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#define TB_IMPL
#include "../chatty/external/termbox2.h"
#include <signal.h>
#define Assert(expr) if (!(expr)) raise(SIGTRAP)
typedef struct {
int X, Y;
} Position;
int
main(void)
{
int Selected = 0;
int NumChoices = 3;
int Y = 0;
Position Positions[NumChoices];
Positions[0] = (Position){1, Y};
Positions[1] = (Position){5, Y};
Positions[2] = (Position){9, Y};
Y += 2;
struct tb_event ev = {0};
int Color = TB_GREEN;
tb_init();
int Quit = 0;
while (!Quit)
{
tb_clear();
int BaseY = Y;
tb_printf(0, BaseY, TB_BOLD, 0, "j"); tb_printf(2, BaseY++, 0, 0, "select next");
tb_printf(0, BaseY, TB_BOLD, 0, "k"); tb_printf(2, BaseY++, 0, 0, "select previous");
tb_printf(0, BaseY, TB_BOLD, 0, "s"); tb_printf(2, BaseY++, 0, 0, "change color");
tb_printf(0, BaseY, TB_BOLD, 0, "q"); tb_printf(2, BaseY++, 0, 0, "quit");
// Draw a box at position
for (int PositionsIndex = 0; PositionsIndex < NumChoices; PositionsIndex++)
{
Assert(Positions[PositionsIndex].X > 0);
tb_printf(Positions[PositionsIndex].X - 1, Positions[PositionsIndex].Y, Color, 0, "[ ]");
}
// Draw mark in selected box
tb_printf(Positions[Selected].X, Positions[Selected].Y, Color, 0, "x");
tb_present();
tb_poll_event(&ev);
if (ev.ch == 'q') Quit = 1;
else if (ev.ch == 'j' && Selected < NumChoices - 1) Selected++;
else if (ev.ch == 'k' && Selected) Selected--;
else if (ev.ch == 's')
{
switch (Selected)
{
case 0: Color = TB_GREEN; break;
case 1: Color = TB_BLUE; break;
case 2: Color = TB_RED; break;
default: Assert(0); break;
}
}
}
tb_shutdown();
return 0;
}
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