stylesheeteditor.cpp

QT 开发环境里面一个很重要的文件

/****************************************************************************
**
** Copyright (C) 2006-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 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 GNU
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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****************************************************************************/

#include <QtGui>

#include "stylesheeteditor.h"

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

    QRegExp regExp("Q(.*)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));
    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);
}