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Add some documentation to the style crate.
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Ms2ger
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21 changed files with 123 additions and 21 deletions
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@ -2,6 +2,8 @@
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//! CSS transitions and animations.
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use app_units::Au;
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use bezier::Bezier;
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use cssparser::{Color, RGBA};
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@ -393,6 +395,9 @@ impl AnimatedProperty {
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}
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}
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/// A trait used to implement [interpolation][interpolated-types].
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///
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/// [interpolated-types]: https://drafts.csswg.org/css-transitions/#interpolated-types
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trait Interpolate: Sized {
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fn interpolate(&self, other: &Self, time: f64) -> Option<Self>;
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}
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@ -418,6 +423,7 @@ impl <T> Interpolate for Option<T> where T: Interpolate {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-number
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impl Interpolate for f32 {
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#[inline]
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fn interpolate(&self, other: &f32, time: f64) -> Option<f32> {
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@ -425,6 +431,7 @@ impl Interpolate for f32 {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-number
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impl Interpolate for f64 {
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#[inline]
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fn interpolate(&self, other: &f64, time: f64) -> Option<f64> {
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@ -432,6 +439,7 @@ impl Interpolate for f64 {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-integer
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impl Interpolate for i32 {
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#[inline]
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fn interpolate(&self, other: &i32, time: f64) -> Option<i32> {
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@ -448,6 +456,7 @@ impl Interpolate for Angle {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-visibility
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impl Interpolate for Visibility {
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#[inline]
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fn interpolate(&self, other: &Visibility, time: f64)
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@ -467,6 +476,7 @@ impl Interpolate for Visibility {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-integer
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impl Interpolate for ZIndex {
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#[inline]
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fn interpolate(&self, other: &ZIndex, time: f64)
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@ -483,6 +493,7 @@ impl Interpolate for ZIndex {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-length
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impl Interpolate for VerticalAlign {
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#[inline]
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fn interpolate(&self, other: &VerticalAlign, time: f64)
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@ -499,6 +510,7 @@ impl Interpolate for VerticalAlign {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-simple-list
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impl Interpolate for BorderSpacing {
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#[inline]
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fn interpolate(&self, other: &BorderSpacing, time: f64)
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@ -511,6 +523,7 @@ impl Interpolate for BorderSpacing {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-color
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impl Interpolate for RGBA {
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#[inline]
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fn interpolate(&self, other: &RGBA, time: f64) -> Option<RGBA> {
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@ -526,6 +539,7 @@ impl Interpolate for RGBA {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-color
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impl Interpolate for Color {
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#[inline]
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fn interpolate(&self, other: &Color, time: f64) -> Option<Color> {
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@ -540,6 +554,7 @@ impl Interpolate for Color {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-lpcalc
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impl Interpolate for CalcLengthOrPercentage {
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#[inline]
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fn interpolate(&self, other: &CalcLengthOrPercentage, time: f64)
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@ -551,6 +566,7 @@ impl Interpolate for CalcLengthOrPercentage {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-lpcalc
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impl Interpolate for LengthOrPercentage {
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#[inline]
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fn interpolate(&self, other: &LengthOrPercentage, time: f64)
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@ -579,6 +595,7 @@ impl Interpolate for LengthOrPercentage {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-lpcalc
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impl Interpolate for LengthOrPercentageOrAuto {
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#[inline]
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fn interpolate(&self, other: &LengthOrPercentageOrAuto, time: f64)
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@ -610,6 +627,7 @@ impl Interpolate for LengthOrPercentageOrAuto {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-lpcalc
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impl Interpolate for LengthOrPercentageOrNone {
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#[inline]
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fn interpolate(&self, other: &LengthOrPercentageOrNone, time: f64)
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@ -635,6 +653,8 @@ impl Interpolate for LengthOrPercentageOrNone {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-number
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/// https://drafts.csswg.org/css-transitions/#animtype-length
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impl Interpolate for LineHeight {
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#[inline]
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fn interpolate(&self, other: &LineHeight, time: f64)
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@ -660,7 +680,7 @@ impl Interpolate for LineHeight {
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}
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}
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/// http://dev.w3.org/csswg/css-transitions/#animtype-font-weight
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/// https://drafts.csswg.org/css-transitions/#animtype-font-weight
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impl Interpolate for FontWeight {
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#[inline]
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fn interpolate(&self, other: &FontWeight, time: f64)
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@ -690,6 +710,7 @@ impl Interpolate for FontWeight {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-rect
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impl Interpolate for ClipRect {
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#[inline]
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fn interpolate(&self, other: &ClipRect, time: f64)
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@ -706,6 +727,7 @@ impl Interpolate for ClipRect {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-simple-list
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impl Interpolate for BackgroundPosition {
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#[inline]
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fn interpolate(&self, other: &BackgroundPosition, time: f64)
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@ -720,6 +742,7 @@ impl Interpolate for BackgroundPosition {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-shadow-list
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impl Interpolate for TextShadow {
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#[inline]
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fn interpolate(&self, other: &TextShadow, time: f64)
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@ -736,6 +759,7 @@ impl Interpolate for TextShadow {
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}
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}
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/// https://drafts.csswg.org/css-transitions/#animtype-shadow-list
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impl Interpolate for TextShadowList {
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#[inline]
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fn interpolate(&self, other: &TextShadowList, time: f64)
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@ -789,7 +813,7 @@ fn can_interpolate_list(from_list: &[TransformOperation],
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}
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/// Interpolate two transform lists.
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/// http://dev.w3.org/csswg/css-transforms/#interpolation-of-transforms
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/// https://drafts.csswg.org/css-transforms/#interpolation-of-transforms
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fn interpolate_transform_list(from_list: &[TransformOperation],
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to_list: &[TransformOperation],
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time: f64) -> TransformList {
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@ -849,7 +873,7 @@ fn interpolate_transform_list(from_list: &[TransformOperation],
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/// Build an equivalent 'identity transform function list' based
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/// on an existing transform list.
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/// http://dev.w3.org/csswg/css-transforms/#none-transform-animation
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/// https://drafts.csswg.org/css-transforms/#none-transform-animation
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fn build_identity_transform_list(list: &[TransformOperation]) -> Vec<TransformOperation> {
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let mut result = vec!();
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@ -884,27 +908,27 @@ fn build_identity_transform_list(list: &[TransformOperation]) -> Vec<TransformOp
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result
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}
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/// https://drafts.csswg.org/css-transforms/#interpolation-of-transforms
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impl Interpolate for TransformList {
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#[inline]
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fn interpolate(&self, other: &TransformList, time: f64) -> Option<TransformList> {
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// http://dev.w3.org/csswg/css-transforms/#interpolation-of-transforms
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let result = match (&self.0, &other.0) {
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(&Some(ref from_list), &Some(ref to_list)) => {
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// Two lists of transforms
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// https://drafts.csswg.org/css-transforms/#transform-transform-animation
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interpolate_transform_list(from_list, &to_list, time)
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}
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(&Some(ref from_list), &None) => {
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// http://dev.w3.org/csswg/css-transforms/#none-transform-animation
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// https://drafts.csswg.org/css-transforms/#none-transform-animation
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let to_list = build_identity_transform_list(from_list);
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interpolate_transform_list(from_list, &to_list, time)
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}
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(&None, &Some(ref to_list)) => {
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// http://dev.w3.org/csswg/css-transforms/#none-transform-animation
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// https://drafts.csswg.org/css-transforms/#none-transform-animation
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let from_list = build_identity_transform_list(to_list);
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interpolate_transform_list(&from_list, to_list, time)
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}
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_ => {
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// http://dev.w3.org/csswg/css-transforms/#none-none-animation
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// https://drafts.csswg.org/css-transforms/#none-none-animation
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TransformList(None)
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}
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};
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@ -914,7 +938,9 @@ impl Interpolate for TransformList {
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}
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/// Accesses an element of an array, "wrapping around" using modular arithmetic. This is needed
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/// to handle values of differing lengths according to CSS-TRANSITIONS § 2.
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/// to handle [repeatable lists][lists] of differing lengths.
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///
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/// [lists]: https://drafts.csswg.org/css-transitions/#animtype-repeatable-list
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pub trait GetMod {
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type Item;
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fn get_mod(&self, i: usize) -> &Self::Item;
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