90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
/*
|
|
* draw.c
|
|
*
|
|
* Code to print to the screen by mid-kid @CakesFW
|
|
*/
|
|
|
|
#include "draw.h"
|
|
#include "screeninit.h"
|
|
#include "fs.h"
|
|
#include "memory.h"
|
|
#include "font.h"
|
|
|
|
static const struct fb {
|
|
u8 *top_left;
|
|
u8 *top_right;
|
|
u8 *bottom;
|
|
} *const fb = (struct fb *)0x23FFFE00;
|
|
|
|
static inline int strlen(const char *string)
|
|
{
|
|
char *stringEnd = (char *)string;
|
|
|
|
while(*stringEnd) stringEnd++;
|
|
|
|
return stringEnd - string;
|
|
}
|
|
|
|
void clearScreens(void)
|
|
{
|
|
memset32(fb->top_left, 0, 0x46500);
|
|
memset32(fb->top_right, 0, 0x46500);
|
|
memset32(fb->bottom, 0, 0x38400);
|
|
}
|
|
|
|
void loadSplash(void)
|
|
{
|
|
initScreens();
|
|
|
|
//Don't delay boot if no splash image is on the SD
|
|
if(fileRead(fb->top_left, "/luma/splash.bin") +
|
|
fileRead(fb->bottom, "/luma/splashbottom.bin"))
|
|
{
|
|
u64 i = 0x1400000;
|
|
while(i--) __asm("mov r0, r0"); //Less Ghetto sleep func
|
|
}
|
|
}
|
|
|
|
void drawCharacter(char character, int posX, int posY, u32 color)
|
|
{
|
|
u8 *const select = fb->top_left;
|
|
|
|
for(int y = 0; y < 8; y++)
|
|
{
|
|
char charPos = font[character * 8 + y];
|
|
|
|
for(int x = 7; x >= 0; x--)
|
|
if ((charPos >> x) & 1)
|
|
{
|
|
int screenPos = (posX * SCREEN_TOP_HEIGHT * 3 + (SCREEN_TOP_HEIGHT - y - posY - 1) * 3) + (7 - x) * 3 * SCREEN_TOP_HEIGHT;
|
|
|
|
select[screenPos] = color >> 16;
|
|
select[screenPos + 1] = color >> 8;
|
|
select[screenPos + 2] = color;
|
|
}
|
|
}
|
|
}
|
|
|
|
int drawString(const char *string, int posX, int posY, u32 color)
|
|
{
|
|
for(int i = 0, line_i = 0; i < strlen(string); i++, line_i++)
|
|
{
|
|
if(string[i] == '\n')
|
|
{
|
|
posY += SPACING_Y;
|
|
line_i = 0;
|
|
i++;
|
|
}
|
|
else if(line_i >= (SCREEN_TOP_WIDTH - posX) / SPACING_X)
|
|
{
|
|
// Make sure we never get out of the screen.
|
|
posY += SPACING_Y;
|
|
line_i = 2; //Little offset so we know the same string continues.
|
|
if(string[i] == ' ') i++; //Spaces at the start look weird
|
|
}
|
|
|
|
drawCharacter(string[i], posX + line_i * SPACING_X, posY, color);
|
|
}
|
|
|
|
return posY;
|
|
} |