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