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修改先旋转再缩放的跳跃问题

This commit is contained in:
duanshengchao 2024-08-28 16:38:26 +08:00
parent 7ba275fe0e
commit 2cd9e236d5
4 changed files with 16 additions and 12 deletions
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4
source/designerView.cpp
View File

@ -19,8 +19,8 @@ DesignerView::~DesignerView()
void DesignerView::initialize()
{
//去掉QGraphicsView自带滚动条
//setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
//setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
//设置背景
setStyleSheet("background-image: url(:/images/checkerboard.png);\
padding: 0px; \

13
source/graphicsItem/graphicsPolygonItem.cpp
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@ -50,8 +50,10 @@ void GraphicPolygonItem::updateCoordinate() //当执行了resie和editShape函
{
prepareGeometryChange();
//更改图形绘制节点坐标，让图形中心和原点对齐
QPolygonF ptsOnScene = mapToScene(m_points); //所有操作都在scene坐标系下进行，然后在还原至item坐标系，否则会有跳转
for(int i=0; i<m_points.count(); i++)
m_points[i] += delta;
ptsOnScene[i] += delta; //一定要在scene坐标系下执行操作，不能直接m_points += delta;因为缩放以后item自身的内部坐标系也会同步缩放，单位刻度和scene下的单位刻度不再一致，所以所有相关计算一定要在同一个坐标系下完成
m_points = mapFromScene(ptsOnScene);
m_boundingRect = m_points.boundingRect();
//移动整体图形，消除节点坐标更后的绘制跳转
moveBy(-delta.x(), -delta.y());
@ -66,10 +68,6 @@ void GraphicPolygonItem::paint(QPainter* painter, const QStyleOptionGraphicsItem
painter->setPen(m_pen);
painter->setBrush(m_brush);
painter->drawPolygon(m_points);
//绘制变换原点
QPointF originPoint = transformOriginPoint();
painter->setBrush(Qt::red);
painter->drawEllipse(originPoint, 4, 4);
if (option->state & QStyle::State_Selected) //是选中状态,绘制选中框
{
@ -77,6 +75,11 @@ void GraphicPolygonItem::paint(QPainter* painter, const QStyleOptionGraphicsItem
painter->setPen(QPen(QColor(70,70,70), nPenWidth, Qt::DashLine)); //蓝色的外框
painter->setBrush(Qt::NoBrush);
painter->drawRect(m_boundingRect_selected);
//绘制变换原点
QPointF originPoint = transformOriginPoint();
painter->setBrush(Qt::red);
painter->drawEllipse(originPoint, 4, 4);
}
}

9
source/graphicsItem/graphicsRectItem.cpp
View File

@ -104,10 +104,6 @@ void GraphicsRectItem::paint(QPainter* painter, const QStyleOptionGraphicsItem*
else
painter->drawRect(m_boundingRect);
//绘制变换原点
QPointF originPoint = transformOriginPoint();
painter->setBrush(Qt::red);
painter->drawEllipse(originPoint, 4, 4);
if (option->state & QStyle::State_Selected) //是选中状态,绘制选中框
{
@ -115,6 +111,11 @@ void GraphicsRectItem::paint(QPainter* painter, const QStyleOptionGraphicsItem*
painter->setPen(QPen(QColor(70,70,70), nPenWidth, Qt::DashLine)); //蓝色的外框
painter->setBrush(Qt::NoBrush);
painter->drawRect(m_boundingRect_selected);
//绘制变换原点
QPointF originPoint = transformOriginPoint();
painter->setBrush(Qt::red);
painter->drawEllipse(originPoint, 4, 4);
}
}

2
source/mainwindow.cpp
View File

@ -66,7 +66,7 @@ void CMainWindow::initializeDockUi()
// Set central widget
m_pDrawingPanel = new DrawingPanel();
DesignerScene* designerScene = m_pDrawingPanel->getDesignerScene();
connect(designerScene, SIGNAL((QGraphicsItem*)), this, SLOT(onSignal_addItem(QGraphicsItem*)));
connect(designerScene, SIGNAL(signalAddItem(QGraphicsItem*)), this, SLOT(onSignal_addItem(QGraphicsItem*)));
CDockWidget* CentralDockWidget = new CDockWidget("CentralWidget");
CentralDockWidget->setWidget(m_pDrawingPanel);
auto* CentralDockArea = DockManager->setCentralWidget(CentralDockWidget);