Hi all, i've modified kalegend.js, implementing a tree legend, to group layers in subgroups.<br>I'm not a javascript guru, but it works fine for my purposes.<br>You can see a simple example, based on spearfish dataset, at <a href="http://140.164.26.222/ka-map_1108/htdocs/index_1_0.html">http://140.164.26.222/ka-map_1108/htdocs/index_1_0.html</a><br>
You can define the subgroups in the mapfile, using "subgroup" "aaaa|bbbb|cccc", in metadata section of the layer object.<br>Using "subgroup" "aaaa|bbbb|cccc", the legend looks like<br>
<br>aaaa<br> bbbb<br> cccc<br> layer<br><br>You can also specfy if a group has to be closed when the application is initialized, using ":c" ;<br>so if you use "subgroup" "aaaa|bbbb:c|cccc"<br>
the legend looks like simply<br> aaaa<br> bbbb<br><br>If more layers belongs to the same subgroup and you want the subgroup closed at startup, there is no need to specify :c for each layers, simply specify :c only for one of them.<br>
<br>I've also modified the mechanism to manage layer's minscale/maxscale. Normally if a layer is not visible at current scale, this layer disappear from the legend. But in my opinion, this behaviour can create a mismatch for an end user. So in my kalegend, when a layer is not visible, it becomes red in legend (as slope and aspect in the demo), and when mouse is over it in the legend a message appears.<br>
In my kalegend.js I've tagged all my changes to make it clear.<br>If someone is interested he can get the code at <a href="http://140.164.26.222/legend_tree.tar.gz">http://140.164.26.222/legend_tree.tar.gz</a><br>In the package you will find kalegend.js, kamap.js and init.php (i've modified this last two files only to manage "subgroup" option in layer's metadata).<br>
For the future i'll develope a system to manage layers drawing order, separated from the main legend, something like a second panel where manage various options, because currently using subgroup you can move only layers inside the subgroup.<br>
I'm developing/modifying others tools for Ka-map, as you can see at <a href="http://140.164.26.222/demo/htdocs/index_app.html">http://140.164.26.222/demo/htdocs/index_app.html</a>, but they are still in alpha status. There are more problems connected with the use of this tools, the first and most important is related with the managment of them (I've planned to develope a tools manager to solve various problem). <br>
I'll share them as soon as possible :-).<br><br>Any suggestions, help or problem reporting will be appreciated.<br> <br>Cheers Marco<br><br>