin() const { return m_begin; }
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const BufferIterator& end() const { return m_end; }
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const Color& fg_color() const { return m_fg_color; }
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const Color& bg_color() const { return m_bg_color; }
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const Attribute& attribute() const { return m_attribute; }
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enum ContentMode
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{
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BufferText,
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ReplacementText
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};
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ContentMode content_mode() const { return m_content_mode; }
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Color& fg_color() { return m_fg_color; }
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Color& bg_color() { return m_bg_color; }
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Attribute& attribute() { return m_attribute; }
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String content() const;
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DisplayCoord end_coord() const;
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BufferIterator iterator_at(const DisplayCoord& coord) const;
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DisplayCoord line_and_column_at(const BufferIterator& iterator) const;
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bool splitable() const { return m_content_mode != ReplacementText; }
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private:
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friend class DisplayBuffer;
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DisplayAtom(DisplayCoord coord,
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BufferIterator begin, BufferIterator end,
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Color fg_color = Color::Default,
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Color bg_color = Color::Default,
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Attribute attribute = Attributes::Normal)
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: m_content_mode(BufferText),
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m_coord(std::move(coord)),
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m_begin(std::move(begin)), m_end(std::move(end)),
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m_fg_color(fg_color),
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m_bg_color(bg_color),
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m_attribute(attribute)
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{}
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ContentMode m_content_mode;
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DisplayCoord m_coord;
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BufferIterator m_begin;
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BufferIterator m_end;
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Color m_fg_color;
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Color m_bg_color;
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Attribute m_attribute;
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String m_replacement_text;
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};
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// A DisplayBuffer is the visual content of a Window as a DisplayAtom list
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//
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// The DisplayBuffer class provides means to mutate and iterator on it's
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// DisplayAtoms.
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class DisplayBuffer
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{
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public:
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typedef std::list<DisplayAtom> AtomList;
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typedef AtomList::iterator iterator;
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typedef AtomList::const_iterator const_iterator;
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DisplayBuffer();
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void clear() { m_atoms.clear(); }
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iterator append(BufferIterator begin, BufferIterator end);
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iterator insert_empty_atom_before(iterator where);
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iterator split(iterator atom, const BufferIterator& pos);
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void replace_atom_content(iterator atom, const String& replacement);
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iterator begin() { return m_atoms.begin(); }
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iterator end() { return m_atoms.end(); }
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const_iterator begin() const { return m_atoms.begin(); }
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const_iterator end() const { return m_atoms.end(); }
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iterator atom_containing(const BufferIterator& where);
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iterator atom_containing(const BufferIterator& where, iterator start);
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const DisplayAtom& front() const { return m_atoms.front(); }
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const DisplayAtom& back() const { return m_atoms.back(); }
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void check_invariant() const;
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private:
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AtomList m_atoms;
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};
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}
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#endif // display_buffer_hh_INCLUDED
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