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Introduce CSSPixelLength and update NonNegativeLength.

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First, we define computed::CSSPixelLength which contains a CSSFloat, a
pixel value, and then we replace computed::Length with CSSPixelLength.
Therefore, the |ComputedValue| of NoCalcLength, AbsoluteLength,
FontRelativeLength, ViewportPercentageLength, CharacterWidth, and
PhysicalLength is CSSPixelLength.

Besides, we drop NonNegativeAu, and replace computed::NonNegativeLength
with NonNegative<computed::Length>. (i.e. NonNegative<CSSPixelLength>)
This commit is contained in:
Boris Chiou 2017-09-13 14:26:51 +08:00
parent cad3aff508
commit a949e2a057
40 changed files with 502 additions and 406 deletions
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34
components/layout/display_list_builder.rs
View file

@ -1325,6 +1325,7 @@ impl FragmentDisplayListBuilding for Fragment {
center.vertical.to_used_value(bounds.size.height));
let radius = match *shape {
GenericEndingShape::Circle(Circle::Radius(length)) => {
let length = Au::from(length);
Size2D::new(length, length)
},
GenericEndingShape::Circle(Circle::Extent(extent)) => {
@ -1409,11 +1410,11 @@ impl FragmentDisplayListBuilding for Fragment {
for box_shadow in style.get_effects().box_shadow.0.iter().rev() {
let bounds = shadow_bounds(
&absolute_bounds.translate(&Vector2D::new(
box_shadow.base.horizontal,
box_shadow.base.vertical,
Au::from(box_shadow.base.horizontal),
Au::from(box_shadow.base.vertical),
)),
box_shadow.base.blur.0,
box_shadow.spread,
Au::from(box_shadow.base.blur),
Au::from(box_shadow.spread),
);
// TODO(pcwalton): Multiple border radii; elliptical border radii.
@ -1426,9 +1427,10 @@ impl FragmentDisplayListBuilding for Fragment {
base: base,
box_bounds: *absolute_bounds,
color: box_shadow.base.color.unwrap_or(style.get_color().color).to_gfx_color(),
offset: Vector2D::new(box_shadow.base.horizontal, box_shadow.base.vertical),
blur_radius: box_shadow.base.blur.0,
spread_radius: box_shadow.spread,
offset: Vector2D::new(Au::from(box_shadow.base.horizontal),
Au::from(box_shadow.base.vertical)),
blur_radius: Au::from(box_shadow.base.blur),
spread_radius: Au::from(box_shadow.spread),
border_radius: model::specified_border_radius(style.get_border()
.border_top_left_radius,
absolute_bounds.size).width,
@ -1596,7 +1598,7 @@ impl FragmentDisplayListBuilding for Fragment {
clip: &Rect<Au>) {
use style::values::Either;
let width = style.get_outline().outline_width.0;
let width = Au::from(style.get_outline().outline_width);
if width == Au(0) {
return
}
@ -1610,7 +1612,7 @@ impl FragmentDisplayListBuilding for Fragment {
// Outlines are not accounted for in the dimensions of the border box, so adjust the
// absolute bounds.
let mut bounds = *bounds;
let offset = width + style.get_outline().outline_offset;
let offset = width + Au::from(style.get_outline().outline_offset);
bounds.origin.x = bounds.origin.x - offset;
bounds.origin.y = bounds.origin.y - offset;
bounds.size.width = bounds.size.width + offset + offset;
@ -2139,8 +2141,8 @@ impl FragmentDisplayListBuilding for Fragment {
for shadow in text_shadows.iter().rev() {
state.add_display_item(DisplayItem::PushTextShadow(box PushTextShadowDisplayItem {
base: base.clone(),
blur_radius: shadow.blur.0,
offset: Vector2D::new(shadow.horizontal, shadow.vertical),
blur_radius: Au::from(shadow.blur),
offset: Vector2D::new(Au::from(shadow.horizontal), Au::from(shadow.vertical)),
color: shadow.color.unwrap_or(self.style().get_color().color).to_gfx_color(),
}));
}
@ -2690,11 +2692,13 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
}
let clip_origin = Point2D::new(stacking_relative_border_box.origin.x +
style_clip_rect.left.unwrap_or(Au(0)),
style_clip_rect.left.map(Au::from).unwrap_or(Au(0)),
stacking_relative_border_box.origin.y +
style_clip_rect.top.unwrap_or(Au(0)));
let right = style_clip_rect.right.unwrap_or(stacking_relative_border_box.size.width);
let bottom = style_clip_rect.bottom.unwrap_or(stacking_relative_border_box.size.height);
style_clip_rect.top.map(Au::from).unwrap_or(Au(0)));
let right = style_clip_rect.right.map(Au::from)
.unwrap_or(stacking_relative_border_box.size.width);
let bottom = style_clip_rect.bottom.map(Au::from)
.unwrap_or(stacking_relative_border_box.size.height);
let clip_size = Size2D::new(right - clip_origin.x, bottom - clip_origin.y);
// We use the node id to create scroll roots for overflow properties, so we