/**
* Draw a line on the image, returns the GD-handle
*
* @param GD image resource $handle Image to work on
* @param Zend_Image_Action_DrawLine $lineObject The object containing all settings needed for drawing a line.
* @return void
*/
public function perform(Zend_Image_Adapter_Gd $adapter, Zend_Image_Action_DrawLine $lineObject)
{
$handle = $adapter->getHandle();
$strokeColor = $lineObject->getStrokeColor();
$color = $strokeColor->getRgb();
$colorAlphaAlloc = imagecolorallocatealpha($handle, $color['red'], $color['green'], $color['blue'], $lineObject->getStrokeAlpha());
if ($lineObject->getStrokeWidth() == 1) {
// Simple line
imageline($handle, $lineObject->getPointStart()->getX(), $lineObject->getPointStart()->getY(), $lineObject->getPointEnd()->getX(), $lineObject->getPointEnd()->getY(), $colorAlphaAlloc);
} elseif ($lineObject->getPointStart()->getX() == $lineObject->getPointEnd()->getX() || $lineObject->getPointStart()->getY() == $lineObject->getPointEnd()->getY()) {
// Simple thick line
$x1 = round(min($lineObject->getPointStart()->getX(), $lineObject->getPointEnd()->getX()) - ($lineObject->getStrokeWidth() / 2 - 0.5));
$y1 = round(min($lineObject->getPointStart()->getY(), $lineObject->getPointEnd()->getY()) - ($lineObject->getStrokeWidth() / 2 - 0.5));
$x2 = round(max($lineObject->getPointStart()->getX(), $lineObject->getPointEnd()->getX()) + ($lineObject->getStrokeWidth() / 2 - 0.5));
$y2 = round(max($lineObject->getPointStart()->getY(), $lineObject->getPointEnd()->getY()) + ($lineObject->getStrokeWidth() / 2 - 0.5));
if ($lineObject->isFilled()) {
imagefilledrectangle($handle, $x1, $y1, $x2, $y2, $colorAlphaAlloc);
} else {
imagerectangle($handle, $x1, $y1, $x2, $y2, $colorAlphaAlloc);
}
} else {
// Not horizontal nor vertical thick line
$polygonObject = new Zend_Image_Action_DrawPolygon();
$slope = ($lineObject->getPointEnd()->getY() - $lineObject->getPointStart()->getY()) / ($lineObject->getPointEnd()->getX() - $lineObject->getPointStart()->getX());
// y = ax + b
$a = ($lineObject->getStrokeWidth() / 2 - 0.5) / sqrt(1 + pow($slope, 2));
$points = array(new Zend_Image_Point(round($lineObject->getPointStart()->getX() - (1 + $slope) * $a), round($lineObject->getPointStart()->getY() + (1 - $slope) * $a)), new Zend_Image_Point(round($lineObject->getPointStart()->getX() - (1 - $slope) * $a), round($lineObject->getPointStart()->getY() - (1 + $slope) * $a)), new Zend_Image_Point(round($lineObject->getPointEnd()->getX() + (1 + $slope) * $a), round($lineObject->getPointEnd()->getY() - (1 - $slope) * $a)), new Zend_Image_Point(round($lineObject->getPointEnd()->getX() + (1 - $slope) * $a), round($lineObject->getPointEnd()->getY() + (1 + $slope) * $a)));
//Draw polygon
$polygonObject = new Zend_Image_Action_DrawPolygon(array('points' => $points, 'strokeColor' => $strokeColor));
$handler = new Zend_Image_Adapter_Gd_Action_DrawPolygon();
$handle = $handler->perform($adapter, $polygonObject);
}
return $handle;
}
public function perform(Zend_Image_Adapter_Gd $adapter, Zend_Image_Action_Rotate $rotate)
{
$handle = $adapter->getHandle();
// By default GD turns 'the wrong way
$angle = 360 - $rotate->getAngle();
$color = $rotate->getBackgroundColor()->getRgb();
$colorRes = imagecolorallocate($handle, $color['red'], $color['green'], $color['blue']);
return imagerotate($handle, $angle, $colorRes);
}
public function perform(Zend_Image_Adapter_Gd $adapter, Zend_Image_Action_Crop $crop)
{
$handle = $adapter->getHandle();
$targetWidth = $crop->getWidth();
$targetHeight = $crop->getHeight();
$im = imagecreatetruecolor($targetWidth, $targetHeight);
imagecopy($im, $adapter->getHandle(), 0, 0, $crop->getX(), $crop->getY(), $targetWidth, $targetHeight);
return $im;
}
/**
* Draws an arc on the handle
*
* @param GD-object $handle The handle on which the ellipse is drawn
* @param Zend_Image_Action_DrawEllipse $ellipseObject The object that with all info
*/
public function perform(Zend_Image_Adapter_Gd $adapter, Zend_Image_Action_DrawArc $arcObject)
{
$color = $arcObject->getFillColor()->getRgb();
$colorAlphaAlloc = imagecolorallocatealpha($adapter->getHandle(), $color['red'], $color['green'], $color['blue'], 127 - $arcObject->getFillAlpha() * 1.27);
if (!$arcObject->isFilled()) {
$style = IMG_ARC_NOFILL + IMG_ARC_EDGED;
} else {
$style = IMG_ARC_PIE;
}
$location = $arcObject->getLocation($adapter);
imagefilledarc($adapter->getHandle(), $location->getX(), $location->getY(), $arcObject->getWidth(), $arcObject->getHeight(), $arcObject->getCutoutStart() - 90, $arcObject->getCutoutEnd() - 90, $colorAlphaAlloc, $style);
}
/**
* Draws a polygon on the handle
*
* @param GD-object $handle The handle on which the polygon is drawn
* @param Zend_Image_Action_DrawPolygon $polygonObject The object that with all info
*/
public function perform(Zend_Image_Adapter_Gd $adapter, Zend_Image_Action_DrawPolygon $polygonObject) { // As of ZF2.0 / PHP5.3, this can be made static.
$handle = $adapter->getHandle();
$points = $this->_parsePoints($polygonObject->getPoints());
if(($pattern = $polygonObject->getStrokeDashPattern())!== null) {
$color = imagecolorallocate($handle, 0, 255, 0);
$array = array();
foreach($pattern as $amountOfPixels) {
$array = array_merge($array, array_fill(0, $amountOfPixels, $color));
$array = array_merge($array, array_fill(0, $polygonObject->getStrokeDashOffset(), IMG_COLOR_TRANSPARENT));
}
if(count($array) > 0) {
imagesetstyle($handle, $array);
}
}
if($polygonObject->isFilled()) {
//@TODO: extract this to Zend_Image_Adapter_Gd_Action_ActionAbstract ?
$color = $polygonObject->getFillColor()->getRgb();
$colorRes = imagecolorallocatealpha($handle,
$color['red'],
$color['green'],
$color['blue'],
$polygonObject->getFillAlpha());
imagefilledpolygon($handle, $points, count($points)/2, $colorRes);
}
$points = $polygonObject->getPoints();
$start = current($points);;
$line = new Zend_Image_Action_DrawLine();
while(current($points)!==false) {
$from = current($points);
$to = next($points);
if($to===false) {
if(!$polygonObject->isClosed()) {
break;
} else {
$to = $start;
}
}
$line->from($from);
$line->to($to);
$line->perform($adapter);
}
}
public function perform(Zend_Image_Adapter_Gd $adapter, Zend_Image_Action_Resize $resize)
{
$handle = $adapter->getHandle();
$newY = $resize->getYAmountCalculated();
$newX = $resize->getXAmountCalculated();
//if a dimension is 0, resize is proportionate to other dimension
//if proportions are constrained and both dimensions are specified,
//ImageMagick uses the smallest to constrain
//
//Note the fit parameter only works if the image is being made SMALLER
//@TODO: implement constraints manually for images being made larger
$fit = false;
if ($resize->hasConstrainedProportions() && $newX > 0 && $newY > 0) {
$fit = true;
}
// $handle->resizeImage($newX, $newY, $resize->getFilter(), 1, $fit);
$newImg = imagecreatetruecolor($newX, $newY);
imagecopyresampled($newImg, $handle, 0, 0, 0, 0, $newX, $newY, $adapter->getWidth(), $adapter->getHeight());
return $newImg;
}
public function perform(Zend_Image_Adapter_Gd $adapter, Zend_Image_Action_Mirror $rotate)
{
$handle = $adapter->getHandle();
$sizeX = $adapter->getWidth();
$sizeY = $adapter->getHeight();
$successFlop = true;
if ($rotate->flop()) {
$handleNew = imagecreatetruecolor($sizeX, $sizeY);
$successFlop = imagecopyresampled($handleNew, $handle, 0, 0, $sizeX - 1, 0, $sizeX, $sizeY, 0 - $sizeX, $sizeY);
$handle = $handleNew;
}
$successFlip = true;
if ($rotate->flip()) {
$handleNew = imagecreatetruecolor($sizeX, $sizeY);
$successFlip = imagecopyresampled($handleNew, $handle, 0, 0, 0, $sizeY - 1, $sizeX, $sizeY, $sizeX, 0 - $sizeY);
$handle = $handleNew;
}
if (!$successFlop || !$successFlip) {
require_once 'Zend/Image/Exception';
throw new Zend_Image_Exception('Was not able to mirror image as specified');
}
return $handle;
}
