image.cfc

开源的HTML文本编辑器

	<cfscript>
		// initialize the posterize filter
		variables.posterizeFilter.init(arguments.amount);

		destImage = variables.posterizeFilter.filter(srcImage);


		if (outputFile eq "")
		{
			// return the image object
			retVal.img = destImage;
			return retVal;
		} else {
			// write the image object to the specified file.
			saveImage = writeImage(outputFile, destImage, jpegCompression);
			if (saveImage.errorCode gt 0)
			{
				return saveImage;
			} else {
				return retVal;
			}
		}
	</cfscript>
</cffunction>


<cffunction name="addText" access="public" output="true" returntype="struct" hint="Add text to an image.">
	<cfargument name="objImage" required="yes" type="Any">
	<cfargument name="inputFile" required="yes" type="string">
	<cfargument name="outputFile" required="yes" type="string">
	<cfargument name="x" required="yes" type="numeric">
	<cfargument name="y" required="yes" type="numeric">
	<cfargument name="fontDetails" required="yes" type="struct">
	<cfargument name="content" required="yes" type="String">
	<cfargument name="jpegCompression" required="no" type="numeric" default="#variables.defaultJpegCompression#">

	<cfset var retVal = StructNew()>
	<cfset var loadImage = StructNew()>
	<cfset var img = "">
	<cfset var saveImage = StructNew()>
	<cfset var g2d = "">
	<cfset var bgImage = "">
	<cfset var fontImage = "">
	<cfset var overlayImage = "">
	<cfset var Color = "">
	<cfset var font = "">
	<cfset var font_stream = "">
	<cfset var ac = "">
	<cfset var rgb = "">

	<cfset retVal.errorCode = 0>
	<cfset retVal.errorMessage = "">

	<cfparam name="arguments.fontDetails.size" default="12">
	<cfparam name="arguments.fontDetails.color" default="black">
	<cfparam name="arguments.fontDetails.fontFile" default="">
	<cfparam name="arguments.fontDetails.fontName" default="serif">

	<cfif arguments.fontDetails.fontFile neq "" and not fileExists(arguments.fontDetails.fontFile)>
		<cfset retVal = throw("The specified font file #Chr(34)##arguments.inputFile##Chr(34)# could not be found on the server.")>
		<cfreturn retVal>
	</cfif>
	<cftry>
		<cfset rgb = getRGB(arguments.fontDetails.color)>
		<cfcatch type="any">
			<cfset retVal = throw("Invalid color #Chr(34)##arguments.fontDetails.color##Chr(34)#")>
			<cfreturn retVal>
		</cfcatch>
	</cftry>
	<cfif inputFile neq "">
		<cfset loadImage = readImage(inputFile, "NO")>
		<cfif loadImage.errorCode is 0>
			<cfset img = loadImage.img>
		<cfelse>
			<cfset retVal = throw(loadImage.errorMessage)>
			<cfreturn retVal>
		</cfif>
	<cfelse>
		<cfset img = objImage>
	</cfif>
	<cfif img.getType() eq 0>
		<cfset img = convertImageObject(img,img.TYPE_3BYTE_BGR)>
	</cfif>
	<cfscript>
		// load objects
		bgImage = CreateObject("java", "java.awt.image.BufferedImage");
		fontImage = CreateObject("java", "java.awt.image.BufferedImage");
		overlayImage = CreateObject("java", "java.awt.image.BufferedImage");
		Color = CreateObject("java","java.awt.Color");
		font = createObject("java","java.awt.Font");
		font_stream = createObject("java","java.io.FileInputStream");
		ac = CreateObject("Java", "java.awt.AlphaComposite");

		// set up basic needs
		fontColor = Color.init(javacast("int", rgb.red), javacast("int", rgb.green), javacast("int", rgb.blue));

		if (fontDetails.fontFile neq "")
		{
			font_stream.init(arguments.fontDetails.fontFile);
			font = font.createFont(font.TRUETYPE_FONT, font_stream);
			font = font.deriveFont(javacast("float",arguments.fontDetails.size));
		} else {
			font.init(fontDetails.fontName, evaluate(fontDetails.style), fontDetails.size);
		}
		// get font metrics using a 1x1 bufferedImage
		fontImage.init(1,1,img.getType());
		g2 = fontImage.createGraphics();
		g2.setRenderingHints(getRenderingHints());
		fc = g2.getFontRenderContext();
		bounds = font.getStringBounds(content,fc);

		g2 = img.createGraphics();
		g2.setRenderingHints(getRenderingHints());
		g2.setFont(font);
		g2.setColor(fontColor);
		// in case you want to change the alpha
		// g2.setComposite(ac.getInstance(ac.SRC_OVER, 0.50));

		// the location (arguments.fontDetails.size+y) doesn't really work
		// the way I want it to.
		g2.drawString(content,javacast("int",x),javacast("int",arguments.fontDetails.size+y));

		if (outputFile eq "")
		{
			retVal.img = img;
			return retVal;
		} else {
			saveImage = writeImage(outputFile, img, jpegCompression);
			if (saveImage.errorCode gt 0)
			{
				return saveImage;
			} else {
				return retVal;
			}
		}
	</cfscript>
</cffunction>

<cffunction name="watermark" access="public" output="false">
	<cfargument name="objImage1" required="yes" type="Any">
	<cfargument name="objImage2" required="yes" type="Any">
	<cfargument name="inputFile1" required="yes" type="string">
	<cfargument name="inputFile2" required="yes" type="string">
	<cfargument name="alpha" required="yes" type="numeric">
	<cfargument name="placeAtX" required="yes" type="numeric">
	<cfargument name="placeAtY" required="yes" type="numeric">
	<cfargument name="outputFile" required="yes" type="string">
	<cfargument name="jpegCompression" required="no" type="numeric" default="#variables.defaultJpegCompression#">

	<cfset var retVal = StructNew()>
	<cfset var loadImage = StructNew()>
	<cfset var originalImage = "">
	<cfset var wmImage = "">
	<cfset var saveImage = StructNew()>
	<cfset var ac = "">
	<cfset var rh = getRenderingHints()>

	<cfset retVal.errorCode = 0>
	<cfset retVal.errorMessage = "">

	<cfif inputFile1 neq "">
		<cfset loadImage = readImage(inputFile1, "NO")>
		<cfif loadImage.errorCode is 0>
			<cfset originalImage = loadImage.img>
		<cfelse>
			<cfset retVal = throw(loadImage.errorMessage)>
			<cfreturn retVal>
		</cfif>
	<cfelse>
		<cfset originalImage = objImage1>
	</cfif>
	<cfif originalImage.getType() eq 0>
		<cfset originalImage = convertImageObject(originalImage,originalImage.TYPE_3BYTE_BGR)>
	</cfif>

	<cfif inputFile2 neq "">
		<cfset loadImage = readImage(inputFile2, "NO")>
		<cfif loadImage.errorCode is 0>
			<cfset wmImage = loadImage.img>
		<cfelse>
			<cfset retVal = throw(loadImage.errorMessage)>
			<cfreturn retVal>
		</cfif>
	<cfelse>
		<cfset wmImage = objImage2>
	</cfif>
	<cfif wmImage.getType() eq 0>
		<cfset wmImage = convertImageObject(wmImage,wmImage.TYPE_3BYTE_BGR)>
	</cfif>


	<cfscript>
		at = CreateObject("java", "java.awt.geom.AffineTransform");
		op = CreateObject("java", "java.awt.image.AffineTransformOp");
		ac = CreateObject("Java", "java.awt.AlphaComposite");
		gfx = originalImage.getGraphics();
		gfx.setComposite(ac.getInstance(ac.SRC_OVER, alpha));

		at.init();
		// op.init(at,op.TYPE_BILINEAR);
		op.init(at, rh);

		gfx.drawImage(wmImage, op, javaCast("int",arguments.placeAtX), javacast("int", arguments.placeAtY));

		gfx.dispose();

		if (outputFile eq "")
		{
			retVal.img = originalImage;
			return retVal;
		} else {
			saveImage = writeImage(outputFile, originalImage, jpegCompression);
			if (saveImage.errorCode gt 0)
			{
				return saveImage;
			} else {
				return retVal;
			}
		}
	</cfscript>
</cffunction>

<cffunction name="isURL" access="private" output="false" returnType="boolean">
	<cfargument name="stringToCheck" required="yes" type="string">
	<cfif REFindNoCase("^(((https?:)\/\/))[-[:alnum:]\?%,\.\/&##!@:=\+~_]+[A-Za-z0-9\/]$",stringToCheck) NEQ 0>
		<cfreturn true>
	<cfelse>
		<cfreturn false>
	</cfif>
</cffunction>

<!--- function returns RGB values in a structure for hex or the 16
	HTML named colors --->
<cffunction name="getRGB" access="private" output="true" returnType="struct">
	<cfargument name="color" type="string" required="yes">

	<cfset var retVal = structNew()>
	<cfset var cnt = 0>
	<cfset var namedColors = "aqua,black,blue,fuchsia,gray,green,lime,maroon,navy,olive,purple,red,silver,teal,white,yellow">
	<cfset var namedColorsHexValues = "00ffff,000000,0000ff,ff00ff,808080,008000,00ff00,800000,000080,808080,ff0000,c0c0c0,008080,ffffff,ffff00">

	<cfset retVal.red = 0>
	<cfset retVal.green = 0>
	<cfset retVal.blue = 0>

	<cfset arguments.color = trim(arguments.color)>
	<cfif len(arguments.color) is 0>
		<cfreturn retVal>
	<cfelseif listFind(namedColors, arguments.color) gt 0>
		<cfset arguments.color = listGetAt(namedColorsHexValues, listFind(namedColors, arguments.color))>
	</cfif>
	<cfif left(arguments.color,1) eq "##">
		<cfset arguments.color = right(arguments.color,len(arguments.color)-1)>
	</cfif>
	<cfif len(arguments.color) neq 6>
		<cfreturn retVal>
	<cfelse>
		<cftry>
			<cfset retVal.red = InputBaseN(mid(arguments.color,1,2),16)>
			<cfset retVal.green = InputBaseN(mid(arguments.color,3,2),16)>
			<cfset retVal.blue = InputBaseN(mid(arguments.color,5,2),16)>
			<cfcatch type="any">
				<cfset retVal.red = 0>
				<cfset retVal.green = 0>
				<cfset retVal.blue = 0>
				<cfreturn retVal>
			</cfcatch>
		</cftry>
	</cfif>
	<cfreturn retVal>
</cffunction>

<cffunction name="throw" access="private" output="false" returnType="struct">
	<cfargument name="detail" type="string" required="yes">
	<cfargument name="force" type="boolean" required="no" default="no">

	<cfset var retVal = StructNew()>

	<cfif variables.throwOnError or arguments.force>
		<cfthrow detail="#arguments.detail#" message="#arguments.detail#">
	<cfelse>
		<cfset retVal.errorCode = 1>
		<cfset retVal.errorMessage = arguments.detail>
		<cfreturn retVal>
	</cfif>
</cffunction>

<cffunction name="debugDump" access="private">
	<cfdump var="#arguments#"><cfabort>
</cffunction>

<cffunction name="convertImageObject" access="private" output="false" returnType="any">
	<cfargument name="bImage" type="Any" required="yes">
	<cfargument name="type" type="numeric" required="yes">

	<cfscript>
	// convert the image to a specified BufferedImage type and return it

	var width = bImage.getWidth();
	var height = bImage.getHeight();
	var newImage = createObject("java","java.awt.image.BufferedImage").init(javacast("int",width), javacast("int",height), javacast("int",type));
	// int[] rgbArray = new int[width*height];
	var rgbArray = variables.arrObj.newInstance(variables.intClass, javacast("int",width*height));

	bImage.getRGB(
		javacast("int",0),
		javacast("int",0),
		javacast("int",width),
		javacast("int",height),
		rgbArray,
		javacast("int",0),
		javacast("int",width)
		);
	newImage.setRGB(
		javacast("int",0),
		javacast("int",0),
		javacast("int",width),
		javacast("int",height),
		rgbArray,
		javacast("int",0),
		javacast("int",width)
		);
	return newImage;
	</cfscript>

</cffunction>

</cfcomponent>