protected function createWeb()
{
Helpers::purge($this->wwwDir);
Helpers::purge($this->wwwDir . '/images');
$image = Image::fromBlank(500, 500);
$image->save($this->wwwDir . '/images/image.jpg');
}
public function getCaptchaImage($color, $fontSize)
{
$string = $this->sessSect->question;
$fontSize = $fontSize ? $fontSize : 14;
$fontFile = __DIR__ . '/OpenSans-Semibold.ttf';
$typeSpace = imagettfbbox($fontSize, 0, $fontFile, $string);
$imageWidth = abs($typeSpace[4] - $typeSpace[0]) + 10;
$imageHeight = abs($typeSpace[5] - $typeSpace[1]) + 10;
if ($color) {
$background = $this->getColor($color);
} else {
$background = Image::rgb(255, 255, 255);
}
$image = Image::fromBlank($imageWidth, $imageHeight, $background);
$image->ttfText($fontSize, 0, 0, 20, Image::rgb(0, 0, 0), $fontFile, $string);
$image->send(Image::PNG);
}
/**
* @param string $url
* @param int $width
* @param int $height
* @param int $crop
* @return string
* @register fitThumb
* @todo refactoring fit/thumb helpers, move common parts of code to separate methods
*/
public function fitThumbImage($url, $width, $height, $crop = NULL)
{
$origName = substr($url, strrpos($url, '/') + 1);
$origPath = ($this->domainDir ? $this->domainDir : $this->cacheDir) . $url;
if (!file_exists($origPath)) {
return $url;
}
$a = explode('.', $origPath);
$ext = strtolower(array_pop($a));
$thumbName = $this->getThumbName($origName, $width, $height, filemtime($origPath), $crop);
$origDirectory = explode('/', $url);
array_pop($origDirectory);
$origDirectory = implode('/', $origDirectory);
$name = md5(($this->domainDirUrl ? $this->domainDirUrl : $this->cacheDirUrl) . '/' . $origDirectory . '/fitThumbs/' . $thumbName) . ".{$ext}";
$thumbPath = ($this->domainDir ? $this->domainDir : $this->cacheDir) . $origDirectory . '/fitThumbs/' . $name;
$thumbUrl = ($this->domainDirUrl ? $this->domainDirUrl : $this->cacheDirUrl) . $origDirectory . '/fitThumbs/' . $name;
FileSystem::createDir(($this->domainDir ? $this->domainDir : $this->cacheDir) . $origDirectory . '/fitThumbs/');
// thumb already exits
if (is_file($thumbPath)) {
return $thumbUrl;
}
try {
if (class_exists('Imagick')) {
$canvas = new \Imagick();
$canvas->newImage($width, $height, "rgba(0, 0, 0, 0)");
$image = new Imagick($origPath);
$origWidth = $image->getImageWidth();
$origHeight = $image->getImageHeight();
if ($origWidth > $width || $origHeight > $height) {
if ($origHeight > $height) {
// use orig height, crop width
$image->resizeImage(0, $height, Imagick::FILTER_LANCZOS, 1);
} else {
// use orig width, crop height
$image->resizeImage($width, 0, Imagick::FILTER_LANCZOS, 1);
}
switch ($crop) {
case 'top':
$x = (int) (($image->getImageWidth() - $width) / 2);
$y = 0;
break;
case 'bottom':
$x = (int) (($image->getImageWidth() - $width) / 2);
$y = (int) ($image->getImageHeight() - $height);
break;
case 'left':
$x = 0;
$y = (int) (($image->getImageHeight() - $height) / 2);
break;
case 'right':
$x = (int) ($image->getImageWidth() - $width);
$y = (int) (($image->getImageHeight() - $height) / 2);
break;
case 'center':
default:
$x = (int) (($image->getImageWidth() - $width) / 2);
$y = (int) (($image->getImageHeight() - $height) / 2);
}
$image->cropImage($width, $height, $x, $y);
}
$left = $width / 2 - $image->getImageWidth() / 2;
$top = $height / 2 - $image->getImageHeight() / 2;
$canvas->compositeImage($image, Imagick::COMPOSITE_ADD, $left, $top);
$canvas->writeImage($thumbPath);
$image->destroy();
$canvas->destroy();
} else {
$canvas = Image::fromBlank($width, $height, Image::rgb(0, 0, 0, 127));
$image = Image::fromFile($origPath);
$origWidth = $image->getWidth();
$origHeight = $image->getHeight();
if ($origWidth > $width || $origHeight > $height) {
// zachovani pruhlednosti u PNG
$image->alphaBlending(FALSE);
$image->saveAlpha(TRUE);
if ($origHeight > $height) {
// use orig height, crop width
$image->resize(NULL, $height);
} else {
// use orig width, crop height
$image->resize($width, NULL);
}
switch ($crop) {
case 'top':
$x = (int) (($image->getWidth() - $width) / 2);
$y = 0;
break;
case 'bottom':
$x = (int) (($image->getWidth() - $width) / 2);
$y = (int) ($image->getHeight() - $height);
break;
case 'left':
$x = 0;
$y = (int) (($image->getHeight() - $height) / 2);
break;
case 'right':
$x = (int) ($image->getWidth() - $width);
$y = (int) (($image->getHeight() - $height) / 2);
break;
case 'center':
default:
$x = (int) (($image->getWidth() - $width) / 2);
$y = (int) (($image->getHeight() - $height) / 2);
}
$image->crop($x, $y, $width, $height);
if ($ext !== 'png') {
$image->sharpen();
}
}
$left = $width / 2 - $image->getWidth() / 2;
$top = $height / 2 - $image->getHeight() / 2;
$canvas->place($image, $left, $top);
$canvas->save($thumbPath);
}
return $thumbUrl;
} catch (\Exception $e) {
return ($this->domainDirUrl ? $this->domainDirUrl : $this->cacheDirUrl) . $url;
}
}
/**
* Draws captcha image
*
* @return string
*/
protected function getImageData()
{
$word = $this->getWord();
$font = $this->getFontFile();
$size = $this->getFontSize();
$textColor = $this->getTextColor();
$bgColor = $this->getBackgroundColor();
$box = $this->getDimensions();
$width = $this->getImageWidth();
$height = $this->getImageHeight();
$first = Image::fromBlank($width, $height, $bgColor);
$second = Image::fromBlank($width, $height, $bgColor);
$x = ($width - $box['width']) / 2;
$y = ($height + $box['height']) / 2;
$first->fttext($size, 0, $x, $y, $textColor, $font, $word);
$frequency = $this->getRandom(0.05, 0.1);
$amplitude = $this->getRandom(2, 4);
$phase = $this->getRandom(0, 6);
for ($x = 0; $x < $width; $x++) {
for ($y = 0; $y < $height; $y++) {
$sy = round($y + sin($x * $frequency + $phase) * $amplitude);
$sx = round($x + sin($y * $frequency + $phase) * $amplitude);
$color = $first->colorat($x, $y);
$second->setpixel($sx, $sy, $color);
}
}
$first->destroy();
if (defined('IMG_FILTER_SMOOTH') === TRUE) {
$second->filter(IMG_FILTER_SMOOTH, $this->getFilterSmooth());
}
if (defined('IMG_FILTER_CONTRAST') === TRUE) {
$second->filter(IMG_FILTER_CONTRAST, $this->getFilterContrast());
}
ob_start();
imagepng($second->getImageResource());
$contents = ob_get_contents();
ob_end_clean();
return $contents;
}
