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[wxWidgets.git] / src / gtk1 / spinctrl.cpp
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), (m_windowStyle & wxSP_WRAP) );
120
121 gtk_signal_connect( GTK_OBJECT (m_adjust),
122 "value_changed",
123 (GtkSignalFunc) gtk_spinctrl_callback,
124 (gpointer) this );
125
126 m_parent->DoAddChild( this );
127
128 PostCreation();
129
130 SetBackgroundColour( parent->GetBackgroundColour() );
131
132 SetValue( value );
133
134 Show( TRUE );
135
136 return TRUE;
137 }
138
139 int wxSpinCtrl::GetMin() const
140 {
141 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
142
143 return (int)ceil(m_adjust->lower);
144 }
145
146 int wxSpinCtrl::GetMax() const
147 {
148 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
149
150 return (int)ceil(m_adjust->upper);
151 }
152
153 int wxSpinCtrl::GetValue() const
154 {
155 wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
156
157 return (int)ceil(m_adjust->value);
158 }
159
160 void wxSpinCtrl::SetValue( const wxString& value )
161 {
162 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
163
164 int n;
165 if ( (wxSscanf(value, wxT("%d"), &n) == 1) )
166 {
167 // a number - set it
168 SetValue(n);
169 }
170 else
171 {
172 // invalid number - set text as is (wxMSW compatible)
173 gtk_entry_set_text( GTK_ENTRY(m_widget), value.mbc_str() );
174 }
175 }
176
177 void wxSpinCtrl::SetValue( int value )
178 {
179 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
180
181 float fpos = (float)value;
182 m_oldPos = fpos;
183 if (fabs(fpos-m_adjust->value) < sensitivity) return;
184
185 m_adjust->value = fpos;
186
187 gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
188 }
189
190 void wxSpinCtrl::SetRange(int minVal, int maxVal)
191 {
192 wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
193
194 float fmin = (float)minVal;
195 float fmax = (float)maxVal;
196
197 if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
198 (fabs(fmax-m_adjust->upper) < sensitivity))
199 {
200 return;
201 }
202
203 m_adjust->lower = fmin;
204 m_adjust->upper = fmax;
205
206 gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
207
208 // these two calls are required due to some bug in GTK
209 Refresh();
210 SetFocus();
211 }
212
213 void wxSpinCtrl::OnChar( wxKeyEvent &event )
214 {
215 wxCHECK_RET( m_widget != NULL, wxT("invalid spin ctrl") );
216
217 if (event.KeyCode() == WXK_RETURN)
218 {
219 wxWindow *top_frame = m_parent;
220 while (top_frame->GetParent() && !(top_frame->GetParent()->m_isFrame))
221 top_frame = top_frame->GetParent();
222 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
223
224 if (window->default_widget)
225 {
226 gtk_widget_activate (window->default_widget);
227 return;
228 }
229 }
230
231 event.Skip();
232 }
233
234 bool wxSpinCtrl::IsOwnGtkWindow( GdkWindow *window )
235 {
236 return GTK_SPIN_BUTTON(m_widget)->panel == window;
237 }
238
239 void wxSpinCtrl::ApplyWidgetStyle()
240 {
241 SetWidgetStyle();
242 gtk_widget_set_style( m_widget, m_widgetStyle );
243 }
244
245 #endif