45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
#include "framebuffer/console.h"
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#include <mammoth/util/debug.h>
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void Console::WriteChar(char c) {
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if (c == '\n') {
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CursorReturn();
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return;
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}
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uint64_t row = cursor_pos_ / cols();
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if (row >= rows()) {
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crash("Unimplemented console scroll.", glcr::UNIMPLEMENTED);
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}
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uint64_t fb_row = row * (psf_.height() + 1);
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uint64_t col = cursor_pos_ % cols();
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uint64_t fb_col = col * (psf_.width() + 1);
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uint8_t* glyph = psf_.glyph(c);
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for (uint32_t r = fb_row; r < fb_row + psf_.height(); r++) {
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for (uint32_t c = fb_col; c < fb_col + psf_.width(); c++) {
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uint8_t glyph_offset = psf_.width() - (c - fb_col) - 1;
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if ((glyph[r] & (1 << glyph_offset))) {
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framebuf_.DrawPixel(r, c, 0xFFFFFFF);
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} else {
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framebuf_.DrawPixel(r, c, 0);
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}
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}
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}
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cursor_pos_++;
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}
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void Console::WriteString(glcr::StringView str) {
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for (uint64_t i = 0; i < str.size(); i++) {
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WriteChar(str[i]);
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}
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}
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void Console::CursorReturn() {
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cursor_pos_ -= cursor_pos_ % cols();
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cursor_pos_ += cols();
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}
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