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#include "ScrollableVT.class.h"
#include <VTManager/VT.ns.h>
#include <DeviceManager/Disp.ns.h>
#define BUFCHR(l, c) m_buff[((l) * m_cols) + (c)]
ScrollableVT::ScrollableVT(u32int rows, u32int cols, u32int keepRows, u8int fgcolor, u8int bgcolor) :
SimpleVT(rows, cols, fgcolor, bgcolor) {
m_keeprows = keepRows;
m_linesup = 0;
m_lines = new vtchr* [keepRows];
for (u32int i = 0; i < keepRows; i++) {
m_lines[i] = new vtchr [cols];
for (u32int j = 0; j < cols; j++) {
m_lines[i][j].color = m_color;
m_lines[i][j].c = " ";
}
}
}
ScrollableVT::~ScrollableVT() {
for (u32int i = 0; i < m_keeprows; i++) {
delete m_lines[i];
}
delete m_lines;
}
void ScrollableVT::putChar(u32int row, u32int col, WChar c) {
if (row >= m_rows or col >= m_cols) return;
vtchr* ch = &BUFCHR(row, col);
ch->c = c;
ch->color = m_color;
if (m_mapped) {
if (row + m_linesup < m_rows)
Disp::putChar(row + m_maprow + m_linesup, col + m_mapcol, BUFCHR(row, col).c, m_color);
}
}
void ScrollableVT::updateCursor() {
if (m_csrlin + m_linesup < m_rows)
Disp::moveCursor(m_csrlin + m_maprow + m_linesup, m_csrcol + m_mapcol);
}
void ScrollableVT::redraw() {
if (!m_mapped) return;
for (u32int r = 0; r < m_rows; r++) {
if (r >= m_linesup) {
for (u32int c = 0; c < m_cols; c++) {
Disp::putChar(r + m_maprow, c + m_mapcol, BUFCHR(r - m_linesup, c).c, BUFCHR(r - m_linesup, c).color);
}
} else {
for (u32int c = 0; c < m_cols; c++) {
register u32int l = m_keeprows - m_linesup + r;
Disp::putChar(r + m_maprow, c + m_mapcol, m_lines[l][c].c, m_lines[l][c].color);
}
}
}
}
void ScrollableVT::scroll() {
for (u32int c = 0; c < m_cols; c++) {
m_lines[0][c] = BUFCHR(0, c);
}
vtchr* x = m_lines[0];
for (u32int l = 1; l < m_keeprows; l++) {
m_lines[l - 1] = m_lines[l];
}
m_lines[m_keeprows - 1] = x;
SimpleVT::scroll();
}
void ScrollableVT::keyPress(keypress_t kp) {
if (kp.hascmd && kp.modifiers == STATUS_SHIFT) {
s32int nlup = m_linesup;
if (kp.command == KBDC_PGUP) {
nlup = m_linesup + (m_rows - 2);
} else if (kp.command == KBDC_PGDOWN) {
nlup = m_linesup - (m_rows - 2);
} else if (kp.command == KBDC_UP) {
nlup = m_linesup + 1;
} else if (kp.command == KBDC_DOWN) {
nlup = m_linesup - 1;
} else {
VirtualTerminal::keyPress(kp);
}
if (nlup < 0) nlup = 0;
m_linesup = nlup;
if (m_linesup > m_keeprows) m_linesup = m_keeprows;
redraw();
updateCursor();
} else {
VirtualTerminal::keyPress(kp);
}
}
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