valentina_old/widgets/vtablegraphicsview.cpp

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2013-08-29 12:31:50 +02:00
#include "vtablegraphicsview.h"
#include <QDebug>
#include <QGraphicsItem>
#include <QGuiApplication>
#include <QKeyEvent>
#include <QScrollBar>
VTableGraphicsView::VTableGraphicsView(QGraphicsScene* pScene, QWidget *parent) :
QGraphicsView(pScene, parent){
QGraphicsView::setResizeAnchor(QGraphicsView::AnchorUnderMouse);
connect(pScene, &QGraphicsScene::selectionChanged, this, &VTableGraphicsView::selectionChanged);
}
void VTableGraphicsView::selectionChanged(){
QList<QGraphicsItem *> listSelectedItems = scene()->selectedItems();
if( listSelectedItems.isEmpty() == true ){
qDebug() << "деталь не знайдено";
emit itemChect(true);
} else {
qDebug() << "деталь знайдено";
emit itemChect(false);
}
}
void VTableGraphicsView::rotateItems(){
rotateIt();
}
void VTableGraphicsView::MirrorItem(){
QList<QGraphicsItem *> list = scene()->selectedItems();
if(list.size()>0){
for( qint32 i = 0; i < list.count(); ++i ){
QRectF itemRectOld = list.at(i)->sceneBoundingRect();
//Get the current transform
QTransform transform(list.at(i)->transform());
qreal m11 = transform.m11(); // Horizontal scaling
qreal m12 = transform.m12(); // Vertical shearing
qreal m13 = transform.m13(); // Horizontal Projection
qreal m21 = transform.m21(); // Horizontal shearing
qreal m22 = transform.m22(); // vertical scaling
qreal m23 = transform.m23(); // Vertical Projection
qreal m31 = transform.m31(); // Horizontal Position (DX)
qreal m32 = transform.m32(); // Vertical Position (DY)
qreal m33 = transform.m33(); // Addtional Projection Factor
// Horizontal flip
m11 = -m11;
// Write back to the matrix
transform.setMatrix(m11, m12, m13, m21, m22, m23, m31, m32, m33);
// Set the items transformation
list.at(i)->setTransform(transform);
QRectF itemRectNew = list.at(i)->sceneBoundingRect();
qreal dx, dy;
dx = itemRectOld.center().x()-itemRectNew.center().x();
dy = itemRectOld.center().y()-itemRectNew.center().y();
list.at(i)->moveBy(dx, dy);
}
}
}
void VTableGraphicsView::ZoomIn(){
scale(1.1,1.1);
}
void VTableGraphicsView::ZoomOut(){
scale(1/1.1,1/1.1);
}
void VTableGraphicsView::wheelEvent(QWheelEvent *event){
if (QGuiApplication::keyboardModifiers() == Qt::ControlModifier){
// Если нажата клавиша CTRL этот код выполнится
if ((event->delta())>0){
ZoomIn();
} else if ((event->delta())<0){
ZoomOut();
}
} else {
verticalScrollBar()->setValue(verticalScrollBar()->value()-event->delta());
}
}
void VTableGraphicsView::mousePressEvent(QMouseEvent *mousePress){
if(mousePress->button() & Qt::LeftButton){
switch(QGuiApplication::keyboardModifiers()){
case Qt::ControlModifier:
QGraphicsView::setDragMode(QGraphicsView::ScrollHandDrag);
QGraphicsView::mousePressEvent(mousePress);
break;
default:
QGraphicsView::mousePressEvent(mousePress);
break;
}
}
}
void VTableGraphicsView::mouseReleaseEvent(QMouseEvent *event){
QGraphicsView::mouseReleaseEvent ( event );
QGraphicsView::setDragMode( QGraphicsView::RubberBandDrag );
}
void VTableGraphicsView::keyPressEvent(QKeyEvent *event){
switch(event->key()){
case Qt::Key_Space:
rotateIt();
break;
case Qt::Key_Left:
MoveItem(VTableGraphicsView::Left);
break;
case Qt::Key_Right:
MoveItem(VTableGraphicsView::Right);
break;
case Qt::Key_Up:
MoveItem(VTableGraphicsView::Up);
break;
case Qt::Key_Down:
MoveItem(VTableGraphicsView::Down);
break;
}
QGraphicsView::keyPressEvent ( event );
}
void VTableGraphicsView::rotateIt(){
QList<QGraphicsItem *> list = scene()->selectedItems();
if(list.size()>0){
for( qint32 i = 0; i < list.count(); ++i ){
list.at(i)->setTransformOriginPoint(list.at(i)->boundingRect().center());
list.at(i)->setRotation(list.at(i)->rotation() + 180);
}
}
}
void VTableGraphicsView::MoveItem(VTableGraphicsView::typeMove_e move){
qreal dx = 0, dy = 0;
switch(move){
case VTableGraphicsView::Left:
dx = -3;
dy = 0;
break;
case VTableGraphicsView::Right:
dx = 3;
dy = 0;
break;
case VTableGraphicsView::Up:
dx = 0;
dy = -3;
break;
case VTableGraphicsView::Down:
dx = 0;
dy = 3;
break;
}
QList<QGraphicsItem *> listSelectedItems = scene()->selectedItems();
if(listSelectedItems.size()>0){
for( qint32 i = 0; i < listSelectedItems.count(); ++i ){
listSelectedItems.at(i)->moveBy(dx, dy);
}
}
}