--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/demos/embedded/flickable/main.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,233 @@
+/****************************************************************************
+**
+** 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 demonstration applications 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 <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();
+}