reactos/win32ss/user/user32/controls/icontitle.c

   1 /*
   2  * Icontitle window class.
   3  *
   4  * Copyright 1997 Alex Korobka
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <user32.h>
  22
  23 #include <wine/debug.h>
  24 WINE_DEFAULT_DEBUG_CHANNEL(user32);
  25
  26 static BOOL bMultiLineTitle;
  27 static HFONT hIconTitleFont;
  28
  29 /*********************************************************************
  30  * icon title class descriptor
  31  */
  32 const struct builtin_class_descr ICONTITLE_builtin_class =
  33 {
  34     WC_ICONTITLE,     /* name */
  35     0,                /* style */
  36     NULL,             /* procA (winproc is Unicode only) */
  37     IconTitleWndProc, /* procW */
  38     0,                /* extra */
  39     IDC_ARROW,        /* cursor */
  40     0                 /* brush */
  41 };
  42
  43
  44
  45 #ifndef __REACTOS__
  46 /***********************************************************************
  47  *           ICONTITLE_Create
  48  */
  49 HWND ICONTITLE_Create( HWND owner )
  50 {
  51     HWND hWnd;
  52     HINSTANCE instance = (HINSTANCE)GetWindowLongPtrA( owner, GWLP_HINSTANCE );
  53     LONG style = WS_CLIPSIBLINGS;
  54
  55     if (!IsWindowEnabled(owner)) style |= WS_DISABLED;
  56     if( GetWindowLongPtrA( owner, GWL_STYLE ) & WS_CHILD )
  57         hWnd = CreateWindowExA( 0, (LPCSTR)ICONTITLE_CLASS_ATOM, NULL,
  58                                 style | WS_CHILD, 0, 0, 1, 1,
  59                                 GetParent(owner), 0, instance, NULL );
  60     else
  61         hWnd = CreateWindowExA( 0, (LPCSTR)ICONTITLE_CLASS_ATOM, NULL,
  62                                 style, 0, 0, 1, 1,
  63                                 owner, 0, instance, NULL );
  64     WIN_SetOwner( hWnd, owner );  /* MDI depends on this */
  65     SetWindowLongPtrW( hWnd, GWL_STYLE,
  66                        GetWindowLongPtrW( hWnd, GWL_STYLE ) & ~(WS_CAPTION | WS_BORDER) );
  67     return hWnd;
  68 }
  69 #endif
  70
  71 /***********************************************************************
  72  *           ICONTITLE_SetTitlePos
  73  */
  74 static BOOL ICONTITLE_SetTitlePos( HWND hwnd, HWND owner )
  75 {
  76     static const WCHAR emptyTitleText[] = {'<','.','.','.','>',0};
  77     WCHAR str[80];
  78     HDC hDC;
  79     HFONT hPrevFont;
  80     RECT rect;
  81     INT cx, cy;
  82     POINT pt;
  83
  84     int length = GetWindowTextW( owner, str, sizeof(str)/sizeof(WCHAR) );
  85
  86     while (length && str[length - 1] == ' ') /* remove trailing spaces */
  87         str[--length] = 0;
  88
  89     if( !length )
  90     {
  91         strcpyW( str, emptyTitleText );
  92         length = strlenW( str );
  93     }
  94
  95     if (!(hDC = GetDC( hwnd ))) return FALSE;
  96
  97     hPrevFont = SelectObject( hDC, hIconTitleFont );
  98
  99     SetRect( &rect, 0, 0, GetSystemMetrics(SM_CXICONSPACING) -
 100              GetSystemMetrics(SM_CXBORDER) * 2,
 101              GetSystemMetrics(SM_CYBORDER) * 2 );
 102
 103     DrawTextW( hDC, str, length, &rect, DT_CALCRECT | DT_CENTER | DT_NOPREFIX | DT_WORDBREAK |
 104                (( bMultiLineTitle ) ? 0 : DT_SINGLELINE) );
 105
 106     SelectObject( hDC, hPrevFont );
 107     ReleaseDC( hwnd, hDC );
 108
 109     cx = rect.right - rect.left +  4 * GetSystemMetrics(SM_CXBORDER);
 110     cy = rect.bottom - rect.top;
 111
 112     pt.x = (GetSystemMetrics(SM_CXICON) - cx) / 2;
 113     pt.y = GetSystemMetrics(SM_CYICON);
 114
 115     /* point is relative to owner, make it relative to parent */
 116     MapWindowPoints( owner, GetParent(hwnd), &pt, 1 );
 117
 118     SetWindowPos( hwnd, owner, pt.x, pt.y, cx, cy, SWP_NOACTIVATE );
 119     return TRUE;
 120 }
 121
 122 /***********************************************************************
 123  *           ICONTITLE_Paint
 124  */
 125 static BOOL ICONTITLE_Paint( HWND hwnd, HWND owner, HDC hDC, BOOL bActive )
 126 {
 127     RECT rect;
 128     HFONT hPrevFont;
 129     HBRUSH hBrush = 0;
 130     COLORREF textColor = 0;
 131
 132     if( bActive )
 133     {
 134         hBrush = GetSysColorBrush(COLOR_ACTIVECAPTION);
 135         textColor = GetSysColor(COLOR_CAPTIONTEXT);
 136     }
 137     else
 138     {
 139         if( GetWindowLongPtrA( hwnd, GWL_STYLE ) & WS_CHILD )
 140         {
 141             hBrush = (HBRUSH) GetClassLongPtrW(hwnd, GCLP_HBRBACKGROUND);
 142             if( hBrush )
 143             {
 144                 INT level;
 145                 LOGBRUSH logBrush;
 146                 GetObjectA( hBrush, sizeof(logBrush), &logBrush );
 147                 level = GetRValue(logBrush.lbColor) +
 148                            GetGValue(logBrush.lbColor) +
 149                               GetBValue(logBrush.lbColor);
 150                 if( level < (0x7F * 3) )
 151                     textColor = RGB( 0xFF, 0xFF, 0xFF );
 152             }
 153             else
 154                 hBrush = GetStockObject( WHITE_BRUSH );
 155         }
 156         else
 157         {
 158             hBrush = GetStockObject( BLACK_BRUSH );
 159             textColor = RGB( 0xFF, 0xFF, 0xFF );
 160         }
 161     }
 162
 163     GetClientRect( hwnd, &rect );
 164     DPtoLP( hDC, (LPPOINT)&rect, 2 );
 165     FillRect( hDC, &rect, hBrush );
 166
 167     hPrevFont = SelectObject( hDC, hIconTitleFont );
 168     if( hPrevFont )
 169     {
 170         WCHAR buffer[80];
 171
 172         INT length = GetWindowTextW( owner, buffer, sizeof(buffer)/sizeof(buffer[0]) );
 173         SetTextColor( hDC, textColor );
 174         SetBkMode( hDC, TRANSPARENT );
 175
 176         DrawTextW( hDC, buffer, length, &rect, DT_CENTER | DT_NOPREFIX |
 177                    DT_WORDBREAK | ((bMultiLineTitle) ? 0 : DT_SINGLELINE) );
 178
 179         SelectObject( hDC, hPrevFont );
 180     }
 181     return (hPrevFont != 0);
 182 }
 183
 184 /***********************************************************************
 185  *           IconTitleWndProc
 186  */
 187 LRESULT WINAPI IconTitleWndProc( HWND hWnd, UINT msg,
 188                                  WPARAM wParam, LPARAM lParam )
 189 {
 190     HWND owner = GetWindow( hWnd, GW_OWNER );
 191
 192     if (!IsWindow(hWnd)) return 0;
 193
 194     switch( msg )
 195     {
 196         case WM_CREATE:
 197             if (!hIconTitleFont)
 198             {
 199                 LOGFONTA logFont;
 200                 SystemParametersInfoA( SPI_GETICONTITLELOGFONT, 0, &logFont, 0 );
 201                 SystemParametersInfoA( SPI_GETICONTITLEWRAP, 0, &bMultiLineTitle, 0 );
 202                 hIconTitleFont = CreateFontIndirectA( &logFont );
 203             }
 204             return (hIconTitleFont ? 0 : -1);
 205         case WM_NCHITTEST:
 206              return HTCAPTION;
 207         case WM_NCMOUSEMOVE:
 208         case WM_NCLBUTTONDBLCLK:
 209              return SendMessageW( owner, msg, wParam, lParam );
 210         case WM_ACTIVATE:
 211              if( wParam ) SetActiveWindow( owner );
 212              return 0;
 213         case WM_CLOSE:
 214              return 0;
 215         case WM_SHOWWINDOW:
 216             if (wParam) ICONTITLE_SetTitlePos( hWnd, owner );
 217              return 0;
 218         case WM_ERASEBKGND:
 219             if( GetWindowLongPtrW( owner, GWL_STYLE ) & WS_CHILD )
 220                 lParam = SendMessageW( owner, WM_ISACTIVEICON, 0, 0 );
 221             else
 222                 lParam = (owner == GetActiveWindow());
 223             if( ICONTITLE_Paint( hWnd, owner, (HDC)wParam, (BOOL)lParam ) )
 224                 ValidateRect( hWnd, NULL );
 225             return 1;
 226     }
 227     return DefWindowProcW( hWnd, msg, wParam, lParam );
 228 }