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Diffstat (limited to 'examples/widgets/icons/iconpreviewarea.cpp')
-rw-r--r-- | examples/widgets/icons/iconpreviewarea.cpp | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/examples/widgets/icons/iconpreviewarea.cpp b/examples/widgets/icons/iconpreviewarea.cpp new file mode 100644 index 0000000..d80d41d --- /dev/null +++ b/examples/widgets/icons/iconpreviewarea.cpp @@ -0,0 +1,142 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> + +#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] |