c# - hittesting on Listitems in a Listbox -


i customized listbox show pie-chart (each listitem 1 slice of pie). used itemtemplate (for now) consists of shape. make shapes form full circle, calculated start/endangle each piece , used custom itemspaneltemplate stack items on top of each other.

when click anywhere near pie, "last" item gets selected since located on top of others. quite obvious, hoped since itemtemplate contains shape, inherit hit-testing there , not assume items represented rectangles.

where supposed include hittesting? set ishittestvisible="false" inside itemtemplate, except shape - since doesn't contain except shape, stuck right now.

edit:

i tried surrounding shape grid transparent background, on did set ishittestvisible="false". still results in selecting last element on each click while would've assumed nothing selected. think might confused how hittesting supposed work?

code:

since new wpf might have missed during implementation. added relevant codeparts of minimal example:

my shape-class:

public class piepiece : shape {     protected override geometry defininggeometry     {         { return getpiegeometry() }     }      //some dependencyproperties , helper methods.      private geometry getpiegeometry()     {         //calculations     } }

xaml:

<window [...] xmlns:runner="clr-namespace:mynamespace"> <window.resources>      <!-- custom converters -->      <!-- listbox-style custom controltemplate listbox -->      <itemspaneltemplate x:key="itempanel">         <grid/>     </itemspaneltemplate> </window.resources>  <listbox [...] itemspanel="{staticresource itempanel}"> <listbox.itemtemplate>     <datatemplate>         <grid background="{x:null}" ishittestvisible="false">             <runner:piepiece ishittestvisible="false" [...]>                 <!-- dependency properties set via multibinding here -->             </runner:piepiece>         </grid>     </datatemplate> </listbox.itemtemplate> </listbox>  </window>

i found reason why hittesting did not work desired:

the default template listboxitem-style surrounds contentpresenter border transparent background. click-events caught , handled border, instead of contentpresenter. writing own style listboxitem , setting background {x:null} suggested gaz fixed problem (as did removing border, added 1 further customizations).


Comments

Post a Comment

Popular posts from this blog

angularjs - ADAL JS Angular- WebAPI add a new role claim to the token -

i have created angular spa webapi backend using adal js authentication.as there no roles in ad, need manually add role claims in order give users access different api controllers. the roles stored in database. expecting inject claim through call webapi after authentication ad. webapi code might this. identity.addclaim(new claim("role", "user")); var ticket = new authenticationticket(identity, props); var accesstoken = startup.oauthbeareroptions.accesstokenformat.protect(ticket); is possible replace adal idtoken new token? is viable solution or there other better way handle this? as initial token generated azuread, possible edit token add new claim? appreciated. graph api supporting group claims. see here: http://justazure.com/azure-active-directory-part-4-group-claims/ if @ examples on page, users assigned groups , app can check group in claims. in current version of portal, need app manifest , modify it.
Read more

php - CakePHP HttpSockets send array of paramms -

i problem when make request (i can request). $link = 'http://uri/path/?param1=1&sid=2&sid=3&sid=4' $http = $httpsocket = new httpsocket(); $res = $httpsocket->get($link); if check request pr($http); i see : [line] => /url/path/?param1=1&sid%5b0%5d=2&sid%5b1%5d=3&sid%5b2%5d=4 http/1.1 and i'm getting empty response because server doesn't know parameters sid%5b0%5d=2 when try send parameters array : $data = array('param1' => '1', 'sid' => array('2','3', '4')); i see same changes %5b0%5d - additional indexes. how fix it? unfortunately , can not change server side, if send request in browser, i'll normal response in json format. when make request, can parameters this: $param1 = $_get['param1']; $sid= $_get['sid']; tip: use diferente names parameters. have multiples sid. use sid1, sid2, sid3... update: can parameters this:
Read more

node.js - Using Node without global install -

i'm working on few node & electron (atom shell) projects , i'm curious how them work without user having install node globally. i've seen few applications including node directory in project contains node.exe binary. how go setting node project use binary? edit: thought should add, i've searched everywhere answer this, unrelated results.
Read more