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