vendor/intervention/image/src/Intervention/Image/Gd/Driver.php line 19

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  1. <?php
  3. namespace Intervention\Image\Gd;
  5. use Intervention\Image\Exception\NotSupportedException;
  6. use Intervention\Image\Image;
  8. class Driver extends \Intervention\Image\AbstractDriver
  9. {
  10. /**
  11. * Creates new instance of driver
  12. *
  13. * @param Decoder $decoder
  14. * @param Encoder $encoder
  15. */
  16. public function __construct(Decoder $decoder = null, Encoder $encoder = null)
  17. {
  18. if ( ! $this->coreAvailable()) {
  19. throw new NotSupportedException(
  20. "GD Library extension not available with this PHP installation."
  21. );
  22. }
  24. $this->decoder = $decoder ? $decoder : new Decoder;
  25. $this->encoder = $encoder ? $encoder : new Encoder;
  26. }
  28. /**
  29. * Creates new image instance
  30. *
  31. * @param int $width
  32. * @param int $height
  33. * @param mixed $background
  34. * @return \Intervention\Image\Image
  35. */
  36. public function newImage($width, $height, $background = null)
  37. {
  38. // create empty resource
  39. $core = imagecreatetruecolor($width, $height);
  40. $image = new Image(new static, $core);
  42. // set background color
  43. $background = new Color($background);
  44. imagefill($image->getCore(), 0, 0, $background->getInt());
  46. return $image;
  47. }
  49. /**
  50. * Reads given string into color object
  51. *
  52. * @param string $value
  53. * @return AbstractColor
  54. */
  55. public function parseColor($value)
  56. {
  57. return new Color($value);
  58. }
  60. /**
  61. * Checks if core module installation is available
  62. *
  63. * @return boolean
  64. */
  65. protected function coreAvailable()
  66. {
  67. return (extension_loaded('gd') && function_exists('gd_info'));
  68. }
  70. /**
  71. * Returns clone of given core
  72. *
  73. * @return mixed
  74. */
  75. public function cloneCore($core)
  76. {
  77. $width = imagesx($core);
  78. $height = imagesy($core);
  79. $clone = imagecreatetruecolor($width, $height);
  80. imagealphablending($clone, false);
  81. imagesavealpha($clone, true);
  82. $transparency = imagecolorallocatealpha($clone, 0, 0, 0, 127);
  83. imagefill($clone, 0, 0, $transparency);
  85. imagecopy($clone, $core, 0, 0, 0, 0, $width, $height);
  87. return $clone;
  88. }
  89. }