dw_posrel.js

javascirpt的绘图脚本 包括dw_clip.js

/*
		dw_posrel.js
		contains posRel method for dynObj
		adapted from cross-browser.com - Mike Foster

		This code is from Dynamic Web Coding 
    at http://www.dyn-web.com/
    See Terms of Use at http://www.dyn-web.com/bus/terms.html
    Permission granted to use this code 
    as long as this entire notice is included.		
*/

// position layer in window or containing layer
dynObj.prototype.posRel = function(loc,mar,container) {
	if (!container) {
		cWd = getWinWidth();
		cHt = getWinHeight();
	} else {
		cWd = container.width;
		cHt = container.height;
	}	
	switch (loc) {
		case "nw" :
			x = mar; y = mar;
			break;			
		case "n":
			x = Math.round((cWd-this.width)/2);
			y = mar;
		break;
		case "ne"	:
			x = cWd-this.width-mar;
			y = mar;
		break;
		case "w"	:
			x = mar;
			y = Math.round((cHt-this.height)/2);
		break;
		case "c" :
			x = Math.round((cWd-this.width)/2);
			y = Math.round((cHt-this.height)/2);			
			break;
		case "e" :
			x = cWd-this.width-mar;
			y = Math.round((cHt-this.height)/2);			
		break;
		case "sw"	:
			x = mar; 
			y = cHt-this.height-mar;
		break;
		case "s"	:
			x = Math.round((cWd-this.width)/2);
			y = cHt-this.height-mar;
		break;
		case "se"	:
			x = cWd-this.width-mar;
			y = cHt-this.height-mar;			
		break;
		default	:
			alert("Wrong position chosen!")
		break;
	}
		this.leftPos = x;
		this.topPos = y;
}