screen.h

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#pragma once
 
#include <cstdint>
#include <promeki/namespace.h>
#include <promeki/list.h>
#include <promeki/char.h>
#include <promeki/terminal.h>
#include <promeki/tui/style.h>
#include <promeki/ansistream.h>
 
PROMEKI_NAMESPACE_BEGIN
 
struct TuiCell {
                Char     ch = Char(U' ');                              
                TuiStyle style = TuiStyle(Color::White, Color::Black); 
 
                bool operator==(const TuiCell &other) const { return ch == other.ch && style == other.style; }
                bool operator!=(const TuiCell &other) const { return !(*this == other); }
};
 
class TuiScreen {
        public:
                TuiScreen();
 
                ~TuiScreen();
 
                void resize(int cols, int rows);
 
                int cols() const { return _cols; }
 
                int rows() const { return _rows; }
 
                void setCell(int x, int y, const TuiCell &cell);
 
                TuiCell cell(int x, int y) const;
 
                void clear(const Color &fg = Color::White, const Color &bg = Color::Black);
 
                void flush(AnsiStream &stream);
 
                void invalidate();
 
                void setColorMode(Terminal::ColorSupport mode) { _colorMode = mode; }
 
                Terminal::ColorSupport colorMode() const { return _colorMode; }
 
        private:
                int                    _cols = 0;
                int                    _rows = 0;
                List<TuiCell>          _front;
                List<TuiCell>          _back;
                bool                   _fullRedraw = true;
                Terminal::ColorSupport _colorMode = Terminal::TrueColor;
 
                int  index(int x, int y) const { return y * _cols + x; }
                bool inBounds(int x, int y) const { return x >= 0 && x < _cols && y >= 0 && y < _rows; }
 
                void emitCell(AnsiStream &stream, const TuiCell &cell, int &cursorX, int &cursorY, int x, int y,
                              Color &lastFg, Color &lastBg, uint8_t &lastStyle);
};
 
PROMEKI_NAMESPACE_END