src/Utils/MiscUI/LinkControl.h

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2009, 2012 - 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 #pragma once
  20 #include <Windows.h>
  21
  22 class CLinkControl
  23 {
  24 public:
  25         CLinkControl(void);
  26         virtual ~CLinkControl(void);
  27
  28         bool ConvertStaticToLink(HWND hwndCtl);
  29         bool ConvertStaticToLink(HWND hwndParent, UINT uiCtlId);
  30
  31         static const UINT LK_LINKITEMCLICKED;
  32
  33 protected:
  34 private:
  35         static HCURSOR  g_hLinkCursor;                  // Cursor for hyperlink
  36         static HFONT    g_UnderlineFont;                // Font for underline display
  37         static HFONT    g_NormalFont;                   // Font for default display
  38         static int      g_counter;                      // Global resources user counter
  39         bool            m_bOverControl;                 // cursor over control?
  40         bool            m_bMouseDownPressed;            // was WM_LBUTTONDOWN received?
  41         HFONT           m_StdFont;                      // Standard font
  42         WNDPROC         m_pfnOrigCtlProc;
  43
  44         void createUnderlineFont(void);
  45         static void createLinkCursor(void);
  46         void createGlobalResources(void)
  47         {
  48                 createUnderlineFont();
  49                 createLinkCursor();
  50         }
  51         static void destroyGlobalResources(void)
  52         {
  53                 /*
  54                  * No need to call DestroyCursor() for cursors acquired through
  55                  * LoadCursor().
  56                  */
  57                 g_hLinkCursor   = NULL;
  58                 DeleteObject(g_UnderlineFont);
  59                 g_UnderlineFont = NULL;
  60         }
  61
  62         static void DrawFocusRect(HWND hwnd);
  63         static LRESULT CALLBACK _HyperlinkParentProc(HWND hwnd, UINT message,
  64                                                                                                  WPARAM wParam, LPARAM lParam);
  65         static LRESULT CALLBACK _HyperlinkProc(HWND hwnd, UINT message,
  66                                                                                    WPARAM wParam, LPARAM lParam);
  67 };
  68