acadia/sys/teton/framebuffer/console.cpp

29 lines
770 B
C++

#include "framebuffer/console.h"
void Console::WriteChar(char c) {
uint64_t row = cursor_pos_ / cols();
uint64_t fb_row = row * (psf_.height() + 1);
uint64_t col = cursor_pos_ % cols();
uint64_t fb_col = col * (psf_.width() + 1);
uint8_t* glyph = psf_.glyph(c);
for (uint8_t r = fb_row; r < fb_row + psf_.height(); r++) {
for (uint8_t c = fb_col; c < fb_col + psf_.width(); c++) {
uint8_t glyph_offset = psf_.width() - (c - fb_col) - 1;
if ((glyph[r] & (1 << glyph_offset))) {
framebuf_.DrawPixel(r, c, 0xFFFFFFF);
} else {
framebuf_.DrawPixel(r, c, 0);
}
}
}
cursor_pos_++;
}
void Console::WriteString(glcr::StringView str) {
for (uint64_t i = 0; i < str.size(); i++) {
WriteChar(str[i]);
}
}