Creates a ColdFusion image.
A ColdFusion image.
ImageNew([source
,width
,height
,imageType
,canvasColor
])
cfimage, ImageCopy, ImageRead, ImageReadBase64, ImageSetDrawingColor, IsImageFile
ColdFusion 8: Added this function.
Parameter |
Description |
---|---|
source |
Optional. The source image pathname, URL, a ColdFusion variable that is read into the new ColdFusion image, or a Java buffered image. |
width |
Optional. The width of the new ColdFusion image. Valid when the height is specified and the source is not. |
height |
Optional. The height of the new ColdFusion image. Valid when the width is specified and the source is not. |
imageType |
Optional. The type of the ColdFusion image to create:
Valid only when width and height are specified. |
canvasColor |
Optional. Color of the image canvas:
|
You can pass the ImageNew function any of the following parameters:
ColdFusion generates an error when the passed attributes cannot create a valid ColdFusion image.
The ImageNew function and the cfimage read action support the SQL Server Image Column data type.
To read Base64 images, use the ImageReadBase64 function.
If the color value is a string, specify a supported named color; see the name list in Valid HTML named colors. For a hexadecimal value, use the form "##xxxxxx" or "xxxxxx", where x = 0-9 or A-F; use two number signs or none.
Example 1 <!--- Use the ImageNew function to create a 200x200-pixel image in ARGB format. ---> <cfset myImage = ImageNew("",200,200,"argb")> <cfimage action="writeTobrowser" source="#myImage#">
Example 2
<!--- This example shows how to create a ColdFusion image from a BLOB in a database. ---> <cfquery name="GetBLOBs" datasource="myblobdata"> SELECT LastName,Photo FROM Employees </cfquery> <cfset i = 0> <table border=1> <cfoutput query="GetBLOBS"> <tr> <td> #LastName# </td> <td> <cfset i = i+1> <cfset myImage=ImageNew("#GetBLOBS.Photo#")> <cfset ImageWrite(myImage,"photo#i#.png")> </td> </tr> </cfoutput> </table>
Example 3
<!--- This example shows how to create a ColdFusion image from a URL. ---> <cfset myImage = ImageNew("http://www.google.com/images/logo_sm.gif")> <cfset ImageWrite(myImage,"google_via_imagenew.png")> <img src="google_via_imagenew.png">
Example 4
<!--- This example shows how to use the cffile tag to convert an image file to binary format and pass it as a variable to the ImageNew function. ---> <!---Use the cffile tag to read an image file, convert it to binary format, and write the result to a variable. ---> <cffile action = "readBinary" file = apple.jpg" variable = "aBinaryObj"> <!--- Use the ImageNew function to create a ColdFusion image from the variable. ---> <cfset myImage = ImageNew(aBinaryObj)>
Example 5
<!--- This example shows how to use the cffile tag to write a ColdFusion image to a file. ---> <!--- Use the ImageNew function to create a ColdFusion image from a JPEG file. ---> <cfset myImage = ImageNew("../cfdocs/images/artgallery/aiden01.jpg")> <!--- Turn on antialiasing to improve image quality. ---> <cfset ImageSetAntialiasing(myImage,"on")> <!--- Resize the image. ---> <cfset ImageResize(myImage,"50%","")> <!--- Pass the image object to the cffile tag and write the result to a file on the local drive. ---> <cffile file="#myImage#" action="write" output="c:\test_myImage.jpg"> <cfimage action="writeToBrowser" source="#myImage#">
Example 6
<!--- This example uses cfscript to pass a Java buffered image to the ImageNew function. ---> <cfscript> bufferedImage = createObject("java", "java.awt.image.BufferedImage"); bufferedImage.init(JavaCast("int", 100), JavaCast("int", 100), BufferedImage.TYPE_4BYTE_ABGR); myImage = imageNew(bufferedImage); </cfscript>