13258187680

Committed 11 Feb 2025 07:50AM UTC coverage: 12.127% (+0.03%) from 12.101%

Build # 13258187680

Build Type

Pull #3751

github

Committed by

10110111

Commit Message

converter: fix a crash

Pull Request Pull Request #3751: Switch skycultures to the new format

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0.0

/src/gui/StelGuiItems.cpp

/*
 * Stellarium
 * Copyright (C) 2008 Fabien Chereau
 *
 * 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 2
 * 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., 51 Franklin Street, Suite 500, Boston, MA  02110-1335, USA.
 */

#include "StelApp.hpp"
#include "StelCore.hpp"

#include "StelUtils.hpp"
#include "SolarSystem.hpp"
#include "StelGuiItems.hpp"
#include "StelGui.hpp"
#include "StelLocaleMgr.hpp"
#include "StelLocation.hpp"
#include "StelMainView.hpp"
#include "StelMovementMgr.hpp"
#include "StelModuleMgr.hpp"
#include "StelActionMgr.hpp"
#include "StelProgressController.hpp"
#include "StelPropertyMgr.hpp"
#include "StelObserver.hpp"
#include "SkyGui.hpp"
#include "EphemWrapper.hpp"

#include <QPainter>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QGraphicsLineItem>
#include <QRectF>
#include <QDebug>
#include <QScreen>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsTextItem>
#include <QTimeLine>
#include <QMouseEvent>
#include <QPixmapCache>
#include <QProgressBar>
#include <QGraphicsWidget>
#include <QGraphicsProxyWidget>
#include <QGraphicsLinearLayout>
#include <QSettings>
#include <QGuiApplication>

namespace
{

void brightenImage(QImage &img, float factor)
{
        for (int y=0; y<img.height(); y++)
                for (int x=0; x<img.width(); x++)
                {
                        QColor col=img.pixelColor(x, y);
#if (QT_VERSION<QT_VERSION_CHECK(6,0,0))
                        qreal h, s, v, a;
#else
                        float h, s, v, a;
#endif
                        col.getHsvF(&h, &s, &v, &a);
                        v*=factor; // increase brightness.
#if (QT_VERSION<QT_VERSION_CHECK(6,0,0))
                        v=qBound(0., v, 1.);
#else
                        v=qBound(0.f, v, 1.f);
#endif
                        col.setHsvF(h, s, v, a);
                        img.setPixelColor(x, y, col);
                }
}

}

void StelButton::initCtor(const QPixmap& apixOn,
                                                  const QPixmap& apixOff,
                                                  const QPixmap& apixNoChange,
                                                  const QPixmap& apixHover,
                                                  StelAction* anAction,
                                                  StelAction* otherAction,
                                                  bool noBackground,
                                                  bool isTristate)
{
        // Allow a much-wanted brightness tweak, at least manually configured.
        const float brightenFactor=qBound(1.f, StelApp::getInstance().getSettings()->value("gui/pixmaps_brightness", 1.0).toFloat(), 1.8f);
        QImage pixOnImg=apixOn.toImage();
        QImage pixOffImg=apixOff.toImage();
        QImage pixHoverImg=apixHover.toImage();
        QImage pixNoChangeImg=apixNoChange.toImage();
        brightenImage(pixOnImg, brightenFactor);
        brightenImage(pixOffImg, brightenFactor);
        brightenImage(pixHoverImg, brightenFactor);
        brightenImage(pixNoChangeImg, brightenFactor);
        pixOn = QPixmap::fromImage(pixOnImg);
        pixOff = QPixmap::fromImage(pixOffImg);
        pixHover = QPixmap::fromImage(pixHoverImg);
        pixNoChange = QPixmap::fromImage(pixNoChangeImg);

        if(!pixmapsScale)
        {
                pixmapsScale = StelApp::getInstance().getSettings()->value("gui/pixmaps_scale", GUI_INPUT_PIXMAPS_SCALE).toDouble();
        }
        if(pixmapsScale != GUI_INPUT_PIXMAPS_SCALE)
        {
                const auto scale = pixmapsScale/GUI_INPUT_PIXMAPS_SCALE;
                pixOn = pixOn.scaled(pixOn.size()*scale, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
                pixOff = pixOff.scaled(pixOff.size()*scale, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
                if(!pixHover.isNull())
                        pixHover = pixHover.scaled(pixHover.size()*scale, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
                if(!pixNoChange.isNull())
                        pixNoChange = pixNoChange.scaled(pixNoChange.size()*scale, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
        }
        pixOn.setDevicePixelRatio(pixmapsScale);
        pixOff.setDevicePixelRatio(pixmapsScale);
        pixHover.setDevicePixelRatio(pixmapsScale);
        pixNoChange.setDevicePixelRatio(pixmapsScale);

        noBckground = noBackground;
        isTristate_ = isTristate;
        opacity = 1.;
        hoverOpacity = 0.;
        action = anAction;
        secondAction = otherAction;
        checked = false;
        flagChangeFocus = false;

        //Q_ASSERT(!pixOn.isNull());
        ///Q_ASSERT(!pixOff.isNull());

        if (isTristate_)
        {
                Q_ASSERT(!pixNoChange.isNull());
        }

        setShapeMode(QGraphicsPixmapItem::BoundingRectShape);        
        setAcceptHoverEvents(true);
        timeLine = new QTimeLine(250, this);
        timeLine->setEasingCurve(QEasingCurve(QEasingCurve::OutCurve));
        connect(timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(animValueChanged(qreal)));
        connect(&StelMainView::getInstance(), SIGNAL(updateIconsRequested()), this, SLOT(updateIcon()));  // Not sure if this is ever called?
        StelGui* gui = dynamic_cast<StelGui*>(StelApp::getInstance().getGui());
        connect(gui, SIGNAL(flagUseButtonsBackgroundChanged(bool)), this, SLOT(updateIcon()));

        if (action!=nullptr)
        {
                if (action->isCheckable())
                {
                        setChecked(action->isChecked());
                        connect(action, SIGNAL(toggled(bool)), this, SLOT(setChecked(bool)));
                        connect(this, SIGNAL(toggled(bool)), action, SLOT(setChecked(bool)));
                }
                else
                {
                        QObject::connect(this, SIGNAL(triggered()), action, SLOT(trigger()));
                }
        }
        if (secondAction!=nullptr)
        {
                        QObject::connect(this, SIGNAL(triggeredRight()), secondAction, SLOT(trigger()));
        }
        else {
                setAcceptedMouseButtons(Qt::LeftButton);
        }
}

StelButton::StelButton(QGraphicsItem* parent,
                                           const QPixmap& pixOn,
                                           const QPixmap& pixOff,
                                           const QPixmap& pixHover,
                                           StelAction *action,
                                           bool noBackground,
                                           StelAction *otherAction)
        : QGraphicsPixmapItem(pixOff, parent)
{
        initCtor(pixOn, pixOff, QPixmap(), pixHover, action, otherAction, noBackground, false);
}

StelButton::StelButton(QGraphicsItem* parent,
                                           const QPixmap& pixOn,
                                           const QPixmap& pixOff,
                                           const QPixmap& pixNoChange,
                                           const QPixmap& pixHover,
                                           const QString& actionId,
                                           bool noBackground,
                                           bool isTristate)
        : QGraphicsPixmapItem(pixOff, parent)
{
        StelAction *action = StelApp::getInstance().getStelActionManager()->findAction(actionId);
        if (!actionId.isEmpty() && !action)
                qWarning() << "Couldn't find action" << actionId;
        initCtor(pixOn, pixOff, pixNoChange, pixHover, action, nullptr, noBackground, isTristate);
}

StelButton::StelButton(QGraphicsItem* parent,
                                           const QPixmap& pixOn,
                                           const QPixmap& pixOff,
                                           const QPixmap& pixHover,
                                           const QString& actionId,
                                           bool noBackground,
                                           const QString &otherActionId)
        : QGraphicsPixmapItem(pixOff, parent)
{
        StelAction *action = StelApp::getInstance().getStelActionManager()->findAction(actionId);
        if (!actionId.isEmpty() && !action)
                qWarning() << "Couldn't find action" << actionId;
        StelAction *otherAction=nullptr;
        if (!otherActionId.isEmpty())
                otherAction = StelApp::getInstance().getStelActionManager()->findAction(otherActionId);

        initCtor(pixOn, pixOff, QPixmap(), pixHover, action, otherAction, noBackground, false);
}


int StelButton::toggleChecked(int checked)
{
        if (!isTristate_)
                checked = !!!checked;
        else
        {
                if (++checked > ButtonStateNoChange)
                        checked = ButtonStateOff;
        }
        return checked;
}

void StelButton::hoverEnterEvent(QGraphicsSceneHoverEvent*)
{
        timeLine->setDirection(QTimeLine::Forward);
        if (timeLine->state()!=QTimeLine::Running)
                timeLine->start();

        emit hoverChanged(true);
}

void StelButton::hoverLeaveEvent(QGraphicsSceneHoverEvent*)
{
        timeLine->setDirection(QTimeLine::Backward);
        if (timeLine->state()!=QTimeLine::Running)
                timeLine->start();
        emit hoverChanged(false);
}

void StelButton::mousePressEvent(QGraphicsSceneMouseEvent* event)
{
        if (event->button()==Qt::LeftButton)
        {
                QGraphicsItem::mousePressEvent(event);
                event->accept();
                setChecked(toggleChecked(checked));
                if (!triggerOnRelease)
                {
                        emit toggled(checked);
                        emit triggered();
                }
        }
        else if  (event->button()==Qt::RightButton)
        {
                QGraphicsItem::mousePressEvent(event);
                event->accept();
                //setChecked(toggleChecked(checked));
                if (!triggerOnRelease)
                {
                        //emit toggled(checked);
                        emit triggeredRight();
                }
        }
}

void StelButton::mouseReleaseEvent(QGraphicsSceneMouseEvent* event)
{
        if (event->button()==Qt::LeftButton)
        {
                if (action!=nullptr && !action->isCheckable())
                        setChecked(toggleChecked(checked));

                if (flagChangeFocus) // true if button is on bottom bar
                        StelMainView::getInstance().focusSky(); // Change the focus after clicking on button
                if (triggerOnRelease)
                {
                        emit toggled(checked);
                        emit triggered();
                }
        }
        else if  (event->button()==Qt::RightButton)
        {
                //if (flagChangeFocus) // true if button is on bottom bar
                //        StelMainView::getInstance().focusSky(); // Change the focus after clicking on button
                if (triggerOnRelease)
                {
                        //emit toggled(checked);
                        emit triggeredRight();
                }
        }
}

void StelButton::updateIcon()
{
        if (opacity < 0.)
                opacity = 0;
        QPixmap pix(pixOn.size());
        pix.setDevicePixelRatio(pixmapsScale);
        pix.fill(QColor(0,0,0,0));
        QPainter painter(&pix);
        painter.setOpacity(opacity);
        if (!pixBackground.isNull() && noBckground==false && StelApp::getInstance().getStelPropertyManager()->getStelPropertyValue("StelGui.flagUseButtonsBackground").toBool())
                painter.drawPixmap(0, 0, pixBackground);

        painter.drawPixmap(0, 0,
                (isTristate_ && checked == ButtonStateNoChange) ? (pixNoChange) :
                (checked == ButtonStateOn) ? (pixOn) :
                /* (checked == ButtonStateOff) ? */ (pixOff));

        if (hoverOpacity > 0)
        {
                painter.setOpacity(hoverOpacity * opacity);
                painter.drawPixmap(0, 0, pixHover);
        }
        setPixmap(pix);
        scaledCurrentPixmap = {};
}

void StelButton::animValueChanged(qreal value)
{
        hoverOpacity = value;
        updateIcon();
}

void StelButton::setChecked(int b)
{
        checked=b;
        updateIcon();
}

void StelButton::setBackgroundPixmap(const QPixmap &newBackground)
{
        pixBackground = newBackground;
        updateIcon();
}

QRectF StelButton::boundingRect() const
{
        return QRectF(0,0, getButtonPixmapWidth(), getButtonPixmapHeight());
}


int StelButton::getButtonPixmapWidth() const
{
        const double baseWidth = pixOn.width() / pixmapsScale * StelApp::getInstance().screenFontSizeRatio();
        return std::lround(baseWidth);
}
int StelButton::getButtonPixmapHeight() const
{
        const double baseHeight = pixOn.height() / pixmapsScale * StelApp::getInstance().screenFontSizeRatio();
        return std::lround(baseHeight);
}

void StelButton::paint(QPainter* painter, const QStyleOptionGraphicsItem*, QWidget*)
{
        /* QPixmap::scaled has much better quality than that scaling via QPainter::drawPixmap, so let's
         * have our scaled copy of the pixmap.
         * NOTE: we cache this copy for two reasons:
         * 1. Performance
         * 2. Work around a Qt problem (I think it's a bug): when rendering multiple StelButton items
         *    in sequence, only the first one gets the necessary texture parameters set, particularly
         *    GL_TEXTURE_MIN_FILTER. On deletion of QPixmap the texture is deleted, and its Id gets
         *    assigned to the next QPixmap. Apparently, the Id gets cached somewhere in Qt internals, and
         *    becomes similar to a dangling pointer, informing Qt as if the necessary setup has already
         *    been done. The result is that after the first button all others in the same panel are black
         *    rectangles.
         *    Our keeping QPixmap alive instead of deleting it on return from this function prevents this.
         */
        const double ratio = QOpenGLContext::currentContext()->screen()->devicePixelRatio();
        if(scaledCurrentPixmap.isNull() || ratio != scaledCurrentPixmap.devicePixelRatioF())
        {
                const auto size = boundingRect().size() * ratio;
                scaledCurrentPixmap = pixmap().scaled(size.toSize(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
                scaledCurrentPixmap.setDevicePixelRatio(ratio);
        }
        // Align the pixmap to pixel grid, otherwise we'll get artifacts at some scaling factors.
        const auto transform = painter->combinedTransform();
        const auto shift = QPointF(-std::fmod(transform.dx(), 1.),
                                                           -std::fmod(transform.dy(), 1.));
        painter->drawPixmap(shift/ratio, scaledCurrentPixmap);
}

LeftStelBar::LeftStelBar(QGraphicsItem* parent)
        : QGraphicsItem(parent)
        , hideTimeLine(nullptr)
{
        // Create the help label
        helpLabel = new QGraphicsSimpleTextItem("", this);
        helpLabel->setBrush(QBrush(QColor::fromRgbF(1,1,1,1)));

        setFontSizeFromApp(StelApp::getInstance().getScreenFontSize());
        connect(&StelApp::getInstance(), &StelApp::screenFontSizeChanged, this, &LeftStelBar::setFontSizeFromApp);
        connect(&StelApp::getInstance(), &StelApp::fontChanged, this, &LeftStelBar::setFont);
}

LeftStelBar::~LeftStelBar()
{
}

void LeftStelBar::addButton(StelButton* button)
{
        prepareGeometryChange();
        double posY = 0;
        if (QGraphicsItem::childItems().size()!=0)
        {
                const QRectF& r = childrenBoundingRect();
                posY += r.bottom();
        }
        button->setParentItem(this);
        button->setFocusOnSky(false);
        //button->prepareGeometryChange(); // could possibly be removed when qt 4.6 become stable
        button->setPos(0., qRound(posY + 9.5 * StelApp::getInstance().screenFontSizeRatio()));

        connect(button, SIGNAL(hoverChanged(bool)), this, SLOT(buttonHoverChanged(bool)));
}

void LeftStelBar::updateButtonPositions()
{
        double posY = 0;
        for (const auto button : childItems())
        {
                if (const auto b = dynamic_cast<StelButton*>(button))
                        b->animValueChanged(0.); // update button pixmap
                button->setPos(0., posY);
                posY += std::round(button->boundingRect().height() + 9.5 * StelApp::getInstance().screenFontSizeRatio());
        }
}

void LeftStelBar::paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*)
{
}

QRectF LeftStelBar::boundingRect() const
{
        return childrenBoundingRect();
}

QRectF LeftStelBar::boundingRectNoHelpLabel() const
{
        // Re-use original Qt code, just remove the help label
        QRectF childRect;
        for (auto* child : QGraphicsItem::childItems())
        {
                if (child==helpLabel)
                        continue;
                QPointF childPos = child->pos();
                QTransform matrix = child->transform() * QTransform().translate(childPos.x(), childPos.y());
                childRect |= matrix.mapRect(child->boundingRect() | child->childrenBoundingRect());
        }
        return childRect;
}


// Update the help label when a button is hovered
void LeftStelBar::buttonHoverChanged(bool b)
{
        StelButton* button = qobject_cast<StelButton*>(sender());
        Q_ASSERT(button);
        if (b==true)
        {
                if (button->action)
                {
                        QString tip(button->action->getText());
                        QString shortcut(button->action->getShortcut().toString(QKeySequence::NativeText));
                        if (!shortcut.isEmpty())
                        {
                                //XXX: this should be unnecessary since we used NativeText.
                                if (shortcut == "Space")
                                        shortcut = q_("Space");
                                tip += "  [" + shortcut + "]";
                        }
                        helpLabel->setText(tip);
                        helpLabel->setPos(qRound(boundingRectNoHelpLabel().width()+15.5),qRound(button->pos().y()+button->getButtonPixmapHeight()/2-8));
                }
        }
        else
        {
                helpLabel->setText("");
        }
        // Update the screen as soon as possible.
        StelMainView::getInstance().thereWasAnEvent();
}

// Set the pen for all the sub elements
void LeftStelBar::setColor(const QColor& c)
{
        helpLabel->setBrush(c);
}

//! connect from StelApp to resize fonts on the fly.
void LeftStelBar::setFontSizeFromApp(int size)
{
        prepareGeometryChange();
        // Font size was developed based on base font size 13, i.e. 12
        int screenFontSize = size-1;
        QFont font=QGuiApplication::font();
        font.setPixelSize(screenFontSize);
        helpLabel->setFont(font);
        StelGui* gui = dynamic_cast<StelGui*>(StelApp::getInstance().getGui());
        if (gui)
        {
                // to avoid crash
                SkyGui* skyGui=gui->getSkyGui();
                if (skyGui)
                {
                        skyGui->updateBarsPos();
                        updateButtonPositions();
                }
        }
}

//! connect from StelApp to resize fonts on the fly.
void LeftStelBar::setFont(const QFont &cfont)
{
        QFont font(cfont);
        font.setPixelSize(StelApp::getInstance().getScreenFontSize()-1);
        helpLabel->setFont(font);
        StelGui* gui = dynamic_cast<StelGui*>(StelApp::getInstance().getGui());
        if (gui)
        {
                // to avoid crash
                SkyGui* skyGui=gui->getSkyGui();
                if (skyGui)
                        skyGui->updateBarsPos();
        }
}


BottomStelBar::BottomStelBar(QGraphicsItem* parent,
                             const QPixmap& pixLeft,
                             const QPixmap& pixRight,
                             const QPixmap& pixMiddle,
                             const QPixmap& pixSingle) :
        QGraphicsItem(parent),
        gap(2),
        pixBackgroundLeft(pixLeft),
        pixBackgroundRight(pixRight),
        pixBackgroundMiddle(pixMiddle),
        pixBackgroundSingle(pixSingle)
{
        // The text is dummy just for testing
        datetime = new QGraphicsSimpleTextItem("2008-02-06  17:33", this);
        location = new QGraphicsSimpleTextItem("Munich, Earth, 500m", this);
        fov = new QGraphicsSimpleTextItem("FOV 43.45", this);
        fps = new QGraphicsSimpleTextItem("43.2 FPS", this);

        // Create the help label
        helpLabel = new QGraphicsSimpleTextItem("", this);
        helpLabel->setBrush(QBrush(QColor::fromRgbF(1,1,1,1)));

        setColor(QColor::fromRgbF(1,1,1,1));

        setFontSizeFromApp(StelApp::getInstance().getScreenFontSize());
        connect(&StelApp::getInstance(), &StelApp::screenFontSizeChanged, this, [=](int fontsize){setFontSizeFromApp(fontsize); setFontSizeFromApp(fontsize);}); // We must call that twice to force all geom. updates
        connect(&StelApp::getInstance(), &StelApp::fontChanged, this, &BottomStelBar::setFont);
        connect(StelApp::getInstance().getCore(), &StelCore::flagUseTopocentricCoordinatesChanged, this, [=](bool){updateText(false, true);});

        QSettings* confSettings = StelApp::getInstance().getSettings();
        setFlagShowTime(confSettings->value("gui/flag_show_datetime", true).toBool());
        setFlagShowLocation(confSettings->value("gui/flag_show_location", true).toBool());
        setFlagShowFov(confSettings->value("gui/flag_show_fov", true).toBool());
        setFlagShowFps(confSettings->value("gui/flag_show_fps", true).toBool());
        setFlagTimeJd(confSettings->value("gui/flag_time_jd", false).toBool());
        setFlagFovDms(confSettings->value("gui/flag_fov_dms", false).toBool());
        setFlagShowTz(confSettings->value("gui/flag_show_tz", true).toBool());
}

//! connect from StelApp to resize fonts on the fly.
void BottomStelBar::setFontSizeFromApp(int size)
{
        prepareGeometryChange();
        QFont font=QGuiApplication::font();
        // Font size was developed based on base font size 13, i.e. 12
        font.setPixelSize(size-1);
        datetime->setFont(font);
        location->setFont(font);
        fov->setFont(font);
        fps->setFont(font);
        helpLabel->setFont(font);
        StelGui* gui = dynamic_cast<StelGui*>(StelApp::getInstance().getGui());
        if (gui)
        {
                // to avoid crash
                SkyGui* skyGui=gui->getSkyGui();
                if (skyGui)
                {
                        skyGui->updateBarsPos();
                        updateButtonsGroups(); // Make sure bounding boxes are readjusted.
                }
        }
}

//! connect from StelApp to resize fonts on the fly.
void BottomStelBar::setFont(const QFont &cfont)
{
        QFont font(cfont);
        font.setPixelSize(StelApp::getInstance().getScreenFontSize()-1);
        datetime->setFont(font);
        location->setFont(font);
        fov->setFont(font);
        fps->setFont(font);
        StelGui* gui = dynamic_cast<StelGui*>(StelApp::getInstance().getGui());
        if (gui)
        {
                // to avoid crash
                SkyGui* skyGui=gui->getSkyGui();
                if (skyGui)
                        skyGui->updateBarsPos();
        }
}

BottomStelBar::~BottomStelBar()
{
        // Remove currently hidden buttons which are not deleted by a parent element
        for (auto& group : buttonGroups)
        {
                for (auto* b : std::as_const(group.elems))
                {
                        if (b->parentItem()==nullptr)
                        {
                                delete b;
                                b=nullptr;
                        }
                }
        }
}

void BottomStelBar::addButton(StelButton* button, const QString& groupName, const QString& beforeActionName)
{
        prepareGeometryChange();
        QList<StelButton*>& g = buttonGroups[groupName].elems;
        bool done = false;
        for (int i=0; i<g.size(); ++i)
        {
                if (g[i]->action && g[i]->action->objectName()==beforeActionName)
                {
                        g.insert(i, button);
                        done = true;
                        break;
                }
        }
        if (done == false)
                g.append(button);

        button->setVisible(true);
        button->setParentItem(this);
        button->setFocusOnSky(true);
        updateButtonsGroups();

        connect(button, SIGNAL(hoverChanged(bool)), this, SLOT(buttonHoverChanged(bool)));
        emit sizeChanged();
}

StelButton* BottomStelBar::hideButton(const QString& actionName)
{
        QString gName;
        StelButton* bToRemove = nullptr;
        for (auto iter = buttonGroups.begin(); iter != buttonGroups.end(); ++iter)
        {
                int i=0;
                for (auto* b : std::as_const(iter.value().elems))
                {
                        if (b->action && b->action->objectName()==actionName)
                        {
                                gName = iter.key();
                                bToRemove = b;
                                iter.value().elems.removeAt(i);
                                break;
                        }
                        ++i;
                }
        }
        if (bToRemove == nullptr)
                return nullptr;
        if (buttonGroups[gName].elems.size() == 0)
        {
                buttonGroups.remove(gName);
        }
        // Cannot really delete because some part of the GUI depend on the presence of some buttons
        // so just make invisible
        bToRemove->setParentItem(nullptr);
        bToRemove->setVisible(false);
        updateButtonsGroups();
        emit sizeChanged();
        return bToRemove;
}

// Set the margin at the left and right of a button group in pixels
void BottomStelBar::setGroupMargin(const QString& groupName, int left, int right)
{
        if (!buttonGroups.contains(groupName))
                return;
        buttonGroups[groupName].leftMargin = left;
        buttonGroups[groupName].rightMargin = right;
        updateButtonsGroups();
}

//! Change the background of a group
void BottomStelBar::setGroupBackground(const QString& groupName,
                                       const QPixmap& pixLeft,
                                       const QPixmap& pixRight,
                                       const QPixmap& pixMiddle,
                                       const QPixmap& pixSingle)
{
        if (!buttonGroups.contains(groupName))
                return;

        buttonGroups[groupName].pixBackgroundLeft = new QPixmap(pixLeft);
        buttonGroups[groupName].pixBackgroundRight = new QPixmap(pixRight);
        buttonGroups[groupName].pixBackgroundMiddle = new QPixmap(pixMiddle);
        buttonGroups[groupName].pixBackgroundSingle = new QPixmap(pixSingle);
        updateButtonsGroups();
}

QRectF BottomStelBar::getButtonsBoundingRect() const
{
        QRectF childRect;
        bool hasBtn = false;
        for (auto* child : QGraphicsItem::childItems())
        {
                if (qgraphicsitem_cast<StelButton*>(child)==nullptr)
                        continue;
                hasBtn = true;
                QPointF childPos = child->pos();
                //qDebug() << "childPos" << childPos;
                QTransform matrix = child->transform() * QTransform().translate(childPos.x(), childPos.y());
                childRect |= matrix.mapRect(child->boundingRect() | child->childrenBoundingRect());
        }

        if (hasBtn)
                return QRectF(0, 0, childRect.width(), childRect.height());
        else
                return QRectF();
}

void BottomStelBar::updateButtonsGroups()
{
        double x = 0;
        QFontMetrics statusFM(datetime->font());
        const double y = statusFM.lineSpacing()+gap; // Take natural font geometry into account
        for (auto& group : buttonGroups)
        {
                QList<StelButton*>& buttons = group.elems;
                if (buttons.empty())
                        continue;
                x += group.leftMargin;
                int n = 0;
                for (auto* b : buttons)
                {
                        // We check if the group has its own background if not the case
                        // We apply a default background.
                        if (n == 0)
                        {
                                if (buttons.size() == 1)
                                {
                                        if (group.pixBackgroundSingle == nullptr)
                                                b->setBackgroundPixmap(pixBackgroundSingle);
                                        else
                                                b->setBackgroundPixmap(*group.pixBackgroundSingle);
                                }
                                else
                                {
                                        if (group.pixBackgroundLeft == nullptr)
                                                b->setBackgroundPixmap(pixBackgroundLeft);
                                        else
                                                b->setBackgroundPixmap(*group.pixBackgroundLeft);
                                }
                        }
                        else if (n == buttons.size()-1)
                        {
                                if (buttons.size() != 1)
                                {
                                        if (group.pixBackgroundSingle == nullptr)
                                                b->setBackgroundPixmap(pixBackgroundSingle);
                                        else
                                                b->setBackgroundPixmap(*group.pixBackgroundSingle);
                                }
                                if (group.pixBackgroundRight == nullptr)
                                        b->setBackgroundPixmap(pixBackgroundRight);
                                else
                                        b->setBackgroundPixmap(*group.pixBackgroundRight);
                        }
                        else
                        {
                                if (group.pixBackgroundMiddle == nullptr)
                                        b->setBackgroundPixmap(pixBackgroundMiddle);
                                else
                                        b->setBackgroundPixmap(*group.pixBackgroundMiddle);
                        }
                        // Update the button pixmap
                        b->animValueChanged(0.);
                        b->setPos(x, y);
                        x += b->getButtonPixmapWidth();
                        ++n;
                }
                x+=group.rightMargin;
        }
        updateText(true);
}

// create text elements and tooltips in bottom toolbar.
// Make sure to avoid any change if not necessary to avoid triggering useless redraw
// This is also called when button groups have been updated.
void BottomStelBar::updateText(bool updatePos, bool updateTopocentric)
{
        static StelCore* core = StelApp::getInstance().getCore();
        const double jd = core->getJD();
        const double utcOffsetHrs=core->getUTCOffset(jd);
        const double deltaT = core->getDeltaT();
        const double sigma = StelUtils::getDeltaTStandardError(jd);
        QString validRangeMarker = "";
        core->getCurrentDeltaTAlgorithmValidRangeDescription(jd, &validRangeMarker);

        static StelLocaleMgr& locmgr = StelApp::getInstance().getLocaleMgr();
        QString newDateInfo = " ";
        if (getFlagShowTime())
        {
                if (getFlagShowTz())
                {
                        QString tz = locmgr.getPrintableTimeZoneLocal(jd, utcOffsetHrs);
                        newDateInfo = QString("%1 %2 %3").arg(locmgr.getPrintableDateLocal(jd, utcOffsetHrs), locmgr.getPrintableTimeLocal(jd, utcOffsetHrs), tz);
                }
                else
                        newDateInfo = QString("%1 %2").arg(locmgr.getPrintableDateLocal(jd, utcOffsetHrs), locmgr.getPrintableTimeLocal(jd, utcOffsetHrs));
        }
        QString newDateAppx = QString("JD %1").arg(jd, 0, 'f', 5); // up to seconds
        if (getFlagTimeJd())
        {
                newDateAppx = newDateInfo;
                newDateInfo = QString("JD %1").arg(jd, 0, 'f', 5); // up to seconds
        }

        QString planetName = core->getCurrentLocation().planetName;
        if (planetName!=planetNameEnglish)
        {
                planetNameEnglish=planetName;
                if (planetName=="SpaceShip") // Avoid crash
                {
                        const StelTranslator& trans = StelApp::getInstance().getLocaleMgr().getSkyTranslator();
                        planetNameI18n = trans.qtranslate(planetName, "special celestial body"); // added context
                }
                else
                        planetNameI18n = GETSTELMODULE(SolarSystem)->searchByEnglishName(planetName)->getNameI18n();
        }
        QString tzName = core->getCurrentTimeZone();
        if (tzName.contains("system_default") || (tzName.isEmpty() && planetName=="Earth"))
                tzName = q_("System default");

        QString currTZ = QString("%1: %2").arg(q_("Time zone"), tzName);

        if (tzName.contains("LMST") || tzName.contains("auto") || (planetName=="Earth" && jd<=StelCore::TZ_ERA_BEGINNING && !core->getUseCustomTimeZone()) )
                currTZ = q_("Local Mean Solar Time");

        if (tzName.contains("LTST"))
                currTZ = q_("Local True Solar Time");

        // TRANSLATORS: unit of measurement: minutes per second
        QString timeRateMU = qc_("min/s", "unit of measurement");
        double timeRate = qAbs(core->getTimeRate()/StelCore::JD_SECOND);
        double timeSpeed = timeRate/60.;

        if (timeSpeed>=60.)
        {
                timeSpeed /= 60.;
                // TRANSLATORS: unit of measurement: hours per second
                timeRateMU = qc_("hr/s", "unit of measurement");
        }
        if (timeSpeed>=24.)
        {
                timeSpeed /= 24.;
                // TRANSLATORS: unit of measurement: days per second
                timeRateMU = qc_("d/s", "unit of measurement");
        }
        if (timeSpeed>=365.25)
        {
                timeSpeed /= 365.25;
                // TRANSLATORS: unit of measurement: years per second
                timeRateMU = qc_("yr/s", "unit of measurement");
        }
        QString timeRateInfo = QString("%1: x%2").arg(q_("Simulation speed"), QString::number(timeRate, 'f', 0));
        if (timeRate>60.)
                timeRateInfo = QString("%1: x%2 (%3 %4)").arg(q_("Simulation speed"), QString::number(timeRate, 'f', 0), QString::number(timeSpeed, 'f', 2), timeRateMU);

        if (datetime->text()!=newDateInfo)
        {
                updatePos = true;
                datetime->setText(newDateInfo);
        }

        if (core->getCurrentDeltaTAlgorithm()!=StelCore::WithoutCorrection)
        {
                QString sigmaInfo("");
                if (sigma>0)
                        sigmaInfo = QString("; %1(%2T) = %3s").arg(QChar(0x03c3)).arg(QChar(0x0394)).arg(sigma, 3, 'f', 1);

                QString deltaTInfo;
                if (qAbs(deltaT)>60.)
                        deltaTInfo = QString("%1 (%2s)%3").arg(StelUtils::hoursToHmsStr(deltaT/3600.)).arg(deltaT, 5, 'f', 2).arg(validRangeMarker);
                else
                        deltaTInfo = QString("%1s%2").arg(deltaT, 3, 'f', 3).arg(validRangeMarker);

                // the corrective ndot to be displayed could be set according to the currently used DeltaT algorithm.
                //float ndot=core->getDeltaTnDot();
                // or just to the used ephemeris. This has to be read as "Selected DeltaT formula used, but with the ephemeris's nDot applied it corrects DeltaT to..."
                const double ndot=( (EphemWrapper::use_de430(jd) || EphemWrapper::use_de431(jd) || EphemWrapper::use_de440(jd) || EphemWrapper::use_de441(jd)) ? -25.8 : -23.8946 );

                datetime->setToolTip(QString("<p style='white-space:pre'>%1T = %2 [n%8 @ %3\"/cy%4%5]<br>%6<br>%7<br>%9</p>").arg(QChar(0x0394), deltaTInfo, QString::number(ndot, 'f', 4), QChar(0x00B2), sigmaInfo, newDateAppx, currTZ, QChar(0x2032), timeRateInfo));
        }
        else
                datetime->setToolTip(QString("<p style='white-space:pre'>%1<br>%2<br>%3</p>").arg(newDateAppx, currTZ, timeRateInfo));

        // build location tooltip
        QString newLocation("");
        if (getFlagShowLocation())
        {
                const StelLocation* loc = &core->getCurrentLocation();
                if (core->getCurrentPlanet()->getPlanetType()==Planet::isObserver)
                        newLocation = planetNameI18n;
                else if(loc->name.isEmpty())
                        newLocation = planetNameI18n +", "+StelUtils::decDegToDmsStr(loc->getLatitude())+", "+StelUtils::decDegToDmsStr(loc->getLongitude());
                else if (loc->name.contains("->")) // a spaceship
                        newLocation = QString("%1 [%2 %3]").arg(planetNameI18n, q_("flight"), loc->name);
                else
                        //TRANSLATORS: Unit of measure for distance - meter
                        newLocation = planetNameI18n +", "+q_(loc->name) + ", "+ QString("%1 %2").arg(loc->altitude).arg(qc_("m", "distance"));
        }
        // When topocentric switch is toggled, this must be redrawn!
        if (location->text()!=newLocation || updateTopocentric)
        {
                updatePos = true;
                location->setText(newLocation);
                double lat = static_cast<double>(core->getCurrentLocation().getLatitude());
                double lon = static_cast<double>(core->getCurrentLocation().getLongitude());
                QString latStr, lonStr, pm;
                if (lat >= 0)
                        pm = "N";
                else
                {
                        pm = "S";
                        lat *= -1;
                }
                latStr = QString("%1%2%3").arg(pm).arg(lat).arg(QChar(0x00B0));
                if (lon >= 0)
                        pm = "E";
                else
                {
                        pm = "W";
                        lon *= -1;
                }
                lonStr = QString("%1%2%3").arg(pm).arg(lon).arg(QChar(0x00B0));
                QString rho, weather;
                if (core->getUseTopocentricCoordinates())
                        rho = QString("%1 %2 %3").arg(q_("planetocentric distance")).arg(core->getCurrentObserver()->getDistanceFromCenter() * AU).arg(qc_("km", "distance"));
                else
                        rho = q_("planetocentric observer");

                if (newLocation.contains("->")) // a spaceship
                        location->setToolTip(QString());
                else
                {
                        if (core->getCurrentPlanet()->hasAtmosphere())
                        {
                                const StelPropertyMgr* propMgr=StelApp::getInstance().getStelPropertyManager();
                                weather = QString("%1: %2 %3; %4: %5 °C").arg(q_("Atmospheric pressure"), QString::number(propMgr->getStelPropertyValue("StelSkyDrawer.atmospherePressure").toDouble(), 'f', 2), qc_("mbar", "pressure unit"), q_("temperature"), QString::number(propMgr->getStelPropertyValue("StelSkyDrawer.atmosphereTemperature").toDouble(), 'f', 1));
                                location->setToolTip(QString("<p style='white-space:pre'>%1 %2; %3<br>%4</p>").arg(latStr, lonStr, rho, weather));
                        }
                        else if (core->getCurrentPlanet()->getPlanetType()==Planet::isObserver)
                                newLocation = planetNameI18n;
                        else
                                location->setToolTip(QString("%1 %2; %3").arg(latStr, lonStr, rho));
                }
        }

        // build fov tooltip
        // TRANSLATORS: Field of view. Please use abbreviation.
        QString fovdms = StelUtils::decDegToDmsStr(core->getMovementMgr()->getCurrentFov());
        QString fovText;
        if (getFlagFovDms())
                fovText=QString("%1 %2").arg(qc_("FOV", "abbreviation"), fovdms);
        else
                fovText=QString("%1 %2%3").arg(qc_("FOV", "abbreviation"), QString::number(core->getMovementMgr()->getCurrentFov(), 'g', 3), QChar(0x00B0));

        if (fov->text()!=fovText)
        {
                updatePos = true;
                if (getFlagShowFov())
                {
                        fov->setText(fovText);
                        fov->setToolTip(QString("%1: %2").arg(q_("Field of view"), fovdms));
                }
                else
                {
                        fov->setText("");
                        fov->setToolTip("");
                }
        }

        // build fps tooltip
        // TRANSLATORS: Frames per second. Please use abbreviation.
        QString fpsText = QString("%1 %2").arg(QString::number(StelApp::getInstance().getFps(), 'g', 4), qc_("FPS", "abbreviation"));
        if (fps->text()!=fpsText)
        {
                updatePos = true;
                if (getFlagShowFps())
                {
                        fps->setText(fpsText);
                        fps->setToolTip(q_("Frames per second"));
                }
                else
                {
                        fps->setText("");
                        fps->setToolTip("");
                }
        }

        if (updatePos)
        {
                // The location string starts at left, dateTime ends at right. FoV and FPS come ahead of dateTime.
                // In case the strings are wider than available button space, they are now pushed to the right.
                QFontMetrics fontMetrics(location->font());
                int fpsShift     = qMax(fontMetrics.boundingRect(fps->text()+"MMM").width(), fontMetrics.boundingRect(qc_("FPS", "abbreviation")+"MM.M MMM").width());
                int fovShift     = fontMetrics.boundingRect(fov->text()+"MMM").width() + fpsShift;
                int locationWidth= fontMetrics.boundingRect(location->text() + "MMM").width();
                location->setPos(0, 0);

                QRectF rectCh = getButtonsBoundingRect();
                int dateTimePos = static_cast<int>(rectCh.right()-datetime->boundingRect().width())-5;
                if ((dateTimePos%2) == 1) dateTimePos--; // make even pixel

                const int rightPush=qMax(0, locationWidth-(dateTimePos-fovShift));
                datetime->setPos(dateTimePos+rightPush, 0);
                fov->setPos(datetime->x()-fovShift, 0);
                fps->setPos(datetime->x()-fpsShift, 0);
                //emit sizeChanged(); // This causes max fps!
        }
}

void BottomStelBar::paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*)
{
        updateText();
}

QRectF BottomStelBar::boundingRect() const
{
        if (QGraphicsItem::childItems().size()==0)
                return QRectF();
        const QRectF& r = childrenBoundingRect(); // BBX of status text (Location/FoV/FPS/Time) and buttons
        return QRectF(0, 0, r.width(), r.height());
}

QRectF BottomStelBar::boundingRectNoHelpLabel() const
{
        // Re-use original Qt code, just remove the help label
        QRectF childRect;
        for (const auto* child : QGraphicsItem::childItems())
        {
                if (child==helpLabel)
                        continue;
                QPointF childPos = child->pos();
                QTransform matrix = child->transform() * QTransform().translate(childPos.x(), childPos.y());
                childRect |= matrix.mapRect(child->boundingRect() | child->childrenBoundingRect());
        }
        return childRect;
}

// Set the brush for all the sub elements
void BottomStelBar::setColor(const QColor& c)
{
        datetime->setBrush(c);
        location->setBrush(c);
        fov->setBrush(c);
        fps->setBrush(c);
        helpLabel->setBrush(c);
}

// Update the help label when a button is hovered
void BottomStelBar::buttonHoverChanged(bool b)
{
        StelButton* button = qobject_cast<StelButton*>(sender());
        Q_ASSERT(button);
        if (b==true)
        {
                StelAction* action = button->action;
                if (action)
                {
                        QString tip(action->getText());
                        QString shortcut(action->getShortcut().toString(QKeySequence::NativeText));
                        if (!shortcut.isEmpty())
                        {
                                //XXX: this should be unnecessary since we used NativeText.
                                if (shortcut == "Space")
                                        shortcut = q_("Space");
                                tip += "  [" + shortcut + "]";
                        }
                        helpLabel->setText(tip);
                        //helpLabel->setPos(button->pos().x()+button->pixmap().size().width()/2,-27);
                        helpLabel->setPos(20,-10-location->font().pixelSize()); // Set help text XY position. Y adjusted for font size!
                }
        }
        else
        {
                helpLabel->setText("");
        }
        // Update the screen as soon as possible.
        StelMainView::getInstance().thereWasAnEvent();
}

void BottomStelBar::enableTopoCentricUpdate(bool enable)
{
        bool ok;
        if (enable)
                ok=connect(StelApp::getInstance().getCore(), &StelCore::flagUseTopocentricCoordinatesChanged, this, [=](bool){updateText(false, true);});
        else
                ok=disconnect(StelApp::getInstance().getCore(), &StelCore::flagUseTopocentricCoordinatesChanged, nullptr, nullptr); //, this, [=](bool b, bool update){if (update) updateText(false, true);});

        if (!ok)
                qCritical() << "BottomStelBar: enableTopoCentricUpdate failed.";
}

StelBarsFrame::StelBarsFrame(QGraphicsItem* parent) : QGraphicsPathItem(parent), roundSize(6)
{
        setBrush(QBrush(QColor::fromRgbF(0.22, 0.22, 0.23, 0.2))); // background color
        QPen aPen(QColor::fromRgbF(0.7,0.7,0.7,0.5));              // perimeter line color
        // aPen.setWidthF(1.); // 1=default!
        setPen(aPen);
}

void StelBarsFrame::updatePath(BottomStelBar* bottom, LeftStelBar* left)
{
        const QPointF l = left->pos() + QPointF(-0.5,0.5);   // pos() is the top-left point in the parent's coordinate system.
        const QRectF lB = left->boundingRectNoHelpLabel();
        const QPointF b = bottom->pos() + QPointF(-0.5,0.5);
        const QRectF bB = bottom->boundingRectNoHelpLabel();

        QPainterPath path(QPointF(l.x()-roundSize, l.y()-roundSize));                                 // top left point
        //path.lineTo(l.x()+lB.width()-roundSize,l.y()-roundSize);                                    // top edge. Not needed because the arc connects anyhow!
        path.arcTo(l.x()+lB.width()-roundSize, l.y()-roundSize, 2.*roundSize, 2.*roundSize, 90, -90); // top-right curve of left bar
        path.lineTo(l.x()+lB.width()+roundSize, b.y()-roundSize);                                     // vertical to inside sharp edge
        //path.lineTo(b.x()+bB.width(),b.y()-roundSize);                                              // Top edge of bottom bar. Not needed because the arc connects anyhow!
        path.arcTo(b.x()+bB.width()-roundSize, b.y()-roundSize, 2.*roundSize, 2.*roundSize, 90, -90); // top right curved edge of bottom bar (just connects.)
        path.lineTo(b.x()+bB.width()+roundSize, b.y()+bB.height()+roundSize);
        path.lineTo(l.x()-roundSize, b.y()+bB.height()+roundSize);                                    // bottom line (outside screen area!)
        path.closeSubpath();                                                                          // vertical line up left outside screen
        setPath(path);
}

void StelBarsFrame::setBackgroundOpacity(double opacity)
{
        setBrush(QBrush(QColor::fromRgbF(0.22, 0.22, 0.23, opacity))); // repeated background color and new opacity
}

StelProgressBarMgr::StelProgressBarMgr(QGraphicsItem* parent):
        QGraphicsWidget(parent)
{
        setLayout(new QGraphicsLinearLayout(Qt::Vertical));
}
/*
QRectF StelProgressBarMgr::boundingRect() const
{
        if (QGraphicsItem::children().size()==0)
                return QRectF();
        const QRectF& r = childrenBoundingRect();
        return QRectF(0, 0, r.width()-1, r.height()-1);
}*/

void StelProgressBarMgr::addProgressBar(const StelProgressController* p)
{
        StelGui* gui = dynamic_cast<StelGui*>(StelApp::getInstance().getGui());
        QProgressBar* pb = new QProgressBar();
        pb->setFixedHeight(25);
        pb->setFixedWidth(200);
        pb->setTextVisible(true);
        pb->setValue(p->getValue());
        pb->setMinimum(p->getMin());
        pb->setMaximum(p->getMax());
        pb->setFormat(p->getFormat());
        if (gui!=nullptr)
                pb->setStyleSheet(gui->getStelStyle().qtStyleSheet);
        QGraphicsProxyWidget* pbProxy = new QGraphicsProxyWidget();
        pbProxy->setWidget(pb);
        pbProxy->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
        pbProxy->setZValue(150);        
        static_cast<QGraphicsLinearLayout*>(layout())->addItem(pbProxy);
        allBars.insert(p, pb);
        pb->setVisible(true);
        
        connect(p, SIGNAL(changed()), this, SLOT(oneBarChanged()));
}

void StelProgressBarMgr::removeProgressBar(const StelProgressController *p)
{
        QProgressBar* pb = allBars[p];
        pb->deleteLater();
        allBars.remove(p);
}

void StelProgressBarMgr::oneBarChanged()
{
        const StelProgressController *p = static_cast<StelProgressController*>(QObject::sender());
        QProgressBar* pb = allBars[p];
        pb->setValue(p->getValue());
        pb->setMinimum(p->getMin());
        pb->setMaximum(p->getMax());
        pb->setFormat(p->getFormat());
}

CornerButtons::CornerButtons(QGraphicsItem* parent) :
        QGraphicsItem(parent),
        lastOpacity(10)
{
}

void CornerButtons::paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*)
{
        // Do nothing. Just paint the child widgets
}

QRectF CornerButtons::boundingRect() const
{
        if (QGraphicsItem::childItems().size()==0)
                return QRectF();
        const QRectF& r = childrenBoundingRect();
        return QRectF(0, 0, r.width(), r.height());
}

void CornerButtons::setOpacity(double opacity)
{
        if (opacity<=0. && lastOpacity<=0.)
                return;
        lastOpacity = opacity;
        if (QGraphicsItem::childItems().size()==0)
                return;
        for (auto* child : QGraphicsItem::childItems())
        {
                StelButton* sb = qgraphicsitem_cast<StelButton*>(child);
                Q_ASSERT(sb!=nullptr);
                sb->setOpacity(opacity);
        }
}

Stellarium / stellarium / 13258187680

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