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 #ifndef WX_PRECOMP
  24 #include "wx/dcclient.h"
  25 #include "wx/app.h"
  26 #endif
  27
  28 #include "wx/statbox.h"
  29 #include "wx/msw/private.h"
  30
  31 #if !USE_SHARED_LIBRARY
  32 IMPLEMENT_DYNAMIC_CLASS(wxStaticBox, wxControl)
  33
  34 BEGIN_EVENT_TABLE(wxStaticBox, wxControl)
  35         EVT_ERASE_BACKGROUND(wxStaticBox::OnEraseBackground)
  36 END_EVENT_TABLE()
  37
  38 #endif
  39
  40 /*
  41  * Group box
  42  */
  43
  44 bool wxStaticBox::Create(wxWindow *parent, wxWindowID id,
  45            const wxString& label,
  46            const wxPoint& pos,
  47            const wxSize& size,
  48            long style,
  49            const wxString& name)
  50 {
  51   SetName(name);
  52
  53   if (parent) parent->AddChild(this);
  54
  55   SetBackgroundColour(parent->GetDefaultBackgroundColour()) ;
  56   SetForegroundColour(parent->GetDefaultForegroundColour()) ;
  57
  58   if ( id == -1 )
  59         m_windowId = (int)NewControlId();
  60   else
  61         m_windowId = id;
  62
  63   int x = pos.x;
  64   int y = pos.y;
  65   int width = size.x;
  66   int height = size.y;
  67
  68   m_windowStyle = style;
  69
  70   long msStyle = BS_GROUPBOX | WS_CHILD | WS_VISIBLE ; // GROUP_FLAGS;
  71
  72   bool want3D;
  73   WXDWORD exStyle = Determine3DEffects(0, &want3D) ;
  74
  75   HWND wx_button =
  76     CreateWindowEx(exStyle, "BUTTON", (const char *)label, msStyle,
  77                     0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
  78                     wxGetInstance(), NULL);
  79 #if CTL3D
  80   if (want3D)
  81   {
  82     Ctl3dSubclassCtl(wx_button);
  83           m_useCtl3D = TRUE;
  84   }
  85 #endif
  86
  87   m_hWnd = (WXHWND)wx_button;
  88
  89   // Subclass again for purposes of dialog editing mode
  90   SubclassWin(GetHWND());
  91
  92   SetFont(* parent->GetFont());
  93
  94   SetSize(x, y, width, height);
  95   ShowWindow(wx_button, SW_SHOW);
  96
  97   return TRUE;
  98 }
  99
 100 void wxStaticBox::SetLabel(const wxString& label)
 101 {
 102   SetWindowText((HWND)m_hWnd, (const char *)label);
 103 }
 104
 105 void wxStaticBox::SetSize(int x, int y, int width, int height, int sizeFlags)
 106 {
 107   int currentX, currentY;
 108   GetPosition(&currentX, &currentY);
 109
 110   int x1 = x;
 111   int y1 = y;
 112   int w1 = width;
 113   int h1 = height;
 114
 115   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 116     x1 = currentX;
 117   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 118     y1 = currentY;
 119
 120   // If we're prepared to use the existing size, then...
 121   if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 122   {
 123     GetSize(&w1, &h1);
 124   }
 125
 126   char buf[300];
 127
 128   int current_width;
 129
 130   int cx;
 131   int cy;
 132   int cyf;
 133
 134   HWND button = (HWND)m_hWnd;
 135   wxGetCharSize(GetHWND(), &cx, &cy,GetFont());
 136
 137   GetWindowText(button, buf, 300);
 138   GetTextExtent(buf, &current_width, &cyf,NULL,NULL,GetFont());
 139   if (w1 < 0)
 140    w1 = (int)(current_width + 3*cx) ;
 141   if (h1<0)
 142     h1 = (int)(cyf*EDIT_CONTROL_FACTOR) ;
 143   MoveWindow(button, x1, y1, w1, h1, TRUE);
 144 }
 145
 146 WXHBRUSH wxStaticBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 147                         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 148 {
 149 #if CTL3D
 150   if ( m_useCtl3D )
 151   {
 152     HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 153     return (WXHBRUSH) hbrush;
 154   }
 155 #endif
 156
 157   if (GetParent()->GetTransparentBackground())
 158     SetBkMode((HDC) pDC, TRANSPARENT);
 159   else
 160     SetBkMode((HDC) pDC, OPAQUE);
 161
 162   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 163   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 164
 165   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 166
 167   // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
 168   // has a zero usage count.
 169 //  backgroundBrush->RealizeResource();
 170   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 171 }
 172
 173 // Shouldn't erase the whole window, since the static box must only paint its
 174 // outline.
 175 void wxStaticBox::OnEraseBackground(wxEraseEvent& event)
 176 {
 177     // If we don't have this (call Default()), we don't paint the background properly.
 178     // If we do have this, we seem to overwrite enclosed controls.
 179     // Is it the WS_CLIPCHILDREN style that's causing the problems?
 180     // Probably - without this style, the background of the window will show through,
 181     // so the control doesn't have to paint it. The window background will always be
 182     // painted before all other controls, therefore there are no problems with
 183     // controls being hidden by the static box.
 184     // So, if we could specify wxCLIP_CHILDREN in window, or not, we could optimise painting better.
 185     // We would assume wxCLIP_CHILDREN in a frame and a scrolled window, but not in a panel.
 186     // Is this too platform-specific?? What else can we do? Not a lot, since we have to pass
 187     // this information from arbitrary wxWindow derivatives, and it depends on what you wish to
 188     // do with the windows.
 189     // Alternatively, just make sure that wxStaticBox is always at the back! There are probably
 190     // few other circumstances where it matters about child clipping. But what about painting onto
 191     // to panel, inside a groupbox? Doesn't appear, because the box wipes it out.
 192   wxWindow *parent = GetParent();
 193   if ( parent && parent->GetHWND() && (::GetWindowLong((HWND) parent->GetHWND(), GWL_STYLE) & WS_CLIPCHILDREN) )
 194   {
 195         // TODO: May in fact need to generate a paint event for inside this
 196         // control's rectangle, otherwise all controls are going to be clipped -
 197         // ugh.
 198         HBRUSH hBrush = ::CreateSolidBrush(PALETTERGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 199         int mode = ::SetMapMode((HDC) event.GetDC()->GetHDC(), MM_TEXT);
 200
 201         RECT rect;
 202
 203         ::GetClientRect((HWND) GetHWND(), &rect);
 204         ::FillRect ((HDC) event.GetDC()->GetHDC(), &rect, hBrush);
 205         ::DeleteObject(hBrush);
 206         ::SetMapMode((HDC) event.GetDC()->GetHDC(), mode);
 207   }
 208   else
 209         Default();
 210 }
 211
 212 long wxStaticBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 213 {
 214         // TODO: somehow, this has to accept mouse clicks in user interface edit mode,
 215         // but not otherwise. Only there is no longer a UI edit mode...
 216
 217         // It worked before because the message could be processed if not in UI
 218         // edit mode. We have to find some way of distinguishing this.
 219         // Maybe this class can have an AcceptMouseEvents(bool) function; a sort of
 220         // kludge... or, we can search for an active event table entry that will
 221         // intercept mouse events, and if one exists (that isn't the default),
 222         // skip the code below. Too time consuming though.
 223         // Perhaps it's ok to do the default thing *anyway* because the title or edge
 224         // of the window may still be active!
 225 //      if (nMsg == WM_NCHITTEST)
 226 //            return Default();
 227
 228         if (nMsg == WM_NCHITTEST)
 229     {
 230         int xPos = LOWORD(lParam);  // horizontal position of cursor
 231         int yPos = HIWORD(lParam);  // vertical position of cursor
 232
 233         ScreenToClient(&xPos, &yPos);
 234
 235         // Make sure you can drag by the top of the groupbox, but let
 236         // other (enclosed) controls get mouse events also
 237         if (yPos < 10)
 238             return (long)HTCLIENT;
 239     }
 240
 241         return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 242 }
 243