MapView.CollapsibleSplitter.animationTimerTick C# (CSharp) Method

		private void animationTimerTick(object sender, System.EventArgs e)
		{
			switch(currentState)
			{
				case SplitterState.Collapsing:

					if(this.Dock == DockStyle.Left || this.Dock == DockStyle.Right)
					{
						// vertical splitter
						if(controlToHide.Width > animationStep)
						{
							if(expandParentForm && parentForm.WindowState != FormWindowState.Maximized
								&& parentForm != null)
							{
								parentForm.Width -= animationStep;
							}
							controlToHide.Width -= animationStep;
						}
						else
						{
							if(expandParentForm && parentForm.WindowState != FormWindowState.Maximized
								&& parentForm != null)
							{
								parentForm.Width = parentFormWidth;
							}
							controlToHide.Visible = false;
							animationTimer.Enabled = false;
							controlToHide.Width = controlWidth;
							currentState = SplitterState.Collapsed;
							this.Invalidate();
						}
					}
					else 
					{
						// horizontal splitter
						if(controlToHide.Height > animationStep)
						{
							if(expandParentForm && parentForm.WindowState != FormWindowState.Maximized
								&& parentForm != null)
							{
								parentForm.Height -= animationStep;
							}
							controlToHide.Height -= animationStep;
						}
						else
						{
							if(expandParentForm && parentForm.WindowState != FormWindowState.Maximized
								&& parentForm != null)
							{
								parentForm.Height = parentFormHeight;
							}
							controlToHide.Visible = false;
							animationTimer.Enabled = false;
							controlToHide.Height = controlHeight;
							currentState = SplitterState.Collapsed;
							this.Invalidate();
						}
					}
					break;

				case SplitterState.Expanding:

					if(this.Dock == DockStyle.Left || this.Dock == DockStyle.Right)
					{
						// vertical splitter
						if(controlToHide.Width < (controlWidth - animationStep))
						{
							if(expandParentForm && parentForm.WindowState != FormWindowState.Maximized
								&& parentForm != null)
							{
								parentForm.Width += animationStep;
							}
							controlToHide.Width += animationStep;
						}
						else
						{
							if(expandParentForm && parentForm.WindowState != FormWindowState.Maximized
								&& parentForm != null)
							{
								parentForm.Width = parentFormWidth;
							}
							controlToHide.Width = controlWidth;
							controlToHide.Visible = true;
							animationTimer.Enabled = false;
							currentState = SplitterState.Expanded;
							this.Invalidate();
						}
					}
					else 
					{
						// horizontal splitter
						if(controlToHide.Height < (controlHeight - animationStep))
						{
							if(expandParentForm && parentForm.WindowState != FormWindowState.Maximized
								&& parentForm != null)
							{
								parentForm.Height += animationStep;
							}
							controlToHide.Height += animationStep;
						}
						else
						{
							if(expandParentForm && parentForm.WindowState != FormWindowState.Maximized
								&& parentForm != null)
							{
								parentForm.Height = parentFormHeight;
							}
							controlToHide.Height = controlHeight;
							controlToHide.Visible = true;
							animationTimer.Enabled = false;
							currentState = SplitterState.Expanded;
							this.Invalidate();
						}

					}
					break;
			}
		}