Class: Savio::Slider

Inherits:
Object
  • Object
show all
Includes:
IORenderable
Defined in:
lib/savio/Slider.rb

Constant Summary collapse

@@sliders = 
[]

Instance Attribute Summary collapse

Attributes included from IORenderable

#allowDrag, #displayName, #draggingEnabled, #duplicate, #enabled, #shown, #x, #y, #z

Class Method Summary collapse

Instance Method Summary collapse

Methods included from IORenderable

#context, #drag, #dragType=, #endDrag, #kill, #rebuild

Constructor Details

#initialize(args = {}) ⇒ Slider

Returns a new instance of Slider.



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# File 'lib/savio/Slider.rb', line 12

def initialize(args = {})
  @@sliders.push(self)
  super(args)

  @length = args[:length]   || 100
  @min = args[:min]         || 0
  @max = args[:max]         || 100

  @style = args[:style] || 'knob'
  if @style != 'knob' && @style != 'fill'
    @style = 'knob'
  end

  @value = args[:value]     || rand(@min..@max)
  @showValue = args[:showValue] || true

  @labelColor  = args[:labelColor]  || Savio::Colors::White
  @sliderColor = args[:sliderColor] || Savio::Colors::Gray
  @knobColor   = args[:knobColor]   || Savio::Colors::Green

  @onChange = Proc.new {}

  build()
end

Instance Attribute Details

#length ⇒ Object

Returns the value of attribute length.



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# File 'lib/savio/Slider.rb', line 5

def length
  @length
end

#max ⇒ Object

Returns the value of attribute max.



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# File 'lib/savio/Slider.rb', line 5

def max
  @max
end

#min ⇒ Object

Returns the value of attribute min.



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# File 'lib/savio/Slider.rb', line 5

def min
  @min
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



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# File 'lib/savio/Slider.rb', line 5

def size
  @size
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/savio/Slider.rb', line 5

def value
  @value
end

Class Method Details

.sliders ⇒ Object 



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# File 'lib/savio/Slider.rb', line 8

def self.sliders
  @@sliders
end

Instance Method Details

#add ⇒ Object 



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# File 'lib/savio/Slider.rb', line 134

def add()
  super()
  @sliderLine.add
  @knob.add
  @label.add
  @nameLabel.add
end

#build ⇒ Object 



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# File 'lib/savio/Slider.rb', line 142

def build()
  @shown = true

  @sliderLine = Line.new(
    x1: @x, y1: @y,
    x2: @x+@length, y2: @y,
    width: @size,
    color: @sliderColor,
    z: @z
  )

  case @style
  when 'knob'
    @knob = Circle.new(
      x: @x, y: @y,
      radius: @size * 1.2,
      color: @knobColor,
      z: @z+1
    )
  when 'fill'
    @knob = Rectangle.new(
      x: @x, y: @y,
      width: 0 , height: @size,
      color: @knobColor,
      z: @z+1
    )
  end

  @label = Text.new(
    @value.to_s,
    x: @x + @length + @size, y: @y - @size * 1.75,
    size: @size * 2.5,
    color: @labelColor,
    z: @z+1
  )

  @label.y = @y + @sliderLine.width / 2 - @label.height / 2

  @nameLabel = Text.new(
    @displayName.to_s,
    x: @x, y: @y - @size * 3 - @size,
    size: @size * 2.5,
    color: @labelColor,
    z: @z+2
  )

  setValue(@value)

  if @showValue == false
    @label.remove
  end
end

#knobColor=(c) ⇒ Object 



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# File 'lib/savio/Slider.rb', line 63

def knobColor=(c)
  @knobColor = c
  rebuild()
end

#labelColor=(c) ⇒ Object 



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# File 'lib/savio/Slider.rb', line 55

def labelColor=(c)
  @labelColor = c
  rebuild()
end

#moveKnob(x) ⇒ Object 



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# File 'lib/savio/Slider.rb', line 87

def moveKnob(x)
  if x.between?(@x, @x+@length)
    renderKnobTo(x)

    to_max = @max
    to_min = @min
    from_max = @x + @length
    from_min = @x
    pos = x
    @value = (((to_max - to_min) * (pos - from_min)) / (from_max - from_min) + to_min)
    if @showValue == true
      @label.text = @value.round(2).to_s
    end
    @onChange.call
  end
end

#onChange(&proc) ⇒ Object 



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# File 'lib/savio/Slider.rb', line 37

def onChange(&proc)
  @onChange = proc
end

#remove ⇒ Object 



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# File 'lib/savio/Slider.rb', line 126

def remove()
  super()
  @sliderLine.remove
  @knob.remove
  @label.remove
  @nameLabel.remove
end

#renderKnobTo(x) ⇒ Object 



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# File 'lib/savio/Slider.rb', line 76

def renderKnobTo(x)
  if x.between?(@x, @x+@length)
    case @style
    when 'knob'
      @knob.x = x
    when 'fill'
      @knob.width = x - @x
    end
  end
end

#setValue(value) ⇒ Object 



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# File 'lib/savio/Slider.rb', line 108

def setValue(value)
  if value.between?(@min, @max)
    to_max = @x + @length
    to_min = @x
    from_max = @max.to_f
    from_min = @min.to_f
    pos = value
    knobX = (((to_max - to_min) * (pos - from_min)) / (from_max - from_min) + to_min)
    @value = value
    if @showValue == true
      @label.text = @value.round(2).to_s
    end
    renderKnobTo(knobX)
  else
    setValue(@min)
  end
end

#showValue=(state) ⇒ Object 



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# File 'lib/savio/Slider.rb', line 51

def showValue=(state)
  @showValue = state
  rebuild()
end

#sliderColor=(c) ⇒ Object 



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# File 'lib/savio/Slider.rb', line 59

def sliderColor=(c)
  @sliderColor = c
  rebuild()
end

#style=(style) ⇒ Object 



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# File 'lib/savio/Slider.rb', line 41

def style=(style)
  if style == 'knob' || style == 'fill'
    @style = style
    rebuild()
  end
end