112 lines
2.3 KiB
C++
112 lines
2.3 KiB
C++
#include "terminal.h"
|
|
|
|
#include <kernel/kernio.h>
|
|
|
|
static const int TERMINAL_WIDTH = 80;
|
|
static const int TERMINAL_HEIGHT = 24;
|
|
|
|
static VGAChar_t* frameBuffer = (VGAChar_t*)0xB8000;
|
|
|
|
static char clearColour = 0x0;
|
|
static char bgColour = 0x0;
|
|
static char fgColour = 0xF;
|
|
|
|
Cursor cursor;
|
|
|
|
void cls() {
|
|
for (uint8_t x = 0; x < TERMINAL_WIDTH; x++)
|
|
for (uint8_t y = 0; y < TERMINAL_HEIGHT; y++)
|
|
putchar(x, y, ' ', fgColour, clearColour);
|
|
|
|
cursor.x = 0; cursor.y = 0;
|
|
updateCursor(cursor);
|
|
}
|
|
|
|
void putchar(char input) {
|
|
if (cursor.x + 1 > TERMINAL_WIDTH) {
|
|
nline();
|
|
}
|
|
if (input == '\n') {
|
|
nline();
|
|
} else {
|
|
putchar(cursor.x, cursor.y, input, fgColour, bgColour);
|
|
cursor.x++;
|
|
}
|
|
updateCursor(cursor);
|
|
}
|
|
|
|
void putchar(int x, int y, char c, char foreground, char background) {
|
|
frameBuffer[(y * TERMINAL_WIDTH) + x].c = c;
|
|
frameBuffer[(y * TERMINAL_WIDTH) + x].foreground = foreground;
|
|
frameBuffer[(y * TERMINAL_WIDTH) + x].background = background;
|
|
}
|
|
|
|
void write(char* input) {
|
|
for (uint32_t i = 0; i < strlen(input); i++) {
|
|
if (cursor.x + 1 > TERMINAL_WIDTH) {
|
|
nline();
|
|
}
|
|
if (input[i] == '\n') {
|
|
nline();
|
|
} else {
|
|
putchar(cursor.x, cursor.y, input[i], fgColour, bgColour);
|
|
cursor.x++;
|
|
}
|
|
}
|
|
updateCursor(cursor);
|
|
}
|
|
|
|
void writeln(char* input) {
|
|
write(input);
|
|
nline();
|
|
}
|
|
|
|
void nline() {
|
|
cursor.y++;
|
|
cursor.x = 0;
|
|
updateCursor(cursor);
|
|
}
|
|
|
|
void setClearColour(char col) {
|
|
clearColour = col;
|
|
}
|
|
|
|
void setFGColour(char col) {
|
|
fgColour = col;
|
|
}
|
|
|
|
void setBGColour(char col) {
|
|
bgColour = col;
|
|
}
|
|
|
|
void showCursor() {
|
|
outb(0x3D4, 0x0A);
|
|
outb(0x3D5, (inb(0x3D5) & 0xC0) | 0x0); // Cursor start top
|
|
|
|
outb(0x3D4, 0x0B);
|
|
outb(0x3D5, (inb(0x3D5) & 0xE0) | 0xF); // Cursor start bottom
|
|
}
|
|
|
|
void hideCursor() {
|
|
outb(0x3D4, 0x0A);
|
|
outb(0x3D5, 0x20);
|
|
}
|
|
|
|
void updateCursor(Cursor c) {
|
|
uint16_t pos = c.y * TERMINAL_WIDTH + c.x;
|
|
|
|
outb(0x3D4, 0x0F);
|
|
outb(0x3D5, (uint8_t) (pos & 0xFF));
|
|
outb(0x3D4, 0x0E);
|
|
outb(0x3D5, (uint8_t) ((pos >> 8) & 0xFF));
|
|
}
|
|
|
|
void setCursorPosition(int x, int y) {
|
|
cursor.x = x; cursor.y = y;
|
|
updateCursor(cursor);
|
|
}
|
|
|
|
uint8_t getVGACol(char f, char b) {
|
|
return f | b << 4;
|
|
}
|