97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
#define MODULE "text"
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#include "render/TextRenderer.h"
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#include "bootboot.h"
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#include "font.h"
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#include "init/InitRD.h"
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#include "io/Serial.h"
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#include "log/Log.h"
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#include "render/Framebuffer.h"
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#include "std/stdio.h"
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#include "std/string.h"
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extern BOOTBOOT bootboot;
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static Color bgColor = Color::Black;
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static Color fgColor = Color::White;
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static uint32_t xpos = 0;
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static uint32_t ypos = 0;
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#define FONT_HEIGHT 16
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#define FONT_WIDTH 8
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void TextRenderer::reset()
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{
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xpos = 0;
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ypos = 0;
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}
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#pragma GCC push_options
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#pragma GCC optimize("O0")
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static void putchar_at_offset(char c, [[maybe_unused]] uint32_t cx, [[maybe_unused]] uint32_t cy,
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[[maybe_unused]] Color& fg, [[maybe_unused]] Color& bg)
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{
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uint8_t* glyph = &font[c * 16];
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for (uint32_t y = 0; y < FONT_HEIGHT; y++)
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{
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for (uint32_t x = 0; x < FONT_WIDTH; x++)
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{
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volatile uint8_t mask = *glyph;
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if ((mask & (0b10000000 >> x)) > 0) { framebuffer0.set_pixel(cx + x, cy + y, Color::White); }
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else { framebuffer0.set_pixel(cx + x, cy + y, Color::Black); }
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}
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glyph++;
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}
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}
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#pragma GCC pop_options
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void TextRenderer::putchar(char chr)
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{
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switch (chr)
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{
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case '\n': {
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ypos += FONT_HEIGHT;
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if ((ypos + FONT_HEIGHT) >= bootboot.fb_height)
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{
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memcpy((void*)bootboot.fb_ptr, (char*)bootboot.fb_ptr + (bootboot.fb_scanline * FONT_HEIGHT),
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bootboot.fb_size - (bootboot.fb_scanline * FONT_HEIGHT));
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ypos -= FONT_HEIGHT;
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framebuffer0.paint_rect(0, ypos, bootboot.fb_width, FONT_HEIGHT, Color::Black);
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}
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xpos = 0;
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break;
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}
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case '\r': xpos = 0; break;
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case '\b':
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if (xpos != 0)
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{
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xpos -= FONT_WIDTH;
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framebuffer0.paint_rect(xpos, ypos, FONT_WIDTH, FONT_HEIGHT, Color::Black);
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}
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break;
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default: {
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putchar_at_offset(chr, xpos, ypos, fgColor, bgColor);
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xpos += FONT_WIDTH;
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if ((xpos + FONT_WIDTH) > bootboot.fb_width)
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{
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xpos = 0;
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ypos += FONT_HEIGHT;
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if (ypos > bootboot.fb_height)
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{
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memcpy((void*)bootboot.fb_ptr, (char*)bootboot.fb_ptr + (bootboot.fb_scanline * FONT_HEIGHT),
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bootboot.fb_size - (bootboot.fb_scanline * FONT_HEIGHT));
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ypos -= FONT_HEIGHT;
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framebuffer0.paint_rect(0, ypos, bootboot.fb_width, FONT_HEIGHT, Color::Black);
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}
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}
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break;
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}
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}
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}
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void TextRenderer::write(const char* str, size_t size)
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{
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for (size_t i = 0; i < size; i++) { putchar(str[i]); }
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} |