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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <vcl/accessibility/AccessibleTextAttributeHelper.hxx>
#include <com/sun/star/accessibility/AccessibleTextType.hpp>
#include <com/sun/star/accessibility/XAccessibleTextMarkup.hpp>
#include <com/sun/star/awt/FontSlant.hpp>
#include <com/sun/star/awt/FontStrikeout.hpp>
#include <com/sun/star/awt/FontUnderline.hpp>
#include <com/sun/star/awt/FontWeight.hpp>
#include <com/sun/star/style/ParagraphAdjust.hpp>
#include <com/sun/star/text/TextMarkupType.hpp>
#include <o3tl/any.hxx>
#include <tools/color.hxx>
namespace
{
OUString lcl_ConvertCharEscapement(sal_Int16 nEscapement)
{
if (nEscapement > 0)
return "super";
if (nEscapement < 0)
return "sub";
return "baseline";
}
OUString lcl_ConverCharStrikeout(sal_Int16 nStrikeout)
{
OUString sTextLineThroughStyle;
OUString sTextLineThroughText;
OUString sTextLineThroughType;
OUString sTextLineThroughWidth;
switch (nStrikeout)
{
case css::awt::FontStrikeout::BOLD:
sTextLineThroughType = "single";
sTextLineThroughWidth = "bold";
break;
case css::awt::FontStrikeout::DONTKNOW:
break;
case css::awt::FontStrikeout::DOUBLE:
sTextLineThroughType = "double";
break;
case css::awt::FontStrikeout::NONE:
sTextLineThroughStyle = "none";
break;
case css::awt::FontStrikeout::SINGLE:
sTextLineThroughType = "single";
break;
case css::awt::FontStrikeout::SLASH:
sTextLineThroughText = u"/"_ustr;
break;
case css::awt::FontStrikeout::X:
sTextLineThroughText = u"X"_ustr;
break;
default:
assert(false && "Unhandled strikeout type");
}
OUString sResult;
if (!sTextLineThroughStyle.isEmpty())
sResult += u"text-line-through-style:"_ustr + sTextLineThroughStyle + ";";
if (!sTextLineThroughText.isEmpty())
sResult += u"text-line-through-text:"_ustr + sTextLineThroughText + ";";
if (!sTextLineThroughType.isEmpty())
sResult += u"text-line-through-type:"_ustr + sTextLineThroughType + ";";
if (!sTextLineThroughWidth.isEmpty())
sResult += u"text-line-through-width:"_ustr + sTextLineThroughWidth + ";";
return sResult;
}
OUString lcl_convertFontWeight(double fontWeight)
{
if (fontWeight == css::awt::FontWeight::THIN || fontWeight == css::awt::FontWeight::ULTRALIGHT)
return "100";
if (fontWeight == css::awt::FontWeight::LIGHT)
return "200";
if (fontWeight == css::awt::FontWeight::SEMILIGHT)
return "300";
if (fontWeight == css::awt::FontWeight::NORMAL)
return "normal";
if (fontWeight == css::awt::FontWeight::SEMIBOLD)
return "500";
if (fontWeight == css::awt::FontWeight::BOLD)
return "bold";
if (fontWeight == css::awt::FontWeight::ULTRABOLD)
return "800";
if (fontWeight == css::awt::FontWeight::BLACK)
return "900";
// awt::FontWeight::DONTKNOW || fontWeight == awt::FontWeight::NORMAL
return "normal";
}
OUString lcl_ConvertFontSlant(css::awt::FontSlant eFontSlant)
{
switch (eFontSlant)
{
case css::awt::FontSlant::FontSlant_NONE:
return "normal";
case css::awt::FontSlant::FontSlant_OBLIQUE:
case css::awt::FontSlant::FontSlant_REVERSE_OBLIQUE:
return "oblique";
case css::awt::FontSlant::FontSlant_ITALIC:
case css::awt::FontSlant::FontSlant_REVERSE_ITALIC:
return "italic";
case css::awt::FontSlant::FontSlant_DONTKNOW:
case css::awt::FontSlant::FontSlant_MAKE_FIXED_SIZE:
default:
return "";
}
}
// s. https://wiki.linuxfoundation.org/accessibility/iaccessible2/textattributes
// for values
void lcl_ConvertFontUnderline(sal_Int16 nFontUnderline, OUString& rUnderlineStyle,
OUString& rUnderlineType, OUString& rUnderlineWidth)
{
rUnderlineStyle = u""_ustr;
rUnderlineType = u"single"_ustr;
rUnderlineWidth = u"auto"_ustr;
switch (nFontUnderline)
{
case css::awt::FontUnderline::BOLD:
rUnderlineWidth = u"bold"_ustr;
return;
case css::awt::FontUnderline::BOLDDASH:
rUnderlineWidth = u"bold"_ustr;
rUnderlineStyle = u"dash"_ustr;
return;
case css::awt::FontUnderline::BOLDDASHDOT:
rUnderlineWidth = u"bold"_ustr;
rUnderlineStyle = u"dot-dash"_ustr;
return;
case css::awt::FontUnderline::BOLDDASHDOTDOT:
rUnderlineWidth = u"bold"_ustr;
rUnderlineStyle = u"dot-dot-dash"_ustr;
return;
case css::awt::FontUnderline::BOLDDOTTED:
rUnderlineWidth = u"bold"_ustr;
rUnderlineStyle = u"dotted"_ustr;
return;
case css::awt::FontUnderline::BOLDLONGDASH:
rUnderlineWidth = u"bold"_ustr;
rUnderlineStyle = u"long-dash"_ustr;
return;
case css::awt::FontUnderline::BOLDWAVE:
rUnderlineWidth = u"bold"_ustr;
rUnderlineStyle = u"wave"_ustr;
return;
case css::awt::FontUnderline::DASH:
rUnderlineStyle = u"dash"_ustr;
return;
case css::awt::FontUnderline::DASHDOT:
rUnderlineStyle = u"dot-dash"_ustr;
return;
case css::awt::FontUnderline::DASHDOTDOT:
rUnderlineStyle = u"dot-dot-dash"_ustr;
return;
case css::awt::FontUnderline::DONTKNOW:
rUnderlineWidth = u""_ustr;
rUnderlineStyle = u""_ustr;
rUnderlineType = u""_ustr;
return;
case css::awt::FontUnderline::DOTTED:
rUnderlineStyle = u"dotted"_ustr;
return;
case css::awt::FontUnderline::DOUBLE:
rUnderlineType = u"double"_ustr;
return;
case css::awt::FontUnderline::DOUBLEWAVE:
rUnderlineStyle = u"wave"_ustr;
rUnderlineType = u"double"_ustr;
return;
case css::awt::FontUnderline::LONGDASH:
rUnderlineStyle = u"long-dash"_ustr;
return;
case css::awt::FontUnderline::NONE:
rUnderlineWidth = u"none"_ustr;
rUnderlineStyle = u"none"_ustr;
rUnderlineType = u"none"_ustr;
return;
case css::awt::FontUnderline::SINGLE:
rUnderlineType = u"single"_ustr;
return;
case css::awt::FontUnderline::SMALLWAVE:
case css::awt::FontUnderline::WAVE:
rUnderlineStyle = u"wave"_ustr;
return;
default:
assert(false && "Unhandled font underline type");
}
}
/** Converts Color to "rgb(r,g,b)" as specified in https://wiki.linuxfoundation.org/accessibility/iaccessible2/textattributes. */
OUString lcl_ConvertColor(Color aColor)
{
return u"rgb(" + OUString::number(aColor.GetRed()) + u"\\,"
+ OUString::number(aColor.GetGreen()) + u"\\," + OUString::number(aColor.GetBlue())
+ u")";
}
OUString lcl_ConvertParagraphAdjust(css::style::ParagraphAdjust eParaAdjust)
{
switch (eParaAdjust)
{
case css::style::ParagraphAdjust_LEFT:
return u"left"_ustr;
case css::style::ParagraphAdjust_RIGHT:
return u"right"_ustr;
case css::style::ParagraphAdjust_BLOCK:
case css::style::ParagraphAdjust_STRETCH:
return u"justify"_ustr;
case css::style::ParagraphAdjust_CENTER:
return u"center"_ustr;
default:
assert(false && "Unhandled ParagraphAdjust value");
return u""_ustr;
}
}
}
OUString AccessibleTextAttributeHelper::ConvertUnoToIAccessible2TextAttributes(
const css::uno::Sequence<css::beans::PropertyValue>& rUnoAttributes,
IA2AttributeType eAttributeType)
{
OUString aRet;
for (css::beans::PropertyValue const& prop : rUnoAttributes)
{
OUString sAttribute;
OUString sValue;
if (eAttributeType & IA2AttributeType::TextAttributes)
{
if (prop.Name == "CharBackColor")
{
sAttribute = "background-color";
sValue = lcl_ConvertColor(
Color(ColorTransparency, *o3tl::doAccess<sal_Int32>(prop.Value)));
}
else if (prop.Name == "CharColor")
{
sAttribute = "color";
sValue = lcl_ConvertColor(
Color(ColorTransparency, *o3tl::doAccess<sal_Int32>(prop.Value)));
}
else if (prop.Name == "CharEscapement")
{
sAttribute = "text-position";
const sal_Int16 nEscapement = *o3tl::doAccess<sal_Int16>(prop.Value);
sValue = lcl_ConvertCharEscapement(nEscapement);
}
else if (prop.Name == "CharFontName")
{
sAttribute = "font-family";
sValue = *o3tl::doAccess<OUString>(prop.Value);
}
else if (prop.Name == "CharHeight")
{
sAttribute = "font-size";
sValue = OUString::number(*o3tl::doAccess<double>(prop.Value)) + "pt";
}
else if (prop.Name == "CharPosture")
{
sAttribute = "font-style";
const css::awt::FontSlant eFontSlant
= *o3tl::doAccess<css::awt::FontSlant>(prop.Value);
sValue = lcl_ConvertFontSlant(eFontSlant);
}
else if (prop.Name == "CharStrikeout")
{
const sal_Int16 nStrikeout = *o3tl::doAccess<sal_Int16>(prop.Value);
aRet += lcl_ConverCharStrikeout(nStrikeout);
}
else if (prop.Name == "CharUnderline")
{
OUString sUnderlineStyle;
OUString sUnderlineType;
OUString sUnderlineWidth;
const sal_Int16 nUnderline = *o3tl::doAccess<sal_Int16>(prop.Value);
lcl_ConvertFontUnderline(nUnderline, sUnderlineStyle, sUnderlineType,
sUnderlineWidth);
// leave 'sAttribute' and 'sName' empty, set all attributes here
if (!sUnderlineStyle.isEmpty())
aRet += u"text-underline-style:" + sUnderlineStyle + ";";
if (!sUnderlineType.isEmpty())
aRet += u"text-underline-type:" + sUnderlineType + ";";
if (!sUnderlineWidth.isEmpty())
aRet += u"text-underline-width:" + sUnderlineWidth + ";";
}
else if (prop.Name == "CharWeight")
{
sAttribute = "font-weight";
sValue = lcl_convertFontWeight(*o3tl::doAccess<double>(prop.Value));
}
}
// so far, "ParaAdjust" is the only UNO text attribute that
// maps to an object attribute for IAccessible2 ("text-align")
if (sAttribute.isEmpty() && (eAttributeType & IA2AttributeType::ObjectAttributes)
&& prop.Name == "ParaAdjust")
{
sAttribute = "text-align";
const css::style::ParagraphAdjust eParaAdjust
= static_cast<css::style::ParagraphAdjust>(*o3tl::doAccess<sal_Int16>(prop.Value));
sValue = lcl_ConvertParagraphAdjust(eParaAdjust);
}
if (!sAttribute.isEmpty() && !sValue.isEmpty())
aRet += sAttribute + ":" + sValue + ";";
}
return aRet;
}
OUString AccessibleTextAttributeHelper::GetIAccessible2TextAttributes(
css::uno::Reference<css::accessibility::XAccessibleText> xText, IA2AttributeType eAttributeType,
sal_Int32 nOffset, sal_Int32& rStartOffset, sal_Int32& rEndOffset)
{
assert(xText.is());
const css::uno::Sequence<css::beans::PropertyValue> attribs
= xText->getCharacterAttributes(nOffset, css::uno::Sequence<OUString>());
OUString sAttributes = ConvertUnoToIAccessible2TextAttributes(attribs, eAttributeType);
css::accessibility::TextSegment aAttributeRun
= xText->getTextAtIndex(nOffset, css::accessibility::AccessibleTextType::ATTRIBUTE_RUN);
rStartOffset = aAttributeRun.SegmentStart;
rEndOffset = aAttributeRun.SegmentEnd;
// report spelling error as "invalid:spelling;" IA2 text attribute and
// adapt start/end index as necessary
css::uno::Reference<css::accessibility::XAccessibleTextMarkup> xTextMarkup(xText,
css::uno::UNO_QUERY);
if ((eAttributeType & IA2AttributeType::TextAttributes) && xTextMarkup.is())
{
bool bInvalidSpelling = false;
const sal_Int32 nMarkupCount(
xTextMarkup->getTextMarkupCount(css::text::TextMarkupType::SPELLCHECK));
for (sal_Int32 nMarkupIndex = 0; nMarkupIndex < nMarkupCount; ++nMarkupIndex)
{
const css::accessibility::TextSegment aTextSegment
= xTextMarkup->getTextMarkup(nMarkupIndex, css::text::TextMarkupType::SPELLCHECK);
const sal_Int32 nStartOffsetTextMarkup = aTextSegment.SegmentStart;
const sal_Int32 nEndOffsetTextMarkup = aTextSegment.SegmentEnd;
if (nStartOffsetTextMarkup <= nOffset)
{
if (nOffset < nEndOffsetTextMarkup)
{
// offset is inside invalid spelling
rStartOffset = ::std::max(rStartOffset, nStartOffsetTextMarkup);
rEndOffset = ::std::min(rEndOffset, nEndOffsetTextMarkup);
bInvalidSpelling = true;
break;
}
else
{
rStartOffset = ::std::max(rStartOffset, nEndOffsetTextMarkup);
}
}
else
{
rEndOffset = ::std::min(rEndOffset, nStartOffsetTextMarkup);
}
}
if (bInvalidSpelling)
sAttributes += u"invalid:spelling;"_ustr;
}
return sAttributes;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
|
