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Diffstat (limited to 'src/quickcontrols2/qquicktheme.cpp')
-rw-r--r-- | src/quickcontrols2/qquicktheme.cpp | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/quickcontrols2/qquicktheme.cpp b/src/quickcontrols2/qquicktheme.cpp new file mode 100644 index 00000000..06a66bfd --- /dev/null +++ b/src/quickcontrols2/qquicktheme.cpp @@ -0,0 +1,163 @@ +/**************************************************************************** +** +** 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 +{ + Q_UNUSED(type); + return m_styleFont.data(); +} + +const QPalette *QQuickTheme::palette(Palette type) const +{ + Q_UNUSED(type); + return m_stylePalette.data(); +} + +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 |