Class: Tgios::PhotoScrollView

Inherits:
UIScrollView
  • Object
show all
Defined in:
lib/tgios/photo_scroll_view.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#content_type ⇒ Object

Returns the value of attribute content_type.



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# File 'lib/tgios/photo_scroll_view.rb', line 3

def content_type
  @content_type
end

#image ⇒ Object

Returns the value of attribute image.



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# File 'lib/tgios/photo_scroll_view.rb', line 3

def image
  @image
end

#max_scale ⇒ Object

Returns the value of attribute max_scale.



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# File 'lib/tgios/photo_scroll_view.rb', line 3

def max_scale
  @max_scale
end

#min_content_type ⇒ Object

Returns the value of attribute min_content_type.



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# File 'lib/tgios/photo_scroll_view.rb', line 3

def min_content_type
  @min_content_type
end

Instance Method Details

#dealloc ⇒ Object 



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# File 'lib/tgios/photo_scroll_view.rb', line 92

def dealloc
  ap "dealloc #{self.class.name}"
  super
end

#get_scale(type, image) ⇒ Object 



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# File 'lib/tgios/photo_scroll_view.rb', line 71

def get_scale(type, image)
  horizontal_scale = frame.size.width / image.size.width
  vertical_scale = frame.size.height / image.size.height
  case type
    when :horizontal
      horizontal_scale
    when :vertical
      vertical_scale
    when :fit
      [horizontal_scale, vertical_scale].min
    when :fill
      [horizontal_scale, vertical_scale].max
    else
      horizontal_scale
  end
end

#init ⇒ Object 



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# File 'lib/tgios/photo_scroll_view.rb', line 5

def init
  if super
    self.showsVerticalScrollIndicator = false
    self.showsHorizontalScrollIndicator = false
    self.bouncesZoom = true
    self.decelerationRate = UIScrollViewDecelerationRateFast
    self.delegate = self
    self.backgroundColor = :clear.uicolor
    @max_scale = 4.0
    @content_type = @min_content_type = :horizontal # :horizontal, :vertical, :fit, :fill

    @image_view = PlasticCup::Base.style(UIImageView.new, contentMode: UIViewContentModeScaleAspectFit)
    self.addSubview(@image_view)
  end
  self
end

#initWithFrame(frame, image: image) ⇒ Object 



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# File 'lib/tgios/photo_scroll_view.rb', line 22

def initWithFrame(frame, image: image)
  init
  self.frame = frame
  self.image = image

  self
end

#layoutSubviews ⇒ Object 



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# File 'lib/tgios/photo_scroll_view.rb', line 55

def layoutSubviews
  super
  unless @image_view.nil?
    bsize = self.bounds.size
    center_frame = @image_view.frame

    center_frame.origin.x = center_frame.size.width < bsize.width ? (bsize.width - center_frame.size.width) / 2.0 : 0
    center_frame.origin.y = center_frame.size.height < bsize.height ? (bsize.height - center_frame.size.height) / 2.0 : 0

    @image_view.frame = center_frame
    @image_view.contentScaleFactor = 1.0

  end

end

#viewForZoomingInScrollView(scrollView) ⇒ Object 



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# File 'lib/tgios/photo_scroll_view.rb', line 88

def viewForZoomingInScrollView(scrollView)
  @image_view
end