qt5base-lts/examples/widgets/dialogs/standarddialogs/dialog.cpp
Jani Heikkinen cd46a2daf5 Unify license header usage.
Update files using old header.LGPL3 to header.LGPL
Update files using old FDL template to use new one
Update files using old BSD template to use new one

Change-Id: I36a78272516f9953d02956522f285b40adfc8915
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
2016-03-29 10:20:03 +00:00

518 lines
20 KiB
C++

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, 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 The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
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** 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
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**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtWidgets>
#include "dialog.h"
#define MESSAGE \
Dialog::tr("<p>Message boxes have a caption, a text, " \
"and any number of buttons, each with standard or custom texts." \
"<p>Click a button to close the message box. Pressing the Esc button " \
"will activate the detected escape button (if any).")
#define MESSAGE_DETAILS \
Dialog::tr("If a message box has detailed text, the user can reveal it " \
"by pressing the Show Details... button.")
class DialogOptionsWidget : public QGroupBox
{
public:
explicit DialogOptionsWidget(QWidget *parent = 0);
void addCheckBox(const QString &text, int value);
void addSpacer();
int value() const;
private:
typedef QPair<QCheckBox *, int> CheckBoxEntry;
QVBoxLayout *layout;
QList<CheckBoxEntry> checkBoxEntries;
};
DialogOptionsWidget::DialogOptionsWidget(QWidget *parent) :
QGroupBox(parent) , layout(new QVBoxLayout)
{
setTitle(Dialog::tr("Options"));
setLayout(layout);
}
void DialogOptionsWidget::addCheckBox(const QString &text, int value)
{
QCheckBox *checkBox = new QCheckBox(text);
layout->addWidget(checkBox);
checkBoxEntries.append(CheckBoxEntry(checkBox, value));
}
void DialogOptionsWidget::addSpacer()
{
layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding));
}
int DialogOptionsWidget::value() const
{
int result = 0;
foreach (const CheckBoxEntry &checkboxEntry, checkBoxEntries)
if (checkboxEntry.first->isChecked())
result |= checkboxEntry.second;
return result;
}
Dialog::Dialog(QWidget *parent)
: QWidget(parent)
{
QVBoxLayout *verticalLayout;
if (QGuiApplication::styleHints()->showIsFullScreen() || QGuiApplication::styleHints()->showIsMaximized()) {
QHBoxLayout *horizontalLayout = new QHBoxLayout(this);
QGroupBox *groupBox = new QGroupBox(QGuiApplication::applicationDisplayName(), this);
horizontalLayout->addWidget(groupBox);
verticalLayout = new QVBoxLayout(groupBox);
} else {
verticalLayout = new QVBoxLayout(this);
}
QToolBox *toolbox = new QToolBox;
verticalLayout->addWidget(toolbox);
errorMessageDialog = new QErrorMessage(this);
int frameStyle = QFrame::Sunken | QFrame::Panel;
integerLabel = new QLabel;
integerLabel->setFrameStyle(frameStyle);
QPushButton *integerButton =
new QPushButton(tr("QInputDialog::get&Int()"));
doubleLabel = new QLabel;
doubleLabel->setFrameStyle(frameStyle);
QPushButton *doubleButton =
new QPushButton(tr("QInputDialog::get&Double()"));
itemLabel = new QLabel;
itemLabel->setFrameStyle(frameStyle);
QPushButton *itemButton = new QPushButton(tr("QInputDialog::getIte&m()"));
textLabel = new QLabel;
textLabel->setFrameStyle(frameStyle);
QPushButton *textButton = new QPushButton(tr("QInputDialog::get&Text()"));
multiLineTextLabel = new QLabel;
multiLineTextLabel->setFrameStyle(frameStyle);
QPushButton *multiLineTextButton = new QPushButton(tr("QInputDialog::get&MultiLineText()"));
colorLabel = new QLabel;
colorLabel->setFrameStyle(frameStyle);
QPushButton *colorButton = new QPushButton(tr("QColorDialog::get&Color()"));
fontLabel = new QLabel;
fontLabel->setFrameStyle(frameStyle);
QPushButton *fontButton = new QPushButton(tr("QFontDialog::get&Font()"));
directoryLabel = new QLabel;
directoryLabel->setFrameStyle(frameStyle);
QPushButton *directoryButton =
new QPushButton(tr("QFileDialog::getE&xistingDirectory()"));
openFileNameLabel = new QLabel;
openFileNameLabel->setFrameStyle(frameStyle);
QPushButton *openFileNameButton =
new QPushButton(tr("QFileDialog::get&OpenFileName()"));
openFileNamesLabel = new QLabel;
openFileNamesLabel->setFrameStyle(frameStyle);
QPushButton *openFileNamesButton =
new QPushButton(tr("QFileDialog::&getOpenFileNames()"));
saveFileNameLabel = new QLabel;
saveFileNameLabel->setFrameStyle(frameStyle);
QPushButton *saveFileNameButton =
new QPushButton(tr("QFileDialog::get&SaveFileName()"));
criticalLabel = new QLabel;
criticalLabel->setFrameStyle(frameStyle);
QPushButton *criticalButton =
new QPushButton(tr("QMessageBox::critica&l()"));
informationLabel = new QLabel;
informationLabel->setFrameStyle(frameStyle);
QPushButton *informationButton =
new QPushButton(tr("QMessageBox::i&nformation()"));
questionLabel = new QLabel;
questionLabel->setFrameStyle(frameStyle);
QPushButton *questionButton =
new QPushButton(tr("QMessageBox::&question()"));
warningLabel = new QLabel;
warningLabel->setFrameStyle(frameStyle);
QPushButton *warningButton = new QPushButton(tr("QMessageBox::&warning()"));
errorLabel = new QLabel;
errorLabel->setFrameStyle(frameStyle);
QPushButton *errorButton =
new QPushButton(tr("QErrorMessage::showM&essage()"));
connect(integerButton, &QAbstractButton::clicked, this, &Dialog::setInteger);
connect(doubleButton, &QAbstractButton::clicked, this, &Dialog::setDouble);
connect(itemButton, &QAbstractButton::clicked, this, &Dialog::setItem);
connect(textButton, &QAbstractButton::clicked, this, &Dialog::setText);
connect(multiLineTextButton, &QAbstractButton::clicked, this, &Dialog::setMultiLineText);
connect(colorButton, &QAbstractButton::clicked, this, &Dialog::setColor);
connect(fontButton, &QAbstractButton::clicked, this, &Dialog::setFont);
connect(directoryButton, &QAbstractButton::clicked,
this, &Dialog::setExistingDirectory);
connect(openFileNameButton, &QAbstractButton::clicked,
this, &Dialog::setOpenFileName);
connect(openFileNamesButton, &QAbstractButton::clicked,
this, &Dialog::setOpenFileNames);
connect(saveFileNameButton, &QAbstractButton::clicked,
this, &Dialog::setSaveFileName);
connect(criticalButton, &QAbstractButton::clicked, this, &Dialog::criticalMessage);
connect(informationButton, &QAbstractButton::clicked,
this, &Dialog::informationMessage);
connect(questionButton, &QAbstractButton::clicked, this, &Dialog::questionMessage);
connect(warningButton, &QAbstractButton::clicked, this, &Dialog::warningMessage);
connect(errorButton, &QAbstractButton::clicked, this, &Dialog::errorMessage);
QWidget *page = new QWidget;
QGridLayout *layout = new QGridLayout(page);
layout->setColumnStretch(1, 1);
layout->setColumnMinimumWidth(1, 250);
layout->addWidget(integerButton, 0, 0);
layout->addWidget(integerLabel, 0, 1);
layout->addWidget(doubleButton, 1, 0);
layout->addWidget(doubleLabel, 1, 1);
layout->addWidget(itemButton, 2, 0);
layout->addWidget(itemLabel, 2, 1);
layout->addWidget(textButton, 3, 0);
layout->addWidget(textLabel, 3, 1);
layout->addWidget(multiLineTextButton, 4, 0);
layout->addWidget(multiLineTextLabel, 4, 1);
layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 5, 0);
toolbox->addItem(page, tr("Input Dialogs"));
const QString doNotUseNativeDialog = tr("Do not use native dialog");
page = new QWidget;
layout = new QGridLayout(page);
layout->setColumnStretch(1, 1);
layout->addWidget(colorButton, 0, 0);
layout->addWidget(colorLabel, 0, 1);
colorDialogOptionsWidget = new DialogOptionsWidget;
colorDialogOptionsWidget->addCheckBox(doNotUseNativeDialog, QColorDialog::DontUseNativeDialog);
colorDialogOptionsWidget->addCheckBox(tr("Show alpha channel") , QColorDialog::ShowAlphaChannel);
colorDialogOptionsWidget->addCheckBox(tr("No buttons") , QColorDialog::NoButtons);
layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 1, 0);
layout->addWidget(colorDialogOptionsWidget, 2, 0, 1 ,2);
toolbox->addItem(page, tr("Color Dialog"));
page = new QWidget;
layout = new QGridLayout(page);
layout->setColumnStretch(1, 1);
layout->addWidget(fontButton, 0, 0);
layout->addWidget(fontLabel, 0, 1);
fontDialogOptionsWidget = new DialogOptionsWidget;
fontDialogOptionsWidget->addCheckBox(doNotUseNativeDialog, QFontDialog::DontUseNativeDialog);
fontDialogOptionsWidget->addCheckBox(tr("Show scalable fonts"), QFontDialog::ScalableFonts);
fontDialogOptionsWidget->addCheckBox(tr("Show non scalable fonts"), QFontDialog::NonScalableFonts);
fontDialogOptionsWidget->addCheckBox(tr("Show monospaced fonts"), QFontDialog::MonospacedFonts);
fontDialogOptionsWidget->addCheckBox(tr("Show proportional fonts"), QFontDialog::ProportionalFonts);
fontDialogOptionsWidget->addCheckBox(tr("No buttons") , QFontDialog::NoButtons);
layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 1, 0);
layout->addWidget(fontDialogOptionsWidget, 2, 0, 1 ,2);
toolbox->addItem(page, tr("Font Dialog"));
page = new QWidget;
layout = new QGridLayout(page);
layout->setColumnStretch(1, 1);
layout->addWidget(directoryButton, 0, 0);
layout->addWidget(directoryLabel, 0, 1);
layout->addWidget(openFileNameButton, 1, 0);
layout->addWidget(openFileNameLabel, 1, 1);
layout->addWidget(openFileNamesButton, 2, 0);
layout->addWidget(openFileNamesLabel, 2, 1);
layout->addWidget(saveFileNameButton, 3, 0);
layout->addWidget(saveFileNameLabel, 3, 1);
fileDialogOptionsWidget = new DialogOptionsWidget;
fileDialogOptionsWidget->addCheckBox(doNotUseNativeDialog, QFileDialog::DontUseNativeDialog);
fileDialogOptionsWidget->addCheckBox(tr("Show directories only"), QFileDialog::ShowDirsOnly);
fileDialogOptionsWidget->addCheckBox(tr("Do not resolve symlinks"), QFileDialog::DontResolveSymlinks);
fileDialogOptionsWidget->addCheckBox(tr("Do not confirm overwrite"), QFileDialog::DontConfirmOverwrite);
fileDialogOptionsWidget->addCheckBox(tr("Do not use sheet"), QFileDialog::DontUseSheet);
fileDialogOptionsWidget->addCheckBox(tr("Readonly"), QFileDialog::ReadOnly);
fileDialogOptionsWidget->addCheckBox(tr("Hide name filter details"), QFileDialog::HideNameFilterDetails);
fileDialogOptionsWidget->addCheckBox(tr("Do not use custom directory icons (Windows)"), QFileDialog::DontUseCustomDirectoryIcons);
layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 4, 0);
layout->addWidget(fileDialogOptionsWidget, 5, 0, 1 ,2);
toolbox->addItem(page, tr("File Dialogs"));
page = new QWidget;
layout = new QGridLayout(page);
layout->setColumnStretch(1, 1);
layout->addWidget(criticalButton, 0, 0);
layout->addWidget(criticalLabel, 0, 1);
layout->addWidget(informationButton, 1, 0);
layout->addWidget(informationLabel, 1, 1);
layout->addWidget(questionButton, 2, 0);
layout->addWidget(questionLabel, 2, 1);
layout->addWidget(warningButton, 3, 0);
layout->addWidget(warningLabel, 3, 1);
layout->addWidget(errorButton, 4, 0);
layout->addWidget(errorLabel, 4, 1);
layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 5, 0);
toolbox->addItem(page, tr("Message Boxes"));
setWindowTitle(QGuiApplication::applicationDisplayName());
}
void Dialog::setInteger()
{
//! [0]
bool ok;
int i = QInputDialog::getInt(this, tr("QInputDialog::getInteger()"),
tr("Percentage:"), 25, 0, 100, 1, &ok);
if (ok)
integerLabel->setText(tr("%1%").arg(i));
//! [0]
}
void Dialog::setDouble()
{
//! [1]
bool ok;
double d = QInputDialog::getDouble(this, tr("QInputDialog::getDouble()"),
tr("Amount:"), 37.56, -10000, 10000, 2, &ok);
if (ok)
doubleLabel->setText(QString("$%1").arg(d));
//! [1]
}
void Dialog::setItem()
{
//! [2]
QStringList items;
items << tr("Spring") << tr("Summer") << tr("Fall") << tr("Winter");
bool ok;
QString item = QInputDialog::getItem(this, tr("QInputDialog::getItem()"),
tr("Season:"), items, 0, false, &ok);
if (ok && !item.isEmpty())
itemLabel->setText(item);
//! [2]
}
void Dialog::setText()
{
//! [3]
bool ok;
QString text = QInputDialog::getText(this, tr("QInputDialog::getText()"),
tr("User name:"), QLineEdit::Normal,
QDir::home().dirName(), &ok);
if (ok && !text.isEmpty())
textLabel->setText(text);
//! [3]
}
void Dialog::setMultiLineText()
{
//! [4]
bool ok;
QString text = QInputDialog::getMultiLineText(this, tr("QInputDialog::getMultiLineText()"),
tr("Address:"), "John Doe\nFreedom Street", &ok);
if (ok && !text.isEmpty())
multiLineTextLabel->setText(text);
//! [4]
}
void Dialog::setColor()
{
const QColorDialog::ColorDialogOptions options = QFlag(colorDialogOptionsWidget->value());
const QColor color = QColorDialog::getColor(Qt::green, this, "Select Color", options);
if (color.isValid()) {
colorLabel->setText(color.name());
colorLabel->setPalette(QPalette(color));
colorLabel->setAutoFillBackground(true);
}
}
void Dialog::setFont()
{
const QFontDialog::FontDialogOptions options = QFlag(fontDialogOptionsWidget->value());
bool ok;
QFont font = QFontDialog::getFont(&ok, QFont(fontLabel->text()), this, "Select Font", options);
if (ok) {
fontLabel->setText(font.key());
fontLabel->setFont(font);
}
}
void Dialog::setExistingDirectory()
{
QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
options |= QFileDialog::DontResolveSymlinks | QFileDialog::ShowDirsOnly;
QString directory = QFileDialog::getExistingDirectory(this,
tr("QFileDialog::getExistingDirectory()"),
directoryLabel->text(),
options);
if (!directory.isEmpty())
directoryLabel->setText(directory);
}
void Dialog::setOpenFileName()
{
const QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
QString selectedFilter;
QString fileName = QFileDialog::getOpenFileName(this,
tr("QFileDialog::getOpenFileName()"),
openFileNameLabel->text(),
tr("All Files (*);;Text Files (*.txt)"),
&selectedFilter,
options);
if (!fileName.isEmpty())
openFileNameLabel->setText(fileName);
}
void Dialog::setOpenFileNames()
{
const QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
QString selectedFilter;
QStringList files = QFileDialog::getOpenFileNames(
this, tr("QFileDialog::getOpenFileNames()"),
openFilesPath,
tr("All Files (*);;Text Files (*.txt)"),
&selectedFilter,
options);
if (files.count()) {
openFilesPath = files[0];
openFileNamesLabel->setText(QString("[%1]").arg(files.join(", ")));
}
}
void Dialog::setSaveFileName()
{
const QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
QString selectedFilter;
QString fileName = QFileDialog::getSaveFileName(this,
tr("QFileDialog::getSaveFileName()"),
saveFileNameLabel->text(),
tr("All Files (*);;Text Files (*.txt)"),
&selectedFilter,
options);
if (!fileName.isEmpty())
saveFileNameLabel->setText(fileName);
}
void Dialog::criticalMessage()
{
QMessageBox::StandardButton reply;
reply = QMessageBox::critical(this, tr("QMessageBox::critical()"),
MESSAGE,
QMessageBox::Abort | QMessageBox::Retry | QMessageBox::Ignore);
if (reply == QMessageBox::Abort)
criticalLabel->setText(tr("Abort"));
else if (reply == QMessageBox::Retry)
criticalLabel->setText(tr("Retry"));
else
criticalLabel->setText(tr("Ignore"));
}
void Dialog::informationMessage()
{
QMessageBox::StandardButton reply;
reply = QMessageBox::information(this, tr("QMessageBox::information()"), MESSAGE);
if (reply == QMessageBox::Ok)
informationLabel->setText(tr("OK"));
else
informationLabel->setText(tr("Escape"));
}
void Dialog::questionMessage()
{
QMessageBox::StandardButton reply;
reply = QMessageBox::question(this, tr("QMessageBox::question()"),
MESSAGE,
QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel);
if (reply == QMessageBox::Yes)
questionLabel->setText(tr("Yes"));
else if (reply == QMessageBox::No)
questionLabel->setText(tr("No"));
else
questionLabel->setText(tr("Cancel"));
}
void Dialog::warningMessage()
{
QMessageBox msgBox(QMessageBox::Warning, tr("QMessageBox::warning()"),
MESSAGE, 0, this);
msgBox.setDetailedText(MESSAGE_DETAILS);
msgBox.addButton(tr("Save &Again"), QMessageBox::AcceptRole);
msgBox.addButton(tr("&Continue"), QMessageBox::RejectRole);
if (msgBox.exec() == QMessageBox::AcceptRole)
warningLabel->setText(tr("Save Again"));
else
warningLabel->setText(tr("Continue"));
}
void Dialog::errorMessage()
{
errorMessageDialog->showMessage(
tr("This dialog shows and remembers error messages. "
"If the checkbox is checked (as it is by default), "
"the shown message will be shown again, "
"but if the user unchecks the box the message "
"will not appear again if QErrorMessage::showMessage() "
"is called with the same message."));
errorLabel->setText(tr("If the box is unchecked, the message "
"won't appear again."));
}