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Widget chnset text and colour

#1

Hi Rory,

I’d like to change the text and colour for e.g. the label and the rslider widgets independently in two separate steps. There seems to be a little bug or I am doing something wrong? It seems I can’t chnset text and colour in two steps (sequentially). Further minor thing: it seems that rslider text cannot be changed if the new text contains the “rslider” string. Using Cabbage version: 2.5.13

Example scenario: rslider’s label depends on rslider’s position as well as on the state of a switch (button) while the rslider’s colour depends on the state of the switch.

My approach: trigger a block on change of rslider or button, chnset text depending on the states of rslider and button, chnset colour depending on the state of the button.

Alternatively I could use elseif statements and chnset both text and colour with single instructions (which works), but it becomes pretty ugly in more complex scenarios.

A simple code to test:

<Cabbage>
form caption("Test_text_colour") size(365, 225), pluginid("tex1") 
rslider bounds(132, 32, 40, 68) range(0, 1, 0, 1, 1e-06) channel("IO_rslider") identchannel("ID_rslider") text("slider") textcolour(0, 255, 0, 255)  trackercolour(0, 100, 0, 255) popuptext("0")
</Cabbage>

<CsoundSynthesizer>
<CsOptions>
-n -d -+rtmidi=NULL -M0 -m0d --displays

</CsOptions>
<CsInstruments>
sr = 44100
ksmps 	=  16;	

instr 1

; this doesn't work
;chnset "text(rslider1)", "ID_rslider"

; this works
;chnset "text(slider1) textcolour(255, 255, 0, 255)", "ID_rslider"

; 1. test these two lines only (only the 2nd instruction applies)
;chnset "textcolour(255, 255, 0, 255)", "ID_rslider"
;chnset "text(slider1)", "ID_rslider"

; 2. test these two lines only (only the 2nd instruction applies)
;chnset "text(slider1)", "ID_rslider"
;chnset "textcolour(255, 255, 0, 255)", "ID_rslider"

endin
</CsInstruments>

<CsScore>
f0 z
i 1 0 [3600*24*7]
</CsScore>
</CsoundSynthesizer>

Thanks for your help and all the great work!

Best wishes,
Samo

#2

In the first instance you are trying to set the name as rslider1, if you change it to slider1 it works. Strange, but I feel it might have something to do with the fact that sliders are given default channels names such as rslider1, rslider2, but I can’t right now think of how this might affect what’s going on here.

The second two cases don’t surprised me. You call chnset and pass it a value, then in the same k-cycle you call it again and give it another value. So the second value is the only one that ever get received.

#3

Thanks for the super fast reply as usually!
The “reserved name” issue can easily be avoided :slight_smile:
The second “issue” was my very basic csound mistake - thanks for clarifying it for me!
I see now and it makes perfect sense that widgets can receive messages only ones per k-cycle.

#4

It is pretty reasonable when it is explained, but I remember struggling with this when I first started working on identifier channels. I couldn’t get my head around it, until I had that d’oh moment. So yeah, it happens us all.