Drupal example source code file (README.txt)
The README.txt Drupal example source code
ImageCache is a dynamic image manipulation and cache tool. It allows you to create a namespace that corresponds to a set of image manipulation actions. It generates a derivative image the first time it is requested from a namespace until the namespace or the entire imagecache is flushed. Getting Started: 1. Upload and enable both the ImageCache and ImageCache UI modules. 2. Go to Administer -> Site Building -> ImageCache. Click on the local task tab labeled "Add New Preset" to build a new set of image manipulation actions. 3. Enter a descriptive name of your choice (e.g. 'product_thumbnail') into the "Preset Namespace" box and click "Create New Preset". 4. Add actions to your preset that tell ImageCache how to manipulate the original image when it is rendered for display. Available actions include crop, scale, desaturate (grey scale), resize, and rotate. Multiple actions may be added to a preset. 5. Each action is configured in its own form, and the actions may be reordered from the preset's configuration form. If you need to make any changes to the order of actions in a preset, remember to click "Update Preset" when you're finished. Viewing Manipulated Images: Your modified image can be viewed by visiting a URL in this format: http://example.com/files/imagecache/preset-name/files/image-name.jpg For example, if your preset is named 'product_thumbnail' and your image is named 'green-widget.jpg', you could view your modified image at: http://example.com/files/imagecache/product_thumbnail/files/green-widget... NOTE: Each role that wishes to view the images generated by a particular preset must be given permission on the admin/user/permissions page. ImageCache also defines a theme function that you can use in your modules and themes to automatically display a manipulated image. For example, to use the theme function in a .tpl.php file, add the following line where you would like the image to appear: <?php print theme('imagecache', 'preset_namespace', $image_filepath, $alt, $title, $attributes); ?> Change 'preset_namespace' to the name of your imagecache preset and make sure that $image_filepath or some other variable contains the actual filepath to the image you would like to display. $alt, $title and $attributes are optional parameters that specify ALT/TITLE text for the image element in the HTML or other attributes as specified in the $attributes array. Using ImageCache with Contributed Modules: ImageCache presets can be put to use in various other modules. For example, when using CCK with the Imagefield module, you can use the "Display fields" local task tab to choose a preset to apply to images in that field. Similarly, you can specify a preset when displaying images attached to nodes using Imagefield in a View through the Views UI. For more information, refer to http://drupal.org/node/163561. (Images, page names, and form field names may refer to previous versions of ImageCache, but the concepts are the same.)
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