Module: MotionKit

Defined in:
lib/motion-kit/calculate.rb,
lib/motion-kit/util.rb,
lib/motion-kit/version.rb,
lib/motion-kit/motion-kit.rb,
lib/motion-kit-ios/ios_util.rb,
lib/motion-kit-osx/osx_util.rb,
lib/motion-kit/layouts/parent.rb,
lib/motion-kit-cocoa/cocoa_util.rb,
lib/motion-kit/layouts/base_layout.rb,
lib/motion-kit/layouts/tree_layout.rb,
lib/motion-kit-ios/layouts/layout_device.rb,
lib/motion-kit-ios/layouts/uiview_layout.rb,
lib/motion-kit-osx/layouts/nsmenu_layout.rb,
lib/motion-kit-osx/layouts/nsview_layout.rb,
lib/motion-kit-osx/layouts/nswindow_frame.rb,
lib/motion-kit-ios/layouts/uibutton_layout.rb,
lib/motion-kit-osx/layouts/nswindow_layout.rb,
lib/motion-kit-cocoa/constraints/constraint.rb,
lib/motion-kit-cocoa/layouts/calayer_layout.rb,
lib/motion-kit-osx/layouts/nsmenu_extensions.rb,
lib/motion-kit-cocoa/layouts/sugarcube_compat.rb,
lib/motion-kit-ios/layouts/constraints_layout.rb,
lib/motion-kit-ios/layouts/layout_orientation.rb,
lib/motion-kit-osx/layouts/constraints_layout.rb,
lib/motion-kit-osx/layouts/nstableview_layout.rb,
lib/motion-kit-ios/layouts/uiview_layout_frame.rb,
lib/motion-kit-osx/layouts/nsview_layout_frame.rb,
lib/motion-kit-osx/layouts/nstablecolumn_layout.rb,
lib/motion-kit-osx/layouts/nsmenuitem_extensions.rb,
lib/motion-kit/layouts/base_layout_class_methods.rb,
lib/motion-kit-ios/layouts/uiview_layout_gradient.rb,
lib/motion-kit-cocoa/constraints/constraints_layout.rb,
lib/motion-kit-cocoa/constraints/constraints_target.rb,
lib/motion-kit-cocoa/layouts/cagradientlayer_layout.rb,
lib/motion-kit-ios/layouts/uiview_layout_constraints.rb,
lib/motion-kit-osx/layouts/nsview_layout_constraints.rb,
lib/motion-kit-ios/layouts/uiview_layout_autoresizing.rb,
lib/motion-kit-osx/layouts/nsview_layout_autoresizing.rb,
lib/motion-kit-cocoa/constraints/constraint_placeholder.rb

Defined Under Namespace

Modules: BaseLayoutClassMethods Classes: ApplyError, BaseLayout, CAGradientLayerLayout, CALayerLayout, Calculator, CompoundConstraint, Constraint, ConstraintPlaceholder, ConstraintsLayout, ConstraintsTarget, ContextConflictError, InvalidAttributeError, InvalidDeferredError, InvalidPriorityError, InvalidRelationshipError, InvalidRootError, Layout, MenuLayout, NSMenuLayout, NSTableColumnLayout, NSTableViewLayout, NSViewLayout, NSWindowLayout, NoCommonAncestorError, NoContextError, NoSuperviewError, Parent, PointConstraint, SizeConstraint, TreeLayout, UIButtonLayout, UIViewLayout, WindowLayout

Constant Summary collapse

VERSION = 
'0.10.1'

Class Method Summary collapse

Class Method Details

.appearance_class ⇒ Object 



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# File 'lib/motion-kit/util.rb', line 16

def appearance_class
  @appearance_class ||= Class.new
end

.base_view_class ⇒ Object 



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# File 'lib/motion-kit-ios/ios_util.rb', line 8

def base_view_class
  UIView
end

.calculate(view, dimension, amount, full_view = nil) ⇒ Object 



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# File 'lib/motion-kit/calculate.rb', line 5

def calculate(view, dimension, amount, full_view=nil)
  if amount.is_a? Proc
    return view.instance_exec(&amount)
  elsif dimension == :origin || dimension == :center
    return calculate_origin(view, dimension, amount, nil, full_view)
  elsif dimension == :size
    return calculate_size(view, amount, full_view)
  elsif dimension == :frame
    return calculate_frame(view, amount, full_view)
  elsif amount == :full
    return calculate(view, dimension, '100%', full_view)
  elsif amount == :auto
    size_that_fits = intrinsic_size(view)

    return case dimension
    when :width
      return size_that_fits.width
    when :height
      return size_that_fits.height
    end
  elsif amount.is_a?(String) && amount.include?('%')
    full_view ||= view.superview
    unless full_view
      raise NoSuperviewError.new("Cannot calculate #{amount}% of #{dimension.inspect} because view #{view} has no superview.")
    end
    calc = Calculator.scan(amount)

    factor = calc.factor
    constant = calc.constant

    return case dimension
    when :width
      return (full_view.frame.size.width * factor + constant).round
    when :height
      return (full_view.frame.size.height * factor + constant).round
    else
      raise "Unknown dimension #{dimension}"
    end
  else
    return amount
  end
end

.calculate_frame(view, amount, full_view) ⇒ Object 



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# File 'lib/motion-kit/calculate.rb', line 172

def calculate_frame(view, amount, full_view)
  if amount.is_a?(Symbol)
    case amount
    when :full, :auto
      size = calculate_size(view, amount, full_view)
      origin = [0, 0]
    when :center
      size = view.frame.size
      origin = calculate_origin(view, :center, ['50%', '50%'], size, full_view)
      origin.x -= size.width / 2.0
      origin.y -= size.height / 2.0
    else
      raise "Unrecognized amount symbol #{amount.inspect} in MotionKit#calculate_frame"
    end

    return CGRect.new(origin, size)
  elsif amount.is_a?(Array)
    if amount.length == 2
      size = calculate_size(view, amount[1], full_view)
      origin = calculate_origin(view, :origin, amount[0], size, full_view)
    elsif amount.length == 4
      size = calculate_size(view, [amount[2], amount[3]], full_view)
      origin = calculate_origin(view, :origin, [amount[0], amount[1]], size, full_view)
    else
      raise "Don't know what to do with frame value #{amount.inspect}"
    end

    return CGRect.new(origin, size)
  elsif amount.is_a?(Hash)
    if amount.key?(:size)
      size = calculate_size(view, amount[:size], full_view)
    else
      size = calculate_size(view, amount, full_view)
    end

    if amount.key?(:center)
      origin = calculate_origin(view, :center, amount[:center], size, full_view)
      origin.x -= size.width / 2
      origin.y -= size.height / 2
    elsif amount.key?(:origin)
      origin = calculate_origin(view, :origin, amount[:origin], size, full_view)
    else
      origin = calculate_origin(view, :origin, amount, size, full_view)
    end

    return CGRect.new(origin, size)
  else
    return amount
  end
end

.calculate_origin(view, dimension, amount, my_size = nil, full_view) ⇒ Object 



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# File 'lib/motion-kit/calculate.rb', line 48

def calculate_origin(view, dimension, amount, my_size=nil, full_view)
  my_size ||= view.frame.size

  if amount == :center
    x = calculate(view, :width, '50%', full_view) - my_size.width / 2.0
    y = calculate(view, :height, '50%', full_view) - my_size.height / 2.0
    return CGPoint.new(x, y)
  elsif amount.is_a?(Array) || amount.is_a?(Hash)
    x_offset = 0
    y_offset = 0

    if amount.is_a?(Hash)
      if amount[:relative]
        if amount.key?(:x)
          x = amount[:x]
        else
          x = view.frame.origin.x
          if dimension == :center
            x += my_size.width / 2.0
          end
        end

        if amount.key?(:y)
          y = amount[:y]
        else
          y = view.frame.origin.y
          if dimension == :center
            y += my_size.height / 2.0
          end
        end

        if amount.key?(:right)
          x_offset = amount[:right]
        elsif amount.key?(:left)
          x_offset = -amount[:left]
        end

        if amount.key?(:down)
          y_offset = amount[:down]
        elsif amount.key?(:up)
          y_offset = -amount[:up]
        end
        y_offset = -y_offset if amount[:flipped]
      else
        if amount.key?(:right)
          x_offset = -my_size.width
          x = amount[:right]
        elsif amount.key?(:x) || amount.key?(:left)
          x = amount[:x] || amount[:left]
        elsif dimension == :center
          x = view.frame.origin.x
          x += my_size.width / 2
        else
          x = view.frame.origin.x
        end

        if amount.key?(:bottom)
          y_offset = -my_size.height
          y = amount[:bottom]
        elsif amount.key?(:y) || amount.key?(:top)
          y = amount[:y] || amount[:top]
        elsif dimension == :center
          y = view.frame.origin.y
          y += my_size.height / 2
        else
          y = view.frame.origin.y
        end
      end
    else
      x = amount[0]
      y = amount[1]
    end

    x = calculate(view, :width, x, full_view) + x_offset
    y = calculate(view, :height, y, full_view) + y_offset
    return CGPoint.new(x, y)
  else
    return amount
  end
end

.calculate_size(view, amount, full_view) ⇒ Object 



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# File 'lib/motion-kit/calculate.rb', line 129

def calculate_size(view, amount, full_view)
  if amount.is_a?(Array) || amount.is_a?(Hash)
    if amount.is_a?(Hash)
      w = amount.fetch(:w, amount.fetch(:width, view.frame.size.width))
      h = amount.fetch(:h, amount.fetch(:height, view.frame.size.height))
    else
      w = amount[0]
      h = amount[1]
    end

    # scaling is handled a little differently, because it is dependent on
    # the other amount and the intrinsic size.
    if w == :scale || h == :scale
      if w == :scale && h == :scale
        raise "Either width or height can be :scale, but not both"
      elsif w == :scale
        h = calculate(view, :height, h, full_view)
        size = intrinsic_size(view)
        w = h * size.width / size.height
      elsif h == :scale
        w = calculate(view, :width, w, full_view)
        size = intrinsic_size(view)
        h = w * size.height / size.width
      end
    else
      w = calculate(view, :width, w, full_view)
      h = calculate(view, :height, h, full_view)
    end

    return CGSize.new(w, h)
  elsif amount == :full
    w = calculate(view, :width, '100%', full_view)
    h = calculate(view, :height, '100%', full_view)
    return CGSize.new(w, h)
  elsif amount == :auto
    return intrinsic_size(view)
  elsif amount.is_a?(Symbol)
    raise "Unrecognized amount symbol #{amount.inspect} in MotionKit#calculate_size"
  else
    return amount
  end
end

.camel_case(str) ⇒ Object 



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# File 'lib/motion-kit/util.rb', line 8

def camel_case(str)
  str.split('_').map(&:capitalize).join
end

.color_class ⇒ Object 



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# File 'lib/motion-kit-ios/ios_util.rb', line 16

def color_class
  UIColor
end

.default_view_class ⇒ Object 



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# File 'lib/motion-kit-ios/ios_util.rb', line 12

def default_view_class
  UIView
end

.find_all_layers(root, &condition) ⇒ Object

similar to find_all_views, but for CALayer



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# File 'lib/motion-kit-cocoa/cocoa_util.rb', line 46

def find_all_layers(root, &condition)
  found = []
  if condition.call(root)
    found << root
  end

  (root.sublayers || []).each do |sublayer|
    found.concat(find_all_layers(sublayer, &condition))
  end

  return found
end

.find_all_views(root, &condition) ⇒ Object

performs a breadth-first search, but returns all matches



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# File 'lib/motion-kit-cocoa/cocoa_util.rb', line 32

def find_all_views(root, &condition)
  found = []
  if condition.call(root)
    found << root
  end

  (root.subviews || []).each do |subview|
    found.concat(find_all_views(subview, &condition))
  end

  return found
end

.find_first_view(root, &condition) ⇒ Object

performs a breadth-first search



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# File 'lib/motion-kit-cocoa/cocoa_util.rb', line 5

def find_first_view(root, &condition)
  if condition.call(root)
    root
  else
    found = nil
    root.subviews.find do |subview|
      found = find_first_view(subview, &condition)
    end
    return found
  end
end

.find_last_view(root, &condition) ⇒ Object

performs a depth-first and reversed search



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# File 'lib/motion-kit-cocoa/cocoa_util.rb', line 18

def find_last_view(root, &condition)
  found = nil
  root.subviews.reverse.find do |subview|
    found = find_last_view(subview, &condition)
  end

  if ! found && condition.call(root)
    found = root
  end

  return found
end

.intrinsic_size(view) ⇒ Object 



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# File 'lib/motion-kit/calculate.rb', line 223

def intrinsic_size(view)
  size_that_fits = view.intrinsicContentSize
  if size_that_fits.width == MotionKit.no_intrinsic_metric
    size_that_fits.width = 0
  end
  if size_that_fits.height == MotionKit.no_intrinsic_metric
    size_that_fits.height = 0
  end
  return size_that_fits
end

.no_intrinsic_metric ⇒ Object 



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# File 'lib/motion-kit-ios/ios_util.rb', line 20

def no_intrinsic_metric
  UIViewNoIntrinsicMetric
end

.objective_c_method_name(str) ⇒ Object 



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# File 'lib/motion-kit/util.rb', line 4

def objective_c_method_name(str)
  str.split('_').inject([]) { |buffer,e| buffer.push(buffer.empty? ? e : e.capitalize) }.join
end

.setter(method_name) ⇒ Object 



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# File 'lib/motion-kit/util.rb', line 12

def setter(method_name)
  "set#{method_name[0].capitalize}#{method_name[1..-1]}:"
end