function PHPExcel_Writer_Excel5_Worksheet::_processBitmapGd in Loft Data Grids 6.2

Same name and namespace in other branches

1. 7.2 vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5/Worksheet.php \PHPExcel_Writer_Excel5_Worksheet::_processBitmapGd()

* Convert a GD-image into the internal format. * * @access private *

Parameters

resource $image The image to process: * @return array Array with data and properties of the bitmap

1 call to PHPExcel_Writer_Excel5_Worksheet::_processBitmapGd()

PHPExcel_Writer_Excel5_Worksheet::insertBitmap in vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5/Worksheet.php

* Insert a 24bit bitmap image in a worksheet. * * @access public *

File

vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5/Worksheet.php, line 2583

Class

PHPExcel_Writer_Excel5_Worksheet

PHPExcel_Writer_Excel5_Worksheet

Code

function _processBitmapGd($image) {
  $width = imagesx($image);
  $height = imagesy($image);
  $data = pack("Vvvvv", 0xc, $width, $height, 0x1, 0x18);
  for ($j = $height; $j--;) {
    for ($i = 0; $i < $width; ++$i) {
      $color = imagecolorsforindex($image, imagecolorat($image, $i, $j));
      foreach (array(
        "red",
        "green",
        "blue",
      ) as $key) {
        $color[$key] = $color[$key] + round((255 - $color[$key]) * $color["alpha"] / 127);
      }
      $data .= chr($color["blue"]) . chr($color["green"]) . chr($color["red"]);
    }
    if (3 * $width % 4) {
      $data .= str_repeat("\0", 4 - 3 * $width % 4);
    }
  }
  return array(
    $width,
    $height,
    strlen($data),
    $data,
  );
}