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#include <raleigh/s/text_flower.h>
#include <knob/block.h>
namespace raleigh {
text_flower::text_flower(const char *s, uint32_t cols, uint32_t max_rows)
: s(s), lines(max_rows ? max_rows : 10), offsets(max_rows ? max_rows : 10),
max_rows(max_rows), cols(cols) {
flow_text();
}
__attribute__ ((pure))
uint32_t text_flower::get_n_lines() {
return lines.n_entries;
}
__attribute__ ((pure))
char *text_flower::get_nth_line(uint32_t n) {
return lines.buf[n];
}
__attribute__ ((pure))
uint32_t text_flower::get_line_offset(uint32_t n) {
return offsets.buf[n];
}
void text_flower::draw_text(_pixel_t *start, uint32_t pitch, const struct font_info *fi, _pixel_t color) {
for (uint32_t y = 0; y < lines.n_entries; ++y) {
const char *line = lines.buf[y];
for (uint32_t x = 0; line[x]; ++x)
put_char_no_bg(fi, line[x], start + y * fi->space_height * pitch + x * fi->space_width, pitch, color);
}
}
void text_flower::push_line() {
lines.add_back(strndup(line_start, row_len));
offsets.add_back(line_start - s);
line_start = on_char;
row_len = 0;
if (max_rows && (lines.n_entries == max_rows))
on_char = "";
}
void text_flower::flow_text() {
for (uint32_t i = 0; i < lines.n_entries; ++i)
free_block(lines.buf[i]);
lines.n_entries = 0;
offsets.n_entries = 0;
line_start = on_char = s;
row_len = 0;
while (*on_char) {
if (*on_char == '\n') {
++on_char;
push_line();
}
else if (*on_char == ' ') {
++on_char;
if (row_len != 0) {
if (++row_len == cols)
push_line();
}
else
++line_start;
}
else {
uint32_t word_len = str_find_any(on_char, " \n");
if (!cols) {
row_len += word_len;
on_char += word_len;
}
else if (row_len + word_len <= cols) {
row_len += word_len;
on_char += word_len;
if (row_len == cols)
push_line();
}
else if (word_len > cols) {
on_char += cols - row_len;
row_len = cols;
push_line();
}
else
push_line();
}
}
if (row_len && (!max_rows || (lines.n_entries != max_rows)))
push_line();
}
}
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