95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
#include <stdint.h>
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#include "framebuffer.h"
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#include "serial.h"
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#include "../kernel/system.h"
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//extern uint32_t *g_framebuffer;
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void putpixel(uint32_t* fb, int pitch, int bpp, int x, int y, uint32_t color) // framebuffer pointer, x, y, color
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{
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if (bpp == 32) {
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uint32_t* pixel_addr = (uint32_t*)((uint8_t*)fb + y * pitch + x *(bpp / 8));
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*pixel_addr = color;
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}
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}
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extern char* framebuffer;
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extern int scanline;
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extern char _binary_include_fonts_UniCyr_8x16_psf_start;
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uint16_t* unicode;
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#define PIXEL uint32_t
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// Character, cursor X, cursor Y, foreground, background
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void draw_char(unsigned short int c, int cx, int cy, uint32_t fg, uint32_t bg)
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{
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PSF_font *font = (PSF_font*)&_binary_include_fonts_UniCyr_8x16_psf_start;
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int bytesperline=(font->width+7)/8;
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if (unicode != NULL) {
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c = unicode[c];
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}
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unsigned char* glyph = (unsigned char*)&_binary_include_fonts_UniCyr_8x16_psf_start + font->headersize + (c>0&&c<font->numglyph?c:0)*font->bytesperglyph;
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int offs =
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(cy * font->height * scanline) +
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(cx * (font->width) * sizeof(PIXEL));
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unsigned int x, y;
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int line, mask;
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for (y=0; y<font->height; y++)
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{
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line=offs;
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mask=1<<(font->width-1);
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for (x=0; x<font->width; x++)
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{
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*((PIXEL*)(framebuffer + line)) = *((unsigned int*)glyph) & mask ? fg : bg;
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mask >>= 1;
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line += sizeof(PIXEL);
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}
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glyph += bytesperline;
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offs += scanline;
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}
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}
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void scroll()
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{
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serial_printf(3, "Scrolling...\r");
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uint32_t bg_color = 0x00000000;
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PSF_font *font = (PSF_font*)&_binary_include_fonts_UniCyr_8x16_psf_start;
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int line_size = font->height * scanline;
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int framebuffer_size = scanline * font->height * (1080/font->height);
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// Erasing first line
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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<scanline/sizeof(PIXEL); x++)
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{
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*((PIXEL*)(framebuffer + y * scanline + x * sizeof(PIXEL))) = bg_color;
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}
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}
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// Moving all lines up by 1 line
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for (int y=1; y<(framebuffer_size/line_size); y++)
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{
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void* src = framebuffer + y*line_size;
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void* dst = framebuffer + (y-1)*line_size;
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memmove(dst, src, line_size);
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}
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// Erasing last line
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int last_line_start = (framebuffer_size/line_size-1) * line_size;
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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<scanline/sizeof(PIXEL); x++)
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{
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*((PIXEL*)(framebuffer + last_line_start + y * scanline + x * sizeof(PIXEL))) = bg_color;
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}
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}
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}
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