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-rw-r--r--demos/embedded/flickable/main.cpp233
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diff --git a/demos/embedded/flickable/main.cpp b/demos/embedded/flickable/main.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the demonstration applications of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** 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.
-**
-** 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.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <QtCore>
-#include <QtGui>
-
-#include "flickable.h"
-
-// Returns a list of two-word color names
-static QStringList colorPairs(int max)
-{
- // capitalize the first letter
- QStringList colors = QColor::colorNames();
- colors.removeAll("transparent");
- int num = colors.count();
- for (int c = 0; c < num; ++c)
- colors[c] = colors[c][0].toUpper() + colors[c].mid(1);
-
- // combine two colors, e.g. "lime skyblue"
- QStringList combinedColors;
- for (int i = 0; i < num; ++i)
- for (int j = 0; j < num; ++j)
- combinedColors << QString("%1 %2").arg(colors[i]).arg(colors[j]);
-
- // randomize it
- colors.clear();
- while (combinedColors.count()) {
- int i = qrand() % combinedColors.count();
- colors << combinedColors[i];
- combinedColors.removeAt(i);
- if (colors.count() == max)
- break;
- }
-
- return colors;
-}
-
-class ColorList : public QWidget, public Flickable
-{
- Q_OBJECT
-
-public:
- ColorList(QWidget *parent = 0)
- : QWidget(parent) {
- m_offset = 0;
- m_height = QFontMetrics(font()).height() + 5;
- m_highlight = -1;
- m_selected = -1;
-
- QStringList colors = colorPairs(999);
- for (int i = 0; i < colors.count(); ++i) {
- QString c = colors[i];
- QString str;
- str.sprintf("%4d", i + 1);
- m_colorNames << (str + " " + c);
-
- QStringList duet = c.split(' ');
- m_firstColor << duet[0];
- m_secondColor << duet[1];
- }
-
- setAttribute(Qt::WA_OpaquePaintEvent, true);
- setAttribute(Qt::WA_NoSystemBackground, true);
-
- setMouseTracking(true);
- Flickable::setAcceptMouseClick(this);
- }
-
-protected:
- // reimplement from Flickable
- virtual QPoint scrollOffset() const {
- return QPoint(0, m_offset);
- }
-
- // reimplement from Flickable
- virtual void setScrollOffset(const QPoint &offset) {
- int yy = offset.y();
- if (yy != m_offset) {
- m_offset = qBound(0, yy, m_height * m_colorNames.count() - height());
- update();
- }
- }
-
-protected:
- void paintEvent(QPaintEvent *event) {
- QPainter p(this);
- p.fillRect(event->rect(), Qt::white);
- int start = m_offset / m_height;
- int y = start * m_height - m_offset;
- if (m_offset <= 0) {
- start = 0;
- y = -m_offset;
- }
- int end = start + height() / m_height + 1;
- if (end > m_colorNames.count() - 1)
- end = m_colorNames.count() - 1;
- for (int i = start; i <= end; ++i, y += m_height) {
-
- p.setBrush(Qt::NoBrush);
- p.setPen(Qt::black);
- if (i == m_highlight) {
- p.fillRect(0, y, width(), m_height, QColor(0, 64, 128));
- p.setPen(Qt::white);
- }
- if (i == m_selected) {
- p.fillRect(0, y, width(), m_height, QColor(0, 128, 240));
- p.setPen(Qt::white);
- }
-
- p.drawText(m_height + 2, y, width(), m_height, Qt::AlignVCenter, m_colorNames[i]);
-
- p.setPen(Qt::NoPen);
- p.setBrush(m_firstColor[i]);
- p.drawRect(1, y + 1, m_height - 2, m_height - 2);
- p.setBrush(m_secondColor[i]);
- p.drawRect(5, y + 5, m_height - 11, m_height - 11);
- }
- p.end();
- }
-
- void keyReleaseEvent(QKeyEvent *event) {
- if (event->key() == Qt::Key_Down) {
- m_offset += 20;
- event->accept();
- update();
- return;
- }
- if (event->key() == Qt::Key_Up) {
- m_offset -= 20;
- event->accept();
- update();
- return;
- }
- }
-
- void mousePressEvent(QMouseEvent *event) {
- Flickable::handleMousePress(event);
- if (event->isAccepted())
- return;
-
- if (event->button() == Qt::LeftButton) {
- int y = event->pos().y() + m_offset;
- int i = y / m_height;
- if (i != m_highlight) {
- m_highlight = i;
- m_selected = -1;
- update();
- }
- event->accept();
- }
- }
-
- void mouseMoveEvent(QMouseEvent *event) {
- Flickable::handleMouseMove(event);
- }
-
- void mouseReleaseEvent(QMouseEvent *event) {
- Flickable::handleMouseRelease(event);
- if (event->isAccepted())
- return;
-
- if (event->button() == Qt::LeftButton) {
- m_selected = m_highlight;
- event->accept();
- update();
- }
- }
-
-private:
- int m_offset;
- int m_height;
- int m_highlight;
- int m_selected;
- QStringList m_colorNames;
- QList<QColor> m_firstColor;
- QList<QColor> m_secondColor;
-};
-
-#include "main.moc"
-
-int main(int argc, char *argv[])
-{
- QApplication app(argc, argv);
-
- ColorList list;
- list.setWindowTitle("Kinetic Scrolling");
-#if defined(Q_OS_SYMBIAN) || defined(Q_OS_WINCE_WM)
- list.showMaximized();
-#else
- list.resize(320, 320);
- list.show();
-#endif
-
- return app.exec();
-}
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