gecko-dev/dom/html/HTMLHRElement.cpp
Manish Goregaokar f61fd43189 Bug 1334330 - Part 9: stylo: Use GenericSpecifiedValue abstraction for <hr>; r=bz,emilio
MozReview-Commit-ID: CvKYf9To9mD

--HG--
extra : rebase_source : 53ad6beff484ab295400d5ae1130e14af49af10b
2017-01-26 16:51:01 -08:00

223 lines
7.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/HTMLHRElement.h"
#include "mozilla/dom/HTMLHRElementBinding.h"
NS_IMPL_NS_NEW_HTML_ELEMENT(HR)
namespace mozilla {
namespace dom {
HTMLHRElement::HTMLHRElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
: nsGenericHTMLElement(aNodeInfo)
{
}
HTMLHRElement::~HTMLHRElement()
{
}
NS_IMPL_ISUPPORTS_INHERITED(HTMLHRElement, nsGenericHTMLElement,
nsIDOMHTMLHRElement)
NS_IMPL_ELEMENT_CLONE(HTMLHRElement)
NS_IMPL_STRING_ATTR(HTMLHRElement, Align, align)
NS_IMPL_BOOL_ATTR(HTMLHRElement, NoShade, noshade)
NS_IMPL_STRING_ATTR(HTMLHRElement, Size, size)
NS_IMPL_STRING_ATTR(HTMLHRElement, Width, width)
NS_IMPL_STRING_ATTR(HTMLHRElement, Color, color)
bool
HTMLHRElement::ParseAttribute(int32_t aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult)
{
static const nsAttrValue::EnumTable kAlignTable[] = {
{ "left", NS_STYLE_TEXT_ALIGN_LEFT },
{ "right", NS_STYLE_TEXT_ALIGN_RIGHT },
{ "center", NS_STYLE_TEXT_ALIGN_CENTER },
{ nullptr, 0 }
};
if (aNamespaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::width) {
return aResult.ParseSpecialIntValue(aValue);
}
if (aAttribute == nsGkAtoms::size) {
return aResult.ParseIntWithBounds(aValue, 1, 1000);
}
if (aAttribute == nsGkAtoms::align) {
return aResult.ParseEnumValue(aValue, kAlignTable, false);
}
if (aAttribute == nsGkAtoms::color) {
return aResult.ParseColor(aValue);
}
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aResult);
}
void
HTMLHRElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
GenericSpecifiedValues* aData)
{
bool noshade = false;
const nsAttrValue* colorValue = aAttributes->GetAttr(nsGkAtoms::color);
nscolor color;
bool colorIsSet = colorValue && colorValue->GetColorValue(color);
if (aData->ShouldComputeStyleStruct(NS_STYLE_INHERIT_BIT(Position) |
NS_STYLE_INHERIT_BIT(Border))) {
if (colorIsSet) {
noshade = true;
} else {
noshade = !!aAttributes->GetAttr(nsGkAtoms::noshade);
}
}
if (aData->ShouldComputeStyleStruct(NS_STYLE_INHERIT_BIT(Margin))) {
// align: enum
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::align);
if (value && value->Type() == nsAttrValue::eEnum) {
// Map align attribute into auto side margins
switch (value->GetEnumValue()) {
case NS_STYLE_TEXT_ALIGN_LEFT:
aData->SetPixelValueIfUnset(eCSSProperty_margin_left, 0.0f);
aData->SetAutoValueIfUnset(eCSSProperty_margin_right);
break;
case NS_STYLE_TEXT_ALIGN_RIGHT:
aData->SetAutoValueIfUnset(eCSSProperty_margin_left);
aData->SetPixelValueIfUnset(eCSSProperty_margin_right, 0.0f);
break;
case NS_STYLE_TEXT_ALIGN_CENTER:
aData->SetAutoValueIfUnset(eCSSProperty_margin_left);
aData->SetAutoValueIfUnset(eCSSProperty_margin_right);
break;
}
}
}
if (aData->ShouldComputeStyleStruct(NS_STYLE_INHERIT_BIT(Position))) {
if (!aData->PropertyIsSet(eCSSProperty_height)) {
// size: integer
if (noshade) {
// noshade case: size is set using the border
aData->SetAutoValue(eCSSProperty_height);
} else {
// normal case
// the height includes the top and bottom borders that are initially 1px.
// for size=1, html.css has a special case rule that makes this work by
// removing all but the top border.
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::size);
if (value && value->Type() == nsAttrValue::eInteger) {
aData->SetPixelValue(eCSSProperty_height, (float)value->GetIntegerValue());
} // else use default value from html.css
}
}
}
// if not noshade, border styles are dealt with by html.css
if (aData->ShouldComputeStyleStruct(NS_STYLE_INHERIT_BIT(Border)) && noshade) {
// size: integer
// if a size is set, use half of it per side, otherwise, use 1px per side
float sizePerSide;
bool allSides = true;
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::size);
if (value && value->Type() == nsAttrValue::eInteger) {
sizePerSide = (float)value->GetIntegerValue() / 2.0f;
if (sizePerSide < 1.0f) {
// XXX When the pixel bug is fixed, all the special casing for
// subpixel borders should be removed.
// In the meantime, this makes http://www.microsoft.com/ look right.
sizePerSide = 1.0f;
allSides = false;
}
} else {
sizePerSide = 1.0f; // default to a 2px high line
}
aData->SetPixelValueIfUnset(eCSSProperty_border_top_width, sizePerSide);
if (allSides) {
aData->SetPixelValueIfUnset(eCSSProperty_border_right_width, sizePerSide);
aData->SetPixelValueIfUnset(eCSSProperty_border_bottom_width, sizePerSide);
aData->SetPixelValueIfUnset(eCSSProperty_border_left_width, sizePerSide);
}
if (!aData->PropertyIsSet(eCSSProperty_border_top_style))
aData->SetKeywordValue(eCSSProperty_border_top_style,
NS_STYLE_BORDER_STYLE_SOLID);
if (allSides) {
aData->SetKeywordValueIfUnset(eCSSProperty_border_right_style,
NS_STYLE_BORDER_STYLE_SOLID);
aData->SetKeywordValueIfUnset(eCSSProperty_border_bottom_style,
NS_STYLE_BORDER_STYLE_SOLID);
aData->SetKeywordValueIfUnset(eCSSProperty_border_left_style,
NS_STYLE_BORDER_STYLE_SOLID);
// If it would be noticeable, set the border radius to
// 10000px on all corners; this triggers the clamping to make
// circular ends. This assumes the <hr> isn't larger than
// that in *both* dimensions.
for (const nsCSSPropertyID* props =
nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_radius);
*props != eCSSProperty_UNKNOWN; ++props) {
aData->SetPixelValueIfUnset(*props, 10000.0f);
}
}
}
if (aData->ShouldComputeStyleStruct(NS_STYLE_INHERIT_BIT(Color))) {
// color: a color
// (we got the color attribute earlier)
if (colorIsSet &&
aData->PresContext()->UseDocumentColors()) {
aData->SetColorValueIfUnset(eCSSProperty_color, color);
}
}
nsGenericHTMLElement::MapWidthAttributeInto(aAttributes, aData);
nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aData);
}
NS_IMETHODIMP_(bool)
HTMLHRElement::IsAttributeMapped(const nsIAtom* aAttribute) const
{
static const MappedAttributeEntry attributes[] = {
{ &nsGkAtoms::align },
{ &nsGkAtoms::width },
{ &nsGkAtoms::size },
{ &nsGkAtoms::color },
{ &nsGkAtoms::noshade },
{ nullptr },
};
static const MappedAttributeEntry* const map[] = {
attributes,
sCommonAttributeMap,
};
return FindAttributeDependence(aAttribute, map);
}
nsMapRuleToAttributesFunc
HTMLHRElement::GetAttributeMappingFunction() const
{
return &MapAttributesIntoRule;
}
JSObject*
HTMLHRElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return HTMLHRElementBinding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla