Backdrop Applet Plans

George Peter Staplin: To see what we have so far unwrap your starkit, cd to the applets subdirectory, and run:

 tclkit8.5 applet_frontend.tcl backdrop.tcl

The Preview area should display a scaled image using TG.

We need a small pane with "Apply to Desktops:"

 Work WWW Media ... (using the desktop list from a running Whim)

In the options area have:

 [] Scale to fit

 [] Enable Gradient

 o Horizontal Gradient

 o Vertical Gradient

The file listbox should list directories with trailing / or in a different color.

 (Only display *.PNG *.JPG *.JPEG *.png *.jpg *.jpeg)

We should add (optional) tile support. This means we should restructure Whim.img, so that we have a tile.img perhaps. The tile.img should contain code for creating widget aliases for w/ and w/o tile.

The start.applet code will need to copy the tile.img out of the VFS if needed.

Make sure we can test all of backdrop.tcl in the applet_frontend.tcl. Add any necessary code to applet_frontend.tcl to allow for this.

whim_config keys:

 desktop_${name}_image image
 desktop_${name}_tile_image boolean
 desktop_${name}_gradient boolean
 desktop_${name}_gradient_direction horizontal|vertical
 desktop_${name}_gradient_start_color color
 desktop_${name}_gradient_end_color color

While we're at it we might as well change to this scheme for:

 desktop_${name}_background_color

We need to remove keys from existing ::whim_config arrays (during upgrades) after sourcing ~/.whim_behavior. This could be tricky. Keep a log of every item removed or changed.

Have compat procs that handle the merging of certain keys to our new per-desktop scheme (if needed).