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Auto merge of #5988 - Ms2ger:preshints, r=pcwalton
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This commit is contained in:
bors-servo
commit
8fa604be9d
4 changed files with 117 additions and 200 deletions
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@ -59,10 +59,13 @@ use dom::virtualmethods::{VirtualMethods, vtable_for};
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use devtools_traits::AttrInfo;
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use style;
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use style::legacy::{UnsignedIntegerAttribute, IntegerAttribute, LengthAttribute, from_declaration};
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use style::legacy::{UnsignedIntegerAttribute, from_declaration};
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use style::properties::{PropertyDeclarationBlock, PropertyDeclaration, parse_style_attribute};
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use style::properties::DeclaredValue::SpecifiedValue;
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use style::values::specified::CSSColor;
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use style::properties::longhands::{self, border_spacing};
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use style::values::CSSFloat;
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use style::values::specified::{self, CSSColor};
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use util::geometry::Au;
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use util::namespace;
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use util::smallvec::VecLike;
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use util::str::{DOMString, LengthOrPercentageOrAuto};
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@ -162,10 +165,6 @@ pub trait RawLayoutElementHelpers {
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unsafe fn synthesize_presentational_hints_for_legacy_attributes<V>(&self, &mut V)
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where V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>;
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unsafe fn get_length_attribute_for_layout(&self, length_attribute: LengthAttribute)
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-> LengthOrPercentageOrAuto;
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unsafe fn get_integer_attribute_for_layout(&self, integer_attribute: IntegerAttribute)
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-> Option<i32>;
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unsafe fn get_checked_state_for_layout(&self) -> bool;
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unsafe fn get_indeterminate_state_for_layout(&self) -> bool;
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unsafe fn get_unsigned_integer_attribute_for_layout(&self, attribute: UnsignedIntegerAttribute)
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@ -260,51 +259,120 @@ impl RawLayoutElementHelpers for Element {
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PropertyDeclaration::BackgroundColor(SpecifiedValue(
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CSSColor { parsed: Color::RGBA(color), authored: None }))));
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}
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}
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#[inline]
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unsafe fn get_length_attribute_for_layout(&self, length_attribute: LengthAttribute)
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-> LengthOrPercentageOrAuto {
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match length_attribute {
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LengthAttribute::Width => {
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if self.is_htmltableelement() {
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let this: &HTMLTableElement = mem::transmute(self);
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this.get_width()
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} else if self.is_htmltablecellelement() {
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let this: &HTMLTableCellElement = mem::transmute(self);
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this.get_width()
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} else {
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panic!("I'm not a table or table cell!")
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let cellspacing = if self.is_htmltableelement() {
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let this: &HTMLTableElement = mem::transmute(self);
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this.get_cellspacing()
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} else {
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None
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};
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if let Some(cellspacing) = cellspacing {
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let width_value = specified::Length::Absolute(Au::from_px(cellspacing as i32));
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hints.push(from_declaration(
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PropertyDeclaration::BorderSpacing(SpecifiedValue(
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border_spacing::SpecifiedValue {
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horizontal: width_value,
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vertical: width_value,
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}))));
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}
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let size = if self.is_htmlinputelement() {
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// FIXME(pcwalton): More use of atoms, please!
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// FIXME(Ms2ger): this is nonsense! Invalid values also end up as
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// a text field
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match self.get_attr_val_for_layout(&ns!(""), &atom!("type")) {
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Some("text") | Some("password") => {
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let this: &HTMLInputElement = mem::transmute(self);
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match this.get_size_for_layout() {
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0 => None,
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s => Some(s as i32),
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}
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}
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_ => None
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}
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} else {
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None
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};
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if let Some(size) = size {
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let value = specified::Length::ServoCharacterWidth(
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specified::CharacterWidth(size));
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hints.push(from_declaration(
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PropertyDeclaration::Width(SpecifiedValue(
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specified::LengthOrPercentageOrAuto::Length(value)))));
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}
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let width = if self.is_htmltableelement() {
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let this: &HTMLTableElement = mem::transmute(self);
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this.get_width()
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} else if self.is_htmltabledatacellelement() {
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let this: &HTMLTableCellElement = mem::transmute(self);
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this.get_width()
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} else {
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LengthOrPercentageOrAuto::Auto
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};
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match width {
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LengthOrPercentageOrAuto::Auto => {}
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LengthOrPercentageOrAuto::Percentage(percentage) => {
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let width_value = specified::LengthOrPercentageOrAuto::Percentage(percentage);
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hints.push(from_declaration(
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PropertyDeclaration::Width(SpecifiedValue(width_value))));
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}
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LengthOrPercentageOrAuto::Length(length) => {
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let width_value = specified::LengthOrPercentageOrAuto::Length(specified::Length::Absolute(length));
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hints.push(from_declaration(
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PropertyDeclaration::Width(SpecifiedValue(width_value))));
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}
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}
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}
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#[inline]
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unsafe fn get_integer_attribute_for_layout(&self, integer_attribute: IntegerAttribute)
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-> Option<i32> {
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match integer_attribute {
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IntegerAttribute::Size => {
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if !self.is_htmlinputelement() {
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panic!("I'm not a form input!")
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}
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let this: &HTMLInputElement = mem::transmute(self);
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Some(this.get_size_for_layout() as i32)
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let cols = if self.is_htmltextareaelement() {
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let this: &HTMLTextAreaElement = mem::transmute(self);
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match this.get_cols_for_layout() {
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0 => None,
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c => Some(c as i32),
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}
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IntegerAttribute::Cols => {
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if !self.is_htmltextareaelement() {
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panic!("I'm not a textarea element!")
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}
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let this: &HTMLTextAreaElement = mem::transmute(self);
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Some(this.get_cols_for_layout() as i32)
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}
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IntegerAttribute::Rows => {
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if !self.is_htmltextareaelement() {
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panic!("I'm not a textarea element!")
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}
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let this: &HTMLTextAreaElement = mem::transmute(self);
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Some(this.get_rows_for_layout() as i32)
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} else {
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None
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};
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if let Some(cols) = cols {
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// TODO(mttr) ServoCharacterWidth uses the size math for <input type="text">, but
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// the math for <textarea> is a little different since we need to take
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// scrollbar size into consideration (but we don't have a scrollbar yet!)
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//
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// https://html.spec.whatwg.org/multipage/#textarea-effective-width
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let value = specified::Length::ServoCharacterWidth(specified::CharacterWidth(cols));
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hints.push(from_declaration(
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PropertyDeclaration::Width(SpecifiedValue(
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specified::LengthOrPercentageOrAuto::Length(value)))));
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}
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let rows = if self.is_htmltextareaelement() {
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let this: &HTMLTextAreaElement = mem::transmute(self);
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match this.get_rows_for_layout() {
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0 => None,
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r => Some(r as i32),
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}
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} else {
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None
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};
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if let Some(rows) = rows {
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// TODO(mttr) This should take scrollbar size into consideration.
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//
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// https://html.spec.whatwg.org/multipage/#textarea-effective-height
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let value = specified::Length::FontRelative(specified::FontRelativeLength::Em(rows as CSSFloat));
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hints.push(from_declaration(
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PropertyDeclaration::Height(SpecifiedValue(
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longhands::height::SpecifiedValue(
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specified::LengthOrPercentageOrAuto::Length(value))))));
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}
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}
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@ -345,16 +413,6 @@ impl RawLayoutElementHelpers for Element {
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None
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}
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}
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UnsignedIntegerAttribute::CellSpacing => {
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if self.is_htmltableelement() {
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let this: &HTMLTableElement = mem::transmute(self);
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this.get_cellspacing()
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} else {
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// Don't panic since `display` can cause this to be called on arbitrary
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// elements.
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None
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}
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}
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UnsignedIntegerAttribute::ColSpan => {
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if self.is_htmltablecellelement() {
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let this: &HTMLTableCellElement = mem::transmute(self);
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