static void put_string_in_rgb_image(uint8_t *x, int w, int h,
int posx, int posy, uint8_t *fg, uint8_t *bg, int kerning,
struct bitmap_font *font, char *string)
{
int posx0 = posx;
while (1)
{
int c = *string++;
if (!c) break;
if (c == '\n') {
posx = posx0;
posy += font->height;
continue;
}
if (c > 0 && c < font->number_of_glyphs)
{
for (int i = 0; i < font->width; i++)
for (int j = 0; j < font->height; j++)
{
int ii = posx + i;
int jj = posy + j;
if (get_font_bit(font, c, i, j))
put_pixel_rgb(x, w, h, ii, jj, fg);
else
put_pixel_rgb(x, w, h, ii, jj, bg);
}
}
posx += font->width + kerning;
}
}
static void
put_char_in_rgb_image(uint8_t *rgb, int w, int h, struct bitmap_font *f,
int posx, int posy, uint8_t *fg, uint8_t *bg, int c)
{
if (c > 0 && c < f->number_of_glyphs)
for (int i = 0; i < f->width; i++)
for (int j = 0; j < f->height; j++)
{
int ii = posx + i;
int jj = posy + j;
if (get_font_bit(f, c, i, j))
put_pixel_rgb(rgb, w, h, ii, jj, fg);
else
put_pixel_rgb(rgb, w, h, ii, jj, bg);
}
}
// dump the terminal state into a rgb bitmap
void term_bitmap(uint8_t *rgb, int w, int h, struct terminal *t)
{
// compute grid offsets
int ox = t->font->width + t->kerning;
int oy = t->font->height + t->spacing;
// size consistency check
if (w != ox * t->w || h != oy * t->h)
fprintf(stderr, "WARNING: (%d,%d) != (%d,%d)\n",
w, h, ox*t->w, oy*t->h);
// clear rgb buffer
for (int i = 0; i < 3 * w * h; i++)
rgb[i] = 0;
// draw character bitmaps
for (int j = 0; j < t->h; j++)
for (int i = 0; i < t->w; i++)
{
int c = t->letters[j * t->w + i];
int a = t->attributes[j * t->w + i];
uint8_t fg[3] = {205, 205, 205};
uint8_t bg[3] = {0, 0, 0};
put_char_in_rgb_image(rgb,w,h, t->font, i*ox,j*oy, fg,bg, c);
}
// draw cursor
if (t->cursorx >= 0 && t->cursorx < t->w)
if (t->cursory >= 0 && t->cursory < t->h)
{
int c0x = t->cursorx * ox;
int c0y = t->cursory * oy;
uint8_t cc[3] = {200, 100, 0};
for (int i = 0; i < ox; i++) {
put_pixel_rgb(rgb,w,h, c0x + i, c0y , cc);
put_pixel_rgb(rgb,w,h, c0x + i, c0y + oy, cc);
}
for (int j = 0; j < oy; j++) {
put_pixel_rgb(rgb,w,h, c0x , c0y + j, cc);
put_pixel_rgb(rgb,w,h, c0x + ox, c0y + j, cc);
}
}
}
