buttonslist.cpp

远程网络监视程序的源码

//*******************************************************************************
// COPYRIGHT NOTES
// ---------------
// This is a part of the BCGControlBar Library
// Copyright (C) 1998-2000 BCGSoft Ltd.
// All rights reserved.
//
// This source code can be used, distributed or modified
// only under terms and conditions 
// of the accompanying license agreement.
//*******************************************************************************

// ButtonsList.cpp : implementation file
//

#include "stdafx.h"

#ifndef BCG_NO_CUSTOMIZATION

#include "afxadv.h"
#include <afxpriv.h>
#include "bcgprores.h"
#include "ButtonsList.h"
#include "BCGPToolbarButton.h"
#include "BCGPToolBarImages.h"
#include "BCGGlobals.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

static const int iXOffset = 4;
static const int iYOffset = 5;

/////////////////////////////////////////////////////////////////////////////
// CButtonsList

CButtonsList::CButtonsList()
{
	m_pSelButton = NULL;
	m_pImages = NULL;

	m_iScrollOffset = 0;
	m_iScrollTotal = 0;
	m_iScrollPage = 0;

	m_bEnableDragFromList = FALSE;

	m_bInited = FALSE;
	m_bFocused = FALSE;
}
//**************************************************************************************
CButtonsList::~CButtonsList()
{
}

BEGIN_MESSAGE_MAP(CButtonsList, CButton)
	//{{AFX_MSG_MAP(CButtonsList)
	ON_WM_ERASEBKGND()
	ON_WM_LBUTTONDOWN()
	ON_WM_VSCROLL()
	ON_WM_ENABLE()
	ON_WM_SYSCOLORCHANGE()
	ON_WM_SIZE()
	ON_WM_CTLCOLOR()
	ON_WM_KEYDOWN()
	ON_WM_GETDLGCODE()
	ON_WM_SETFOCUS()
	ON_WM_KILLFOCUS()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CButtonsList message handlers

BOOL CButtonsList::OnEraseBkgnd(CDC* pDC) 
{
	CRect rectClient;	// Client area rectangle
	GetClientRect (&rectClient);

	pDC->FillSolidRect (&rectClient, globalData.clrBtnFace);
	return TRUE;
}
//*********************************************************************************************
void CButtonsList::DrawItem (LPDRAWITEMSTRUCT lpDIS)
{
	if (!m_bInited)
	{
		RebuildLocations ();
	}

	CDC* pDC = CDC::FromHandle (lpDIS->hDC);
	CRect rectClient = lpDIS->rcItem;

	if (m_pImages != NULL)
	{
		CBCGPDrawState ds;
		if (!m_pImages->PrepareDrawImage (ds))
		{
			return;
		}

		for (POSITION pos = m_Buttons.GetHeadPosition (); pos != NULL;)
		{
			CBCGPToolbarButton* pButton = (CBCGPToolbarButton*) m_Buttons.GetNext (pos);
			ASSERT (pButton != NULL);

			CRect rect = pButton->Rect ();
			rect.OffsetRect (0, -m_iScrollOffset);

			if (rect.top >= rectClient.bottom)
			{
				break;
			}

			if (rect.bottom > rectClient.top)
			{
				int nSaveStyle = pButton->m_nStyle;

				if (!IsWindowEnabled ())
				{
					pButton->m_nStyle |= TBBS_DISABLED;
				}

				pButton->OnDraw (pDC, rect, m_pImages);
				pButton->m_nStyle = nSaveStyle;

				if (pButton == m_pSelButton && IsWindowEnabled ())
				{
					//--------------------
					// Draw selection bar:
					//--------------------
					HWND hwndButton = pButton->GetHwnd ();
					if (hwndButton != NULL)
					{
						rect.InflateRect (0, 2);
					}

					if (!m_bFocused)
					{
						for (int i = 0; i < 2; i ++)
						{
							pDC->DrawFocusRect (&rect);
							rect.DeflateRect (1, 1);
						}
					}
					else
					{
						pDC->Draw3dRect (rect, globalData.clrBtnShadow, globalData.clrBtnHilite);
					}
				}
			}
		}

		m_pImages->EndDrawImage (ds);
	}

	pDC->Draw3dRect (rectClient, globalData.clrBtnShadow, globalData.clrBtnHilite);
}
//*********************************************************************************************
void CButtonsList::OnLButtonDown(UINT /*nFlags*/, CPoint point) 
{
	SetFocus ();

	CBCGPToolbarButton* pButton = HitTest (point);
	if (pButton == NULL)
	{
		return;
	}

	SelectButton (pButton);

	if (m_bEnableDragFromList)
	{
		COleDataSource srcItem;

		pButton->m_bDragFromCollection = TRUE;
		pButton->PrepareDrag (srcItem);
		pButton->m_bDragFromCollection = TRUE;

		srcItem.DoDragDrop ();
	}
}
//*********************************************************************************************
void CButtonsList::SetImages (CBCGPToolBarImages* pImages)
{
	ASSERT_VALID (pImages);
	m_pImages = pImages;

	m_sizeButton.cx = m_pImages->GetImageSize ().cx + 6;
	m_sizeButton.cy = m_pImages->GetImageSize ().cy + 7;
	
	RemoveButtons ();
}
//*********************************************************************************************
void CButtonsList::AddButton (CBCGPToolbarButton* pButton)
{
	ASSERT_VALID (pButton);
	ASSERT (m_pImages != NULL);

	m_Buttons.AddTail (pButton);
	pButton->OnChangeParentWnd (this);

	RebuildLocations ();

	HWND hwnd = pButton->GetHwnd ();
	if (hwnd != NULL)
	{
		::EnableWindow (hwnd, FALSE);
	}
}
//*********************************************************************************************
void CButtonsList::RemoveButtons ()
{
	SelectButton ((CBCGPToolbarButton*) NULL);

	while (!m_Buttons.IsEmpty ())
	{
		CBCGPToolbarButton* pButton = 
			(CBCGPToolbarButton*) m_Buttons.RemoveHead ();
		ASSERT_VALID (pButton);

		pButton->OnChangeParentWnd (NULL);
	}

	m_iScrollOffset = 0;
	m_iScrollTotal = 0;
	m_iScrollPage = 0;

	EnableScrollBarCtrl (SB_VERT, FALSE);
	SetScrollRange (SB_VERT, 0, 0);
}
//*********************************************************************************************
CBCGPToolbarButton* CButtonsList::HitTest (POINT point) const
{
	CRect rectClient;
	GetClientRect (&rectClient);

	for (POSITION pos = m_Buttons.GetHeadPosition (); pos != NULL;)
	{
		CBCGPToolbarButton* pButton = (CBCGPToolbarButton*) m_Buttons.GetNext (pos);
		ASSERT (pButton != NULL);

		CRect rect = pButton->Rect ();
		rect.OffsetRect (0, -m_iScrollOffset);

		if (rect.PtInRect (point))
		{
			return pButton;
		}
	}

	return NULL;
}
//*********************************************************************************************
void CButtonsList::SelectButton (CBCGPToolbarButton* pButton)
{
	if (m_pSelButton == pButton)
	{
		RedrawSelection ();
		return;
	}

	CBCGPToolbarButton* pOldSel = m_pSelButton;
	m_pSelButton = pButton;

	CRect rectClient;
	GetClientRect (&rectClient);

	CRect rectSelected;
	rectSelected.SetRectEmpty ();

	for (POSITION pos = m_Buttons.GetHeadPosition (); pos != NULL;)
	{
		CBCGPToolbarButton* pListButton = (CBCGPToolbarButton*) m_Buttons.GetNext (pos);
		ASSERT (pListButton != NULL);

		CRect rect = pListButton->Rect ();
		rect.OffsetRect (0, -m_iScrollOffset);

		if (pListButton == m_pSelButton)
		{
			rectSelected = rect;
		}

		if (pListButton == m_pSelButton ||
			pListButton == pOldSel)
		{
			rect.InflateRect (2, 2);

			CRect rectInter;
			if (rectInter.IntersectRect (rectClient, rect))
			{
				InvalidateRect (&rectInter);
			}
		}
	}

	if (!rectSelected.IsRectEmpty ())
	{
		if (rectSelected.top >= rectClient.bottom || 
			rectSelected.bottom <= rectClient.top)
		{
			int iNewOffset = 
				max (0,
					min (rectSelected.bottom - m_iScrollOffset - rectClient.Height (), 
						m_iScrollTotal));
			SetScrollPos (SB_VERT, iNewOffset);

			m_iScrollOffset = iNewOffset;
			Invalidate ();
		}
	}

	UpdateWindow ();

	//-------------------------------------------------------
	// Trigger mouse up event (to button click notification):
	//-------------------------------------------------------
	CWnd* pParent = GetParent ();
	if (pParent != NULL)
	{
		pParent->SendMessage (	WM_COMMAND,
								MAKEWPARAM (GetDlgCtrlID (), BN_CLICKED), 
								(LPARAM) m_hWnd);
	}
}
//*********************************************************************************************