Utils/MiscUI/BaseWindow.cpp

   1 // TortoiseSVN - a Windows shell extension for easy version control\r
   2 \r
   3 // Copyright (C) 2003-2008 - TortoiseSVN\r
   4 \r
   5 // This program is free software; you can redistribute it and/or\r
   6 // modify it under the terms of the GNU General Public License\r
   7 // as published by the Free Software Foundation; either version 2\r
   8 // of the License, or (at your option) any later version.\r
   9 \r
  10 // This program is distributed in the hope that it will be useful,\r
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  13 // GNU General Public License for more details.\r
  14 \r
  15 // You should have received a copy of the GNU General Public License\r
  16 // along with this program; if not, write to the Free Software Foundation,\r
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\r
  18 //\r
  19 #include "stdafx.h"\r
  20 #include "BaseWindow.h"\r
  21 \r
  22 \r
  23 ResString::ResString (HINSTANCE hInst, int resId)\r
  24 {\r
  25         if (!::LoadString (hInst, resId, _buf, MAX_RESSTRING + 1))\r
  26         {\r
  27                 SecureZeroMemory(_buf, sizeof(_buf));\r
  28         }\r
  29 }\r
  30 \r
  31 \r
  32 bool CWindow::RegisterWindow(UINT style, HICON hIcon, HCURSOR hCursor, HBRUSH hbrBackground, \r
  33                                                                         LPCTSTR lpszMenuName, LPCTSTR lpszClassName, HICON hIconSm)\r
  34 {\r
  35         WNDCLASSEX wcx; \r
  36  \r
  37         // Fill in the window class structure with default parameters \r
  38  \r
  39         wcx.cbSize = sizeof(WNDCLASSEX);                                // size of structure \r
  40         wcx.style = style;                                                              // redraw if size changes \r
  41         wcx.lpfnWndProc = CWindow::stWinMsgHandler;             // points to window procedure \r
  42         wcx.cbClsExtra = 0;                                                             // no extra class memory \r
  43         wcx.cbWndExtra = 0;                                                             // no extra window memory \r
  44         wcx.hInstance = hResource;                                              // handle to instance \r
  45         wcx.hIcon = hIcon;                                                              // predefined app. icon \r
  46         wcx.hCursor = hCursor;                                                  // predefined arrow \r
  47         wcx.hbrBackground = hbrBackground;                              // white background brush \r
  48         wcx.lpszMenuName = lpszMenuName;                                // name of menu resource \r
  49         wcx.lpszClassName = lpszClassName;                              // name of window class \r
  50         wcx.hIconSm = hIconSm;                                                  // small class icon \r
  51  \r
  52         // Register the window class. \r
  53         return RegisterWindow(&wcx); \r
  54 }\r
  55 \r
  56 bool CWindow::RegisterWindow(CONST WNDCLASSEX* wcx)\r
  57 {\r
  58         // Register the window class. \r
  59         sClassName = std::wstring(wcx->lpszClassName);\r
  60 \r
  61         if (RegisterClassEx(wcx) == 0)\r
  62                 return FALSE;\r
  63         else\r
  64                 return TRUE;\r
  65 }\r
  66 \r
  67 LRESULT CALLBACK CWindow::stWinMsgHandler(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)\r
  68 {\r
  69         CWindow* pWnd;\r
  70 \r
  71         if (uMsg == WM_NCCREATE)\r
  72         {\r
  73                 // get the pointer to the window from lpCreateParams which was set in CreateWindow\r
  74                 SetWindowLongPtr(hwnd, GWLP_USERDATA, (long)((LPCREATESTRUCT(lParam))->lpCreateParams));\r
  75         }\r
  76 \r
  77         // get the pointer to the window\r
  78         pWnd = GetObjectFromWindow(hwnd);\r
  79 \r
  80         // if we have the pointer, go to the message handler of the window\r
  81         // else, use DefWindowProc\r
  82         if (pWnd)\r
  83                 return pWnd->WinMsgHandler(hwnd, uMsg, wParam, lParam);\r
  84         else\r
  85                 return DefWindowProc(hwnd, uMsg, wParam, lParam);\r
  86 }\r
  87 \r
  88 bool CWindow::Create()\r
  89 { \r
  90         // Create the window\r
  91         RECT rect;\r
  92 \r
  93         rect.top = 0;\r
  94         rect.left = 0;\r
  95         rect.right = 600;\r
  96         rect.bottom = 400;\r
  97 \r
  98         return Create(WS_OVERLAPPEDWINDOW | WS_VISIBLE, NULL, &rect);\r
  99 }\r
 100 \r
 101 bool CWindow::Create(DWORD dwStyles, HWND hParent /* = NULL */, RECT* rect /* = NULL */)\r
 102 { \r
 103         return CreateEx(0, dwStyles, hParent, rect);    \r
 104 }\r
 105 \r
 106 bool CWindow::CreateEx(DWORD dwExStyles, DWORD dwStyles, HWND hParent /* = NULL */, RECT* rect /* = NULL */)\r
 107 {\r
 108         // send the this pointer as the window creation parameter\r
 109         if (rect == NULL)\r
 110                 m_hwnd = CreateWindowEx(dwExStyles, sClassName.c_str(), sWindowTitle.c_str(), dwStyles, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, hParent, NULL, hResource, (void *)this);\r
 111         else\r
 112         {\r
 113                 m_hwnd = CreateWindowEx(dwExStyles, sClassName.c_str(), sWindowTitle.c_str(), dwStyles, rect->left, rect->top, \r
 114                         rect->right - rect->left, rect->bottom - rect->top, hParent, NULL, hResource, \r
 115                         (void *)this);\r
 116         }\r
 117         return (m_hwnd != NULL);\r
 118 }\r
 119 \r
 120 void CWindow::SetTransparency(BYTE alpha, COLORREF color /* = 0xFF000000 */)\r
 121 {\r
 122         if (alpha == 255)\r
 123         {\r
 124                 LONG_PTR exstyle = GetWindowLongPtr(*this, GWL_EXSTYLE);\r
 125                 exstyle &= ~WS_EX_LAYERED;\r
 126                 SetWindowLongPtr(*this, GWL_EXSTYLE, exstyle);\r
 127         }\r
 128         else\r
 129         {\r
 130                 LONG_PTR exstyle = GetWindowLongPtr(*this, GWL_EXSTYLE);\r
 131                 exstyle |= WS_EX_LAYERED;\r
 132                 SetWindowLongPtr(*this, GWL_EXSTYLE, exstyle);\r
 133         }\r
 134         COLORREF col = color;\r
 135         DWORD flags = LWA_ALPHA;\r
 136         if (col & 0xFF000000)\r
 137         {\r
 138                 col = RGB(255, 255, 255);\r
 139                 flags = LWA_ALPHA;\r
 140         }\r
 141         else\r
 142         {\r
 143                 flags = LWA_COLORKEY;\r
 144         }\r
 145         SetLayeredWindowAttributes(*this, col, alpha, flags);\r
 146 }\r