120 lines
2.3 KiB
C++
120 lines
2.3 KiB
C++
#include "terminal.h"
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#include <kernel/kernio.h>
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#include <lib/std/string.h>
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static VGAChar_t* frameBuffer = (VGAChar_t*)0xB8000;
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static char clearColour = 0x0;
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static char bgColour = 0x0;
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static char fgColour = 0xF;
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Cursor cursor;
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void Cls() {
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for (uint8_t x = 0; x < TERMINAL_WIDTH; x++)
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for (uint8_t y = 0; y < TERMINAL_HEIGHT; y++)
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Puts(x, y, ' ', fgColour, clearColour);
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cursor.x = 0; cursor.y = 0;
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UpdateCursor(cursor);
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}
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void Puts(char input) {
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if (cursor.x + 1 > TERMINAL_WIDTH) {
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Nline();
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}
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if (input == '\n') {
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Nline();
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} else {
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Puts(cursor.x, cursor.y, input, fgColour, bgColour);
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cursor.x++;
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}
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UpdateCursor(cursor);
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}
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void Puts(int x, int y, char c, char foreground, char background) {
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frameBuffer[(y * TERMINAL_WIDTH) + x].c = c;
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frameBuffer[(y * TERMINAL_WIDTH) + x].foreground = foreground;
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frameBuffer[(y * TERMINAL_WIDTH) + x].background = background;
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}
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void Nline() {
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cursor.y++;
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cursor.x = 0;
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UpdateCursor(cursor);
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}
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void Write(char* input) {
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for (uint32_t i = 0; i < strlen(input); i++) {
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if (cursor.x + 1 > TERMINAL_WIDTH) {
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Nline();
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}
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if (input[i] == '\n') {
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Nline();
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}
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else {
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Puts(cursor.x, cursor.y, input[i], fgColour, bgColour);
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cursor.x++;
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}
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}
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UpdateCursor(cursor);
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}
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void Writeln(char* input) {
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Write(input);
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Nline();
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}
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void SetClearColour(char col) {
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clearColour = col;
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}
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void SetFGColour(char col) {
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fgColour = col;
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}
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void SetBGColour(char col) {
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bgColour = col;
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}
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void ResetTermColours() {
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bgColour = 0x0;
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fgColour = 0xF;
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}
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void ShowCursor() {
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outb(0x3D4, 0x0A);
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outb(0x3D5, (inb(0x3D5) & 0xC0) | 0x0); // Cursor start top
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outb(0x3D4, 0x0B);
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outb(0x3D5, (inb(0x3D5) & 0xE0) | 0xF); // Cursor start bottom
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}
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void HideCursor() {
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outb(0x3D4, 0x0A);
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outb(0x3D5, 0x20);
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}
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void UpdateCursor(Cursor c) {
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uint16_t pos = c.y * TERMINAL_WIDTH + c.x;
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outb(0x3D4, 0x0F);
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outb(0x3D5, (uint8_t) (pos & 0xFF));
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outb(0x3D4, 0x0E);
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outb(0x3D5, (uint8_t) ((pos >> 8) & 0xFF));
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}
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void SetCursorPosition(int x, int y) {
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cursor.x = x; cursor.y = y;
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UpdateCursor(cursor);
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}
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Cursor GetCursorPosition() {
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return cursor;
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}
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uint8_t getVGACol(char f, char b) {
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return f | b << 4;
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}
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