56 lines
2.2 KiB
Ruby
56 lines
2.2 KiB
Ruby
module SvgHelper
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def previous_page_svg_tag(**options)
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adjacent_page_svg_tag(dir == "rtl" ? 1 : -1, **options)
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end
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def next_page_svg_tag(**options)
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adjacent_page_svg_tag(dir == "rtl" ? -1 : 1, **options)
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end
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def key_svg_tag(**options)
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border_width = options["border"] ? (options["border-width"] || 1) : 0
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rect_attrs = {
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:width => "100%",
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:height => "100%",
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:fill => options["fill"] || "none"
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}
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if border_width.positive?
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rect_attrs[:x] = rect_attrs[:y] = format("%g", 0.5 * border_width)
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rect_attrs[:width] = options["width"] - border_width
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rect_attrs[:height] = options["height"] - border_width
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end
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svg_attrs = options.slice("width", "height", "opacity", :class)
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tag.svg(**svg_attrs) do
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horizontal = "H#{options['width']}"
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concat tag.rect(**rect_attrs, **stroke_attrs(options, "border")) if options["fill"] || options["border"]
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if options["line"]
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y_middle = format("%g", 0.5 * options["height"])
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concat tag.path(:d => "M0,#{y_middle} #{horizontal}", **stroke_attrs(options, "line"))
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end
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if options["casing"]
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casing_width = options["casing-width"] || 1
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y_top = format("%g", 0.5 * casing_width)
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y_bottom = format("%g", options["height"] - (0.5 * casing_width))
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concat tag.path(:d => "M0,#{y_top} #{horizontal} M0,#{y_bottom} #{horizontal}", **stroke_attrs(options, "casing"))
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end
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end
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end
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private
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# returns "<" shape if side == -1; ">" if side == 1
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def adjacent_page_svg_tag(side, **options)
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height = options[:height] || 15
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pad = 2
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segment = (0.5 * height) - pad
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width = (segment + (2 * pad)).ceil
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path_data = "M#{side * (pad - (0.5 * width))},#{pad} l#{side * segment},#{segment} l#{-side * segment},#{segment}"
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path_tag = tag.path :d => path_data, :fill => "none", :stroke => "currentColor", :"stroke-width" => 1.5
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tag.svg path_tag, :width => width, :height => height, :viewBox => "-#{0.5 * width} 0 #{width} #{height}", :class => options[:class]
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end
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def stroke_attrs(attrs, prefix)
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attrs.select { |key| key.start_with?(prefix) }.transform_keys { |key| key.delete_prefix(prefix).prepend("stroke") }
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end
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end
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