Media player remote gadget

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Description Description The simple way to stream. The process of creating a gadget skin should consist of drawing the new UI images, writing a script to set their positions and dropping those files to the skins folder. The user should then be able to choose the active skin in the gadget's settings dialog.

The gadget's graphical user interface is defined by a set of HTML pages and cascading style sheets. The keyword is "cascading". It means that you can combine two or more style sheets and have each new style sheet complement or alter the previous ones. If we manage to define both the appearance and the position and size of all gadget's UI elements in a style sheet, than we can have the user change it just by appending his own style sheet to the document. All user interface elements will be DIV s with a background image, position and size set in the style sheet.

For example, the Play button will be defined as follows:. The class of the button tells us whether it is currently pressed or not. This naturally changes on the onMouseDown and onMouseUp :. The onDown and onUp methods will be a little more complex in a real-life situation to handle situations like moving the mouse pointer away from the button with the mouse button pressed.

If you want to see such implementation, look at the source code. Now, if someone wants to, let's say, change the button's position, all he needs to do is apply a new, very simple style sheet like this one:.

So now we have the default stylesheet, a skins directory containing subdirectories with custom additional stylesheets and the user has picked a skin he wants to use as described in the Accessing the hard drive section of this article. The last thing we need to do is tell the gadget at runtime to combine the right style sheets and link them to the gadget's HTML. Here is what needs to be done:. In the first four steps, we use the Document Object Model to locate and replace the stylesheets linked to the document.

In the fifth step, we use the offsetWidth and offsetHeight properties of the top-level DIV to read the new size of the gadget and adjust the size of the document's body. Please note that these two properties are only part of Internet Explorer's DHTML object model, not the W3C's standard, but they are very useful, since they always return the element's size in pixels, unlike the element.

The last tricky part to creating a skinnable interface is resizing the Volume and Position sliders. If we want to let the user decide the range and size of a slider, we need to calculate the slider's relative position based on it's current range and position. To calculate the current volume on a range of 1 to , we perform the following calculation:. This way, the creator of a skin can resize and reposition the slider however he likes and it will still work as expected. The standard way to deploy a Gadget is to zip pack all the gadget files and change the archive's file extension to.

When the user double-clicks this. The problem is that before running the gadget, we need to register our winampX. In other articles, the authors suggest to install the gadget the standard way, then close it, register the DLL manually and run the gadget again. I don't like that too much and I have tried a different approach.

The process of installing a gadget consists of copying the gadget files to the right subfolder in the user's profile folder and, in our case, registering the DLL. Both of these tasks can be done automatically and there is no need to have the user register anything manually.

The install script can be written as a simple batch file:. Please note that I have split long lines into several short ones, which is unacceptable in a real batch file. The script does just what I have described above. It copies the gadget's directory to the Gadget directory in the current user's profile and then registers the DLL file. The uninstall script is just as easy.

Update: Another approach to registering the assembly is described in this article. While creating a simple Sidebar Gadget is quick and simple, there is no limit to how deep and dirty you want to get. Gadgets are as small and simple on the outside as they are powerful on the inside and that is what good user interface is all about. Please, share your thoughts and skins on this Gadget with me.