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Fix parsing of ClipRect
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parent
050d9d9097
commit
d7c227f614
6 changed files with 94 additions and 27 deletions
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@ -1259,8 +1259,10 @@ impl FragmentDisplayListBuilding for Fragment {
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};
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// FIXME(pcwalton, #2795): Get the real container size.
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let clip_origin = Point2D::new(stacking_relative_border_box.origin.x + style_clip_rect.left,
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stacking_relative_border_box.origin.y + style_clip_rect.top);
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let clip_origin = Point2D::new(stacking_relative_border_box.origin.x +
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style_clip_rect.left.unwrap_or(Au(0)),
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stacking_relative_border_box.origin.y +
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style_clip_rect.top.unwrap_or(Au(0)));
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let right = style_clip_rect.right.unwrap_or(stacking_relative_border_box.size.width);
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let bottom = style_clip_rect.bottom.unwrap_or(stacking_relative_border_box.size.height);
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let clip_size = Size2D::new(right - clip_origin.x, bottom - clip_origin.y);
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@ -2286,8 +2286,8 @@ fn static_assert() {
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self.gecko.mImageRegion.height = 0;
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}
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Either::First(rect) => {
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self.gecko.mImageRegion.x = rect.left.0;
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self.gecko.mImageRegion.y = rect.top.0;
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self.gecko.mImageRegion.x = rect.left.unwrap_or(Au(0)).0;
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self.gecko.mImageRegion.y = rect.top.unwrap_or(Au(0)).0;
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self.gecko.mImageRegion.height = rect.bottom.unwrap_or(Au(0)).0 - self.gecko.mImageRegion.y;
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self.gecko.mImageRegion.width = rect.right.unwrap_or(Au(0)).0 - self.gecko.mImageRegion.x;
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}
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@ -2356,6 +2356,8 @@ fn static_assert() {
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pub fn set_clip(&mut self, v: longhands::clip::computed_value::T) {
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use gecko_bindings::structs::NS_STYLE_CLIP_AUTO;
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use gecko_bindings::structs::NS_STYLE_CLIP_RECT;
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use gecko_bindings::structs::NS_STYLE_CLIP_LEFT_AUTO;
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use gecko_bindings::structs::NS_STYLE_CLIP_TOP_AUTO;
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use gecko_bindings::structs::NS_STYLE_CLIP_RIGHT_AUTO;
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use gecko_bindings::structs::NS_STYLE_CLIP_BOTTOM_AUTO;
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use values::Either;
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@ -2363,8 +2365,19 @@ fn static_assert() {
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match v {
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Either::First(rect) => {
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self.gecko.mClipFlags = NS_STYLE_CLIP_RECT as u8;
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self.gecko.mClip.x = rect.left.0;
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self.gecko.mClip.y = rect.top.0;
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if let Some(left) = rect.left {
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self.gecko.mClip.x = left.0;
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} else {
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self.gecko.mClip.x = 0;
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self.gecko.mClipFlags |= NS_STYLE_CLIP_LEFT_AUTO as u8;
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}
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if let Some(top) = rect.top {
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self.gecko.mClip.y = top.0;
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} else {
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self.gecko.mClip.y = 0;
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self.gecko.mClipFlags |= NS_STYLE_CLIP_TOP_AUTO as u8;
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}
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if let Some(bottom) = rect.bottom {
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self.gecko.mClip.height = bottom.0 - self.gecko.mClip.y;
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@ -294,17 +294,22 @@ pub type LoPOrNumber = Either<LengthOrPercentage, Number>;
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#[allow(missing_docs)]
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/// A computed cliprect for clip and image-region
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pub struct ClipRect {
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pub top: Au,
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pub top: Option<Au>,
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pub right: Option<Au>,
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pub bottom: Option<Au>,
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pub left: Au,
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pub left: Option<Au>,
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}
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impl ToCss for ClipRect {
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fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
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try!(dest.write_str("rect("));
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try!(self.top.to_css(dest));
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try!(dest.write_str(", "));
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if let Some(top) = self.top {
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try!(top.to_css(dest));
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try!(dest.write_str(", "));
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} else {
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try!(dest.write_str("auto, "));
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}
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if let Some(right) = self.right {
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try!(right.to_css(dest));
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try!(dest.write_str(", "));
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@ -319,7 +324,11 @@ impl ToCss for ClipRect {
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try!(dest.write_str("auto, "));
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}
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try!(self.left.to_css(dest));
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if let Some(left) = self.left {
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try!(left.to_css(dest));
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} else {
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try!(dest.write_str("auto"));
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}
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dest.write_str(")")
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}
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}
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@ -849,10 +849,10 @@ impl LoPOrNumber {
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impl HasViewportPercentage for ClipRect {
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fn has_viewport_percentage(&self) -> bool {
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self.top.has_viewport_percentage() ||
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self.top.as_ref().map_or(false, |x| x.has_viewport_percentage()) ||
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self.right.as_ref().map_or(false, |x| x.has_viewport_percentage()) ||
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self.bottom.as_ref().map_or(false, |x| x.has_viewport_percentage()) ||
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self.left.has_viewport_percentage()
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self.left.as_ref().map_or(false, |x| x.has_viewport_percentage())
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}
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}
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@ -860,14 +860,14 @@ impl HasViewportPercentage for ClipRect {
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#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
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/// rect(<top>, <left>, <bottom>, <right>) used by clip and image-region
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pub struct ClipRect {
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/// <top> (<length> | <auto>). Auto maps to 0
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pub top: Length,
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/// <top> (<length> | <auto>)
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pub top: Option<Length>,
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/// <right> (<length> | <auto>)
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pub right: Option<Length>,
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/// <bottom> (<length> | <auto>)
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pub bottom: Option<Length>,
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/// <left> (<length> | <auto>). Auto maps to 0
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pub left: Length,
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/// <left> (<length> | <auto>)
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pub left: Option<Length>,
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}
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@ -875,8 +875,12 @@ impl ToCss for ClipRect {
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fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
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try!(dest.write_str("rect("));
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try!(self.top.to_css(dest));
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try!(dest.write_str(", "));
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if let Some(ref top) = self.top {
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try!(top.to_css(dest));
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try!(dest.write_str(", "));
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} else {
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try!(dest.write_str("auto, "));
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}
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if let Some(ref right) = self.right {
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try!(right.to_css(dest));
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@ -892,7 +896,11 @@ impl ToCss for ClipRect {
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try!(dest.write_str("auto, "));
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}
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try!(self.left.to_css(dest));
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if let Some(ref left) = self.left {
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try!(left.to_css(dest));
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} else {
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try!(dest.write_str("auto"));
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}
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try!(dest.write_str(")"));
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Ok(())
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@ -905,20 +913,20 @@ impl ToComputedValue for ClipRect {
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#[inline]
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fn to_computed_value(&self, context: &Context) -> super::computed::ClipRect {
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super::computed::ClipRect {
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top: self.top.to_computed_value(context),
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top: self.top.as_ref().map(|top| top.to_computed_value(context)),
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right: self.right.as_ref().map(|right| right.to_computed_value(context)),
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bottom: self.bottom.as_ref().map(|bottom| bottom.to_computed_value(context)),
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left: self.left.to_computed_value(context),
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left: self.left.as_ref().map(|left| left.to_computed_value(context)),
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}
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}
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#[inline]
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fn from_computed_value(computed: &super::computed::ClipRect) -> Self {
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ClipRect {
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top: ToComputedValue::from_computed_value(&computed.top),
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top: computed.top.map(|top| ToComputedValue::from_computed_value(&top)),
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right: computed.right.map(|right| ToComputedValue::from_computed_value(&right)),
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bottom: computed.bottom.map(|bottom| ToComputedValue::from_computed_value(&bottom)),
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left: ToComputedValue::from_computed_value(&computed.left),
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left: computed.left.map(|left| ToComputedValue::from_computed_value(&left)),
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}
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}
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}
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@ -939,7 +947,6 @@ impl Parse for ClipRect {
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return Err(())
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}
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// NB: `top` and `left` are 0 if `auto` per CSS 2.1 11.1.2.
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input.parse_nested_block(|input| {
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let top = try!(parse_argument(context, input));
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let right;
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@ -958,10 +965,10 @@ impl Parse for ClipRect {
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left = try!(parse_argument(context, input));
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}
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Ok(ClipRect {
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top: top.unwrap_or(Length::zero()),
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top: top,
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right: right,
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bottom: bottom,
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left: left.unwrap_or(Length::zero()),
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left: left,
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})
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})
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}
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