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  • Using ImageMagick to create an image from a PDF...efficiently

    - by bigsweater
    I'm using ImageMagick to create a tiny JPG thumbnail image of an already-uploaded PDF. The code works fine. It's a WordPress widget, though this isn't necessarily WordPress specific. I'm unfamiliar with ImageMagick, so I was hoping somebody could tell me if this looks terrible or isn't following some best practices of some sort, or if I'm risking crashing the server. My questions, specifically, are: Is that image cached, or does the server have to re-generate the image every time somebody views the page? If it isn't cached, what's the best way to make sure the server doesn't have to regenerate the thumbnail? I tried to create a separate folder (/thumbs) for ImageMagick to put all the images in, instead of cluttering up the WP upload folders with images of PDFs. It kept throwing a permission error, despite 777 permissions on the folder in my testing environment. Why? Do the source/destination directories have to be the same? Am I doing anything incorrectly/inefficiently here that needs to be improved? The whole widget is on Pastebin: http://pastebin.com/WnSTEDm7 Relevant code: <?php if ( $url ) { $pdf = $url; $info = pathinfo($pdf); $filename = basename($pdf,'.'.$info['extension']); $uploads = wp_upload_dir(); $file_path = str_replace( $uploads['baseurl'], $uploads['basedir'], $url ); $dest_path = str_replace( '.pdf', '.jpg', $file_path ); $dest_url = str_replace( '.pdf', '.jpg', $pdf ); exec("convert \"{$file_path}[0]\" -colorspace RGB -geometry 60 $dest_path"); ?> <div class="entry"> <div class="widgetImg"> <p><a href="<?php echo $url; ?>" title="<?php echo $filename; ?>"><?php echo "<img src='".$dest_url."' alt='".$filename."' class='blueBorder' />"; ?></a></p> </div> <div class="widgetText"> <?php echo wpautop( $desc ); ?> <p><a class="downloadLink" href="<?php echo $url; ?>" title="<?php echo $filename; ?>">Download</a></p> </div> </div> <?php } ?> As you can see, the widget grabs whatever PDF is attached to the current page being viewed, creates an image of the first page of the PDF, stores it, then links to it in HTML. Thanks for any and all help!

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  • Add image silverlight hovereffect from codebehind

    - by Jakob
    Hi I have a stackpanel that has a dynamic amount of images that are added programatically, Is there a way I can set a hover/click effect programatically on these images. I would like for the image to "glow" when clicked. How do i do that in silverlight? I've noticed the Image.Effect property, but I'm not really sure how to use it.

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  • Trying to draw an image to a form, but not refreshing

    - by flavour404
    Hi, We are using graphics context of a form to draw an image. However it works fine on initial paint but the image is not being updated unless we set a breakpoint and run it in debug mode, stepping through each time. What is a good way of making a seperate thread to paint on to a form every second? Thanks.

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  • Image Handler for Sharepoint Not Working

    - by Peter
    My ImageHandler.ashx is not working when the webpart is calling it. any ideas on what is the correct way on calling or adding a handler in sharepoint? Thanks in advance Here My ImageHandler.ashx code byte[] buffer = (byte[])image.ImageData; context.Response.ContentType = "image/jpeg"; context.Response.OutputStream.Write(buffer, 0, buffer.Length); In my webpart imgcontrol.ImageUrl = "ImageHandler.aspx?id=1";

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  • Changing image domain / path in css for production?

    - by Neil
    Currently, for things like background images, our css files have no domain specified. This works both in our development and production environments. background-image: url(/images/bg.png); For performance reasons (cookie-less domain), we'd like to switch this: background-image: url(http://staticimagedomain.com/images/bg.png); Ideally, we don't hard code those, so our development environments can still pull locally. Any thoughts on how to best achieve this?

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  • How to rewrite image/<text>-<imageID>-<text> to image/ID.jpg ???

    - by SilverRuby
    HI, I used to have PHP websites and using url rewriting on picture to have SEO friendly urls, On php I had links like /image/blablablabla-1234-blablabla rewriting to: /image/1234.jpg by using a url rewrite rule on apache .htaccess file. Now I totally switched to ruby on rails and I would like to know what is the best way to do that on RoR? I am hosting websites on apache with passenger. Thanks in advance

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  • creating an insert image button in an acrobat 9 form

    - by Ross
    Hi, I am creating a pdf form in acrobat 9 pro, I would like to add a button so the user can insert an image from their machine. I have been give a pdf where this is possible. How can I create an insert image field in my form? Is this possibly a livecycle or windows feature? I am on osx

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  • Selecte and retrieve file path to image using dialog box

    - by Steven
    I'm expanding Wordpress to function more like a CMS. This includes relating image to a post. Currently I have a text field where I paste an image path. Now I want to click a button which opens a dialog box, then I navigate to the right folder and select a file to "open" (from server side). The file path is returned. How can I go about accomplishing this?

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  • Hover only on non-transparent part of image

    - by Nirmal
    Is there any way to make only a non-transparent portion of an image to trigger mouse-over event? If the mouse travels to the transparent area, the mouse-out should be triggered and the script should listen for any mouse-over event on a layer underneath the image. Is it possible? Thanks for any input.

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  • Loading an image sequence in InterfaceBuilder -ObjectiveC

    - by eco_bach
    Hi Using Actionscript and or in the Flash IDE you can either instantiate bitmaps from the library, or simply import bitmaps into the timeline of a MovieClip to create an image sequence. How would you do the same thing in InterfaceBuilder and-or using ObjectiveC? Do I need to create a new view for each and every image?

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  • upload a image and insert directly into CKEditor

    - by Timmeh
    I'd like to create the same kind of function tumblr has for uploading images and then inserting them directly into the WYSIWYG editor. I was planning on using uploadify to upload the image, then I am not sure of the method for inserting into the CKEditor. Has anyone done anything similar or know of a plugin that could do this? Ideally I'd like it to insert the image wherever the text cursor was last placed. Thanks in advance, Tim

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  • VS Express - accessing image added to project folder

    - by Petr
    Hi, I would like to know following: I added the folder "Graphics" into my project and placed one BMP to it. Now I would like to load the image from my code, but I cannot figure out how. I know its simple with resources but is there a way without adding the image into resources? Thanks

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  • Use ImageMagick to place an image inside a larger canvas

    - by Mike
    Getting started with ImageMagic and trying to find a way to do this... If an image is less than 50 pixels tall or 50 pixels wide, I'd like to place it (un-scaled) in the horizontal/vertical center of a new 50x50 pixel canvas on top of a white background - and save that as the new image. Anyone know if this is possible with ImageMagick? Thanks!

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  • DiskArbitration image Disk (dmg)

    - by Nyxem
    Hello, I have a problem using DiskArbitration framework, to catch disk image mounting I register for DARegisterDiskMountApprovalCallback The problem is that each time a disk image is mounted the callback is called twice. Why is that and how can I solve this ? Thanks.

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  • read image from database with ajax

    - by ama
    Im trying to read image from database with javascript ajax, but i could not read the xmlhttp.responseText to the img src ,the image is saved as binary data in database, and also retrived as binary data .can any one show me how to do that?

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