src/msw/statbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 and Markus Holzem
   9 // Licence:       wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "statbox.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #include "wx/window.h"
  24 #include "wx/msw/private.h"
  25
  26 #ifndef WX_PRECOMP
  27 #include "wx/app.h"
  28 #include "wx/dcclient.h"
  29 #endif
  30
  31 #include "wx/statbox.h"
  32
  33 #if !USE_SHARED_LIBRARY
  34 IMPLEMENT_DYNAMIC_CLASS(wxStaticBox, wxControl)
  35
  36 BEGIN_EVENT_TABLE(wxStaticBox, wxControl)
  37     EVT_ERASE_BACKGROUND(wxStaticBox::OnEraseBackground)
  38 END_EVENT_TABLE()
  39
  40 #endif
  41
  42 /*
  43  * Group box
  44  */
  45
  46 bool wxStaticBox::Create(wxWindow *parent, wxWindowID id,
  47            const wxString& label,
  48            const wxPoint& pos,
  49            const wxSize& size,
  50            long style,
  51            const wxString& name)
  52 {
  53   SetName(name);
  54
  55   if (parent) parent->AddChild(this);
  56
  57   SetBackgroundColour(parent->GetBackgroundColour()) ;
  58   SetForegroundColour(parent->GetForegroundColour()) ;
  59
  60   if ( id == -1 )
  61       m_windowId = (int)NewControlId();
  62   else
  63     m_windowId = id;
  64
  65   int x = pos.x;
  66   int y = pos.y;
  67   int width = size.x;
  68   int height = size.y;
  69
  70   m_windowStyle = style;
  71
  72   long msStyle = BS_GROUPBOX | WS_CHILD | WS_VISIBLE ; // GROUP_FLAGS;
  73
  74   bool want3D;
  75   WXDWORD exStyle = Determine3DEffects(0, &want3D) ;
  76
  77   HWND wx_button =
  78     CreateWindowEx(exStyle, _T("BUTTON"), (const wxChar *)label, msStyle,
  79                     0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
  80                     wxGetInstance(), NULL);
  81 #if wxUSE_CTL3D
  82   if (want3D)
  83   {
  84     Ctl3dSubclassCtl(wx_button);
  85       m_useCtl3D = TRUE;
  86   }
  87 #endif
  88
  89   m_hWnd = (WXHWND)wx_button;
  90
  91   // Subclass again for purposes of dialog editing mode
  92   SubclassWin(GetHWND());
  93
  94   SetFont(parent->GetFont());
  95
  96   SetSize(x, y, width, height);
  97   ShowWindow(wx_button, SW_SHOW);
  98
  99   return TRUE;
 100 }
 101
 102 void wxStaticBox::SetLabel(const wxString& label)
 103 {
 104   SetWindowText((HWND)m_hWnd, (const wxChar *)label);
 105 }
 106
 107 void wxStaticBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 108 {
 109   int currentX, currentY;
 110   GetPosition(&currentX, &currentY);
 111
 112   int x1 = x;
 113   int y1 = y;
 114   int w1 = width;
 115   int h1 = height;
 116
 117   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 118     x1 = currentX;
 119   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 120     y1 = currentY;
 121
 122   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 123
 124   // If we're prepared to use the existing size, then...
 125   if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 126   {
 127     GetSize(&w1, &h1);
 128   }
 129
 130   int current_width;
 131
 132   int cx;
 133   int cy;
 134   int cyf;
 135
 136   wxGetCharSize(GetHWND(), &cx, &cy, & this->GetFont());
 137
 138   GetTextExtent(wxGetWindowText(m_hWnd), &current_width, &cyf,
 139                 NULL,NULL, & this->GetFont());
 140   if ( w1 < 0 )
 141    w1 = current_width + 3*cx;
 142   if ( h1 < 0 )
 143     h1 = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cyf);
 144
 145   MoveWindow((HWND)m_hWnd, x1, y1, w1, h1, TRUE);
 146 }
 147
 148 WXHBRUSH wxStaticBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 149             WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 150 {
 151 #if wxUSE_CTL3D
 152   if ( m_useCtl3D )
 153   {
 154     HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 155     return (WXHBRUSH) hbrush;
 156   }
 157 #endif
 158
 159   if (GetParent()->GetTransparentBackground())
 160     SetBkMode((HDC) pDC, TRANSPARENT);
 161   else
 162     SetBkMode((HDC) pDC, OPAQUE);
 163
 164   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 165   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 166
 167   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 168
 169   // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 170   // has a zero usage count.
 171 //  backgroundBrush->RealizeResource();
 172   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 173 }
 174
 175 // Shouldn't erase the whole window, since the static box must only paint its
 176 // outline.
 177 void wxStaticBox::OnEraseBackground(wxEraseEvent& event)
 178 {
 179     // If we don't have this (call Default()), we don't paint the background properly.
 180     // If we do have this, we seem to overwrite enclosed controls.
 181     // Is it the WS_CLIPCHILDREN style that's causing the problems?
 182     // Probably - without this style, the background of the window will show through,
 183     // so the control doesn't have to paint it. The window background will always be
 184     // painted before all other controls, therefore there are no problems with
 185     // controls being hidden by the static box.
 186     // So, if we could specify wxCLIP_CHILDREN in window, or not, we could optimise painting better.
 187     // We would assume wxCLIP_CHILDREN in a frame and a scrolled window, but not in a panel.
 188     // Is this too platform-specific?? What else can we do? Not a lot, since we have to pass
 189     // this information from arbitrary wxWindow derivatives, and it depends on what you wish to
 190     // do with the windows.
 191     // Alternatively, just make sure that wxStaticBox is always at the back! There are probably
 192     // few other circumstances where it matters about child clipping. But what about painting onto
 193     // to panel, inside a groupbox? Doesn't appear, because the box wipes it out.
 194   wxWindow *parent = GetParent();
 195   if ( parent && parent->GetHWND() && (::GetWindowLong((HWND) parent->GetHWND(), GWL_STYLE) & WS_CLIPCHILDREN) )
 196   {
 197         // TODO: May in fact need to generate a paint event for inside this
 198         // control's rectangle, otherwise all controls are going to be clipped -
 199         // ugh.
 200         HBRUSH hBrush = ::CreateSolidBrush(PALETTERGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 201         int mode = ::SetMapMode((HDC) event.GetDC()->GetHDC(), MM_TEXT);
 202
 203         RECT rect;
 204
 205         ::GetClientRect((HWND) GetHWND(), &rect);
 206         ::FillRect ((HDC) event.GetDC()->GetHDC(), &rect, hBrush);
 207         ::DeleteObject(hBrush);
 208         ::SetMapMode((HDC) event.GetDC()->GetHDC(), mode);
 209   }
 210   else
 211   {
 212     event.Skip();
 213   }
 214 }
 215
 216 long wxStaticBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 217 {
 218     if (nMsg == WM_NCHITTEST)
 219     {
 220         int xPos = LOWORD(lParam);  // horizontal position of cursor
 221         int yPos = HIWORD(lParam);  // vertical position of cursor
 222
 223         ScreenToClient(&xPos, &yPos);
 224
 225         // Make sure you can drag by the top of the groupbox, but let
 226         // other (enclosed) controls get mouse events also
 227         if (yPos < 10)
 228             return (long)HTCLIENT;
 229     }
 230
 231     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 232 }
 233