www.pudn.com > mu_explorer.rar > CJFlatComboBox.cpp
// CJFlatComboBox.cpp : implementation file
// Copyright © 1998-1999 CodeJock.com, All Rights Reserved.
// See ReadMe.txt for TERMS OF USE.
//
/////////////////////////////////////////////////////////////////////////////
/****************************************************************************
*
* $Date: 10/30/99 6:01p $
* $Revision: 15 $
* $Archive: /CodeJock/CJLibrary/CJFlatComboBox.cpp $
*
* $History: CJFlatComboBox.cpp $
*
* ***************** Version 15 *****************
* User: Kirk Stowell Date: 10/30/99 Time: 6:01p
* Updated in $/CodeJock/CJLibrary
* Overrode OnEraseBkgnd(...) and re-wrote OnPaint() to handle flicker
* free drawing.
*
* ***************** Version 14 *****************
* User: Kirk Stowell Date: 10/30/99 Time: 2:14p
* Updated in $/CodeJock/CJLibrary
* Added COLORREF members to class to eliminate continuous calls to
* GetSysColor(...). Overrode OnSysColorChange() to re-initialize COLORREF
* variables.
*
* ***************** Version 13 *****************
* User: Kirk Stowell Date: 8/31/99 Time: 1:11a
* Updated in $/CodeJockey/CJLibrary
* Updated copyright and contact information.
*
* ***************** Version 12 *****************
* User: Kirk Stowell Date: 8/30/99 Time: 12:50a
* Updated in $/CodeJockey/CJLibrary
* Hiren Patel - Added ReleaseDC(pDC) when window is
* disabled.
*
* ***************** Version 11 *****************
* User: Kirk Stowell Date: 7/25/99 Time: 10:00p
* Updated in $/CodeJockey/CJLibrary
*
* ***************** Version 10 *****************
* User: Kirk Stowell Date: 7/25/99 Time: 12:30a
* Updated in $/CodeJockey/CJLibrary
*
* ***************** Version 9 *****************
* User: Kirk Stowell Date: 5/17/99 Time: 9:24p
* Updated in $/CodeJockey/CJ60Lib
* Gilberto Botaro [seafox@techno.com.br] - Added code for auto
* completion.
*
* ***************** Version 8 *****************
* User: Kirk Stowell Date: 5/03/99 Time: 10:44p
* Updated in $/CodeJockey/CJ60Lib
* Fixed code ommisions.
*
* ***************** Version 7 *****************
* User: Kirk Stowell Date: 5/03/99 Time: 8:42p
* Updated in $/CodeJockey/CJ60Lib
* Danilo Lax [Danilo_Lax@www2.alpeng.com] - The control is painted flat
* when the mouse leaves the box, even if the control has the focus, now
* checking for the focus in OnTimer(.
*
* Removed, unhandled msgs are processed by
* CComboBox::PreTranslateMessage(pMsg). Used reflected msgs
* BN_GETFOCUS/CBN_KILLFOCUS instead of WM_GETFOCUS/WM_KILLFOCUS.
*
* ::GetFocus() doesn't return CFlatComboBox::m_hWnd, even if the control
* has the focus (don't know why, maybe ::GetFocus() only returns the
* handle to the EditField part of the ComboBox), used flag m_bHasFocus
* instead.
*
* ***************** Version 6 *****************
* User: Kirk Stowell Date: 4/03/99 Time: 4:26p
* Updated in $/CodeJockey/CJ60Lib
* Added comments and cleaned up code.
*
* ***************** Version 5 *****************
* User: Kirk Stowell Date: 1/22/99 Time: 4:26p
* Updated in $/CodeJockey/CJ60Lib
* Fixed accelerator problem reported by YOSH YAMASHITA
* (yosh@muj.biglobe.ne.jp) with Matt Weagle's solution of overloading
* PreTranslateMessage().
*
* ***************** Version 4 *****************
* User: Kirk Stowell Date: 1/02/99 Time: 4:25p
* Updated in $/CodeJockey/CJ60Lib
* Renamed class from CJComboBox to CCJFlatComboBox, changed DRAWSTATE to
* enum, removed method Offset(), and replaced with a direct call to
* ::GetSystemMetrics().
*
* ***************** Version 3 *****************
* User: Kirk Stowell Date: 11/02/98 Time: 4:24p
* Updated in $/CodeJockey/CJ60Lib
* Added OnSetFocus(), OnKillFocus() and modified OnPaint() so the control
* remains beveled until it actually looses focus - (Vachik
* Hovhannissian).
*
* ***************** Version 2 *****************
* User: Kirk Stowell Date: 10/05/98 Time: 4:24p
* Updated in $/CodeJockey/CJ60Lib
* Fixed offset bug to use GetSystemMetrics(), instead of hard coded
* values -
* Todd Brannam (tbrannam@msn.com).
*
* ***************** Version 1 *****************
* User: Kirk Stowell Date: 10/02/98 Time: 4:23p
* Created in $/CodeJockey/CJ60Lib
* First release version.
*
***************************************************************************/
/////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "CJFlatComboBox.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CCJFlatComboBox
CCJFlatComboBox::CCJFlatComboBox()
{
m_bLBtnDown = FALSE;
m_bPainted = FALSE;
m_bHasFocus = FALSE;
m_bAutoComp = FALSE;
m_clrHilite = ::GetSysColor(COLOR_BTNHIGHLIGHT);
m_clrShadow = ::GetSysColor(COLOR_BTNSHADOW);
m_clrNormal = ::GetSysColor(COLOR_BTNFACE);
}
CCJFlatComboBox::~CCJFlatComboBox()
{
}
IMPLEMENT_DYNAMIC(CCJFlatComboBox, CComboBox)
BEGIN_MESSAGE_MAP(CCJFlatComboBox, CComboBox)
//{{AFX_MSG_MAP(CCJFlatComboBox)
ON_WM_MOUSEMOVE()
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_TIMER()
ON_WM_PAINT()
ON_CONTROL_REFLECT(CBN_SETFOCUS, OnSetFocus)
ON_CONTROL_REFLECT(CBN_KILLFOCUS, OnKillFocus)
ON_CONTROL_REFLECT(CBN_EDITUPDATE, OnEditUpdate)
ON_WM_SYSCOLORCHANGE()
ON_WM_ERASEBKGND()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CCJFlatComboBox message handlers
void CCJFlatComboBox::OnMouseMove(UINT nFlags, CPoint point)
{
SetTimer(1,10,NULL);
OnTimer(1);
CComboBox::OnMouseMove(nFlags, point);
}
void CCJFlatComboBox::OnLButtonDown(UINT nFlags, CPoint point)
{
m_bLBtnDown = TRUE;
CComboBox::OnLButtonDown(nFlags, point);
}
void CCJFlatComboBox::OnLButtonUp(UINT nFlags, CPoint point)
{
m_bLBtnDown = FALSE;
Invalidate();
CComboBox::OnLButtonUp(nFlags, point);
}
void CCJFlatComboBox::OnTimer(UINT nIDEvent)
{
UNUSED_ALWAYS(nIDEvent);
if (m_bLBtnDown==TRUE) { // OnLButtonDown, show PRESSED.
KillTimer (1);
if (m_bPainted == TRUE) {
DrawCombo(PRESSED, m_clrShadow, m_clrHilite);
m_bPainted = FALSE;
}
} else if (!PointInRect() && !m_bHasFocus) { // If mouse leaves, show flat.
KillTimer (1);
if (m_bPainted == TRUE) {
DrawCombo(NORMAL, m_clrNormal, m_clrNormal);
m_bPainted = FALSE;
}
} else { // On mouse over, show RAISED.
if (m_bPainted == TRUE) {
return;
} else {
m_bPainted = TRUE;
DrawCombo(RAISED, m_clrShadow, m_clrHilite);
}
}
}
void CCJFlatComboBox::OnPaint()
{
ModifyStyleEx (WS_EX_DLGMODALFRAME | WS_EX_CLIENTEDGE | WS_EX_STATICEDGE,
0, SWP_FRAMECHANGED);
CPaintDC dc(this);
// KStowell - Get the client rect.
CRect rcClient;
GetClientRect( &rcClient );
// KStowell - Create a memory device-context. This is done to help reduce
// screen flicker, since we will paint the entire control to the
// off screen device context first.
CDC memDC;
CBitmap bitmap;
memDC.CreateCompatibleDC(&dc);
bitmap.CreateCompatibleBitmap(&dc, rcClient.Width(), rcClient.Height());
CBitmap* pOldBitmap = memDC.SelectObject(&bitmap);
// let the control do its default drawing.
CWnd::DefWindowProc( WM_PAINT, (WPARAM)memDC.m_hDC, 0 );
if (PointInRect() || m_bHasFocus) {
DrawCombo(RAISED, m_clrShadow, m_clrHilite, &memDC);
} else {
DrawCombo(NORMAL, m_clrNormal, m_clrNormal, &memDC);
}
// KStowell - Copy the memory device context back into the original DC via BitBlt().
dc.BitBlt(rcClient.left, rcClient.top, rcClient.Width(), rcClient.Height(), &memDC, 0,0, SRCCOPY);
// KStowell - Cleanup resources.
memDC.SelectObject(pOldBitmap);
memDC.DeleteDC();
bitmap.DeleteObject();
}
void CCJFlatComboBox::DrawCombo(STATE eState, COLORREF clrTopLeft, COLORREF clrBottomRight, CDC* pDC)
{
CRect rcItem;
GetClientRect(&rcItem);
bool bRelease = false;
// if no device context was passed in, get the device context
// for the CWnd client area ...
if(pDC == NULL) {
pDC = GetDC();
bRelease = true;
}
// Cover up dark 3D shadow.
pDC->Draw3dRect(rcItem, clrTopLeft, clrBottomRight);
rcItem.DeflateRect(1,1);
if (!IsWindowEnabled()) {
pDC->Draw3dRect(rcItem, m_clrHilite, m_clrHilite);
} else {
pDC->Draw3dRect(rcItem, m_clrNormal, m_clrNormal);
}
// Cover up dark 3D shadow on drop arrow.
rcItem.DeflateRect(1,1);
rcItem.left = rcItem.right-::GetSystemMetrics(SM_CXHTHUMB);;
pDC->Draw3dRect(rcItem, m_clrNormal, m_clrNormal);
// Cover up NORMAL 3D shadow on drop arrow.
rcItem.DeflateRect(1,1);
pDC->Draw3dRect(rcItem, m_clrNormal, m_clrNormal);
if (!IsWindowEnabled()) {
if(bRelease == true) {
ReleaseDC(pDC);
}
return;
}
rcItem.InflateRect(0,1);
switch (eState)
{
case NORMAL:
pDC->Draw3dRect(rcItem, m_clrHilite, m_clrHilite);
rcItem.left -= 1;
pDC->Draw3dRect(rcItem, m_clrHilite, m_clrHilite);
break;
case RAISED:
pDC->Draw3dRect(rcItem, m_clrHilite, m_clrShadow);
break;
case PRESSED:
rcItem.OffsetRect(1,1);
pDC->Draw3dRect(rcItem, m_clrShadow, m_clrHilite);
break;
}
// KStowell - cleanup.
if(bRelease == true) {
ReleaseDC(pDC);
}
}
void CCJFlatComboBox::OnSetFocus()
{
m_bHasFocus = TRUE;
DrawCombo(RAISED, m_clrShadow, m_clrHilite);
}
void CCJFlatComboBox::OnKillFocus()
{
m_bHasFocus = FALSE;
DrawCombo(NORMAL, m_clrNormal, m_clrNormal);
}
BOOL CCJFlatComboBox::PreTranslateMessage(MSG* pMsg)
{
if(IsWin95()) // alexander Golde [alex@viona.de]
{
// Make sure that the keystrokes continue to the appropriate handlers
if (pMsg->message == WM_KEYDOWN || pMsg->message==WM_KEYUP)
{
::TranslateMessage(pMsg);
::DispatchMessage(pMsg);
return TRUE;
}
// Catch the Alt key so we don't choke if focus
// is going to an owner drawn button
if (pMsg->message == WM_SYSCHAR)
return TRUE;
}
return CComboBox::PreTranslateMessage(pMsg);
}
void CCJFlatComboBox::OnEditUpdate()
{
// if we are not to auto update the text, get outta here
if (!m_bAutoComp)
return;
// Get the text in the edit box
CString str;
GetWindowText(str);
int nLength = str.GetLength();
// Currently selected range
DWORD dwCurSel = GetEditSel();
WORD dStart = LOWORD(dwCurSel);
WORD dEnd = HIWORD(dwCurSel);
// Search for, and select in, and string in the combo box that is prefixed
// by the text in the edit box
if (SelectString(-1, str) == CB_ERR)
{
SetWindowText(str); // No text selected, so restore what was there before
if (dwCurSel != CB_ERR)
SetEditSel(dStart, dEnd); //restore cursor postion
}
// Set the text selection as the additional text that we have added
if (dEnd < nLength && dwCurSel != CB_ERR)
SetEditSel(dStart, dEnd);
else
SetEditSel(nLength, -1);
}
BOOL CCJFlatComboBox::IsWin95()
{
OSVERSIONINFO info;
info.dwOSVersionInfoSize = sizeof(info);
GetVersionEx( &info );
return ((VER_PLATFORM_WIN32_WINDOWS == info.dwPlatformId) && (info.dwMinorVersion == 0));
}
void CCJFlatComboBox::OnSysColorChange()
{
CComboBox::OnSysColorChange();
m_clrHilite = ::GetSysColor(COLOR_BTNHIGHLIGHT);
m_clrShadow = ::GetSysColor(COLOR_BTNSHADOW);
m_clrNormal = ::GetSysColor(COLOR_BTNFACE);
}
BOOL CCJFlatComboBox::OnEraseBkgnd(CDC* pDC)
{
// KStowell - overridden for flicker-free drawing.
UNUSED_ALWAYS(pDC);
return TRUE;
}