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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: spinbutt.cpp
3 // Purpose: wxSpinCtrl
4 // Author: Robert
5 // Modified by:
6 // RCS-ID: $Id$
7 // Copyright: (c) Robert Roebling
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
10
11 // For compilers that support precompilation, includes "wx.h".
12 #include "wx/wxprec.h"
13
14 #include "wx/spinctrl.h"
15
16 #if wxUSE_SPINCTRL
17
18 #include "wx/utils.h"
19
20 #include "wx/textctrl.h" // for wxEVT_COMMAND_TEXT_UPDATED
21 #include "wx/math.h"
22 #include "wx/gtk/private.h"
23
24 //-----------------------------------------------------------------------------
25 // idle system
26 //-----------------------------------------------------------------------------
27
28 extern void wxapp_install_idle_handler();
29 extern bool g_isIdle;
30
31 static const float sensitivity = 0.02;
32
33 //-----------------------------------------------------------------------------
34 // data
35 //-----------------------------------------------------------------------------
36
37 extern bool g_blockEventsOnDrag;
38
39 //-----------------------------------------------------------------------------
40 // "value_changed"
41 //-----------------------------------------------------------------------------
42
43 extern "C" {
44 static void gtk_spinctrl_callback( GtkWidget *WXUNUSED(widget), wxSpinCtrl *win )
45 {
46 if (g_isIdle) wxapp_install_idle_handler();
47
48 if (!win->m_hasVMT) return;
49 if (g_blockEventsOnDrag) return;
50
51 wxCommandEvent event( wxEVT_COMMAND_SPINCTRL_UPDATED, win->GetId());
52 event.SetEventObject( win );
53
54 // note that we don't use wxSpinCtrl::GetValue() here because it would
55 // adjust the value to fit into the control range and this means that we
56 // would never be able to enter an "invalid" value in the control, even
57 // temporarily - and trying to enter 10 into the control which accepts the
58 // values in range 5..50 is then, ummm, quite challenging (hint: you can't
59 // enter 1!) (VZ)
60 event.SetInt( (int)ceil(win->m_adjust->value) );
61 win->GetEventHandler()->ProcessEvent( event );
62 }
63 }
64
65 //-----------------------------------------------------------------------------
66 // "changed"
67 //-----------------------------------------------------------------------------
68
69 extern "C" {
70 static void
71 gtk_spinctrl_text_changed_callback( GtkWidget *WXUNUSED(widget), wxSpinCtrl *win )
72 {
73 if (!win->m_hasVMT) return;
74
75 if (g_isIdle)
76 wxapp_install_idle_handler();
77
78 wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
79 event.SetEventObject( win );
80
81 // see above
82 event.SetInt( (int)ceil(win->m_adjust->value) );
83 win->GetEventHandler()->ProcessEvent( event );
84 }
85 }
86
87 //-----------------------------------------------------------------------------
88 // wxSpinCtrl
89 //-----------------------------------------------------------------------------
90
91 IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl,wxControl)
92
93 BEGIN_EVENT_TABLE(wxSpinCtrl, wxControl)
94 EVT_CHAR(wxSpinCtrl::OnChar)
95 END_EVENT_TABLE()
96
97 bool wxSpinCtrl::Create(wxWindow *parent, wxWindowID id,
98 const wxString& value,
99 const wxPoint& pos, const wxSize& size,
100 long style,
101 int min, int max, int initial,
102 const wxString& name)
103 {
104 m_needParent = TRUE;
105 m_acceptsFocus = TRUE;
106
107 if (!PreCreation( parent, pos, size ) ||
108 !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
109 {
110 wxFAIL_MSG( wxT("wxSpinCtrl creation failed") );
111 return FALSE;
112 }
113
114 m_oldPos = initial;
115
116 m_adjust = (GtkAdjustment*) gtk_adjustment_new( initial, min, max, 1.0, 5.0, 0.0);
117
118 m_widget = gtk_spin_button_new( m_adjust, 1, 0 );
119
120 gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
121 (int)(m_windowStyle & wxSP_WRAP) );
122
123 GtkEnableEvents();
124
125 m_parent->DoAddChild( this );
126
127 PostCreation(size);
128
129 SetValue( value );
130
131 return TRUE;
132 }
133
134 void wxSpinCtrl::GtkDisableEvents()
135 {
136 gtk_signal_disconnect_by_func( GTK_OBJECT(m_adjust),
137 GTK_SIGNAL_FUNC(gtk_spinctrl_callback),
138 (gpointer) this );
139
140 gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
141 GTK_SIGNAL_FUNC(gtk_spinctrl_text_changed_callback),
142 (gpointer) this );
143 }
144
145 void wxSpinCtrl::GtkEnableEvents()
146 {
147 gtk_signal_connect( GTK_OBJECT (m_adjust),
148 "value_changed",
149 GTK_SIGNAL_FUNC(gtk_spinctrl_callback),
150 (gpointer) this );
151
152 gtk_signal_connect( GTK_OBJECT(m_widget),
153 "changed",
154 GTK_SIGNAL_FUNC(gtk_spinctrl_text_changed_callback),
155 (gpointer)this);
156 }
157
158 int wxSpinCtrl::GetMin() const
159 {
160 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
161
162 return (int)ceil(m_adjust->lower);
163 }
164
165 int wxSpinCtrl::GetMax() const
166 {
167 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
168
169 return (int)ceil(m_adjust->upper);
170 }
171
172 int wxSpinCtrl::GetValue() const
173 {
174 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
175
176 gtk_spin_button_update( GTK_SPIN_BUTTON(m_widget) );
177
178 return (int)ceil(m_adjust->value);
179 }
180
181 void wxSpinCtrl::SetValue( const wxString& value )
182 {
183 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
184
185 int n;
186 if ( (wxSscanf(value, wxT("%d"), &n) == 1) )
187 {
188 // a number - set it
189 SetValue(n);
190 }
191 else
192 {
193 // invalid number - set text as is (wxMSW compatible)
194 GtkDisableEvents();
195 gtk_entry_set_text( GTK_ENTRY(m_widget), wxGTK_CONV( value ) );
196 GtkEnableEvents();
197 }
198 }
199
200 void wxSpinCtrl::SetValue( int value )
201 {
202 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
203
204 float fpos = (float)value;
205 m_oldPos = fpos;
206 if (fabs(fpos-m_adjust->value) < sensitivity) return;
207
208 m_adjust->value = fpos;
209
210 GtkDisableEvents();
211 gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
212 GtkEnableEvents();
213 }
214
215 void wxSpinCtrl::SetSelection(long from, long to)
216 {
217 // translate from wxWidgets conventions to GTK+ ones: (-1, -1) means the
218 // entire range
219 if ( from == -1 && to == -1 )
220 {
221 from = 0;
222 to = INT_MAX;
223 }
224
225 gtk_editable_select_region( GTK_EDITABLE(m_widget), (gint)from, (gint)to );
226 }
227
228 void wxSpinCtrl::SetRange(int minVal, int maxVal)
229 {
230 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
231
232 float fmin = (float)minVal;
233 float fmax = (float)maxVal;
234
235 if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
236 (fabs(fmax-m_adjust->upper) < sensitivity))
237 {
238 return;
239 }
240
241 m_adjust->lower = fmin;
242 m_adjust->upper = fmax;
243
244 gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
245
246 // these two calls are required due to some bug in GTK
247 Refresh();
248 SetFocus();
249 }
250
251 void wxSpinCtrl::OnChar( wxKeyEvent &event )
252 {
253 wxCHECK_RET( m_widget != NULL, wxT("invalid spin ctrl") );
254
255 if (event.GetKeyCode() == WXK_RETURN)
256 {
257 wxWindow *top_frame = m_parent;
258 while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
259 top_frame = top_frame->GetParent();
260
261 if ( GTK_IS_WINDOW(top_frame->m_widget) )
262 {
263 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
264 if ( window )
265 {
266 GtkWidget *widgetDef = window->default_widget;
267
268 if ( widgetDef )
269 {
270 gtk_widget_activate(widgetDef);
271 return;
272 }
273 }
274 }
275 }
276
277 if ((event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
278 {
279 wxCommandEvent evt( wxEVT_COMMAND_TEXT_ENTER, m_windowId );
280 evt.SetEventObject(this);
281 GtkSpinButton *gsb = GTK_SPIN_BUTTON(m_widget);
282 wxString val = wxGTK_CONV_BACK( gtk_entry_get_text( &gsb->entry ) );
283 evt.SetString( val );
284 if (GetEventHandler()->ProcessEvent(evt)) return;
285 }
286
287 event.Skip();
288 }
289
290 bool wxSpinCtrl::IsOwnGtkWindow( GdkWindow *window )
291 {
292 if (GTK_SPIN_BUTTON(m_widget)->entry.text_area == window) return TRUE;
293
294 if (GTK_SPIN_BUTTON(m_widget)->panel == window) return TRUE;
295
296 return FALSE;
297 }
298
299 wxSize wxSpinCtrl::DoGetBestSize() const
300 {
301 wxSize ret( wxControl::DoGetBestSize() );
302 wxSize best(95, ret.y);
303 CacheBestSize(best);
304 return best;
305 }
306
307 // static
308 wxVisualAttributes
309 wxSpinCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
310 {
311 // TODO: overload to accept functions like gtk_spin_button_new?
312 // Until then use a similar type
313 return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
314 }
315
316 #endif
317 // wxUSE_SPINCTRL