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#include "VirtualTerminal.class.h"
#include <DisplayManager/Disp.ns.h>
#define BUFCHR(l, c) m_buff[(l * m_rows) + c]
VirtualTerminal::VirtualTerminal(u32int rows, u32int cols, u8int fgcolor, u8int bgcolor) {
m_buff = new chr[rows * cols];
m_rows = rows;
m_cols = cols;
m_mapped = false;
setColor(fgcolor, bgcolor);
clear();
m_csrcol = 0;
m_csrlin = 0;
}
void VirtualTerminal::setColor(u8int fgcolor, u8int bgcolor) {
if (bgcolor == 0xFF) {
m_color = (m_color & 0xF0) | fgcolor;
} else {
m_color = (bgcolor << 4) | fgcolor;
}
}
void VirtualTerminal::putChar(u32int row, u32int col, char c) {
chr* ch = &BUFCHR(row, col);
ch->c = c;
ch->color = m_color;
if (m_mapped)
Disp::putChar(row + m_maprow, col + m_mapcol, BUFCHR(row, col).c, m_color);
}
void VirtualTerminal::clear() {
for (u32int i = 0; i < m_rows * m_cols; i++) {
m_buff[i].c = ' ';
m_buff[i].color = m_color;
}
if (m_mapped) redraw();
}
void VirtualTerminal::map(s32int row, s32int col) {
m_maprow = (row == -1 ? (Disp::textRows() / 2) - (m_rows / 2) : row);
m_mapcol = (col == -1 ? (Disp::textCols() / 2) - (m_cols / 2) : col);
m_mapped = true;
redraw();
}
void VirtualTerminal::unmap() {
m_mapped = false;
}
void VirtualTerminal::redraw() {
if (!m_mapped) return;
for (u32int r = 0; r < m_rows; r++) {
for (u32int c = 0; c < m_cols; c++) {
Disp::putChar(r + m_maprow, c + m_mapcol, BUFCHR(r, c).c, BUFCHR(r, c).color);
}
}
}
void VirtualTerminal::scroll() {
for (u32int l = 0; l < m_rows - 1; l++) {
for (u32int c = 0; c < m_cols; c++) {
BUFCHR(l, c) = BUFCHR(l + 1, c);
}
}
for (u32int c = 0; c < m_cols; c++) {
BUFCHR(m_rows - 1, c).c = ' ';
BUFCHR(m_rows - 1, c).color = m_color;
}
}
void VirtualTerminal::updateCursor() {
Disp::moveCursor(m_csrlin + m_maprow, m_csrcol + m_mapcol);
}
void VirtualTerminal::moveCursor(u32int row, u32int col) {
m_csrlin = row;
m_csrcol = col;
updateCursor();
}
void VirtualTerminal::setCursorLine(u32int line) {
m_csrlin = line;
updateCursor();
}
void VirtualTerminal::setCursorCol(u32int col) {
m_csrcol = col;
updateCursor();
}
// Display functionn
void VirtualTerminal::put(char c, bool updatecsr) {
if (c == 0x08) { //Ascii backspace
if (m_csrcol > 0) m_csrcol--;
putChar(m_csrlin, m_csrcol, ' ');
} else if (c == 0x09) { //Ascii tab
m_csrcol = (m_csrcol + 8) &~(8 - 1);
} else if (c == '\r') {
m_csrcol = 0;
} else if (c == '\n') {
m_csrcol = 0;
m_csrlin++;
} else if (c >= ' ') { //Printable character
putChar(m_csrlin, m_csrcol, c);
m_csrcol++;
}
if (m_csrcol >= m_cols) {
m_csrcol = 0;
m_csrlin++;
}
if (m_csrlin >= m_rows) {
scroll();
m_csrlin--;
}
if (updatecsr) updateCursor();
}
void VirtualTerminal::write(char* c, bool updatecsr) {
while (*c) {
put(*(c++), false);
}
if (updatecsr) updateCursor();
}
void VirtualTerminal::writeDec(s32int i, bool updatecsr) {
if (i == 0) {
put('0', false);
} else if (i < 0) {
put('-', false);
i = 0 - i;
}
char c[32];
int n = 0;
while (i > 0) {
c[n] = '0' + (i % 10);
i /= 10;
n++;
}
while (n > 0) {
n--;
put(c[n], false);
}
if (updatecsr) updateCursor();
}
void VirtualTerminal::writeHex(u32int i, bool updatecsr) {
write("0x", false);
char hexdigits[] = "0123456789ABCDEF";
for (u32int j = 0; j < 8; j++) {
put(hexdigits[(i & 0xF0000000) >> 28], false);
i = i << 4;
}
if (updatecsr) updateCursor();
}
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