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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: spinbutt.cpp | |
3 | // Purpose: wxSpinButton | |
4 | // Author: Robert | |
5 | // Modified by: | |
6 | // RCS-ID: $Id$ | |
7 | // Copyright: (c) Robert Roebling | |
8 | // Licence: wxWindows licence | |
9 | ///////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
12 | #pragma implementation "spinbutt.h" | |
13 | #pragma implementation "spinbutbase.h" | |
14 | #endif | |
15 | ||
16 | // For compilers that support precompilation, includes "wx.h". | |
17 | #include "wx/wxprec.h" | |
18 | ||
19 | #include "wx/spinbutt.h" | |
20 | ||
21 | #if wxUSE_SPINBTN | |
22 | ||
23 | #include "wx/utils.h" | |
24 | #include "wx/math.h" | |
25 | #include "wx/gtk/private.h" | |
26 | ||
27 | //----------------------------------------------------------------------------- | |
28 | // idle system | |
29 | //----------------------------------------------------------------------------- | |
30 | ||
31 | extern void wxapp_install_idle_handler(); | |
32 | extern bool g_isIdle; | |
33 | ||
34 | //----------------------------------------------------------------------------- | |
35 | // data | |
36 | //----------------------------------------------------------------------------- | |
37 | ||
38 | extern bool g_blockEventsOnDrag; | |
39 | ||
40 | static const float sensitivity = 0.02; | |
41 | ||
42 | //----------------------------------------------------------------------------- | |
43 | // "value_changed" | |
44 | //----------------------------------------------------------------------------- | |
45 | ||
46 | extern "C" { | |
47 | static void gtk_spinbutt_callback( GtkWidget *WXUNUSED(widget), wxSpinButton *win ) | |
48 | { | |
49 | if (g_isIdle) wxapp_install_idle_handler(); | |
50 | ||
51 | if (!win->m_hasVMT) return; | |
52 | if (g_blockEventsOnDrag) return; | |
53 | ||
54 | float diff = win->m_adjust->value - win->m_oldPos; | |
55 | if (fabs(diff) < sensitivity) return; | |
56 | ||
57 | wxEventType command = wxEVT_NULL; | |
58 | ||
59 | float line_step = win->m_adjust->step_increment; | |
60 | ||
61 | if (fabs(diff-line_step) < sensitivity) command = wxEVT_SCROLL_LINEUP; | |
62 | else if (fabs(diff+line_step) < sensitivity) command = wxEVT_SCROLL_LINEDOWN; | |
63 | else command = wxEVT_SCROLL_THUMBTRACK; | |
64 | ||
65 | int value = (int)ceil(win->m_adjust->value); | |
66 | ||
67 | wxSpinEvent event( command, win->GetId()); | |
68 | event.SetPosition( value ); | |
69 | event.SetEventObject( win ); | |
70 | ||
71 | if ((win->GetEventHandler()->ProcessEvent( event )) && | |
72 | !event.IsAllowed() ) | |
73 | { | |
74 | /* program has vetoed */ | |
75 | win->m_adjust->value = win->m_oldPos; | |
76 | ||
77 | gtk_signal_disconnect_by_func( GTK_OBJECT (win->m_adjust), | |
78 | (GtkSignalFunc) gtk_spinbutt_callback, | |
79 | (gpointer) win ); | |
80 | ||
81 | gtk_signal_emit_by_name( GTK_OBJECT(win->m_adjust), "value_changed" ); | |
82 | ||
83 | gtk_signal_connect( GTK_OBJECT (win->m_adjust), | |
84 | "value_changed", | |
85 | (GtkSignalFunc) gtk_spinbutt_callback, | |
86 | (gpointer) win ); | |
87 | return; | |
88 | } | |
89 | ||
90 | win->m_oldPos = win->m_adjust->value; | |
91 | ||
92 | /* always send a thumbtrack event */ | |
93 | if (command != wxEVT_SCROLL_THUMBTRACK) | |
94 | { | |
95 | command = wxEVT_SCROLL_THUMBTRACK; | |
96 | wxSpinEvent event2( command, win->GetId()); | |
97 | event2.SetPosition( value ); | |
98 | event2.SetEventObject( win ); | |
99 | win->GetEventHandler()->ProcessEvent( event2 ); | |
100 | } | |
101 | } | |
102 | } | |
103 | ||
104 | //----------------------------------------------------------------------------- | |
105 | // wxSpinButton | |
106 | //----------------------------------------------------------------------------- | |
107 | ||
108 | IMPLEMENT_DYNAMIC_CLASS(wxSpinButton,wxControl) | |
109 | IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxNotifyEvent) | |
110 | ||
111 | BEGIN_EVENT_TABLE(wxSpinButton, wxControl) | |
112 | EVT_SIZE(wxSpinButton::OnSize) | |
113 | END_EVENT_TABLE() | |
114 | ||
115 | bool wxSpinButton::Create(wxWindow *parent, | |
116 | wxWindowID id, | |
117 | const wxPoint& pos, | |
118 | const wxSize& size, | |
119 | long style, | |
120 | const wxString& name) | |
121 | { | |
122 | m_needParent = TRUE; | |
123 | ||
124 | wxSize new_size = size, | |
125 | sizeBest = DoGetBestSize(); | |
126 | new_size.x = sizeBest.x; // override width always | |
127 | if (new_size.y == -1) | |
128 | new_size.y = sizeBest.y; | |
129 | ||
130 | if (!PreCreation( parent, pos, new_size ) || | |
131 | !CreateBase( parent, id, pos, new_size, style, wxDefaultValidator, name )) | |
132 | { | |
133 | wxFAIL_MSG( wxT("wxXX creation failed") ); | |
134 | return FALSE; | |
135 | } | |
136 | ||
137 | m_oldPos = 0.0; | |
138 | ||
139 | m_adjust = (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 100.0, 1.0, 5.0, 0.0); | |
140 | ||
141 | m_widget = gtk_spin_button_new( m_adjust, 0, 0 ); | |
142 | ||
143 | gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget), | |
144 | (int)(m_windowStyle & wxSP_WRAP) ); | |
145 | ||
146 | gtk_signal_connect( GTK_OBJECT (m_adjust), | |
147 | "value_changed", | |
148 | (GtkSignalFunc) gtk_spinbutt_callback, | |
149 | (gpointer) this ); | |
150 | ||
151 | m_parent->DoAddChild( this ); | |
152 | ||
153 | PostCreation(new_size); | |
154 | ||
155 | return TRUE; | |
156 | } | |
157 | ||
158 | int wxSpinButton::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 wxSpinButton::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 wxSpinButton::GetValue() const | |
173 | { | |
174 | wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") ); | |
175 | ||
176 | return (int)ceil(m_adjust->value); | |
177 | } | |
178 | ||
179 | void wxSpinButton::SetValue( int value ) | |
180 | { | |
181 | wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") ); | |
182 | ||
183 | float fpos = (float)value; | |
184 | m_oldPos = fpos; | |
185 | if (fabs(fpos-m_adjust->value) < sensitivity) return; | |
186 | ||
187 | m_adjust->value = fpos; | |
188 | ||
189 | gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" ); | |
190 | } | |
191 | ||
192 | void wxSpinButton::SetRange(int minVal, int maxVal) | |
193 | { | |
194 | wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") ); | |
195 | ||
196 | float fmin = (float)minVal; | |
197 | float fmax = (float)maxVal; | |
198 | ||
199 | if ((fabs(fmin-m_adjust->lower) < sensitivity) && | |
200 | (fabs(fmax-m_adjust->upper) < sensitivity)) | |
201 | { | |
202 | return; | |
203 | } | |
204 | ||
205 | m_adjust->lower = fmin; | |
206 | m_adjust->upper = fmax; | |
207 | ||
208 | gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" ); | |
209 | ||
210 | // these two calls are required due to some bug in GTK | |
211 | Refresh(); | |
212 | SetFocus(); | |
213 | } | |
214 | ||
215 | void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) ) | |
216 | { | |
217 | wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") ); | |
218 | ||
219 | m_width = DoGetBestSize().x; | |
220 | gtk_widget_set_usize( m_widget, m_width, m_height ); | |
221 | } | |
222 | ||
223 | bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window ) | |
224 | { | |
225 | return GTK_SPIN_BUTTON(m_widget)->panel == window; | |
226 | } | |
227 | ||
228 | wxSize wxSpinButton::DoGetBestSize() const | |
229 | { | |
230 | wxSize best(15, 26); // FIXME | |
231 | CacheBestSize(best); | |
232 | return best; | |
233 | } | |
234 | ||
235 | // static | |
236 | wxVisualAttributes | |
237 | wxSpinButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant)) | |
238 | { | |
239 | // TODO: overload to accept functions like gtk_spin_button_new? | |
240 | // Until then use a similar type | |
241 | return GetDefaultAttributesFromGTKWidget(gtk_button_new); | |
242 | } | |
243 | ||
244 | #endif |