| 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 | #ifdef __GNUG__ |
| 12 | #pragma implementation "spinbutt.h" |
| 13 | #pragma implementation "spinbutbase.h" |
| 14 | #endif |
| 15 | |
| 16 | #include "wx/spinbutt.h" |
| 17 | |
| 18 | #if wxUSE_SPINBTN |
| 19 | |
| 20 | #include "wx/utils.h" |
| 21 | |
| 22 | #include <math.h> |
| 23 | |
| 24 | #include <gdk/gdk.h> |
| 25 | #include <gtk/gtk.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 | static void gtk_spinbutt_callback( GtkWidget *WXUNUSED(widget), wxSpinButton *win ) |
| 47 | { |
| 48 | if (g_isIdle) wxapp_install_idle_handler(); |
| 49 | |
| 50 | if (!win->m_hasVMT) return; |
| 51 | if (g_blockEventsOnDrag) return; |
| 52 | |
| 53 | float diff = win->m_adjust->value - win->m_oldPos; |
| 54 | if (fabs(diff) < sensitivity) return; |
| 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_LINEUP; |
| 61 | else if (fabs(diff+line_step) < sensitivity) command = wxEVT_SCROLL_LINEDOWN; |
| 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 | |
| 70 | if ((win->GetEventHandler()->ProcessEvent( event )) && |
| 71 | !event.IsAllowed() ) |
| 72 | { |
| 73 | /* program has vetoed */ |
| 74 | win->m_adjust->value = win->m_oldPos; |
| 75 | |
| 76 | gtk_signal_disconnect_by_func( GTK_OBJECT (win->m_adjust), |
| 77 | (GtkSignalFunc) gtk_spinbutt_callback, |
| 78 | (gpointer) win ); |
| 79 | |
| 80 | gtk_signal_emit_by_name( GTK_OBJECT(win->m_adjust), "value_changed" ); |
| 81 | |
| 82 | gtk_signal_connect( GTK_OBJECT (win->m_adjust), |
| 83 | "value_changed", |
| 84 | (GtkSignalFunc) gtk_spinbutt_callback, |
| 85 | (gpointer) win ); |
| 86 | return; |
| 87 | } |
| 88 | |
| 89 | win->m_oldPos = win->m_adjust->value; |
| 90 | |
| 91 | /* always send a thumbtrack event */ |
| 92 | if (command != wxEVT_SCROLL_THUMBTRACK) |
| 93 | { |
| 94 | command = wxEVT_SCROLL_THUMBTRACK; |
| 95 | wxSpinEvent event2( command, win->GetId()); |
| 96 | event2.SetPosition( value ); |
| 97 | event2.SetEventObject( win ); |
| 98 | win->GetEventHandler()->ProcessEvent( event2 ); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | //----------------------------------------------------------------------------- |
| 103 | // wxSpinButton |
| 104 | //----------------------------------------------------------------------------- |
| 105 | |
| 106 | IMPLEMENT_DYNAMIC_CLASS(wxSpinButton,wxControl) |
| 107 | IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxNotifyEvent) |
| 108 | |
| 109 | BEGIN_EVENT_TABLE(wxSpinButton, wxControl) |
| 110 | EVT_SIZE(wxSpinButton::OnSize) |
| 111 | END_EVENT_TABLE() |
| 112 | |
| 113 | bool wxSpinButton::Create(wxWindow *parent, |
| 114 | wxWindowID id, |
| 115 | const wxPoint& pos, |
| 116 | const wxSize& size, |
| 117 | long style, |
| 118 | const wxString& name) |
| 119 | { |
| 120 | m_needParent = TRUE; |
| 121 | |
| 122 | wxSize new_size = size, |
| 123 | sizeBest = DoGetBestSize(); |
| 124 | new_size.x = sizeBest.x; // override width always |
| 125 | if (new_size.y == -1) |
| 126 | new_size.y = sizeBest.y; |
| 127 | |
| 128 | if (!PreCreation( parent, pos, new_size ) || |
| 129 | !CreateBase( parent, id, pos, new_size, style, wxDefaultValidator, name )) |
| 130 | { |
| 131 | wxFAIL_MSG( wxT("wxXX creation failed") ); |
| 132 | return FALSE; |
| 133 | } |
| 134 | |
| 135 | m_oldPos = 0.0; |
| 136 | |
| 137 | m_adjust = (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 100.0, 1.0, 5.0, 0.0); |
| 138 | |
| 139 | m_widget = gtk_spin_button_new( m_adjust, 0, 0 ); |
| 140 | |
| 141 | gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget), |
| 142 | (int)(m_windowStyle & wxSP_WRAP) ); |
| 143 | |
| 144 | gtk_signal_connect( GTK_OBJECT (m_adjust), |
| 145 | "value_changed", |
| 146 | (GtkSignalFunc) gtk_spinbutt_callback, |
| 147 | (gpointer) this ); |
| 148 | |
| 149 | m_parent->DoAddChild( this ); |
| 150 | |
| 151 | PostCreation(); |
| 152 | |
| 153 | SetBackgroundColour( parent->GetBackgroundColour() ); |
| 154 | |
| 155 | Show( TRUE ); |
| 156 | |
| 157 | return TRUE; |
| 158 | } |
| 159 | |
| 160 | int wxSpinButton::GetMin() const |
| 161 | { |
| 162 | wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") ); |
| 163 | |
| 164 | return (int)ceil(m_adjust->lower); |
| 165 | } |
| 166 | |
| 167 | int wxSpinButton::GetMax() const |
| 168 | { |
| 169 | wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") ); |
| 170 | |
| 171 | return (int)ceil(m_adjust->upper); |
| 172 | } |
| 173 | |
| 174 | int wxSpinButton::GetValue() const |
| 175 | { |
| 176 | wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") ); |
| 177 | |
| 178 | return (int)ceil(m_adjust->value); |
| 179 | } |
| 180 | |
| 181 | void wxSpinButton::SetValue( int value ) |
| 182 | { |
| 183 | wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") ); |
| 184 | |
| 185 | float fpos = (float)value; |
| 186 | m_oldPos = fpos; |
| 187 | if (fabs(fpos-m_adjust->value) < sensitivity) return; |
| 188 | |
| 189 | m_adjust->value = fpos; |
| 190 | |
| 191 | gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" ); |
| 192 | } |
| 193 | |
| 194 | void wxSpinButton::SetRange(int minVal, int maxVal) |
| 195 | { |
| 196 | wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") ); |
| 197 | |
| 198 | float fmin = (float)minVal; |
| 199 | float fmax = (float)maxVal; |
| 200 | |
| 201 | if ((fabs(fmin-m_adjust->lower) < sensitivity) && |
| 202 | (fabs(fmax-m_adjust->upper) < sensitivity)) |
| 203 | { |
| 204 | return; |
| 205 | } |
| 206 | |
| 207 | m_adjust->lower = fmin; |
| 208 | m_adjust->upper = fmax; |
| 209 | |
| 210 | gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" ); |
| 211 | |
| 212 | // these two calls are required due to some bug in GTK |
| 213 | Refresh(); |
| 214 | SetFocus(); |
| 215 | } |
| 216 | |
| 217 | void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) ) |
| 218 | { |
| 219 | wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") ); |
| 220 | |
| 221 | m_width = DoGetBestSize().x; |
| 222 | gtk_widget_set_usize( m_widget, m_width, m_height ); |
| 223 | } |
| 224 | |
| 225 | bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window ) |
| 226 | { |
| 227 | return GTK_SPIN_BUTTON(m_widget)->panel == window; |
| 228 | } |
| 229 | |
| 230 | void wxSpinButton::ApplyWidgetStyle() |
| 231 | { |
| 232 | SetWidgetStyle(); |
| 233 | gtk_widget_set_style( m_widget, m_widgetStyle ); |
| 234 | } |
| 235 | |
| 236 | wxSize wxSpinButton::DoGetBestSize() const |
| 237 | { |
| 238 | return wxSize(15, 26); |
| 239 | } |
| 240 | |
| 241 | #endif |