testwidget.cpp

Go to the documentation of this file.

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module 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.
**
**
** 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 "testwidget.h"
#include "elidedlabel.h"
 
#include <QGridLayout>
#include <QLabel>
#include <QPushButton>
 
TestWidget::TestWidget(QWidget *parent)
    : QWidget(parent)
{
    const QString romeo = tr(
        "But soft, what light through yonder window breaks? / "
        "It is the east, and Juliet is the sun. / "
        "Arise, fair sun, and kill the envious moon, / "
        "Who is already sick and pale with grief / "
        "That thou, her maid, art far more fair than she."
    );
 
    const QString macbeth = tr(
        "To-morrow, and to-morrow, and to-morrow, / "
        "Creeps in this petty pace from day to day, / "
        "To the last syllable of recorded time; / "
        "And all our yesterdays have lighted fools / "
        "The way to dusty death. Out, out, brief candle! / "
        "Life's but a walking shadow, a poor player, / "
        "That struts and frets his hour upon the stage, / "
        "And then is heard no more. It is a tale / "
        "Told by an idiot, full of sound and fury, / "
        "Signifying nothing."
    );
 
    const QString harry = tr("Feeling lucky, punk?");
 
    textSamples << romeo << macbeth << harry;
 
    sampleIndex = 0;
    elidedText = new ElidedLabel(textSamples[sampleIndex], this);
    elidedText->setFrameStyle(QFrame::Box);
 
    QPushButton *switchButton = new QPushButton(tr("Switch text"));
    connect(switchButton, &QPushButton::clicked, this, &TestWidget::switchText);
 
    QPushButton *exitButton = new QPushButton(tr("Exit"));
    connect(exitButton, &QPushButton::clicked, this, &TestWidget::close);
 
    QLabel *label = new QLabel(tr("Elided"));
    label->setVisible(elidedText->isElided());
    connect(elidedText, &ElidedLabel::elisionChanged, label, &QLabel::setVisible);
 
    widthSlider = new QSlider(Qt::Horizontal);
    widthSlider->setMinimum(0);
    connect(widthSlider, &QSlider::valueChanged, this, &TestWidget::onWidthChanged);
 
    heightSlider = new QSlider(Qt::Vertical);
    heightSlider->setInvertedAppearance(true);
    heightSlider->setMinimum(0);
    connect(heightSlider, &QSlider::valueChanged, this, &TestWidget::onHeightChanged);
 
    QGridLayout *layout = new QGridLayout;
    layout->addWidget(label, 0, 1, Qt::AlignCenter);
    layout->addWidget(switchButton, 0, 2);
    layout->addWidget(exitButton, 0, 3);
    layout->addWidget(widthSlider, 1, 1, 1, 3);
    layout->addWidget(heightSlider, 2, 0);
    layout->addWidget(elidedText, 2, 1, 1, 3, Qt::AlignTop | Qt::AlignLeft);
 
    setLayout(layout);
}
 
void TestWidget::resizeEvent(QResizeEvent *event)
{
    Q_UNUSED(event);
 
    int maxWidth = widthSlider->width();
    widthSlider->setMaximum(maxWidth);
    widthSlider->setValue(maxWidth / 2);
 
    int maxHeight = heightSlider->height();
    heightSlider->setMaximum(maxHeight);
    heightSlider->setValue(maxHeight / 2);
 
    elidedText->setFixedSize(widthSlider->value(), heightSlider->value());
}
 
void TestWidget::switchText()
{
    sampleIndex = (sampleIndex + 1) % textSamples.size();
    elidedText->setText(textSamples.at(sampleIndex));
}
 
void TestWidget::onWidthChanged(int width)
{
    elidedText->setFixedWidth(width);
}
 
void TestWidget::onHeightChanged(int height)
{
    elidedText->setFixedHeight(height);
}