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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <linux/fb.h>
#include "fbtools.h"
#include "fs.h"
#include "fb-gui.h"
/* public */
int visible = 1;
/* private */
static struct fs_font *f;
static char *x11_font = "10x20";
static int ys = 3;
static int xs = 10;
/* ---------------------------------------------------------------------- */
/* clear screen (areas) */
void fb_clear_mem(void)
{
if (visible)
fb_memset(fb_mem,0,fb_fix.smem_len);
}
void fb_clear_screen(void)
{
if (visible)
fb_memset(fb_mem,0,fb_fix.line_length * fb_var.yres);
}
static void fb_clear_rect(int x1, int x2, int y1,int y2)
{
unsigned char *ptr;
int y,h;
if (!visible)
return;
if (x2 < x1)
h = x2, x2 = x1, x1 = h;
if (y2 < y1)
h = y2, y2 = y1, y1 = h;
ptr = fb_mem;
ptr += y1 * fb_fix.line_length;
ptr += x1 * fs_bpp;
for (y = y1; y <= y2; y++) {
fb_memset(ptr, 0, (x2 - x1 + 1) * fs_bpp);
ptr += fb_fix.line_length;
}
}
/* ---------------------------------------------------------------------- */
/* draw lines */
static void fb_setpixel(int x, int y, unsigned int color)
{
unsigned char *ptr;
ptr = fb_mem;
ptr += y * fb_fix.line_length;
ptr += x * fs_bpp;
fs_setpixel(ptr, color);
}
static void fb_line(int x1, int x2, int y1,int y2)
{
int x,y,h;
float inc;
if (x2 < x1)
h = x2, x2 = x1, x1 = h;
if (y2 < y1)
h = y2, y2 = y1, y1 = h;
if (x2 - x1 < y2 - y1) {
inc = (float)(x2-x1)/(float)(y2-y1);
for (y = y1; y <= y2; y++) {
x = x1 + inc * (y - y1);
fb_setpixel(x,y,fs_white);
}
} else {
inc = (float)(y2-y1)/(float)(x2-x1);
for (x = x1; x <= x2; x++) {
y = y1 + inc * (x - x1);
fb_setpixel(x,y,fs_white);
}
}
}
static void fb_rect(int x1, int x2, int y1,int y2)
{
fb_line(x1, x2, y1, y1);
fb_line(x1, x2, y2, y2);
fb_line(x1, x1, y1, y2);
fb_line(x2, x2, y1, y2);
}
/* ---------------------------------------------------------------------- */
/* text stuff */
void fb_text_init1(char *font)
{
char *fonts[2] = { font, NULL };
if (NULL == f)
f = fs_consolefont(font ? fonts : NULL);
#ifndef X_DISPLAY_MISSING
if (NULL == f && 0 == fs_connect(NULL))
f = fs_open(font ? font : x11_font);
#endif
if (NULL == f) {
fprintf(stderr,"no font available\n");
exit(1);
}
}
void fb_text_init2(void)
{
fs_init_fb(255);
}
int fb_font_width(void)
{
return f->width;
}
void fb_status_line(unsigned char *msg)
{
int y;
if (!visible)
return;
y = fb_var.yres - f->height - ys;
fb_memset(fb_mem + fb_fix.line_length * y, 0,
fb_fix.line_length * (f->height+ys));
fb_line(0, fb_var.xres, y, y);
fs_puts(f, 0, y+ys, msg);
}
void fb_edit_line(unsigned char *str, int pos)
{
int x,y;
if (!visible)
return;
y = fb_var.yres - f->height - ys;
x = pos * f->width;
fb_memset(fb_mem + fb_fix.line_length * y, 0,
fb_fix.line_length * (f->height+ys));
fb_line(0, fb_var.xres, y, y);
fs_puts(f, 0, y+ys, str);
fb_line(x, x + f->width, fb_var.yres-1, fb_var.yres-1);
fb_line(x, x + f->width, fb_var.yres-2, fb_var.yres-2);
}
void fb_text_box(int x, int y, char *lines[], unsigned int count)
{
unsigned int i,len,max, x1, x2, y1, y2;
if (!visible)
return;
max = 0;
for (i = 0; i < count; i++) {
len = strlen(lines[i]);
if (max < len)
max = len;
}
x1 = x;
x2 = x + max * f->width;
y1 = y;
y2 = y + count * f->height;
x += xs; x2 += 2*xs;
y += ys; y2 += 2*ys;
fb_clear_rect(x1, x2, y1, y2);
fb_rect(x1, x2, y1, y2);
for (i = 0; i < count; i++) {
fs_puts(f,x,y,lines[i]);
y += f->height;
}
}
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