src/msw/statbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/statbox.cpp
   3 // Purpose:     wxStaticBox
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_STATBOX
  28
  29 #include "wx/statbox.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/dcclient.h"
  34     #include "wx/dcmemory.h"
  35     #include "wx/image.h"
  36 #endif
  37
  38 #include "wx/notebook.h"
  39 #include "wx/sysopt.h"
  40
  41 #include "wx/msw/uxtheme.h"
  42 #include "wx/msw/private.h"
  43 #include "wx/msw/missing.h"
  44
  45 // ----------------------------------------------------------------------------
  46 // wxWin macros
  47 // ----------------------------------------------------------------------------
  48
  49 #if wxUSE_EXTENDED_RTTI
  50 WX_DEFINE_FLAGS( wxStaticBoxStyle )
  51
  52 wxBEGIN_FLAGS( wxStaticBoxStyle )
  53     // new style border flags, we put them first to
  54     // use them for streaming out
  55     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  56     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  57     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  58     wxFLAGS_MEMBER(wxBORDER_RAISED)
  59     wxFLAGS_MEMBER(wxBORDER_STATIC)
  60     wxFLAGS_MEMBER(wxBORDER_NONE)
  61
  62     // old style border flags
  63     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  64     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  65     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  66     wxFLAGS_MEMBER(wxRAISED_BORDER)
  67     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  68     wxFLAGS_MEMBER(wxBORDER)
  69
  70     // standard window styles
  71     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  72     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  73     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  74     wxFLAGS_MEMBER(wxWANTS_CHARS)
  75     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  76     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  77     wxFLAGS_MEMBER(wxVSCROLL)
  78     wxFLAGS_MEMBER(wxHSCROLL)
  79
  80 wxEND_FLAGS( wxStaticBoxStyle )
  81
  82 IMPLEMENT_DYNAMIC_CLASS_XTI(wxStaticBox, wxControl,"wx/statbox.h")
  83
  84 wxBEGIN_PROPERTIES_TABLE(wxStaticBox)
  85     wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
  86     wxPROPERTY_FLAGS( WindowStyle , wxStaticBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
  87 /*
  88     TODO PROPERTIES :
  89         label
  90 */
  91 wxEND_PROPERTIES_TABLE()
  92
  93 wxBEGIN_HANDLERS_TABLE(wxStaticBox)
  94 wxEND_HANDLERS_TABLE()
  95
  96 wxCONSTRUCTOR_6( wxStaticBox , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle )
  97 #else
  98 IMPLEMENT_DYNAMIC_CLASS(wxStaticBox, wxControl)
  99 #endif
 100
 101 // ============================================================================
 102 // implementation
 103 // ============================================================================
 104
 105 // ----------------------------------------------------------------------------
 106 // wxStaticBox
 107 // ----------------------------------------------------------------------------
 108
 109 bool wxStaticBox::Create(wxWindow *parent,
 110                          wxWindowID id,
 111                          const wxString& label,
 112                          const wxPoint& pos,
 113                          const wxSize& size,
 114                          long style,
 115                          const wxString& name)
 116 {
 117     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
 118         return false;
 119
 120     if ( !MSWCreateControl(wxT("BUTTON"), label, pos, size) )
 121         return false;
 122
 123 #ifndef __WXWINCE__
 124     if (!wxSystemOptions::IsFalse(wxT("msw.staticbox.optimized-paint")))
 125         Connect(wxEVT_PAINT, wxPaintEventHandler(wxStaticBox::OnPaint));
 126 #endif // !__WXWINCE__
 127
 128     return true;
 129 }
 130
 131 wxBorder wxStaticBox::GetDefaultBorder() const
 132 {
 133     return wxBORDER_NONE;
 134 }
 135
 136 WXDWORD wxStaticBox::MSWGetStyle(long style, WXDWORD *exstyle) const
 137 {
 138     long styleWin = wxStaticBoxBase::MSWGetStyle(style, exstyle);
 139
 140     // no need for it anymore, must be removed for wxRadioBox child
 141     // buttons to be able to repaint themselves
 142     styleWin &= ~WS_CLIPCHILDREN;
 143
 144     if ( exstyle )
 145     {
 146 #ifndef __WXWINCE__
 147         if (wxSystemOptions::IsFalse(wxT("msw.staticbox.optimized-paint")))
 148             *exstyle = WS_EX_TRANSPARENT;
 149         else
 150 #endif
 151             *exstyle = 0;
 152     }
 153
 154     return styleWin | BS_GROUPBOX;
 155 }
 156
 157 wxSize wxStaticBox::DoGetBestSize() const
 158 {
 159     int cx, cy;
 160     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
 161
 162     int wBox;
 163     GetTextExtent(GetLabelText(wxGetWindowText(m_hWnd)), &wBox, &cy);
 164
 165     wBox += 3*cx;
 166     int hBox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
 167
 168     wxSize best(wBox, hBox);
 169     CacheBestSize(best);
 170     return best;
 171 }
 172
 173 void wxStaticBox::GetBordersForSizer(int *borderTop, int *borderOther) const
 174 {
 175     wxStaticBoxBase::GetBordersForSizer(borderTop, borderOther);
 176
 177     // need extra space, don't know how much but this seems to be enough
 178     *borderTop += GetCharHeight()/3;
 179 }
 180
 181 // all the hacks below are not necessary for WinCE
 182 #ifndef __WXWINCE__
 183
 184 WXLRESULT wxStaticBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 185 {
 186     if ( nMsg == WM_NCHITTEST )
 187     {
 188         // This code breaks some other processing such as enter/leave tracking
 189         // so it's off by default.
 190
 191         static int s_useHTClient = -1;
 192         if (s_useHTClient == -1)
 193             s_useHTClient = wxSystemOptions::GetOptionInt(wxT("msw.staticbox.htclient"));
 194         if (s_useHTClient == 1)
 195         {
 196             int xPos = GET_X_LPARAM(lParam);
 197             int yPos = GET_Y_LPARAM(lParam);
 198
 199             ScreenToClient(&xPos, &yPos);
 200
 201             // Make sure you can drag by the top of the groupbox, but let
 202             // other (enclosed) controls get mouse events also
 203             if ( yPos < 10 )
 204                 return (long)HTCLIENT;
 205         }
 206     }
 207
 208     if ( nMsg == WM_PRINTCLIENT )
 209     {
 210         // we have to process WM_PRINTCLIENT ourselves as otherwise child
 211         // windows' background (eg buttons in radio box) would never be drawn
 212         // unless we have a parent with non default background
 213
 214         // so check first if we have one
 215         if ( !HandlePrintClient((WXHDC)wParam) )
 216         {
 217             // no, we don't, erase the background ourselves
 218             // (don't use our own) - see PaintBackground for explanation
 219             wxBrush brush(GetParent()->GetBackgroundColour());
 220             wxFillRect(GetHwnd(), (HDC)wParam, GetHbrushOf(brush));
 221         }
 222
 223         return 0;
 224     }
 225
 226     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 227 }
 228
 229 // ----------------------------------------------------------------------------
 230 // static box drawing
 231 // ----------------------------------------------------------------------------
 232
 233 /*
 234    We draw the static box ourselves because it's the only way to prevent it
 235    from flickering horribly on resize (because everything inside the box is
 236    erased twice: once when the box itself is repainted and second time when
 237    the control inside it is repainted) without using WS_EX_TRANSPARENT style as
 238    we used to do and which resulted in other problems.
 239  */
 240
 241 // MSWGetRegionWithoutSelf helper: removes the given rectangle from region
 242 static inline void
 243 SubtractRectFromRgn(HRGN hrgn, int left, int top, int right, int bottom)
 244 {
 245     AutoHRGN hrgnRect(::CreateRectRgn(left, top, right, bottom));
 246     if ( !hrgnRect )
 247     {
 248         wxLogLastError(_T("CreateRectRgn()"));
 249         return;
 250     }
 251
 252     ::CombineRgn(hrgn, hrgn, hrgnRect, RGN_DIFF);
 253 }
 254
 255 void wxStaticBox::MSWGetRegionWithoutSelf(WXHRGN hRgn, int w, int h)
 256 {
 257     HRGN hrgn = (HRGN)hRgn;
 258
 259     // remove the area occupied by the static box borders from the region
 260     int borderTop, border;
 261     GetBordersForSizer(&borderTop, &border);
 262
 263     // top
 264     SubtractRectFromRgn(hrgn, 0, 0, w, borderTop);
 265
 266     // bottom
 267     SubtractRectFromRgn(hrgn, 0, h - border, w, h);
 268
 269     // left
 270     SubtractRectFromRgn(hrgn, 0, 0, border, h);
 271
 272     // right
 273     SubtractRectFromRgn(hrgn, w - border, 0, w, h);
 274 }
 275
 276 WXHRGN wxStaticBox::MSWGetRegionWithoutChildren()
 277 {
 278     RECT rc;
 279     ::GetWindowRect(GetHwnd(), &rc);
 280     HRGN hrgn = ::CreateRectRgn(rc.left, rc.top, rc.right + 1, rc.bottom + 1);
 281     bool foundThis = false;
 282
 283     // iterate over all child windows (not just wxWindows but all windows)
 284     for ( HWND child = ::GetWindow(GetHwndOf(GetParent()), GW_CHILD);
 285           child;
 286           child = ::GetWindow(child, GW_HWNDNEXT) )
 287     {
 288         if ( ! ::IsWindowVisible(child) )
 289         {
 290             // if the window isn't visible then it doesn't need clipped
 291             continue;
 292         }
 293
 294         LONG style = ::GetWindowLong(child, GWL_STYLE);
 295         wxString str(wxGetWindowClass(child));
 296         str.UpperCase();
 297         if ( str == wxT("BUTTON") && (style & BS_GROUPBOX) == BS_GROUPBOX )
 298         {
 299             if ( child == GetHwnd() )
 300                 foundThis = true;
 301
 302             // Any static boxes below this one in the Z-order can't be clipped
 303             // since if we have the case where a static box with a low Z-order
 304             // is nested inside another static box with a high Z-order then the
 305             // nested static box would be painted over. Doing it this way
 306             // unfortunately results in flicker if the Z-order of nested static
 307             // boxes is not inside (lowest) to outside (highest) but at least
 308             // they are still shown.
 309             if ( foundThis )
 310                 continue;
 311         }
 312
 313         ::GetWindowRect(child, &rc);
 314         if ( ::RectInRegion(hrgn, &rc) )
 315         {
 316             // need to remove WS_CLIPSIBLINGS from all sibling windows
 317             // that are within this staticbox if set
 318             if ( style & WS_CLIPSIBLINGS )
 319             {
 320                 style &= ~WS_CLIPSIBLINGS;
 321                 ::SetWindowLong(child, GWL_STYLE, style);
 322
 323                 // MSDN: "If you have changed certain window data using
 324                 // SetWindowLong, you must call SetWindowPos to have the
 325                 // changes take effect."
 326                 ::SetWindowPos(child, NULL, 0, 0, 0, 0,
 327                                SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
 328                                SWP_FRAMECHANGED);
 329             }
 330
 331             AutoHRGN hrgnChild(::CreateRectRgnIndirect(&rc));
 332             ::CombineRgn(hrgn, hrgn, hrgnChild, RGN_DIFF);
 333         }
 334     }
 335
 336     return (WXHRGN)hrgn;
 337 }
 338
 339 // helper for OnPaint(): really erase the background, i.e. do it even if we
 340 // don't have any non default brush for doing it (DoEraseBackground() doesn't
 341 // do anything in such case)
 342 void wxStaticBox::PaintBackground(wxDC& dc, const RECT& rc)
 343 {
 344     // note that we do not use the box background colour here, it shouldn't
 345     // apply to its interior for several reasons:
 346     //  1. wxGTK doesn't do it
 347     //  2. controls inside the box don't get correct bg colour because they
 348     //     are not our children so we'd have some really ugly colour mix if
 349     //     we did it
 350     //  3. this is backwards compatible behaviour and some people rely on it,
 351     //     see http://groups.google.com/groups?selm=4252E932.3080801%40able.es
 352     wxWindow *parent = GetParent();
 353     HBRUSH hbr = (HBRUSH)parent->MSWGetBgBrush(dc.GetHDC(), GetHWND());
 354
 355     // if there is no special brush for painting this control, just use the
 356     // solid background colour
 357     wxBrush brush;
 358     if ( !hbr )
 359     {
 360         brush = wxBrush(parent->GetBackgroundColour());
 361         hbr = GetHbrushOf(brush);
 362     }
 363
 364     ::FillRect(GetHdcOf(dc), &rc, hbr);
 365 }
 366
 367 void wxStaticBox::PaintForeground(wxDC& dc, const RECT& WXUNUSED(rc))
 368 {
 369     MSWDefWindowProc(WM_PAINT, (WPARAM)GetHdcOf(dc), 0);
 370
 371     // when using XP themes, neither setting the text colour nor transparent
 372     // background mode doesn't change anything: the static box def window proc
 373     // still draws the label in its own colours, so we need to redraw the text
 374     // ourselves if we have a non default fg colour
 375     if ( wxUxThemeEngine::GetIfActive() )
 376     {
 377         // draw over the text in default colour in our colour
 378         dc.SetFont(GetFont());
 379
 380         HDC hdc = GetHdcOf(dc);
 381         if ( m_hasFgCol )
 382         {
 383             ::SetTextColor(hdc, GetForegroundColour().GetPixel());
 384         }
 385         else
 386         {
 387             wxUxThemeHandle hTheme(this, L"BUTTON");
 388             if (hTheme)
 389             {
 390                 COLORREF col;
 391                 wxUxThemeEngine::Get()->GetThemeColor(
 392                                             hTheme,
 393                                             4 /* BP_GROUPBOX */,
 394                                             1 /* GBS_NORMAL */,
 395                                             3803 /* TMT_TEXTCOLOR */,
 396                                             &col);
 397
 398                 ::SetTextColor(hdc, col);
 399             }
 400             else
 401             {
 402                 // can't open the theme - default to blue
 403                 ::SetTextColor(hdc, 0x00D54600);
 404             }
 405         }
 406
 407         // FIXME: value of x is hardcoded as this is what it is on my system,
 408         //        no idea if it's true everywhere
 409         // TODO: RTL?
 410         const int x = 9;
 411         const int y = dc.GetCharHeight();
 412         const wxString label = GetLabel();
 413
 414         // first we need to correctly paint the background of the label
 415         // as Windows ignores the brush offset when doing it
 416         RECT rc = { x, 0, GetSize().x, y };
 417         ::DrawText(hdc, label, label.length(), &rc,
 418                    DT_SINGLELINE | DT_VCENTER | DT_CALCRECT);
 419
 420         // need to adjust the rectangle to cover all the label background
 421         rc.left -= 2;
 422         rc.right += 2;
 423         rc.bottom += 2;
 424         PaintBackground(dc, rc);
 425
 426         // now draw the text
 427         RECT rc2 = { x, 0, GetSize().x, y };
 428         ::DrawText(hdc, label, label.length(), &rc2,
 429                    DT_SINGLELINE | DT_VCENTER);
 430     }
 431 }
 432
 433 void wxStaticBox::OnPaint(wxPaintEvent& WXUNUSED(event))
 434 {
 435     RECT rc;
 436     ::GetClientRect(GetHwnd(), &rc);
 437
 438     // draw the entire box in a memory DC
 439     wxMemoryDC memdc;
 440     wxBitmap bitmap(rc.right, rc.bottom);
 441     memdc.SelectObject(bitmap);
 442
 443     PaintBackground(memdc, rc);
 444     PaintForeground(memdc, rc);
 445
 446     // now only blit the static box border itself, not the interior, to avoid
 447     // flicker when background is drawn below
 448     //
 449     // note that it seems to be faster to do 4 small blits here and then paint
 450     // directly into wxPaintDC than painting background in wxMemoryDC and then
 451     // blitting everything at once to wxPaintDC, this is why we do it like this
 452     wxPaintDC dc(this);
 453     int borderTop, border;
 454     GetBordersForSizer(&borderTop, &border);
 455
 456     // top
 457     dc.Blit(border, 0, rc.right - border, borderTop,
 458             &memdc, border, 0);
 459     // bottom
 460     dc.Blit(border, rc.bottom - border, rc.right - border, rc.bottom,
 461             &memdc, border, rc.bottom - border);
 462     // left
 463     dc.Blit(0, 0, border, rc.bottom,
 464             &memdc, 0, 0);
 465     // right
 466     dc.Blit(rc.right - border, 0, rc.right, rc.bottom,
 467             &memdc, rc.right - border, 0);
 468
 469
 470     // create the region excluding box children
 471     AutoHRGN hrgn((HRGN)MSWGetRegionWithoutChildren());
 472     RECT rcWin;
 473     ::GetWindowRect(GetHwnd(), &rcWin);
 474     ::OffsetRgn(hrgn, -rcWin.left, -rcWin.top);
 475
 476     // and also the box itself
 477     MSWGetRegionWithoutSelf((WXHRGN) hrgn, rc.right, rc.bottom);
 478     HDCClipper clipToBg(GetHdcOf(dc), hrgn);
 479
 480     // paint the inside of the box (excluding box itself and child controls)
 481     PaintBackground(dc, rc);
 482 }
 483
 484 #endif // !__WXWINCE__
 485
 486 #endif // wxUSE_STATBOX