xml - Roku: How do I open a LabelList on a new screen? -


from brightscript, how open following labellist on new screen (not main screen/scene)?

<?xml version = "1.0" encoding = "utf-8" ?>  <!--********** copyright 2016 roku corp.  rights reserved. **********-->  <component name = "labellistexample" extends = "group" initialfocus = "examplelabellist" >    <script type = "text/brightscript" >      <![cdata[      sub init()       m.top.backgrounduri = "pkg:/images/rsgde_bg_hd.jpg"        example = m.top.findnode("examplelabellist")        examplerect = example.boundingrect()       centerx = (1280 - examplerect.width) / 2       centery = (720 - examplerect.height) / 2       example.translation = [ centerx, centery ]        m.top.setfocus(true)     end sub      ]]>    </script>    <children >      <labellist id = "examplelabellist" >        <contentnode role = "content" >         <contentnode title = "renderable nodes" />         <contentnode title = "z-order/parent-child" />         <contentnode title = "animations" />         <contentnode title = "events , observers" />         <contentnode title = "on demand example" />       </contentnode>      </labellist>    </children>  </component>

i think need understand scenegraph api little better understand how this. in main.brs file, roku screen created screen = createobject("rosgscreen") , screen scene created scene = screen.createscene("scene") . of custom components need added xml file of scene. in components folder create 2 separate files labellistexample.brs , labellistexample.xml. in labellistexample.brs add 

sub init()       m.top.backgrounduri = "pkg:/images/rsgde_bg_hd.jpg"        example = m.top.findnode("examplelabellist")        examplerect = example.boundingrect()       centerx = (1280 - examplerect.width) / 2       centery = (720 - examplerect.height) / 2       example.translation = [ centerx, centery ]        m.top.setfocus(true)  end sub

in labellistexample.xml add this:

    <?xml version="1.0" encoding="utf-8"?>     <component name = "labellistexample" extends = "group" initialfocus = "examplelabellist" >     <script type="text/brightscript" uri="pkg:/components/labellistexample.brs" />     <children >          <labellist id = "examplelabellist" >            <contentnode role = "content" >             <contentnode title = "renderable nodes" />             <contentnode title = "z-order/parent-child" />             <contentnode title = "animations" />             <contentnode title = "events , observers" />             <contentnode title = "on demand example" />           </contentnode>          </labellist>        </children>     </component>

now in scene.xml file child should add this:

<poster      id="justposter"      translation="[0, 0]"      width="1280"      height="720"    />  <group id="customcomponentview" visible="false">     <examplelabellist        id="customcomponent"     /> </group>  <group id="defaultview" visible= "true">   <label id="justlabel"         color="0xffffff"         translation="[50, 300]"         wrap="true"         width="1200"         horizalign="center"         text="hide me if can"         opacity="0.5"         font = "font:mediumboldsystemfont"   />       </group>

so big question is: how go defaultview consist label customcomponentview have label list?simple really, need hide 1 , show other. need add onkeyevent() function in scene.brs file (in scene script if doing .xml). in scene init() initialize views , components first :

m.defaultview = m.top.findnode(defaultview) m.customcomponentview = m.top.findnode(customcomponentview) m.labellist = m.top.findnode(customcomponent) m.label = m.top.findnode(justlabel)

in onkeyevent() function when button "ok" pressed on remote, can control view visible with:

m.defaultview.visible = false m.customcomponentview = true

you need set focus when customcomponentview becomes visible with:

m.labellist.setfocus(true)

hope can continue this. check roku documentation find out more onkeyevent() function.


Comments

Post a Comment

Popular posts from this blog

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

sql server - Why does Linq-to-SQL add unnecessary COUNT()? -

here tables: create table customer ( cid int primary key, name varchar(32) ) create table ord ( oid int primary key, cid int foreign key references customer, address varchar(20) ) here's linq-to-sql statement: var aaa = c in db.customer select new { c, o = c.ord.tolist() }; and here's inexplicable query generated linq-to-sql: select [t0].[cid] [cid], [t0].[name] [name], [t1].[oid] [oid], [t1].[cid] [cid2], [t1].[address] [address], (select count(*) [dbo].[ord] [t2] [t2].[cid] = [t0].[cid]) [value] [dbo].[customer] [t0] left outer join [dbo].[ord] [t1] on [t1].[cid] = [t0].[cid] order [t0].[cid], [t1].[oid] i want understand how rid of count(*) part. it's entirely uncalled for! linq needs count(*) in order determine number of entries returned o = c.ord.tolist() .
Read more