qt编写的窗口多开图片显示器

#include "maxpicshowform.h" #include "ui_maxpicshowform.h" #include <iostream> #pragma execution_character_set("utf-8")//让能够正常显示中文字符串 MaxPicShowForm::MaxPicShowForm(QWidget *parent) : QWidget(parent), m_bMax(true), m_bCtrlKeyPressed(false), m_bClipPic(false), m_bOriginalSize(false), m_bFixWidthSize(false), m_bFixHeightSize(false), ui(new Ui::MaxPicShowForm), m_Image(nullptr), m_myGraphicRectItem(nullptr), m_bStartSlider(false), m_nFormIndex(0) { ui->setupUi(this); m_qgraphicsScene = new myGraphicsScene;//要用QGraphicsView就必须要有QGraphicsScene搭配着用 QObject::connect(m_qgraphicsScene,&myGraphicsScene::keyPressEventSig,this,&MaxPicShowForm::getKeyPressEvent);//为了让本类接收子控件m_qgraphicsScene接收到的按键信号 mygraphicview = new myGraphicView(this); mygraphicview->setObjectName(QString::fromUtf8("mygraphicview")); mygraphicview->setGeometry(QRect(0, 0, 256, 192)); mygraphicview->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); mygraphicview->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); QSizePolicy sizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); sizePolicy.setHorizontalStretch(0); sizePolicy.setVerticalStretch(0); sizePolicy.setHeightForWidth(mygraphicview->sizePolicy().hasHeightForWidth()); mygraphicview->setSizePolicy(sizePolicy); mygraphicview->setBackgroundBrush(QBrush(QColor(240,240,240,255))); QObject::connect(mygraphicview,&myGraphicView::DragDropFileLst,this,&MaxPicShowForm::getDragDropFileLst);//为了让本类接收子控件接收到的拖拽文件事件 //mygraphicview->setStyleSheet(QString::fromUtf8("border-image: url(:/image/debug_screenbg);"));//设置背景图 //上下左右的label，为了控制界面能够拖动拉伸 labelLft = new myLabel(this); labelLft->setStyleSheet("QLabel {background-color: transparent;}");//设置背景透明 labelLft->raise(); labelLft->setScaleCursor(1); connect(labelLft,&myLabel::moveEventSig,this,&MaxPicShowForm::getLeftScaleEvent); labelRit = new myLabel(this); labelRit->setStyleSheet("QLabel {background-color: transparent;}");//设置背景透明 labelRit->raise(); labelRit->setScaleCursor(1);//设置为左右拉升光标 connect(labelRit,&myLabel::moveEventSig,this,&MaxPicShowForm::getRightScaleEvent); labelBot = new myLabel(this); labelBot->setStyleSheet("QLabel {background-color: transparent;}");//设置背景透明 labelBot->raise(); labelBot->setScaleCursor(2);//设置为上下拉升光标 connect(labelBot,&myLabel::moveEventSig,this,&MaxPicShowForm::getBottomScaleEvent); labelTop = new myLabel(this); labelTop->setStyleSheet("QLabel {background-color: transparent;}");//设置背景透明 labelTop->setScaleCursor(2);//设置为上下拉升光标 connect(labelTop,&myLabel::moveEventSig,this,&MaxPicShowForm::getTopScaleEvent); labelRB = new myLabel(this); labelRB->setStyleSheet("QLabel {background-color: transparent;}");//设置背景透明 labelRB->setScaleCursor(3);//设置为右下拉升光标 connect(labelRB,&myLabel::moveEventSig,this,&MaxPicShowForm::getRBScaleEvent); //没有图片时候的背景 labelScreenBack = new myLabel(this); labelScreenBack->setStyleSheet(QString::fromUtf8("border-image: url(:/image/screenback);")); labelScreenBack->setGeometry(0,0,this->width(),this->height()); //标题栏的label labelTital = new myLabel(this); labelTital->setText(" EditPic by Bruce"); labelTital->setGeometry(0,0,this->width(),30); labelTital->setStyleSheet(QString::fromUtf8("border-image: url(:/image/titalback);")); QPalette pa; pa.setColor(QPalette::WindowText,Qt::white); labelTital->setPalette(pa); labelTital->setWindowFlags(Qt::WindowStaysOnTopHint);//置顶显示 labelTital->raise(); connect(labelTital,&myLabel::moveEventSig,this,&MaxPicShowForm::getMoveEvent); connect(labelTital,&myLabel::mouseDoubleClickSig,this,&MaxPicShowForm::getMaxEvent); labelclose = new myLabel(this); labelclose->setStyleSheet(QString::fromUtf8("border-image: url(:/image/close);")); labelclose->raise(); connect(labelclose,&myLabel::mouseReleasedSig,this,&MaxPicShowForm::getCloseEvent); labelmax = new myLabel(this); labelmax->setStyleSheet(QString::fromUtf8("border-image: url(:/image/max);")); labelmax->raise(); connect(labelmax,&myLabel::mouseReleasedSig,this,&MaxPicShowForm::getMaxEvent); labelpopMenu = new myLabel(this); labelpopMenu->setStyleSheet(QString::fromUtf8("border-image: url(:/image/popMenu);")); labelpopMenu->raise(); connect(labelpopMenu,&myLabel::mouseReleasedSig,this,&MaxPicShowForm::getShowpopMenuEvent); labelOpenInTital = new myLabel(this); labelOpenInTital->setStyleSheet(QString::fromUtf8("border-image: url(:/image/open0);")); labelOpenInTital->raise(); connect(labelOpenInTital,&myLabel::mouseReleasedSig,this,&MaxPicShowForm::getOpenFileEvent); labelmin = new myLabel(this); labelmin->setStyleSheet(QString::fromUtf8("border-image: url(:/image/min);")); labelmin->raise(); connect(labelmin,&myLabel::mouseReleasedSig,this,&MaxPicShowForm::getMinEvent); labelTop->raise(); labelRB->raise(); //打开文件的labelOpenFile labelOpenFile = new myLabel(this); labelOpenFile->setStyleSheet(QString::fromUtf8("border-image: url(:/image/open);")); labelOpenFile->setGeometry(this->width()/2-100,this->height()/2-40,200,80); labelOpenFile->raise(); connect(labelOpenFile,&myLabel::mouseReleasedSig,this,&MaxPicShowForm::getOpenFileEvent); //左右切换按钮 labelLeftArrow = new myLabel(this); labelLeftArrow->setStyleSheet(QString::fromUtf8("border-image: url(:/image/leftArrow);")); labelLeftArrow->setGeometry(0,0,0,0); labelLeftArrow->raise(); connect(labelLeftArrow,&myLabel::mouseReleasedSig,this,&MaxPicShowForm::getLeftArrowEvent); labelRightArrow = new myLabel(this); labelRightArrow->setStyleSheet(QString::fromUtf8("border-image: url(:/image/rightArrow);")); labelRightArrow->setGeometry(0,0,0,0); labelRightArrow->raise(); connect(labelRightArrow,&myLabel::mouseReleasedSig,this,&MaxPicShowForm::getrightArrowEvent); //创建菜单对象 pMenu = new QMenu(this); QAction *pActionFitWnd = new QAction("适应窗口", pMenu); QAction *pActionFitWidth = new QAction("适应宽度", pMenu); QAction *pActionOriginSize = new QAction("原图大小", pMenu); QAction *pActionMaxWnd = new QAction("界面最大化", pMenu); //1:适应窗口 3:适应宽度 4:原始大小 5:界面最大化 pActionFitWnd->setData(1); pActionFitWidth ->setData(3); pActionOriginSize->setData(4); pActionMaxWnd->setData(5); //把QAction对象添加到菜单上 pMenu->addAction(pActionFitWnd); pMenu->addAction(pActionFitWidth); pMenu->addAction(pActionOriginSize); pMenu->addAction(pActionMaxWnd); //连接鼠标右键点击信号 connect(pActionFitWnd, SIGNAL(triggered()), this, SLOT(onMenuEvent())); connect(pActionOriginSize, SIGNAL(triggered()), this, SLOT(onMenuEvent())); connect(pActionFitWidth, SIGNAL(triggered()), SLOT(onMenuEvent())); connect(pActionMaxWnd, SIGNAL(triggered()), this, SLOT(onMenuEvent())); setAcceptDrops(true); mygraphicview->setAcceptDrops(true); } MaxPicShowForm::~MaxPicShowForm() { delete labelTital; delete labelmax; delete labelpopMenu; delete labelOpenInTital; delete labelmin; delete labelclose; delete labelLft; delete labelRit; delete labelBot; delete labelTop;