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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: statusbr.cpp
3 // Purpose: wxStatusBar class implementation
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 01/02/97
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart and Markus Holzem
9 // Licence: wxWindows license
10 /////////////////////////////////////////////////////////////////////////////
11
12 #ifdef __GNUG__
13 #pragma implementation "statusbr.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 #include "wx/generic/statusbr.h"
31
32 #ifdef __WXMSW__
33 #include <windows.h>
34
35 #ifdef DrawText
36 #undef DrawText
37 #endif
38
39 #endif
40
41 #if !USE_SHARED_LIBRARY
42 IMPLEMENT_DYNAMIC_CLASS(wxStatusBar, wxWindow)
43
44 BEGIN_EVENT_TABLE(wxStatusBar, wxWindow)
45 EVT_PAINT(wxStatusBar::OnPaint)
46 EVT_SYS_COLOUR_CHANGED(wxStatusBar::OnSysColourChanged)
47 END_EVENT_TABLE()
48 #endif
49
50 // Default status border dimensions
51 #define wxTHICK_LINE_BORDER 2
52 #define wxTHICK_LINE_WIDTH 1
53
54 wxStatusBar::wxStatusBar(void)
55 {
56 m_statusWidths = (int *) NULL;
57 m_statusStrings = (wxString *) NULL;
58 m_nFields = 0;
59 m_borderX = wxTHICK_LINE_BORDER;
60 m_borderY = wxTHICK_LINE_BORDER;
61 }
62
63 wxStatusBar::~wxStatusBar(void)
64 {
65 # ifdef __WXMSW__
66 SetFont(wxNullFont);
67 # endif // MSW
68
69 if ( m_statusWidths )
70 delete[] m_statusWidths;
71 if ( m_statusStrings )
72 delete[] m_statusStrings;
73 }
74
75 bool wxStatusBar::Create(wxWindow *parent, wxWindowID id,
76 const wxPoint& pos,
77 const wxSize& size,
78 long style,
79 const wxString& name)
80 {
81 m_statusWidths = (int *) NULL;
82 m_statusStrings = (wxString *) NULL;
83 m_nFields = 0;
84 m_borderX = wxTHICK_LINE_BORDER;
85 m_borderY = wxTHICK_LINE_BORDER;
86
87 bool success = wxWindow::Create(parent, id, pos, size, style | wxTAB_TRAVERSAL, name);
88
89 // Don't wish this to be found as a child
90 parent->GetChildren().DeleteObject(this);
91
92 InitColours();
93
94 SetFont(m_defaultStatusBarFont);
95
96 return success;
97 }
98
99 void wxStatusBar::SetFieldsCount(int number, const int widths[])
100 {
101 m_nFields = number;
102
103 if ( m_statusWidths )
104 delete[] m_statusWidths;
105
106 if ( m_statusStrings )
107 delete[] m_statusStrings;
108
109 m_statusStrings = new wxString[number];
110
111 int i;
112 for (i = 0; i < number; i++)
113 m_statusStrings[i] = "";
114
115 if ( widths )
116 SetStatusWidths(number, widths);
117 }
118
119 void wxStatusBar::SetStatusText(const wxString& text, int number)
120 {
121 if ((number < 0) || (number >= m_nFields))
122 return;
123
124 m_statusStrings[number] = text;
125
126 Refresh();
127
128 #ifdef __WXMSW__
129 // For some reason, this can cause major GDI problems - graphics
130 // all over the place. E.g. in print previewing.
131 // ::UpdateWindow((HWND) GetHWND());
132 #endif
133 }
134
135 wxString wxStatusBar::GetStatusText(int n) const
136 {
137 if ((n < 0) || (n >= m_nFields))
138 return wxString("");
139 else
140 return m_statusStrings[n];
141 }
142
143 void wxStatusBar::SetStatusWidths(int n, const int widths_field[])
144 {
145 // only set status widths, when n == number of statuswindows
146 if (n == m_nFields)
147 {
148 // only set status widths,
149 // when one window (minimum) is variable (width <= 0)
150 bool is_variable = FALSE;
151 int i;
152 for (i = 0; i < m_nFields; i++)
153 {
154 if (widths_field[i] <= 0) is_variable = TRUE;
155 }
156
157 // if there are old widths, delete them
158 if (m_statusWidths)
159 delete [] m_statusWidths;
160
161 // set widths
162 m_statusWidths = new int[n];
163 for (i = 0; i < m_nFields; i++)
164 {
165 m_statusWidths[i] = widths_field[i];
166 }
167 }
168 }
169
170 void wxStatusBar::OnPaint(wxPaintEvent& WXUNUSED(event) )
171 {
172 wxPaintDC dc(this);
173
174 int i;
175 if ( GetFont().Ok() )
176 dc.SetFont(GetFont());
177 dc.SetBackgroundMode(wxTRANSPARENT);
178
179 for ( i = 0; i < m_nFields; i ++ )
180 DrawField(dc, i);
181
182 # ifdef __WXMSW__
183 dc.SetFont(wxNullFont);
184 # endif // MSW
185 }
186
187 void wxStatusBar::DrawFieldText(wxDC& dc, int i)
188 {
189 int leftMargin = 2;
190
191 wxRect rect;
192 GetFieldRect(i, rect);
193
194 wxString text(GetStatusText(i));
195
196 long x, y;
197
198 dc.GetTextExtent(text, &x, &y);
199
200 int xpos = rect.x + leftMargin;
201 int ypos = (int) (((rect.height - y) / 2 ) + rect.y + 0.5) ;
202
203 #ifdef __WXGTK__
204 xpos++;
205 ypos++;
206 #endif
207
208 dc.SetClippingRegion(rect.x, rect.y, rect.width, rect.height);
209
210 dc.DrawText(text, xpos, ypos);
211
212 dc.DestroyClippingRegion();
213 }
214
215 void wxStatusBar::DrawField(wxDC& dc, int i)
216 {
217 wxRect rect;
218 GetFieldRect(i, rect);
219
220 // Draw border
221 // Have grey background, plus 3-d border -
222 // One black rectangle.
223 // Inside this, left and top sides - dark grey. Bottom and right -
224 // white.
225
226 dc.SetPen(m_hilightPen);
227
228 // Right and bottom white lines
229 dc.DrawLine(rect.x + rect.width, rect.y,
230 rect.x + rect.width, rect.y + rect.height);
231 dc.DrawLine(rect.x + rect.width, rect.y + rect.height,
232 rect.x, rect.y + rect.height);
233
234 dc.SetPen(m_mediumShadowPen);
235
236 // Left and top grey lines
237 dc.DrawLine(rect.x, rect.y + rect.height,
238 rect.x, rect.y);
239 dc.DrawLine(rect.x, rect.y,
240 rect.x + rect.width, rect.y);
241
242 DrawFieldText(dc, i);
243 }
244
245 // Get the position and size of the field's internal bounding rectangle
246 bool wxStatusBar::GetFieldRect(int n, wxRect& rect) const
247 {
248 if ((n < 0) || (n >= m_nFields))
249 return FALSE;
250
251 int width, height;
252 GetClientSize(&width, &height);
253
254 int i;
255 int sum_of_nonvar = 0;
256 int num_of_var = 0;
257 bool do_same_width = FALSE;
258
259 int fieldWidth = 0;
260 int fieldPosition = 0;
261
262 if (m_statusWidths)
263 {
264 // if sum(not variable Windows) > c_width - (20 points per variable_window)
265 // then do_same_width = TRUE;
266 for (i = 0; i < m_nFields; i++)
267 {
268 if (m_statusWidths[i] > 0) sum_of_nonvar += m_statusWidths[i];
269 else num_of_var++;
270 }
271 if (sum_of_nonvar > (width - 20*num_of_var)) do_same_width = TRUE;
272 }
273 else do_same_width = TRUE;
274 if (do_same_width)
275 {
276 for (i = 0; i < m_nFields; i++)
277 {
278 fieldWidth = (int)(width/m_nFields);
279 fieldPosition = i*fieldWidth;
280 if ( i == n )
281 break;
282 }
283 }
284 else // no_same_width
285 {
286 int *tempwidth = new int[m_nFields];
287 int temppos = 0;
288 for (i = 0; i < m_nFields; i++)
289 {
290 if (m_statusWidths[i] > 0) tempwidth[i] = m_statusWidths[i];
291 else tempwidth[i] = (width - sum_of_nonvar) / num_of_var;
292 }
293 for (i = 0; i < m_nFields; i++)
294 {
295 fieldWidth = tempwidth[i];
296 fieldPosition = temppos;
297
298 temppos += tempwidth[i];
299
300 if ( i == n )
301 break;
302 }
303 delete [] tempwidth;
304 }
305
306 rect.x = fieldPosition + wxTHICK_LINE_BORDER;
307 rect.y = wxTHICK_LINE_BORDER;
308
309 rect.width = fieldWidth - 2 * wxTHICK_LINE_BORDER ;
310 rect.height = height - 2 * wxTHICK_LINE_BORDER ;
311
312 return TRUE;
313 }
314
315 // Initialize colours
316 void wxStatusBar::InitColours(void)
317 {
318 // Shadow colours
319 #if defined(__WIN95__)
320 wxColour mediumShadowColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DSHADOW));
321 m_mediumShadowPen = wxPen(mediumShadowColour, 1, wxSOLID);
322
323 wxColour hilightColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DHILIGHT));
324 m_hilightPen = wxPen(hilightColour, 1, wxSOLID);
325 #else
326 m_mediumShadowPen = wxPen("GREY", 1, wxSOLID);
327 m_hilightPen = wxPen("WHITE", 1, wxSOLID);
328 #endif
329
330 m_defaultStatusBarFont = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
331 SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
332 }
333
334 // Responds to colour changes, and passes event on to children.
335 void wxStatusBar::OnSysColourChanged(wxSysColourChangedEvent& event)
336 {
337 InitColours();
338 Refresh();
339
340 // Propagate the event to the non-top-level children
341 wxWindow::OnSysColourChanged(event);
342 }
343