/// <summary>
/// Updates the display of the crosshair representing the go location
/// </summary>
private void UpdateGoLocation()
{
if (Tree.SelectedNode.Tag is MapRegion)
{
MapRegion region = Tree.SelectedNode.Tag as MapRegion;
if ((region.GoLocation.X == -1) && (region.GoLocation.Y == -1))
return;
if ((m_CrossHair1 == null) || (m_CrossHair2 == null))
{
// No existing crosshair
m_CrossHair1 = new MapCircle(3, new Point(region.GoLocation.X, region.GoLocation.Y), Map.Map, CrossHairColor);
m_CrossHair2 = new MapCross(4, CrossHairColor, new Point(region.GoLocation.X, region.GoLocation.Y), Map.Map);
Map.AddDrawObject(m_CrossHair1, false);
Map.AddDrawObject(m_CrossHair2, true);
}
else
{
// There's an existing crosshair, so just update the current information
m_CrossHair1.Location = new Point(region.GoLocation.X, region.GoLocation.Y);
m_CrossHair2.Location = new Point(region.GoLocation.X, region.GoLocation.Y);
Map.Refresh();
}
}
else
{
// This isn't a region. Remove cross hair if it exists
if (m_CrossHair1 != null)
{
Map.RemoveDrawObject(m_CrossHair1);
m_CrossHair1 = null;
}
if (m_CrossHair2 != null)
{
Map.RemoveDrawObject(m_CrossHair2);
m_CrossHair2 = null;
}
}
}
/// <summary>
/// Tree: BEFORE SELECT
/// </summary>
private void Tree_BeforeSelect(object sender, System.Windows.Forms.TreeViewCancelEventArgs e)
{
// Always reset the SetGo flag
m_SetGo = false;
// Selection removed
if (Tree.SelectedNode != null)
{
// Revert colors
Tree.SelectedNode.ForeColor = SystemColors.WindowText;
Tree.SelectedNode.BackColor = SystemColors.Window;
// Remove draw objects
Map.RemoveAllDrawObjects();
m_CrossHair1 = null;
m_CrossHair2 = null;
}
}