term.h

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#ifndef __TERMINAL_H__
#define __TERMINAL_H__
 
#include <stdint.h>
 
#define TERMINAL_MAX_COLS 256
#define TERMINAL_MAX_ROWS 128
 
#define TERMINAL_HISTORY_MAX 100
 
#define TERMINAL_SCROLLBACK_MAX 1000
 
/* Cell flag bits. 0x1 marks a cell TerminalFlush should repaint, 0x2 is the
 * blinking cursor block, and 0x4 is a selected cell. Selection is a flag
 * rather than swapped colours because new output can land under a live
 * highlight, and swapping in place would corrupt the cell's real colours. */
#define TERMINAL_CELL_SELECTED 0x4
 
typedef struct _cell_ {
    uint8_t c;
    uint32_t bg;
    uint32_t fg;
    uint8_t flags;
} TermCell;
 
typedef struct _term_history_ {
    char entries[TERMINAL_HISTORY_MAX][256];
    int count;
    int head;
    int browse;
} TerminalHistory;
 
typedef struct {
    TermCell cells[TERMINAL_MAX_ROWS][TERMINAL_MAX_COLS];
    int cols, rows;
    int cursorX, cursorY;
    int lastCursorX, lastCursorY;
    int inputStartX, inputStartY;
    int savedCursorX, savedCursorY;
    int cellW, cellH;
    int baseine;
    int originX, originY;
    uint32_t defaultFg;
    uint32_t defaultBG;
    int scrollTop;
    int scrollBot;
    TerminalHistory history;
    char inputBuffer[256];
    char inputSaved[256];
    int intputLen;
    int lastCellXClicked;
    int lastCellYClicked;
    /* Mouse selection. lastCellXClicked/YClicked doubles as the anchor,
     * selEndX/Y is the corner being dragged to, and selPaintX0..Y1 is the
     * rectangle currently highlighted so shrinking a selection repaints
     * only the rows it is leaving. */
    int selEndX;
    int selEndY;
    bool selActive;
    int lastButtonState;
    int selPaintX0;
    int selPaintY0;
    int selPaintX1;
    int selPaintY1;
    volatile bool blink_visible;
    bool scrolling;
    bool cursor_hide;
    TermCell* sb;
    int sbHead;
    int sbCount;
    int viewOffset;
} Terminal;
 
#endif