Module: Scarpe::Components::Calzini

Extended by:
Calzini
Includes:
Base64
Included in:
Calzini, Tiranti
Defined in:
scarpe-components/lib/scarpe/components/calzini.rb,
scarpe-components/lib/scarpe/components/calzini/misc.rb,
scarpe-components/lib/scarpe/components/calzini/para.rb,
scarpe-components/lib/scarpe/components/calzini/alert.rb,
scarpe-components/lib/scarpe/components/calzini/slots.rb,
scarpe-components/lib/scarpe/components/calzini/border.rb,
scarpe-components/lib/scarpe/components/calzini/button.rb,
scarpe-components/lib/scarpe/components/calzini/art_drawables.rb

Overview

The Calzini module expects to be included by a class defining the following methods:

* html_id - the HTML ID for the specific rendered DOM object
* handler_js_code(event_name) - the JS handler code for this DOM object and event name
* (optional) shoes_styles - the Shoes styles for this object, unless overridden in render()

Constant Summary collapse

HTML = 
Scarpe::Components::HTML
SPACING_DIRECTIONS = 
[:left, :right, :top, :bottom]

Instance Method Summary collapse

Methods included from Base64

#encode_file_to_base64, #mime_type_for_filename, #valid_url?

Instance Method Details

#alert_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/alert.rb', line 4

def alert_element(props)
  event = props["event_name"] || "click"
  onclick = handler_js_code(event)

  HTML.render do |h|
    h.div(id: html_id, style: alert_overlay_style(props)) do
      h.div(style: alert_modal_style) do
        h.div(style: {}) { props["text"] }
        h.button(style: {}, onclick: onclick) { "OK" }
      end
    end
  end
end

#arc_element(props, &block) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/art_drawables.rb', line 4

def arc_element(props, &block)
  dc = props["draw_context"] || {}
  rotate = dc["rotate"]
  HTML.render do |h|
    h.div(id: html_id, style: arc_style(props)) do
      h.svg(width: props["width"], height: props["height"]) do
        h.path(d: arc_path(props), transform: "rotate(#{rotate}, #{props["width"] / 2}, #{props["height"] / 2})")
      end
      block.call(h) if block_given?
    end
  end
end

#border_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/border.rb', line 2

def border_element(props)
  HTML.render do |h|
    h.div(id: html_id, style: style(props))
  end
end

#button_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/button.rb', line 4

def button_element(props)
  HTML.render do |h|
    button_props = {
      id: html_id,
      onclick: handler_js_code("click"),
      onmouseover: handler_js_code("hover"),
      style: button_style(props),
      class: props["html_class"],
      title: props["tooltip"],
    }.compact
    h.button(**button_props) do
      props["text"]
    end
  end
end

#check_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/misc.rb', line 4

def check_element(props)
  HTML.render do |h|
    h.input type: :checkbox,
      id: html_id,
      onclick: handler_js_code("click"),
      value: props["text"],
      checked: props["checked"],
      style: drawable_style(props)
  end
end

#contains_number?(str) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'scarpe-components/lib/scarpe/components/calzini/para.rb', line 100

def contains_number?(str)
  !!(str =~ /\d/)
end

#contains_only_numbers?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'scarpe-components/lib/scarpe/components/calzini/para.rb', line 103

def contains_only_numbers?(string)
  /^\d+\z/ =~ string
end

#degrees_to_radians(degrees) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 229

def degrees_to_radians(degrees)
  degrees * Math::PI / 180
end

#dimensions_length(value) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 97

def dimensions_length(value)
  case value
  when Integer
    if value < 0
      "calc(100% - #{value.abs}px)"
    else
      "#{value}px"
    end
  when Float
    "#{value * 100}%"
  else
    value
  end
end

#documentroot_element(props, &block) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/slots.rb', line 28

def documentroot_element(props, &block)
  flow_element(props, &block)
end

#drawable_style(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 112

def drawable_style(props)
  styles = {}
  if props["hidden"]
    styles[:display] = "none"
  end

  # Do we need to set CSS positioning here, especially if displace is set? Position: relative maybe?
  # We need some Shoes3 screenshots and HTML-based tests here...

  if props["top"] || props["left"]
    styles[:position] = "absolute"
  end

  styles[:top] = dimensions_length(props["top"]) if props["top"]
  styles[:left] = dimensions_length(props["left"]) if props["left"]
  styles[:width] = dimensions_length(props["width"]) if props["width"]
  styles[:height] = dimensions_length(props["height"]) if props["height"]
  styles[:"margin-left"] = dimensions_length(props["margin_left"]) if props["margin_left"]
  styles[:"margin-right"] = dimensions_length(props["margin_right"]) if props["margin_right"]
  styles[:"margin-top"] = dimensions_length(props["margin_top"]) if props["margin_top"]
  styles[:"margin-bottom"] = dimensions_length(props["margin_bottom"]) if props["margin_bottom"]


  
  styles = spacing_styles_for_attr("padding", props, styles)

  styles
end

#edit_box_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/misc.rb', line 15

def edit_box_element(props)
  oninput = handler_js_code("change", "this.value")

  HTML.render do |h|
    h.textarea(id: html_id, oninput: oninput,onmouseover: handler_js_code("hover"), style: edit_box_style(props),title: props["tooltip"]) { props["text"] }
  end
end

#edit_line_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/misc.rb', line 23

def edit_line_element(props)
  oninput = handler_js_code("change", "this.value")
  
  HTML.render do |h|
    h.input(id: html_id, oninput: oninput, onmouseover: handler_js_code("hover"), value: props["text"], style: edit_line_style(props),title: props["tooltip"])
  end
end

#empty_page_element ⇒ String

Return HTML for an empty page element, to be filled with HTML renderings of the DOM tree.

The wrapper-wvroot element is where Scarpe will fill in the DOM element.

Returns:

  • (String) —

    the rendered HTML for the empty page object.



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 56

def empty_page_element
  <<~HTML
    <html>
      <head id='head-wvroot'>
        <style id='style-wvroot'>
          /** Style resets **/
          body {
            font-family: arial, Helvetica, sans-serif;
            margin: 0;
            height: 100%;
            overflow: hidden;
          }
          p {
            margin: 0;
          }
          #wrapper-wvroot {
            height: 100%;
            width: 100%;
          }
        </style>
      </head>
      <body id='body-wvroot'>
        <div id='wrapper-wvroot'></div>
      </body>
    </html>
  HTML
end

#first_color_of(*colors) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 192

def first_color_of(*colors)
  colors.compact!
  colors.select! { |c| c != "" }
  rgb_to_hex(colors[0])
end

#flow_element(props, &block) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/slots.rb', line 12

def flow_element(props, &block)
  HTML.render do |h|
    h.div((props["html_attributes"] || {}).merge(id: html_id, style: flow_style(props))) do
      h.div(style: { height: "100%", width: "100%", position: "relative" }, &block)
    end
  end
end

#image_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/misc.rb', line 31

def image_element(props)
  style = drawable_style(props)

  if props["click"]
    HTML.render do |h|
      h.a(id: html_id, href: props["click"]) { h.img(id: html_id, src: props["url"], style:) }
    end
  else
    HTML.render do |h|
      h.img(id: html_id, src: props["url"], style:)
    end
  end
end

#line_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/art_drawables.rb', line 38

def line_element(props)
  HTML.render do |h|
    h.div(id: html_id, style: line_div_style(props)) do
      h.svg(width: props["x2"], height: props["y2"]) do
        h.line(x1: props["left"], y1: props["top"], x2: props["x2"], y2: props["y2"], style: line_svg_style(props))
      end
    end
  end
end

#list_box_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/misc.rb', line 45

def list_box_element(props)
  onchange = handler_js_code("change", "this.options[this.selectedIndex].value")

  # Is this useful at all? Is it overridden below completely?
  option_attrs = { value: nil, selected: false }

  HTML.render do |h|
    h.select(id: html_id, onchange:, style: list_box_style(props)) do
      (props["items"] || []).each do |item|
        option_attrs = {
          value: item,
        }
        if item == props["choose"]
          option_attrs[:selected] = "true"
        end
        h.option(**option_attrs) do
          item
        end
      end
    end
  end
end

#oval_element(props, &block) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/art_drawables.rb', line 62

def oval_element(props, &block)
  dc = props["draw_context"] || {}
  fill = first_color_of(props["fill"], dc["fill"], "black")
  stroke = first_color_of(props["stroke"], dc["stroke"], "black")
  strokewidth = props["strokewidth"] || dc["strokewidth"] || "2"
  radius = props["radius"]
  width = radius * 2
  height = props["height"] || radius * 2 # If there's a height, it's an oval, if not, circle
  center = props["center"] || false
  HTML.render do |h|
    h.div(id: html_id, style: oval_style(props)) do
      h.svg(width: width, height: height, style: "fill:#{fill};") do
        h.ellipse(
          cx: center ? radius : 0,
          cy: center ? height / 2 : 0,
          rx: width ? width / 2 : radius,
          ry: height ? height / 2 : radius,
          style: "stroke:#{stroke};stroke-width:#{strokewidth};",
        )
      end
      block.call(h) if block_given?
    end
  end
end

#para_element(props, &block) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/para.rb', line 4

def para_element(props, &block)
  # Align requires an extra wrapping div.

  # Stacking strikethrough with underline requires multiple elements.
  # We handle this by making strikethrough part of the main element,
  # but using an extra wrapping element for underline.

  tag = props["tag"] || "p"

  para_styles, extra_styles = para_style(props)

  HTML.render do |h|
    if extra_styles.empty?
      h.send(tag, id: html_id, style: para_styles, &block)
    else
      h.div(id: html_id, style: extra_styles.merge(width: "100%")) do
        h.send(tag, style: para_styles, &block)
      end
    end
  end
end

#progress_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/misc.rb', line 93

def progress_element(props)
  HTML.render do |h|
    h.progress(
      id: html_id,
      style: drawable_style(props),
      role: "progressbar",
      "aria-valuenow": props["fraction"],
      "aria-valuemin": 0.0,
      "aria-valuemax": 1.0,
      max: 1,
      value: props["fraction"],
    )
  end
end

#radians_to_degrees(radians) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 233

def radians_to_degrees(radians)
  radians * (180.0 / Math::PI)
end

#radio_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/misc.rb', line 68

def radio_element(props)
  # This is wrong - need to default to the parent slot -- maybe its linkable ID?
  group_name = props["group"] || "no_group"

  HTML.render do |h|
    h.input(
      type: :radio,
      id: html_id,
      onclick: handler_js_code("click"),
      name: group_name,
      value: props["text"],
      checked: props["checked"],
      style: drawable_style(props),
    )
  end
end

#rect_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/art_drawables.rb', line 17

def rect_element(props)
  dc = props["draw_context"] || {}
  rotate = dc["rotate"]
  HTML.render do |h|
    h.div(id: html_id, style: drawable_style(props)) do
      width = props["width"].to_i
      height = props["height"].to_i
      if props["curve"]
        width += 2 * props["curve"].to_i
        height += 2 * props["curve"].to_i
      end
      h.svg(width:, height:) do
        attrs = { x: props["left"], y: props["top"], width: props["width"], height: props["height"], style: rect_svg_style(props) }
        attrs[:rx] = props["curve"] if props["curve"]

        h.rect(**attrs, transform: "rotate(#{rotate} #{width / 2} #{height / 2})")
      end
    end
  end
end

#render(drawable_name, properties = shoes_styles, &block) ⇒ String

Render the Shoes drawable of type drawable_name with the given properties to HTML and return it. If the drawable type takes a block (e.g. Stack or Flow) then the block will be properly rendered.

Parameters:

  • drawable_name (String) —

    the drawable name like "alert", "button" or "rect"

  • properties (Hash) (defaults to: shoes_styles) —

    a drawable-specific hash of property names to values

Returns:

  • (String) —

    the rendered HTML



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 45

def render(drawable_name, properties = shoes_styles, &block)
  send("#{drawable_name}_element", properties, &block)
end

#rgb_to_hex(color) ⇒ Object

Convert an [r, g, b, a] array to an HTML hex color code Arrays support alpha. HTML hex does not. So premultiply.



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 200

def rgb_to_hex(color)
  return nil if color.nil?
  return "#000000" if color == ""

  # TODO: need to figure out if it's a color name like "aquamarine"
  # or a hex code or an image file to use as a pattern or what.
  return color if color.is_a?(String)

  r, g, b, a = *color
  if r.is_a?(Float)
    a ||= 1.0
    r_float = r * a
    g_float = g * a
    b_float = b * a
  else
    a ||= 255
    a_float = (a / 255.0)
    r_float = (r.to_f / 255.0) * a_float
    g_float = (g.to_f / 255.0) * a_float
    b_float = (b.to_f / 255.0) * a_float
  end

  r_int = (r_float * 255.0).to_i.clamp(0, 255)
  g_int = (g_float * 255.0).to_i.clamp(0, 255)
  b_int = (b_float * 255.0).to_i.clamp(0, 255)

  "#%0.2X%0.2X%0.2X" % [r_int, g_int, b_int]
end

#slot_element(props, &block) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/slots.rb', line 4

def slot_element(props, &block)
  HTML.render do |h|
    h.div((props["html_attributes"] || {}).merge(id: html_id, style: slot_style(props))) do
      h.div(style: { height: "100%", width: "100%" }, &block)
    end
  end
end

#spacing_styles_for_attr(attr, props, styles, with_options: true) ⇒ Object

We extract the appropriate margin and padding from the margin and padding properties. If there are no margin or padding properties, we fall back to props["options"] margin or padding, if it exists.

Margin or padding (in either props or props["options"]) can be a Hash with directions as keys, or an Array of left/right/top/bottom, or a constant, which means all four are that constant. You can also specify a "margin" plus "margin-top" which is constant but margin-top is overridden, or similar.

If any margin or padding property exists in props then we don't check props["options"].



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 155

def spacing_styles_for_attr(attr, props, styles, with_options: true)
  spacing_styles = {}

  case props[attr]
  when Hash
    props[attr].each do |dir, value|
      spacing_styles[:"#{attr}-#{dir}"] = dimensions_length value
    end
  when Array
    SPACING_DIRECTIONS.zip(props[attr]).to_h.compact.each do |dir, value|
      spacing_styles[:"#{attr}-#{dir}"] = dimensions_length(value)
    end
  when String, Numeric
    spacing_styles[attr.to_sym] = dimensions_length(props[attr])
  end

  SPACING_DIRECTIONS.each do |dir|
    if props["#{attr}_#{dir}"]
      spacing_styles[:"#{attr}-#{dir}"] = dimensions_length props["#{attr}_#{dir}"]
    end
  end

  unless spacing_styles.empty?
    return styles.merge(spacing_styles)
  end

  # We should see if there are spacing properties in props["options"],
  # unless we're currently doing that.
  if with_options && props["options"]
    spacing_styles = spacing_styles_for_attr(attr, props["options"], {}, with_options: false)
    styles.merge spacing_styles
  else
    # No "options" or we already checked it? Return the styles we were given.
    styles
  end
end

#stack_element(props, &block) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/slots.rb', line 20

def stack_element(props, &block)
  HTML.render do |h|
    h.div((props["html_attributes"] || {}).merge(id: html_id, style: stack_style(props))) do
      h.div(style: { height: "100%", width: "100%", position: "relative" }, &block)
    end
  end
end

#star_element(props, &block) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/art_drawables.rb', line 48

def star_element(props, &block)
  dc = props["draw_context"] || {}
  fill = first_color_of(props["fill"], dc["fill"], "black")
  stroke = first_color_of(props["stroke"], dc["stroke"], "black")
  HTML.render do |h|
    h.div(id: html_id, style: star_style(props)) do
      h.svg(width: props["outer"], height: props["outer"], style: "fill:#{fill}") do
        h.polygon(points: star_points(props), style: "stroke:#{stroke};stroke-width:2")
      end
      block.call(h) if block_given?
    end
  end
end

#text_drawable_element(prop_array) ⇒ Object

The text element is used to render the equivalent of Shoes cText, which includes em, strong, span, link and so on. We use a "content" tag for it which alternates plaintext with a hash of properties.



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# File 'scarpe-components/lib/scarpe/components/calzini/para.rb', line 181

def text_drawable_element(prop_array)
  out = String.new # Need unfrozen string

  # Each item should be a String or a property Hash
  # :items, :html_id, :tag, :props
  prop_array.each do |item|
    if item.is_a?(String)
      out << item.gsub("\n", "<br/>")
    else
      s, extra = text_drawable_style(item[:props])
      out << HTML.render do |h|
        if extra.empty?
          h.send(
            item[:tag] || "span",
            class: "id_#{item[:html_id]}",
            style: s,
            **text_drawable_attrs(item[:props])
          ) do
            text_drawable_element(item[:items])
          end
        else
          h.span(class: "id_#{item[:html_id]}", style: extra) do
            h.send(
              item[:tag] || "span",
              class: "id_#{item[:html_id]}",
              style: s,
              **text_drawable_attrs(item[:props])
            ) do
              text_drawable_element(item[:items])
            end
          end
        end
      end
    end
  end

  out
end

#text_size(sz) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini.rb', line 84

def text_size(sz)
  case sz
  when Numeric
    sz
  when Symbol
    SIZES[sz]
  when String
    SIZES[sz.to_sym] || sz.to_i
  else
    raise "Unexpected text size object: #{sz.inspect}"
  end
end

#video_element(props) ⇒ Object 



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# File 'scarpe-components/lib/scarpe/components/calzini/misc.rb', line 85

def video_element(props)
  HTML.render do |h|
    h.video(id: html_id, style: drawable_style(props), controls: true) do
      h.source(src: @url, type: props["format"])
    end
  end
end