MochaLite/ios_fs/source/text.c
2016-12-12 19:31:02 +01:00

91 lines
1.7 KiB
C

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "imports.h"
#include "types.h"
#include "font_bin.h"
#define FRAMEBUFFER_ADDRESS (0x14000000+0x38C0000)
#define FRAMEBUFFER_STRIDE (0xE00)
#define FRAMEBUFFER_STRIDE_WORDS (FRAMEBUFFER_STRIDE >> 2)
#define CHAR_SIZE_X (8)
#define CHAR_SIZE_Y (8)
u32* const framebuffer = (u32*)FRAMEBUFFER_ADDRESS;
void clearScreen(u32 color)
{
int i;
for(i = 0; i < ((FRAMEBUFFER_STRIDE * 504)/4); i++)
{
framebuffer[i] = color;
}
}
void clearLine(int y, u32 color)
{
u32* fb = &framebuffer[y * FRAMEBUFFER_STRIDE_WORDS];
u32* fb_end = &framebuffer[(y+CHAR_SIZE_Y) * FRAMEBUFFER_STRIDE_WORDS];
while(fb < fb_end)
{
*fb = color;
fb++;
}
}
void drawCharacter(char c, int x, int y)
{
if(c < 32)return;
c -= 32;
u8* charData = (u8*)&font_bin[(CHAR_SIZE_X * CHAR_SIZE_Y * c) / 8];
u32* fb = &framebuffer[x + y * FRAMEBUFFER_STRIDE_WORDS];
int i, j;
for(i = 0; i < CHAR_SIZE_Y; i++)
{
u8 v= *(charData++);
for(j = 0; j < CHAR_SIZE_X; j++)
{
if(v & 1) *fb = 0x00000000;
else *fb = 0xFFFFFFFF;
v >>= 1;
fb++;
}
fb += FRAMEBUFFER_STRIDE_WORDS - CHAR_SIZE_X;
}
}
void drawString(char* str, int x, int y)
{
if(!str) return;
int k;
int dx = 0, dy = 0;
for(k = 0; str[k]; k++)
{
if(str[k] >= 32 && str[k] < 128) drawCharacter(str[k], x + dx, y + dy);
dx += 8;
if(str[k] == '\n')
{
dx = 0;
dy -= 8;
}
}
}
void _printf(int x, int y, const char *format, ...)
{
va_list args;
va_start(args, format);
char buffer[0x100];
FS_VSNPRINTF(buffer, sizeof(buffer), format, args);
drawString(buffer, x, y);
va_end(args);
}