src/msw/statbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "statbox.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_STATBOX
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/app.h"
  35     #include "wx/dcclient.h"
  36 #endif
  37
  38 #include "wx/statbox.h"
  39 #include "wx/notebook.h"
  40 #include "wx/sysopt.h"
  41 #include "wx/image.h"
  42 #include "wx/dcmemory.h"
  43
  44 #include "wx/msw/private.h"
  45
  46 // ----------------------------------------------------------------------------
  47 // wxWin macros
  48 // ----------------------------------------------------------------------------
  49
  50 #if wxUSE_EXTENDED_RTTI
  51 WX_DEFINE_FLAGS( wxStaticBoxStyle )
  52
  53 wxBEGIN_FLAGS( wxStaticBoxStyle )
  54     // new style border flags, we put them first to
  55     // use them for streaming out
  56     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  57     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  58     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  59     wxFLAGS_MEMBER(wxBORDER_RAISED)
  60     wxFLAGS_MEMBER(wxBORDER_STATIC)
  61     wxFLAGS_MEMBER(wxBORDER_NONE)
  62
  63     // old style border flags
  64     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  65     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  66     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  67     wxFLAGS_MEMBER(wxRAISED_BORDER)
  68     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  69     wxFLAGS_MEMBER(wxBORDER)
  70
  71     // standard window styles
  72     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  73     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  74     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  75     wxFLAGS_MEMBER(wxWANTS_CHARS)
  76     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  77     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  78     wxFLAGS_MEMBER(wxVSCROLL)
  79     wxFLAGS_MEMBER(wxHSCROLL)
  80
  81 wxEND_FLAGS( wxStaticBoxStyle )
  82
  83 IMPLEMENT_DYNAMIC_CLASS_XTI(wxStaticBox, wxControl,"wx/statbox.h")
  84
  85 wxBEGIN_PROPERTIES_TABLE(wxStaticBox)
  86     wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
  87     wxPROPERTY_FLAGS( WindowStyle , wxStaticBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
  88 /*
  89     TODO PROPERTIES :
  90         label
  91 */
  92 wxEND_PROPERTIES_TABLE()
  93
  94 wxBEGIN_HANDLERS_TABLE(wxStaticBox)
  95 wxEND_HANDLERS_TABLE()
  96
  97 wxCONSTRUCTOR_6( wxStaticBox , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle )
  98 #else
  99 IMPLEMENT_DYNAMIC_CLASS(wxStaticBox, wxControl)
 100 #endif
 101
 102 // ============================================================================
 103 // implementation
 104 // ============================================================================
 105
 106 // ----------------------------------------------------------------------------
 107 // wxStaticBox
 108 // ----------------------------------------------------------------------------
 109
 110 bool wxStaticBox::Create(wxWindow *parent,
 111                          wxWindowID id,
 112                          const wxString& label,
 113                          const wxPoint& pos,
 114                          const wxSize& size,
 115                          long style,
 116                          const wxString& name)
 117 {
 118     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
 119         return false;
 120
 121     if ( !MSWCreateControl(wxT("BUTTON"), label, pos, size) )
 122         return false;
 123
 124 #ifndef __WXWINCE__
 125     Connect(wxEVT_PAINT, wxPaintEventHandler(wxStaticBox::OnPaint));
 126 #endif
 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         *exstyle = 0;
 146
 147     return styleWin | BS_GROUPBOX;
 148 }
 149
 150 wxSize wxStaticBox::DoGetBestSize() const
 151 {
 152     int cx, cy;
 153     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
 154
 155     int wBox;
 156     GetTextExtent(wxGetWindowText(m_hWnd), &wBox, &cy);
 157
 158     wBox += 3*cx;
 159     int hBox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
 160
 161     return wxSize(wBox, hBox);
 162 }
 163
 164 WXLRESULT wxStaticBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 165 {
 166 #ifndef __WXWINCE__
 167     if ( nMsg == WM_NCHITTEST )
 168     {
 169         // This code breaks some other processing such as enter/leave tracking
 170         // so it's off by default.
 171
 172         static int s_useHTClient = -1;
 173         if (s_useHTClient == -1)
 174             s_useHTClient = wxSystemOptions::GetOptionInt(wxT("msw.staticbox.htclient"));
 175         if (s_useHTClient == 1)
 176         {
 177             int xPos = LOWORD(lParam);  // horizontal position of cursor
 178             int yPos = HIWORD(lParam);  // vertical position of cursor
 179
 180             ScreenToClient(&xPos, &yPos);
 181
 182             // Make sure you can drag by the top of the groupbox, but let
 183             // other (enclosed) controls get mouse events also
 184             if ( yPos < 10 )
 185                 return (long)HTCLIENT;
 186         }
 187     }
 188 #endif // !__WXWINCE__
 189
 190     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 191 }
 192
 193 void wxStaticBox::GetBordersForSizer(int *borderTop, int *borderOther) const
 194 {
 195     wxStaticBoxBase::GetBordersForSizer(borderTop, borderOther);
 196
 197     // need extra space, don't know how much but this seems to be enough
 198     *borderTop += GetCharHeight()/3;
 199 }
 200
 201 // MSWGetRegionWithoutSelf helper: removes the given rectangle from region
 202 static inline void
 203 SubtractRectFromRgn(HRGN hrgn, int left, int top, int right, int bottom)
 204 {
 205     AutoHRGN hrgnRect(::CreateRectRgn(left, top, right, bottom));
 206     if ( !hrgnRect )
 207     {
 208         wxLogLastError(_T("CreateRectRgn()"));
 209         return;
 210     }
 211
 212     ::CombineRgn(hrgn, hrgn, hrgnRect, RGN_DIFF);
 213 }
 214
 215 void wxStaticBox::MSWGetRegionWithoutSelf(WXHRGN hRgn, int w, int h)
 216 {
 217     HRGN hrgn = (HRGN)hRgn;
 218
 219     // remove the area occupied by the static box borders from the region
 220     int borderTop, border;
 221     GetBordersForSizer(&borderTop, &border);
 222
 223     // top
 224     SubtractRectFromRgn(hrgn, 0, 0, w, borderTop);
 225
 226     // bottom
 227     SubtractRectFromRgn(hrgn, 0, h - border, w, h);
 228
 229     // left
 230     SubtractRectFromRgn(hrgn, 0, 0, border, h);
 231
 232     // right
 233     SubtractRectFromRgn(hrgn, w - border, 0, w, h);
 234 }
 235
 236 WXHRGN wxStaticBox::MSWGetRegionWithoutChildren()
 237 {
 238     RECT rc;
 239     ::GetWindowRect(GetHwnd(), &rc);
 240     HRGN hrgn = ::CreateRectRgn(rc.left, rc.top, rc.right + 1, rc.bottom + 1);
 241
 242     // iterate over all child windows (not just wxWindows but all windows)
 243     for ( HWND child = ::GetWindow(GetHwndOf(GetParent()), GW_CHILD);
 244           child;
 245           child = ::GetWindow(child, GW_HWNDNEXT) )
 246     {
 247         wxWindow *childWindow = wxGetWindowFromHWND((WXHWND) child);
 248
 249         // can't just test for (this != child) here since if a wxStaticBox
 250         // overlaps another wxStaticBox then neither are drawn. The overlapping
 251         // region will flicker but we shouldn't have overlapping windows anyway.
 252         if ( !childWindow || !wxDynamicCast(childWindow, wxStaticBox) )
 253         {
 254             ::GetWindowRect(child, &rc);
 255             if ( ::RectInRegion(hrgn, &rc) )
 256             {
 257                 // need to remove WS_CLIPSIBLINGS from all sibling windows
 258                 // that are within this staticbox if set
 259                 LONG style = ::GetWindowLong(child, GWL_STYLE);
 260                 if ( style & WS_CLIPSIBLINGS )
 261                 {
 262                     style &= ~WS_CLIPSIBLINGS;
 263                     ::SetWindowLong(child, GWL_STYLE, style);
 264
 265                     // MSDN: "If you have changed certain window data using
 266                     // SetWindowLong, you must call SetWindowPos to have the
 267                     // changes take effect."
 268                     ::SetWindowPos(child, NULL, 0, 0, 0, 0,
 269                                    SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
 270                                    SWP_FRAMECHANGED);
 271                 }
 272
 273                 AutoHRGN hrgnChild(::CreateRectRgnIndirect(&rc));
 274                 ::CombineRgn(hrgn, hrgn, hrgnChild, RGN_DIFF);
 275             }
 276         }
 277     }
 278
 279     return (WXHRGN)hrgn;
 280 }
 281
 282 // helper for OnPaint()
 283 void wxStaticBox::PaintBackground(wxDC& dc, const RECT& rc)
 284 {
 285     // note that static box should be transparent, so it should show its
 286     // parents colour, not its own
 287     wxWindow * const parent = GetParent();
 288
 289     HBRUSH hbr = (HBRUSH)parent->MSWGetBgBrush(dc.GetHDC());
 290     if ( !hbr )
 291     {
 292         wxBrush *brush =
 293             wxTheBrushList->FindOrCreateBrush(parent->GetBackgroundColour());
 294         if ( brush )
 295             hbr = GetHbrushOf(*brush);
 296     }
 297
 298     if ( hbr )
 299         ::FillRect(GetHdcOf(dc), &rc, hbr);
 300 }
 301
 302 void wxStaticBox::OnPaint(wxPaintEvent& WXUNUSED(event))
 303 {
 304     wxPaintDC dc(this);
 305     RECT rc;
 306     ::GetClientRect(GetHwnd(), &rc);
 307
 308     // draw the entire box in a memory DC, but only blit the bits not redrawn
 309     // either by our children windows nor by FillRect() painting the background
 310     // below
 311     wxMemoryDC memdc;
 312     wxBitmap bitmap(rc.right, rc.bottom);
 313     memdc.SelectObject(bitmap);
 314
 315     PaintBackground(memdc, rc);
 316     MSWDefWindowProc(WM_PAINT, (WPARAM)GetHdcOf(memdc), 0);
 317
 318     int borderTop, border;
 319     GetBordersForSizer(&borderTop, &border);
 320
 321     // top
 322     dc.Blit(border, 0, rc.right - border, borderTop,
 323             &memdc, border, 0);
 324     // bottom
 325     dc.Blit(border, rc.bottom - border, rc.right - border, rc.bottom,
 326             &memdc, border, rc.bottom - border);
 327     // left
 328     dc.Blit(0, 0, border, rc.bottom,
 329             &memdc, 0, 0);
 330     // right
 331     dc.Blit(rc.right - border, 0, rc.right, rc.bottom,
 332             &memdc, rc.right - border, 0);
 333
 334     AutoHRGN hrgn((HRGN)MSWGetRegionWithoutChildren());
 335     RECT rcWin;
 336     ::GetWindowRect(GetHwnd(), &rcWin);
 337     ::OffsetRgn(hrgn, -rcWin.left, -rcWin.top);
 338
 339
 340     // now remove the box itself
 341     MSWGetRegionWithoutSelf((WXHRGN) hrgn, rc.right, rc.bottom);
 342
 343     // and paint the inside of the box (excluding child controls)
 344     ::SelectClipRgn(GetHdcOf(dc), hrgn);
 345     PaintBackground(dc, rc);
 346     ::SelectClipRgn(GetHdcOf(dc), NULL);
 347 }
 348
 349 #endif // wxUSE_STATBOX
 350