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Refactor a bit and compute vertical margins as well.

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Patrick Walton 2013-05-30 22:56:15 -07:00
parent 708f9b4db5
commit 0b91af3677
3 changed files with 54 additions and 30 deletions
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47
src/components/main/layout/block.rs
View file

@ -106,7 +106,9 @@ impl BlockFlowData {
these widths will not include child elements, just padding etc. */
self.box.map(|&box| {
//Can compute border width here since it doesn't depend on anything
box.compute_borders();
do box.with_model |model| {
model.compute_borders(box.style())
}
min_width = min_width.add(&box.get_min_width(ctx));
pref_width = pref_width.add(&box.get_pref_width(ctx));
});
@ -182,16 +184,37 @@ impl BlockFlowData {
let mut x_offset = Au(0);
self.box.map(|&box| {
box.compute_padding(remaining_width);
let available_width = remaining_width - box.get_noncontent_width();
do box.with_model |model| {
model.compute_padding(box.style(), remaining_width);
do box.compute_width(remaining_width) |width, left_margin, right_margin| {
self.compute_horiz(width, left_margin, right_margin, available_width)
let available_width = remaining_width - model.noncontent_width();
let margin_top = MaybeAuto::from_margin(box.style().margin_top()).spec_or_default(Au(0));
let margin_bottom = MaybeAuto::from_margin(box.style().margin_bottom()).spec_or_default(Au(0));
let (width, margin_left, margin_right) = (MaybeAuto::from_width(box.style().width()),
MaybeAuto::from_margin(box.style().margin_left()),
MaybeAuto::from_margin(box.style().margin_right()));
let (width, margin_left, margin_right) =
self.compute_horiz(width, margin_left, margin_right, available_width);
model.margin.top = margin_top;
model.margin.right = margin_right;
model.margin.bottom = margin_bottom;
model.margin.left = margin_left;
x_offset = model.offset();
remaining_width = remaining_width - model.noncontent_width();
}
let content_box = box.content_box();
x_offset = content_box.origin.x;
remaining_width = content_box.size.width;
do box.with_mut_base |base| {
let bp_width = base.model.padding.left + base.model.padding.right +
base.model.border.left + base.model.border.right;
base.position.size.width = remaining_width + bp_width;
base.position.origin.x = base.model.margin.left;
}
});
for BlockFlow(self).each_child |kid| {
@ -222,15 +245,7 @@ impl BlockFlowData {
self.common.position.size.height = height;
let _used_top = Au(0);
let _used_bot = Au(0);
self.box.map(|&box| {
do box.with_mut_base |base| {
base.position.origin.y = Au(0);
base.position.size.height = height;
let (_used_top, _used_bot) = box.get_used_height();
}
});
}

15
src/components/main/layout/box.rs
View file

@ -8,7 +8,7 @@ use css::node_style::StyledNode;
use layout::context::LayoutContext;
use layout::display_list_builder::{DisplayListBuilder, ExtraDisplayListData, ToGfxColor};
use layout::flow::FlowContext;
use layout::model::{BoxModel,MaybeAuto};
use layout::model::{BoxModel};
use layout::text;
use core::cell::Cell;
@ -487,16 +487,15 @@ pub impl RenderBox {
}
}
fn with_model<R>(&self, callback: &fn(&mut BoxModel) -> R) -> R {
do self.with_imm_base |base| {
callback(&mut base.model)
}
}
/// The box formed by the content edge as defined in CSS 2.1 § 8.1. Coordinates are relative to
/// the owning flow.
fn content_box(&self) -> Rect<Au> {
do self.with_imm_base |base| {
let origin = Point2D(base.position.origin.x + base.model.border.left + base.model.padding.left,
base.position.origin.y);
let size = Size2D(base.position.size.width - self.get_noncontent_width(),
base.position.size.height);
Rect(origin, size)
}
}
/// The box formed by the border edge as defined in CSS 2.1 § 8.1. Coordinates are relative to

22
src/components/main/layout/model.rs
View file

@ -27,7 +27,7 @@ pub struct BoxModel {
border: SideOffsets2D<Au>,
padding: SideOffsets2D<Au>,
margin: SideOffsets2D<Au>,
content_width: Au,
cb_width: Au,
}
/// Useful helper data type when computing values for blocks and positioned elements.
@ -75,13 +75,12 @@ impl Zero for BoxModel {
border: Zero::zero(),
padding: Zero::zero(),
margin: Zero::zero(),
content_width: Zero::zero(),
cb_width: Zero::zero(),
}
}
fn is_zero(&self) -> bool {
self.padding.is_zero() && self.border.is_zero() && self.margin.is_zero() &&
self.content_width.is_zero()
self.padding.is_zero() && self.border.is_zero() && self.margin.is_zero()
}
}
@ -102,8 +101,18 @@ impl BoxModel {
self.padding.left = self.compute_padding_length(style.padding_left(), cb_width);
}
pub fn noncontent_width(&self) -> Au {
let left = self.margin.left + self.border.left + self.padding.left;
let right = self.margin.right + self.border.right + self.padding.right;
left + right
}
pub fn offset(&self) -> Au {
self.margin.left + self.border.left + self.padding.left
}
/// Helper function to compute the border width in app units from the CSS border width.
fn compute_border_width(&self, width: CSSBorderWidth) -> Au {
priv fn compute_border_width(&self, width: CSSBorderWidth) -> Au {
match width {
CSSBorderWidthLength(Px(v)) |
CSSBorderWidthLength(Em(v)) |
@ -117,7 +126,7 @@ impl BoxModel {
}
}
fn compute_padding_length(&self, padding: CSSPadding, cb_width: Au) -> Au{
priv fn compute_padding_length(&self, padding: CSSPadding, cb_width: Au) -> Au {
match padding {
CSSPaddingLength(Px(v)) |
CSSPaddingLength(Pt(v)) |
@ -128,6 +137,7 @@ impl BoxModel {
CSSPaddingPercentage(p) => cb_width.scale_by(p)
}
}
}
//