examples/widgets/icons/iconpreviewarea.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/widgets/icons/iconpreviewarea.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,142 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@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]