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 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "statbmp.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 #ifndef WX_PRECOMP
  32     #include "wx/statbmp.h"
  33 #endif
  34
  35 #include <stdio.h>
  36 #include "wx/msw/private.h"
  37
  38 // ---------------------------------------------------------------------------
  39 // macors
  40 // ---------------------------------------------------------------------------
  41
  42 #if !USE_SHARED_LIBRARY
  43     IMPLEMENT_DYNAMIC_CLASS(wxStaticBitmap, wxControl)
  44 #endif
  45
  46 // ===========================================================================
  47 // implementation
  48 // ===========================================================================
  49
  50 // ---------------------------------------------------------------------------
  51 // wxStaticBitmap
  52 // ---------------------------------------------------------------------------
  53
  54 bool wxStaticBitmap::Create(wxWindow *parent, wxWindowID id,
  55                             const wxBitmap& bitmap,
  56                             const wxPoint& pos,
  57                             const wxSize& size,
  58                             long style,
  59                             const wxString& name)
  60 {
  61     Init();
  62
  63     SetName(name);
  64     if (parent)
  65         parent->AddChild(this);
  66
  67     m_backgroundColour = parent->GetBackgroundColour() ;
  68     m_foregroundColour = parent->GetForegroundColour() ;
  69
  70     if ( id == -1 )
  71         m_windowId = (int)NewControlId();
  72     else
  73         m_windowId = id;
  74
  75     int x = pos.x;
  76     int y = pos.y;
  77     int width = size.x;
  78     int height = size.y;
  79
  80     m_windowStyle = style;
  81
  82     m_isIcon = bitmap.IsKindOf(CLASSINFO(wxIcon));
  83
  84 #ifdef __WIN32__
  85     // create a static control with either SS_BITMAP or SS_ICON style depending
  86     // on what we have here
  87     const char *classname = "STATIC";
  88     int winstyle = m_isIcon ? SS_ICON : SS_BITMAP;
  89 #else // Win16
  90     const char *classname = "BUTTON";
  91     int winstyle = BS_OWNERDRAW;
  92 #endif // Win32
  93
  94     m_hWnd = (WXHWND)::CreateWindow
  95                        (
  96                         classname,
  97                         "",
  98                         winstyle | WS_CHILD | WS_VISIBLE,
  99                         0, 0, 0, 0,
 100                         (HWND)parent->GetHWND(),
 101                         (HMENU)m_windowId,
 102                         wxGetInstance(),
 103                         NULL
 104                        );
 105
 106     wxCHECK_MSG( m_hWnd, FALSE, "Failed to create static bitmap" );
 107
 108     SetBitmap(bitmap);
 109
 110     // Subclass again for purposes of dialog editing mode
 111     SubclassWin(m_hWnd);
 112
 113     SetFont(GetParent()->GetFont());
 114
 115     SetSize(x, y, width, height);
 116
 117     return TRUE;
 118 }
 119
 120 bool wxStaticBitmap::ImageIsOk() const
 121 {
 122     if ( m_isIcon && m_image.icon )
 123         return m_image.icon->Ok();
 124     else if ( m_image.bitmap )
 125         return m_image.bitmap->Ok();
 126     else
 127         return FALSE;
 128 }
 129
 130 void wxStaticBitmap::Free()
 131 {
 132     if ( m_isIcon )
 133         delete m_image.icon;
 134     else
 135         delete m_image.bitmap;
 136
 137     m_image.icon = NULL;
 138 }
 139
 140 void wxStaticBitmap::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 141 {
 142     int currentX, currentY;
 143     GetPosition(&currentX, &currentY);
 144     int x1 = x;
 145     int y1 = y;
 146
 147     if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 148         x1 = currentX;
 149     if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 150         y1 = currentY;
 151
 152     AdjustForParentClientOrigin(x1, y1, sizeFlags);
 153
 154     int actualWidth = width;
 155     int actualHeight = height;
 156
 157     int ww, hh;
 158     GetSize(&ww, &hh);
 159
 160     // If we're prepared to use the existing width, then...
 161     if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
 162         actualWidth = ww;
 163     else
 164         actualWidth = width;
 165
 166     // If we're prepared to use the existing height, then...
 167     if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
 168         actualHeight = hh;
 169     else
 170         actualHeight = height;
 171
 172     MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
 173 }
 174
 175 void wxStaticBitmap::SetBitmap(const wxBitmap& bitmap)
 176 {
 177     Free();
 178
 179     m_isIcon = bitmap.IsKindOf(CLASSINFO(wxIcon));
 180     if ( m_isIcon )
 181         m_image.icon = new wxIcon((const wxIcon&)bitmap);
 182     else
 183         m_image.bitmap = new wxBitmap(bitmap);
 184
 185     int x, y;
 186     int w, h;
 187     GetPosition(&x, &y);
 188     GetSize(&w, &h);
 189     RECT rect = { x, y, x + w, y + h };
 190
 191 #ifdef __WIN32__
 192     HANDLE handle = m_isIcon ? (HANDLE)m_image.icon->GetHICON()
 193                              : (HANDLE)m_image.bitmap->GetHBITMAP();
 194     ::SendMessage((HWND)m_hWnd, STM_SETIMAGE,
 195                   m_isIcon ? IMAGE_ICON : IMAGE_BITMAP, (LPARAM)handle);
 196 #endif // Win32
 197
 198     if ( ImageIsOk() )
 199     {
 200         int width = bitmap.GetWidth(),
 201             height = bitmap.GetHeight();
 202         if ( width && height )
 203         {
 204             ::MoveWindow((HWND)GetHWND(), x, y, width, height, FALSE);
 205         }
 206     }
 207
 208     InvalidateRect((HWND)GetParent()->GetHWND(), &rect, TRUE);
 209 }
 210
 211 // under Win32 we use the standard static control style for this
 212 #ifdef __WIN16__
 213 bool wxStaticBitmap::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 214 {
 215     LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
 216
 217     wxBitmap* bitmap = m_image.bitmap;
 218     if ( !bitmap->Ok() )
 219         return FALSE;
 220
 221     HDC hDC = lpDIS->hDC;
 222     HDC memDC = ::CreateCompatibleDC(hDC);
 223
 224     HBITMAP old = (HBITMAP) ::SelectObject(memDC, (HBITMAP) bitmap->GetHBITMAP());
 225
 226     if (!old)
 227         return FALSE;
 228
 229     int x = lpDIS->rcItem.left;
 230     int y = lpDIS->rcItem.top;
 231     int width = lpDIS->rcItem.right - x;
 232     int height = lpDIS->rcItem.bottom - y;
 233
 234     // Centre the bitmap in the control area
 235     int x1 = (int) (x + ((width - bitmap->GetWidth()) / 2));
 236     int y1 = (int) (y + ((height - bitmap->GetHeight()) / 2));
 237
 238     ::BitBlt(hDC, x1, y1, bitmap->GetWidth(), bitmap->GetHeight(), memDC, 0, 0, SRCCOPY);
 239
 240     ::SelectObject(memDC, old);
 241
 242     ::DeleteDC(memDC);
 243
 244     return TRUE;
 245 }
 246
 247 long wxStaticBitmap::MSWWindowProc(WXUINT nMsg,
 248                                    WXWPARAM wParam,
 249                                    WXLPARAM lParam)
 250 {
 251     // Ensure that static items get messages. Some controls don't like this
 252     // message to be intercepted (e.g. RichEdit), hence the tests.
 253     if ( nMsg == WM_NCHITTEST )
 254         return (long)HTCLIENT;
 255
 256     return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
 257 }
 258 #endif // Win16