qt5base-lts/examples/widgets/icons/iconpreviewarea.cpp
Jason McDonald 1fdfc2abfe Update copyright year in license headers.
Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
2012-01-05 06:36:56 +01:00

142 lines
4.5 KiB
C++

/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** 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 <QtWidgets>
#include "iconpreviewarea.h"
//! [0]
IconPreviewArea::IconPreviewArea(QWidget *parent)
: QWidget(parent)
{
QGridLayout *mainLayout = new QGridLayout;
setLayout(mainLayout);
stateLabels[0] = createHeaderLabel(tr("Off"));
stateLabels[1] = createHeaderLabel(tr("On"));
Q_ASSERT(NumStates == 2);
modeLabels[0] = createHeaderLabel(tr("Normal"));
modeLabels[1] = createHeaderLabel(tr("Active"));
modeLabels[2] = createHeaderLabel(tr("Disabled"));
modeLabels[3] = createHeaderLabel(tr("Selected"));
Q_ASSERT(NumModes == 4);
for (int j = 0; j < NumStates; ++j)
mainLayout->addWidget(stateLabels[j], j + 1, 0);
for (int i = 0; i < NumModes; ++i) {
mainLayout->addWidget(modeLabels[i], 0, i + 1);
for (int j = 0; j < NumStates; ++j) {
pixmapLabels[i][j] = createPixmapLabel();
mainLayout->addWidget(pixmapLabels[i][j], j + 1, i + 1);
}
}
}
//! [0]
//! [1]
void IconPreviewArea::setIcon(const QIcon &icon)
{
this->icon = icon;
updatePixmapLabels();
}
//! [1]
//! [2]
void IconPreviewArea::setSize(const QSize &size)
{
if (size != this->size) {
this->size = size;
updatePixmapLabels();
}
}
//! [2]
//! [3]
QLabel *IconPreviewArea::createHeaderLabel(const QString &text)
{
QLabel *label = new QLabel(tr("<b>%1</b>").arg(text));
label->setAlignment(Qt::AlignCenter);
return label;
}
//! [3]
//! [4]
QLabel *IconPreviewArea::createPixmapLabel()
{
QLabel *label = new QLabel;
label->setEnabled(false);
label->setAlignment(Qt::AlignCenter);
label->setFrameShape(QFrame::Box);
label->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
label->setBackgroundRole(QPalette::Base);
label->setAutoFillBackground(true);
label->setMinimumSize(132, 132);
return label;
}
//! [4]
//! [5]
void IconPreviewArea::updatePixmapLabels()
{
for (int i = 0; i < NumModes; ++i) {
QIcon::Mode mode;
if (i == 0) {
mode = QIcon::Normal;
} else if (i == 1) {
mode = QIcon::Active;
} else if (i == 2) {
mode = QIcon::Disabled;
} else {
mode = QIcon::Selected;
}
for (int j = 0; j < NumStates; ++j) {
QIcon::State state = (j == 0) ? QIcon::Off : QIcon::On;
QPixmap pixmap = icon.pixmap(size, mode, state);
pixmapLabels[i][j]->setPixmap(pixmap);
pixmapLabels[i][j]->setEnabled(!pixmap.isNull());
}
}
}
//! [5]