/**
* @param Image $image
* @return resource
*/
public function apply(Image $image)
{
$originalHeight = $image->getHeight();
$originalWidth = $image->getWidth();
$canvasHeight = $originalHeight + 2 * $this->w;
$canvasWidth = $originalWidth + 2 * $this->w;
$canvas = imagecreatetruecolor($canvasWidth, $canvasHeight);
imagefill($canvas, 0, 0, imagecolorallocatealpha($canvas, 0, 0, 0, 127));
$this->addBorders($canvas, $originalWidth, $originalHeight, $canvasHeight, $canvasWidth);
$this->addCorners($canvas, $canvasHeight, $canvasWidth);
imagecopyresampled($canvas, $image->getResource(), $this->w, $this->w, 0, 0, $originalWidth, $originalHeight, $originalWidth, $originalHeight);
return $canvas;
}
/**
* @param resource $canvas
* @param Image $image
*/
private function addReflection($canvas, Image $image)
{
$width = $image->getWidth();
$start = $image->getHeight();
$end = imagesy($canvas);
$imageResource = $image->getResource();
$range = $end - $start;
$opacityDiffPerLine = ($this->endTransparency - $this->startTransparency) / $range;
$opacity = $this->startTransparency;
for ($y = 0; $y < $range; ++$y, $opacity += $opacityDiffPerLine) {
$sourceLineIndex = $start - $y - 1;
$targetLineIndex = $start + $y;
for ($x = 0; $x < $width; ++$x) {
// found rgb in source image
$rgb = imagecolorsforindex($imageResource, imagecolorat($imageResource, $x, $sourceLineIndex));
// copy rgb from source image to canvas with opacity
$color = imagecolorallocatealpha($canvas, $rgb['red'], $rgb['green'], $rgb['blue'], round(127 * $opacity));
imagesetpixel($canvas, $x, $targetLineIndex, $color);
}
}
}
/**
* Send error image to output
*
* @param int $width
* @param int $height
*/
public function sendErrorImage($width, $height)
{
if ($this->showErrorImage) {
Image::errorImage($width, $height);
}
}
/**
* @param Image $image
* @param Coords $coords
*/
public function addImage(Image $image, Coords $coords)
{
imagecopy($this->resource, $image->getResource(), $coords->getX(), $coords->getY(), 0, 0, $image->getWidth(), $image->getHeight());
}
/**
* @param Image $image
* @param AddTextParams $params
* @param string $text
* @param int $placeWidth
*/
private function renderLine(Image $image, AddTextParams $params, $text, $placeWidth)
{
$leftPadding = $this->getLeftPadding($params, $text, $placeWidth);
// velikost radku je 30, velikost pisma je 16, takze bude 7px nad a pod textem
$space = round(($params->lineHeight - $params->size) / 2);
imagettftext($image->getResource(), $params->size, 0, $this->lastCoords->getX() + $leftPadding, $this->lastCoords->getY() + $params->lineHeight - $space, $params->color, $params->fontFile, $text);
$this->lastCoords->addY($params->lineHeight);
}
