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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/msw/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
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ===========================================================================
13 // declarations
14 // ===========================================================================
15
16 // ---------------------------------------------------------------------------
17 // headers
18 // ---------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #if wxUSE_STATBMP
28
29 #include "wx/statbmp.h"
30
31 #ifndef WX_PRECOMP
32 #include "wx/window.h"
33 #include "wx/icon.h"
34 #include "wx/dcclient.h"
35 #endif
36
37 #include "wx/msw/private.h"
38
39 #include "wx/sysopt.h"
40
41 #include <stdio.h>
42
43 // ---------------------------------------------------------------------------
44 // macors
45 // ---------------------------------------------------------------------------
46
47 #if wxUSE_EXTENDED_RTTI
48 WX_DEFINE_FLAGS( wxStaticBitmapStyle )
49
50 wxBEGIN_FLAGS( wxStaticBitmapStyle )
51 // new style border flags, we put them first to
52 // use them for streaming out
53 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
54 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
55 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
56 wxFLAGS_MEMBER(wxBORDER_RAISED)
57 wxFLAGS_MEMBER(wxBORDER_STATIC)
58 wxFLAGS_MEMBER(wxBORDER_NONE)
59
60 // old style border flags
61 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
62 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
63 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
64 wxFLAGS_MEMBER(wxRAISED_BORDER)
65 wxFLAGS_MEMBER(wxSTATIC_BORDER)
66 wxFLAGS_MEMBER(wxBORDER)
67
68 // standard window styles
69 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
70 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
71 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
72 wxFLAGS_MEMBER(wxWANTS_CHARS)
73 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
74 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
75 wxFLAGS_MEMBER(wxVSCROLL)
76 wxFLAGS_MEMBER(wxHSCROLL)
77
78 wxEND_FLAGS( wxStaticBitmapStyle )
79
80 IMPLEMENT_DYNAMIC_CLASS_XTI(wxStaticBitmap, wxControl,"wx/statbmp.h")
81
82 wxBEGIN_PROPERTIES_TABLE(wxStaticBitmap)
83 wxPROPERTY_FLAGS( WindowStyle , wxStaticBitmapStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
84 wxEND_PROPERTIES_TABLE()
85
86 wxBEGIN_HANDLERS_TABLE(wxStaticBitmap)
87 wxEND_HANDLERS_TABLE()
88
89 wxCONSTRUCTOR_5( wxStaticBitmap, wxWindow* , Parent , wxWindowID , Id , wxBitmap, Bitmap, wxPoint , Position , wxSize , Size )
90
91 #else
92 IMPLEMENT_DYNAMIC_CLASS(wxStaticBitmap, wxControl)
93 #endif
94
95 /*
96 TODO PROPERTIES :
97 bitmap
98 */
99
100 // ===========================================================================
101 // implementation
102 // ===========================================================================
103
104 // ---------------------------------------------------------------------------
105 // wxStaticBitmap
106 // ---------------------------------------------------------------------------
107
108 // we may have either bitmap or icon: if a bitmap with mask is passed, we
109 // will transform it to an icon ourselves because otherwise the mask will
110 // be ignored by Windows
111 // note that this function will create a new object every time
112 // it is called even if the image needs no conversion
113
114 static wxGDIImage* ConvertImage( const wxGDIImage& bitmap )
115 {
116 bool isIcon = bitmap.IsKindOf( CLASSINFO(wxIcon) );
117
118 if( !isIcon )
119 {
120 wxASSERT_MSG( wxDynamicCast(&bitmap, wxBitmap),
121 _T("not an icon and not a bitmap?") );
122
123 const wxBitmap& bmp = (const wxBitmap&)bitmap;
124 wxMask *mask = bmp.GetMask();
125 if ( mask && mask->GetMaskBitmap() )
126 {
127 wxIcon* icon = new wxIcon;
128 icon->CopyFromBitmap(bmp);
129
130 return icon;
131 }
132
133 return new wxBitmap( bmp );
134 }
135
136 // copying a bitmap is a cheap operation
137 return new wxIcon( (const wxIcon&)bitmap );
138 }
139
140 bool wxStaticBitmap::Create(wxWindow *parent,
141 wxWindowID id,
142 const wxGDIImage& bitmap,
143 const wxPoint& pos,
144 const wxSize& size,
145 long style,
146 const wxString& name)
147 {
148 if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
149 return false;
150
151 // we may have either bitmap or icon: if a bitmap with mask is passed, we
152 // will transform it to an icon ourselves because otherwise the mask will
153 // be ignored by Windows
154 m_isIcon = bitmap.IsKindOf(CLASSINFO(wxIcon));
155
156 wxGDIImage *image = ConvertImage( bitmap );
157 m_isIcon = image->IsKindOf( CLASSINFO(wxIcon) );
158
159 // create the native control
160 if ( !MSWCreateControl(_T("STATIC"), wxEmptyString, pos, size) )
161 {
162 // control creation failed
163 return false;
164 }
165
166 // no need to delete the new image
167 SetImageNoCopy(image);
168
169 // GetBestSize will work properly now, so set the best size if needed
170 SetInitialSize(size);
171
172 // Win9x and 2000 don't draw correctly the images with alpha channel so we
173 // need to draw them ourselves and it's easier to just always do it rather
174 // than check if we have an image with alpha or not
175 if ( wxGetWinVersion() <= wxWinVersion_2000 )
176 {
177 Connect(wxEVT_PAINT, wxPaintEventHandler(wxStaticBitmap::DoPaintManually));
178 }
179
180 return true;
181 }
182
183 WXDWORD wxStaticBitmap::MSWGetStyle(long style, WXDWORD *exstyle) const
184 {
185 WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
186
187 // what kind of control are we?
188 msStyle |= m_isIcon ? SS_ICON : SS_BITMAP;
189
190 // we use SS_CENTERIMAGE to prevent the control from resizing the bitmap to
191 // fit to its size -- this is unexpected and doesn't happen in other ports
192 //
193 // and SS_NOTIFY is necessary to receive mouse events
194 msStyle |= SS_CENTERIMAGE | SS_NOTIFY;
195
196 return msStyle;
197 }
198
199 bool wxStaticBitmap::ImageIsOk() const
200 {
201 return m_image && m_image->Ok();
202 }
203
204 wxIcon wxStaticBitmap::GetIcon() const
205 {
206 wxCHECK_MSG( m_image, wxIcon(), _T("no image in wxStaticBitmap") );
207
208 // we can't ask for an icon if all we have is a bitmap
209 wxCHECK_MSG( m_isIcon, wxIcon(), _T("no icon in this wxStaticBitmap") );
210
211 return *(wxIcon *)m_image;
212 }
213
214 wxBitmap wxStaticBitmap::GetBitmap() const
215 {
216 if ( m_isIcon )
217 {
218 // don't fail because we might have replaced the bitmap with icon
219 // ourselves internally in ConvertImage() to keep the transparency but
220 // the user code doesn't know about it so it still can use GetBitmap()
221 // to retrieve the bitmap
222 return wxBitmap(GetIcon());
223 }
224 else // we have a bitmap
225 {
226 wxCHECK_MSG( m_image, wxBitmap(), _T("no image in wxStaticBitmap") );
227
228 return *(wxBitmap *)m_image;
229 }
230 }
231
232 void wxStaticBitmap::Free()
233 {
234 delete m_image;
235
236 m_image = NULL;
237 }
238
239 wxSize wxStaticBitmap::DoGetBestSize() const
240 {
241 if ( ImageIsOk() )
242 {
243 wxSize best(m_image->GetWidth(), m_image->GetHeight());
244 CacheBestSize(best);
245 return best;
246 }
247
248 // this is completely arbitrary
249 return wxSize(16, 16);
250 }
251
252 void wxStaticBitmap::DoPaintManually(wxPaintEvent& WXUNUSED(event))
253 {
254 wxPaintDC dc(this);
255
256 const wxSize size(GetSize());
257 const wxBitmap bmp(GetBitmap());
258
259 // Clear the background
260 dc.SetBrush(GetBackgroundColour());
261 dc.SetPen(*wxTRANSPARENT_PEN);
262 dc.DrawRectangle(0, 0, size.GetWidth(), size.GetHeight());
263
264 // Draw the image in the middle
265 dc.DrawBitmap(bmp,
266 (size.GetWidth() - bmp.GetWidth()) / 2,
267 (size.GetHeight() - bmp.GetHeight()) / 2,
268 true /* use mask */);
269 }
270
271 void wxStaticBitmap::SetImage( const wxGDIImage* image )
272 {
273 wxGDIImage* convertedImage = ConvertImage( *image );
274 SetImageNoCopy( convertedImage );
275 InvalidateBestSize();
276 }
277
278 void wxStaticBitmap::SetImageNoCopy( wxGDIImage* image)
279 {
280 Free();
281
282 m_isIcon = image->IsKindOf( CLASSINFO(wxIcon) );
283 // the image has already been copied
284 m_image = image;
285
286 int x, y;
287 int w, h;
288 GetPosition(&x, &y);
289 GetSize(&w, &h);
290
291 #ifdef __WIN32__
292 HANDLE handle = (HANDLE)m_image->GetHandle();
293 LONG style = ::GetWindowLong( (HWND)GetHWND(), GWL_STYLE ) ;
294 ::SetWindowLong( (HWND)GetHWND(), GWL_STYLE, ( style & ~( SS_BITMAP|SS_ICON ) ) |
295 ( m_isIcon ? SS_ICON : SS_BITMAP ) );
296 HGDIOBJ oldHandle = (HGDIOBJ)::SendMessage(GetHwnd(), STM_SETIMAGE,
297 m_isIcon ? IMAGE_ICON : IMAGE_BITMAP, (LPARAM)handle);
298 // detect if this is still the handle we passed before or
299 // if the static-control made a copy of the bitmap!
300 if (m_currentHandle != 0 && oldHandle != (HGDIOBJ) m_currentHandle)
301 {
302 // the static control made a copy and we are responsible for deleting it
303 DeleteObject((HGDIOBJ) oldHandle);
304 }
305 m_currentHandle = (WXHANDLE)handle;
306 #endif // Win32
307
308 if ( ImageIsOk() )
309 {
310 int width = image->GetWidth(),
311 height = image->GetHeight();
312 if ( width && height )
313 {
314 w = width;
315 h = height;
316
317 ::MoveWindow(GetHwnd(), x, y, width, height, FALSE);
318 }
319 }
320
321 RECT rect;
322 rect.left = x;
323 rect.top = y;
324 rect.right = x + w;
325 rect.bottom = y + h;
326 ::InvalidateRect(GetHwndOf(GetParent()), &rect, TRUE);
327 }
328
329 #endif // wxUSE_STATBMP