diff options
Diffstat (limited to '')
| -rw-r--r-- | servo/components/style/values/specified/svg_path.rs | 562 |
1 files changed, 173 insertions, 389 deletions
diff --git a/servo/components/style/values/specified/svg_path.rs b/servo/components/style/values/specified/svg_path.rs index 1eb9866dd1..56342b48bb 100644 --- a/servo/components/style/values/specified/svg_path.rs +++ b/servo/components/style/values/specified/svg_path.rs @@ -5,10 +5,13 @@ //! Specified types for SVG Path. use crate::parser::{Parse, ParserContext}; -use crate::values::animated::{lists, Animate, Procedure, ToAnimatedZero}; +use crate::values::animated::{lists, Animate, Procedure}; use crate::values::distance::{ComputeSquaredDistance, SquaredDistance}; +use crate::values::generics::basic_shape::GenericShapeCommand; +use crate::values::generics::basic_shape::{ArcSize, ArcSweep, ByTo, CoordinatePair}; use crate::values::CSSFloat; use cssparser::Parser; +use num_traits::FromPrimitive; use std::fmt::{self, Write}; use std::iter::{Cloned, Peekable}; use std::slice; @@ -70,6 +73,7 @@ impl SVGPathData { #[cfg(feature = "gecko")] pub fn decode_from_f32_array(path: &[f32]) -> Result<Self, ()> { use crate::gecko_bindings::structs::dom::SVGPathSeg_Binding::*; + use crate::values::generics::basic_shape::GenericShapeCommand::*; let mut result: Vec<PathCommand> = Vec::new(); let mut i: usize = 0; @@ -80,85 +84,84 @@ impl SVGPathData { let seg_type = path[i].to_bits() as u16; i = i + 1; match seg_type { - PATHSEG_CLOSEPATH => result.push(PathCommand::ClosePath), + PATHSEG_CLOSEPATH => result.push(Close), PATHSEG_MOVETO_ABS | PATHSEG_MOVETO_REL => { debug_assert!(i + 1 < path.len()); - result.push(PathCommand::MoveTo { + result.push(Move { point: CoordPair::new(path[i], path[i + 1]), - absolute: IsAbsolute::new(seg_type == PATHSEG_MOVETO_ABS), + by_to: ByTo::new(seg_type == PATHSEG_MOVETO_ABS), }); i = i + 2; }, PATHSEG_LINETO_ABS | PATHSEG_LINETO_REL => { debug_assert!(i + 1 < path.len()); - result.push(PathCommand::LineTo { + result.push(Line { point: CoordPair::new(path[i], path[i + 1]), - absolute: IsAbsolute::new(seg_type == PATHSEG_LINETO_ABS), + by_to: ByTo::new(seg_type == PATHSEG_LINETO_ABS), }); i = i + 2; }, PATHSEG_CURVETO_CUBIC_ABS | PATHSEG_CURVETO_CUBIC_REL => { debug_assert!(i + 5 < path.len()); - result.push(PathCommand::CurveTo { + result.push(CubicCurve { control1: CoordPair::new(path[i], path[i + 1]), control2: CoordPair::new(path[i + 2], path[i + 3]), point: CoordPair::new(path[i + 4], path[i + 5]), - absolute: IsAbsolute::new(seg_type == PATHSEG_CURVETO_CUBIC_ABS), + by_to: ByTo::new(seg_type == PATHSEG_CURVETO_CUBIC_ABS), }); i = i + 6; }, PATHSEG_CURVETO_QUADRATIC_ABS | PATHSEG_CURVETO_QUADRATIC_REL => { debug_assert!(i + 3 < path.len()); - result.push(PathCommand::QuadBezierCurveTo { + result.push(QuadCurve { control1: CoordPair::new(path[i], path[i + 1]), point: CoordPair::new(path[i + 2], path[i + 3]), - absolute: IsAbsolute::new(seg_type == PATHSEG_CURVETO_QUADRATIC_ABS), + by_to: ByTo::new(seg_type == PATHSEG_CURVETO_QUADRATIC_ABS), }); i = i + 4; }, PATHSEG_ARC_ABS | PATHSEG_ARC_REL => { debug_assert!(i + 6 < path.len()); - result.push(PathCommand::EllipticalArc { - rx: path[i], - ry: path[i + 1], - angle: path[i + 2], - large_arc_flag: ArcFlag(path[i + 3] != 0.0f32), - sweep_flag: ArcFlag(path[i + 4] != 0.0f32), + result.push(Arc { + radii: CoordPair::new(path[i], path[i + 1]), + rotate: path[i + 2], + arc_size: ArcSize::from_u8((path[i + 3] != 0.0f32) as u8).unwrap(), + arc_sweep: ArcSweep::from_u8((path[i + 4] != 0.0f32) as u8).unwrap(), point: CoordPair::new(path[i + 5], path[i + 6]), - absolute: IsAbsolute::new(seg_type == PATHSEG_ARC_ABS), + by_to: ByTo::new(seg_type == PATHSEG_ARC_ABS), }); i = i + 7; }, PATHSEG_LINETO_HORIZONTAL_ABS | PATHSEG_LINETO_HORIZONTAL_REL => { debug_assert!(i < path.len()); - result.push(PathCommand::HorizontalLineTo { + result.push(HLine { x: path[i], - absolute: IsAbsolute::new(seg_type == PATHSEG_LINETO_HORIZONTAL_ABS), + by_to: ByTo::new(seg_type == PATHSEG_LINETO_HORIZONTAL_ABS), }); i = i + 1; }, PATHSEG_LINETO_VERTICAL_ABS | PATHSEG_LINETO_VERTICAL_REL => { debug_assert!(i < path.len()); - result.push(PathCommand::VerticalLineTo { + result.push(VLine { y: path[i], - absolute: IsAbsolute::new(seg_type == PATHSEG_LINETO_VERTICAL_ABS), + by_to: ByTo::new(seg_type == PATHSEG_LINETO_VERTICAL_ABS), }); i = i + 1; }, PATHSEG_CURVETO_CUBIC_SMOOTH_ABS | PATHSEG_CURVETO_CUBIC_SMOOTH_REL => { debug_assert!(i + 3 < path.len()); - result.push(PathCommand::SmoothCurveTo { + result.push(SmoothCubic { control2: CoordPair::new(path[i], path[i + 1]), point: CoordPair::new(path[i + 2], path[i + 3]), - absolute: IsAbsolute::new(seg_type == PATHSEG_CURVETO_CUBIC_SMOOTH_ABS), + by_to: ByTo::new(seg_type == PATHSEG_CURVETO_CUBIC_SMOOTH_ABS), }); i = i + 4; }, PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS | PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL => { debug_assert!(i + 1 < path.len()); - result.push(PathCommand::SmoothQuadBezierCurveTo { + result.push(SmoothQuad { point: CoordPair::new(path[i], path[i + 1]), - absolute: IsAbsolute::new(seg_type == PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS), + by_to: ByTo::new(seg_type == PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS), }); i = i + 2; }, @@ -215,7 +218,7 @@ impl ToCss for SVGPathData { { let mut writer = SequenceWriter::new(dest, " "); for command in self.commands() { - writer.item(command)?; + writer.write_item(|inner| command.to_css_for_svg(inner))?; } } dest.write_char('"') @@ -268,79 +271,7 @@ impl ComputeSquaredDistance for SVGPathData { /// points of the Bézier curve in the spec. /// /// https://www.w3.org/TR/SVG11/paths.html#PathData -#[derive( - Animate, - Clone, - ComputeSquaredDistance, - Copy, - Debug, - Deserialize, - MallocSizeOf, - PartialEq, - Serialize, - SpecifiedValueInfo, - ToAnimatedZero, - ToComputedValue, - ToResolvedValue, - ToShmem, -)] -#[allow(missing_docs)] -#[repr(C, u8)] -pub enum PathCommand { - /// The unknown type. - /// https://www.w3.org/TR/SVG/paths.html#__svg__SVGPathSeg__PATHSEG_UNKNOWN - Unknown, - /// The "moveto" command. - MoveTo { - point: CoordPair, - absolute: IsAbsolute, - }, - /// The "lineto" command. - LineTo { - point: CoordPair, - absolute: IsAbsolute, - }, - /// The horizontal "lineto" command. - HorizontalLineTo { x: CSSFloat, absolute: IsAbsolute }, - /// The vertical "lineto" command. - VerticalLineTo { y: CSSFloat, absolute: IsAbsolute }, - /// The cubic Bézier curve command. - CurveTo { - control1: CoordPair, - control2: CoordPair, - point: CoordPair, - absolute: IsAbsolute, - }, - /// The smooth curve command. - SmoothCurveTo { - control2: CoordPair, - point: CoordPair, - absolute: IsAbsolute, - }, - /// The quadratic Bézier curve command. - QuadBezierCurveTo { - control1: CoordPair, - point: CoordPair, - absolute: IsAbsolute, - }, - /// The smooth quadratic Bézier curve command. - SmoothQuadBezierCurveTo { - point: CoordPair, - absolute: IsAbsolute, - }, - /// The elliptical arc curve command. - EllipticalArc { - rx: CSSFloat, - ry: CSSFloat, - angle: CSSFloat, - large_arc_flag: ArcFlag, - sweep_flag: ArcFlag, - point: CoordPair, - absolute: IsAbsolute, - }, - /// The "closepath" command. - ClosePath, -} +pub type PathCommand = GenericShapeCommand<CSSFloat, CSSFloat>; /// For internal SVGPath normalization. #[allow(missing_docs)] @@ -355,177 +286,157 @@ impl PathCommand { /// /// See discussion: https://github.com/w3c/svgwg/issues/321 fn normalize(&self, state: &mut PathTraversalState) -> Self { - use self::PathCommand::*; + use crate::values::generics::basic_shape::GenericShapeCommand::*; match *self { - Unknown => Unknown, - ClosePath => { + Close => { state.pos = state.subpath_start; - ClosePath + Close }, - MoveTo { - mut point, - absolute, - } => { - if !absolute.is_yes() { + Move { by_to, mut point } => { + if !by_to.is_abs() { point += state.pos; } state.pos = point; state.subpath_start = point; - MoveTo { + Move { + by_to: ByTo::To, point, - absolute: IsAbsolute::Yes, } }, - LineTo { - mut point, - absolute, - } => { - if !absolute.is_yes() { + Line { by_to, mut point } => { + if !by_to.is_abs() { point += state.pos; } state.pos = point; - LineTo { + Line { + by_to: ByTo::To, point, - absolute: IsAbsolute::Yes, } }, - HorizontalLineTo { mut x, absolute } => { - if !absolute.is_yes() { + HLine { by_to, mut x } => { + if !by_to.is_abs() { x += state.pos.x; } state.pos.x = x; - HorizontalLineTo { - x, - absolute: IsAbsolute::Yes, - } + HLine { by_to: ByTo::To, x } }, - VerticalLineTo { mut y, absolute } => { - if !absolute.is_yes() { + VLine { by_to, mut y } => { + if !by_to.is_abs() { y += state.pos.y; } state.pos.y = y; - VerticalLineTo { - y, - absolute: IsAbsolute::Yes, - } + VLine { by_to: ByTo::To, y } }, - CurveTo { + CubicCurve { + by_to, + mut point, mut control1, mut control2, - mut point, - absolute, } => { - if !absolute.is_yes() { + if !by_to.is_abs() { + point += state.pos; control1 += state.pos; control2 += state.pos; - point += state.pos; } state.pos = point; - CurveTo { + CubicCurve { + by_to: ByTo::To, + point, control1, control2, - point, - absolute: IsAbsolute::Yes, } }, - SmoothCurveTo { - mut control2, + QuadCurve { + by_to, mut point, - absolute, + mut control1, } => { - if !absolute.is_yes() { - control2 += state.pos; + if !by_to.is_abs() { point += state.pos; + control1 += state.pos; } state.pos = point; - SmoothCurveTo { - control2, + QuadCurve { + by_to: ByTo::To, point, - absolute: IsAbsolute::Yes, + control1, } }, - QuadBezierCurveTo { - mut control1, + SmoothCubic { + by_to, mut point, - absolute, + mut control2, } => { - if !absolute.is_yes() { - control1 += state.pos; + if !by_to.is_abs() { point += state.pos; + control2 += state.pos; } state.pos = point; - QuadBezierCurveTo { - control1, + SmoothCubic { + by_to: ByTo::To, point, - absolute: IsAbsolute::Yes, + control2, } }, - SmoothQuadBezierCurveTo { - mut point, - absolute, - } => { - if !absolute.is_yes() { + SmoothQuad { by_to, mut point } => { + if !by_to.is_abs() { point += state.pos; } state.pos = point; - SmoothQuadBezierCurveTo { + SmoothQuad { + by_to: ByTo::To, point, - absolute: IsAbsolute::Yes, } }, - EllipticalArc { - rx, - ry, - angle, - large_arc_flag, - sweep_flag, + Arc { + by_to, mut point, - absolute, + radii, + arc_sweep, + arc_size, + rotate, } => { - if !absolute.is_yes() { + if !by_to.is_abs() { point += state.pos; } state.pos = point; - EllipticalArc { - rx, - ry, - angle, - large_arc_flag, - sweep_flag, + Arc { + by_to: ByTo::To, point, - absolute: IsAbsolute::Yes, + radii, + arc_sweep, + arc_size, + rotate, } }, } } -} -impl ToCss for PathCommand { - fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result + /// The serialization of the svg path. + fn to_css_for_svg<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result where W: fmt::Write, { - use self::PathCommand::*; + use crate::values::generics::basic_shape::GenericShapeCommand::*; match *self { - Unknown => dest.write_char('X'), - ClosePath => dest.write_char('Z'), - MoveTo { point, absolute } => { - dest.write_char(if absolute.is_yes() { 'M' } else { 'm' })?; + Close => dest.write_char('Z'), + Move { by_to, point } => { + dest.write_char(if by_to.is_abs() { 'M' } else { 'm' })?; dest.write_char(' ')?; point.to_css(dest) }, - LineTo { point, absolute } => { - dest.write_char(if absolute.is_yes() { 'L' } else { 'l' })?; + Line { by_to, point } => { + dest.write_char(if by_to.is_abs() { 'L' } else { 'l' })?; dest.write_char(' ')?; point.to_css(dest) }, - CurveTo { + CubicCurve { + by_to, + point, control1, control2, - point, - absolute, } => { - dest.write_char(if absolute.is_yes() { 'C' } else { 'c' })?; + dest.write_char(if by_to.is_abs() { 'C' } else { 'c' })?; dest.write_char(' ')?; control1.to_css(dest)?; dest.write_char(' ')?; @@ -533,63 +444,60 @@ impl ToCss for PathCommand { dest.write_char(' ')?; point.to_css(dest) }, - QuadBezierCurveTo { - control1, + QuadCurve { + by_to, point, - absolute, + control1, } => { - dest.write_char(if absolute.is_yes() { 'Q' } else { 'q' })?; + dest.write_char(if by_to.is_abs() { 'Q' } else { 'q' })?; dest.write_char(' ')?; control1.to_css(dest)?; dest.write_char(' ')?; point.to_css(dest) }, - EllipticalArc { - rx, - ry, - angle, - large_arc_flag, - sweep_flag, + Arc { + by_to, point, - absolute, + radii, + arc_sweep, + arc_size, + rotate, } => { - dest.write_char(if absolute.is_yes() { 'A' } else { 'a' })?; - dest.write_char(' ')?; - rx.to_css(dest)?; + dest.write_char(if by_to.is_abs() { 'A' } else { 'a' })?; dest.write_char(' ')?; - ry.to_css(dest)?; + radii.to_css(dest)?; dest.write_char(' ')?; - angle.to_css(dest)?; + rotate.to_css(dest)?; dest.write_char(' ')?; - large_arc_flag.to_css(dest)?; + (arc_size as i32).to_css(dest)?; dest.write_char(' ')?; - sweep_flag.to_css(dest)?; + (arc_sweep as i32).to_css(dest)?; dest.write_char(' ')?; point.to_css(dest) }, - HorizontalLineTo { x, absolute } => { - dest.write_char(if absolute.is_yes() { 'H' } else { 'h' })?; + HLine { by_to, x } => { + dest.write_char(if by_to.is_abs() { 'H' } else { 'h' })?; dest.write_char(' ')?; x.to_css(dest) }, - VerticalLineTo { y, absolute } => { - dest.write_char(if absolute.is_yes() { 'V' } else { 'v' })?; + VLine { by_to, y } => { + dest.write_char(if by_to.is_abs() { 'V' } else { 'v' })?; dest.write_char(' ')?; y.to_css(dest) }, - SmoothCurveTo { - control2, + SmoothCubic { + by_to, point, - absolute, + control2, } => { - dest.write_char(if absolute.is_yes() { 'S' } else { 's' })?; + dest.write_char(if by_to.is_abs() { 'S' } else { 's' })?; dest.write_char(' ')?; control2.to_css(dest)?; dest.write_char(' ')?; point.to_css(dest) }, - SmoothQuadBezierCurveTo { point, absolute } => { - dest.write_char(if absolute.is_yes() { 'T' } else { 't' })?; + SmoothQuad { by_to, point } => { + dest.write_char(if by_to.is_abs() { 'T' } else { 't' })?; dest.write_char(' ')?; point.to_css(dest) }, @@ -597,135 +505,8 @@ impl ToCss for PathCommand { } } -/// The path command absolute type. -#[allow(missing_docs)] -#[derive( - Animate, - Clone, - ComputeSquaredDistance, - Copy, - Debug, - Deserialize, - MallocSizeOf, - PartialEq, - Serialize, - SpecifiedValueInfo, - ToAnimatedZero, - ToComputedValue, - ToResolvedValue, - ToShmem, -)] -#[repr(u8)] -pub enum IsAbsolute { - Yes, - No, -} - -impl IsAbsolute { - /// Return true if this is IsAbsolute::Yes. - #[inline] - pub fn is_yes(&self) -> bool { - *self == IsAbsolute::Yes - } - - /// Return Yes if value is true. Otherwise, return No. - #[inline] - fn new(value: bool) -> Self { - if value { - IsAbsolute::Yes - } else { - IsAbsolute::No - } - } -} - /// The path coord type. -#[allow(missing_docs)] -#[derive( - AddAssign, - Animate, - Clone, - ComputeSquaredDistance, - Copy, - Debug, - Deserialize, - MallocSizeOf, - PartialEq, - Serialize, - SpecifiedValueInfo, - ToAnimatedZero, - ToComputedValue, - ToCss, - ToResolvedValue, - ToShmem, -)] -#[repr(C)] -pub struct CoordPair { - x: CSSFloat, - y: CSSFloat, -} - -impl CoordPair { - /// Create a CoordPair. - #[inline] - pub fn new(x: CSSFloat, y: CSSFloat) -> Self { - CoordPair { x, y } - } -} - -/// The EllipticalArc flag type. -#[derive( - Clone, - Copy, - Debug, - Deserialize, - MallocSizeOf, - PartialEq, - Serialize, - SpecifiedValueInfo, - ToComputedValue, - ToResolvedValue, - ToShmem, -)] -#[repr(C)] -pub struct ArcFlag(bool); - -impl ToCss for ArcFlag { - #[inline] - fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result - where - W: fmt::Write, - { - (self.0 as i32).to_css(dest) - } -} - -impl Animate for ArcFlag { - #[inline] - fn animate(&self, other: &Self, procedure: Procedure) -> Result<Self, ()> { - (self.0 as i32) - .animate(&(other.0 as i32), procedure) - .map(|v| ArcFlag(v > 0)) - } -} - -impl ComputeSquaredDistance for ArcFlag { - #[inline] - fn compute_squared_distance(&self, other: &Self) -> Result<SquaredDistance, ()> { - (self.0 as i32).compute_squared_distance(&(other.0 as i32)) - } -} - -impl ToAnimatedZero for ArcFlag { - #[inline] - fn to_animated_zero(&self) -> Result<Self, ()> { - // The 2 ArcFlags in EllipticalArc determine which one of the 4 different arcs will be - // used. (i.e. From 4 combinations). In other words, if we change the flag, we get a - // different arc. Therefore, we return *self. - // https://svgwg.org/svg2-draft/paths.html#PathDataEllipticalArcCommands - Ok(*self) - } -} +pub type CoordPair = CoordinatePair<CSSFloat>; /// SVG Path parser. struct PathParser<'a> { @@ -736,7 +517,7 @@ struct PathParser<'a> { macro_rules! parse_arguments { ( $parser:ident, - $abs:ident, + $by_to:ident, $enum:ident, [ $para:ident => $func:ident $(, $other_para:ident => $other_func:ident)* ] ) => { @@ -747,7 +528,9 @@ macro_rules! parse_arguments { skip_comma_wsp(&mut $parser.chars); let $other_para = $other_func(&mut $parser.chars)?; )* - $parser.path.push(PathCommand::$enum { $para $(, $other_para)*, $abs }); + $parser.path.push( + PathCommand::$enum { $by_to, $para $(, $other_para)* } + ); // End of string or the next character is a possible new command. if !skip_wsp(&mut $parser.chars) || @@ -785,23 +568,23 @@ impl<'a> PathParser<'a> { } let command = self.chars.next().unwrap(); - let abs = if command.is_ascii_uppercase() { - IsAbsolute::Yes + let by_to = if command.is_ascii_uppercase() { + ByTo::To } else { - IsAbsolute::No + ByTo::By }; skip_wsp(&mut self.chars); match command { b'Z' | b'z' => self.parse_closepath(), - b'L' | b'l' => self.parse_lineto(abs), - b'H' | b'h' => self.parse_h_lineto(abs), - b'V' | b'v' => self.parse_v_lineto(abs), - b'C' | b'c' => self.parse_curveto(abs), - b'S' | b's' => self.parse_smooth_curveto(abs), - b'Q' | b'q' => self.parse_quadratic_bezier_curveto(abs), - b'T' | b't' => self.parse_smooth_quadratic_bezier_curveto(abs), - b'A' | b'a' => self.parse_elliptical_arc(abs), + b'L' | b'l' => self.parse_lineto(by_to), + b'H' | b'h' => self.parse_h_lineto(by_to), + b'V' | b'v' => self.parse_v_lineto(by_to), + b'C' | b'c' => self.parse_curveto(by_to), + b'S' | b's' => self.parse_smooth_curveto(by_to), + b'Q' | b'q' => self.parse_quadratic_bezier_curveto(by_to), + b'T' | b't' => self.parse_smooth_quadratic_bezier_curveto(by_to), + b'A' | b'a' => self.parse_elliptical_arc(by_to), _ => return Err(()), }?; } @@ -817,12 +600,8 @@ impl<'a> PathParser<'a> { skip_wsp(&mut self.chars); let point = parse_coord(&mut self.chars)?; - let absolute = if command == b'M' { - IsAbsolute::Yes - } else { - IsAbsolute::No - }; - self.path.push(PathCommand::MoveTo { point, absolute }); + let by_to = if command == b'M' { ByTo::To } else { ByTo::By }; + self.path.push(PathCommand::Move { by_to, point }); // End of string or the next character is a possible new command. if !skip_wsp(&mut self.chars) || self.chars.peek().map_or(true, |c| c.is_ascii_alphabetic()) @@ -833,69 +612,74 @@ impl<'a> PathParser<'a> { // If a moveto is followed by multiple pairs of coordinates, the subsequent // pairs are treated as implicit lineto commands. - self.parse_lineto(absolute) + self.parse_lineto(by_to) } /// Parse "closepath" command. fn parse_closepath(&mut self) -> Result<(), ()> { - self.path.push(PathCommand::ClosePath); + self.path.push(PathCommand::Close); Ok(()) } /// Parse "lineto" command. - fn parse_lineto(&mut self, absolute: IsAbsolute) -> Result<(), ()> { - parse_arguments!(self, absolute, LineTo, [ point => parse_coord ]) + fn parse_lineto(&mut self, by_to: ByTo) -> Result<(), ()> { + parse_arguments!(self, by_to, Line, [ point => parse_coord ]) } /// Parse horizontal "lineto" command. - fn parse_h_lineto(&mut self, absolute: IsAbsolute) -> Result<(), ()> { - parse_arguments!(self, absolute, HorizontalLineTo, [ x => parse_number ]) + fn parse_h_lineto(&mut self, by_to: ByTo) -> Result<(), ()> { + parse_arguments!(self, by_to, HLine, [ x => parse_number ]) } /// Parse vertical "lineto" command. - fn parse_v_lineto(&mut self, absolute: IsAbsolute) -> Result<(), ()> { - parse_arguments!(self, absolute, VerticalLineTo, [ y => parse_number ]) + fn parse_v_lineto(&mut self, by_to: ByTo) -> Result<(), ()> { + parse_arguments!(self, by_to, VLine, [ y => parse_number ]) } /// Parse cubic Bézier curve command. - fn parse_curveto(&mut self, absolute: IsAbsolute) -> Result<(), ()> { - parse_arguments!(self, absolute, CurveTo, [ + fn parse_curveto(&mut self, by_to: ByTo) -> Result<(), ()> { + parse_arguments!(self, by_to, CubicCurve, [ control1 => parse_coord, control2 => parse_coord, point => parse_coord ]) } /// Parse smooth "curveto" command. - fn parse_smooth_curveto(&mut self, absolute: IsAbsolute) -> Result<(), ()> { - parse_arguments!(self, absolute, SmoothCurveTo, [ + fn parse_smooth_curveto(&mut self, by_to: ByTo) -> Result<(), ()> { + parse_arguments!(self, by_to, SmoothCubic, [ control2 => parse_coord, point => parse_coord ]) } /// Parse quadratic Bézier curve command. - fn parse_quadratic_bezier_curveto(&mut self, absolute: IsAbsolute) -> Result<(), ()> { - parse_arguments!(self, absolute, QuadBezierCurveTo, [ + fn parse_quadratic_bezier_curveto(&mut self, by_to: ByTo) -> Result<(), ()> { + parse_arguments!(self, by_to, QuadCurve, [ control1 => parse_coord, point => parse_coord ]) } /// Parse smooth quadratic Bézier curveto command. - fn parse_smooth_quadratic_bezier_curveto(&mut self, absolute: IsAbsolute) -> Result<(), ()> { - parse_arguments!(self, absolute, SmoothQuadBezierCurveTo, [ point => parse_coord ]) + fn parse_smooth_quadratic_bezier_curveto(&mut self, by_to: ByTo) -> Result<(), ()> { + parse_arguments!(self, by_to, SmoothQuad, [ point => parse_coord ]) } /// Parse elliptical arc curve command. - fn parse_elliptical_arc(&mut self, absolute: IsAbsolute) -> Result<(), ()> { + fn parse_elliptical_arc(&mut self, by_to: ByTo) -> Result<(), ()> { // Parse a flag whose value is '0' or '1'; otherwise, return Err(()). - let parse_flag = |iter: &mut Peekable<Cloned<slice::Iter<u8>>>| match iter.next() { - Some(c) if c == b'0' || c == b'1' => Ok(ArcFlag(c == b'1')), + let parse_arc_size = |iter: &mut Peekable<Cloned<slice::Iter<u8>>>| match iter.next() { + Some(c) if c == b'1' => Ok(ArcSize::Large), + Some(c) if c == b'0' => Ok(ArcSize::Small), + _ => Err(()), + }; + let parse_arc_sweep = |iter: &mut Peekable<Cloned<slice::Iter<u8>>>| match iter.next() { + Some(c) if c == b'1' => Ok(ArcSweep::Cw), + Some(c) if c == b'0' => Ok(ArcSweep::Ccw), _ => Err(()), }; - parse_arguments!(self, absolute, EllipticalArc, [ - rx => parse_number, - ry => parse_number, - angle => parse_number, - large_arc_flag => parse_flag, - sweep_flag => parse_flag, + parse_arguments!(self, by_to, Arc, [ + radii => parse_coord, + rotate => parse_number, + arc_size => parse_arc_size, + arc_sweep => parse_arc_sweep, point => parse_coord ]) } |