int main(int argc, char **argv)
{
ARRAY *a;
SCAN *scan;
char *str;
int i;
scan = scan_create(1, stdin);
scan->delims = "+-=/";
scan->whites = " \t\n";
scan->comments = "";
a = array_create(5, char);
printf("> ");
while((str = scan_get(scan)) != NULL) {
if(*str == '=') {
scan->delims = ""; scan->whites = "\n";
str = scan_get(scan);
scan->delims = "+-=/"; scan->whites = " \t\n";
array_clear(a);
array_append_ptr(a, str, strlen(str));
}
else if(*str == '+') {
scan->delims = ""; scan->whites = "\n";
str = scan_get(scan);
scan->delims = "+-=/"; scan->whites = " \t\n";
printf("append(%s)\n", str);
array_append_ptr(a, str, strlen(str));
}
else if(*str == '-') {
scan->delims = ""; scan->whites = "\n";
str = scan_get(scan);
scan->delims = "+-=/"; scan->whites = " \t\n";
printf("prepend(%s)\n", str);
array_prepend_ptr(a, str, strlen(str));
}
else if(*str == '/') {
str = scan_get(scan);
array_destroy_index(a, atoi(str));
}
else if(*str == '^') {
str = scan_get(scan);
i = atoi(str);
str = scan_get(scan);
scan->delims = "+-=/"; scan->whites = " \t\n";
array_insert_index(a, *str, char, i);
}
str = array_to_pointer(a);
printf(" \"%s\"\n> ", str);
xfree(str);
}
static text_renderer_cell_p find_free_cell_or_revoke_unused_cell(text_renderer_p renderer, text_renderer_font_p font, uint32_t glyph_width, uint32_t glyph_height, uint32_t texture_width, uint32_t texture_height, size_t* line_idx, size_t* cell_idx) {
// Padding between the glyphs
const uint32_t padding = 1;
// Keep track of the texture coordinates so we know where our cell is on the texture
uint32_t x = 0, y = 0;
// First search for a line with the matching height
for(size_t i = 0; i < renderer->lines->length; i++) {
text_renderer_line_p line = &array_data(renderer->lines, text_renderer_line_t)[i];
if (line->height == glyph_height) {
// We found a line with matching height, now look if we can get our cell in there
x = 0;
for(size_t j = 0; j < line->cells->length; j++) {
text_renderer_cell_p current_cell = array_elem_ptr(line->cells, j);
x += current_cell->width + padding;
}
if (x + glyph_width <= texture_width) {
// There is space left at the end of this line, add our cell here
text_renderer_cell_p cell = array_append_ptr(line->cells);
memset(cell, 0, sizeof(text_renderer_cell_t));
cell->x = x;
cell->y = y;
cell->width = glyph_width;
*line_idx = i;
*cell_idx = line->cells->length - 1;
return cell;
}
// No space at end of line, search next line
}
y += line->height + padding;
}
// We haven't found a matching line or every matching line was full. Anyway add a new line
// if there is space left at the bottom of the texture and put the cell in there.
if (y + glyph_height + padding <= texture_height) {
text_renderer_line_p line = array_append_ptr(renderer->lines);
line->height = glyph_height;
line->cells = array_of(text_renderer_cell_t);
text_renderer_cell_p cell = array_append_ptr(line->cells);
memset(cell, 0, sizeof(text_renderer_cell_t));
cell->x = x;
cell->y = y;
cell->width = glyph_width;
*line_idx = renderer->lines->length - 1;
*cell_idx = 0;
return cell;
}
// We would like to add a new line but there is not enough free space at the bottom
// to the texture. For now just give up.
*line_idx = (size_t)-1;
*cell_idx = (size_t)-1;
return NULL;
}
