Home · All Namespaces · All Classes · Main Classes · Grouped Classes · Modules · Functions

iconpreviewarea.cpp Example File
widgets/icons/iconpreviewarea.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: Qt Software Information ([email protected])
 **
 ** This file is part of the example classes of the Qt Toolkit.
 **
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 **
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License versions 2.0 or 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 GNU General Public Licensing requirements will be met:
 ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
 ** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
 ** exception, Nokia gives you certain additional rights. These rights
 ** are described in the Nokia Qt GPL Exception version 1.3, included in
 ** the file GPL_EXCEPTION.txt in this package.
 **
 ** Qt for Windows(R) Licensees
 ** As a special exception, Nokia, as the sole copyright holder for Qt
 ** Designer, grants users of the Qt/Eclipse Integration plug-in the
 ** right for the Qt/Eclipse Integration to link to functionality
 ** provided by Qt Designer and its related libraries.
 **
 ** If you are unsure which license is appropriate for your use, please
 ** contact the sales department at [email protected].
 **
 ****************************************************************************/

 #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"));
     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);
         }
     }
 }

 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->setAutoFillBackground(true);
     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 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());
         }
     }
 }


Copyright © 2008 Nokia Trademarks
Qt 4.4.3