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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "fontpropertymanager.h"
#include "qtpropertymanager.h"
#include "qtvariantproperty.h"
#include "qtpropertybrowserutils_p.h"
#include <qdesigner_utils_p.h>
#include <QtCore/QCoreApplication>
#include <QtCore/QVariant>
#include <QtCore/QString>
#include <QtCore/QDebug>
#include <QtCore/QFile>
#include <QtCore/QTextStream>
#include <QtXml/QXmlStreamReader>
QT_BEGIN_NAMESPACE
namespace qdesigner_internal {
static const char *aliasingC[] = {
QT_TRANSLATE_NOOP("FontPropertyManager", "PreferDefault"),
QT_TRANSLATE_NOOP("FontPropertyManager", "NoAntialias"),
QT_TRANSLATE_NOOP("FontPropertyManager", "PreferAntialias")
};
FontPropertyManager::FontPropertyManager() :
m_createdFontProperty(0)
{
const int nameCount = sizeof(aliasingC)/sizeof(const char *);
for (int i = 0; i < nameCount; i++)
m_aliasingEnumNames.push_back(QCoreApplication::translate("FontPropertyManager", aliasingC[i]));
QString errorMessage;
if (!readFamilyMapping(&m_familyMappings, &errorMessage)) {
designerWarning(errorMessage);
}
}
void FontPropertyManager::preInitializeProperty(QtProperty *property,
int type,
ResetMap &resetMap)
{
if (m_createdFontProperty) {
PropertyToSubPropertiesMap::iterator it = m_propertyToFontSubProperties.find(m_createdFontProperty);
if (it == m_propertyToFontSubProperties.end())
it = m_propertyToFontSubProperties.insert(m_createdFontProperty, PropertyList());
const int index = it.value().size();
m_fontSubPropertyToFlag.insert(property, index);
it.value().push_back(property);
m_fontSubPropertyToProperty[property] = m_createdFontProperty;
resetMap[property] = true;
}
if (type == QVariant::Font)
m_createdFontProperty = property;
}
// Map the font family names to display names retrieved from the XML configuration
static QStringList designerFamilyNames(QStringList families, const FontPropertyManager::NameMap &nm)
{
if (nm.empty())
return families;
const FontPropertyManager::NameMap::const_iterator ncend = nm.constEnd();
const QStringList::iterator end = families.end();
for (QStringList::iterator it = families.begin(); it != end; ++it) {
const FontPropertyManager::NameMap::const_iterator nit = nm.constFind(*it);
if (nit != ncend)
*it = nit.value();
}
return families;
}
void FontPropertyManager::postInitializeProperty(QtVariantPropertyManager *vm,
QtProperty *property,
int type,
int enumTypeId)
{
if (type != QVariant::Font)
return;
// This will cause a recursion
QtVariantProperty *antialiasing = vm->addProperty(enumTypeId, QCoreApplication::translate("FontPropertyManager", "Antialiasing"));
const QFont font = qVariantValue<QFont>(vm->variantProperty(property)->value());
antialiasing->setAttribute(QLatin1String("enumNames"), m_aliasingEnumNames);
antialiasing->setValue(antialiasingToIndex(font.styleStrategy()));
property->addSubProperty(antialiasing);
m_propertyToAntialiasing[property] = antialiasing;
m_antialiasingToProperty[antialiasing] = property;
// Fiddle family names
if (!m_familyMappings.empty()) {
const PropertyToSubPropertiesMap::iterator it = m_propertyToFontSubProperties.find(m_createdFontProperty);
QtVariantProperty *familyProperty = vm->variantProperty(it.value().front());
const QString enumNamesAttribute = QLatin1String("enumNames");
QStringList plainFamilyNames = familyProperty->attributeValue(enumNamesAttribute).toStringList();
// Did someone load fonts or something?
if (m_designerFamilyNames.size() != plainFamilyNames.size())
m_designerFamilyNames = designerFamilyNames(plainFamilyNames, m_familyMappings);
familyProperty->setAttribute(enumNamesAttribute, m_designerFamilyNames);
}
// Next
m_createdFontProperty = 0;
}
bool FontPropertyManager::uninitializeProperty(QtProperty *property)
{
const PropertyToPropertyMap::iterator ait = m_propertyToAntialiasing.find(property);
if (ait != m_propertyToAntialiasing.end()) {
QtProperty *antialiasing = ait.value();
m_antialiasingToProperty.remove(antialiasing);
m_propertyToAntialiasing.erase(ait);
delete antialiasing;
}
PropertyToSubPropertiesMap::iterator sit = m_propertyToFontSubProperties.find(property);
if (sit == m_propertyToFontSubProperties.end())
return false;
m_propertyToFontSubProperties.erase(sit);
m_fontSubPropertyToFlag.remove(property);
m_fontSubPropertyToProperty.remove(property);
return true;
}
void FontPropertyManager::slotPropertyDestroyed(QtProperty *property)
{
removeAntialiasingProperty(property);
}
void FontPropertyManager::removeAntialiasingProperty(QtProperty *property)
{
const PropertyToPropertyMap::iterator ait = m_antialiasingToProperty.find(property);
if (ait == m_antialiasingToProperty.end())
return;
m_propertyToAntialiasing[ait.value()] = 0;
m_antialiasingToProperty.erase(ait);
}
bool FontPropertyManager::resetFontSubProperty(QtVariantPropertyManager *vm, QtProperty *property)
{
const PropertyToPropertyMap::iterator it = m_fontSubPropertyToProperty.find(property);
if (it == m_fontSubPropertyToProperty.end())
return false;
QtVariantProperty *fontProperty = vm->variantProperty(it.value());
QVariant v = fontProperty->value();
QFont font = qvariant_cast<QFont>(v);
unsigned mask = font.resolve();
const unsigned flag = fontFlag(m_fontSubPropertyToFlag.value(property));
mask &= ~flag;
font.resolve(mask);
qVariantSetValue(v, font);
fontProperty->setValue(v);
return true;
}
int FontPropertyManager::antialiasingToIndex(QFont::StyleStrategy antialias)
{
switch (antialias) {
case QFont::PreferDefault: return 0;
case QFont::NoAntialias: return 1;
case QFont::PreferAntialias: return 2;
default: break;
}
return 0;
}
QFont::StyleStrategy FontPropertyManager::indexToAntialiasing(int idx)
{
switch (idx) {
case 0: return QFont::PreferDefault;
case 1: return QFont::NoAntialias;
case 2: return QFont::PreferAntialias;
}
return QFont::PreferDefault;
}
unsigned FontPropertyManager::fontFlag(int idx)
{
switch (idx) {
case 0: return QFont::FamilyResolved;
case 1: return QFont::SizeResolved;
case 2: return QFont::WeightResolved;
case 3: return QFont::StyleResolved;
case 4: return QFont::UnderlineResolved;
case 5: return QFont::StrikeOutResolved;
case 6: return QFont::KerningResolved;
case 7: return QFont::StyleStrategyResolved;
}
return 0;
}
FontPropertyManager::ValueChangedResult FontPropertyManager::valueChanged(QtVariantPropertyManager *vm, QtProperty *property, const QVariant &value)
{
QtProperty *antialiasingProperty = m_antialiasingToProperty.value(property, 0);
if (!antialiasingProperty) {
if (m_propertyToFontSubProperties.contains(property)) {
updateModifiedState(property, value);
}
return NoMatch;
}
QtVariantProperty *fontProperty = vm->variantProperty(antialiasingProperty);
const QFont::StyleStrategy newValue = indexToAntialiasing(value.toInt());
QFont font = qVariantValue<QFont>(fontProperty->value());
const QFont::StyleStrategy oldValue = font.styleStrategy();
if (newValue == oldValue)
return Unchanged;
font.setStyleStrategy(newValue);
fontProperty->setValue(qVariantFromValue(font));
return Changed;
}
void FontPropertyManager::updateModifiedState(QtProperty *property, const QVariant &value)
{
const PropertyToSubPropertiesMap::iterator it = m_propertyToFontSubProperties.find(property);
if (it == m_propertyToFontSubProperties.end())
return;
const PropertyList &subProperties = it.value();
QFont font = qVariantValue<QFont>(value);
const unsigned mask = font.resolve();
const int count = subProperties.size();
for (int index = 0; index < count; index++) {
const unsigned flag = fontFlag(index);
subProperties.at(index)->setModified(mask & flag);
}
}
void FontPropertyManager::setValue(QtVariantPropertyManager *vm, QtProperty *property, const QVariant &value)
{
updateModifiedState(property, value);
if (QtProperty *antialiasingProperty = m_propertyToAntialiasing.value(property, 0)) {
QtVariantProperty *antialiasing = vm->variantProperty(antialiasingProperty);
if (antialiasing) {
QFont font = qVariantValue<QFont>(value);
antialiasing->setValue(antialiasingToIndex(font.styleStrategy()));
}
}
}
/* Parse a mappings file of the form:
* <fontmappings>
* <mapping><family>DejaVu Sans</family><display>DejaVu Sans [CE]</display></mapping>
* ... which is used to display on which platforms fonts are available.*/
static const char *rootTagC = "fontmappings";
static const char *mappingTagC = "mapping";
static const char *familyTagC = "family";
static const char *displayTagC = "display";
static QString msgXmlError(const QXmlStreamReader &r, const QString& fileName)
{
return QString::fromUtf8("An error has been encountered at line %1 of %2: %3:").arg(r.lineNumber()).arg(fileName, r.errorString());
}
/* Switch stages when encountering a start element (state table) */
enum ParseStage { ParseBeginning, ParseWithinRoot, ParseWithinMapping, ParseWithinFamily,
ParseWithinDisplay, ParseError };
static ParseStage nextStage(ParseStage currentStage, const QStringRef &startElement)
{
switch (currentStage) {
case ParseBeginning:
return startElement == QLatin1String(rootTagC) ? ParseWithinRoot : ParseError;
case ParseWithinRoot:
case ParseWithinDisplay: // Next mapping, was in <display>
return startElement == QLatin1String(mappingTagC) ? ParseWithinMapping : ParseError;
case ParseWithinMapping:
return startElement == QLatin1String(familyTagC) ? ParseWithinFamily : ParseError;
case ParseWithinFamily:
return startElement == QLatin1String(displayTagC) ? ParseWithinDisplay : ParseError;
case ParseError:
break;
}
return ParseError;
}
bool FontPropertyManager::readFamilyMapping(NameMap *rc, QString *errorMessage)
{
rc->clear();
const QString fileName = QLatin1String(":/trolltech/propertyeditor/fontmapping.xml");
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly)) {
*errorMessage = QString::fromUtf8("Unable to open %1: %2").arg(fileName, file.errorString());
return false;
}
QXmlStreamReader reader(&file);
QXmlStreamReader::TokenType token;
QString family;
ParseStage stage = ParseBeginning;
do {
token = reader.readNext();
switch (token) {
case QXmlStreamReader::Invalid:
*errorMessage = msgXmlError(reader, fileName);
return false;
case QXmlStreamReader::StartElement:
stage = nextStage(stage, reader.name());
switch (stage) {
case ParseError:
reader.raiseError(QString::fromUtf8("Unexpected element <%1>.").arg(reader.name().toString()));
*errorMessage = msgXmlError(reader, fileName);
return false;
case ParseWithinFamily:
family = reader.readElementText();
break;
case ParseWithinDisplay:
rc->insert(family, reader.readElementText());
break;
default:
break;
}
default:
break;
}
} while (token != QXmlStreamReader::EndDocument);
return true;
}
}
QT_END_NAMESPACE
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