lib/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 /*
  22  * COPYRIGHT:        See COPYING in the top level directory
  23  * PROJECT:          ReactOS User32
  24  * PURPOSE:          Static control
  25  * FILE:             lib/user32/controls/icontitle.c
  26  * PROGRAMER:        Steven Edwards
  27  * REVISION HISTORY: 2003/06/21 SAE Created
  28  * NOTES:            Adapted from Wine
  29  */
  30
  31 #include "windows.h"
  32 #include "user32/regcontrol.h"
  33 #include "controls.h"
  34
  35 static BOOL bMultiLineTitle;
  36 static HFONT hIconTitleFont;
  37
  38 static LRESULT CALLBACK IconTitleWndProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam );
  39
  40 /*********************************************************************
  41  * icon title class descriptor
  42  */
  43 const struct builtin_class_descr ICONTITLE_builtin_class =
  44 {
  45     L"ICONTITLE_CLASS_ATOM",     /* name */
  46     CS_GLOBALCLASS,             /* style */
  47     (WNDPROC) IconTitleWndProc, /* procW */
  48     0,                          /* extra */
  49     (LPCWSTR) IDC_ARROW,         /* cursor */ /* FIXME Wine uses IDC_ARROWA */
  50     0                           /* brush */
  51 };
  52
  53
  54
  55 /***********************************************************************
  56  *           ICONTITLE_Create
  57  */
  58 HWND ICONTITLE_Create( HWND owner )
  59 {
  60     HWND hWnd;
  61     HINSTANCE instance = (HINSTANCE)GetWindowLongA( owner, GWL_HINSTANCE );
  62     LONG style = WS_CLIPSIBLINGS;
  63
  64     if (!IsWindowEnabled(owner)) style |= WS_DISABLED;
  65     if( GetWindowLongA( owner, GWL_STYLE ) & WS_CHILD )
  66         hWnd = CreateWindowExA( 0, ICONTITLE_CLASS_ATOM, NULL,
  67                                 style | WS_CHILD, 0, 0, 1, 1,
  68                                 GetParent(owner), 0, instance, NULL );
  69     else
  70         hWnd = CreateWindowExA( 0, ICONTITLE_CLASS_ATOM, NULL,
  71                                 style, 0, 0, 1, 1,
  72                                 owner, 0, instance, NULL );
  73     //WIN_SetOwner( hWnd, owner );  /* MDI depends on this */
  74     SetWindowLongW( hWnd, GWL_STYLE,
  75                     GetWindowLongW( hWnd, GWL_STYLE ) & ~(WS_CAPTION | WS_BORDER) );
  76     return hWnd;
  77 }
  78
  79 /***********************************************************************
  80  *           ICONTITLE_SetTitlePos
  81  */
  82 static BOOL ICONTITLE_SetTitlePos( HWND hwnd, HWND owner )
  83 {
  84     static WCHAR emptyTitleText[] = {'<','.','.','.','>',0};
  85     WCHAR str[80];
  86     HDC hDC;
  87     HFONT hPrevFont;
  88     RECT rect;
  89     INT cx, cy;
  90     POINT pt;
  91
  92     int length = GetWindowTextW( owner, str, sizeof(str)/sizeof(WCHAR) );
  93
  94     while (length && str[length - 1] == ' ') /* remove trailing spaces */
  95         str[--length] = 0;
  96
  97     if( !length )
  98     {
  99         lstrcpyW( str, emptyTitleText );
 100         length = lstrlenW( str );
 101     }
 102
 103     if (!(hDC = GetDC( hwnd ))) return FALSE;
 104
 105     hPrevFont = SelectObject( hDC, hIconTitleFont );
 106
 107     SetRect( &rect, 0, 0, GetSystemMetrics(SM_CXICONSPACING) -
 108              GetSystemMetrics(SM_CXBORDER) * 2,
 109              GetSystemMetrics(SM_CYBORDER) * 2 );
 110
 111     DrawTextW( hDC, str, length, &rect, DT_CALCRECT | DT_CENTER | DT_NOPREFIX | DT_WORDBREAK |
 112                (( bMultiLineTitle ) ? 0 : DT_SINGLELINE) );
 113
 114     SelectObject( hDC, hPrevFont );
 115     ReleaseDC( hwnd, hDC );
 116
 117     cx = rect.right - rect.left +  4 * GetSystemMetrics(SM_CXBORDER);
 118     cy = rect.bottom - rect.top;
 119
 120     pt.x = (GetSystemMetrics(SM_CXICON) - cx) / 2;
 121     pt.y = GetSystemMetrics(SM_CYICON);
 122
 123     /* point is relative to owner, make it relative to parent */
 124     MapWindowPoints( owner, GetParent(hwnd), &pt, 1 );
 125
 126     SetWindowPos( hwnd, owner, pt.x, pt.y, cx, cy, SWP_NOACTIVATE );
 127     return TRUE;
 128 }
 129
 130 /***********************************************************************
 131  *           ICONTITLE_Paint
 132  */
 133 static BOOL ICONTITLE_Paint( HWND hwnd, HWND owner, HDC hDC, BOOL bActive )
 134 {
 135     RECT rect;
 136     HFONT hPrevFont;
 137     HBRUSH hBrush = 0;
 138     COLORREF textColor = 0;
 139
 140     if( bActive )
 141     {
 142         hBrush = GetSysColorBrush(COLOR_ACTIVECAPTION);
 143         textColor = GetSysColor(COLOR_CAPTIONTEXT);
 144     }
 145     else
 146     {
 147         if( GetWindowLongA( hwnd, GWL_STYLE ) & WS_CHILD )
 148         {
 149             hBrush = (HBRUSH) GetClassLongA(hwnd, GCL_HBRBACKGROUND);
 150             if( hBrush )
 151             {
 152                 INT level;
 153                 LOGBRUSH logBrush;
 154                 GetObjectA( hBrush, sizeof(logBrush), &logBrush );
 155                 level = GetRValue(logBrush.lbColor) +
 156                            GetGValue(logBrush.lbColor) +
 157                               GetBValue(logBrush.lbColor);
 158                 if( level < (0x7F * 3) )
 159                     textColor = RGB( 0xFF, 0xFF, 0xFF );
 160             }
 161             else
 162                 hBrush = GetStockObject( WHITE_BRUSH );
 163         }
 164         else
 165         {
 166             hBrush = GetStockObject( BLACK_BRUSH );
 167             textColor = RGB( 0xFF, 0xFF, 0xFF );
 168         }
 169     }
 170
 171     GetClientRect( hwnd, &rect );
 172     DPtoLP( hDC, (LPPOINT)&rect, 2 );
 173     FillRect( hDC, &rect, hBrush );
 174
 175     hPrevFont = SelectObject( hDC, hIconTitleFont );
 176     if( hPrevFont )
 177     {
 178         WCHAR buffer[80];
 179
 180         INT length = GetWindowTextW( owner, buffer, sizeof(buffer) );
 181         SetTextColor( hDC, textColor );
 182         SetBkMode( hDC, TRANSPARENT );
 183
 184         DrawTextW( hDC, buffer, length, &rect, DT_CENTER | DT_NOPREFIX |
 185                    DT_WORDBREAK | ((bMultiLineTitle) ? 0 : DT_SINGLELINE) );
 186
 187         SelectObject( hDC, hPrevFont );
 188     }
 189     return (hPrevFont != 0);
 190 }
 191
 192 /***********************************************************************
 193  *           IconTitleWndProc
 194  */
 195 LRESULT WINAPI IconTitleWndProc( HWND hWnd, UINT msg,
 196                                  WPARAM wParam, LPARAM lParam )
 197 {
 198     HWND owner = GetWindow( hWnd, GW_OWNER );
 199
 200     if (!IsWindow(hWnd)) return 0;
 201
 202     switch( msg )
 203     {
 204         case WM_CREATE:
 205             if (!hIconTitleFont)
 206             {
 207                 LOGFONTA logFont;
 208                 SystemParametersInfoA( SPI_GETICONTITLELOGFONT, 0, &logFont, 0 );
 209                 SystemParametersInfoA( SPI_GETICONTITLEWRAP, 0, &bMultiLineTitle, 0 );
 210                 hIconTitleFont = CreateFontIndirectA( &logFont );
 211             }
 212             return (hIconTitleFont ? 0 : -1);
 213         case WM_NCHITTEST:
 214              return HTCAPTION;
 215         case WM_NCMOUSEMOVE:
 216         case WM_NCLBUTTONDBLCLK:
 217              return SendMessageW( owner, msg, wParam, lParam );
 218         case WM_ACTIVATE:
 219              if( wParam ) SetActiveWindow( owner );
 220              return 0;
 221         case WM_CLOSE:
 222              return 0;
 223         case WM_SHOWWINDOW:
 224             if (wParam) ICONTITLE_SetTitlePos( hWnd, owner );
 225              return 0;
 226         case WM_ERASEBKGND:
 227             if( GetWindowLongA( owner, GWL_STYLE ) & WS_CHILD )
 228                 lParam = SendMessageA( owner, WM_ISACTIVEICON, 0, 0 );
 229             else
 230                 lParam = (owner == GetActiveWindow());
 231             if( ICONTITLE_Paint( hWnd, owner, (HDC)wParam, (BOOL)lParam ) )
 232                 ValidateRect( hWnd, NULL );
 233             return 1;
 234     }
 235     return DefWindowProcW( hWnd, msg, wParam, lParam );
 236 }