stylesheeteditor.cpp Example File

 /****************************************************************************
 **
 ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/legal
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
 **     of its contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtGui>

 #include "stylesheeteditor.h"

 StyleSheetEditor::StyleSheetEditor(QWidget *parent)
     : QDialog(parent)
 {
     ui.setupUi(this);

     QRegExp regExp(".(.*)\\+?Style");
     QString defaultStyle = QApplication::style()->metaObject()->className();

     if (regExp.exactMatch(defaultStyle))
         defaultStyle = regExp.cap(1);

     ui.styleCombo->addItems(QStyleFactory::keys());
     ui.styleCombo->setCurrentIndex(ui.styleCombo->findText(defaultStyle, Qt::MatchContains));
     ui.styleSheetCombo->setCurrentIndex(ui.styleSheetCombo->findText("Coffee"));
     loadStyleSheet("Coffee");
 }

 void StyleSheetEditor::on_styleCombo_activated(const QString &styleName)
 {
     qApp->setStyle(styleName);
     ui.applyButton->setEnabled(false);
 }

 void StyleSheetEditor::on_styleSheetCombo_activated(const QString &sheetName)
 {
     loadStyleSheet(sheetName);
 }

 void StyleSheetEditor::on_styleTextEdit_textChanged()
 {
     ui.applyButton->setEnabled(true);
 }

 void StyleSheetEditor::on_applyButton_clicked()
 {
     qApp->setStyleSheet(ui.styleTextEdit->toPlainText());
     ui.applyButton->setEnabled(false);
 }

 void StyleSheetEditor::loadStyleSheet(const QString &sheetName)
 {
     QFile file(":/qss/" + sheetName.toLower() + ".qss");
     file.open(QFile::ReadOnly);
     QString styleSheet = QLatin1String(file.readAll());

     ui.styleTextEdit->setPlainText(styleSheet);
     qApp->setStyleSheet(styleSheet);
     ui.applyButton->setEnabled(false);
 }