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->GetBackgroundColour() ;
  50   m_foregroundColour = parent->GetForegroundColour() ;
  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   m_hWnd = (WXHWND)CreateWindow
  73            (
  74             "BUTTON",
  75             "",
  76             BS_OWNERDRAW | WS_TABSTOP | WS_CHILD | WS_VISIBLE,
  77             0, 0, 0, 0,
  78             (HWND)parent->GetHWND(),
  79             (HMENU)m_windowId,
  80             wxGetInstance(),
  81             NULL
  82            );
  83
  84   // Subclass again for purposes of dialog editing mode
  85   SubclassWin(m_hWnd);
  86
  87   SetFont(GetParent()->GetFont());
  88
  89   SetSize(x, y, width, height);
  90   return TRUE;
  91 }
  92
  93 void wxStaticBitmap::SetSize(int x, int y, int width, int height, int sizeFlags)
  94 {
  95   int currentX, currentY;
  96   GetPosition(&currentX, &currentY);
  97   int x1 = x;
  98   int y1 = y;
  99
 100   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 101     x1 = currentX;
 102   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 103     y1 = currentY;
 104
 105   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 106
 107   int actualWidth = width;
 108   int actualHeight = height;
 109
 110   int ww, hh;
 111   GetSize(&ww, &hh);
 112
 113   // If we're prepared to use the existing width, then...
 114   if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
 115     actualWidth = ww;
 116   else actualWidth = width;
 117
 118   // If we're prepared to use the existing height, then...
 119   if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
 120     actualHeight = hh;
 121   else actualHeight = height;
 122
 123   MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
 124 }
 125
 126 void wxStaticBitmap::SetBitmap(const wxBitmap& bitmap)
 127 {
 128   m_messageBitmap = bitmap;
 129
 130   int x, y;
 131   int w, h;
 132   GetPosition(&x, &y);
 133   GetSize(&w, &h);
 134   RECT rect;
 135   rect.left = x; rect.top = y; rect.right = x + w; rect.bottom = y + h;
 136
 137   if ( bitmap.Ok() )
 138     MoveWindow((HWND) GetHWND(), x, y, bitmap.GetWidth(), bitmap.GetHeight(),
 139              FALSE);
 140
 141   InvalidateRect((HWND) GetParent()->GetHWND(), &rect, TRUE);
 142 }
 143
 144 bool wxStaticBitmap::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 145 {
 146     long style = GetWindowLong((HWND) GetHWND(), GWL_STYLE);
 147 #ifdef __WIN32__
 148     if ((style & 0xFF) == SS_BITMAP)
 149     {
 150         // Should we call Default() here?
 151 //      Default();
 152
 153         // Let default procedure draw the bitmap, which is defined
 154         // in the Windows resource.
 155         return FALSE;
 156     }
 157 #endif
 158
 159     LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
 160
 161     wxBitmap* bitmap = &m_messageBitmap;
 162     if ( !bitmap->Ok() )
 163         return FALSE;
 164
 165     HDC hDC = lpDIS->hDC;
 166     HDC memDC = ::CreateCompatibleDC(hDC);
 167
 168     HBITMAP old = (HBITMAP) ::SelectObject(memDC, (HBITMAP) bitmap->GetHBITMAP());
 169
 170     if (!old)
 171         return FALSE;
 172
 173         int x = lpDIS->rcItem.left;
 174         int y = lpDIS->rcItem.top;
 175         int width = lpDIS->rcItem.right - x;
 176         int height = lpDIS->rcItem.bottom - y;
 177
 178     // Centre the bitmap in the control area
 179     int x1 = (int) (x + ((width - bitmap->GetWidth()) / 2));
 180     int y1 = (int) (y + ((height - bitmap->GetHeight()) / 2));
 181
 182     ::BitBlt(hDC, x1, y1, bitmap->GetWidth(), bitmap->GetHeight(), memDC, 0, 0, SRCCOPY);
 183
 184     ::SelectObject(memDC, old);
 185
 186     ::DeleteDC(memDC);
 187
 188     return TRUE;
 189 }
 190
 191 long wxStaticBitmap::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 192 {
 193   // Ensure that static items get messages. Some controls don't like this
 194   // message to be intercepted (e.g. RichEdit), hence the tests.
 195   if (nMsg == WM_NCHITTEST)
 196     return (long)HTCLIENT;
 197
 198   return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
 199 }
 200