gets points in twips
| public static getPointsInTwips ( float $value ) : integer | ||
| $value | float | |
| return | integer | |
/**
* code for parsing the wmf is originally from: http://www.fpdf.de/downloads/addons/55/
* as an addon for FPDF, written by Martin HALL-MAY
*/
private function setImageDimension()
{
$headerSize = $this->getHeaderSize();
fseek($this->_stream, $headerSize);
while (!feof($this->_stream)) {
$recordInfo = unpack('Lsize/Sfunc', fread($this->_stream, 6));
// size of record given in WORDs (= 2 bytes)
$size = $recordInfo['size'];
// func is number of GDI function
$func = $recordInfo['func'];
// parameters are read as one block and processed
// as necessary by the case statement below.
// the data are stored in little-endian format and are unpacked using:
// s - signed 16-bit int
// S - unsigned 16-bit int (or WORD)
// L - unsigned 32-bit int (or DWORD)
// NB. parameters to GDI functions are stored in reverse order
// however structures are not reversed,
// e.g. POINT { int x, int y } where x=3000 (0x0BB8) and y=-1200 (0xFB50)
// is stored as B8 0B 50 FB
if ($size > 3) {
$params = fread($this->_stream, 2 * ($size - 3));
}
switch ($func) {
case 0x20c:
// SetWindowExt
$sizes = array_reverse(unpack('s2', $params));
$this->setImageWidth(PHPRtfLite_Unit::getPointsInTwips($sizes[0]));
$this->setImageHeight(PHPRtfLite_Unit::getPointsInTwips($sizes[1]));
return;
case 0x0:
return;
}
}
}
/**
* gets rtf image height
*
* @return integer
*/
private function getImageRtfHeight()
{
if ($this->_height > 0) {
return PHPRtfLite_Unit::getUnitInTwips($this->_height);
}
$imageHeight = $this->_imageHeight ? $this->_imageHeight : 100;
if ($this->_width > 0) {
$imageWidth = $this->_imageWidth ? $this->_imageWidth : 100;
$height = $imageHeight / $imageWidth * $this->_width;
return PHPRtfLite_Unit::getUnitInTwips($height);
}
return PHPRtfLite_Unit::getPointsInTwips($imageHeight);
}
