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<?php |
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namespace SixtyNine\Cloud\Usher; |
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use Imagine\Image\Point; |
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use SixtyNine\Cloud\Drawer\Drawer; |
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use SixtyNine\Cloud\Factory\Logger; |
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use SixtyNine\Cloud\FontMetrics; |
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use SixtyNine\DataTypes\Box; |
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use SixtyNine\Cloud\Placer\PlacerInterface; |
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/** |
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* Responsible to find a place for the word in the cloud |
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*/ |
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class Usher |
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{ |
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const DEFAULT_MAX_TRIES = 100000; |
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/** @var int */ |
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protected $maxTries; |
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/** @var \SixtyNine\Cloud\Usher\MaskInterface */ |
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protected $mask; |
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/** @var \SixtyNine\Cloud\Placer\PlacerInterface */ |
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protected $placer; |
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/** @var \SixtyNine\Cloud\FontMetrics */ |
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protected $metrics; |
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/** @var Logger */ |
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protected $logger; |
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/** |
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* @param int $imgWidth |
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* @param int $imgHeight |
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* @param PlacerInterface $placer |
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* @param FontMetrics $metrics |
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* @param int $maxTries |
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*/ |
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public function __construct( |
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$imgWidth, |
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$imgHeight, |
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PlacerInterface $placer, |
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FontMetrics $metrics, |
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$maxTries = self::DEFAULT_MAX_TRIES |
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) { |
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$this->mask = new QuadTreeMask($imgWidth, $imgHeight); |
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$this->metrics = $metrics; |
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$this->imgHeight = $imgHeight; |
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$this->imgWidth = $imgWidth; |
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$this->maxTries = $maxTries; |
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$this->placer = $placer; |
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$this->logger = Logger::getInstance(); |
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} |
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/** |
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* @param string $word |
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* @param string $font |
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* @param int $fontSize |
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* @param int $angle |
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* @param bool $precise |
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* @return bool|Box |
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*/ |
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public function getPlace($word, $font, $fontSize, $angle, $precise = false) |
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{ |
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$this->logger->log( |
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sprintf( |
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'Search place for "%s", font = %s(%s), angle = %s', |
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$word, |
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str_replace('.ttf', '', $font), |
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$fontSize, |
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$angle |
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), |
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Logger::DEBUG |
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); |
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$bounds = new Box(0, 0, $this->imgWidth, $this->imgHeight); |
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$size = $this->metrics->calculateSize($word, $font, $fontSize); |
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$box = Drawer::getBoxForText(0, 0, $size->getWidth(), $size->getHeight(), $angle); |
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$this->logger->log(' Text dimensions: ' . $size->getDimensions(), Logger::DEBUG); |
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$place = $this->searchPlace($bounds, $box); |
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if (!$place) { |
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return false; |
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} |
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if ($precise) { |
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$this->addWordToMask($word, $place, $font, $fontSize, $angle); |
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return $place; |
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} |
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$this->mask->add(new Point(0, 0), $place); |
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return $place; |
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} |
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/** |
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* @param string $word |
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* @param Box $place |
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* @param string $font |
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* @param int $size |
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* @param int $angle |
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*/ |
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public function addWordToMask($word, Box $place, $font, $size, $angle) |
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{ |
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$base = $this->metrics->calculateSize($word, $font, $size, $angle); |
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foreach (str_split($word) as $letter) { |
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$box = $this->metrics->calculateSize($letter, $font, $size); |
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if ($angle === 0) { |
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$newPos = new Point($place->getX(), $place->getY() + ($base->getHeight() - $box->getHeight())); |
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$this->mask->add($newPos, $box, $angle); |
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$place = $place->move($box->getWidth(), 0); |
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continue; |
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} |
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// Invert width and height |
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$box = new Box(0, 0, $box->getHeight(), $box->getWidth()); |
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if ($place->getY() + ($base->getHeight() - $box->getHeight()) < 0) { |
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continue; |
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} |
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if ($place->getX() + ($base->getWidth() - $box->getWidth()) < 0) { |
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continue; |
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} |
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$newPos = new Point( |
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$place->getX() + ($base->getWidth() - $box->getWidth()), |
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$place->getY() + ($base->getHeight() - $box->getHeight()) |
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); |
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$this->mask->add($newPos, $box); |
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$place = $place->move(0, -$box->getHeight()); |
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} |
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} |
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/** |
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* Search a free place for a new box. |
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* @param \SixtyNine\DataTypes\Box $bounds |
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* @param \SixtyNine\DataTypes\Box $box |
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* @return bool|Box |
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*/ |
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protected function searchPlace(Box $bounds, Box $box) |
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{ |
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$this->logger->log(' Search place for ' . $box, Logger::DEBUG); |
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$placeFound = false; |
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$current = $this->placer->getFirstPlaceToTry(); |
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$curTry = 1; |
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$currentBox = null; |
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while (!$placeFound) { |
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if (!$current) { |
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return false; |
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} |
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if ($curTry > $this->maxTries) { |
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return false; |
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} |
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$currentBox = $box->move($current->getX(), $current->getY()); |
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$outOfBounds = !$currentBox->inside($bounds); |
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if (!$outOfBounds) { |
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$placeFound = !$this->mask->overlaps($currentBox); |
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$placeFound = $placeFound && !$outOfBounds; |
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} |
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$this->logger->log(sprintf( |
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' Trying %s --> %s', |
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$currentBox, |
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$outOfBounds ? 'Out of bounds' : ($placeFound ? 'OK' : 'Collision') |
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), Logger::DEBUG); |
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if ($placeFound) { |
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break; |
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} |
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$current = $this->placer->getNextPlaceToTry($current); |
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$curTry++; |
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} |
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return $currentBox->inside($bounds) ? $currentBox : false; |
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} |
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/** |
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* @return MaskInterface |
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*/ |
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public function getMask() |
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{ |
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return $this->mask; |
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} |
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} |
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sixty-nine /
php-cloud-lib
Loading history...
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: