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Diffstat (limited to 'examples/widgets/validators/main.cpp')
-rw-r--r-- | examples/widgets/validators/main.cpp | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/examples/widgets/validators/main.cpp b/examples/widgets/validators/main.cpp new file mode 100644 index 0000000..6822b62 --- /dev/null +++ b/examples/widgets/validators/main.cpp @@ -0,0 +1,137 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <qdebug.h> +#include <QApplication> +#include <QLineEdit> +#include <QValidator> + +#include "ui_validators.h" + +class ValidatorWidget : public QWidget, public Ui::ValidatorsForm +{ + Q_OBJECT +public: + ValidatorWidget(QWidget *parent = 0); + +private slots: + void updateValidator(); + void updateDoubleValidator(); + void _setLocale(const QLocale &l) { setLocale(l); updateValidator(); updateDoubleValidator(); } + +private: + QIntValidator *validator; + QDoubleValidator *doubleValidator; +}; + +ValidatorWidget::ValidatorWidget(QWidget *parent) + : QWidget(parent) +{ + setupUi(this); + + connect(localeSelector, SIGNAL(localeSelected(QLocale)), this, SLOT(_setLocale(QLocale))); + + connect(minVal, SIGNAL(editingFinished()), this, SLOT(updateValidator())); + connect(maxVal, SIGNAL(editingFinished()), this, SLOT(updateValidator())); + connect(editor, SIGNAL(editingFinished()), ledWidget, SLOT(flash())); + + connect(doubleMaxVal, SIGNAL(editingFinished()), this, SLOT(updateDoubleValidator())); + connect(doubleMinVal, SIGNAL(editingFinished()), this, SLOT(updateDoubleValidator())); + connect(doubleDecimals, SIGNAL(valueChanged(int)), this, SLOT(updateDoubleValidator())); + connect(doubleFormat, SIGNAL(activated(int)), this, SLOT(updateDoubleValidator())); + connect(doubleEditor, SIGNAL(editingFinished()), doubleLedWidget, SLOT(flash())); + + validator = 0; + doubleValidator = 0; + updateValidator(); + updateDoubleValidator(); +}; + +void ValidatorWidget::updateValidator() +{ + QIntValidator *v = new QIntValidator(minVal->value(), maxVal->value(), this); + v->setLocale(locale()); + editor->setValidator(v); + delete validator; + validator = v; + + QString s = editor->text(); + int i = 0; + if (validator->validate(s, i) == QValidator::Invalid) { + editor->clear(); + } else { + editor->setText(s); + } +} + +void ValidatorWidget::updateDoubleValidator() +{ + QDoubleValidator *v + = new QDoubleValidator(doubleMinVal->value(), doubleMaxVal->value(), + doubleDecimals->value(), this); + v->setNotation(static_cast<QDoubleValidator::Notation>(doubleFormat->currentIndex())); + v->setLocale(locale()); + doubleEditor->setValidator(v); + delete doubleValidator; + doubleValidator = v; + + QString s = doubleEditor->text(); + int i = 0; + if (doubleValidator->validate(s, i) == QValidator::Invalid) { + doubleEditor->clear(); + } else { + doubleEditor->setText(s); + } +} + +int main(int argc, char **argv) +{ + Q_INIT_RESOURCE(validators); + + QApplication app(argc, argv); + + ValidatorWidget w; + w.show(); + + return app.exec(); +} + +#include "main.moc" |