diff options
Diffstat (limited to 'examples/embedded/flickable/main.cpp')
| -rw-r--r-- | examples/embedded/flickable/main.cpp | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/examples/embedded/flickable/main.cpp b/examples/embedded/flickable/main.cpp deleted file mode 100644 index 139baa6ba7..0000000000 --- a/examples/embedded/flickable/main.cpp +++ /dev/null @@ -1,237 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the demonstration applications of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QtCore> -#include <QtWidgets> - -#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 = QRandomGenerator::global()->bounded(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 = nullptr) - : 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) { - const QString c = colors[i]; - const QString str = QString::asprintf("%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->position().toPoint().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"); - list.resize(320, 320); - list.show(); - - return app.exec(); -} |