Class: MotionPrime::ViewStyler

Inherits:
Object
  • Object
show all
Includes:
ElementTextMixin, FrameCalculatorMixin, HasClassFactory, HasStyles
Defined in:
motion-prime/views/view_styler.rb

Constant Summary collapse

STRUCTS_MAP = 
{
  CGAffineTransform   => Proc.new {|v| NSValue.valueWithCGAffineTransform(v) },
  CGPoint             => Proc.new {|v| NSValue.valueWithCGPoint(v) },
  CGRect              => Proc.new {|v| NSValue.valueWithCGRect(v) },
  CGSize              => Proc.new {|v| NSValue.valueWithCGSize(v) },
  UIEdgeInsets        => Proc.new {|v| NSValue.valueWithUIEdgeInsets(v) },
  UIOffset            => Proc.new {|v| NSValue.valueWithUIOffset(v) }
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from ElementTextMixin

#attributed_string, #extract_attributed_string_options, #html_string

Methods included from HasClassFactory

#camelize_factory, #class_factory, #low_camelize_factory

Methods included from HasStyles

#prepare_gradient

Methods included from FrameCalculatorMixin

#calculate_frome_for

Constructor Details

#initialize(view, bounds = CGRectZero, options = {}) ⇒ ViewStyler

Returns a new instance of ViewStyler.



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# File 'motion-prime/views/view_styler.rb', line 10

def initialize(view, bounds = CGRectZero, options = {})
  @options = Styles.extend_and_normalize_options options
  @view = view
  prepare_frame_for(bounds) if @options.delete(:calculate_frame)
  prepare_options!
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'motion-prime/views/view_styler.rb', line 8

def options
  @options
end

#view ⇒ Object (readonly)

Returns the value of attribute view.



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# File 'motion-prime/views/view_styler.rb', line 8

def view
  @view
end

Instance Method Details

#apply ⇒ Object 



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# File 'motion-prime/views/view_styler.rb', line 17

def apply
  converted_options = convert_primitives_to_objects(options)
  converted_options.each do |key, value|
    set_option(key.to_s, value)
  end
end

#convert_primitives_to_objects(options) ⇒ Object 



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# File 'motion-prime/views/view_styler.rb', line 24

def convert_primitives_to_objects(options)
  options.inject({}) do |result, (k, v)|
    v = STRUCTS_MAP[v.class].call(v) if STRUCTS_MAP.has_key?(v.class)
    result[k] = v
    result
  end
end

#extract_attributed_text_options(options) ⇒ Object 



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# File 'motion-prime/views/view_styler.rb', line 74

def extract_attributed_text_options(options)
  text_attributes = [
    :text, :html, :line_spacing, :line_height, :underline, :fragment_color,
    :text_alignment, :font, :line_break_mode, :number_of_lines
  ]
  attributed_text_options = options.slice(*text_attributes)
  options.except!(*text_attributes)
  attributed_text_options
end

#extract_font_options(options, prefix = nil) ⇒ Object 



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# File 'motion-prime/views/view_styler.rb', line 63

def extract_font_options(options, prefix = nil)
  key = [prefix, 'font'].compact.join('_').to_sym
  name_key = [prefix, 'font_name'].compact.join('_').to_sym
  size_key = [prefix, 'font_size'].compact.join('_').to_sym
  if options.slice(size_key, name_key).any?
    font_name = options.delete(name_key) || :system
    font_size = options.delete(size_key) || 14
    options[key] ||= font_name.uifont(font_size)
  end
end

#prepare_frame_for(bounds) ⇒ Object 



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# File 'motion-prime/views/view_styler.rb', line 32

def prepare_frame_for(bounds)
  options[:frame] = calculate_frome_for(bounds, options.merge(test: view.is_a?(UITextView)))
  if options.slice(:width, :height, :right, :bottom, :height_to_fit).values.any?
    mask = UIViewAutoresizingNone
    mask |= UIViewAutoresizingFlexibleTopMargin if options[:top].nil?
    mask |= UIViewAutoresizingFlexibleLeftMargin if options[:left].nil?
    mask |= UIViewAutoresizingFlexibleBottomMargin if options[:bottom].nil?
    mask |= UIViewAutoresizingFlexibleRightMargin if options[:right].nil?
    mask |= UIViewAutoresizingFlexibleWidth if !options[:left].nil? && !options[:right].nil?
    mask |= UIViewAutoresizingFlexibleHeight if options[:height_to_fit].nil? && (!options[:top].nil? && !options[:bottom].nil?)
    options[:autoresizingMask] = mask
  end
end

#prepare_options! ⇒ Object 



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# File 'motion-prime/views/view_styler.rb', line 46

def prepare_options!
  if options.slice(:html, :line_spacing, :line_height, :underline, :fragment_color).any?
    text_options = extract_attributed_text_options(options)

    html = text_options.delete(:html)
    text_options[:text] = html if html
    options[:attributed_text] = html ? html_string(text_options) : attributed_string(text_options)

    # ios 7 bug fix when text is invisible
    if text_options.slice(:line_height, :line_spacing, :text_alignment, :line_break_mode).any? && options.fetch(:number_of_lines, 1) == 1
      options[:number_of_lines] = 0
    end
  end
  extract_font_options(options)
  extract_font_options(options, 'placeholder')
end

#set_option(key, value) ⇒ Object 



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# File 'motion-prime/views/view_styler.rb', line 84

def set_option(key, value)
  # return if value.nil?
  # ignore options
  return if key == 'section' && !view.respond_to?(:section=)
  return if key == 'size_to_fit' && view.is_a?(UILabel)
  return if %w[url default draw_in_rect].include?(key.to_s) && view.is_a?(UIImageView)
  return if %w[
    styles has_drawn_content
    width height top right bottom left value_type
    max_width max_outer_width min_width min_outer_width
    max_height max_outer_height min_height min_outer_width
    height_to_fit container parent_frame].include? key.to_s

  # apply options
  if key.end_with?('title_color')
    view.setTitleColor value.uicolor, forState: UIControlStateNormal
  elsif key.end_with?('alignment') && value.is_a?(Symbol)
    view.setValue value.uitextalignment, forKey: camelize_factory(key)
  elsif key.end_with?('line_break_mode') && value.is_a?(Symbol)
    view.setValue value.uilinebreakmode, forKey: camelize_factory(key)
  elsif key.end_with?('title_shadow_color')
    view.setTitleShadowColor value.uicolor, forState: UIControlStateNormal
  elsif key.end_with?('color')
    color = value.try(:uicolor)
    color = color.cgcolor if view.is_a?(CALayer)
    view.send :"#{low_camelize_factory(key)}=", color
  elsif key.end_with?('background_image')
    if view.is_a?(UIButton)
      view.setBackgroundImage value.uiimage, forState: UIControlStateNormal
    elsif view.is_a?(UISearchBar) && key == 'search_field_background_image'
      view.setSearchFieldBackgroundImage value.uiimage, forState: UIControlStateNormal
    else
      view.setBackgroundColor value.uiimage.uicolor
    end
  elsif key.end_with?('background_view')
    if view.is_a?(UITableView)
      bg_view = UIView.alloc.initWithFrame(view.bounds)
      bg_view.backgroundColor = value[:color].uicolor
      view.backgroundView = bg_view
    else
      view.setValue value, forKey: low_camelize_factory(key)
    end
  elsif key.end_with?('image')
    view.setValue value.uiimage, forKey: camelize_factory(key)
  elsif key.end_with?('_content_inset')
    current_inset = view.contentInset
    current_inset.send("#{key.partition('_').first}=", value)
    view.contentInset = current_inset
  elsif key == 'autocapitalization'
    view.autocapitalizationType = UITextAutocapitalizationTypeNone if value === false
  elsif key == 'keyboard_type'
    view.setKeyboardType value.uikeyboardtype
  elsif key == 'rounded_corners'
    radius = value[:radius].to_f
    corner_consts = {top_left: UIRectCornerTopLeft, bottom_left: UIRectCornerBottomLeft, bottom_right: UIRectCornerBottomRight, top_right: UIRectCornerTopRight}
    corners = value[:corners].inject(0) { |result, corner| result|corner_consts[corner] }
    size = options[:parent_frame].size
    bounds = CGRectMake(0, 0, size.width, size.height)
    mask_path = UIBezierPath.bezierPathWithRoundedRect(bounds, byRoundingCorners: corners, cornerRadii: CGSizeMake(radius, radius))
    mask_layer = CAShapeLayer.layer
    mask_layer.frame = bounds
    mask_layer.path = mask_path.CGPath
    view.mask = mask_layer
  elsif key == 'attributed_text'
    if view.is_a?(UIButton)
      view.setAttributedTitle value, forState: UIControlStateNormal
    else
      view.attributedText = value
    end
  elsif key == 'gradient'
    gradient = prepare_gradient(value)
    view.layer.insertSublayer(gradient, atIndex: 0)
  elsif key == 'selection_style' && view.is_a?(UITableViewCell) && value.is_a?(Symbol)
    view.setSelectionStyle value.uitablecellselectionstyle
  elsif key == 'estimated_cell_height' && view.is_a?(UITableView)
    view.setEstimatedRowHeight value
  elsif key == 'separator_inset' && (view.is_a?(UITableViewCell) || view.is_a?(UITableView))
    if value.to_s == 'none'
      view.separatorInset = UIEdgeInsetsMake(0, 320, 0, 0)
    elsif value.is_a?(Array) && value.count == 2
      view.separatorInset = UIEdgeInsetsMake(0, value.first, 0, value.last)
    end
  elsif value.is_a?(Hash)
    self.class.new(view.send(low_camelize_factory(key).to_sym), nil, value.merge(parent_frame: options[:frame] || options[:parent_frame])).apply
  else
    view.setValue value, forKey: low_camelize_factory(key)
  end
end