Sep 10, To create a simple border, use the cfimage tag. . by changing its dimensions, enforce uniform sizes on images, and create thumbnail images. cfimage. Creates a ColdFusion image that can be manipulated by using image functions. You can use the cfimage tag to perform common image manipulation. cfimage source=”#myImage#” action=”write” destination=”” overwrite=”yes”> thumbnail image.
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But in all three releases, the value for each again defaults to “highestquality”. Add a red border of 5 pixels to an image, write the output to a variable. Then you can create several clones and manipulate them in memory before writing tuumbnail to files.
To improve performance at the cost of image qualitychange the interpolation method. The following are the valid values:.
Border thumbail in pixels. Duplicating an image can improve processing time because you retrieve image data from a database or a file once to create the ColdFusion image. Also, you can set the blur factor for the image. You can perform a few common manipulation operations on ColdFusion images. To ensure that the resized image is proportional, specify a value for the height or width and enter a blank value for the other dimension: This was another reason we switched to OpenImage as we got tired of informing graphic designers that their images were in the “wrong format.
It’s the 4th arg in both imageResize and imageScaleToFit. For a hexadecimal value, use the form ” xxxxxx” or “xxxxxx”. When you resize an image, if you specify a value for cvimage height, you can let ColdFusion calculate the aspect ratio by specifying “” as the width.
ColdFusion supports the following default image formats on Macintosh, Windows, and Unix operating systems: Are you still running CF11? We didn’t have any control over the dimensions of the JPG images that were uploaded.
Creating ColdFusion images
The following example resizes the image so that the width is exactly pixels and the height of the image is proportional to the width: You can control the thickness of the border and its color. If you may be tempted to check it out, please do report back what you find.
Sign up or log in Sign up using Google. The blur factor used for resampling. As for your first paragraph, I acknowledged in the entry that there could be a tradeoff between performance and quality, but I pointed out as well that many folks find there to be none at all, and that the highestperformance or any of the options between that and highestquality.
Valid values are fractions that range from 0 through 1 the lower the number, the lower the quality.
imageResize Code Examples and CFML Documentation
Poor image quality with highest performance. But really, you ought to read the rest of this entry to understand what’s being proposed. You can reset a drawing control as many times as necessary within an image to achieve the desired effect. I figured out the issue.
The drawing attributes you specified are applied to the oval. The following example creates a ColdFusion image variable named “myImage” from the jeff But I’ll understand that you may not be interested in changing code that you have now using the custom tag.
You can specify both. Create the directories in the path before you specify the file. I had not noticed it that the cfimgae matrix said only jdk Cdimage border, resize, and rotate options require a name tyumbnail or a destination attribute. Of course I welcome and encourage followup and feedback here on this particular problem.
Specifying it as “highestperformance” or some value between the two again may have a noticeable effect on improving performance without much loss of image quality. ColdFusion supports the following default image formats on Macintosh, Windows, and Unix operating systems:. What am I doing wrong? For example, you could create a thumbnail version, a grayscale version, and an enlarged version of an image uploaded to a server.
One use for a watermark is for protecting copyrighted images. For more information on file formats, see the section Supported image file formats. Otherwise, ColdFusion generates an error:. The following example shows how to specify a ColdFusion image variable as the source:.
image – Creating Thumbnails with CFImage Aborting Because of Server Load? – Stack Overflow
Use capital letters for better readability. Valid values are fractions that range from 0 through 1 the lower the number, the lower the quality. Parameters Parameter Description image Required. Folks may be interested in my blog post here – http: Manipulating ColdFusion images Search.
The following table describes the algorithms and their named equivalents based on average test results:. You can use the cfimage tag to perform common image manipulation operations as a shortcut to Image functions. You can use blank images as canvasses for drawing functions in ColdFusion.
The following example shows how to create an image with several drawing objects: Separate multiple fonts with commas.