ios - How to adjust button width based on screen width in Quartz Designer for iPhone -

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is there possibility adjust button width based on screen width in origami iphone, expression;

for example: button.width = screen.width-50

i can't add current design image question due low reputation

i tried solve on own below;

add following patches patch library

  • button patch
  • rendering destination dimensions patch
  • math patch

then,

  • link pixels wide on rendering destination dimensions first parameter on math patch
  • modify second parameter on math patch required value (for example: 50)
  • select - (minus) operator on math patch
  • link output of math patch width on button patch

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