HTML Legend.
Wim Blanken
w.blanken at GEON.NL
Sat Sep 23 03:48:26 EDT 2006
Hello Bob,
We did it a long time ago with a metadata setting containing the max and
minscale. Below you can see our html legend. Don't mind the javascript... I
have also included a layer from a mapfile to see the metadatasetting.
Regards,
Wim Blanken
Geon bv
The Netherlands
-------------------------------------------
[leg_layer_html opt_flag=11]
[if name=gvLegend oper=isset] [if name=gvLegend oper=neq value=-1]
[if name=gvLegend oper=eq value=0] [if name=layer_status oper=eq
value=1]
<tr class="visiblelayer">
<td align="center"><input type="checkbox" name="layer"
value="[leg_layer_name]" [[leg_layer_name]_check]
ONCLICK="javascript:layerToggle('[leg_layer_name]');"></td><td> </td>
<td><img src="[leg_icon width=17 height=11]" border="0"></td>
<td>[metadata name=gvLayerTitle]</td>
</tr>
[/if] [/if]
[if name=gvLegend oper=neq value=0]
<script language="JavaScript" type="text/javascript" >
inscale = true ;
[if name=gvMinScale oper=isset]
minS = parseFloat('[metadata name=gvMinScale]');
if ([scale] <= minS) {inscale = false;}
[/if]
[if name=gvMaxScale oper=isset]
maxS = parseFloat('[metadata name=gvMaxScale]');
if ([scale] > maxS) {inscale = false;}
[/if]
if (inscale) {
document.write('<tr class="visiblelayer">')
}
if (!inscale) {
document.write('<tr class="invisiblelayer">')
}
</script>
<td align="center">
[if name=layer_status oper=eq value=2]
[/if]
[if name=layer_status oper=neq value=2]
<input type="checkbox" name="layer" value="[leg_layer_name]"
[[leg_layer_name]_check]
ONCLICK="javascript:layerToggle('[leg_layer_name]');">
[/if]
</td>
<td>
[if name=gvLayerQuery oper=eq value=true]
<input type="radio" name="activelayer" value="[leg_layer_name]"
group="activelayerradio"
ONCLICK="javascript:activeLayerToggle('[leg_layer_name]');" >
[/if]
[if name=gvLayerQuery oper=neq value=true]
[/if]
</td>
<td>
[if name=gvLegend oper=eq value=1]
[/if]
[if name=gvLegend oper=eq value=2]
[if name=layer_status oper=eq value=0]
[/if]
[if name=layer_status oper=neq value=0]
<script language="JavaScript" type="text/javascript" >
inscale = true ;
[if name=gvMinScale oper=isset]
minS = parseFloat('[metadata name=gvMinScale]');
if ([scale] <= minS) {inscale = false;}
[/if]
[if name=gvMaxScale oper=isset]
maxS = parseFloat('[metadata name=gvMaxScale]');
if ([scale] > maxS) {inscale = false;}
[/if]
if (inscale) {document.write('<img src="[leg_icon width=17
height=11]" border="0">');}
else {document.write(" ");}
</script>
[/if]
[/if]
</td>
<td> [metadata name=gvLayerTitle] <A
HREF="javascript:metainfo('[metadata name=gvLayerTitle]');"
onmouseover="return overlib('Metainformatie opvragen over [metadata
name=gvLayerTitle]',FGCOLOR,
'#ffffee',WIDTH,100,DELAY,500,HAUTO,AUTOSTATUS);" onmouseout="return
nd();">(M)</a> </td>
</tr>
[/if]
[/if] [/if]
[/leg_layer_html]
[leg_class_html opt_flag=0]
<tr class="class">
<td> </td> <td> </td>
<td> <img src="[leg_icon width=17 height=11]" border="0"> </td>
<td> [leg_class_name] </td>
</tr>
[/leg_class_html]
MAPFILE PART:
LAYER
NAME "Buildings"
MAXSCALE 15000
TYPE Line
STATUS ON
DATA "buildings"
CLASS
NAME "Gebouwen"
STYLE
SIZE 1.5
SYMBOL 'simple'
COLOR 250 50 50
END
END # CLASS
METADATA
gvLayerTitle "Gebouwen"
gvLegend "1"
gvLayerQuery "false"
gvMaxScale "15000"
END
END # LAYER
_____
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Bob Basques
Sent: zaterdag 23 september 2006 3:49
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] HTML Legend.
All,
Hi all, I've been using the HTML legend for a while now with very good
results, I have a check box system working nicely showing when a layer is
on/off, etc.
I was wondering, has anyone an example of setting it up to grey out a
checkbox if the scale of view is out of range (MINSCALE/MAXSCALE in the
mapfile). I have an idea of how it might be done, but not sure. Just
asking before I go at it from scratch.
Here is my Legend TEMPLATE as it stands now along with a typical MAPFILE
entry, and a sample output on the end:
MAPFILE ENTRY (one of many :c):
METADATA
LEGEND_TITLE "Census Tract Centroids"
LEGEND_META_GROUP "foreground"
LEGEND_DISPLAY_LEVEL "1"
END
LEGEND TEMPLATE:
[leg_header_html]
[/leg_header_html]
[leg_group_html]
[if name=first_foreground_layer oper=isset] <b>Foreground:</b> <br /> [/if]
[if name=first_background_layer oper=isset] <b>Background:</b> <br /> [/if]
[if name=legend_display_level oper=isset]
[if name=legend_display_level oper=neq value=-1]
[if name=layer_status oper=neq value=2]
<input alt="[leg_group_name] Control"
[if name=legend_meta_group oper=eq value=foreground] type="checkbox" [/if]
[if name=legend_meta_group oper=eq value=background] type="radio" [/if]
name="layer" value="[leg_group_name]"
[if name=layer_status oper=neq value=0] checked="checked" [/if] />
[if name=group_maxscale oper=isset]
<input type="hidden" name="[leg_group_name]_Maxscale" value="[metadata
name=group_maxscale]" />
[/if]
[if name=group_minscale oper=isset]
<input type="hidden" name="[leg_group_name]_Minscale" value="[metadata
name=group_minscale]" />
[/if]
<img alt="[leg_group_name] Legend Image" name="[leg_group_name]LegendImg"
src="[leg_icon]" width="21" height="14" />
[/if]
[if name=metadata_url oper=isset]
<a href='javascript:var temp = window.open("[metadata name=METADATA_URL]",
"meta", "resizable,scrollbars,location,toolbar,height=300,width=500")'>
[/if]
[if name=legend_title oper=isset]
[metadata name=LEGEND_TITLE]
[/if]
[if name=metadata_url oper=isset]
</a>
[/if]
<br />
[/if]
[/if]
[/leg_group_html]
[leg_layer_html opt_flag=0]
[if name=legend_display_level oper=isset]
[if name=legend_display_level oper=eq value=2]
<img alt="Group Legend Image" src="[leg_icon]" width="21" height="14" /><br
/><span class="small">[leg_layer_name]</span><br />
[/if]
[/if]
[/leg_layer_html]
[leg_class_html opt_flag=0]
[if name=legend_display_level oper=isset]
[if name=legend_display_level oper=eq value=3]
<img alt="Class Legend Image" src="[leg_icon]" width="21" height="14" /><br
/><span class="small">[leg_class_name]</span><br />
[/if]
[/if]
[/leg_class_html]
[leg_footer_html]
[/leg_footer_html]
OUTPUT:
<input alt="bg_mntrct00_point Control"
type="checkbox" name="layer" value="bg_mntrct00_point" />
<img alt="bg_mntrct00_point Legend Image" name="bg_mntrct00_pointLegendImg"
src="/tmp/view_27723_1158975512_22_0_20_12.png" width="21" height="14" />
Census Tract Centroids
<br />
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