diff options
Diffstat (limited to 'fb-gui.c')
| -rw-r--r-- | fb-gui.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/fb-gui.c b/fb-gui.c new file mode 100644 index 0000000..3c6328c --- /dev/null +++ b/fb-gui.c @@ -0,0 +1,189 @@ +#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; + } +} + |