/**
* @param Style $styleToUpdate (passed as reference)
* @param Style $baseStyle
* @return void
*/
private function mergeFontStyles($styleToUpdate, $baseStyle)
{
if (!$this->hasSetFontBold && $baseStyle->isFontBold()) {
$styleToUpdate->setFontBold();
}
if (!$this->hasSetFontItalic && $baseStyle->isFontItalic()) {
$styleToUpdate->setFontItalic();
}
if (!$this->hasSetFontUnderline && $baseStyle->isFontUnderline()) {
$styleToUpdate->setFontUnderline();
}
if (!$this->hasSetFontStrikethrough && $baseStyle->isFontStrikethrough()) {
$styleToUpdate->setFontStrikethrough();
}
}
/**
* Merges the current style with the given style, using the given style as a base. This means that:
* - if current style and base style both have property A set, use current style property's value
* - if current style has property A set but base style does not, use current style property's value
* - if base style has property A set but current style does not, use base style property's value
*
* @NOTE: This function returns a new style.
*
* @param Style $baseStyle
* @return Style New style corresponding to the merge of the 2 styles
*/
public function mergeWith($baseStyle)
{
$mergedStyle = clone $this;
if (!$this->hasSetFontBold && $baseStyle->isFontBold()) {
$mergedStyle->setFontBold();
}
if (!$this->hasSetFontItalic && $baseStyle->isFontItalic()) {
$mergedStyle->setFontItalic();
}
if (!$this->hasSetFontUnderline && $baseStyle->isFontUnderline()) {
$mergedStyle->setFontUnderline();
}
if (!$this->hasSetFontStrikethrough && $baseStyle->isFontStrikethrough()) {
$mergedStyle->setFontStrikethrough();
}
if (!$this->hasSetFontSize && $baseStyle->getFontSize() !== self::DEFAULT_FONT_SIZE) {
$mergedStyle->setFontSize($baseStyle->getFontSize());
}
if (!$this->hasSetFontSize && $baseStyle->getFontColor() !== self::DEFAULT_FONT_COLOR) {
$mergedStyle->setFontColor($baseStyle->getFontColor());
}
if (!$this->hasSetFontName && $baseStyle->getFontName() !== self::DEFAULT_FONT_NAME) {
$mergedStyle->setFontName($baseStyle->getFontName());
}
if (!$this->hasSetWrapText && $baseStyle->shouldWrapText()) {
$mergedStyle->setShouldWrapText();
}
return $mergedStyle;
}