PIE SDK 基于Dot net bar实现比例尺控件

Posted 2022-08-31 lw-ma

最近在搭建主界面的过程中，为了界面美观大方，使用了Dot net bar。但是，在Dot net bar的状态栏中放置PIE SDK自带的比例尺控件，运行主界面程序后，比例尺控件始终不显示比例尺信息，得不到想要的效果。如果使用Windows Form自带的状态栏，则能够正常显示比例尺信息。我猜想，可能是PIE SDK自带的比例尺控件与Dot net bar不兼容。我参考了官方博客（https://www.cnblogs.com/PIESat/p/10272779.html），利用Dot net bar拓展实现了比例尺控件。

基于Dot net bar，利用PIE SDK自带的比例尺控件（代码如下），运行程序后的显示效果如下图（不能正常显示比例尺信息）：

 1  public FormMain()
 2         
 3             InitializeComponent();
 4             mapControlMain.OnExtentUpdated += mapControlMain_OnExtentUpdated;//鹰眼图          
 5             ///比例尺控件
 6             //Common.MapScaleCommandControl mapScaleControl = new Common.MapScaleCommandControl();
 7             //mapScaleControl.Control = comboBoxItem_MapScale;
 8             //mapScaleControl.OnCreate(mapControlMain);
 9             MapScaleCommandControl mapScale = new MapScaleCommandControl();
10             mapScale.Control = comboBoxItem_MapScale;
11             mapScale.OnCreate(mapControlMain);
12             //进度条//首先隐藏需要时显现
13             this.progressBarItem.Visible = false;
14             Control.CheckForIllegalCrossThreadCalls = false;
15         

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利用基于Dot net bar拓展实现的比例尺控件（代码如下），运行程序后显示的效果如下图（可正常显示比例尺信息）：

 1 public FormMain()
 2         
 3             InitializeComponent();
 4             mapControlMain.OnExtentUpdated += mapControlMain_OnExtentUpdated;//鹰眼图          
 5             ///比例尺控件
 6             Common.MapScaleCommandControl mapScaleControl = new Common.MapScaleCommandControl();
 7             mapScaleControl.Control = comboBoxItem_MapScale;
 8             mapScaleControl.OnCreate(mapControlMain);
 9             //MapScaleCommandControl mapScale = new MapScaleCommandControl();
10             //mapScale.Control = comboBoxItem_MapScale;
11             //mapScale.OnCreate(mapControlMain);
12             //进度条//首先隐藏需要时显现
13             this.progressBarItem.Visible = false;
14             Control.CheckForIllegalCrossThreadCalls = false;
15         

View Code

利用Dot net bar拓展实现的比例尺控件代码如下：

  1 /// <summary>
  2     /// 比例尺控件
  3     /// </summary>
  4     #region
  5     class MapScaleCommandControl : PIE.Controls.BaseCommandControl
  6     
  7         #region 成员变量
  8         /// <summary>
  9         /// ToolStripComboBox
 10         /// </summary>
 11         private DevComponents.DotNetBar.ComboBoxItem m_DotNetBarComboxItem = null;
 12         #endregion
 13 
 14         /// <summary>
 15         /// 构造函数
 16         /// </summary>
 17         public MapScaleCommandControl()
 18         
 19             this.Caption = "";
 20             this.Name = "";
 21             this.Checked = false;
 22             this.Enabled = false;
 23         
 24         /// <summary>
 25         /// Control
 26         /// </summary>
 27         public override object Control
 28         
 29             get
 30             
 31                 return m_DotNetBarComboxItem;
 32             
 33             set
 34             
 35                 m_DotNetBarComboxItem = value as DevComponents.DotNetBar.ComboBoxItem;
 36             
 37         
 38         /// <summary>
 39         /// 是否可用
 40         /// </summary>
 41         public override bool Enabled
 42         
 43             get
 44             
 45                 if (m_Hook == null || m_HookHelper.ActiveView.FocusMap.LayerCount < 1) return false;
 46                 return true;
 47             
 48             protected set
 49             
 50                 base.Enabled = value;
 51             
 52         
 53         /// <summary>
 54         /// 创建插件对象
 55         /// </summary>
 56         /// <param name="hook"></param>
 57         public override void OnCreate(object hook)
 58         
 59             if (hook == null) return;
 60             if (!(hook is PIE.Carto.IPmdContents)) return;
 61             this.Enabled = true;
 62             m_Hook = hook;
 63             m_HookHelper.Hook = hook;
 64 
 65             if (m_DotNetBarComboxItem == null) return;
 66             DevComponents.DotNetBar.ComboBoxItem comboxItem = this.m_DotNetBarComboxItem as DevComponents.DotNetBar.ComboBoxItem;
 67             if (comboxItem == null) return;
 68 
 69             comboxItem.Items.Add("1:500");
 70             comboxItem.Items.Add("1:1000");
 71             comboxItem.Items.Add("1:5000");
 72             comboxItem.Items.Add("1:10000");
 73             comboxItem.Items.Add("1:50000");
 74             comboxItem.Items.Add("1:100000");
 75             comboxItem.Items.Add("1:500000");
 76             comboxItem.Items.Add("1:1000000");
 77             //comboxItem.KeyPress += comboxItem_KeyPress;
 78             comboxItem.SelectedIndexChanged += comboxItem_SelectedIndexChanged;
 79             (hook as PIE.AxControls.MapControl).OnExtentUpdated += MapScaleCommandControl_OnExtentUpdated;    
 80         
 81         void comboxItem_SelectedIndexChanged(object sender, EventArgs e)
 82         
 83             //获取选中的比例尺
 84             string strScale = m_DotNetBarComboxItem.Text.ToString();
 85             int count = strScale.Length;
 86             if (count < 3) return;
 87             string str = strScale.Substring(2, count - 2);
 88             double scale = Convert.ToDouble(str);
 89             if (scale < 1) return;
 90 
 91             //改变地图的比例尺并更新
 92             m_HookHelper.ActiveView.DisplayTransformation.MapScale = scale;
 93             m_HookHelper.ActiveView.PartialRefresh(PIE.Carto.ViewDrawPhaseType.ViewAll);
 94         
 95         private void MapScaleCommandControl_OnExtentUpdated(object sender, bool sizeChanged, PIE.Geometry.IEnvelope newEnvelope)
 96         
 97             string strScale = m_HookHelper.ActiveView.DisplayTransformation.MapScale.ToString();
 98             double scale = Convert.ToDouble(strScale);
 99             strScale = "1:" + scale.ToString("0");
100             m_DotNetBarComboxItem.ComboBoxEx.Text = strScale;
101             this.m_DotNetBarComboxItem.Text = strScale;
102            
103         /// <summary>
104         /// 比例尺文本变化事件
105         /// </summary>
106         /// <param name="sender"></param>
107         /// <param name="e"></param>
108         void comboxItem_TextChanged(object sender, EventArgs e)
109         
110             //获取选中的比例尺
111             string strScale = m_DotNetBarComboxItem.Text.ToString();
112             int count = strScale.Length;
113             if (count < 3) return;
114             string str = strScale.Substring(2, count - 2);
115             double scale = Convert.ToDouble(str);
116             if (scale < 1) return;
117 
118             //改变地图的比例尺并更新
119             m_HookHelper.ActiveView.DisplayTransformation.MapScale = scale;
120             m_HookHelper.ActiveView.PartialRefresh(PIE.Carto.ViewDrawPhaseType.ViewAll);
121         
122         /// <summary>
123         /// 点击事件
124         /// </summary>
125         public override void OnClick()
126         
127             base.OnClick();
128         
129     
130 #endregion

View Code

有不对的地方，请大家批评指正。