68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
#include "util/rotationSelector.h"
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#include <QGraphicsSceneMouseEvent>
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#include <QGraphicsView>
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#include <graphicsItem/graphicsBaseItem.h>
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RotationSelector::RotationSelector(QObject *parent)
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: BaseSelector(parent)
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{
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m_type = ST_rotation;
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}
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RotationSelector::~RotationSelector()
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{
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}
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void RotationSelector::mousePressEvent(QGraphicsSceneMouseEvent* event, DesignerScene* scene)
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{
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}
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void RotationSelector::mouseMoveEvent(QGraphicsSceneMouseEvent* event, DesignerScene* scene)
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{
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ms_ptMouseLast = event->scenePos();
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QList<QGraphicsItem *> items = scene->selectedItems();
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if (items.count() == 1)
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{
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AbstractShape* item = qgraphicsitem_cast<AbstractShape*>(items.first());
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if(item)
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{
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//计算夹角
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QPointF originPoint = item->mapToScene(item->boundingRect().center());
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double dLengthY = ms_ptMouseLast.y() - originPoint.y();
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double dLengthX = ms_ptMouseLast.x() - originPoint.x();
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double dAngleMouseToItem = atan2(dLengthY, dLengthX) * 180 / M_PI;
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// if(atan2(dLengthY, dLengthX) < 0)
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// dAngleMouseToItem += 360.0;
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double rotationAngle = item->rotation() + (dAngleMouseToItem - ms_dAngleMouseDownToItem);
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//让角度保持在正负180的区间，也就是上下两个半圈，这样易于象限判断
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if (rotationAngle > 180)
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rotationAngle -= 360;
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if (rotationAngle < -180)
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rotationAngle += 360;
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item->rotateOperationCopy(rotationAngle);
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//qDebug() << "rotationAngle: " << rotationAngle;
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}
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}
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}
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void RotationSelector::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, DesignerScene* scene)
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{
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QList<QGraphicsItem *> items = scene->selectedItems();
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for(int n = 0; n < items.size(); n++)
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{
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AbstractShape* item = qgraphicsitem_cast<AbstractShape*>(items.at(n));
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if(item)
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{
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item->removeOperationCopy();
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}
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}
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ms_nDragHandle = H_none;
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setCursor(scene, Qt::ArrowCursor);
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emit setWorkingSelector(ST_base);
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}
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