简单功能分析——主窗体的键盘监听处理及拷贝和粘贴位置坐标功能
在分析功能时发现，各功能都有自己的快捷键相应，比如今天要分析的 Copy Coordinates (Ctrl+C)和Paste Coordinates (Ctrl+P)，以及主窗体的全屏功能也是通过快捷键（Alt+Enter）。这就使我需要彻底分析一下主窗体的键盘监听处理啦。
主窗体的键盘监听处理
与WorldWind系列三：功能分析——截屏功能和“关于”窗体分析 中AboutDialog.cs分析类似，WorldWind主窗体也是重载了OnKeyUp，使窗体接受键盘响应。
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protected override void OnKeyUp(KeyEventArgs e)
{
if (this.webBrowserPanel.IsTyping()) //如果是在“网页窗体”（稍后介绍）里输入地址，则主窗体处不相应键盘事件，将 e.Handled = true;表示已经处理事件啦。
e.Handled = true;
else e.Handled = HandleKeyUp(e); //此处HandleKeyUp（）是真正处理主窗口的键盘响应
base.OnKeyUp(e);
}
HandleKeyUp函数
真正处理键盘响应函数
/// <summary>
/// Handles key up events.
/// </summary>
/// <param name="e"></param>
/// <returns>Returns true if the key is handled.</returns>
protected bool HandleKeyUp(KeyEventArgs e)
{
// keep keypresses inside browser url bar
if(e.Handled)
return true;
if (e.Alt) //处理Alt 组合键
{
// Alt key down
switch(e.KeyCode)
{
case Keys.A:
menuItemAlwaysOnTop_Click(this,e);
return true;
case Keys.Q:
using( PropertyBrowserForm worldWindSettings = new PropertyBrowserForm( Settings, "World Wind Settings" ) )
{
worldWindSettings.Icon = this.Icon;
worldWindSettings.ShowDialog();
}
return true;
case Keys.W:
menuItemOptions_Click(this, EventArgs.Empty);
return true;
case Keys.Enter: // 实现全屏功能，稍后看看如何实现？？
this.FullScreen = !this.FullScreen;
return true;
case Keys.F4:
Close();
return true;
}
}
else if (e.Control) //处理Ctrl组合键
{
// Control key down
switch(e.KeyCode)
{
case Keys.C:
case Keys.Insert: //调用拷贝坐标功能，即Copy Coordinates (Ctrl+C)
menuItemCoordsToClipboard_Click(this, e);
return true;
case Keys.F:
return true;
case Keys.H:
if (progressMonitor != null)
{
bool wasVisible = progressMonitor.Visible;
progressMonitor.Close();
progressMonitor.Dispose();
progressMonitor = null;
if (wasVisible)
return true;
}
progressMonitor = new ProgressMonitor();
progressMonitor.Icon = this.Icon;
progressMonitor.Show();
return true;
case Keys.I:
menuItemConfigWizard_Click(this,e);
return true;
case Keys.N:
menuItemOptions_Click(this,e);
return true;
case Keys.T: //控制工具栏的显示。
menuItemShowToolbar_Click(this,e);
return true;
case Keys.V: //粘贴坐标，并转向粘贴的坐标位置。今天分析
menuItemEditPaste_Click(this,e);
return true;
case Keys.S: //保存截屏，已经分析
menuItemSaveScreenShot_Click(this, e);
return true;
}
}
else if (e.Shift)
{
// Shift key down
switch(e.KeyCode)
{
case Keys.Insert:
menuItemEditPaste_Click(this,e);
return true;
case Keys.S:
menuItemSunShading_Click(this, e);
return true;
case Keys.A:
menuItemAtmosphericScattering_Click(this, e);
return true;
}
}
else
{
// Other or no modifier key
switch(e.KeyCode)
{
//case Keys.B:
// menuItemWMS_Click(this, e);
// return true;
case Keys.G:
return true;
case Keys.L:
menuItemLayerManager_Click(this, e);
return true;
case Keys.P:
if(this.pathMaker == null)
{
this.pathMaker = new PathMaker(this.worldWindow);
this.pathMaker.Icon = this.Icon;
}
this.pathMaker.Visible = !this.pathMaker.Visible;
return true;
case Keys.V:
if(this.placeBuilderDialog == null)
{
this.placeBuilderDialog = new PlaceBuilder( this.worldWindow );
this.placeBuilderDialog.Icon = this.Icon;
}
this.placeBuilderDialog.Visible = !this.placeBuilderDialog.Visible;
return true;
case Keys.Escape: //退出全屏快捷键 ESC
if (this.FullScreen)
{
this.FullScreen = false;
return true;
}
break;
case Keys.D1:
case Keys.NumPad1:
this.VerticalExaggeration = 1.0f;
return true;
case Keys.D2:
case Keys.NumPad2:
this.VerticalExaggeration = 2.0f;
return true;
case Keys.D3:
case Keys.NumPad3:
this.VerticalExaggeration = 3.0f;
return true;
case Keys.D4:
case Keys.NumPad4:
this.VerticalExaggeration = 4.0f;
return true;
case Keys.D5:
case Keys.NumPad5:
this.VerticalExaggeration = 5.0f;
return true;
case Keys.D6:
case Keys.NumPad6:
this.VerticalExaggeration = 6.0f;
return true;
case Keys.D7:
case Keys.NumPad7:
this.VerticalExaggeration = 7.0f;
return true;
case Keys.D8:
case Keys.NumPad8:
this.VerticalExaggeration = 8.0f;
return true;
case Keys.D9:
case Keys.NumPad9:
this.VerticalExaggeration = 9.0f;
return true;
case Keys.D0:
case Keys.NumPad0:
this.VerticalExaggeration = 0.0f;
return true;
case Keys.F1:
this.menuItemAnimatedEarth_Click(this,e);
return true;
case Keys.F2:
this.menuItemModisHotSpots_Click(this,e);
return true;
case Keys.F5:
this.menuItemRefreshCurrentView_Click(this,e);
return true;
case Keys.F6:
return true;
case Keys.F7:
this.menuItemShowLatLonLines_Click(this,e);
return true;
case Keys.F8:
this.menuItemPlanetAxis_Click(this,e);
return true;
case Keys.F9:
this.menuItemShowCrosshairs_Click(this,e);
return true;
case Keys.F10:
this.menuItemShowPosition_Click(this,e);
return true;
case Keys.F11:
this.menuItemConstantMotion_Click(this,e);
return true;
case Keys.F12:
this.menuItemPointGoTo_Click(this,e);
return true;
}
}
return false;
}