src/msw/statbmp.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        statbmp.cpp
   3 // Purpose:     wxStaticBitmap
   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 "statbmp.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/statbmp.h"
  25 #endif
  26
  27 #include <stdio.h>
  28 #include "wx/msw/private.h"
  29
  30 #if !USE_SHARED_LIBRARY
  31 IMPLEMENT_DYNAMIC_CLASS(wxStaticBitmap, wxControl)
  32 #endif
  33
  34 /*
  35  * wxStaticBitmap
  36  */
  37
  38 bool wxStaticBitmap::Create(wxWindow *parent, wxWindowID id,
  39            const wxBitmap& bitmap,
  40            const wxPoint& pos,
  41            const wxSize& size,
  42            long style,
  43            const wxString& name)
  44 {
  45   m_messageBitmap = bitmap;
  46   SetName(name);
  47   if (parent) parent->AddChild(this);
  48
  49   m_backgroundColour = parent->GetDefaultBackgroundColour() ;
  50   m_foregroundColour = parent->GetDefaultForegroundColour() ;
  51
  52   if ( id == -1 )
  53         m_windowId = (int)NewControlId();
  54   else
  55         m_windowId = id;
  56
  57   int x = pos.x;
  58   int y = pos.y;
  59   int width = size.x;
  60   int height = size.y;
  61
  62   if ( width < 0 && bitmap.Ok() )
  63         width = bitmap.GetWidth();
  64   if ( height < 0 && bitmap.Ok() )
  65         height = bitmap.GetHeight();
  66
  67   m_windowStyle = style;
  68
  69   // Use an ownerdraw button to produce a static bitmap, since there's
  70   // no ownerdraw static.
  71   // TODO: perhaps this should be a static item, with style SS_BITMAP.
  72   HWND static_item =
  73     CreateWindowEx(0, "BUTTON", "", BS_OWNERDRAW | WS_TABSTOP | WS_CHILD,
  74                     0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
  75                     wxGetInstance(), NULL);
  76   m_hWnd = (WXHWND) static_item;
  77
  78   // Subclass again for purposes of dialog editing mode
  79   SubclassWin((WXHWND) static_item);
  80   SetSize(x, y, width, height);
  81   return TRUE;
  82 }
  83
  84 void wxStaticBitmap::SetSize(int x, int y, int width, int height, int sizeFlags)
  85 {
  86   int currentX, currentY;
  87   GetPosition(&currentX, &currentY);
  88   int x1 = x;
  89   int y1 = y;
  90
  91   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
  92     x1 = currentX;
  93   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
  94     y1 = currentY;
  95
  96   int actualWidth = width;
  97   int actualHeight = height;
  98
  99   int ww, hh;
 100   GetSize(&ww, &hh);
 101
 102   // If we're prepared to use the existing width, then...
 103   if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
 104     actualWidth = ww;
 105   else actualWidth = width;
 106
 107   // If we're prepared to use the existing height, then...
 108   if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
 109     actualHeight = hh;
 110   else actualHeight = height;
 111
 112   MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
 113 }
 114
 115 void wxStaticBitmap::SetBitmap(const wxBitmap& bitmap)
 116 {
 117   m_messageBitmap = bitmap;
 118
 119   int x, y;
 120   int w, h;
 121   GetPosition(&x, &y);
 122   GetSize(&w, &h);
 123   RECT rect;
 124   rect.left = x; rect.top = y; rect.right = x + w; rect.bottom = y + h;
 125
 126   if ( bitmap.Ok() )
 127         MoveWindow((HWND) GetHWND(), x, y, bitmap.GetWidth(), bitmap.GetHeight(),
 128              FALSE);
 129
 130   InvalidateRect((HWND) GetParent()->GetHWND(), &rect, TRUE);
 131 }
 132
 133 bool wxStaticBitmap::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 134 {
 135         long style = GetWindowLong((HWND) GetHWND(), GWL_STYLE);
 136 #ifdef __WIN32__
 137         if ((style & 0xFF) == SS_BITMAP)
 138         {
 139                 // Should we call Default() here?
 140 //              Default();
 141
 142                 // Let default procedure draw the bitmap, which is defined
 143                 // in the Windows resource.
 144                 return FALSE;
 145         }
 146 #endif
 147
 148     LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
 149
 150         wxBitmap* bitmap = &m_messageBitmap;
 151         if ( !bitmap->Ok() )
 152                 return FALSE;
 153
 154         HDC hDC = lpDIS->hDC;
 155         HDC memDC = ::CreateCompatibleDC(hDC);
 156
 157         HBITMAP old = ::SelectObject(memDC, (HBITMAP) bitmap->GetHBITMAP());
 158
 159         if (!old)
 160                 return FALSE;
 161
 162         RECT rect = lpDIS->rcItem;
 163
 164         int x = lpDIS->rcItem.left;
 165         int y = lpDIS->rcItem.top;
 166         int width = lpDIS->rcItem.right - x;
 167         int height = lpDIS->rcItem.bottom - y;
 168
 169         // Centre the bitmap in the control area
 170         int x1 = (int) (x + ((width - bitmap->GetWidth()) / 2));
 171         int y1 = (int) (y + ((height - bitmap->GetHeight()) / 2));
 172
 173         ::BitBlt(hDC, x1, y1, bitmap->GetWidth(), bitmap->GetHeight(), memDC, 0, 0, SRCCOPY);
 174
 175         ::SelectObject(memDC, old);
 176
 177     ::DeleteDC(memDC);
 178
 179     return TRUE;
 180 }
 181
 182 long wxStaticBitmap::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 183 {
 184   // Ensure that static items get messages. Some controls don't like this
 185   // message to be intercepted (e.g. RichEdit), hence the tests.
 186   if (nMsg == WM_NCHITTEST)
 187     return (long)HTCLIENT;
 188
 189   return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
 190 }
 191