File indexing completed on 2024-04-28 03:44:25

 /*
     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);
 }