src/gtk/spinbutt.cpp

   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 #endif
  14
  15 #include "wx/spinbutt.h"
  16 #include "wx/utils.h"
  17 #include <math.h>
  18
  19 #include "gdk/gdk.h"
  20 #include "gtk/gtk.h"
  21
  22 //-----------------------------------------------------------------------------
  23 // data
  24 //-----------------------------------------------------------------------------
  25
  26 extern bool   g_blockEventsOnDrag;
  27
  28 static const float sensitivity = 0.2;
  29
  30 //-----------------------------------------------------------------------------
  31 // "value_changed"
  32 //-----------------------------------------------------------------------------
  33
  34 static void gtk_spinbutt_callback( GtkWidget *WXUNUSED(widget), wxSpinButton *win )
  35 {
  36     if (!win->HasVMT()) return;
  37     if (g_blockEventsOnDrag) return;
  38
  39     float diff = win->m_adjust->value - win->m_oldPos;
  40     if (fabs(diff) < sensitivity) return;
  41     win->m_oldPos = win->m_adjust->value;
  42
  43     wxEventType command = wxEVT_NULL;
  44
  45     float line_step = win->m_adjust->step_increment;
  46     float page_step = win->m_adjust->page_increment;
  47
  48     if (fabs(diff-line_step) < sensitivity) command = wxEVT_SCROLL_LINEDOWN;
  49     else if (fabs(diff+line_step) < sensitivity) command = wxEVT_SCROLL_LINEUP;
  50     else if (fabs(diff-page_step) < sensitivity) command = wxEVT_SCROLL_PAGEDOWN;
  51     else if (fabs(diff+page_step) < sensitivity) command = wxEVT_SCROLL_PAGEUP;
  52     else command = wxEVT_SCROLL_THUMBTRACK;
  53
  54     int value = (int)ceil(win->m_adjust->value);
  55
  56     wxSpinEvent event( command, win->GetId());
  57     event.SetPosition( value );
  58     event.SetOrientation( wxVERTICAL );
  59     event.SetEventObject( win );
  60
  61     win->GetEventHandler()->ProcessEvent( event );
  62 }
  63
  64 //-----------------------------------------------------------------------------
  65 // wxSpinButton
  66 //-----------------------------------------------------------------------------
  67
  68 IMPLEMENT_DYNAMIC_CLASS(wxSpinButton,wxControl)
  69
  70 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
  71     EVT_SIZE(wxSpinButton::OnSize)
  72 END_EVENT_TABLE()
  73
  74 wxSpinButton::wxSpinButton()
  75 {
  76 }
  77
  78 bool wxSpinButton::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size,
  79             long style, const wxString& name)
  80 {
  81     m_needParent = TRUE;
  82
  83     wxSize new_size = size;
  84     new_size.x = 16;
  85     if (new_size.y == -1)
  86         new_size.y = 30;
  87
  88     PreCreation( parent, id, pos, new_size, style, name );
  89
  90 //  SetValidator( validator );
  91
  92     m_oldPos = 0.0;
  93
  94     m_adjust = (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 100.0, 1.0, 5.0, 0.0);
  95
  96     m_widget = gtk_spin_button_new( m_adjust, 0, 0 );
  97
  98     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget), (m_windowStyle & wxSP_WRAP) );
  99
 100     gtk_signal_connect( GTK_OBJECT (m_adjust),
 101                         "value_changed",
 102                         (GtkSignalFunc) gtk_spinbutt_callback,
 103                         (gpointer) this );
 104
 105     m_parent->AddChild( this );
 106
 107     (m_parent->m_insertCallback)( m_parent, this );
 108
 109     PostCreation();
 110
 111     SetBackgroundColour( parent->GetBackgroundColour() );
 112
 113     Show( TRUE );
 114
 115     return TRUE;
 116 }
 117
 118 wxSpinButton::~wxSpinButton()
 119 {
 120 }
 121
 122 int wxSpinButton::GetMin() const
 123 {
 124     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 125
 126     return (int)ceil(m_adjust->lower);
 127 }
 128
 129 int wxSpinButton::GetMax() const
 130 {
 131     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 132
 133     return (int)ceil(m_adjust->upper);
 134 }
 135
 136 int wxSpinButton::GetValue() const
 137 {
 138     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 139
 140     return (int)ceil(m_adjust->value);
 141 }
 142
 143 void wxSpinButton::SetValue( int value )
 144 {
 145     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 146
 147     float fpos = (float)value;
 148     m_oldPos = fpos;
 149     if (fabs(fpos-m_adjust->value) < sensitivity) return;
 150
 151     m_adjust->value = fpos;
 152
 153     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
 154 }
 155
 156 void wxSpinButton::SetRange(int minVal, int maxVal)
 157 {
 158     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 159
 160     float fmin = (float)minVal;
 161     float fmax = (float)maxVal;
 162
 163     if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
 164         (fabs(fmax-m_adjust->upper) < sensitivity))
 165     {
 166         return;
 167     }
 168
 169     m_adjust->lower = fmin;
 170     m_adjust->upper = fmax;
 171
 172     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
 173 }
 174
 175 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
 176 {
 177     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 178
 179     m_width = 16;
 180     gtk_widget_set_usize( m_widget, m_width, m_height );
 181 }
 182
 183 bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window )
 184 {
 185     return GTK_SPIN_BUTTON(m_widget)->panel == window;
 186 }
 187
 188 void wxSpinButton::ApplyWidgetStyle()
 189 {
 190     SetWidgetStyle();
 191     gtk_widget_set_style( m_widget, m_widgetStyle );
 192 }
 193
 194 //-----------------------------------------------------------------------------
 195 // wxSpinEvent
 196 //-----------------------------------------------------------------------------
 197
 198 IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxScrollEvent)
 199
 200 wxSpinEvent::wxSpinEvent(wxEventType commandType, int id):
 201   wxScrollEvent(commandType, id)
 202 {
 203 }