src/Utils/MiscUI/HintListCtrl.cpp

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2003-2008, 2013, 2015 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19
  20 #include "stdafx.h"
  21 #include "MyMemDC.h"
  22 #include "HintListCtrl.h"
  23
  24 CHintListCtrl::CHintListCtrl() : CListCtrl()
  25 {
  26 }
  27
  28 CHintListCtrl::~CHintListCtrl()
  29 {
  30 }
  31
  32 void CHintListCtrl::ShowText(const CString& sText, bool forceupdate /* = false*/)
  33 {
  34         m_sText = sText;
  35         Invalidate();
  36         if (forceupdate)
  37                 UpdateWindow();
  38 }
  39
  40 void CHintListCtrl::ClearText()
  41 {
  42         m_sText.Empty();
  43         Invalidate();
  44 }
  45
  46 IMPLEMENT_DYNAMIC(CHintListCtrl, CListCtrl)
  47
  48 BEGIN_MESSAGE_MAP(CHintListCtrl, CListCtrl)
  49         ON_WM_PAINT()
  50 END_MESSAGE_MAP()
  51
  52 void CHintListCtrl::OnPaint()
  53 {
  54         LRESULT defres = Default();
  55         if (!m_sText.IsEmpty())
  56         {
  57                 COLORREF clrText = ::GetSysColor(COLOR_WINDOWTEXT);
  58                 COLORREF clrTextBk;
  59                 if (IsWindowEnabled())
  60                         clrTextBk = ::GetSysColor(COLOR_WINDOW);
  61                 else
  62                         clrTextBk = ::GetSysColor(COLOR_3DFACE);
  63
  64                 CRect rc;
  65                 GetClientRect(&rc);
  66                 bool bIsEmpty = false;
  67                 CListCtrl * pListCtrl = dynamic_cast<CListCtrl*>(this);
  68                 if (pListCtrl)
  69                 {
  70                         CHeaderCtrl* pHC;
  71                         pHC = pListCtrl->GetHeaderCtrl();
  72                         if (pHC != NULL)
  73                         {
  74                                 CRect rcH;
  75                                 rcH.SetRectEmpty();
  76                                 pHC->GetItemRect(0, &rcH);
  77                                 rc.top += rcH.bottom;
  78                         }
  79                         bIsEmpty = pListCtrl->GetItemCount() == 0;
  80                 }
  81                 CDC* pDC = GetDC();
  82                 {
  83                         CMyMemDC memDC(pDC, &rc);
  84
  85                         memDC.SetTextColor(clrText);
  86                         memDC.SetBkColor(clrTextBk);
  87                         if (bIsEmpty)
  88                                 memDC.BitBlt(rc.left, rc.top, rc.Width(), rc.Height(), pDC, rc.left, rc.top, SRCCOPY);
  89                         else
  90                                 memDC.FillSolidRect(rc, clrTextBk);
  91                         rc.top += 10;
  92                         CGdiObject * oldfont = memDC.SelectStockObject(DEFAULT_GUI_FONT);
  93                         memDC.DrawText(m_sText, rc, DT_CENTER | DT_VCENTER |
  94                                 DT_WORDBREAK | DT_NOPREFIX | DT_NOCLIP);
  95                         memDC.SelectObject(oldfont);
  96                 }
  97                 ReleaseDC(pDC);
  98         }
  99         if (defres)
 100         {
 101                 // the Default() call did not process the WM_PAINT message!
 102                 // Validate the update region ourselves to avoid
 103                 // an endless loop repainting
 104                 CRect rc;
 105                 GetUpdateRect(&rc, FALSE);
 106                 if (!rc.IsRectEmpty())
 107                         ValidateRect(rc);
 108         }
 109 }