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OP-60 : Automatically move needles back to the right position if the dial is reloaded (config changed for example).

git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@878 ebee16cc-31ac-478f-84a7-5cbb03baadba
This commit is contained in:
edouard 2010-06-23 22:36:17 +00:00 committed by edouard
parent df2bed8dd0
commit ed895408cb

View File

@ -1,458 +1,456 @@
/**
******************************************************************************
*
* @file airspeedgadgetwidget.cpp
* @author David "Buzz" Carlson Copyright (C) 2010.
* @brief
* @see The GNU Public License (GPL) Version 3
* @defgroup dialplugin
* @{
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "airspeedgadgetwidget.h"
#include <iostream>
#include <QDebug>
AirspeedGadgetWidget::AirspeedGadgetWidget(QWidget *parent) : QGraphicsView(parent)
{
// TODO: create a proper "needle" object instead of hardcoding all this
// which is ugly (but easy).
setMinimumSize(64,64);
setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
setScene(new QGraphicsScene(this));
setRenderHints(QPainter::Antialiasing);
m_renderer = new QSvgRenderer();
obj1 = NULL;
obj2 = NULL;
obj3 = NULL;
// This timer mechanism makes needles rotate smoothly
connect(&dialTimer, SIGNAL(timeout()), this, SLOT(rotateNeedles()));
dialTimer.start(20);
}
AirspeedGadgetWidget::~AirspeedGadgetWidget()
{
// Do nothing
}
/*!
\brief Connects the widget to the relevant UAVObjects
*/
void AirspeedGadgetWidget::connectNeedles(QString object1, QString nfield1,
QString object2, QString nfield2,
QString object3, QString nfield3) {
if (obj1 != NULL)
disconnect(obj1,SIGNAL(objectUpdated(UAVObject*)),this,SLOT(updateNeedle1(UAVObject*)));
if (obj2 != NULL)
disconnect(obj2,SIGNAL(objectUpdated(UAVObject*)),this,SLOT(updateNeedle2(UAVObject*)));
if (obj3 != NULL)
disconnect(obj3,SIGNAL(objectUpdated(UAVObject*)),this,SLOT(updateNeedle3(UAVObject*)));
ExtensionSystem::PluginManager *pm = ExtensionSystem::PluginManager::instance();
UAVObjectManager *objManager = pm->getObject<UAVObjectManager>();
// Check validity of arguments first, reject empty args and unknown fields.
if (!(object1.isEmpty() || nfield1.isEmpty())) {
obj1 = dynamic_cast<UAVDataObject*>( objManager->getObject(object1) );
if (obj1 != NULL ) {
std::cout << "Connected Object 1 (" << object1.toStdString() << ")." << std::endl;
connect(obj1, SIGNAL(objectUpdated(UAVObject*)), this, SLOT(updateNeedle1(UAVObject*)));
field1 = nfield1;
} else {
std::cout << "Error: Object is unknown (" << object1.toStdString() << ")." << std::endl;
}
}
// And do the same for the second needle.
if (!(object2.isEmpty() || nfield2.isEmpty())) {
obj2 = dynamic_cast<UAVDataObject*>( objManager->getObject(object2) );
if (obj2 != NULL ) {
std::cout << "Connected Object 2 (" << object2.toStdString() << ")." << std::endl;
connect(obj2, SIGNAL(objectUpdated(UAVObject*)), this, SLOT(updateNeedle2(UAVObject*)));
field2 = nfield2;
} else {
std::cout << "Error: Object is unknown (" << object2.toStdString() << ")." << std::endl;
}
}
// And do the same for the third needle.
if (!(object3.isEmpty() || nfield3.isEmpty())) {
obj3 = dynamic_cast<UAVDataObject*>( objManager->getObject(object3) );
if (obj3 != NULL ) {
std::cout << "Connected Object 3 (" << object3.toStdString() << ")." << std::endl;
connect(obj3, SIGNAL(objectUpdated(UAVObject*)), this, SLOT(updateNeedle3(UAVObject*)));
field3 = nfield3;
} else {
std::cout << "Error: Object is unknown (" << object3.toStdString() << ")." << std::endl;
}
}
}
/*!
\brief Called by the UAVObject which got updated
*/
void AirspeedGadgetWidget::updateNeedle1(UAVObject *object1) {
// Double check that the field exists:
UAVObjectField* field = object1->getField(field1);
if (field) {
setNeedle1(field->getDouble());
} else {
std::cout << "Wrong field, maybe an issue with object disconnection ?" << std::endl;
}
}
/*!
\brief Called by the UAVObject which got updated
*/
void AirspeedGadgetWidget::updateNeedle2(UAVObject *object2) {
UAVObjectField* field = object2->getField(field2);
if (field) {
setNeedle2(field->getDouble());
} else {
std::cout << "Wrong field, maybe an issue with object disconnection ?" << std::endl;
}
}
/*!
\brief Called by the UAVObject which got updated
*/
void AirspeedGadgetWidget::updateNeedle3(UAVObject *object3) {
UAVObjectField* field = object3->getField(field3);
if (field) {
setNeedle3(field->getDouble());
} else {
std::cout << "Wrong field, maybe an issue with object disconnection ?" << std::endl;
}
}
/*
Initializes the dial file, and does all the one-time calculations for
display later.
*/
void AirspeedGadgetWidget::setDialFile(QString dfn, QString bg, QString fg, QString n1, QString n2,
QString n3, QString n1Move, QString n2Move, QString n3Move)
{
if (QFile::exists(dfn))
{
m_renderer->load(dfn);
if(m_renderer->isValid())
{
fgenabled = false;
n2enabled = false;
n3enabled = false;
QGraphicsScene *l_scene = scene();
l_scene->clear(); // Deletes all items contained in the scene as well.
m_background = new QGraphicsSvgItem();
// All other items will be clipped to the shape of the background
m_background->setFlags(QGraphicsItem::ItemClipsChildrenToShape|
QGraphicsItem::ItemClipsToShape);
m_foreground = new QGraphicsSvgItem();
m_needle1 = new QGraphicsSvgItem();
m_needle2 = new QGraphicsSvgItem();
m_needle3 = new QGraphicsSvgItem();
m_needle1->setParentItem(m_background);
m_needle2->setParentItem(m_background);
m_needle3->setParentItem(m_background);
m_foreground->setParentItem(m_background);
// We assume the dial contains at least the background
// and needle1
m_background->setSharedRenderer(m_renderer);
m_background->setElementId(bg);
l_scene->addItem(m_background);
m_needle1->setSharedRenderer(m_renderer);
m_needle1->setElementId(n1);
l_scene->addItem(m_needle1);
// The dial gadget allows Needle1 and Needle2 to be
// the same element, for combined movement. Needle3
// is always independent.
if (n1 == n2) {
m_needle2 = m_needle1;
n2enabled = true;
} else {
if (m_renderer->elementExists(n2)) {
m_needle2->setSharedRenderer(m_renderer);
m_needle2->setElementId(n2);
l_scene->addItem(m_needle2);
n2enabled = true;
}
}
if (m_renderer->elementExists(n3)) {
m_needle3->setSharedRenderer(m_renderer);
m_needle3->setElementId(n3);
l_scene->addItem(m_needle3);
n3enabled = true;
}
if (m_renderer->elementExists(fg)) {
m_foreground->setSharedRenderer(m_renderer);
m_foreground->setElementId(fg);
l_scene->addItem(m_foreground);
fgenabled = true;
}
rotateN1 = false;
horizN1 = false;
vertN1 = false;
rotateN2 = false;
horizN2 = false;
vertN2 = false;
rotateN3 = false;
horizN3 = false;
vertN3 = false;
// Now setup the rotation/translation settings:
// this is UGLY UGLY UGLY, sorry...
if (n1Move.contains("Rotate")) {
rotateN1 = true;
} else if (n1Move.contains("Horizontal")) {
horizN1 = true;
} else if (n1Move.contains("Vertical")) {
vertN1 = true;
}
if (n2Move.contains("Rotate")) {
rotateN2 = true;
} else if (n2Move.contains("Horizontal")) {
horizN2 = true;
} else if (n2Move.contains("Vertical")) {
vertN2 = true;
}
if (n3Move.contains("Rotate")) {
rotateN3 = true;
} else if (n3Move.contains("Horizontal")) {
horizN3 = true;
} else if (n3Move.contains("Vertical")) {
vertN3 = true;
}
l_scene->setSceneRect(m_background->boundingRect());
// Now Initialize the center for all transforms of the dial needles to the
// center of the background:
// - Move the center of the needle to the center of the background.
QRectF rectB = m_background->boundingRect();
QRectF rectN = m_needle1->boundingRect();
m_needle1->setPos(rectB.width()/2-rectN.width()/2,rectB.height()/2-rectN.height()/2);
// - Put the transform origin point of the needle at its center.
m_needle1->setTransformOriginPoint(rectN.width()/2,rectN.height()/2);
if ((n1 != n2) && n2enabled) {
// Only do it for needle1 if it is not the same as n2
rectN = m_needle2->boundingRect();
m_needle2->setPos(rectB.width()/2-rectN.width()/2,rectB.height()/2-rectN.height()/2);
m_needle2->setTransformOriginPoint(rectN.width()/2,rectN.height()/2);
}
if (n3enabled) {
rectN = m_needle3->boundingRect();
m_needle3->setPos(rectB.width()/2-rectN.width()/2,rectB.height()/2-rectN.height()/2);
m_needle3->setTransformOriginPoint(rectN.width()/2,rectN.height()/2);
}
// Last: we just loaded the dial file which is by default valid for a "zero" value
// of the needles, so we have to reset the needles too upon dial file loading, otherwise
// we would end up with an offset when we change a dial file and the needle value
// is not zero at that time.
needle1Target = 0;
needle2Target = 0;
needle3Target = 0;
needle1Value = 0;
needle2Value = 0;
needle3Value = 0;
}
}
else
{ std::cout<<"no file: "<<std::endl; }
}
void AirspeedGadgetWidget::paint()
{
update();
}
void AirspeedGadgetWidget::paintEvent(QPaintEvent *event)
{
// Skip painting until the dial file is loaded
if (! m_renderer->isValid()) {
std::cout<<"Dial file not loaded, not rendering"<<std::endl;
return;
}
QGraphicsView::paintEvent(event);
}
// This event enables the dial to be dynamically resized
// whenever the gadget is resized, taking advantage of the vector
// nature of SVG dials.
void AirspeedGadgetWidget::resizeEvent(QResizeEvent *event)
{
fitInView(m_background, Qt::KeepAspectRatio );
}
// Converts the value into an angle:
// this enables smooth rotation in rotateNeedles below
void AirspeedGadgetWidget::setNeedle1(double value) {
if (rotateN1) {
needle1Target = 360*value*n1Factor/(n1MaxValue-n1MinValue);
}
if (horizN1) {
needle1Target = value*n1Factor/(n1MaxValue-n1MinValue);
}
if (vertN1) {
needle1Target = value*n1Factor/(n1MaxValue-n1MinValue);
}
if (!dialTimer.isActive())
dialTimer.start();
}
void AirspeedGadgetWidget::setNeedle2(double value) {
if (rotateN2) {
needle2Target = 360*value*n2Factor/(n2MaxValue-n2MinValue);
}
if (horizN2) {
needle2Target = value*n2Factor/(n2MaxValue-n2MinValue);
}
if (vertN2) {
needle2Target = value*n2Factor/(n2MaxValue-n2MinValue);
}
if (!dialTimer.isActive())
dialTimer.start();
}
void AirspeedGadgetWidget::setNeedle3(double value) {
if (rotateN3) {
needle3Target = 360*value*n3Factor/(n3MaxValue-n3MinValue);
}
if (horizN3) {
needle3Target = value*n3Factor/(n3MaxValue-n3MinValue);
}
if (vertN3) {
needle3Target = value*n3Factor/(n3MaxValue-n3MinValue);
}
if (!dialTimer.isActive())
dialTimer.start();
}
// Take an input value and rotate the dial accordingly
// Rotation is smooth, starts fast and slows down when
// approaching the target.
// We aim for a 0.5 degree precision.
//
// Note: this code is valid even if needle1 and needle2 point
// to the same element.
void AirspeedGadgetWidget::rotateNeedles()
{
int dialRun = 3;
if (n2enabled) {
if (abs((needle2Value-needle2Target)*10) > 5) {
double needle2Diff;
needle2Diff =(needle2Target - needle2Value)/5;
if (rotateN2) {
m_needle2->setRotation(m_needle2->rotation()+needle2Diff);
} else {
QPointF opd = QPointF(0,0);
if (horizN2) {
opd = QPointF(needle2Diff,0);
}
if (vertN2) {
opd = QPointF(0,needle2Diff);
}
m_needle2->setTransform(QTransform::fromTranslate(opd.x(),opd.y()), true);
// Since we have moved the needle, we need to move
// the transform origin point the opposite way
// so that it keeps rotating from the same point.
// (this is only useful if needle1 and needle2 are the
// same object, for combined movement such as attitude indicator).
QPointF oop = m_needle2->transformOriginPoint();
m_needle2->setTransformOriginPoint(oop.x()-opd.x(),oop.y()-opd.y());
}
needle2Value += needle2Diff;
} else {
needle2Value = needle2Target;
dialRun--;
}
} else {
dialRun--;
}
// We assume that needle1 always exists!
if ((abs((needle1Value-needle1Target)*10) > 5)) {
double needle1Diff;
needle1Diff = (needle1Target - needle1Value)/5;
if (rotateN1) {
m_needle1->setRotation(m_needle1->rotation()+needle1Diff);
} else {
QPointF opd = QPointF(0,0);
if (horizN1) {
opd = QPointF(needle1Diff,0);
}
if (vertN1) {
opd = QPointF(0,needle1Diff);
}
m_needle1->setTransform(QTransform::fromTranslate(opd.x(),opd.y()), true);
QPointF oop = m_needle1->transformOriginPoint();
m_needle1->setTransformOriginPoint((oop.x()-opd.x()),(oop.y()-opd.y()));
}
needle1Value += needle1Diff;
} else { // value is close enough to target, value to exact target
// to cancel out any potential drift
needle1Value = needle1Target;
dialRun--;
}
if (n3enabled) {
if ((abs((needle3Value-needle3Target)*10) > 5)) {
double needle3Diff;
needle3Diff = (needle3Target - needle3Value)/5;
if (rotateN3) {
m_needle3->setRotation(m_needle3->rotation()+needle3Diff);
} else {
QPointF opd = QPointF(0,0);
if (horizN3) {
opd = QPointF(needle3Diff,0);
}
if (vertN3) {
opd = QPointF(0,needle3Diff);
}
m_needle3->setTransform(QTransform::fromTranslate(opd.x(),opd.y()), true);
QPointF oop = m_needle3->transformOriginPoint();
m_needle3->setTransformOriginPoint((oop.x()-opd.x()),(oop.y()-opd.y()));
}
needle3Value += needle3Diff;
} else {
needle3Value = needle3Target;
dialRun--;
}
} else {
dialRun--;
}
update();
// Now check: if dialRun is now zero, we should
// just stop the timer since all needles have finished moving
if (!dialRun) dialTimer.stop();
}
/**
******************************************************************************
*
* @file airspeedgadgetwidget.cpp
* @author David "Buzz" Carlson Copyright (C) 2010.
* @brief
* @see The GNU Public License (GPL) Version 3
* @defgroup dialplugin
* @{
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "airspeedgadgetwidget.h"
#include <iostream>
#include <QDebug>
AirspeedGadgetWidget::AirspeedGadgetWidget(QWidget *parent) : QGraphicsView(parent)
{
// TODO: create a proper "needle" object instead of hardcoding all this
// which is ugly (but easy).
setMinimumSize(64,64);
setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
setScene(new QGraphicsScene(this));
setRenderHints(QPainter::Antialiasing);
m_renderer = new QSvgRenderer();
obj1 = NULL;
obj2 = NULL;
obj3 = NULL;
// This timer mechanism makes needles rotate smoothly
connect(&dialTimer, SIGNAL(timeout()), this, SLOT(rotateNeedles()));
dialTimer.start(20);
}
AirspeedGadgetWidget::~AirspeedGadgetWidget()
{
// Do nothing
}
/*!
\brief Connects the widget to the relevant UAVObjects
*/
void AirspeedGadgetWidget::connectNeedles(QString object1, QString nfield1,
QString object2, QString nfield2,
QString object3, QString nfield3) {
if (obj1 != NULL)
disconnect(obj1,SIGNAL(objectUpdated(UAVObject*)),this,SLOT(updateNeedle1(UAVObject*)));
if (obj2 != NULL)
disconnect(obj2,SIGNAL(objectUpdated(UAVObject*)),this,SLOT(updateNeedle2(UAVObject*)));
if (obj3 != NULL)
disconnect(obj3,SIGNAL(objectUpdated(UAVObject*)),this,SLOT(updateNeedle3(UAVObject*)));
ExtensionSystem::PluginManager *pm = ExtensionSystem::PluginManager::instance();
UAVObjectManager *objManager = pm->getObject<UAVObjectManager>();
// Check validity of arguments first, reject empty args and unknown fields.
if (!(object1.isEmpty() || nfield1.isEmpty())) {
obj1 = dynamic_cast<UAVDataObject*>( objManager->getObject(object1) );
if (obj1 != NULL ) {
std::cout << "Connected Object 1 (" << object1.toStdString() << ")." << std::endl;
connect(obj1, SIGNAL(objectUpdated(UAVObject*)), this, SLOT(updateNeedle1(UAVObject*)));
field1 = nfield1;
} else {
std::cout << "Error: Object is unknown (" << object1.toStdString() << ")." << std::endl;
}
}
// And do the same for the second needle.
if (!(object2.isEmpty() || nfield2.isEmpty())) {
obj2 = dynamic_cast<UAVDataObject*>( objManager->getObject(object2) );
if (obj2 != NULL ) {
std::cout << "Connected Object 2 (" << object2.toStdString() << ")." << std::endl;
connect(obj2, SIGNAL(objectUpdated(UAVObject*)), this, SLOT(updateNeedle2(UAVObject*)));
field2 = nfield2;
} else {
std::cout << "Error: Object is unknown (" << object2.toStdString() << ")." << std::endl;
}
}
// And do the same for the third needle.
if (!(object3.isEmpty() || nfield3.isEmpty())) {
obj3 = dynamic_cast<UAVDataObject*>( objManager->getObject(object3) );
if (obj3 != NULL ) {
std::cout << "Connected Object 3 (" << object3.toStdString() << ")." << std::endl;
connect(obj3, SIGNAL(objectUpdated(UAVObject*)), this, SLOT(updateNeedle3(UAVObject*)));
field3 = nfield3;
} else {
std::cout << "Error: Object is unknown (" << object3.toStdString() << ")." << std::endl;
}
}
}
/*!
\brief Called by the UAVObject which got updated
*/
void AirspeedGadgetWidget::updateNeedle1(UAVObject *object1) {
// Double check that the field exists:
UAVObjectField* field = object1->getField(field1);
if (field) {
setNeedle1(field->getDouble());
} else {
std::cout << "Wrong field, maybe an issue with object disconnection ?" << std::endl;
}
}
/*!
\brief Called by the UAVObject which got updated
*/
void AirspeedGadgetWidget::updateNeedle2(UAVObject *object2) {
UAVObjectField* field = object2->getField(field2);
if (field) {
setNeedle2(field->getDouble());
} else {
std::cout << "Wrong field, maybe an issue with object disconnection ?" << std::endl;
}
}
/*!
\brief Called by the UAVObject which got updated
*/
void AirspeedGadgetWidget::updateNeedle3(UAVObject *object3) {
UAVObjectField* field = object3->getField(field3);
if (field) {
setNeedle3(field->getDouble());
} else {
std::cout << "Wrong field, maybe an issue with object disconnection ?" << std::endl;
}
}
/*
Initializes the dial file, and does all the one-time calculations for
display later.
*/
void AirspeedGadgetWidget::setDialFile(QString dfn, QString bg, QString fg, QString n1, QString n2,
QString n3, QString n1Move, QString n2Move, QString n3Move)
{
if (QFile::exists(dfn))
{
m_renderer->load(dfn);
if(m_renderer->isValid())
{
fgenabled = false;
n2enabled = false;
n3enabled = false;
QGraphicsScene *l_scene = scene();
l_scene->clear(); // Deletes all items contained in the scene as well.
m_background = new QGraphicsSvgItem();
// All other items will be clipped to the shape of the background
m_background->setFlags(QGraphicsItem::ItemClipsChildrenToShape|
QGraphicsItem::ItemClipsToShape);
m_foreground = new QGraphicsSvgItem();
m_needle1 = new QGraphicsSvgItem();
m_needle2 = new QGraphicsSvgItem();
m_needle3 = new QGraphicsSvgItem();
m_needle1->setParentItem(m_background);
m_needle2->setParentItem(m_background);
m_needle3->setParentItem(m_background);
m_foreground->setParentItem(m_background);
// We assume the dial contains at least the background
// and needle1
m_background->setSharedRenderer(m_renderer);
m_background->setElementId(bg);
l_scene->addItem(m_background);
m_needle1->setSharedRenderer(m_renderer);
m_needle1->setElementId(n1);
l_scene->addItem(m_needle1);
// The dial gadget allows Needle1 and Needle2 to be
// the same element, for combined movement. Needle3
// is always independent.
if (n1 == n2) {
m_needle2 = m_needle1;
n2enabled = true;
} else {
if (m_renderer->elementExists(n2)) {
m_needle2->setSharedRenderer(m_renderer);
m_needle2->setElementId(n2);
l_scene->addItem(m_needle2);
n2enabled = true;
}
}
if (m_renderer->elementExists(n3)) {
m_needle3->setSharedRenderer(m_renderer);
m_needle3->setElementId(n3);
l_scene->addItem(m_needle3);
n3enabled = true;
}
if (m_renderer->elementExists(fg)) {
m_foreground->setSharedRenderer(m_renderer);
m_foreground->setElementId(fg);
l_scene->addItem(m_foreground);
fgenabled = true;
}
rotateN1 = false;
horizN1 = false;
vertN1 = false;
rotateN2 = false;
horizN2 = false;
vertN2 = false;
rotateN3 = false;
horizN3 = false;
vertN3 = false;
// Now setup the rotation/translation settings:
// this is UGLY UGLY UGLY, sorry...
if (n1Move.contains("Rotate")) {
rotateN1 = true;
} else if (n1Move.contains("Horizontal")) {
horizN1 = true;
} else if (n1Move.contains("Vertical")) {
vertN1 = true;
}
if (n2Move.contains("Rotate")) {
rotateN2 = true;
} else if (n2Move.contains("Horizontal")) {
horizN2 = true;
} else if (n2Move.contains("Vertical")) {
vertN2 = true;
}
if (n3Move.contains("Rotate")) {
rotateN3 = true;
} else if (n3Move.contains("Horizontal")) {
horizN3 = true;
} else if (n3Move.contains("Vertical")) {
vertN3 = true;
}
l_scene->setSceneRect(m_background->boundingRect());
// Now Initialize the center for all transforms of the dial needles to the
// center of the background:
// - Move the center of the needle to the center of the background.
QRectF rectB = m_background->boundingRect();
QRectF rectN = m_needle1->boundingRect();
m_needle1->setPos(rectB.width()/2-rectN.width()/2,rectB.height()/2-rectN.height()/2);
// - Put the transform origin point of the needle at its center.
m_needle1->setTransformOriginPoint(rectN.width()/2,rectN.height()/2);
if ((n1 != n2) && n2enabled) {
// Only do it for needle1 if it is not the same as n2
rectN = m_needle2->boundingRect();
m_needle2->setPos(rectB.width()/2-rectN.width()/2,rectB.height()/2-rectN.height()/2);
m_needle2->setTransformOriginPoint(rectN.width()/2,rectN.height()/2);
}
if (n3enabled) {
rectN = m_needle3->boundingRect();
m_needle3->setPos(rectB.width()/2-rectN.width()/2,rectB.height()/2-rectN.height()/2);
m_needle3->setTransformOriginPoint(rectN.width()/2,rectN.height()/2);
}
// Last: we just loaded the dial file which is by default valid for a "zero" value
// of the needles, so we have to reset the needles too upon dial file loading, otherwise
// we would end up with an offset when we change a dial file and the needle value
// is not zero at that time.
needle1Value = 0;
needle2Value = 0;
needle3Value = 0;
if (!dialTimer.isActive())
dialTimer.start();
}
}
else
{ std::cout<<"no file: "<<std::endl; }
}
void AirspeedGadgetWidget::paint()
{
update();
}
void AirspeedGadgetWidget::paintEvent(QPaintEvent *event)
{
// Skip painting until the dial file is loaded
if (! m_renderer->isValid()) {
std::cout<<"Dial file not loaded, not rendering"<<std::endl;
return;
}
QGraphicsView::paintEvent(event);
}
// This event enables the dial to be dynamically resized
// whenever the gadget is resized, taking advantage of the vector
// nature of SVG dials.
void AirspeedGadgetWidget::resizeEvent(QResizeEvent *event)
{
fitInView(m_background, Qt::KeepAspectRatio );
}
// Converts the value into an angle:
// this enables smooth rotation in rotateNeedles below
void AirspeedGadgetWidget::setNeedle1(double value) {
if (rotateN1) {
needle1Target = 360*value*n1Factor/(n1MaxValue-n1MinValue);
}
if (horizN1) {
needle1Target = value*n1Factor/(n1MaxValue-n1MinValue);
}
if (vertN1) {
needle1Target = value*n1Factor/(n1MaxValue-n1MinValue);
}
if (!dialTimer.isActive())
dialTimer.start();
}
void AirspeedGadgetWidget::setNeedle2(double value) {
if (rotateN2) {
needle2Target = 360*value*n2Factor/(n2MaxValue-n2MinValue);
}
if (horizN2) {
needle2Target = value*n2Factor/(n2MaxValue-n2MinValue);
}
if (vertN2) {
needle2Target = value*n2Factor/(n2MaxValue-n2MinValue);
}
if (!dialTimer.isActive())
dialTimer.start();
}
void AirspeedGadgetWidget::setNeedle3(double value) {
if (rotateN3) {
needle3Target = 360*value*n3Factor/(n3MaxValue-n3MinValue);
}
if (horizN3) {
needle3Target = value*n3Factor/(n3MaxValue-n3MinValue);
}
if (vertN3) {
needle3Target = value*n3Factor/(n3MaxValue-n3MinValue);
}
if (!dialTimer.isActive())
dialTimer.start();
}
// Take an input value and rotate the dial accordingly
// Rotation is smooth, starts fast and slows down when
// approaching the target.
// We aim for a 0.5 degree precision.
//
// Note: this code is valid even if needle1 and needle2 point
// to the same element.
void AirspeedGadgetWidget::rotateNeedles()
{
int dialRun = 3;
if (n2enabled) {
if (abs((needle2Value-needle2Target)*10) > 5) {
double needle2Diff;
needle2Diff =(needle2Target - needle2Value)/5;
if (rotateN2) {
m_needle2->setRotation(m_needle2->rotation()+needle2Diff);
} else {
QPointF opd = QPointF(0,0);
if (horizN2) {
opd = QPointF(needle2Diff,0);
}
if (vertN2) {
opd = QPointF(0,needle2Diff);
}
m_needle2->setTransform(QTransform::fromTranslate(opd.x(),opd.y()), true);
// Since we have moved the needle, we need to move
// the transform origin point the opposite way
// so that it keeps rotating from the same point.
// (this is only useful if needle1 and needle2 are the
// same object, for combined movement such as attitude indicator).
QPointF oop = m_needle2->transformOriginPoint();
m_needle2->setTransformOriginPoint(oop.x()-opd.x(),oop.y()-opd.y());
}
needle2Value += needle2Diff;
} else {
needle2Value = needle2Target;
dialRun--;
}
} else {
dialRun--;
}
// We assume that needle1 always exists!
if ((abs((needle1Value-needle1Target)*10) > 5)) {
double needle1Diff;
needle1Diff = (needle1Target - needle1Value)/5;
if (rotateN1) {
m_needle1->setRotation(m_needle1->rotation()+needle1Diff);
} else {
QPointF opd = QPointF(0,0);
if (horizN1) {
opd = QPointF(needle1Diff,0);
}
if (vertN1) {
opd = QPointF(0,needle1Diff);
}
m_needle1->setTransform(QTransform::fromTranslate(opd.x(),opd.y()), true);
QPointF oop = m_needle1->transformOriginPoint();
m_needle1->setTransformOriginPoint((oop.x()-opd.x()),(oop.y()-opd.y()));
}
needle1Value += needle1Diff;
} else { // value is close enough to target, value to exact target
// to cancel out any potential drift
needle1Value = needle1Target;
dialRun--;
}
if (n3enabled) {
if ((abs((needle3Value-needle3Target)*10) > 5)) {
double needle3Diff;
needle3Diff = (needle3Target - needle3Value)/5;
if (rotateN3) {
m_needle3->setRotation(m_needle3->rotation()+needle3Diff);
} else {
QPointF opd = QPointF(0,0);
if (horizN3) {
opd = QPointF(needle3Diff,0);
}
if (vertN3) {
opd = QPointF(0,needle3Diff);
}
m_needle3->setTransform(QTransform::fromTranslate(opd.x(),opd.y()), true);
QPointF oop = m_needle3->transformOriginPoint();
m_needle3->setTransformOriginPoint((oop.x()-opd.x()),(oop.y()-opd.y()));
}
needle3Value += needle3Diff;
} else {
needle3Value = needle3Target;
dialRun--;
}
} else {
dialRun--;
}
update();
// Now check: if dialRun is now zero, we should
// just stop the timer since all needles have finished moving
if (!dialRun) dialTimer.stop();
}