66 lines
No EOL
2.1 KiB
C++
66 lines
No EOL
2.1 KiB
C++
#include "psftext.hpp"
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#include "core/paging.hpp"
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#include "libs/string.hpp"
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#include "drivers/framebuffer.hpp"
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PSF_STATUS psf_status;
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void psftext_init(void* psf_addr){
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printk("Loading PSF font... ");
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memcpy(psf_addr, &psf_status.header, sizeof(PSF_HEADER));
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if(psf_status.header.magic!=PSF_MAGIC){
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printk("Invalid PSF magic number. Abort.\n");
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return;
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}
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printk("Flags %d Version %d Glyphs number %d Size %dx%d",
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psf_status.header.flags, psf_status.header.version,
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psf_status.header.glyph_count, psf_status.header.glyph_width, psf_status.header.glyph_height);
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psf_status.x=0;
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psf_status.y=0;
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psf_status.psf_addr=(u8*)psf_addr;
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psf_status.nline=fb_cfg.height/psf_status.header.glyph_height;
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psf_status.nchar=fb_cfg.width/psf_status.header.glyph_width;
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psf_status.bg=0;
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psf_status.fg=200;
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print("\n");
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}
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void psftext_putchar(char c){
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if(c=='\n'){
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psf_status.y++;
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psf_status.x=0;
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if(psf_status.y>psf_status.nline)
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framebuffer_scrollup(psf_status.header.glyph_height);
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return;
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}
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u8* glyph=(psf_status.psf_addr+psf_status.header.header_length+c*psf_status.header.glyph_size);
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FB_PIXEL pixel;
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for(int i=0;i<psf_status.header.glyph_height;i++){
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for(int k=0;k<(psf_status.header.glyph_width/8);k++){
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u8 mask=1<<7;
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u8 row=*(glyph+k);
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for(int j=0;j<8;j++){
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u16 status=row&mask;
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u8 color=status ? psf_status.fg:psf_status.bg;
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pixel.x=j+k*8+psf_status.x*psf_status.header.glyph_width;
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pixel.y=i+psf_status.y*psf_status.header.glyph_height;
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pixel.r=color;
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pixel.g=color;
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pixel.b=color;
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pixel.a=color;
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framebuffer_draw(pixel);
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mask>>=1;
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}
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}
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glyph+=psf_status.header.glyph_width/8;
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}
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psf_status.x++;
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if(psf_status.x>psf_status.nchar){
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psf_status.y++;
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psf_status.x=0;
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if(psf_status.y>psf_status.nline)
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framebuffer_scrollup(psf_status.header.glyph_height);
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}
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} |