xypor/index.php

/*

    SPDX-FileCopyrightText: 2016 Artem Fedoskin <afedoskin3@gmail.com>

    SPDX-License-Identifier: GPL-2.0-or-later

*/


#include "guidelabelnode.h"


#include "Options.h"

#include "skymaplite.h"

#include "skyobject.h"


#include <QSGSimpleTextureNode>


GuideLabelNode::GuideLabelNode(QString name, LabelsItem::label_t type)

    : m_textTexture(new QSGSimpleTextureNode), m_name(name)

{

    appendChildNode(&debugRect);

    debugRect.setColor(QColor("green"));

    QColor color;

    switch (type)

    {

        case LabelsItem::label_t::CONSTEL_NAME_LABEL:

            color = KStarsData::Instance()->colorScheme()->colorNamed("CNameColor");

            break;

        case LabelsItem::label_t::HORIZON_LABEL:

            color = KStarsData::Instance()->colorScheme()->colorNamed("CompassColor");

            break;

        default:

            color = KStarsData::Instance()->colorScheme()->colorNamed("UserLabelColor");

    }


    m_textTexture->setTexture(SkyMapLite::Instance()->textToTexture(name, color));

    m_opacity->appendChildNode(m_textTexture);


    m_textSize     = m_textTexture->texture()->textureSize();

    QRectF oldRect = m_textTexture->rect();

    m_textTexture->setRect(QRect(oldRect.x(), oldRect.y(), m_textSize.width(), m_textSize.height()));

}


void GuideLabelNode::changePos(QPointF pos)

{

    // otherwise draw the label and return true

    //m_p.rotate( angle );                        //rotate the coordinate system

    //m_p.drawText( QPointF( -w2, h ), text );

    //m_p.restore();                              //reset coordinate system


    //return true;*/


    //QSizeF size = m_point->size();

    QMatrix4x4 m(1, 0, 0, pos.x(), 0, 1, 0, pos.y(), 0, 0, 1, 0, 0, 0, 0, 1);

    //m.translate(m_translatePos.x(), m_translatePos.y());

    m.rotate(m_angle, 0, 0, 1);


    setMatrix(m);

    markDirty(QSGNode::DirtyMatrix);

}


void GuideLabelNode::setLabelPos(QPointF pos, float angle)

{

    show();

    //We need to subtract the height of texture from final y to follow the way QPainter draws the text

    m_angle        = angle;

    m_translatePos = pos;


    //QFontMetricsF fontMetrics = SkyLabeler::Instance()->fontMetrics();

    // Create bounding rectangle by rotating the (height x width) rectangle

    qreal h = m_textSize.height(); //fontMetrics.height();

    qreal w = m_textSize.width();  //fontMetrics.width( m_name );


    qreal s = sin(angle * dms::PI / 180.0);

    qreal c = cos(angle * dms::PI / 180.0);


    qreal w2 = w / 2.0;


    // These numbers really do depend on the sign of the angle like this

    if (angle >= 0.0)

    {

        top   = pos.y() - s * w2;

        bot   = pos.y() + c * h + s * w2;

        left  = pos.x() - c * w2 - s * h;

        right = pos.x() + c * w2;

    }

    else

    {

        top   = pos.y() + s * w2;

        bot   = pos.y() + c * h - s * w2;

        left  = pos.x() - c * w2;

        right = pos.x() + c * w2 - s * h;

    }


    //We need to translate matrix with the value of pos point


    labelPos = QPointF(pos.x() - w2, pos.y() + h);


    /*debugRect.setRect(QRectF(QPointF(left,top),QPointF(right,bot)));

     debugRect.markDirty(QSGNode::DirtyGeometry);*/


    // return false if label would overlap existing label

    //    if ( ! markRegion( left, right, top, bot) )

}


void GuideLabelNode::update()

{

    changePos(labelPos);

}


ColorScheme::colorNamed
QColor colorNamed(const QString &name) const
Retrieve a color by name.
Definition colorscheme.cpp:89

GuideLabelNode::changePos
virtual void changePos(QPointF pos) override
changePos changes the position m_point
Definition guidelabelnode.cpp:40

GuideLabelNode::setLabelPos
void setLabelPos(QPointF pos, float angle)
setLabelPos sets the position of label with the given offset from SkyObject's position and makes the ...
Definition guidelabelnode.cpp:58

GuideLabelNode::GuideLabelNode
GuideLabelNode(QString name, LabelsItem::label_t type)
Constructor.
Definition guidelabelnode.cpp:14

GuideLabelNode::update
virtual void update() override
Updates coordinate of the object on SkyMapLite.
Definition guidelabelnode.cpp:102

KStarsData::colorScheme
ColorScheme * colorScheme()
Definition kstarsdata.h:174

LabelsItem::label_t
label_t
The label_t enum.
Definition labelsitem.h:62

SkyNode::show
virtual void show()
shows all child nodes (sets opacity of m_opacity to 1)
Definition skynode.cpp:27

dms::PI
static constexpr double PI
PI is a const static member; it's public so that it can be used anywhere, as long as dms....
Definition dms.h:385

QColor

QMatrix4x4

QMatrix4x4::rotate
void rotate(const QQuaternion &quaternion)

QPointF

QPointF::x
qreal x() const const

QPointF::y
qreal y() const const

QRect

QRectF

QRectF::x
qreal x() const const

QRectF::y
qreal y() const const

QSGNode::DirtyMatrix
DirtyMatrix

QSGNode::appendChildNode
void appendChildNode(QSGNode *node)

QSGNode::markDirty
void markDirty(DirtyState bits)

QSGNode::type
NodeType type() const const

QSGSimpleRectNode::setColor
void setColor(const QColor &color)

QSGSimpleTextureNode

QSGSimpleTextureNode::rect
QRectF rect() const const

QSGSimpleTextureNode::setRect
void setRect(const QRectF &r)

QSGSimpleTextureNode::setTexture
void setTexture(QSGTexture *texture)

QSGSimpleTextureNode::texture
QSGTexture * texture() const const

QSGTexture::textureSize
virtual QSize textureSize() const const=0

QSGTransformNode::setMatrix
void setMatrix(const QMatrix4x4 &matrix)

QSize::height
int height() const const

QSize::width
int width() const const

QString