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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 #ifdef __GNUG__
12 #pragma implementation "spinctrl.h"
13 #endif
14
15 #include "wx/spinctrl.h"
16
17 #ifdef wxUSE_SPINBTN
18
19 #include "wx/utils.h"
20 #include "wx/spinbutt.h"
21 #include <math.h>
22
23 #include "gdk/gdk.h"
24 #include "gtk/gtk.h"
25
26 //-----------------------------------------------------------------------------
27 // idle system
28 //-----------------------------------------------------------------------------
29
30 extern void wxapp_install_idle_handler();
31 extern bool g_isIdle;
32
33 //-----------------------------------------------------------------------------
34 // data
35 //-----------------------------------------------------------------------------
36
37 extern bool g_blockEventsOnDrag;
38
39 static const float sensitivity = 0.02;
40
41 //-----------------------------------------------------------------------------
42 // "value_changed"
43 //-----------------------------------------------------------------------------
44
45 static void gtk_spinctrl_callback( GtkWidget *WXUNUSED(widget), wxSpinCtrl *win )
46 {
47 if (g_isIdle) wxapp_install_idle_handler();
48
49 if (!win->m_hasVMT) return;
50 if (g_blockEventsOnDrag) return;
51
52 float diff = win->m_adjust->value - win->m_oldPos;
53 if (fabs(diff) < sensitivity) return;
54 win->m_oldPos = win->m_adjust->value;
55
56 wxEventType command = wxEVT_NULL;
57
58 float line_step = win->m_adjust->step_increment;
59
60 if (fabs(diff-line_step) < sensitivity) command = wxEVT_SCROLL_LINEDOWN;
61 else if (fabs(diff+line_step) < sensitivity) command = wxEVT_SCROLL_LINEUP;
62 else command = wxEVT_SCROLL_THUMBTRACK;
63
64 int value = (int)ceil(win->m_adjust->value);
65
66 wxSpinEvent event( command, win->GetId());
67 event.SetPosition( value );
68 event.SetEventObject( win );
69 win->GetEventHandler()->ProcessEvent( event );
70
71 /* always send a thumbtrack event */
72 if (command != wxEVT_SCROLL_THUMBTRACK)
73 {
74 command = wxEVT_SCROLL_THUMBTRACK;
75 wxSpinEvent event2( command, win->GetId());
76 event2.SetPosition( value );
77 event2.SetEventObject( win );
78 win->GetEventHandler()->ProcessEvent( event2 );
79 }
80 }
81
82 //-----------------------------------------------------------------------------
83 // wxSpinCtrl
84 //-----------------------------------------------------------------------------
85
86 IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl,wxControl)
87
88 BEGIN_EVENT_TABLE(wxSpinCtrl, wxControl)
89 EVT_CHAR(wxSpinCtrl::OnChar)
90 END_EVENT_TABLE()
91
92 bool wxSpinCtrl::Create(wxWindow *parent, wxWindowID id,
93 const wxString& value,
94 const wxPoint& pos, const wxSize& size,
95 long style,
96 int min, int max, int initial,
97 const wxString& name)
98 {
99 m_needParent = TRUE;
100 m_acceptsFocus = TRUE;
101
102 wxSize new_size = size;
103 if (new_size.y == -1)
104 new_size.y = 26;
105
106 if (!PreCreation( parent, pos, new_size ) ||
107 !CreateBase( parent, id, pos, new_size, style, wxDefaultValidator, name ))
108 {
109 wxFAIL_MSG( wxT("wxSpinCtrl creation failed") );
110 return FALSE;
111 }
112
113 m_oldPos = initial;
114
115 m_adjust = (GtkAdjustment*) gtk_adjustment_new( initial, min, max, 1.0, 5.0, 0.0);
116
117 m_widget = gtk_spin_button_new( m_adjust, 1, 0 );
118
119 gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
120 (int)(m_windowStyle & wxSP_WRAP) );
121
122 gtk_signal_connect( GTK_OBJECT (m_adjust),
123 "value_changed",
124 (GtkSignalFunc) gtk_spinctrl_callback,
125 (gpointer) this );
126
127 m_parent->DoAddChild( this );
128
129 PostCreation();
130
131 SetBackgroundColour( parent->GetBackgroundColour() );
132
133 SetValue( value );
134
135 Show( TRUE );
136
137 return TRUE;
138 }
139
140 int wxSpinCtrl::GetMin() const
141 {
142 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
143
144 return (int)ceil(m_adjust->lower);
145 }
146
147 int wxSpinCtrl::GetMax() const
148 {
149 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
150
151 return (int)ceil(m_adjust->upper);
152 }
153
154 int wxSpinCtrl::GetValue() const
155 {
156 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
157
158 return (int)ceil(m_adjust->value);
159 }
160
161 void wxSpinCtrl::SetValue( const wxString& value )
162 {
163 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
164
165 int n;
166 if ( (wxSscanf(value, wxT("%d"), &n) == 1) )
167 {
168 // a number - set it
169 SetValue(n);
170 }
171 else
172 {
173 // invalid number - set text as is (wxMSW compatible)
174 gtk_entry_set_text( GTK_ENTRY(m_widget), value.mbc_str() );
175 }
176 }
177
178 void wxSpinCtrl::SetValue( int value )
179 {
180 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
181
182 float fpos = (float)value;
183 m_oldPos = fpos;
184 if (fabs(fpos-m_adjust->value) < sensitivity) return;
185
186 m_adjust->value = fpos;
187
188 gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
189 }
190
191 void wxSpinCtrl::SetRange(int minVal, int maxVal)
192 {
193 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
194
195 float fmin = (float)minVal;
196 float fmax = (float)maxVal;
197
198 if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
199 (fabs(fmax-m_adjust->upper) < sensitivity))
200 {
201 return;
202 }
203
204 m_adjust->lower = fmin;
205 m_adjust->upper = fmax;
206
207 gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
208
209 // these two calls are required due to some bug in GTK
210 Refresh();
211 SetFocus();
212 }
213
214 void wxSpinCtrl::OnChar( wxKeyEvent &event )
215 {
216 wxCHECK_RET( m_widget != NULL, wxT("invalid spin ctrl") );
217
218 if (event.KeyCode() == WXK_RETURN)
219 {
220 wxWindow *top_frame = m_parent;
221 while (top_frame->GetParent() && !(top_frame->GetParent()->m_isFrame))
222 top_frame = top_frame->GetParent();
223 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
224
225 if (window->default_widget)
226 {
227 gtk_widget_activate (window->default_widget);
228 return;
229 }
230 }
231
232 event.Skip();
233 }
234
235 bool wxSpinCtrl::IsOwnGtkWindow( GdkWindow *window )
236 {
237 return GTK_SPIN_BUTTON(m_widget)->panel == window;
238 }
239
240 void wxSpinCtrl::ApplyWidgetStyle()
241 {
242 SetWidgetStyle();
243 gtk_widget_set_style( m_widget, m_widgetStyle );
244 }
245
246 #endif