DatabaseExplorer/ColorHeaderCtrl.cpp at master · flaviu22/DatabaseExplorer · GitHub

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// ColorHeaderCtrl.cpp : implementation file
//

#include"pch.h"
#include"ColorHeaderCtrl.h"

#ifdef _DEBUG
#definenewDEBUG_NEW
#undef THIS_FILE
staticcharTHIS_FILE[] = __FILE__;
#endif

// CColorHeaderCtrl

IMPLEMENT_DYNAMIC(CColorHeaderCtrl, CHeaderCtrl)

CColorHeaderCtrl::CColorHeaderCtrl()
	: m_crText(GetSysColor(COLOR_WINDOWTEXT))
	, m_crBackground(GetSysColor(COLOR_WINDOW))
{
	m_crBackgroundHot = m_crBackgroundPressed = m_crBackground;
	m_crBackgroundHotTheme = m_crBackgroundPressedTheme = m_crBackgroundTheme = m_crBackground;
}

BEGIN_MESSAGE_MAP(CColorHeaderCtrl, CHeaderCtrl)
//{{AFX_MSG_MAP(CColorHeaderCtrl)
ON_NOTIFY_REFLECT(NM_CUSTOMDRAW, &CColorHeaderCtrl::OnNMCustomdraw)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

// CColorHeaderCtrl message handlers

void CColorHeaderCtrl::UpdateCustomDrawFlag()
{
if (GetSysColor(COLOR_WINDOW) != m_crBackground ||
GetSysColor(COLOR_WINDOWTEXT) != m_crText)
 m_bCustomDraw = TRUE;
else
 m_bCustomDraw = FALSE;
}

voidCColorHeaderCtrl::OnNMCustomdraw(NMHDR* pNMHDR, LRESULT* pResult)
{
if (!m_bCustomDraw)
return;

LPNMLVCUSTOMDRAW pNMCD = reinterpret_cast<LPNMLVCUSTOMDRAW>(pNMHDR);
// TODO: Add your control notification handler code here

	*pResult = CDRF_DODEFAULT;

switch (pNMCD->nmcd.dwDrawStage)
	{
caseCDDS_PREPAINT:
 *pResult = CDRF_NOTIFYITEMDRAW | CDRF_NOTIFYPOSTPAINT;
break;
caseCDDS_ITEMPREPAINT:
 {
staticHFONT hNewFont = NULL;
if (!hNewFont)
 {
LOGFONT lf;
GetFont()->GetLogFont(&lf);
 lf.lfQuality = NONANTIALIASED_QUALITY;
 hNewFont = ::CreateFontIndirect(&lf);
 }
SetTextColor(pNMCD->nmcd.hdc, m_crText);
SelectObject(pNMCD->nmcd.hdc, hNewFont);
 *pResult = CDRF_NEWFONT;
 }
break;
caseCDDS_POSTPAINT:
 CRect rect;
GetClientRect(&rect);

CDC MemDC;
 CBitmap bitmap;
CDC* pDC = CDC::FromHandle(pNMCD->nmcd.hdc);
 MemDC.CreateCompatibleDC(pDC);
if (bitmap.CreateCompatibleBitmap(pDC, rect.Width(), rect.Height()))
 {
 CBitmap* pOldBitmap = static_cast<CBitmap*>(MemDC.SelectObject(&bitmap));
if (!m_bPrint)
 {
 m_bPrint = TRUE;
::SendMessage(pNMCD->nmcd.hdr.hwndFrom, WM_PRINTCLIENT, (WPARAM)MemDC.GetSafeHdc(), PRF_CLIENT);
 CBrush brush;
 brush.CreateSolidBrush(m_crBackground);
 CBrush* pOldBrush = static_cast<CBrush*>(pDC->SelectObject(&brush));
 pDC->FillRect(&rect, &brush);
 pDC->SelectObject(pOldBrush);
DeleteObject(&brush);

constHTHEME hTheme = OpenThemeData(pNMCD->nmcd.hdr.hwndFrom, L"HEADER");
if (hTheme)
 {
 CBitmap bmp;
 bmp.CreateCompatibleBitmap(pDC, rect.Width(), rect.Height());

CDC dc;
 dc.CreateCompatibleDC(pDC);

 CBitmap* pOldBitmapTest = static_cast<CBitmap*>(dc.SelectObject(&bmp));
DrawThemeBackground(hTheme, dc.GetSafeHdc(), HP_HEADERITEM, HIS_NORMAL, &rect, NULL);
 m_crBackgroundTheme = dc.GetPixel(1, 1);
DrawThemeBackground(hTheme, dc.GetSafeHdc(), HP_HEADERITEM, HIS_HOT, &rect, NULL);
 m_crBackgroundHotTheme = dc.GetPixel(1, 1);
DrawThemeBackground(hTheme, dc.GetSafeHdc(), HP_HEADERITEM, HIS_PRESSED, &rect, NULL);
 m_crBackgroundPressedTheme = dc.GetPixel(1, 1);
 dc.SelectObject(pOldBitmapTest);
DeleteObject(bmp);
DeleteDC(dc);
CloseThemeData(hTheme);
 }

CDC HotDC, PressedDC;
 HotDC.CreateCompatibleDC(pDC);
 PressedDC.CreateCompatibleDC(pDC);
 CBitmap bitmapHot, bitmapPressed;
 bitmapHot.CreateCompatibleBitmap(pDC, rect.Width(), rect.Height());
 CBitmap* pOldBitmapHot = static_cast<CBitmap*>(HotDC.SelectObject(&bitmapHot));
 bitmapPressed.CreateCompatibleBitmap(pDC, rect.Width(), rect.Height());
 CBitmap* pOldBitmapPressed = static_cast<CBitmap*>(PressedDC.SelectObject(&bitmapPressed));
// default color => custom
 pDC->TransparentBlt(0, 0, rect.Width(), rect.Height(), &MemDC, 0, 0, rect.Width(), rect.Height(), m_crBackgroundTheme);
// Copy pDC to 2 temporary DC
 HotDC.BitBlt(0, 0, rect.Width(), rect.Height(), pDC, 0, 0, SRCCOPY);
 PressedDC.BitBlt(0, 0, rect.Width(), rect.Height(), pDC, 0, 0, SRCCOPY);
// hot brush in PressedDC
 CBrush brushHot;
 brushHot.CreateSolidBrush(m_crBackgroundHot);
 CBrush* pOldBrushHot = static_cast<CBrush*>(PressedDC.SelectObject(&brushHot));
 PressedDC.FillRect(&rect, &brushHot);
 PressedDC.SelectObject(pOldBrushHot);
DeleteObject(brushHot);
// Hot color (Light Blue) => Pressed
 PressedDC.TransparentBlt(0, 0, rect.Width(), rect.Height(), &HotDC, 0, 0, rect.Width(), rect.Height(), m_crBackgroundHotTheme);
// Pressed brush in pDC
 CBrush brushPressed;
 brushPressed.CreateSolidBrush(m_crBackgroundPressed);
 CBrush* pOldBrushPressed = static_cast<CBrush*>(pDC->SelectObject(&brushPressed));
 pDC->FillRect(&rect, &brushPressed);
 pDC->SelectObject(pOldBrushPressed);
DeleteObject(brushPressed);
// Hot => Pressed
 pDC->TransparentBlt(0, 0, rect.Width(), rect.Height(), &PressedDC, 0, 0, rect.Width(), rect.Height(), m_crBackgroundPressedTheme);

 HotDC.SelectObject(pOldBitmapHot);
DeleteObject(bitmapHot);
DeleteDC(HotDC);

 PressedDC.SelectObject(pOldBitmapPressed);
DeleteObject(bitmapPressed);
DeleteDC(PressedDC);
 }
else
 {
 m_bPrint = FALSE;
 }
 MemDC.SelectObject(pOldBitmap);
DeleteObject(bitmap);
 }
DeleteDC(MemDC);
break;
	}
}