dll/win32/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <user32.h>
  22
  23 #include <wine/debug.h>
  24
  25 #ifdef __REACTOS__
  26 #define MAKEINTATOMW(atom)  ((LPCWSTR)((ULONG_PTR)((WORD)(atom))))
  27 #define ICONTITLE_CLASS_ATOM MAKEINTATOMW(32772)
  28 #endif
  29
  30 static BOOL bMultiLineTitle;
  31 static HFONT hIconTitleFont;
  32
  33 static LRESULT WINAPI IconTitleWndProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam );
  34
  35 /*********************************************************************
  36  * icon title class descriptor
  37  */
  38 const struct builtin_class_descr ICONTITLE_builtin_class =
  39 {
  40 #ifdef __REACTOS__
  41     ICONTITLE_CLASS_ATOM, /* name */
  42     0,                    /* style */
  43     IconTitleWndProc,     /* procW */
  44     NULL,                 /* procA (winproc is Unicode only) */
  45     0,                    /* extra */
  46     IDC_ARROW,            /* cursor */
  47     0                     /* brush */
  48 #else
  49     ICONTITLE_CLASS_ATOM, /* name */
  50     0,                    /* style */
  51     NULL,                 /* procA (winproc is Unicode only) */
  52     IconTitleWndProc,     /* procW */
  53     0,                    /* extra */
  54     IDC_ARROW,            /* cursor */
  55     0                     /* brush */
  56 #endif
  57 };
  58
  59
  60
  61 #ifndef __REACTOS__
  62 /***********************************************************************
  63  *           ICONTITLE_Create
  64  */
  65 HWND ICONTITLE_Create( HWND owner )
  66 {
  67     HWND hWnd;
  68     HINSTANCE instance = (HINSTANCE)GetWindowLongPtrA( owner, GWLP_HINSTANCE );
  69     LONG style = WS_CLIPSIBLINGS;
  70
  71     if (!IsWindowEnabled(owner)) style |= WS_DISABLED;
  72     if( GetWindowLongA( owner, GWL_STYLE ) & WS_CHILD )
  73         hWnd = CreateWindowExA( 0, ICONTITLE_CLASS_ATOM, NULL,
  74                                 style | WS_CHILD, 0, 0, 1, 1,
  75                                 GetParent(owner), 0, instance, NULL );
  76     else
  77         hWnd = CreateWindowExA( 0, ICONTITLE_CLASS_ATOM, NULL,
  78                                 style, 0, 0, 1, 1,
  79                                 owner, 0, instance, NULL );
  80     WIN_SetOwner( hWnd, owner );  /* MDI depends on this */
  81     SetWindowLongW( hWnd, GWL_STYLE,
  82                     GetWindowLongW( hWnd, GWL_STYLE ) & ~(WS_CAPTION | WS_BORDER) );
  83     return hWnd;
  84 }
  85 #endif
  86
  87 /***********************************************************************
  88  *           ICONTITLE_SetTitlePos
  89  */
  90 static BOOL ICONTITLE_SetTitlePos( HWND hwnd, HWND owner )
  91 {
  92     static const WCHAR emptyTitleText[] = {'<','.','.','.','>',0};
  93     WCHAR str[80];
  94     HDC hDC;
  95     HFONT hPrevFont;
  96     RECT rect;
  97     INT cx, cy;
  98     POINT pt;
  99
 100     int length = GetWindowTextW( owner, str, sizeof(str)/sizeof(WCHAR) );
 101
 102     while (length && str[length - 1] == ' ') /* remove trailing spaces */
 103         str[--length] = 0;
 104
 105     if( !length )
 106     {
 107         strcpyW( str, emptyTitleText );
 108         length = strlenW( str );
 109     }
 110
 111     if (!(hDC = GetDC( hwnd ))) return FALSE;
 112
 113     hPrevFont = SelectObject( hDC, hIconTitleFont );
 114
 115     SetRect( &rect, 0, 0, GetSystemMetrics(SM_CXICONSPACING) -
 116              GetSystemMetrics(SM_CXBORDER) * 2,
 117              GetSystemMetrics(SM_CYBORDER) * 2 );
 118
 119     DrawTextW( hDC, str, length, &rect, DT_CALCRECT | DT_CENTER | DT_NOPREFIX | DT_WORDBREAK |
 120                (( bMultiLineTitle ) ? 0 : DT_SINGLELINE) );
 121
 122     SelectObject( hDC, hPrevFont );
 123     ReleaseDC( hwnd, hDC );
 124
 125     cx = rect.right - rect.left +  4 * GetSystemMetrics(SM_CXBORDER);
 126     cy = rect.bottom - rect.top;
 127
 128     pt.x = (GetSystemMetrics(SM_CXICON) - cx) / 2;
 129     pt.y = GetSystemMetrics(SM_CYICON);
 130
 131     /* point is relative to owner, make it relative to parent */
 132     MapWindowPoints( owner, GetParent(hwnd), &pt, 1 );
 133
 134     SetWindowPos( hwnd, owner, pt.x, pt.y, cx, cy, SWP_NOACTIVATE );
 135     return TRUE;
 136 }
 137
 138 /***********************************************************************
 139  *           ICONTITLE_Paint
 140  */
 141 static BOOL ICONTITLE_Paint( HWND hwnd, HWND owner, HDC hDC, BOOL bActive )
 142 {
 143     RECT rect;
 144     HFONT hPrevFont;
 145     HBRUSH hBrush = 0;
 146     COLORREF textColor = 0;
 147
 148     if( bActive )
 149     {
 150         hBrush = GetSysColorBrush(COLOR_ACTIVECAPTION);
 151         textColor = GetSysColor(COLOR_CAPTIONTEXT);
 152     }
 153     else
 154     {
 155         if( GetWindowLongA( hwnd, GWL_STYLE ) & WS_CHILD )
 156         {
 157             hBrush = (HBRUSH) GetClassLongPtrW(hwnd, GCLP_HBRBACKGROUND);
 158             if( hBrush )
 159             {
 160                 INT level;
 161                 LOGBRUSH logBrush;
 162                 GetObjectA( hBrush, sizeof(logBrush), &logBrush );
 163                 level = GetRValue(logBrush.lbColor) +
 164                            GetGValue(logBrush.lbColor) +
 165                               GetBValue(logBrush.lbColor);
 166                 if( level < (0x7F * 3) )
 167                     textColor = RGB( 0xFF, 0xFF, 0xFF );
 168             }
 169             else
 170                 hBrush = GetStockObject( WHITE_BRUSH );
 171         }
 172         else
 173         {
 174             hBrush = GetStockObject( BLACK_BRUSH );
 175             textColor = RGB( 0xFF, 0xFF, 0xFF );
 176         }
 177     }
 178
 179     GetClientRect( hwnd, &rect );
 180     DPtoLP( hDC, (LPPOINT)&rect, 2 );
 181     FillRect( hDC, &rect, hBrush );
 182
 183     hPrevFont = SelectObject( hDC, hIconTitleFont );
 184     if( hPrevFont )
 185     {
 186         WCHAR buffer[80];
 187
 188         INT length = GetWindowTextW( owner, buffer, sizeof(buffer) );
 189         SetTextColor( hDC, textColor );
 190         SetBkMode( hDC, TRANSPARENT );
 191
 192         DrawTextW( hDC, buffer, length, &rect, DT_CENTER | DT_NOPREFIX |
 193                    DT_WORDBREAK | ((bMultiLineTitle) ? 0 : DT_SINGLELINE) );
 194
 195         SelectObject( hDC, hPrevFont );
 196     }
 197     return (hPrevFont != 0);
 198 }
 199
 200 /***********************************************************************
 201  *           IconTitleWndProc
 202  */
 203 LRESULT WINAPI IconTitleWndProc( HWND hWnd, UINT msg,
 204                                  WPARAM wParam, LPARAM lParam )
 205 {
 206     HWND owner = GetWindow( hWnd, GW_OWNER );
 207
 208     if (!IsWindow(hWnd)) return 0;
 209
 210     switch( msg )
 211     {
 212         case WM_CREATE:
 213             if (!hIconTitleFont)
 214             {
 215                 LOGFONTA logFont;
 216                 SystemParametersInfoA( SPI_GETICONTITLELOGFONT, 0, &logFont, 0 );
 217                 SystemParametersInfoA( SPI_GETICONTITLEWRAP, 0, &bMultiLineTitle, 0 );
 218                 hIconTitleFont = CreateFontIndirectA( &logFont );
 219             }
 220             return (hIconTitleFont ? 0 : -1);
 221         case WM_NCHITTEST:
 222              return HTCAPTION;
 223         case WM_NCMOUSEMOVE:
 224         case WM_NCLBUTTONDBLCLK:
 225              return SendMessageW( owner, msg, wParam, lParam );
 226         case WM_ACTIVATE:
 227              if( wParam ) SetActiveWindow( owner );
 228              return 0;
 229         case WM_CLOSE:
 230              return 0;
 231         case WM_SHOWWINDOW:
 232             if (wParam) ICONTITLE_SetTitlePos( hWnd, owner );
 233              return 0;
 234         case WM_ERASEBKGND:
 235             if( GetWindowLongA( owner, GWL_STYLE ) & WS_CHILD )
 236                 lParam = SendMessageA( owner, WM_ISACTIVEICON, 0, 0 );
 237             else
 238                 lParam = (owner == GetActiveWindow());
 239             if( ICONTITLE_Paint( hWnd, owner, (HDC)wParam, (BOOL)lParam ) )
 240                 ValidateRect( hWnd, NULL );
 241             return 1;
 242     }
 243     return DefWindowProcW( hWnd, msg, wParam, lParam );
 244 }