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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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12
components/layout/fragment.rs
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@ -2574,14 +2574,16 @@ impl Fragment {
// Box shadows cause us to draw outside our border box.
for box_shadow in &self.style().get_effects().box_shadow.0 {
let offset = Vector2D::new(box_shadow.base.horizontal, box_shadow.base.vertical);
let inflation = box_shadow.spread + box_shadow.base.blur.0 * BLUR_INFLATION_FACTOR;
let offset = Vector2D::new(Au::from(box_shadow.base.horizontal),
Au::from(box_shadow.base.vertical));
let inflation = Au::from(box_shadow.spread) +
Au::from(box_shadow.base.blur) * BLUR_INFLATION_FACTOR;
overflow.paint = overflow.paint.union(&border_box.translate(&offset)
.inflate(inflation, inflation))
}
// Outlines cause us to draw outside our border box.
let outline_width = self.style.get_outline().outline_width.0;
let outline_width = Au::from(self.style.get_outline().outline_width);
if outline_width != Au(0) {
overflow.paint = overflow.paint.union(&border_box.inflate(outline_width,
outline_width))
@ -2880,7 +2882,7 @@ impl Fragment {
transform_origin.vertical
.to_used_value(stacking_relative_border_box.size.height)
.to_f32_px();
let transform_origin_z = transform_origin.depth.to_f32_px();
let transform_origin_z = transform_origin.depth.px();
let pre_transform = Transform3D::create_translation(transform_origin_x,
transform_origin_y,
@ -2913,7 +2915,7 @@ impl Fragment {
-perspective_origin.y,
0.0);
let perspective_matrix = TransformList::create_perspective_matrix(length);
let perspective_matrix = TransformList::create_perspective_matrix(length.px());
Some(pre_transform.pre_mul(&perspective_matrix).pre_mul(&post_transform))
}