83a5694dc2
Qt copyrights are now in The Qt Company, so we could update the source code headers accordingly. In the same go we should also fix the links to point to qt.io. Outdated header.LGPL removed (use header.LGPL21 instead) Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing combination. New header.LGPL-COMM taken in the use file which were using old header.LGPL3 (src/plugins/platforms/android/extract.cpp) Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license combination Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
410 lines
13 KiB
C++
410 lines
13 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2015 The Qt Company Ltd.
|
|
** Contact: http://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the demonstration applications of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:LGPL21$
|
|
** 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 http://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at http://www.qt.io/contact-us.
|
|
**
|
|
** 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 or version 3 as published by the Free
|
|
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
|
|
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
|
|
** following information to ensure the GNU Lesser General Public License
|
|
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
|
|
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
|
**
|
|
** As a special exception, The Qt Company gives you certain additional
|
|
** rights. These rights are described in The Qt Company LGPL Exception
|
|
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#ifdef QT_OPENGL_SUPPORT
|
|
#include <QGLWidget>
|
|
#endif
|
|
|
|
#include "arthurwidgets.h"
|
|
#include "hoverpoints.h"
|
|
|
|
#include <algorithm>
|
|
|
|
#define printf
|
|
|
|
HoverPoints::HoverPoints(QWidget *widget, PointShape shape)
|
|
: QObject(widget)
|
|
{
|
|
m_widget = widget;
|
|
widget->installEventFilter(this);
|
|
widget->setAttribute(Qt::WA_AcceptTouchEvents);
|
|
|
|
m_connectionType = CurveConnection;
|
|
m_sortType = NoSort;
|
|
m_shape = shape;
|
|
m_pointPen = QPen(QColor(255, 255, 255, 191), 1);
|
|
m_connectionPen = QPen(QColor(255, 255, 255, 127), 2);
|
|
m_pointBrush = QBrush(QColor(191, 191, 191, 127));
|
|
m_pointSize = QSize(11, 11);
|
|
m_currentIndex = -1;
|
|
m_editable = true;
|
|
m_enabled = true;
|
|
|
|
connect(this, SIGNAL(pointsChanged(QPolygonF)),
|
|
m_widget, SLOT(update()));
|
|
}
|
|
|
|
|
|
void HoverPoints::setEnabled(bool enabled)
|
|
{
|
|
if (m_enabled != enabled) {
|
|
m_enabled = enabled;
|
|
m_widget->update();
|
|
}
|
|
}
|
|
|
|
|
|
bool HoverPoints::eventFilter(QObject *object, QEvent *event)
|
|
{
|
|
if (object == m_widget && m_enabled) {
|
|
switch (event->type()) {
|
|
|
|
case QEvent::MouseButtonPress:
|
|
{
|
|
if (!m_fingerPointMapping.isEmpty())
|
|
return true;
|
|
QMouseEvent *me = (QMouseEvent *) event;
|
|
|
|
QPointF clickPos = me->pos();
|
|
int index = -1;
|
|
for (int i=0; i<m_points.size(); ++i) {
|
|
QPainterPath path;
|
|
if (m_shape == CircleShape)
|
|
path.addEllipse(pointBoundingRect(i));
|
|
else
|
|
path.addRect(pointBoundingRect(i));
|
|
|
|
if (path.contains(clickPos)) {
|
|
index = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (me->button() == Qt::LeftButton) {
|
|
if (index == -1) {
|
|
if (!m_editable)
|
|
return false;
|
|
int pos = 0;
|
|
// Insert sort for x or y
|
|
if (m_sortType == XSort) {
|
|
for (int i=0; i<m_points.size(); ++i)
|
|
if (m_points.at(i).x() > clickPos.x()) {
|
|
pos = i;
|
|
break;
|
|
}
|
|
} else if (m_sortType == YSort) {
|
|
for (int i=0; i<m_points.size(); ++i)
|
|
if (m_points.at(i).y() > clickPos.y()) {
|
|
pos = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
m_points.insert(pos, clickPos);
|
|
m_locks.insert(pos, 0);
|
|
m_currentIndex = pos;
|
|
firePointChange();
|
|
} else {
|
|
m_currentIndex = index;
|
|
}
|
|
return true;
|
|
|
|
} else if (me->button() == Qt::RightButton) {
|
|
if (index >= 0 && m_editable) {
|
|
if (m_locks[index] == 0) {
|
|
m_locks.remove(index);
|
|
m_points.remove(index);
|
|
}
|
|
firePointChange();
|
|
return true;
|
|
}
|
|
}
|
|
|
|
}
|
|
break;
|
|
|
|
case QEvent::MouseButtonRelease:
|
|
if (!m_fingerPointMapping.isEmpty())
|
|
return true;
|
|
m_currentIndex = -1;
|
|
break;
|
|
|
|
case QEvent::MouseMove:
|
|
if (!m_fingerPointMapping.isEmpty())
|
|
return true;
|
|
if (m_currentIndex >= 0)
|
|
movePoint(m_currentIndex, ((QMouseEvent *)event)->pos());
|
|
break;
|
|
case QEvent::TouchBegin:
|
|
case QEvent::TouchUpdate:
|
|
{
|
|
const QTouchEvent *const touchEvent = static_cast<const QTouchEvent*>(event);
|
|
const QList<QTouchEvent::TouchPoint> points = touchEvent->touchPoints();
|
|
const qreal pointSize = qMax(m_pointSize.width(), m_pointSize.height());
|
|
foreach (const QTouchEvent::TouchPoint &touchPoint, points) {
|
|
const int id = touchPoint.id();
|
|
switch (touchPoint.state()) {
|
|
case Qt::TouchPointPressed:
|
|
{
|
|
// find the point, move it
|
|
QSet<int> activePoints = QSet<int>::fromList(m_fingerPointMapping.values());
|
|
int activePoint = -1;
|
|
qreal distance = -1;
|
|
const int pointsCount = m_points.size();
|
|
const int activePointCount = activePoints.size();
|
|
if (pointsCount == 2 && activePointCount == 1) { // only two points
|
|
activePoint = activePoints.contains(0) ? 1 : 0;
|
|
} else {
|
|
for (int i=0; i<pointsCount; ++i) {
|
|
if (activePoints.contains(i))
|
|
continue;
|
|
|
|
qreal d = QLineF(touchPoint.pos(), m_points.at(i)).length();
|
|
if ((distance < 0 && d < 12 * pointSize) || d < distance) {
|
|
distance = d;
|
|
activePoint = i;
|
|
}
|
|
|
|
}
|
|
}
|
|
if (activePoint != -1) {
|
|
m_fingerPointMapping.insert(touchPoint.id(), activePoint);
|
|
movePoint(activePoint, touchPoint.pos());
|
|
}
|
|
}
|
|
break;
|
|
case Qt::TouchPointReleased:
|
|
{
|
|
// move the point and release
|
|
QHash<int,int>::iterator it = m_fingerPointMapping.find(id);
|
|
movePoint(it.value(), touchPoint.pos());
|
|
m_fingerPointMapping.erase(it);
|
|
}
|
|
break;
|
|
case Qt::TouchPointMoved:
|
|
{
|
|
// move the point
|
|
const int pointIdx = m_fingerPointMapping.value(id, -1);
|
|
if (pointIdx >= 0) // do we track this point?
|
|
movePoint(pointIdx, touchPoint.pos());
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
if (m_fingerPointMapping.isEmpty()) {
|
|
event->ignore();
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
break;
|
|
case QEvent::TouchEnd:
|
|
if (m_fingerPointMapping.isEmpty()) {
|
|
event->ignore();
|
|
return false;
|
|
}
|
|
return true;
|
|
break;
|
|
|
|
case QEvent::Resize:
|
|
{
|
|
QResizeEvent *e = (QResizeEvent *) event;
|
|
if (e->oldSize().width() == 0 || e->oldSize().height() == 0)
|
|
break;
|
|
qreal stretch_x = e->size().width() / qreal(e->oldSize().width());
|
|
qreal stretch_y = e->size().height() / qreal(e->oldSize().height());
|
|
for (int i=0; i<m_points.size(); ++i) {
|
|
QPointF p = m_points[i];
|
|
movePoint(i, QPointF(p.x() * stretch_x, p.y() * stretch_y), false);
|
|
}
|
|
|
|
firePointChange();
|
|
break;
|
|
}
|
|
|
|
case QEvent::Paint:
|
|
{
|
|
QWidget *that_widget = m_widget;
|
|
m_widget = 0;
|
|
QApplication::sendEvent(object, event);
|
|
m_widget = that_widget;
|
|
paintPoints();
|
|
#ifdef QT_OPENGL_SUPPORT
|
|
ArthurFrame *af = qobject_cast<ArthurFrame *>(that_widget);
|
|
if (af && af->usesOpenGL())
|
|
af->glWidget()->swapBuffers();
|
|
#endif
|
|
return true;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
void HoverPoints::paintPoints()
|
|
{
|
|
QPainter p;
|
|
#ifdef QT_OPENGL_SUPPORT
|
|
ArthurFrame *af = qobject_cast<ArthurFrame *>(m_widget);
|
|
if (af && af->usesOpenGL())
|
|
p.begin(af->glWidget());
|
|
else
|
|
p.begin(m_widget);
|
|
#else
|
|
p.begin(m_widget);
|
|
#endif
|
|
|
|
p.setRenderHint(QPainter::Antialiasing);
|
|
|
|
if (m_connectionPen.style() != Qt::NoPen && m_connectionType != NoConnection) {
|
|
p.setPen(m_connectionPen);
|
|
|
|
if (m_connectionType == CurveConnection) {
|
|
QPainterPath path;
|
|
path.moveTo(m_points.at(0));
|
|
for (int i=1; i<m_points.size(); ++i) {
|
|
QPointF p1 = m_points.at(i-1);
|
|
QPointF p2 = m_points.at(i);
|
|
qreal distance = p2.x() - p1.x();
|
|
|
|
path.cubicTo(p1.x() + distance / 2, p1.y(),
|
|
p1.x() + distance / 2, p2.y(),
|
|
p2.x(), p2.y());
|
|
}
|
|
p.drawPath(path);
|
|
} else {
|
|
p.drawPolyline(m_points);
|
|
}
|
|
}
|
|
|
|
p.setPen(m_pointPen);
|
|
p.setBrush(m_pointBrush);
|
|
|
|
for (int i=0; i<m_points.size(); ++i) {
|
|
QRectF bounds = pointBoundingRect(i);
|
|
if (m_shape == CircleShape)
|
|
p.drawEllipse(bounds);
|
|
else
|
|
p.drawRect(bounds);
|
|
}
|
|
}
|
|
|
|
static QPointF bound_point(const QPointF &point, const QRectF &bounds, int lock)
|
|
{
|
|
QPointF p = point;
|
|
|
|
qreal left = bounds.left();
|
|
qreal right = bounds.right();
|
|
qreal top = bounds.top();
|
|
qreal bottom = bounds.bottom();
|
|
|
|
if (p.x() < left || (lock & HoverPoints::LockToLeft)) p.setX(left);
|
|
else if (p.x() > right || (lock & HoverPoints::LockToRight)) p.setX(right);
|
|
|
|
if (p.y() < top || (lock & HoverPoints::LockToTop)) p.setY(top);
|
|
else if (p.y() > bottom || (lock & HoverPoints::LockToBottom)) p.setY(bottom);
|
|
|
|
return p;
|
|
}
|
|
|
|
void HoverPoints::setPoints(const QPolygonF &points)
|
|
{
|
|
if (points.size() != m_points.size())
|
|
m_fingerPointMapping.clear();
|
|
m_points.clear();
|
|
for (int i=0; i<points.size(); ++i)
|
|
m_points << bound_point(points.at(i), boundingRect(), 0);
|
|
|
|
m_locks.clear();
|
|
if (m_points.size() > 0) {
|
|
m_locks.resize(m_points.size());
|
|
|
|
m_locks.fill(0);
|
|
}
|
|
}
|
|
|
|
|
|
void HoverPoints::movePoint(int index, const QPointF &point, bool emitUpdate)
|
|
{
|
|
m_points[index] = bound_point(point, boundingRect(), m_locks.at(index));
|
|
if (emitUpdate)
|
|
firePointChange();
|
|
}
|
|
|
|
|
|
inline static bool x_less_than(const QPointF &p1, const QPointF &p2)
|
|
{
|
|
return p1.x() < p2.x();
|
|
}
|
|
|
|
|
|
inline static bool y_less_than(const QPointF &p1, const QPointF &p2)
|
|
{
|
|
return p1.y() < p2.y();
|
|
}
|
|
|
|
void HoverPoints::firePointChange()
|
|
{
|
|
// printf("HoverPoints::firePointChange(), current=%d\n", m_currentIndex);
|
|
|
|
if (m_sortType != NoSort) {
|
|
|
|
QPointF oldCurrent;
|
|
if (m_currentIndex != -1) {
|
|
oldCurrent = m_points[m_currentIndex];
|
|
}
|
|
|
|
if (m_sortType == XSort)
|
|
std::sort(m_points.begin(), m_points.end(), x_less_than);
|
|
else if (m_sortType == YSort)
|
|
std::sort(m_points.begin(), m_points.end(), y_less_than);
|
|
|
|
// Compensate for changed order...
|
|
if (m_currentIndex != -1) {
|
|
for (int i=0; i<m_points.size(); ++i) {
|
|
if (m_points[i] == oldCurrent) {
|
|
m_currentIndex = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// printf(" - firePointChange(), current=%d\n", m_currentIndex);
|
|
|
|
}
|
|
|
|
// for (int i=0; i<m_points.size(); ++i) {
|
|
// printf(" - point(%2d)=[%.2f, %.2f], lock=%d\n",
|
|
// i, m_points.at(i).x(), m_points.at(i).y(), m_locks.at(i));
|
|
// }
|
|
|
|
emit pointsChanged(m_points);
|
|
}
|