使用WPF制作视频监控多画面切换
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2022-07-09 20:32:14
前言 曾有做过一个产品，有一个功能是视频监控模块，视频监控首先想到的是视频多画面切换功能，由于前端是用WPF开发的，所以当时就做了一个多画面切换组件，效果如下： 功能设计前提： 由于要使用海康大华天地伟业等视频厂家的视频，对接的方式是通过各个厂家提供的SDK（官网下载），由于播放视频的时候需要传递控 ......
前言
曾有做过一个产品，有一个功能是视频监控模块，视频监控首先想到的是视频多画面切换功能，由于前端是用wpf开发的，所以当时就做了一个多画面切换组件，效果如下：
功能设计前提：
由于要使用海康大华天地伟业等视频厂家的视频，对接的方式是通过各个厂家提供的sdk（官网下载），由于播放视频的时候需要传递控件的句柄（handle），所以要在wpf中使用system.windows.forms下的控件panel
具体实现：
1、 实现多画面类multiview，主要提供页面初始化、设置当前画面等功能
public static class multiview
{
public static int currentmodel = 0;
public static dictionary<int, cellpanel> dictpanel = null;
private static grid originalgrid = null;
private static grid tempgrid1 = new grid();
private static grid tempgrid2 = new grid();
private static int maxcellnums = 0;
/// <summary>
/// 初始化页面
/// </summary>
/// <param name="grid">主体</param>
/// <param name="cellnums">最大画面数</param>
public static void initgrid(grid grid, int cellnums)
{
multiview.originalgrid = grid;
multiview.maxcellnums = cellnums;
multiview.dictpanel = new dictionary<int, cellpanel>();
for (int index = 1; index <= multiview.maxcellnums; index++)
{
cellpanel cellpanel = new cellpanel();
cellpanel.index = index;
multiview.dictpanel.add(index, cellpanel);
}
}
/// <summary>
/// 设置当前画面数
/// </summary>
/// <param name="model"></param>
public static void setcurrentmodel(int model)
{
switch (model)
{
case 1:
multiview.setmodelbycolumnandrow(1, 1);
break;
case 3:
multiview.setmodel3();
break;
case 4:
multiview.setmodelbycolumnandrow(2, 2);
break;
case 6:
multiview.setmodel6();
break;
case 8:
multiview.setmodel8();
break;
case 9:
multiview.setmodelbycolumnandrow(3, 3);
break;
case 10:
multiview.setmodel10();
break;
case 16:
multiview.setmodelbycolumnandrow(4, 4);
break;
case 25:
multiview.setmodelbycolumnandrow(5, 5);
break;
}
multiview.currentmodel = model;
}
/// <summary>
/// 获取当前画面
/// </summary>
/// <returns></returns>
public static cellpanel currentcellpanel()
{
for (int index = 1; index <= multiview.maxcellnums; index++)
{
if (multiview.dictpanel[index].selected)
{
return multiview.dictpanel[index];
}
}
return null;
}
/// <summary>
/// 通过行列数设置画面分割
/// </summary>
/// <param name="column">列</param>
/// <param name="row">行</param>
public static void setmodelbycolumnandrow(int column, int row)
{
multiview.clear();
multiview.createcolumnandrow(multiview.originalgrid, row, column);
int num = 1;
for (int rowindex = 0; rowindex < row; rowindex++)
{
for (int columnindex = 0; columnindex < column; columnindex++)
{
cellpanel cellpanel = multiview.dictpanel[num];
grid.setcolumn(cellpanel, columnindex);
grid.setrow(cellpanel, rowindex);
multiview.originalgrid.children.add(cellpanel);
num++;
}
}
}
/// <summary>
/// 三画面
/// </summary>
public static void setmodel3()
{
multiview.clear();
columndefinition columndefinition1 = new columndefinition();
columndefinition columndefinition2 = new columndefinition();
columndefinition1.width = new gridlength(0.618, gridunittype.star);
columndefinition2.width = new gridlength(0.382, gridunittype.star);
multiview.originalgrid.columndefinitions.add(columndefinition1);
multiview.originalgrid.columndefinitions.add(columndefinition2);
cellpanel cellpanel = multiview.dictpanel[1];
grid.setcolumn(cellpanel, 0);
multiview.originalgrid.children.add(cellpanel);
for (int index1 = 0; index1 < 2; ++index1)
{
cellpanel = multiview.dictpanel[index1 + 2];
multiview.tempgrid1.rowdefinitions.add(new rowdefinition());
grid.setrow(cellpanel, index1);
multiview.tempgrid1.children.add(cellpanel);
}
grid.setcolumn(multiview.tempgrid1, 1);
multiview.originalgrid.children.add(multiview.tempgrid1);
}
/// <summary>
/// 六画面
/// </summary>
public static void setmodel6()
{
multiview.clear();
multiview.createcolumnandrow(multiview.originalgrid, 2, 2);
multiview.originalgrid.columndefinitions[0].width = new gridlength(0.66, gridunittype.star);
multiview.originalgrid.columndefinitions[1].width = new gridlength(0.34, gridunittype.star);
multiview.originalgrid.rowdefinitions[0].height = new gridlength(0.67, gridunittype.star);
multiview.originalgrid.rowdefinitions[1].height = new gridlength(0.33, gridunittype.star);
cellpanel cellpanel = multiview.dictpanel[1];
grid.setcolumn(cellpanel, 0);
grid.setrow(cellpanel, 0);
multiview.originalgrid.children.add(cellpanel);
//p2,p3 画面
grid.setcolumn(multiview.tempgrid1, 1);
grid.setrow(multiview.tempgrid1, 0);
for (int index = 0; index < 2; ++index)
{
cellpanel = multiview.dictpanel[index + 2];
multiview.tempgrid1.rowdefinitions.add(new rowdefinition());
grid.setrow(cellpanel, index);
multiview.tempgrid1.children.add(cellpanel);
}
multiview.originalgrid.children.add(multiview.tempgrid1);
//p4,p5 画面
grid.setcolumn(multiview.tempgrid2, 0);
grid.setrow(multiview.tempgrid2, 1);
for (int index = 0; index < 2; ++index)
{
cellpanel = multiview.dictpanel[index + 4];
multiview.tempgrid2.columndefinitions.add(new columndefinition());
grid.setcolumn(cellpanel, index);
multiview.tempgrid2.children.add(cellpanel);
}
multiview.originalgrid.children.add(multiview.tempgrid2);
cellpanel = multiview.dictpanel[6];
grid.setrow(cellpanel, 1);
grid.setcolumn(cellpanel, 1);
multiview.originalgrid.children.add(cellpanel);
}
/// <summary>
/// 八画面
/// </summary>
public static void setmodel8()
{
multiview.clear();
multiview.createcolumnandrow(multiview.originalgrid, 2, 2);
multiview.originalgrid.columndefinitions[0].width = new gridlength(0.75, gridunittype.star);
multiview.originalgrid.columndefinitions[1].width = new gridlength(0.25, gridunittype.star);
multiview.originalgrid.rowdefinitions[0].height = new gridlength(0.75, gridunittype.star);
multiview.originalgrid.rowdefinitions[1].height = new gridlength(0.25, gridunittype.star);
cellpanel cellpanel = multiview.dictpanel[1];
grid.setcolumn(cellpanel, 0);
grid.setrow(cellpanel, 0);
multiview.originalgrid.children.add(cellpanel);
//p2,p3,p4 画面
grid.setcolumn(multiview.tempgrid1, 1);
grid.setrow(multiview.tempgrid1, 0);
for (int index = 0; index < 3; ++index)
{
cellpanel = multiview.dictpanel[index + 2];
multiview.tempgrid1.rowdefinitions.add(new rowdefinition());
grid.setrow(cellpanel, index);
multiview.tempgrid1.children.add(cellpanel);
}
multiview.originalgrid.children.add(multiview.tempgrid1);
//p5,p6,p7 画面
grid.setcolumn(multiview.tempgrid2, 0);
grid.setrow(multiview.tempgrid2, 1);
for (int index = 0; index < 3; ++index)
{
cellpanel = multiview.dictpanel[index + 5];
multiview.tempgrid2.columndefinitions.add(new columndefinition());
grid.setcolumn(cellpanel, index);
multiview.tempgrid2.children.add(cellpanel);
}
multiview.originalgrid.children.add(multiview.tempgrid2);
cellpanel = multiview.dictpanel[8];
grid.setrow(cellpanel, 1);
grid.setcolumn(cellpanel, 1);
multiview.originalgrid.children.add(cellpanel);
}
/// <summary>
/// 十画面
/// </summary>
public static void setmodel10()
{
multiview.clear();
multiview.createcolumnandrow(multiview.originalgrid, 2, 2);
multiview.originalgrid.columndefinitions[0].width = new gridlength(0.77, gridunittype.star);
multiview.originalgrid.columndefinitions[1].width = new gridlength(0.23, gridunittype.star);
multiview.originalgrid.rowdefinitions[0].height = new gridlength(0.8, gridunittype.star);
multiview.originalgrid.rowdefinitions[1].height = new gridlength(0.2, gridunittype.star);
cellpanel cellpanel = multiview.dictpanel[1];
grid.setcolumn(cellpanel, 0);
grid.setrow(cellpanel, 0);
multiview.originalgrid.children.add(cellpanel);
//p2,p3,p4,p5 画面
grid.setcolumn(multiview.tempgrid1, 1);
grid.setrow(multiview.tempgrid1, 0);
for (int index = 0; index < 4; ++index)
{
cellpanel = multiview.dictpanel[index + 2];
multiview.tempgrid1.rowdefinitions.add(new rowdefinition());
grid.setrow(cellpanel, index);
multiview.tempgrid1.children.add(cellpanel);
}
multiview.originalgrid.children.add(multiview.tempgrid1);
//p6,p7,p8,p9 画面
grid.setcolumn(multiview.tempgrid2, 0);
grid.setrow(multiview.tempgrid2, 1);
for (int index = 0; index < 4; ++index)
{
cellpanel = multiview.dictpanel[index + 6];
multiview.tempgrid2.columndefinitions.add(new columndefinition());
grid.setcolumn(cellpanel, index);
multiview.tempgrid2.children.add(cellpanel);
}
multiview.originalgrid.children.add(multiview.tempgrid2);
cellpanel = multiview.dictpanel[10];
grid.setrow(cellpanel, 1);
grid.setcolumn(cellpanel, 1);
multiview.originalgrid.children.add(cellpanel);
}
/// <summary>
/// 索引画面全屏
/// </summary>
/// <param name="index">画面索引</param>
public static void setfullscreen(int index)
{
multiview.clear();
cellpanel cellpanel = multiview.dictpanel[index];
grid.setcolumn(cellpanel, 0);
grid.setrow(cellpanel, 0);
multiview.originalgrid.children.add(cellpanel);
}
private static void clear()
{
multiview.originalgrid.rowdefinitions.clear();
multiview.originalgrid.columndefinitions.clear();
multiview.originalgrid.children.clear();
multiview.tempgrid1.children.clear();
multiview.tempgrid1.rowdefinitions.clear();
multiview.tempgrid1.columndefinitions.clear();
multiview.tempgrid2.children.clear();
multiview.tempgrid2.rowdefinitions.clear();
multiview.tempgrid2.columndefinitions.clear();
}
private static void createcolumnandrow(grid grid, int row, int column)
{
for (int index = 0; index < row; ++index)
{
grid.rowdefinitions.add(new rowdefinition());
}
for (int index = 0; index < column; ++index)
{
grid.columndefinitions.add(new columndefinition());
}
}
}
2、 实现单通道画面控件cellpanel
1） 前台页面
<usercontrol x:class="multiviewcontrol.cellpanel"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:wfi="clr-namespace:system.windows.forms.integration;assembly=windowsformsintegration"
xmlns:wf="clr-namespace:system.windows.forms;assembly=system.windows.forms"
borderthickness="1" borderbrush="silver">
<grid background="black">
<wfi:windowsformshost >
<wf:panel x:name="panel" autosize="true" dock="fill"/>
</wfi:windowsformshost>
</grid>
</usercontrol>
2） 后台实现
1 public partial class cellpanel : system.windows.controls.usercontrol
2 {
3 public int index;
4 public bool selected;
5
6 private bool isfull = false;
7 private solidcolorbrush selectedcolor = new solidcolorbrush(colors.yellowgreen);
8 private solidcolorbrush mouseentercolor = new solidcolorbrush(colors.red);
9 private solidcolorbrush normalcolor = new solidcolorbrush(colors.silver);
10
11 public cellpanel()
12 {
13 this.initializecomponent();
14 this.panel.click += new eventhandler(this.panel_click);
15 this.panel.doubleclick += new eventhandler(this.panel_doubleclick);
16 this.panel.mouseenter += new eventhandler(this.panel_mouseenter);
17 this.panel.mouseleave += new eventhandler(this.panel_mouseleave);
18 this.panel.sizechanged += new eventhandler(this.panel_sizechange);
19 this.selected = false;
20 }
21
22 public void panel_click(object sender, eventargs e)
23 {
24 foreach (cellpanel cellpanel in multiview.dictpanel.values)
25 {
26 cellpanel.selected = false;
27 cellpanel.borderbrush = normalcolor;
28 }
29 this.selected = true;
30 this.borderbrush = selectedcolor;
31 }
32 public void panel_doubleclick(object sender, eventargs e)
33 {
34 if (this.isfull)
35 {
36 multiview.setcurrentmodel(multiview.currentmodel);
37 }
38 else
39 {
40 multiview.setfullscreen(this.index);
41 }
42
43 this.isfull = !this.isfull;
44 }
45 private void panel_mouseenter(object sender, eventargs e)
46 {
47 if (!this.selected)
48 {
49 this.borderbrush = mouseentercolor;
50 }
51 }
52
53 private void panel_mouseleave(object sender, eventargs e)
54 {
55 if (!this.selected)
56 {
57 this.borderbrush = normalcolor;
58 }
59 }
60 private void panel_sizechange(object sender, eventargs e)
61 {
62 this.panel.size = new system.drawing.size((int)this.width - 2, (int)this.height - 2);
63 }
64
65 }
3、新建一个窗体mainwindow，调用mutiview类
1） 前台页面
1 <window x:class="multiviewcontrol.mainwindow" 2 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 4 title="mainwindow" height="350" width="525"> 5 <grid> 6 <grid.rowdefinitions> 7 <rowdefinition height="*" /> 8 <rowdefinition height="40" /> 9 </grid.rowdefinitions> 10 <grid x:name="grid" /> 11 <stackpanel orientation="horizontal" grid.row="1"> 12 <button content="1画 面" tag="1" click="btn_click" margin="6" width="60"/> 13 <button content="3画 面" tag="3" click="btn_click" margin="6" width="60"/> 14 <button content="4画 面" tag="4" click="btn_click" margin="6" width="60"/> 15 <button content="6画 面" tag="6" click="btn_click" margin="6" width="60"/> 16 <button content="8画 面" tag="8" click="btn_click" margin="6" width="60"/> 17 <button content="9画 面" tag="9" click="btn_click" margin="6" width="60"/> 18 <button content="10画 面" tag="10" click="btn_click" margin="6" width="60"/> 19 </stackpanel> 20 </grid> 21 </window>
2） 后台实现
1 public partial class mainwindow : window
2 {
3 public mainwindow()
4 {
5 initializecomponent();
6 multiview.initgrid(this.grid, 64);
7 multiview.setcurrentmodel(4);
8 }
9
10 private void btn_click(object sender, routedeventargs e)
11 {
12 button btn = sender as button;
13 int index = 0;
14 if(btn.tag != null)
15 {
16 multiview.setcurrentmodel(convert.toint32( btn.tag));
17 }
18
19 }
20
21 }
多画面切换就ok了！希望能对大家有用！
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