Method: Flms::KeyframeViewObject#pinning

Defined in:
app/view_objects/flms/keyframe_view_object.rb

#pinning(width, height, free_height = false) ⇒ Object

Generate position styling so that the layer remains fully in the viewport. (Pinned to top-left if positioned top-left, pinned center if centered, etc.)



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# File 'app/view_objects/flms/keyframe_view_object.rb', line 48

def pinning(width, height, free_height = false)
  # (Round calculated values here so we can prevent floating-point errors from
  # giving us unpredictable results in specs)
  width_style = "#{ style_for_attribute(:width, (@keyframe.scale * width).round(2)) }; "
  height_style = free_height ? '' : "#{ style_for_attribute(:height, (@keyframe.scale * height).round(2)) }; "
  margin_left_style = "margin-left#{easing_function}: #{ ((@keyframe.position_x * @keyframe.scale * -width * 100) + @keyframe.margin_left_percent) }%; "
  margin_top_style = "margin-top#{easing_function}: #{ ((@keyframe.position_y * @keyframe.scale * -height * 100) + @keyframe.margin_top_percent) }%;"
  "#{width_style}#{height_style}#{margin_left_style}#{margin_top_style}"
end