reactos/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <user32.h>
  22
  23 #include <wine/debug.h>
  24
  25 static BOOL bMultiLineTitle;
  26 static HFONT hIconTitleFont;
  27
  28 /*********************************************************************
  29  * icon title class descriptor
  30  */
  31 const struct builtin_class_descr ICONTITLE_builtin_class =
  32 {
  33     WC_ICONTITLE,     /* name */
  34     0,                /* style */
  35     NULL,             /* procA (winproc is Unicode only) */
  36     IconTitleWndProc, /* procW */
  37     0,                /* extra */
  38     IDC_ARROW,        /* cursor */
  39     0                 /* brush */
  40 };
  41
  42
  43
  44 #ifndef __REACTOS__
  45 /***********************************************************************
  46  *           ICONTITLE_Create
  47  */
  48 HWND ICONTITLE_Create( HWND owner )
  49 {
  50     HWND hWnd;
  51     HINSTANCE instance = (HINSTANCE)GetWindowLongPtrA( owner, GWLP_HINSTANCE );
  52     LONG style = WS_CLIPSIBLINGS;
  53
  54     if (!IsWindowEnabled(owner)) style |= WS_DISABLED;
  55     if( GetWindowLongPtrA( owner, GWL_STYLE ) & WS_CHILD )
  56         hWnd = CreateWindowExA( 0, (LPCSTR)ICONTITLE_CLASS_ATOM, NULL,
  57                                 style | WS_CHILD, 0, 0, 1, 1,
  58                                 GetParent(owner), 0, instance, NULL );
  59     else
  60         hWnd = CreateWindowExA( 0, (LPCSTR)ICONTITLE_CLASS_ATOM, NULL,
  61                                 style, 0, 0, 1, 1,
  62                                 owner, 0, instance, NULL );
  63     WIN_SetOwner( hWnd, owner );  /* MDI depends on this */
  64     SetWindowLongPtrW( hWnd, GWL_STYLE,
  65                        GetWindowLongPtrW( hWnd, GWL_STYLE ) & ~(WS_CAPTION | WS_BORDER) );
  66     return hWnd;
  67 }
  68 #endif
  69
  70 /***********************************************************************
  71  *           ICONTITLE_SetTitlePos
  72  */
  73 static BOOL ICONTITLE_SetTitlePos( HWND hwnd, HWND owner )
  74 {
  75     static const WCHAR emptyTitleText[] = {'<','.','.','.','>',0};
  76     WCHAR str[80];
  77     HDC hDC;
  78     HFONT hPrevFont;
  79     RECT rect;
  80     INT cx, cy;
  81     POINT pt;
  82
  83     int length = GetWindowTextW( owner, str, sizeof(str)/sizeof(WCHAR) );
  84
  85     while (length && str[length - 1] == ' ') /* remove trailing spaces */
  86         str[--length] = 0;
  87
  88     if( !length )
  89     {
  90         strcpyW( str, emptyTitleText );
  91         length = strlenW( str );
  92     }
  93
  94     if (!(hDC = GetDC( hwnd ))) return FALSE;
  95
  96     hPrevFont = SelectObject( hDC, hIconTitleFont );
  97
  98     SetRect( &rect, 0, 0, GetSystemMetrics(SM_CXICONSPACING) -
  99              GetSystemMetrics(SM_CXBORDER) * 2,
 100              GetSystemMetrics(SM_CYBORDER) * 2 );
 101
 102     DrawTextW( hDC, str, length, &rect, DT_CALCRECT | DT_CENTER | DT_NOPREFIX | DT_WORDBREAK |
 103                (( bMultiLineTitle ) ? 0 : DT_SINGLELINE) );
 104
 105     SelectObject( hDC, hPrevFont );
 106     ReleaseDC( hwnd, hDC );
 107
 108     cx = rect.right - rect.left +  4 * GetSystemMetrics(SM_CXBORDER);
 109     cy = rect.bottom - rect.top;
 110
 111     pt.x = (GetSystemMetrics(SM_CXICON) - cx) / 2;
 112     pt.y = GetSystemMetrics(SM_CYICON);
 113
 114     /* point is relative to owner, make it relative to parent */
 115     MapWindowPoints( owner, GetParent(hwnd), &pt, 1 );
 116
 117     SetWindowPos( hwnd, owner, pt.x, pt.y, cx, cy, SWP_NOACTIVATE );
 118     return TRUE;
 119 }
 120
 121 /***********************************************************************
 122  *           ICONTITLE_Paint
 123  */
 124 static BOOL ICONTITLE_Paint( HWND hwnd, HWND owner, HDC hDC, BOOL bActive )
 125 {
 126     RECT rect;
 127     HFONT hPrevFont;
 128     HBRUSH hBrush = 0;
 129     COLORREF textColor = 0;
 130
 131     if( bActive )
 132     {
 133         hBrush = GetSysColorBrush(COLOR_ACTIVECAPTION);
 134         textColor = GetSysColor(COLOR_CAPTIONTEXT);
 135     }
 136     else
 137     {
 138         if( GetWindowLongPtrA( hwnd, GWL_STYLE ) & WS_CHILD )
 139         {
 140             hBrush = (HBRUSH) GetClassLongPtrW(hwnd, GCLP_HBRBACKGROUND);
 141             if( hBrush )
 142             {
 143                 INT level;
 144                 LOGBRUSH logBrush;
 145                 GetObjectA( hBrush, sizeof(logBrush), &logBrush );
 146                 level = GetRValue(logBrush.lbColor) +
 147                            GetGValue(logBrush.lbColor) +
 148                               GetBValue(logBrush.lbColor);
 149                 if( level < (0x7F * 3) )
 150                     textColor = RGB( 0xFF, 0xFF, 0xFF );
 151             }
 152             else
 153                 hBrush = GetStockObject( WHITE_BRUSH );
 154         }
 155         else
 156         {
 157             hBrush = GetStockObject( BLACK_BRUSH );
 158             textColor = RGB( 0xFF, 0xFF, 0xFF );
 159         }
 160     }
 161
 162     GetClientRect( hwnd, &rect );
 163     DPtoLP( hDC, (LPPOINT)&rect, 2 );
 164     FillRect( hDC, &rect, hBrush );
 165
 166     hPrevFont = SelectObject( hDC, hIconTitleFont );
 167     if( hPrevFont )
 168     {
 169         WCHAR buffer[80];
 170
 171         INT length = GetWindowTextW( owner, buffer, sizeof(buffer)/sizeof(buffer[0]) );
 172         SetTextColor( hDC, textColor );
 173         SetBkMode( hDC, TRANSPARENT );
 174
 175         DrawTextW( hDC, buffer, length, &rect, DT_CENTER | DT_NOPREFIX |
 176                    DT_WORDBREAK | ((bMultiLineTitle) ? 0 : DT_SINGLELINE) );
 177
 178         SelectObject( hDC, hPrevFont );
 179     }
 180     return (hPrevFont != 0);
 181 }
 182
 183 /***********************************************************************
 184  *           IconTitleWndProc
 185  */
 186 LRESULT WINAPI IconTitleWndProc( HWND hWnd, UINT msg,
 187                                  WPARAM wParam, LPARAM lParam )
 188 {
 189     HWND owner = GetWindow( hWnd, GW_OWNER );
 190
 191     if (!IsWindow(hWnd)) return 0;
 192
 193     switch( msg )
 194     {
 195         case WM_CREATE:
 196             if (!hIconTitleFont)
 197             {
 198                 LOGFONTA logFont;
 199                 SystemParametersInfoA( SPI_GETICONTITLELOGFONT, 0, &logFont, 0 );
 200                 SystemParametersInfoA( SPI_GETICONTITLEWRAP, 0, &bMultiLineTitle, 0 );
 201                 hIconTitleFont = CreateFontIndirectA( &logFont );
 202             }
 203             return (hIconTitleFont ? 0 : -1);
 204         case WM_NCHITTEST:
 205              return HTCAPTION;
 206         case WM_NCMOUSEMOVE:
 207         case WM_NCLBUTTONDBLCLK:
 208              return SendMessageW( owner, msg, wParam, lParam );
 209         case WM_ACTIVATE:
 210              if( wParam ) SetActiveWindow( owner );
 211              return 0;
 212         case WM_CLOSE:
 213              return 0;
 214         case WM_SHOWWINDOW:
 215             if (wParam) ICONTITLE_SetTitlePos( hWnd, owner );
 216              return 0;
 217         case WM_ERASEBKGND:
 218             if( GetWindowLongPtrW( owner, GWL_STYLE ) & WS_CHILD )
 219                 lParam = SendMessageW( owner, WM_ISACTIVEICON, 0, 0 );
 220             else
 221                 lParam = (owner == GetActiveWindow());
 222             if( ICONTITLE_Paint( hWnd, owner, (HDC)wParam, (BOOL)lParam ) )
 223                 ValidateRect( hWnd, NULL );
 224             return 1;
 225     }
 226     return DefWindowProcW( hWnd, msg, wParam, lParam );
 227 }