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Qt开源作品15-视频监控画面

Qt开源作品15-视频监控画面

作者: feiyangqingyun | 来源:发表于2020-05-20 13:31 被阅读0次

    一、前言

    视频监控系统在整个安防领域,已经做到了烂大街的程序,全国起码几百家公司做过类似的系统,当然这一方面的需求量也是非常旺盛的,各种定制化的需求越来越多,尤其是这几年借着人脸识别的东风,发展更加迅猛,人脸识别相关的技术和应用这几年处于风口浪尖,衍生了特别多的应用产品,各种人脸识别的产品遍地开花,刷脸门禁,车站机场人脸识别,刷脸取票等,但是其实大部分内行人士可能都比较绝望,外行感觉像看科幻片一样,老板们各种打鸡血,今天几个亿明天几个亿。

    纵观Qt的应用场景领域,在国内,基本上在安防、航天船舶、教育、工业控制领域,占有比较大的比例,其实个人非常喜爱Qt的,从没见过如此完美的API封装,包括命名,最牛逼的就是跨平台特性,可以说完爆.NET的跨平台,甚至连那种几十兆的嵌入式linux版本都能运行,这就使得成本大大降低,提高了产品的丰富性。自从用了Qt以后,就再也不想用VC/VB/C#等。

    视频监控画面在任何视频监控系统中是少不了的一个功能,基本上是需要1画面、4画面、6画面、8画面、9画面、16画面等,Qt提供的表格布局非常胜任这个工作,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!现在还增加了25画面、36画面,里边的函数封装的很好,稍微加几行可以直接增加49画面等其他的。

    二、代码思路

    void VideoPanel::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) {
                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 VideoPanel::change_video_4(int index)
    {
        hide_video_all();
        change_video(index, 2);
    }
    
    void VideoPanel::change_video_6(int index)
    {
        hide_video_all();
        if (index == 0) {
            gridLayout->addWidget(widgets.at(0), 0, 0, 2, 2);
            gridLayout->addWidget(widgets.at(1), 0, 2, 1, 1);
            gridLayout->addWidget(widgets.at(2), 1, 2, 1, 1);
            gridLayout->addWidget(widgets.at(3), 2, 2, 1, 1);
            gridLayout->addWidget(widgets.at(4), 2, 1, 1, 1);
            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) {
            gridLayout->addWidget(widgets.at(5), 0, 0, 2, 2);
            gridLayout->addWidget(widgets.at(6), 0, 2, 1, 1);
            gridLayout->addWidget(widgets.at(7), 1, 2, 1, 1);
            gridLayout->addWidget(widgets.at(8), 2, 2, 1, 1);
            gridLayout->addWidget(widgets.at(9), 2, 1, 1, 1);
            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) {
            gridLayout->addWidget(widgets.at(10), 0, 0, 2, 2);
            gridLayout->addWidget(widgets.at(11), 0, 2, 1, 1);
            gridLayout->addWidget(widgets.at(12), 1, 2, 1, 1);
            gridLayout->addWidget(widgets.at(13), 2, 2, 1, 1);
            gridLayout->addWidget(widgets.at(14), 2, 1, 1, 1);
            gridLayout->addWidget(widgets.at(15), 2, 0, 1, 1);
    
            for (int i = 10; i < 16; i++) {
                widgets.at(i)->setVisible(true);
            }
        }
    }
    
    void VideoPanel::change_video_8(int index)
    {
        hide_video_all();
        if (index == 0) {
            gridLayout->addWidget(widgets.at(0), 0, 0, 3, 3);
            gridLayout->addWidget(widgets.at(1), 0, 3, 1, 1);
            gridLayout->addWidget(widgets.at(2), 1, 3, 1, 1);
            gridLayout->addWidget(widgets.at(3), 2, 3, 1, 1);
            gridLayout->addWidget(widgets.at(4), 3, 3, 1, 1);
            gridLayout->addWidget(widgets.at(5), 3, 2, 1, 1);
            gridLayout->addWidget(widgets.at(6), 3, 1, 1, 1);
            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) {
            gridLayout->addWidget(widgets.at(8), 0, 0, 3, 3);
            gridLayout->addWidget(widgets.at(9), 0, 3, 1, 1);
            gridLayout->addWidget(widgets.at(10), 1, 3, 1, 1);
            gridLayout->addWidget(widgets.at(11), 2, 3, 1, 1);
            gridLayout->addWidget(widgets.at(12), 3, 3, 1, 1);
            gridLayout->addWidget(widgets.at(13), 3, 2, 1, 1);
            gridLayout->addWidget(widgets.at(14), 3, 1, 1, 1);
            gridLayout->addWidget(widgets.at(15), 3, 0, 1, 1);
    
            for (int i = 8; i < 16; i++) {
                widgets.at(i)->setVisible(true);
            }
        }
    }
    
    void VideoPanel::change_video_9(int index)
    {
        hide_video_all();
        change_video(index, 3);
    }
    
    void VideoPanel::change_video_13(int index)
    {
        hide_video_all();
        if (index == 0) {
            gridLayout->addWidget(widgets.at(0), 0, 0, 1, 1);
            gridLayout->addWidget(widgets.at(1), 0, 1, 1, 1);
            gridLayout->addWidget(widgets.at(2), 0, 2, 1, 1);
            gridLayout->addWidget(widgets.at(3), 0, 3, 1, 1);
            gridLayout->addWidget(widgets.at(4), 1, 0, 1, 1);
            gridLayout->addWidget(widgets.at(5), 2, 0, 1, 1);
            gridLayout->addWidget(widgets.at(6), 1, 1, 2, 2);
            gridLayout->addWidget(widgets.at(7), 1, 3, 1, 1);
            gridLayout->addWidget(widgets.at(8), 2, 3, 1, 1);
            gridLayout->addWidget(widgets.at(9), 3, 0, 1, 1);
            gridLayout->addWidget(widgets.at(10), 3, 1, 1, 1);
            gridLayout->addWidget(widgets.at(11), 3, 2, 1, 1);
            gridLayout->addWidget(widgets.at(12), 3, 3, 1, 1);
    
            for (int i = 0; i < 13; i++) {
                widgets.at(i)->setVisible(true);
            }
        } else if (index == 3) {
            gridLayout->addWidget(widgets.at(3), 0, 0, 1, 1);
            gridLayout->addWidget(widgets.at(4), 0, 1, 1, 1);
            gridLayout->addWidget(widgets.at(5), 0, 2, 1, 1);
            gridLayout->addWidget(widgets.at(6), 0, 3, 1, 1);
            gridLayout->addWidget(widgets.at(7), 1, 0, 1, 1);
            gridLayout->addWidget(widgets.at(8), 2, 0, 1, 1);
            gridLayout->addWidget(widgets.at(9), 1, 1, 2, 2);
            gridLayout->addWidget(widgets.at(10), 1, 3, 1, 1);
            gridLayout->addWidget(widgets.at(11), 2, 3, 1, 1);
            gridLayout->addWidget(widgets.at(12), 3, 0, 1, 1);
            gridLayout->addWidget(widgets.at(13), 3, 1, 1, 1);
            gridLayout->addWidget(widgets.at(14), 3, 2, 1, 1);
            gridLayout->addWidget(widgets.at(15), 3, 3, 1, 1);
    
            for (int i = 3; i < 16; i++) {
                widgets.at(i)->setVisible(true);
            }
        }
    }
    
    void VideoPanel::change_video_16(int index)
    {
        hide_video_all();
        change_video(index, 4);
    }
    
    void VideoPanel::change_video_25(int index)
    {
        hide_video_all();
        change_video(index, 5);
    }
    
    void VideoPanel::change_video_36(int index)
    {
        hide_video_all();
        change_video(index, 6);
    }
    
    void VideoPanel::change_video_64(int index)
    {
        hide_video_all();
        change_video(index, 8);
    }
    

    三、效果图

    在这里插入图片描述

    四、开源主页

    • 以上作品完整源码下载都在开源主页,会持续不断更新作品数量和质量,欢迎各位关注。
    • 本开源项目已经成功升级到V2.0版本,分门别类,图文并茂,保你爽到爆。
    • Qt开源武林秘籍开发经验,看完学完,20K起薪,没有找我!
    1. 国内站点:https://gitee.com/feiyangqingyun/QWidgetDemo
    2. 国际站点:https://github.com/feiyangqingyun/QWidgetDemo
    3. 开源秘籍:https://gitee.com/feiyangqingyun/qtkaifajingyan
    4. 个人主页:https://qtchina.blog.csdn.net/
    5. 知乎主页:https://www.zhihu.com/people/feiyangqingyun/

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