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