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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Quick Controls 2 module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qquicktheme_p.h"
#include "qquickstyle_p.h"
#include <QtCore/qmetaobject.h>
#include <QtCore/qsettings.h>
#include <functional>
QT_BEGIN_NAMESPACE
#if QT_CONFIG(settings)
static void readValue(const QSharedPointer<QSettings> &settings, const QString &name, std::function<void(const QVariant &)> setValue)
{
const QVariant var = settings->value(name);
if (var.isValid())
setValue(var);
}
template <typename Enum>
static Enum toEnumValue(const QVariant &var)
{
// ### TODO: expose QFont enums to the meta object system using Q_ENUM
//QMetaEnum enumeration = QMetaEnum::fromType<Enum>();
//bool ok = false;
//int value = enumeration.keyToValue(var.toByteArray(), &ok);
//if (!ok)
// value = var.toInt();
//return static_cast<Enum>(value);
return static_cast<Enum>(var.toInt());
}
QFont *readFont(const QSharedPointer<QSettings> &settings)
{
const QVariant var = settings->value(QStringLiteral("Font"));
if (var.isValid())
return new QFont(var.value<QFont>());
QFont f;
settings->beginGroup(QStringLiteral("Font"));
readValue(settings, QStringLiteral("Family"), [&f](const QVariant &var) { f.setFamily(var.toString()); });
readValue(settings, QStringLiteral("PointSize"), [&f](const QVariant &var) { f.setPointSizeF(var.toReal()); });
readValue(settings, QStringLiteral("PixelSize"), [&f](const QVariant &var) { f.setPixelSize(var.toInt()); });
readValue(settings, QStringLiteral("StyleHint"), [&f](const QVariant &var) { f.setStyleHint(toEnumValue<QFont::StyleHint>(var.toInt())); });
readValue(settings, QStringLiteral("Weight"), [&f](const QVariant &var) { f.setWeight(toEnumValue<QFont::Weight>(var)); });
readValue(settings, QStringLiteral("Style"), [&f](const QVariant &var) { f.setStyle(toEnumValue<QFont::Style>(var.toInt())); });
settings->endGroup();
return new QFont(f);
}
static void readColorGroup(const QSharedPointer<QSettings> &settings, QPalette::ColorGroup group, QPalette *palette)
{
const QStringList keys = settings->childKeys();
if (keys.isEmpty())
return;
static const int index = QPalette::staticMetaObject.indexOfEnumerator("ColorRole");
Q_ASSERT(index != -1);
QMetaEnum metaEnum = QPalette::staticMetaObject.enumerator(index);
for (const QString &key : keys) {
bool ok = false;
int role = metaEnum.keyToValue(key.toUtf8(), &ok);
if (ok)
palette->setColor(group, static_cast<QPalette::ColorRole>(role), settings->value(key).value<QColor>());
}
}
static QPalette *readPalette(const QSharedPointer<QSettings> &settings)
{
QPalette p;
settings->beginGroup(QStringLiteral("Palette"));
readColorGroup(settings, QPalette::All, &p);
settings->beginGroup(QStringLiteral("Normal"));
readColorGroup(settings, QPalette::Normal, &p);
settings->endGroup();
settings->beginGroup(QStringLiteral("Disabled"));
readColorGroup(settings, QPalette::Disabled, &p);
settings->endGroup();
return new QPalette(p);
}
#endif // QT_CONFIG(settings)
QQuickTheme::QQuickTheme(const QString &style)
: QQuickProxyTheme()
{
#if QT_CONFIG(settings)
QSharedPointer<QSettings> settings = QQuickStylePrivate::settings(style);
if (settings) {
m_styleFont.reset(readFont(settings));
m_stylePalette.reset(readPalette(settings));
}
#endif
}
const QFont *QQuickTheme::font(Font type) const
{
if (m_styleFont)
return m_styleFont.data();
return QQuickProxyTheme::font(type);
}
const QPalette *QQuickTheme::palette(Palette type) const
{
if (m_stylePalette)
return m_stylePalette.data();
return QQuickProxyTheme::palette(type);
}
QFont QQuickTheme::resolveFont(const QFont &font) const
{
if (!m_styleFont)
return font;
return m_styleFont->resolve(font);
}
QPalette QQuickTheme::resolvePalette(const QPalette &palette) const
{
if (!m_stylePalette)
return palette;
return m_stylePalette->resolve(palette);
}
QT_END_NAMESPACE
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