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<?php |
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namespace League\CLImate\TerminalObject\Dynamic\Animation; |
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use League\CLImate\Decorator\Parser\ParserImporter; |
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use League\CLImate\TerminalObject\Helper\StringLength; |
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use League\CLImate\Util\UtilImporter; |
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class Keyframe |
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{ |
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use StringLength, ParserImporter, UtilImporter; |
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/** |
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* Get the enter keyframes for the desired direction |
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* |
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* @param array $lines |
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* @param string $direction |
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* |
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* @return array |
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*/ |
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public function enterFrom($lines, $direction) |
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{ |
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return array_reverse($this->exitTo($lines, $direction)); |
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} |
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/** |
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* Get the exit keyframes for the desired direction |
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* |
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* @param array $lines |
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* @param string $direction |
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* |
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* @return array |
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*/ |
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public function exitTo($lines, $direction) |
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{ |
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$lines = $this->adjustLines($lines, $direction); |
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$line_method = $this->getLineMethod($direction); |
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$direction_keyframes = $this->getDirectionFrames($direction, $lines, $line_method); |
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$keyframes = array_fill(0, 4, $lines); |
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$keyframes = array_merge($keyframes, $direction_keyframes); |
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$keyframes[] = array_fill(0, count($lines), ''); |
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return $keyframes; |
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} |
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/** |
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* Get scroll keyframes |
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* |
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* @param array $lines |
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* @param string $enter_from |
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* @param string $exit_to |
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* |
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* @return array |
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*/ |
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public function scroll($lines, $enter_from, $exit_to) |
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{ |
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$keyframes = $this->enterFrom($lines, $enter_from); |
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$keyframes = array_merge($keyframes, $this->exitTo($lines, $exit_to)); |
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$keyframes = array_unique($keyframes, SORT_REGULAR); |
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$keyframes[] = reset($keyframes); |
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return $keyframes; |
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} |
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/** |
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* Get the line parser for the direction |
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* |
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* @param string $direction |
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* @return string |
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*/ |
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protected function getLineMethod($direction) |
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{ |
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return 'current' . ucwords(strtolower($direction)) . 'Line'; |
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} |
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/** |
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* Adjust the array of lines if necessary |
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* |
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* @param array $lines |
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* @param string $direction |
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* |
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* @return array |
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*/ |
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protected function adjustLines(array $lines, $direction) |
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{ |
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$adjust_method = 'adjust' . ucwords(strtolower($direction)) . 'Lines'; |
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if (method_exists($this, $adjust_method)) { |
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return $this->$adjust_method($lines); |
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} |
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return $lines; |
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} |
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/** |
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* Pad the array of lines for "right" animation |
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* |
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* @param array $lines |
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* @return array |
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*/ |
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protected function adjustRightLines(array $lines) |
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{ |
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return $this->padArray($lines, $this->util->width()); |
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} |
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/** |
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* Pad the array of lines for "left" animation |
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* |
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* @param array $lines |
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* @return array |
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*/ |
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protected function adjustLeftLines(array $lines) |
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{ |
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return $this->padArray($lines, $this->maxStrLen($lines)); |
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} |
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/** |
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* Get the keyframes appropriate for the animation direction |
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* |
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* @param string $direction |
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* @param array $lines |
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* @param string $line_method |
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* |
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* @return array |
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*/ |
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protected function getDirectionFrames($direction, array $lines, $line_method) |
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{ |
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$mapping = [ |
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'exitHorizontalFrames' => ['left', 'right'], |
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'exitVerticalFrames' => ['top', 'bottom'], |
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]; |
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foreach ($mapping as $method => $directions) { |
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if (in_array($direction, $directions)) { |
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return $this->$method($lines, $line_method); |
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} |
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} |
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// Fail gracefully, simply return an array |
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return []; |
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} |
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/** |
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* Create horizontal exit animation keyframes for the art |
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* |
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* @param array $lines |
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* @param string $line_method |
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* |
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* @return array |
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*/ |
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protected function exitHorizontalFrames(array $lines, $line_method) |
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{ |
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$keyframes = []; |
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$length = mb_strlen($lines[0]); |
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for ($i = $length; $i > 0; $i--) { |
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$keyframes[] = $this->getHorizontalKeyframe($lines, $i, $line_method, $length); |
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} |
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return $keyframes; |
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} |
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/** |
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* Get the keyframe for a horizontal animation |
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* |
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* @param array $lines |
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* @param int $frame_number |
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* @param string $line_method |
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* @param int $length |
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* |
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* @return array |
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*/ |
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protected function getHorizontalKeyframe(array $lines, $frame_number, $line_method, $length) |
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{ |
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$keyframe = []; |
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foreach ($lines as $line) { |
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$keyframe[] = $this->$line_method($line, $frame_number, $length); |
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} |
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return $keyframe; |
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} |
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/** |
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* Create vertical exit animation keyframes for the art |
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* |
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* @param array $lines |
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* @param string $line_method |
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* |
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* @return array |
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*/ |
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protected function exitVerticalFrames(array $lines, $line_method) |
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{ |
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$keyframes = []; |
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$line_count = count($lines); |
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for ($i = $line_count - 1; $i >= 0; $i--) { |
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$keyframes[] = $this->$line_method($lines, $line_count, $i); |
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} |
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return $keyframes; |
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} |
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/** |
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* Get the current line as it is exiting left |
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* |
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* @param string $line |
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* @param int $frame_number |
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* |
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* @return string |
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*/ |
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protected function currentLeftLine($line, $frame_number) |
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{ |
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return mb_substr($line, -$frame_number); |
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} |
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/** |
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* Get the current line as it is exiting right |
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* |
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* @param string $line |
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* @param int $frame_number |
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* @param int $length |
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* |
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* @return string |
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*/ |
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protected function currentRightLine($line, $frame_number, $length) |
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{ |
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return str_repeat(' ', $length - $frame_number) . mb_substr($line, 0, $frame_number); |
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} |
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/** |
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* Slice off X number of lines from the bottom and fill the rest with empty strings |
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* |
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* @param array $lines |
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* @param integer $total_lines |
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* @param integer $current |
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* |
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* @return array |
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*/ |
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protected function currentTopLine($lines, $total_lines, $current) |
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{ |
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$keyframe = array_slice($lines, -$current, $current); |
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return array_merge($keyframe, array_fill(0, $total_lines - $current, '')); |
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} |
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/** |
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* Slice off X number of lines from the top and fill the rest with empty strings |
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* |
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* @param array $lines |
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* @param integer $total_lines |
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* @param integer $current |
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* |
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* @return array |
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*/ |
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protected function currentBottomLine($lines, $total_lines, $current) |
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{ |
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$keyframe = array_fill(0, $total_lines - $current, ''); |
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return array_merge($keyframe, array_slice($lines, 0, $current)); |
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} |
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} |
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