Qt编写视频监控画面分割界面（开源）

其实qt应用在安防领域还是蛮多的，尤其是视频监控系统，但是网上几乎没有看到qt做的最基础的视频监控画面分割的demo，今天特意花几分钟提取出来，开源放出来。欢迎大家多多点赞！源码下载：点击打开链接

运行截图：

#ifndef FRMMAIN_H
#define FRMMAIN_H
 
#include <QtGui>
#if (QT_VERSION > QT_VERSION_CHECK(5,0,0))
#include <QtWidgets>
#endif
 
namespace Ui
{
class frmMain;
}
 
class frmMain : public QWidget
{
    Q_OBJECT
 
public:
    explicit frmMain(QWidget *parent = 0);
    ~frmMain();
 
protected:
    bool eventFilter(QObject *watched, QEvent *event);
 
private:
    Ui::frmMain *ui;
 
    bool videoMax;
    int videoCount;
    QString videoType;
    QMenu *videoMenu;
    QList<QLabel *> widgets;
 
private slots:
    void initForm();
    void initMenu();
 
private slots:
    void play_video_all();
    void snapshot_video_one();
    void snapshot_video_all();
 
    void show_video_all();
    void show_video_4();
    void show_video_6();
    void show_video_8();
    void show_video_9();
    void show_video_16();
 
    void hide_video_all();
    void change_video(int index, int flag);
    void change_video_4(int index);
    void change_video_6(int index);
    void change_video_8(int index);
    void change_video_9(int index);
    void change_video_16(int index);
};
 
#endif // FRMMAIN_H

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#include "frmmain.h"
#include "ui_frmmain.h"
 
#pragma execution_character_set("utf-8")
 
frmMain::frmMain(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::frmMain)
{
    ui->setupUi(this);
    this->initForm();
    this->initMenu();
    this->show_video_all();
    QTimer::singleShot(1000, this, SLOT(play_video_all()));
}
 
frmMain::~frmMain()
{
    delete ui;
}
 
bool frmMain::eventFilter(QObject *watched, QEvent *event)
{
    if (event->type() == QEvent::MouseButtonDblClick) {
        QLabel *widget = (QLabel *) watched;
        if (!videoMax) {
            videoMax = true;
            hide_video_all();
            ui->gridLayout->addWidget(widget, 0, 0);
            widget->setVisible(true);
        } else {
            videoMax = false;
            show_video_all();
        }
    } else if (event->type() == QEvent::MouseButtonPress) {
        if (qApp->mouseButtons() == Qt::RightButton) {
            videoMenu->exec(QCursor::pos());
        }
    }
 
    return QWidget::eventFilter(watched, event);
}
 
void frmMain::initForm()
{
    //设置样式表
    QStringList qss;
    qss.append("QFrame{border:2px solid #000000;}");
    qss.append("QLabel{font:75 25px;color:#F0F0F0;border:2px solid #AAAAAA;background:#000000;}");
    qss.append("QLabel:focus{border:2px solid #00BB9E;background:#555555;}");
    ui->frame->setStyleSheet(qss.join(""));
 
    videoMax = false;
    videoCount = 16;
    videoType = "1_16";
 
    for (int i = 0; i < videoCount; i++) {
        QLabel *widget = new QLabel;
        widget->setObjectName(QString("video%1").arg(i + 1));
        widget->installEventFilter(this);
        widget->setFocusPolicy(Qt::StrongFocus);
        widget->setAlignment(Qt::AlignCenter);
 
        //二选一可以选择显示文字,也可以选择显示背景图片
        //widget->setText(QString("通道 %1").arg(i + 1));
        widget->setPixmap(QPixmap(":/bg_novideo.png"));
        widgets.append(widget);
    }
}
 
void frmMain::initMenu()
{
    videoMenu = new QMenu(this);
    videoMenu->addAction("截图当前视频", this, SLOT(snapshot_video_one()));
    videoMenu->addAction("截图所有视频", this, SLOT(snapshot_video_all()));
    videoMenu->addSeparator();
 
    QMenu *menu4 = videoMenu->addMenu("切换到4画面");
    menu4->addAction("通道1-通道4", this, SLOT(show_video_4()));
    menu4->addAction("通道5-通道8", this, SLOT(show_video_4()));
    menu4->addAction("通道9-通道12", this, SLOT(show_video_4()));
    menu4->addAction("通道13-通道16", this, SLOT(show_video_4()));
 
    QMenu *menu6 = videoMenu->addMenu("切换到6画面");
    menu6->addAction("通道1-通道6", this, SLOT(show_video_6()));
    menu6->addAction("通道6-通道11", this, SLOT(show_video_6()));
    menu6->addAction("通道11-通道16", this, SLOT(show_video_6()));
 
    QMenu *menu8 = videoMenu->addMenu("切换到8画面");
    menu8->addAction("通道1-通道8", this, SLOT(show_video_8()));
    menu8->addAction("通道9-通道16", this, SLOT(show_video_8()));
 
    QMenu *menu9 = videoMenu->addMenu("切换到9画面");
    menu9->addAction("通道1-通道9", this, SLOT(show_video_9()));
    menu9->addAction("通道8-通道16", this, SLOT(show_video_9()));
 
    videoMenu->addAction("切换到16画面", this, SLOT(show_video_16()));
}
 
void frmMain::play_video_all()
{
 
}
 
void frmMain::snapshot_video_one()
{
 
}
 
void frmMain::snapshot_video_all()
{
 
}
 
void frmMain::show_video_all()
{
    if (videoType == "1_4") {
        change_video_4(0);
    } else if (videoType == "5_8") {
        change_video_4(4);
    } else if (videoType == "9_12") {
        change_video_4(8);
    } else if (videoType == "13_16") {
        change_video_4(12);
    } else if (videoType == "1_6") {
        change_video_6(0);
    } else if (videoType == "6_11") {
        change_video_6(5);
    } else if (videoType == "11_16") {
        change_video_6(10);
    } else if (videoType == "1_8") {
        change_video_8(0);
    } else if (videoType == "9_16") {
        change_video_8(8);
    } else if (videoType == "1_9") {
        change_video_9(0);
    } else if (videoType == "8_16") {
        change_video_9(7);
    } else if (videoType == "1_16") {
        change_video_16(0);
    }
}
 
void frmMain::show_video_4()
{
    videoMax = false;
    QString videoType;
    int index = 0;
 
    QAction *action = (QAction *)sender();
    QString name = action->text();
 
    if (name == "通道1-通道4") {
        index = 0;
        videoType = "1_4";
    } else if (name == "通道5-通道8") {
        index = 4;
        videoType = "5_8";
    } else if (name == "通道9-通道12") {
        index = 8;
        videoType = "9_12";
    } else if (name == "通道13-通道16") {
        index = 12;
        videoType = "13_16";
    }
 
    if (this->videoType != videoType) {
        this->videoType = videoType;
        change_video_4(index);
    }
}
 
void frmMain::show_video_6()
{
    videoMax = false;
    QString videoType;
    int index = 0;
 
    QAction *action = (QAction *)sender();
    QString name = action->text();
 
    if (name == "通道1-通道6") {
        index = 0;
        videoType = "1_6";
    } else if (name == "通道6-通道11") {
        index = 5;
        videoType = "6_11";
    } else if (name == "通道11-通道16") {
        index = 10;
        videoType = "11_16";
    }
 
    if (this->videoType != videoType) {
        this->videoType = videoType;
        change_video_6(index);
    }
}
 
void frmMain::show_video_8()
{
    videoMax = false;
    QString videoType;
    int index = 0;
 
    QAction *action = (QAction *)sender();
    QString name = action->text();
 
    if (name == "通道1-通道8") {
        index = 0;
        videoType = "1_8";
    } else if (name == "通道9-通道16") {
        index = 8;
        videoType = "9_16";
    }
 
    if (this->videoType != videoType) {
        this->videoType = videoType;
        change_video_8(index);
    }
}
 
void frmMain::show_video_9()
{
    videoMax = false;
    QString videoType;
    int index = 0;
 
    QAction *action = (QAction *)sender();
    QString name = action->text();
 
    if (name == "通道1-通道9") {
        index = 0;
        videoType = "1_9";
    } else if (name == "通道8-通道16") {
        index = 7;
        videoType = "8_16";
    }
 
    if (this->videoType != videoType) {
        this->videoType = videoType;
        change_video_9(index);
    }
}
 
void frmMain::show_video_16()
{
    videoMax = false;
    QString videoType;
    int index = 0;
    videoType = "1_16";
 
    if (this->videoType != videoType) {
        this->videoType = videoType;
        change_video_16(index);
    }
}
 
void frmMain::hide_video_all()
{
    for (int i = 0; i < videoCount; i++) {
        ui->gridLayout->removeWidget(widgets.at(i));
        widgets.at(i)->setVisible(false);
    }
}
 
void frmMain::change_video(int index, int flag)
{
    int count = 0;
    int row = 0;
    int column = 0;
 
    for (int i = 0; i < videoCount; i++) {
        if (i >= index) {
            ui->gridLayout->addWidget(widgets.at(i), row, column);
            widgets.at(i)->setVisible(true);
 
            count++;
            column++;
            if (column == flag) {
                row++;
                column = 0;
            }
        }
 
        if (count == (flag * flag)) {
            break;
        }
    }
}
 
void frmMain::change_video_4(int index)
{
    hide_video_all();
    change_video(index, 2);
}
 
void frmMain::change_video_6(int index)
{
    hide_video_all();
    if (index == 0) {
        ui->gridLayout->addWidget(widgets.at(0), 0, 0, 2, 2);
        ui->gridLayout->addWidget(widgets.at(1), 0, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(2), 1, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(3), 2, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(4), 2, 1, 1, 1);
        ui->gridLayout->addWidget(widgets.at(5), 2, 0, 1, 1);
 
        for (int i = 0; i < 6; i++) {
            widgets.at(i)->setVisible(true);
        }
    } else if (index == 5) {
        ui->gridLayout->addWidget(widgets.at(5), 0, 0, 2, 2);
        ui->gridLayout->addWidget(widgets.at(6), 0, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(7), 1, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(8), 2, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(9), 2, 1, 1, 1);
        ui->gridLayout->addWidget(widgets.at(10), 2, 0, 1, 1);
 
        for (int i = 5; i < 11; i++) {
            widgets.at(i)->setVisible(true);
        }
    } else if (index == 10) {
        ui->gridLayout->addWidget(widgets.at(10), 0, 0, 2, 2);
        ui->gridLayout->addWidget(widgets.at(11), 0, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(12), 1, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(13), 2, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(14), 2, 1, 1, 1);
        ui->gridLayout->addWidget(widgets.at(15), 2, 0, 1, 1);
 
        for (int i = 10; i < 16; i++) {
            widgets.at(i)->setVisible(true);
        }
    }
}
 
void frmMain::change_video_8(int index)
{
    hide_video_all();
    if (index == 0) {
        ui->gridLayout->addWidget(widgets.at(0), 0, 0, 3, 3);
        ui->gridLayout->addWidget(widgets.at(1), 0, 3, 1, 1);
        ui->gridLayout->addWidget(widgets.at(2), 1, 3, 1, 1);
        ui->gridLayout->addWidget(widgets.at(3), 2, 3, 1, 1);
        ui->gridLayout->addWidget(widgets.at(4), 3, 3, 1, 1);
        ui->gridLayout->addWidget(widgets.at(5), 3, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(6), 3, 1, 1, 1);
        ui->gridLayout->addWidget(widgets.at(7), 3, 0, 1, 1);
 
        for (int i = 0; i < 8; i++) {
            widgets.at(i)->setVisible(true);
        }
    } else if (index == 8) {
        ui->gridLayout->addWidget(widgets.at(8), 0, 0, 3, 3);
        ui->gridLayout->addWidget(widgets.at(9), 0, 3, 1, 1);
        ui->gridLayout->addWidget(widgets.at(10), 1, 3, 1, 1);
        ui->gridLayout->addWidget(widgets.at(11), 2, 3, 1, 1);
        ui->gridLayout->addWidget(widgets.at(12), 3, 3, 1, 1);
        ui->gridLayout->addWidget(widgets.at(13), 3, 2, 1, 1);
        ui->gridLayout->addWidget(widgets.at(14), 3, 1, 1, 1);
        ui->gridLayout->addWidget(widgets.at(15), 3, 0, 1, 1);
 
        for (int i = 8; i < 16; i++) {
            widgets.at(i)->setVisible(true);
        }
    }
}
 
void frmMain::change_video_9(int index)
{
    hide_video_all();
    change_video(index, 3);
}
 
void frmMain::change_video_16(int index)
{
    hide_video_all();
    change_video(index, 4);
}