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1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: msw/statbr95.cpp
3 // Purpose: native implementation of wxStatusBar
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 04.04.98
7 // RCS-ID: $Id$
8 // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
9 // Licence: wxWindows license
10 ///////////////////////////////////////////////////////////////////////////////
11
12 #ifdef __GNUG__
13 #pragma implementation "statbr95.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/setup.h"
25 #include "wx/frame.h"
26 #include "wx/settings.h"
27 #include "wx/dcclient.h"
28 #endif
29
30 #if defined(__WIN95__) && wxUSE_NATIVE_STATUSBAR
31
32 #include "wx/intl.h"
33 #include "wx/log.h"
34 #include "wx/statusbr.h"
35
36 #include "wx/msw/private.h"
37 #include <windowsx.h>
38
39 #if !(defined(__GNUWIN32_OLD__) || defined(__TWIN32__))
40 #include <commctrl.h>
41 #endif
42
43 // ----------------------------------------------------------------------------
44 // wxWindows macros
45 // ----------------------------------------------------------------------------
46
47 IMPLEMENT_DYNAMIC_CLASS(wxStatusBar95, wxWindow);
48 IMPLEMENT_DYNAMIC_CLASS(wxStatusBar, wxStatusBar95)
49
50 // ----------------------------------------------------------------------------
51 // macros
52 // ----------------------------------------------------------------------------
53
54 // windowsx.h and commctrl.h don't define those, so we do it here
55 #define StatusBar_SetParts(h, n, w) SendMessage(h, SB_SETPARTS, (WPARAM)n, (LPARAM)w)
56 #define StatusBar_SetText(h, n, t) SendMessage(h, SB_SETTEXT, (WPARAM)n, (LPARAM)(LPCTSTR)t)
57 #define StatusBar_GetTextLen(h, n) LOWORD(SendMessage(h, SB_GETTEXTLENGTH, (WPARAM)n, 0))
58 #define StatusBar_GetText(h, n, s) LOWORD(SendMessage(h, SB_GETTEXT, (WPARAM)n, (LPARAM)(LPTSTR)s))
59
60 // ----------------------------------------------------------------------------
61 //
62 // ----------------------------------------------------------------------------
63
64 // static WNDPROC gs_wndprocStatBar = NULL;
65 static WXFARPROC gs_wndprocStatBar = (WXFARPROC) NULL;
66
67 LRESULT APIENTRY wxStatusBarProc(HWND hwnd,
68 UINT message,
69 WPARAM wParam,
70 LPARAM lParam)
71 {
72 switch (message) {
73 case WM_COMMAND:
74 case WM_DRAWITEM:
75 case WM_MEASUREITEM:
76 case WM_SIZE:
77 case WM_MOVE:
78 case WM_MOUSEMOVE:
79 case WM_LBUTTONUP:
80 case WM_LBUTTONDBLCLK:
81 case WM_RBUTTONDOWN:
82 case WM_RBUTTONUP:
83 case WM_RBUTTONDBLCLK:
84 case WM_MBUTTONDOWN:
85 case WM_MBUTTONUP:
86 case WM_MBUTTONDBLCLK:
87 wxStatusBar95 *sb = (wxStatusBar95 *)GetWindowLong(hwnd, GWL_USERDATA);
88 sb->MSWWindowProc(message, wParam, lParam);
89 break;
90 }
91
92 return ::CallWindowProc(CASTWNDPROC gs_wndprocStatBar, hwnd, message, wParam, lParam);
93 }
94
95 // ============================================================================
96 // implementation
97 // ============================================================================
98
99 // ----------------------------------------------------------------------------
100 // wxStatusBar95 class
101 // ----------------------------------------------------------------------------
102
103 wxStatusBar95::wxStatusBar95()
104 {
105 SetParent(NULL);
106 m_hWnd = 0;
107 m_windowId = 0;
108 }
109
110 bool wxStatusBar95::Create(wxWindow *parent,
111 wxWindowID id,
112 long style,
113 const wxString& name)
114 {
115 wxCHECK_MSG( parent, FALSE, wxT("status bar must have a parent") );
116
117 SetName(name);
118 SetWindowStyleFlag(style);
119 SetParent(parent);
120
121 parent->AddChild(this);
122
123 m_windowId = id == -1 ? NewControlId() : id;
124
125 DWORD wstyle = WS_CHILD | WS_VISIBLE;
126
127 if ( style & wxCLIP_SIBLINGS )
128 wstyle |= WS_CLIPSIBLINGS;
129
130
131 // setting SBARS_SIZEGRIP is perfectly useless: it's always on by default
132 // (at least in the version of comctl32.dll I'm using), and the only way to
133 // turn it off is to use CCS_TOP style - as we position the status bar
134 // manually anyhow (see DoMoveWindow), use CCS_TOP style if wxST_SIZEGRIP
135 // is not given
136 if ( !(style & wxST_SIZEGRIP) )
137 {
138 wstyle |= CCS_TOP;
139 }
140 else
141 {
142 // may be some versions of comctl32.dll do need it - anyhow, it won't
143 // do any harm
144 wstyle |= SBARS_SIZEGRIP;
145 }
146
147 m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
148 wxEmptyString,
149 GetHwndOf(parent),
150 m_windowId);
151 if ( m_hWnd == 0 )
152 {
153 wxLogSysError(_("Failed to create a status bar."));
154
155 return FALSE;
156 }
157
158 SetFieldsCount(1);
159
160 // we can't subclass this window as usual because the status bar window
161 // proc processes WM_SIZE and WM_PAINT specially
162 // SubclassWin(m_hWnd);
163
164 // but we want to process the messages from it still, so do custom
165 // subclassing here
166 gs_wndprocStatBar = (WXFARPROC)GetWindowLong(GetHwnd(), GWL_WNDPROC);
167 SetWindowLong(GetHwnd(), GWL_WNDPROC, (LONG)wxStatusBarProc);
168 SetWindowLong(GetHwnd(), GWL_USERDATA, (LONG)this);
169
170 return TRUE;
171 }
172
173 wxStatusBar95::~wxStatusBar95()
174 {
175 delete [] m_statusWidths;
176 }
177
178 void wxStatusBar95::CopyFieldsWidth(const int widths[])
179 {
180 if (widths && !m_statusWidths)
181 m_statusWidths = new int[m_nFields];
182
183 if ( widths != NULL ) {
184 for ( int i = 0; i < m_nFields; i++ )
185 m_statusWidths[i] = widths[i];
186 }
187 else {
188 delete [] m_statusWidths;
189 m_statusWidths = NULL;
190 }
191 }
192
193 void wxStatusBar95::SetFieldsCount(int nFields, const int *widths)
194 {
195 // this is a Windows limitation
196 wxASSERT_MSG( (nFields > 0) && (nFields < 255), _T("too many fields") );
197
198 m_nFields = nFields;
199
200 CopyFieldsWidth(widths);
201 SetFieldsWidth();
202 }
203
204 void wxStatusBar95::SetStatusWidths(int WXUNUSED_UNLESS_DEBUG(n), const int widths[])
205 {
206 wxASSERT_MSG( n == m_nFields, _T("field number mismatch") );
207
208 CopyFieldsWidth(widths);
209 SetFieldsWidth();
210 }
211
212 void wxStatusBar95::SetFieldsWidth()
213 {
214 if ( !m_nFields )
215 return;
216
217 int aBorders[3];
218 SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
219
220 int extraWidth = aBorders[2]; // space between fields
221
222 int *pWidths = new int[m_nFields];
223
224 int nWindowWidth, y;
225 GetClientSize(&nWindowWidth, &y);
226
227 if ( m_statusWidths == NULL ) {
228 // default: all fields have the same width
229 int nWidth = nWindowWidth / m_nFields;
230 for ( int i = 0; i < m_nFields; i++ )
231 pWidths[i] = (i + 1) * nWidth;
232 }
233 else {
234 // -1 doesn't mean the same thing for wxWindows and Win32, recalc
235 int nTotalWidth = 0,
236 nVarCount = 0,
237 i;
238 for ( i = 0; i < m_nFields; i++ ) {
239 if ( m_statusWidths[i] == -1 )
240 nVarCount++;
241 else
242 nTotalWidth += m_statusWidths[i] + extraWidth;
243 }
244
245 if ( nVarCount == 0 ) {
246 wxFAIL_MSG( _T("at least one field must be of variable width") );
247
248 nVarCount++;
249 }
250
251 int nVarWidth = (nWindowWidth - nTotalWidth) / nVarCount;
252
253 // do fill the array
254 int nCurPos = 0;
255 for ( i = 0; i < m_nFields; i++ ) {
256 if ( m_statusWidths[i] == -1 )
257 nCurPos += nVarWidth;
258 else
259 nCurPos += m_statusWidths[i] + extraWidth;
260 pWidths[i] = nCurPos;
261 }
262 }
263
264 if ( !StatusBar_SetParts(GetHwnd(), m_nFields, pWidths) ) {
265 wxLogLastError(wxT("StatusBar_SetParts"));
266 }
267
268 delete [] pWidths;
269 }
270
271 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
272 {
273 wxCHECK_RET( (nField >= 0) && (nField < m_nFields),
274 _T("invalid statusbar field index") );
275
276 if ( !StatusBar_SetText(GetHwnd(), nField, strText) ) {
277 wxLogLastError(wxT("StatusBar_SetText"));
278 }
279 }
280
281 wxString wxStatusBar95::GetStatusText(int nField) const
282 {
283 wxCHECK_MSG( (nField >= 0) && (nField < m_nFields), wxEmptyString,
284 _T("invalid statusbar field index") );
285
286 wxString str;
287 int len = StatusBar_GetTextLen(GetHwnd(), nField);
288 if (len > 0)
289 {
290 StatusBar_GetText(GetHwnd(), nField, str.GetWriteBuf(len));
291 str.UngetWriteBuf();
292 }
293 return str;
294 }
295
296 int wxStatusBar95::GetBorderX() const
297 {
298 int aBorders[3];
299 SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
300
301 return aBorders[0];
302 }
303
304 int wxStatusBar95::GetBorderY() const
305 {
306 int aBorders[3];
307 SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
308
309 return aBorders[1];
310 }
311
312 void wxStatusBar95::SetMinHeight(int height)
313 {
314 SendMessage(GetHwnd(), SB_SETMINHEIGHT, height + 2*GetBorderY(), 0);
315
316 // have to send a (dummy) WM_SIZE to redraw it now
317 SendMessage(GetHwnd(), WM_SIZE, 0, 0);
318 }
319
320 bool wxStatusBar95::GetFieldRect(int i, wxRect& rect) const
321 {
322 wxCHECK_MSG( (i >= 0) && (i < m_nFields), FALSE,
323 _T("invalid statusbar field index") );
324
325 RECT r;
326 if ( !::SendMessage(GetHwnd(), SB_GETRECT, i, (LPARAM)&r) )
327 {
328 wxLogLastError(wxT("SendMessage(SB_GETRECT)"));
329 }
330
331 wxCopyRECTToRect(r, rect);
332
333 return TRUE;
334 }
335
336 void wxStatusBar95::DoMoveWindow(int x, int y, int width, int height)
337 {
338 // the status bar wnd proc must be forwarded the WM_SIZE message whenever
339 // the stat bar position/size is changed because it normally positions the
340 // control itself along bottom or top side of the parent window - failing
341 // to do so will result in nasty visual effects
342 FORWARD_WM_SIZE(GetHwnd(), SIZE_RESTORED, x, y, SendMessage);
343
344 // but now, when the standard status bar wnd proc did all it wanted to do,
345 // move the status bar to its correct location - usually this call may be
346 // omitted because for normal status bars (positioned along the bottom
347 // edge) the position is already set correctly, but if the user wants to
348 // position them in some exotic location, this is really needed
349 wxWindow::DoMoveWindow(x, y, width, height);
350
351 // adjust fields widths to the new size
352 SetFieldsWidth();
353 }
354
355 #endif // __WIN95__ && wxUSE_NATIVE_STATUSBAR
356