controls/icontitle.c

   1 /*
   2  * Icontitle window class.
   3  *
   4  * Copyright 1997 Alex Korobka
   5  */
   6
   7 #include <stdio.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10
  11 #include "windef.h"
  12 #include "winbase.h"
  13 #include "wingdi.h"
  14 #include "winuser.h"
  15 #include "wine/winuser16.h"
  16 #include "wine/unicode.h"
  17 #include "controls.h"
  18 #include "win.h"
  19
  20 static BOOL bMultiLineTitle;
  21 static HFONT hIconTitleFont;
  22
  23 static LRESULT WINAPI IconTitleWndProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam );
  24
  25 /*********************************************************************
  26  * icon title class descriptor
  27  */
  28 const struct builtin_class_descr ICONTITLE_builtin_class =
  29 {
  30     ICONTITLE_CLASS_ATOM, /* name */
  31     CS_GLOBALCLASS,       /* style */
  32     NULL,                 /* procA (winproc is Unicode only) */
  33     IconTitleWndProc,     /* procW */
  34     0,                    /* extra */
  35     IDC_ARROWA,           /* cursor */
  36     0                     /* brush */
  37 };
  38
  39
  40
  41 /***********************************************************************
  42  *           ICONTITLE_Create
  43  */
  44 HWND ICONTITLE_Create( HWND owner )
  45 {
  46     HWND hWnd;
  47     HINSTANCE instance = GetWindowLongA( owner, GWL_HINSTANCE );
  48     LONG style = WS_CLIPSIBLINGS;
  49
  50     if (!IsWindowEnabled(owner)) style |= WS_DISABLED;
  51     if( GetWindowLongA( owner, GWL_STYLE ) & WS_CHILD )
  52         hWnd = CreateWindowExA( 0, ICONTITLE_CLASS_ATOM, NULL,
  53                                 style | WS_CHILD, 0, 0, 1, 1,
  54                                 GetParent(owner), 0, instance, NULL );
  55     else
  56         hWnd = CreateWindowExA( 0, ICONTITLE_CLASS_ATOM, NULL,
  57                                 style, 0, 0, 1, 1,
  58                                 owner, 0, instance, NULL );
  59     WIN_SetOwner( hWnd, owner );  /* MDI depends on this */
  60     SetWindowLongW( hWnd, GWL_STYLE,
  61                     GetWindowLongW( hWnd, GWL_STYLE ) & ~(WS_CAPTION | WS_BORDER) );
  62     return hWnd;
  63 }
  64
  65 /***********************************************************************
  66  *           ICONTITLE_SetTitlePos
  67  */
  68 static BOOL ICONTITLE_SetTitlePos( HWND hwnd, HWND owner )
  69 {
  70     static WCHAR emptyTitleText[] = {'<','.','.','.','>',0};
  71     WCHAR str[80];
  72     HDC hDC;
  73     HFONT hPrevFont;
  74     RECT rect;
  75     INT cx, cy;
  76     POINT pt;
  77
  78     int length = GetWindowTextW( owner, str, sizeof(str)/sizeof(WCHAR) );
  79
  80     while (length && str[length - 1] == ' ') /* remove trailing spaces */
  81         str[--length] = 0;
  82
  83     if( !length )
  84     {
  85         strcpyW( str, emptyTitleText );
  86         length = strlenW( str );
  87     }
  88
  89     if (!(hDC = GetDC( hwnd ))) return FALSE;
  90
  91     hPrevFont = SelectObject( hDC, hIconTitleFont );
  92
  93     SetRect( &rect, 0, 0, GetSystemMetrics(SM_CXICONSPACING) -
  94              GetSystemMetrics(SM_CXBORDER) * 2,
  95              GetSystemMetrics(SM_CYBORDER) * 2 );
  96
  97     DrawTextW( hDC, str, length, &rect, DT_CALCRECT | DT_CENTER | DT_NOPREFIX | DT_WORDBREAK |
  98                (( bMultiLineTitle ) ? 0 : DT_SINGLELINE) );
  99
 100     SelectObject( hDC, hPrevFont );
 101     ReleaseDC( hwnd, hDC );
 102
 103     cx = rect.right - rect.left +  4 * GetSystemMetrics(SM_CXBORDER);
 104     cy = rect.bottom - rect.top;
 105
 106     pt.x = (GetSystemMetrics(SM_CXICON) - cx) / 2;
 107     pt.y = GetSystemMetrics(SM_CYICON);
 108
 109     /* point is relative to owner, make it relative to parent */
 110     MapWindowPoints( owner, GetParent(hwnd), &pt, 1 );
 111
 112     SetWindowPos( hwnd, owner, pt.x, pt.y, cx, cy, SWP_NOACTIVATE );
 113     return TRUE;
 114 }
 115
 116 /***********************************************************************
 117  *           ICONTITLE_Paint
 118  */
 119 static BOOL ICONTITLE_Paint( HWND hwnd, HWND owner, HDC hDC, BOOL bActive )
 120 {
 121     RECT rect;
 122     HFONT hPrevFont;
 123     HBRUSH hBrush = 0;
 124     COLORREF textColor = 0;
 125
 126     if( bActive )
 127     {
 128         hBrush = GetSysColorBrush(COLOR_ACTIVECAPTION);
 129         textColor = GetSysColor(COLOR_CAPTIONTEXT);
 130     }
 131     else
 132     {
 133         if( GetWindowLongA( hwnd, GWL_STYLE ) & WS_CHILD )
 134         {
 135             hBrush = (HBRUSH) GetClassLongA(hwnd, GCL_HBRBACKGROUND);
 136             if( hBrush )
 137             {
 138                 INT level;
 139                 LOGBRUSH logBrush;
 140                 GetObjectA( hBrush, sizeof(logBrush), &logBrush );
 141                 level = GetRValue(logBrush.lbColor) +
 142                            GetGValue(logBrush.lbColor) +
 143                               GetBValue(logBrush.lbColor);
 144                 if( level < (0x7F * 3) )
 145                     textColor = RGB( 0xFF, 0xFF, 0xFF );
 146             }
 147             else
 148                 hBrush = GetStockObject( WHITE_BRUSH );
 149         }
 150         else
 151         {
 152             hBrush = GetStockObject( BLACK_BRUSH );
 153             textColor = RGB( 0xFF, 0xFF, 0xFF );
 154         }
 155     }
 156
 157     GetClientRect( hwnd, &rect );
 158     DPtoLP( hDC, (LPPOINT)&rect, 2 );
 159     FillRect( hDC, &rect, hBrush );
 160
 161     hPrevFont = SelectObject( hDC, hIconTitleFont );
 162     if( hPrevFont )
 163     {
 164         WCHAR buffer[80];
 165
 166         INT length = GetWindowTextW( owner, buffer, sizeof(buffer) );
 167         SetTextColor( hDC, textColor );
 168         SetBkMode( hDC, TRANSPARENT );
 169
 170         DrawTextW( hDC, buffer, length, &rect, DT_CENTER | DT_NOPREFIX |
 171                    DT_WORDBREAK | ((bMultiLineTitle) ? 0 : DT_SINGLELINE) );
 172
 173         SelectObject( hDC, hPrevFont );
 174     }
 175     return (hPrevFont != 0);
 176 }
 177
 178 /***********************************************************************
 179  *           IconTitleWndProc
 180  */
 181 LRESULT WINAPI IconTitleWndProc( HWND hWnd, UINT msg,
 182                                  WPARAM wParam, LPARAM lParam )
 183 {
 184     HWND owner = GetWindow( hWnd, GW_OWNER );
 185
 186     if (!IsWindow(hWnd)) return 0;
 187
 188     switch( msg )
 189     {
 190         case WM_CREATE:
 191             if (!hIconTitleFont)
 192             {
 193                 LOGFONTA logFont;
 194                 SystemParametersInfoA( SPI_GETICONTITLELOGFONT, 0, &logFont, 0 );
 195                 SystemParametersInfoA( SPI_GETICONTITLEWRAP, 0, &bMultiLineTitle, 0 );
 196                 hIconTitleFont = CreateFontIndirectA( &logFont );
 197             }
 198             return (hIconTitleFont ? 0 : -1);
 199         case WM_NCHITTEST:
 200              return HTCAPTION;
 201         case WM_NCMOUSEMOVE:
 202         case WM_NCLBUTTONDBLCLK:
 203              return SendMessageW( owner, msg, wParam, lParam );
 204         case WM_ACTIVATE:
 205              if( wParam ) SetActiveWindow( owner );
 206              return 0;
 207         case WM_CLOSE:
 208              return 0;
 209         case WM_SHOWWINDOW:
 210             if (wParam) ICONTITLE_SetTitlePos( hWnd, owner );
 211              return 0;
 212         case WM_ERASEBKGND:
 213             if( GetWindowLongA( owner, GWL_STYLE ) & WS_CHILD )
 214                 lParam = SendMessageA( owner, WM_ISACTIVEICON, 0, 0 );
 215             else
 216                 lParam = (owner == GetActiveWindow());
 217             if( ICONTITLE_Paint( hWnd, owner, (HDC)wParam, (BOOL)lParam ) )
 218                 ValidateRect( hWnd, NULL );
 219             return 1;
 220     }
 221     return DefWindowProcW( hWnd, msg, wParam, lParam );
 222 }
 223
 224