[Mapserver-users] legend question

[Map Surfers]

Thanks to all who posted back.

I decided to go with the following code:

[leg_group_html]
<tr>
  <td align="left" valign="top" colspan="2"
bgcolor="#FFFFFF" nowrap>
    <font face="Verdana, Arial, Helvetica" size="-1"
color="#000000">
      <input type="checkbox" name="layer_status[]"
value="[leg_group_name]" [if
name=layer_status oper=eq value=1]CHECKED[/if] [if
name=layer_status oper=eq value=2]CHECKED[/if]>
      <b>[leg_group_name]</b>
    </font>
  </td>
</tr>
[/leg_group_html]
 
[leg_layer_html order_metadata=WMS_ORDER opt_flag=15]
[/leg_layer_html]
 
[leg_class_html order_metadata=WMS_ORDER opt_flag=15]
<tr>
  <td width="6" bgcolor="#FFFFFF"> </td>
  <td align="left" valign="top" bgcolor="#FFFFFF"
nowrap>
    <font face="Verdana, Arial, Helvetica" size="-1">
      <img src="[leg_icon width=18 height=12]"
width="18" height="12" border="0"
align="left"> [leg_class_name]
    </font>
  </td>
</tr>
[/leg_class_html]

- thanks again -

--- Charlton Purvis <cpurvis at asg.sc.edu> wrote:
> Hi, Damian:
> 
> That's not as easy to do, but I do it frequently. 
> But let me make sure
> I understand what you want to do:
> 
> [x] Group1Name
>     Class1
>     Class2
>     Class3
> [x] Group2Name
> 
> Is that right?
> 
> If so, I do it by sneaking in a few METADATA
> variables inside my LAYER
> and also making the legend use fixed images (i.e.
> don't allow MapServer
> to use the ones it creates on-the-fly).  To go into
> all the gory detail
> would be, well, gory.  So I'll just throw some code
> at you and give you
> a few points.
> 
> .map
> # I want to show 
> # [x] speed bari absolute diff power2
> #      color_block class 1
> #      color_block class 2
> #      etc.
>   LAYER
>     NAME "speed_bari_absolute_diff"
>     GROUP "speed_bari_absolute_diff"
>     STATUS OFF
>     DATA "the_geom from domain_intersect"
>     TYPE POINT
>     CONNECTIONTYPE POSTGIS
>     CONNECTION "user=postgres dbname=myGISdb
> host=localhost"
>     SYMBOLSCALE 10000000
>     TOLERANCE 4000
>     TOLERANCEUNITS meters
>     TEMPLATE "ttt"
>     METADATA
>       no_icon "ttt"
>       list_icons "ttt"
>       query_cols "xi yi unc_speed_bari um_speed_bari
> usf_speed_bari
> speed_bari_dif_abs speed_bari_dif_per"
>     END
> 
> Now look at the attached .html file.  It's ugly! 
> And the resulting html
> (after it is parsed) is even worse!  I'm going to
> have to think of
> something slicker before I use it real-time.  As a
> matter of fact, I
> don't think I'll use this solution, at all.
> 
> But until then . . .
> 
> * Usual checkbox if/then stuff, but I look for a
> metadata variable,
> no_icon, to see if it is set.  If it is, then I
> don't want this group to
> have an icon at the group checkbox level.  Just the
> checkbox, please.
> (use_icon means I do want a group-level icon. 
> Follow the use_icon isset
> stuff to see that the image URL is placed at this
> point.  All the
> javascript junk is to remove the underscores.
> * Write the group name.  Same javascript underscore
> junk.
> * Now in the class level, I have hard coded checks
> for layer names.  So
> if we're looking at the speed_bari_percent_diff
> layer, show the class
> icons which are hard coded the same way as the group
> icons in the first
> bullet.
> 
> I realize that I'm just throwing stuff at you, and
> that's not completely
> helpful.  If you want more details, say the word.
> 
> Charlton
> 
> > -----Original Message-----
> > From: Map Surfers [mailto:map_surfer at yahoo.com]
> > Sent: Tuesday, September 09, 2003 3:32 PM
> > To: mapserver-users at lists.gis.umn.edu
> > Subject: [Mapserver-users] legend question
> > 
> > How would I make it so that the classes only
> displayed
> > if a user selected the layer/group to display?
> > 
> > [leg_group_html]
> > <tr>
> >   <td colspan="2" bgcolor="#CCCCCC"><font
> > face="Verdana, Arial, Helvetica" size="-1">
> >     <input type="checkbox" name="layer_status[]"
> > value="[layer_group_name]" [if name=layer_status
> > oper=eq value=1]CHECKED[/if][if name=layer_status
> > oper=eq value=2]CHECKED[/if]>
> >      <b>[leg_group_name]</b>
> >   </font></td>
> > </tr>
> > [/leg_group_html]
> > 
> > [leg_class_html]
> > <tr>
> >   <td align="center" valign="top"><font
> face="Verdana,
> > Arial, Helvetica" size="-1">
> >     <img src="[leg_icon width=18 height=10]"
> > width="20" height="10">
> >   </font></td>
> >   <td><font face="Verdana, Arial, Helvetica"
> > size="-1">
> >     [leg_class_name]
> >   </font></td>
> > </tr>
> > [/leg_class_html]
> > 
> > TIA,
> > 
> > Damian
> > [leg_group_html Opt_Flag=15]
> <tr bgcolor="#FFFFFF">
>   <td align="center"><input type="checkbox"
> name="layer_status[]" value="[leg_group_name]" [if
> name=layer_status oper=eq  value=1]CHECKED[/if][if
> name=layer_status oper=eq value=2]CHECKED[/if]></td>
>   <td>[if name=no_icon oper=isnull] [if
> name=use_icon oper=isnull] <img src=[leg_icon]>[/if]
> [/if]
> [if name=use_icon oper=isset]
> <script>document.write('<img
> src=/legend_icons/seacoos_bathy/' +
> "[leg_group_name]".replace(/ /g,'_') +
> '.png>');</script>
> [/if]
> <font face="Arial, Helvetica, sans-serif"
>
size="2"><script>document.write("[leg_group_name]".replace(/_/g,'
> '));</script>[if name=list_icon
> oper=isset]...[/if]</td></font>
> </tr>
> [/leg_group_html]
> [leg_class_html opt_flag=15]
>    [if name=layer_status value=1]
>       [if name=layer_group oper=eq
> value=speed_bari_percent_diff]
>          <tr><td><td><script>document.write('<img
>
src=/legend_icons/seacoos_bathy/speed_bari_percent_diff/'
> + "[leg_class_name]".replace(/ /g,'_') +
> '.png>');</script> <font face="Arial, Helvetica,
> sans-serif"
> size="2">[leg_class_name]</font></td></td></tr>
>       [/if]
>    [/if]
> [/leg_class_html]
> 


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