AnimatedRollupControl with C++/CLI

#include "StdAfx.h"
#include "RollupCtrlPage.h"
#include "RollupCtrl.h"


//
// The user Toggles the page state with button1
//
void RollupCtrlPage::button1_MouseDown(System::Object^  sender, System::Windows::Forms::MouseEventArgs^  e) 
{
	if ( e->Button == ::MouseButtons::Left )
	{
		//
		// suppress the processing of the rollup page button clicks stored in buffer
		// otherwise the user could click the button many, many times, and be forced
		// to wait and watch numerous amounts of unneccessary page scrolling/unscrolling animations
		// There is also a drawback doing this: When user is rapidly clicking the button, some clicks are lost
		// (i.e. never processed)
		//
		if(e->Clicks > 1)return;

		// toggle the page state unconditionally
		bIsExpanded = !bIsExpanded;

		RollThePage();		
			
		((RollupCtrl^)(this->Parent))->UpdatePageStates(this->Name,bIsExpanded);
		
	}
}

//
// Developers call this method to conditionally change the rollup state to a new state 
// if bExpand is true the page is expanded, if bExpand is false the page is contracted
//
void RollupCtrlPage::Expand(bool bExpand)
{
	// change the page state only if it is not already in the state indictaed by the bExpand flag
	if(bIsExpanded != bExpand)
	{
		bIsExpanded = bExpand; 
		RollThePage();
	}

}

void RollupCtrlPage::RollThePage()
{
	if(((RollupCtrl^)(this->Parent))->AnimatedRoll)			
			Rollup_Animated();
		else
			Rollup_Quick();	
}

void RollupCtrlPage::Rollup_Quick()
{
	int delta = (this->deltaSize-3);
	if(bIsExpanded == true)
	{
		//expand it
		this->button1->Text = L"-  " + Name;
		this->Resize(delta);
		((RollupCtrl^)(this->Parent))->AdjustLayout(this,delta);		
	}
	else
	{
		//close it
		this->button1->Text = L"+  " + Name;
		this->Resize(-delta);
		((RollupCtrl^)(this->Parent))->AdjustLayout(this,-delta);		
	}
}

void RollupCtrlPage::Rollup_Animated()
{	
	int delta = ((RollupCtrl^)(this->Parent))->CurrentRollupSpeed;
	int maxMove = (this->deltaSize-3);
	int movedSoFar = 0;

	if(bIsExpanded == true)
	{
		this->button1->Text = L"-  " + Name;
		// animation loop
		for(movedSoFar = 0;movedSoFar < maxMove;movedSoFar+=delta)  
		{
			if(maxMove-movedSoFar < delta)
				delta = maxMove-movedSoFar;
			this->Resize(delta);
			((RollupCtrl^)(this->Parent))->AdjustLayout(this,delta);			
		}				
	}
	else//if(bIsExpanded == false)
	{
		this->button1->Text = L"+  " + Name;
		// animation loop
		for(movedSoFar = 0;movedSoFar < maxMove;movedSoFar+=delta)
		{
			if(maxMove-movedSoFar < delta)
				delta = maxMove-movedSoFar;
			this->Resize(-delta);			
			((RollupCtrl^)(this->Parent))->AdjustLayout(this,-delta);			
		}				
	}	
}

void RollupCtrlPage::Resize(int sizeChange)
{
	if(dialogPanel == nullptr)
	{
		this->dialogPanel->Location = System::Drawing::Point(dialogPanel->Location.X, dialogPanel->Location.Y + sizeChange);
		this->groupBox1->Size = System::Drawing::Size(groupboxwidth,groupBox1->Height + sizeChange);	
		this->Size = System::Drawing::Size(width ,this->Height + sizeChange);
	}
	else
	{
		this->dialogPanel->Location = System::Drawing::Point(dialogPanel->Location.X, dialogPanel->Location.Y + sizeChange);
		this->groupBox1->Size = System::Drawing::Size(groupboxwidth,groupBox1->Height + sizeChange);	
		this->Size = System::Drawing::Size(width ,this->Height + sizeChange);
	}
}


void RollupCtrlPage::OnMouseWheel(System::Windows::Forms::MouseEventArgs^ e)
{
	bcontainsMouse = ((RollupCtrl^)(this->Parent))->ContainsMouse();
	// only if the mouse cursor is somewhere in the parent rollup control do we want to use the wheel
	if(bcontainsMouse == false)return;
	//
	// Update the drawing based upon the mouse wheel scrolling.
	// Currently, a value of 120 is the standard for one detent.
	// For more details see: 
	//			http://msdn.microsoft.com/en-us/library/system.windows.forms.mouseeventargs.delta(VS.71).aspx
	//
    int numberOfPixelsToMove = e->Delta * SystemInformation::MouseWheelScrollLines / 120;
	((RollupCtrl^)(this->Parent))->MouseWheel_Scroll(numberOfPixelsToMove);
	//Panel::OnMouseWheel(e); // base class method should be called according to MS docs. but...
}

void RollupCtrlPage::RollupCtrlPage_MouseDown(System::Object^  sender, System::Windows::Forms::MouseEventArgs^  e) 
{
	if ( e->Button == ::MouseButtons::Left )
	{
		bLButtonDown = true;
		// init start position to drag from
		lastMouseYPos = MousePosition.Y;
		if(((RollupCtrl^)(this->Parent))->VScrollVisible)
		{
			if(((RollupCtrl^)(this->Parent))->GrabCursorExists)
				this->Cursor = gcnew System::Windows::Forms::Cursor("Grab.Cur");
		}
	}	
}

void RollupCtrlPage::RollupCtrlPage_MouseUp(System::Object^  sender, System::Windows::Forms::MouseEventArgs^  e) 
{
	if ( e->Button == ::MouseButtons::Left )
	{
		bLButtonDown = false;
		if(bcontainsMouse)
		{
			if(((RollupCtrl^)(this->Parent))->VScrollVisible)
			{
				if(((RollupCtrl^)(this->Parent))->PanCursorExists)
					this->Cursor = gcnew System::Windows::Forms::Cursor("Pan.Cur");
			}
		}
	}
	
	if ( e->Button == ::MouseButtons::Right )
	{
		((RollupCtrl^)(this->Parent))->contextMenuStrip_Show(bcontainsMouse);		 
	}
}

void RollupCtrlPage::RollupCtrlPage_MouseMove(System::Object^  sender, System::Windows::Forms::MouseEventArgs^  e)
{
	bcontainsMouse = ((RollupCtrl^)(this->Parent))->ContainsMouse();
	if(bcontainsMouse == false)return;

	int delta = 0;
	if(bLButtonDown)
	{		
		delta = lastMouseYPos-MousePosition.Y;
		((RollupCtrl^)(this->Parent))->MouseLeftButtonDrag_Scroll(delta);
	}	
	lastMouseYPos = MousePosition.Y;
}

void RollupCtrlPage::RollupCtrlPage_MouseEnter(Object^ sender, System::EventArgs^ /*e*/)
{
	if(bcontainsMouse == false)
		bcontainsMouse = ((RollupCtrl^)(this->Parent))->ContainsMouse();
	if(bcontainsMouse)
	{
		((RollupCtrl^)(this->Parent))->CurrentPage = this;

		if(((RollupCtrl^)(this->Parent))->VScrollVisible)
			if(((RollupCtrl^)(this->Parent))->PanCursorExists)
				this->Cursor = gcnew System::Windows::Forms::Cursor("Pan.Cur");
		this->Focus();
	}
}

void RollupCtrlPage::RollupCtrlPage_MouseLeave(Object^ sender, System::EventArgs^ /*e*/)
{
	if(bcontainsMouse == true)
		bcontainsMouse = ((RollupCtrl^)(this->Parent))->ContainsMouse();
	if(bcontainsMouse)
	{
		this->Cursor = Cursors::Default;
	}
}