public static function renewCache($fileOriginal, $fileCached, $presetName)
{
//TODO: move all verifications from image.php here
$presetsList = (include 'image_config.php');
if (empty($presetsList[$presetName])) {
throw new RuntimeException('Image preset does not exist!');
}
$preset = $presetsList[$presetName];
if (file_exists($fileCached)) {
if (time() - filemtime($fileCached) < rad_config::getParam('cache.power.time')) {
return true;
}
} else {
$cachePath = dirname($fileCached);
if (!is_dir($cachePath) && !recursive_mkdir($cachePath)) {
throw new RuntimeException('Could not create cache folder for image');
}
}
$img = new self();
if (!$img->set($fileOriginal, $fileCached, $preset) || !$img->resize()) {
throw new RuntimeException('Image conversion error: ' . $img->getError());
}
}
/**
* 用一张PNG图片给原始图片加水印，水印图片将自动调整到目标图片大小
*
* @param string $png png图片的路径
* @param string $hp 水平位置 left|center|right
* @param string $vp 垂直位置 top|center|bottom
* @param int $pct 水印的透明度 0-100, 0为完全透明,100为完全不透明,只适用于非PNG图片水印
* @param string $path 如果指定则生成图片到$path
* @param
* @return
*/
function waterMark($markImg, $hp = 'center', $vp = 'center', $pct = 50, $path = null)
{
//原图信息
$srcw = $this->getWidth();
$srch = $this->getHeight();
//水印图信息
$mark = new self($markImg);
$markw = $mark->getWidth();
$markh = $mark->getHeight();
//水印图片大于目标图片，调整大小
if ($markw > $srcw || $markh > $srch) {
//先将水印图片调整到原始图片大小-10个像素
$mark->resize($srcw - 10, $srch - 10, true);
$markw = $mark->getWidth();
$markh = $mark->getHeight();
}
//判断水印位置
$arrx = array('left' => 0, 'center' => floor(($srcw - $markw) / 2), 'right' => $srcw - $markw);
$arry = array('top' => 0, 'center' => floor(($srch - $markh) / 2), 'bottom' => $srch - $markh);
$x = isset($arrx[$hp]) ? $arrx[$hp] : $arrx['center'];
$y = isset($arry[$vp]) ? $arry[$vp] : $arry['center'];
//png图片水印
if ($mark->getType() == 3) {
//打开混色模式
imagealphablending($this->img, true);
imagecopy($this->img, $mark->getResource(), $x, $y, 0, 0, $markw, $markh);
} else {
imagecopymerge($this->img, $mark->getResource(), $x, $y, 0, 0, $markw, $markh, $pct);
}
unset($mark);
if ($path) {
return $this->save($path);
}
return $this;
}
public static function thumbnail($source, $destination, $maxwidth = 150, $maxheight = 150, $scale = true)
{
if (file_exists($destination)) {
return true;
}
$img = new self();
$img->createfromfile($source);
$img->resize($maxwidth, $maxheight, $scale);
$img->interlace();
$ret = $img->save($destination);
$img->close();
return $ret;
}
