flatbar.cpp

VC++环境下的GPS全球定位系统源代码

#include "stdafx.h"
#include "flatbar.h"
#include "resource.h"

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

#ifndef TBSTYLE_FLAT
#define TBSTYLE_FLAT 0x0800	// (in case you don't have the new commctrl.h)
#endif

#ifndef TB_GETIMAGELIST
#define TB_GETIMAGELIST         (WM_USER + 49)
#endif // TB_GETIMAGELIST

#ifndef TB_SETINDENT
#define TB_SETINDENT            (WM_USER + 47)
#endif

BEGIN_MESSAGE_MAP(CFlatToolBar, CToolBar)
	ON_WM_CONTEXTMENU()
  //{{AFX_MSG_MAP(CFlatToolBar)
  ON_WM_WINDOWPOSCHANGING()
	ON_WM_CREATE()
  ON_WM_PAINT()
  ON_WM_NCPAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

IMPLEMENT_DYNAMIC(CFlatToolBar,CToolBar)

BOOL CFlatToolBar::IsAvailable()
{
  return (SendMessage(TB_GETIMAGELIST) != 0);
}

void CFlatToolBar::ShowFlat(BOOL bFlat)
{
  if (bFlat)
  {
    BOOL bAvailable = (SendMessage(TB_GETIMAGELIST) != 0);
    if (bAvailable)
    {
      m_bFlat = TRUE;
      ModifyStyle(0, TBSTYLE_FLAT); // make it flat
      EraseNonClient();
      Invalidate();
    }
  }
  else
  {
    m_bFlat = FALSE;
    ModifyStyle(TBSTYLE_FLAT, 0); // revert to usual look
    EraseNonClient();
    Invalidate();
  }
}

// Because buttons are transparent, we need to repaint the background
void CFlatToolBar::RepaintBackground() 
{
 	CRect rc; GetWindowRect(&rc); // get rect for toolbar
	CWnd* pParent = GetParent();  // get parent windows
	pParent->ScreenToClient(&rc); // convert to parent coords
	pParent->InvalidateRect(&rc); // paint rectangle underneath
}

// Because buttons are transparaent, we need to repaint background if style changes
void CFlatToolBar::OnUpdateCmdUI(CFrameWnd* pTarget, BOOL bDisableIfNoHndler) 
{
	static CUIntArray styles;
	// save styles
	int nIndexMax = (int)DefWindowProc(TB_BUTTONCOUNT, 0, 0);
	int nIndex;
	for (nIndex = 0; nIndex < nIndexMax; nIndex++) 
	{
		UINT dwStyle = GetButtonStyle(nIndex);
		styles.SetAtGrow(nIndex,dwStyle);
	}
	// default processing
	CToolBar::OnUpdateCmdUI(pTarget,bDisableIfNoHndler);

	// make checked button appear pushed in
	for (nIndex = 0; nIndex < nIndexMax; nIndex++) 
	{
    UINT dwStyle = GetButtonStyle(nIndex); 
    if (dwStyle & TBBS_DISABLED) 
    { 
    // don't touch if disabled (avoids flicker) 
    } 
    else if (dwStyle & TBBS_CHECKBOX) 
    { 
      UINT dwStyleWas = dwStyle; 
      // if checked, make it pressed, else not pressed 
      if (dwStyle & TBBS_CHECKED) 
      { 
        dwStyle |= TBBS_PRESSED; 
      } 
      else if (!(styles[nIndex]&TBBS_CHECKED) && (styles[nIndex]&TBBS_PRESSED)) 
      { 
        dwStyle |= TBBS_PRESSED; 
      } 
      else 
      { 
        dwStyle &= ~TBBS_PRESSED; 
      } 

      // set new style if changed 
      if (dwStyleWas != dwStyle) 
      { 
        SetButtonStyle(nIndex,dwStyle); 
      } 
    } 
  }

	// check for changes to style (buttons presssed/released)
	for (nIndex = 0; nIndex < nIndexMax; nIndex++) 
	{
		UINT dwStyle = GetButtonStyle(nIndex);
		if (styles[nIndex] != dwStyle) 
		{
			//RepaintBackground();	// need to take care of button background
			//Invalidate();   			// repaint toolbar (not just this button)

      //PJ: Optimized code above to only redraw the button
			CRect rect;
			if (DefWindowProc(TB_GETITEMRECT, nIndex, (LPARAM)&rect))
				InvalidateRect(rect, TRUE);    // + erase the background

			break;
		}
	}
}

// Because buttons are transparent, we need to repaint background on size or move
void CFlatToolBar::OnWindowPosChanging(LPWINDOWPOS lpwp) 
{
	// default processing
	CToolBar::OnWindowPosChanging(lpwp);

	// repaint background if size or move
  RepaintBackground();
  PostMessage(WM_NCPAINT);
}

int CFlatToolBar::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CToolBar::OnCreate(lpCreateStruct) == -1)
		return -1;
	
  //Make the toolbar flatstyle
	ModifyStyle(0, TBSTYLE_FLAT);

	return 0;
}

// Draw the separators in the client area
void CFlatToolBar::DrawSeparators() 
{
	CClientDC dc(this); // get a dc for the client area
	DrawSeparators(&dc);     // draw the separators on it
}

// Draw the separators
void CFlatToolBar::DrawSeparators(CClientDC* pDC) 
{
	// horizontal vs vertical
	BOOL ishorz = (m_dwStyle & CBRS_ORIENT_HORZ) != 0;
	// get number of buttons
	int nIndexMax = (int)DefWindowProc(TB_BUTTONCOUNT, 0, 0);
	int nIndex;
	// try each button
	for (nIndex = 0; nIndex < nIndexMax; nIndex++) 
	{
		UINT dwStyle = GetButtonStyle(nIndex);
		UINT wStyle = LOWORD(dwStyle);
		// if it is a separator
		if (wStyle == TBBS_SEPARATOR) 
		{
			// get it's rectangle and width
			CRect rect;
			GetItemRect(nIndex,rect);
			// if small enough to be a true separator
			int w = rect.Width();
			if (w <= 8) 
			{
				if (ishorz) 
				{
					// draw the separator bar in the middle
					CRect rectbar = rect;
					int x = (rectbar.left+rectbar.right)/2;
					rectbar.left = x-1; rectbar.right = x+1;
					rectbar.top += 2; rectbar.bottom -= 2;
					pDC->Draw3dRect(rectbar,::GetSysColor(COLOR_3DSHADOW), ::GetSysColor(COLOR_3DHILIGHT));
				} 
				else 
				{
					// draw the separator bar in the middle
					CRect rectbar = rect;
					rectbar.left = rectbar.left - m_sizeButton.cx;
					rectbar.right = rectbar.left + m_sizeButton.cx;
					rectbar.top = rectbar.bottom+1;
					rectbar.bottom = rectbar.top+3;
					int y = (rectbar.top+rectbar.bottom)/2;
					rectbar.top = y-1; rectbar.bottom = y+1;
					rectbar.left += 2; rectbar.right -= 2;
					pDC->Draw3dRect(rectbar,::GetSysColor(COLOR_3DSHADOW), ::GetSysColor(COLOR_3DHILIGHT));
				}
			}
		}
	}
}

// Paint the toolbar
void CFlatToolBar::OnPaint() 
{
	// standard toolbar
	CToolBar::OnPaint();

	// plus separators if required
  if (m_bFlat)
	  DrawSeparators();
}

// Erase the non-client area (borders) - copied from MFC implementation
void CFlatToolBar::EraseNonClient() 
{
	// get window DC that is clipped to the non-client area
	CWindowDC dc(this);
	CRect rectClient;
	GetClientRect(rectClient);
	CRect rectWindow;
	GetWindowRect(rectWindow);
	ScreenToClient(rectWindow);
	rectClient.OffsetRect(-rectWindow.left, -rectWindow.top);
	dc.ExcludeClipRect(rectClient);
	
	// draw borders in non-client area
	rectWindow.OffsetRect(-rectWindow.left, -rectWindow.top);
	DrawBorders(&dc, rectWindow);
	
	// erase parts not drawn
	dc.IntersectClipRect(rectWindow);
	SendMessage(WM_ERASEBKGND, (WPARAM)dc.m_hDC);

  if (m_bFlat)
  	DrawGripper(&dc, rectWindow); // <-- my addition to draw gripper
}

// Draw the gripper at left or top
void CFlatToolBar::DrawGripper(CWindowDC *pDC, CRect& rectWindow) 
{
	CRect gripper = rectWindow;
	gripper.DeflateRect(1,1);
	if (m_dwStyle & CBRS_FLOATING) 
	{
		// no grippers
	} 
	else if (m_dwStyle & CBRS_ORIENT_HORZ) 
	{
		// gripper at left
    gripper.left++;
		gripper.right = gripper.left+3;
    gripper.top += 2; gripper.bottom -= 2;
		pDC->Draw3dRect(gripper,::GetSysColor(COLOR_3DHIGHLIGHT),	::GetSysColor(COLOR_3DSHADOW));
	} 
	else 
	{
		// gripper at top
    gripper.top++;
		gripper.bottom = gripper.top+3;
		gripper.left += 2; gripper.right -= 2;
		pDC->Draw3dRect(gripper,::GetSysColor(COLOR_3DHIGHLIGHT), ::GetSysColor(COLOR_3DSHADOW));
	}
}

// Paint the non-client area - copied from MFC implementatios
void CFlatToolBar:: OnNcPaint() 
{
	EraseNonClient();
}