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// Copyright 2014-2021 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
// See scripts/generate-ApplicationPalette-class.py
% (warning) s
#ifndef APPLICATIONPALETTE_H
#define APPLICATIONPALETTE_H
#include <QTimer>
#include <QWidget>
#ifndef Q_MOC_RUN
# include <boost/optional.hpp>
#endif
#include <QApplication>
#include <QDebug>
///
/// Class enabling theming of QApplication::palette from stylesheets.
///
/// QPalette cannot be styled which creates issues as not all
/// GUI elements in Qt can be styled. This class works around
/// that by offering a QPROPERTY for each color role and group
/// combination in QPalette. As you can set custom QPROPERTYs
/// from stylesheet this allows the user to set all relevant
/// palette brushes from the stylesheet.
///
/// Due to restrictions on allowed property names as well as a
/// mandatory prefix the attributes are exposed as lower cased:
/// "qproperty-<role>_<group>".
///
/// So a group of QPalette::Active and QPalette::Text role
/// would be styled by:
///
/// ApplicationPalette {
/// qproperty-text_active: #ff0000; /* Set color for active group */
/// }
///
/// See http://qt-project.org/doc/qt-4.8/qpalette.html#ColorGroup-enum
/// for the available groups and roles.
///
/// You can also use the shorthand "qproperty-<role>" to set all groups
/// to the same brush.
///
/// The class will automatically pick up style changes on itself
/// and update the application palette accordingly. To use the class
/// simply instantiate it before setting the theme and keep it around
/// till the application terminates.
///
class ApplicationPalette : public QWidget {
Q_OBJECT
% (properties) s public : explicit ApplicationPalette(QWidget *p = 0)
: QWidget(p),
m_originalPalette(QApplication::palette()){
// Empty
}
% (getterssetters) s
private slots : void updateApplicationPalette() {
qWarning() << "Updating application palette";
QPalette newPalette = m_originalPalette; // Do not re-use potentially already styled palette. Might not pick up
// system style changes though.
% (paletteupdates) s
QApplication::setPalette(newPalette);
resetAllProperties();
}
void resetAllProperties() { % (propertyresets) s }
protected:
bool event(QEvent *e) Q_DECL_OVERRIDE {
bool result = QWidget::event(e);
if (e->type() == QEvent::StyleChange) {
// Update global palette. Have to defer it
// as property updates are also signals.
QTimer::singleShot(0, this, SLOT(updateApplicationPalette()));
}
return result;
}
private:
const QPalette m_originalPalette;
% (variables) s
};
#endif // APPLICATIONPALETTE_H
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