Qt 4.8: stylesheeteditor.cpp Example File (widgets/stylesheet/stylesheeteditor.cpp)

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# stylesheeteditor.cpp Example File

widgets/stylesheet/stylesheeteditor.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2014 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,
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     ****************************************************************************/

     #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);
     }