Roku Developer Program

[TheEndless]

"destruk" wrote:
Why wouldn't you be able to concatenate the lines with chr(13) or chr(10) or /r/n and then use that to display the entire combined entity? That's how I'd do it anyway.

He's trying to create a list of selectable items like an roListScreen. Concatenating the entries into a string doesn't really help in that endeavor.

[destruk]

It's just overlaid text on top of a colored rectangle - so concatenating strings to include line feeds, if you work out the line height for the font, you redraw the entire list when needed or swap layers of the finished element.
But you know that. More than 200 ways to skin a cat - just do you want to have numerous arrays of text variables or one 'grouping' per displayed page of information?

[TheEndless]

"destruk" wrote:
It's just overlaid text on top of a colored rectangle - so concatenating strings to include line feeds, if you work out the line height for the font, you redraw the entire list when needed or swap layers of the finished element.
But you know that. More than 200 ways to skin a cat - just do you want to have numerous arrays of text variables or one 'grouping' per displayed page of information?

That won't work if you want to change the text color for the highlighted button. Either way, you're right.. 200 ways...

[btpoole]

The Endless supplied a link to an example for creating a selectable list but this leads to another questions. According to the example, each time the remote button is clicked, the code cycles thru each item in the list checking a value which in turn changes the color of the text depending on the value returned. It then pushes the list back to the canvas for show. My question is, doesn't this seem cumbersome to redraw the list each time? I have my channel following this code pretty much now but seems like there should be an easier way other than having to push the entire list each time. The code from the example looks like the following:

	if m.drawtext
	   textArr = m.create_playlist_text()
	   yTxt = 100
		color = "#00000000"
		index = 0
		for each str in textArr
		    if index = m.playing
		      textColor = "#00ff00"
		    else
		      textColor = "#dddddd"
		    endif
    		list.Push({
    			Text: str
    			TextAttrs: {color: textColor, font: "medium"}
    			TargetRect: {x:200, y:yTxt, w: 500, h: 100}
    		})
    		yTxt = yTxt + 100
    		index = index + 1
		end for
	else
		color = "#00000000"
		list.Push({
			Text: ""
			TextAttrs: {font: "medium"}
			TargetRect: {x:100, y:600, w: 300, h: 100}
		})
	endif