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Add SCROLL_LONG_FILENAMES option

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This commit is contained in:
Scott Lahteine
2017-10-18 22:15:33 -05:00
parent 9e5cbf0198
commit 783ddf9691
37 changed files with 204 additions and 45 deletions
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31
Marlin/src/lcd/ultralcd_impl_HD44780.h
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@ -991,18 +991,37 @@ static void lcd_implementation_status_screen() {
static void lcd_implementation_drawmenu_sd(const bool sel, const uint8_t row, const char* const pstr, const char* filename, char* const longFilename, const uint8_t concat, const char post_char) {
UNUSED(pstr);
uint8_t n = LCD_WIDTH - concat;
lcd.setCursor(0, row);
lcd.print(sel ? '>' : ' ');
uint8_t n = LCD_WIDTH - concat;
const char *outstr = longFilename[0] ? longFilename : filename;
if (longFilename[0]) {
filename = longFilename;
longFilename[n] = '\0';
#if ENABLED(SCROLL_LONG_FILENAMES)
if (sel) {
uint8_t name_hash = row;
for (uint8_t l = FILENAME_LENGTH; l--;)
name_hash = ((name_hash << 1) | (name_hash >> 7)) ^ filename[l]; // rotate, xor
if (filename_scroll_hash != name_hash) { // If the hash changed...
filename_scroll_hash = name_hash; // Save the new hash
filename_scroll_max = max(0, lcd_strlen(longFilename) - n); // Update the scroll limit
filename_scroll_pos = 0; // Reset scroll to the start
lcd_status_update_delay = 8; // Don't scroll right away
}
outstr += filename_scroll_pos;
}
#else
longFilename[n] = '\0'; // cutoff at screen edge
#endif
}
while (char c = *filename) {
char c;
while (n && (c = *outstr)) {
n -= charset_mapper(c);
filename++;
++outstr;
}
while (n--) lcd.write(' ');
while (n) { --n; lcd.write(' '); }
lcd.print(post_char);
}