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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set expandtab shiftwidth=2 tabstop=2: */
/* 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 "StyleInfo.h"
#include "mozilla/dom/Element.h"
#include "nsComputedDOMStyle.h"
#include "nsCSSProps.h"
#include "nsIFrame.h"
using namespace mozilla;
using namespace mozilla::a11y;
StyleInfo::StyleInfo(dom::Element* aElement) : mElement(aElement) {
mComputedStyle = nsComputedDOMStyle::GetComputedStyleNoFlush(aElement);
}
already_AddRefed<nsAtom> StyleInfo::Display() {
nsAutoCString value;
mComputedStyle->GetComputedPropertyValue(eCSSProperty_display, value);
RefPtr<nsAtom> atomVal = NS_Atomize(value);
return atomVal.forget();
}
already_AddRefed<nsAtom> StyleInfo::TextAlign() {
nsAutoCString value;
mComputedStyle->GetComputedPropertyValue(eCSSProperty_text_align, value);
RefPtr<nsAtom> atomVal = NS_Atomize(value);
return atomVal.forget();
}
mozilla::LengthPercentage StyleInfo::TextIndent() {
return mComputedStyle->StyleText()->mTextIndent;
}
CSSCoord StyleInfo::Margin(Side aSide) {
MOZ_ASSERT(mElement->GetPrimaryFrame(),
" mElement->GetPrimaryFrame() needs to be valid pointer");
nsIFrame* frame = mElement->GetPrimaryFrame();
// This is here only to guarantee that we do the same as getComputedStyle
// does, so that we don't hit precision errors in tests.
auto& margin = frame->StyleMargin()->mMargin.Get(aSide);
if (margin.ConvertsToLength()) {
return margin.AsLengthPercentage().ToLengthInCSSPixels();
}
nscoord coordVal = frame->GetUsedMargin().Side(aSide);
return CSSPixel::FromAppUnits(coordVal);
}
void StyleInfo::FormatColor(const nscolor& aValue, nsAString& aFormattedValue) {
// Combine the string like rgb(R, G, B) from nscolor.
aFormattedValue.AppendLiteral("rgb(");
aFormattedValue.AppendInt(NS_GET_R(aValue));
aFormattedValue.AppendLiteral(", ");
aFormattedValue.AppendInt(NS_GET_G(aValue));
aFormattedValue.AppendLiteral(", ");
aFormattedValue.AppendInt(NS_GET_B(aValue));
aFormattedValue.Append(')');
}
already_AddRefed<nsAtom> StyleInfo::TextDecorationStyleToAtom(uint8_t aValue) {
// TODO: When these are enum classes that rust also understands we should just
// make an FFI call here.
switch (aValue) {
case NS_STYLE_TEXT_DECORATION_STYLE_NONE:
return NS_Atomize("-moz-none");
case NS_STYLE_TEXT_DECORATION_STYLE_SOLID:
return NS_Atomize("solid");
case NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE:
return NS_Atomize("double");
case NS_STYLE_TEXT_DECORATION_STYLE_DOTTED:
return NS_Atomize("dotted");
case NS_STYLE_TEXT_DECORATION_STYLE_DASHED:
return NS_Atomize("dashed");
case NS_STYLE_TEXT_DECORATION_STYLE_WAVY:
return NS_Atomize("wavy");
default:
MOZ_ASSERT_UNREACHABLE("Unknown decoration style");
break;
}
return nullptr;
}