iconpreviewarea.cpp Example File
widgets/icons/iconpreviewarea.cpp
/****************************************************************************
**
** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
**
** This file is part of the documentation of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 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 GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include <QtGui>
#include "iconpreviewarea.h"
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"));
Q_ASSERT(NumModes == 3);
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);
}
}
}
void IconPreviewArea::setIcon(const QIcon &icon)
{
this->icon = icon;
updatePixmapLabels();
}
void IconPreviewArea::setSize(const QSize &size)
{
if (size != this->size) {
this->size = size;
updatePixmapLabels();
}
}
QLabel *IconPreviewArea::createHeaderLabel(const QString &text)
{
QLabel *label = new QLabel(tr("<b>%1</b>").arg(text));
label->setAlignment(Qt::AlignCenter);
return label;
}
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->setMinimumSize(132, 132);
return label;
}
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 {
mode = QIcon::Disabled;
}
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());
}
}
}