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Fix pie animation chrash
Fix pie animation chrash

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r2242:2523dbee7254
r2321:9b8615dbb840
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scroller.cpp
216 lines | 5.1 KiB | text/x-c | CppLexer
Michal Klocek
Refactor qledgend handling...
r855 /****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "scroller_p.h"
#include "qlegend.h"
#include <QGraphicsSceneMouseEvent>
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Improves build configuration...
r996 #include <QDebug>
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r855
QTCOMMERCIALCHART_BEGIN_NAMESPACE
Jani Honkonen
astyle and manual coding style fixes for src-folder
r2097 Scroller::Scroller()
: m_ticker(this),
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r2189 m_timeTresholdMin(50),
m_timeTresholdMax(300),
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moving mouse event handling logic to scroller
r2199 m_state(Idle),
m_treshold(10)
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r855 {
}
Scroller::~Scroller()
{
}
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r2189 void Scroller::move(const QPointF &delta)
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r855 {
switch (m_state) {
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r2199 case Pressed:
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r2189 m_timeStamp = QTime::currentTime();
break;
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r855 case Scroll:
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r2189 stopTicker();
m_timeStamp = QTime::currentTime();
break;
default:
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r855 break;
}
sauimone
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r2189 setOffset(offset() - delta);
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r855 }
sauimone
better implementation of mouse event handling in legend
r2197 void Scroller::scrollTo(const QPointF &delta)
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r855 {
sauimone
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r2189 // Starts scrolling, if at least m_timeTresholdMin msecs has gone since timestamp
// current time is no more than m_timeTresholdMax from timestamp
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r855
sauimone
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r2189 if ((m_timeStamp.elapsed() > m_timeTresholdMin) && (m_timeStamp.msecsTo(QTime::currentTime()) < m_timeTresholdMax)) {
// Release was quick enough. Start scrolling.
sauimone
accurate speed calculation to kinetic scrolling
r2190 qreal interval = 25;
qreal time = m_timeStamp.msecsTo(QTime::currentTime());
Marek Rosa
Replaced qFuzzyIsNull with qFuzzyCompare. Once qchart test case still uses qFuzzyIsNull becasue it started failing when qFuzzyCompare was used
r2242 if (qFuzzyCompare(time, 0)) {
sauimone
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r2190 m_speed = delta / 5;
sauimone
minor code style fix
r2191 } else {
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r2190 m_speed = delta * interval / time;
sauimone
minor code style fix
r2191 }
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r855
sauimone
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r2189 qreal fraction = qMax(qAbs(m_speed.x()), qAbs(m_speed.y()));
Marek Rosa
Replaced qFuzzyIsNull with qFuzzyCompare. Once qchart test case still uses qFuzzyIsNull becasue it started failing when qFuzzyCompare was used
r2242 if (!qFuzzyCompare(fraction, 0)) {
sauimone
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r2189 m_fraction.setX(qAbs(m_speed.x() / fraction));
m_fraction.setY(qAbs(m_speed.y() / fraction));
} else {
m_fraction.setX(1);
m_fraction.setY(1);
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r855 }
sauimone
accurate speed calculation to kinetic scrolling
r2190 startTicker(interval);
sauimone
Kinetic scrolling is back for legend
r2189 } else {
stopTicker(); // Stop ticker, if one is running.
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r855 }
}
sauimone
moving mouse event handling logic to scroller
r2199 void Scroller::handleMousePressEvent(QGraphicsSceneMouseEvent *event)
{
stopTicker();
m_pressPos = event->screenPos();
m_lastPos = m_pressPos;
m_state = Pressed;
event->accept();
}
void Scroller::handleMouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
QPointF delta = event->screenPos() - m_lastPos;
switch (m_state) {
case Pressed: {
// calculate treshold. If enough, change to move state and send out move deltas.
if (qAbs(delta.x()) > m_treshold || qAbs(delta.y()) > m_treshold) {
m_lastPos = event->screenPos();
move(delta);
m_state = Move;
}
event->accept();
break;
}
case Move: {
m_lastPos = event->screenPos();
move(delta);
event->accept();
break;
}
case Idle:
default: {
event->ignore();
break;
}
}
}
void Scroller::handleMouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
switch (m_state) {
case Move:
{
scrollTo(m_lastPos - m_pressPos);
event->accept();
break;
}
default:
{
m_state = Idle;
event->ignore();
break;
}
}
}
sauimone
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r2189 void Scroller::startTicker(int interval)
sauimone
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r2183 {
sauimone
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r2189 m_state = Scroll;
m_ticker.start(interval);
sauimone
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r2183 }
sauimone
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r2189 void Scroller::stopTicker()
{
m_state = Idle;
m_ticker.stop();
}
sauimone
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r2183
Michal Klocek
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r855 void Scroller::scrollTick()
{
switch (m_state) {
Jani Honkonen
astyle and manual coding style fixes for src-folder
r2097 case Scroll:
lowerSpeed(m_speed);
sauimone
Kinetic scrolling is back for legend
r2189 setOffset(offset() - m_speed);
Jani Honkonen
astyle and manual coding style fixes for src-folder
r2097 if (m_speed == QPointF(0, 0)) {
m_state = Idle;
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Refactor qledgend handling...
r855 m_ticker.stop();
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astyle and manual coding style fixes for src-folder
r2097 }
break;
sauimone
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r2199 default:
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astyle and manual coding style fixes for src-folder
r2097 qWarning() << __FUNCTION__ << "Scroller unexpected state" << m_state;
m_ticker.stop();
sauimone
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r2189 m_state = Idle;
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r855 break;
}
}
Jani Honkonen
more coding style fixes for src-folder...
r2104 void Scroller::lowerSpeed(QPointF &speed, qreal maxSpeed)
Michal Klocek
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r855 {
qreal x = qBound(-maxSpeed, speed.x(), maxSpeed);
qreal y = qBound(-maxSpeed, speed.y(), maxSpeed);
x = (x == 0) ? x :
(x > 0) ? qMax(qreal(0), x - m_fraction.x()) : qMin(qreal(0), x + m_fraction.x());
y = (y == 0) ? y :
(y > 0) ? qMax(qreal(0), y - m_fraction.y()) : qMin(qreal(0), y + m_fraction.y());
speed.setX(x);
speed.setY(y);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Jani Honkonen
more coding style fixes for src-folder...
r2104 ScrollTicker::ScrollTicker(Scroller *scroller, QObject *parent)
Jani Honkonen
astyle and manual coding style fixes for src-folder
r2097 : QObject(parent),
m_scroller(scroller)
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r855 {
}
void ScrollTicker::start(int interval)
{
Jani Honkonen
astyle and manual coding style fixes for src-folder
r2097 if (!m_timer.isActive())
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r855 m_timer.start(interval, this);
}
void ScrollTicker::stop()
{
m_timer.stop();
}
void ScrollTicker::timerEvent(QTimerEvent *event)
{
Q_UNUSED(event);
m_scroller->scrollTick();
}
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Krazy reported errors...
r974 #include "moc_scroller_p.cpp"
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r855 QTCOMMERCIALCHART_END_NAMESPACE