This plugin allows the visitor to non-destructively manipulate pictures using new buttons on displayimage.php. Depending on the plugin configuration, the settings for each picture may be saved in a cookie on the visitor's computer (so if a picture is visited again, the old settings will be applied), and the URL may change accordingly (so if the visitor passes on the link, the recepient will see the pic just as the visitor likes it). Check the demo to see what all this means. The plugin will add ~30 kbyte of javascript to the page (slightly less in compatible mode).
Use cookies
Determine if the script will store the visitor's preferences for a particular image inside a cookie. If enabled, the manipulation will be re-applied if the visitor returns to a particular image. Turn this off if your gallery has many files with PIDs above 10,000.
Use URL values
If enabled, the changes a visitor applies using this plugin's controls will have an impact on the URL. Subsequently, if a visitor bookmarks a URL or sends the URL to a friend, the changes will be applied on the target PC as well.
Enable the following buttons
The checkboxes in this row allow you to determine which buttons will be displayed for the visitors. Each checkbox here correlates to one button.
Display "reset" button
Determine if the reset button should be displayed that will allow the visitor to undo his manipulations to a particular image. This is the most basic button that you should enable if you enable any other button. It should work in all modern browsers.
Default (and recommended) value is "enabled".
Display "black and white" or "sepia" button
The sepia effect will show an image as if it was an aged black and white photography
In IE 5-8, the sepia filter doesn't work and therefore is not being displayed for visitors using Microsoft's Internet Explorer before version 9. Instead, they will see the button "black and white", which will apply nearly the same effect, but not using the brown colors that old photograps usually have, but simply a greyscale palette.
Display "flip vertically" button
When enabled a button is being displayed that allows the visitor to flip the image vertically, i.e. make the photo display upside down. A second click will revert the change - the image will be displayed as usual.
Usually it doesn't make much sense to display that control, as there is hardly any practical use for it - it's just a gimmick that your visitors can play with.
Display "flip horizontally" button
When enabled a button is being displayed that allows the visitor to flip the image horizontally, i.e. make the left and right side of the photo swap palces as if mirrored. A second click will revert the change - the image will be displayed as usual.
Usually it doesn't make much sense to display that control, as there is hardly any practical use for it - it's just a gimmick that your visitors can play with.
Display "invert" button
This buttons gives your visitors the ability to invert all colors in an image, making it look into a negative image.
Display "emboss" button
This button will allow the visitor to apply an emboss filter on an image, which will make it look as if it was cut out of a metall plate.
Display "blur" button
When applying the gaussian blur button the visitor will see the image in an "unsharp" way.
Enable the following controls
The checkboxes in this row allow you to determine which controls will be displayed for the visitors. Each checkbox here correlates to one control. A control is a feature similar to a button, but it is not just a simple yes/no toggle, but a LED slider that allows your visitors to determine how much of the filter will be applied to an image.
WHile the buttons above are merely a toy for visitors to play with, the controls can be used to a certain extent to adapt an image to a users monitor brightness (although it would of course be better to actually calibrate the monitor instead of playing with the controls for an individual pic.
Display "brightness" control
This is the most basic and most powerfull control of the entire plugin. It allows you to control the brightness, which can be particularly helpfull if you have a dark image that looks better in dark colors, but details can be seen if the user turns the brightness control up.
Display "contrast" control
The contrast control allows your visitors to fine-tune the contrast for each image.
This control doesn't work in IE 5-8 and therefore is not being displayed for visitors using Microsoft's Internet Explorer before version 9.
Display "saturation" control
The saturation control allows your visitors to individually assign a saturation level to each image.
This control doesn't work in IE 5-8 and therefore is not being displayed for visitors using Microsoft's Internet Explorer before version 9.
Display "sharpness" control
This control doesn't work in IE 5-8 and therefore is not being displayed for visitors using Microsoft's Internet Explorer before version 9.
This is a list of definitions of the terms used on this page that are related to color theory: