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