Svg.element.viewport: def of gralha-svg-render@0.1.0.1
Import: import gralha-svg-render@0.1.0.1/svg.bend as Svg
Lines 2736-2752 of gralha-svg-render@0.1.0.1/svg.bend: https://jend.leeeet.dev/read.txt?path=gralha-svg-render@0.1.0.1/svg.bend&start_line=2736&end_line=2752

import Base
import gralha-text-scan@0.1.0.1/scan.bend as U
import gralha-xml-doc@0.1.0.1/xml.bend as XML

def element.viewport(+name: String, raw: List<&2, XML.Attr>, +m: Matrix, +w: F32, +h: F32, +root: Bool) -> Viewport:
  +as = image.layout.attrs(raw, w, h)
  +base = matrix.mul(m, transform(XML.attr.get(as, "transform", ""), identity()))
  +svg = U.string.equal(name, "svg")
  +width = U.choose(F32, root, w, viewport.dimension(as, "width", w))
  +height = U.choose(F32, root, h, viewport.dimension(as, "height", h))
  +origin = matrix.mul(base, U.choose(Matrix, root, identity(),
    translate(dimension(as, "x", w, "0"), dimension(as, "y", h, "0"))))
  +view = U.numbers(XML.attr.get(as, "viewBox", ""))
  +vw = U.nth(view, 2n, width)
  +vh = U.nth(view, 3n, height)
  U.branch(Viewport, svg, _ => Viewport{
      matrix.mul(origin, viewbox.matrix(view, width, height, U.trim.both(XML.attr.get(as, "preserveAspectRatio", "xMidYMid meet")))), vw, vh,
      U.branch(Clip, U.string.equal(XML.attr.get(as, "overflow", "hidden"), "visible"), _ => ClipAll{}, _ => viewport.clip(width, height, origin)),
      F32.is_gt(width, 0.0) && F32.is_gt(height, 0.0) && F32.is_gt(vw, 0.0) && F32.is_gt(vh, 0.0)},
    _ => Viewport{U.branch(Matrix, U.string.equal(name, "use"),
      _ => matrix.mul(base, translate(dimension(as, "x", w, "0"), dimension(as, "y", h, "0"))), _ => base), w, h, ClipAll{}, True{}})

Uses (26):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.is_gt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=Clip
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=Matrix
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=Viewport
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=dimension
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=identity
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=image.layout.attrs
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=matrix.mul
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=transform
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=translate
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=viewbox.matrix
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=viewport.clip
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=viewport.dimension
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=branch
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=choose
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=nth
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=numbers
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=string.equal
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=trim.both
  https://jend.leeeet.dev/definition.txt?path=gralha-xml-doc@0.1.0.1/xml.bend&name=Attr
  https://jend.leeeet.dev/definition.txt?path=gralha-xml-doc@0.1.0.1/xml.bend&name=attr.get