File indexing completed on 2023-11-26 10:50:14

 /*
     KBlackBox - A simple game inspired by an emacs module
 
     SPDX-FileCopyrightText: 1999-2000 Robert Cimrman <cimrman3@students.zcu.cz>
     SPDX-FileCopyrightText: 2007 Nicolas Roffet <nicolas-kde@roffet.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "kbbgraphicsitemblackbox.h"
 
 
 
 #include <QGraphicsLineItem>
 #include <QGraphicsScene>
 #include <QGraphicsSceneMouseEvent>
 #include <QGraphicsView>
 
 
 #include "kbbgraphicsitem.h"
 #include "kbbthememanager.h"
 
 
 
 //
 // Constructor / Destructor
 //
 
 KBBGraphicsItemBlackBox::KBBGraphicsItemBlackBox(QGraphicsView* parent, QGraphicsScene* scene, KBBThemeManager* themeManager, bool isPreview) : QGraphicsRectItem (nullptr)
 {
     Q_UNUSED(parent); // TODO: check why not passing to QGraphicsRectItem?
     scene->addItem(this);
     m_columns = 1;
     m_rows = 1;
     m_widget = nullptr;
     m_scene = scene;
 
     m_background = new KBBGraphicsItem(KBBScalableGraphicWidget::blackbox, m_scene, themeManager);
     
     //Grid
     const KBBScalableGraphicWidget::itemType g = KBBScalableGraphicWidget::blackboxGrid;
     m_zValueLines = themeManager->zValue(g);
     m_penLines.setColor(themeManager->color(g));
     m_penLines.setStyle(themeManager->style(g));
     m_penLines.setWidthF(themeManager->width(g));
     //accept hover events unless the central widget is a preview (crashes the program)
     if (!isPreview)
         setAcceptHoverEvents(true);
 }
 
 
 
 //
 // Public
 //
 
 void KBBGraphicsItemBlackBox::setSize(const int columns, const int rows)
 {
     m_background->setTransform(QTransform::fromScale(1./m_columns, 1./m_rows), true);
 
     if ((m_columns!=columns) || (m_rows!=rows)) {
         m_columns = columns;
         m_rows = rows;
         
         const int b = KBBScalableGraphicWidget::BORDER_SIZE;
         const int r = KBBScalableGraphicWidget::RATIO;
         
         setRect(b, b, m_columns*r, m_rows*r);
     
         //remove old lines
         for (int i=0; i<m_lines.count(); i++)
             delete m_lines[i];
         m_lines.clear();
     
         // add new lines
         for (int i=0; i<m_columns+1; i++) {
             QGraphicsLineItem *item = new QGraphicsLineItem( b + i*r, b, b + i*r, b + m_rows*r, this);
             m_lines.append(item);
         }
         for (int i=0; i<m_rows+1; i++) {
             QGraphicsLineItem *item = new QGraphicsLineItem(  b, b + i*r, b + m_columns*r,  b + i*r, this);
             m_lines.append(item);
         }
         
         // set line style
         for (int i=0; i<m_lines.count(); i++) {
             m_lines[i]->setPen(m_penLines);
             m_lines[i]->setZValue(m_zValueLines);
         }
         m_background->setPos(b, b);
     }
     
     m_background->setTransform(QTransform::fromScale(m_columns/1., m_rows/1.), true);
 }
 
 
 void KBBGraphicsItemBlackBox::setKBBScalableGraphicWidget(KBBScalableGraphicWidget* w)
 {
     m_widget = w;
 }
 
 
 
 //
 // Private
 //
 
 void KBBGraphicsItemBlackBox::mousePressEvent (QGraphicsSceneMouseEvent* event)
 {
     int x = (int)(event->pos().x() - KBBScalableGraphicWidget::BORDER_SIZE)/KBBScalableGraphicWidget::RATIO;
     int y = (int)(event->pos().y() - KBBScalableGraphicWidget::BORDER_SIZE)/KBBScalableGraphicWidget::RATIO;
     
     if (m_widget!=nullptr)
         m_widget->mouseBoxClick(event->button(), x + y*m_columns);
 }
 
 void KBBGraphicsItemBlackBox::hoverLeaveEvent(QGraphicsSceneHoverEvent*)
 {
     m_widget->cursorOff();
 }
 
 void KBBGraphicsItemBlackBox::hoverMoveEvent(QGraphicsSceneHoverEvent* event)
 {
     int x = (int)(event->pos().x() - KBBScalableGraphicWidget::BORDER_SIZE)/KBBScalableGraphicWidget::RATIO;
     int y = (int)(event->pos().y() - KBBScalableGraphicWidget::BORDER_SIZE)/KBBScalableGraphicWidget::RATIO;
     Q_EMIT hoverMoved(x + y*m_columns);
 }
 
 #include "moc_kbbgraphicsitemblackbox.cpp"