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Diffstat (limited to 'examples/widgets/widgets/validators/main.cpp')
-rw-r--r-- | examples/widgets/widgets/validators/main.cpp | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/examples/widgets/widgets/validators/main.cpp b/examples/widgets/widgets/validators/main.cpp new file mode 100644 index 0000000000..85304b9138 --- /dev/null +++ b/examples/widgets/widgets/validators/main.cpp @@ -0,0 +1,136 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** 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 Nokia Corporation 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 <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" |