diff options
| -rw-r--r-- | ufed-curses-types.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/ufed-curses-types.c b/ufed-curses-types.c index 4ca2516..10504cf 100644 --- a/ufed-curses-types.c +++ b/ufed-curses-types.c @@ -405,3 +405,78 @@ bool isFlagLegal (const sFlag* flag) return result; } + + +/** @brief small method that takes @dispWidth and calculates keys button display lengths +**/ +void setKeyDispLen(sKey* keys, size_t dispWidth) +{ + int count[2] = { 0, 0 }; // How many buttons on a row + size_t width[2] = { dispWidth, dispWidth }; // average button width + size_t width_max[2] = { dispWidth, dispWidth }; // total width available for button display + sKey* key = keys; + int row = 0; + + /* First find out how much space each button row needs, + * and how much space there is to use per button. + */ + while (key->key) { + if (key->key > 0) + ++count[row]; + width_max[row] -= key->name_len; + if (width_max[row] < (size_t)(4 * count[row])) + width_max[row] = (size_t)(4 * count[row]); + + // reset display width of this key + key->disp_len = 0; + + // Now advance + ++key; + if (row != key->row) { + if (count[row]) + width[row] = width_max[row] / count[row]; + row = key->row; + } + } // End of calculating average space + + /* Second set the display length of each button. + * This can not be done in one single loop, because + * buttons might need less space than there is + * available, and others that are too large can use + * this as well. + */ + bool isDone[2] = { false, false }; + while (!isDone[0] || !isDone[1]) { + key = keys; + isDone[0] = true; + isDone[1] = true; + while (key->key) { + if (key->key > 0) { + // 1) Shorten buttons that have no display length and are too large + if ( (0 == key->disp_len) && (key->desc_len > width[row]) ) { + isDone[row] = false; + key->disp_len = width[row]; + } + // 2) Adapt others + else if ( (0 == key->disp_len) + ||( (count[row] > 0) + &&(width[row] > key->disp_len) + &&(key->desc_len > key->disp_len) ) ) { + // This button must be set or adapted + isDone[row] = false; + key->disp_len = min(width[row], key->desc_len); + if (key->disp_len < width[row]) { + // The button does not need all available space + // and can give the space to others + --count[row]; // this one is done + width_max[row] -= key->disp_len; // That is what is used + if (count[row] > 0) + width[row] = width_max[row] / count[row]; + } + } // End of setting/adapting button + } // End of having button bearing key + ++key; + row = key->row; + } // End of having a key + } // End of setting button display lengths +} |