/**
* helper function to adjust the desired width of a column to those allowable by the maxium size
*/
protected function adjustDesiredWidths($desired_widths, $width)
{
$cols = array_keys($desired_widths);
//we cannot fit all the rows as desired .
//we will add width to the minimum width until we get to the maximum table width
$width_to_add = $this->font_metric->getCharacterWidth('l', true);
if ($width_to_add <= 0) {
$width_to_add = 100;
}
$extra_width = $width - count($cols) * $this->min_cell_width;
//the extra width we have over from the minimum
if ($extra_width <= 0 || $width_to_add == 0) {
//fail nicely
return $desired_widths;
}
$widths = array();
foreach ($cols as $col) {
$widths[$col] = $this->min_cell_width;
//set all widths to the minimum
}
$cells_in_need = TRUE;
$changed = FALSE;
$col = $cols[0];
$c = 0;
while ($extra_width > 0 && $cells_in_need) {
$desired_extra = $desired_widths[$col] - $widths[$col];
if ($desired_extra > 0) {
//our cell wants to be bigger then it currently is
$changed = TRUE;
if ($desired_extra < $width_to_add) {
if ($extra_width >= $desired_extra) {
$widths[$col] += $desired_extra;
$extra_width -= $desired_extra;
} else {
$widths[$col] += $extra_width;
$extra_width = 0;
}
} else {
if ($extra_width >= $width_to_add) {
$widths[$col] += $width_to_add;
$extra_width -= $width_to_add;
} else {
$widths[$col] += $extra_width;
$extra_width = 0;
}
}
}
if ($c >= count($cols) - 1) {
//we restart looping through
$c = 0;
$col = $cols[0];
$cells_in_need = $changed;
//if none were changed then we are done
} else {
//increment our loop counter
$c++;
$col = $cols[$c];
}
}
return $widths;
}
/**
* Gets the character width of a character
* @param mixed $ch a character
* @param bool use_font_size default false --
* @returns float the width
*/
public function getCharacterWidth($ch, $use_font_size = false)
{
if ($this->direction != -1) {
return $this->font_metrics[$this->direction]->getCharacterWidth($ch, $use_font_size);
} else {
return parent::getCharacterWidth($ch, $use_font_size);
}
}
