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PhutilSprite.php
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			<?php

			/**
			* NOTE: This is very new and unstable.
			*/
			final class PhutilSprite extends Phobject {

			private $sourceFiles = array();
			private $sourceX;
			private $sourceY;
			private $sourceW;
			private $sourceH;
			private $targetCSS;
			private $spriteSheet;
			private $name;

			public function setName($name) {
			$this->name = $name;
			return $this;
			}

			public function getName() {
			return $this->name;
			}

			public function setTargetCSS($target_css) {
			$this->targetCSS = $target_css;
			return $this;
			}

			public function getTargetCSS() {
			return $this->targetCSS;
			}

			public function setSourcePosition($x, $y) {
			$this->sourceX = $x;
			$this->sourceY = $y;
			return $this;
			}

			public function setSourceSize($w, $h) {
			$this->sourceW = $w;
			$this->sourceH = $h;
			return $this;
			}

			public function getSourceH() {
			return $this->sourceH;
			}

			public function getSourceW() {
			return $this->sourceW;
			}

			public function getSourceY() {
			return $this->sourceY;
			}

			public function getSourceX() {
			return $this->sourceX;
			}

			public function setSourceFile($source_file, $scale = 1) {
			$this->sourceFiles[$scale] = $source_file;
			return $this;
			}

			public function getSourceFile($scale) {
			if (empty($this->sourceFiles[$scale])) {
			throw new Exception(pht("No source file for scale '%s'!", $scale));
			}

			return $this->sourceFiles[$scale];
			}

			}