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
  17 #ifdef wxUSE_SPINBTN
  18
  19 #include "wx/utils.h"
  20 #include <math.h>
  21
  22 #include "gdk/gdk.h"
  23 #include "gtk/gtk.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // idle system
  27 //-----------------------------------------------------------------------------
  28
  29 extern void wxapp_install_idle_handler();
  30 extern bool g_isIdle;
  31
  32 //-----------------------------------------------------------------------------
  33 // data
  34 //-----------------------------------------------------------------------------
  35
  36 extern bool   g_blockEventsOnDrag;
  37
  38 static const float sensitivity = 0.2;
  39
  40 //-----------------------------------------------------------------------------
  41 // "value_changed"
  42 //-----------------------------------------------------------------------------
  43
  44 static void gtk_spinbutt_callback( GtkWidget *WXUNUSED(widget), wxSpinButton *win )
  45 {
  46     if (g_isIdle) wxapp_install_idle_handler();
  47
  48     if (!win->m_hasVMT) return;
  49     if (g_blockEventsOnDrag) return;
  50
  51     float diff = win->m_adjust->value - win->m_oldPos;
  52     if (fabs(diff) < sensitivity) return;
  53     win->m_oldPos = win->m_adjust->value;
  54
  55     wxEventType command = wxEVT_NULL;
  56
  57     float line_step = win->m_adjust->step_increment;
  58     float page_step = win->m_adjust->page_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 if (fabs(diff-page_step) < sensitivity) command = wxEVT_SCROLL_PAGEDOWN;
  63     else if (fabs(diff+page_step) < sensitivity) command = wxEVT_SCROLL_PAGEUP;
  64     else command = wxEVT_SCROLL_THUMBTRACK;
  65
  66     int value = (int)ceil(win->m_adjust->value);
  67
  68     wxSpinEvent event( command, win->GetId());
  69     event.SetPosition( value );
  70     event.SetOrientation( wxVERTICAL );
  71     event.SetEventObject( win );
  72
  73     win->GetEventHandler()->ProcessEvent( event );
  74 }
  75
  76 //-----------------------------------------------------------------------------
  77 // wxSpinButton
  78 //-----------------------------------------------------------------------------
  79
  80 IMPLEMENT_DYNAMIC_CLASS(wxSpinButton,wxControl)
  81 IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxScrollEvent);
  82
  83 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
  84     EVT_SIZE(wxSpinButton::OnSize)
  85 END_EVENT_TABLE()
  86
  87 bool wxSpinButton::Create(wxWindow *parent,
  88                           wxWindowID id,
  89                           const wxPoint& pos,
  90                           const wxSize& size,
  91                           long style,
  92                           const wxString& name)
  93 {
  94     m_needParent = TRUE;
  95
  96     wxSize new_size = size;
  97     new_size.x = 15;
  98     if (new_size.y == -1)
  99         new_size.y = 30;
 100
 101     if (!PreCreation( parent, pos, size ) ||
 102         !CreateBase( parent, id, pos, new_size, style, wxDefaultValidator, name ))
 103     {
 104         wxFAIL_MSG( _T("wxXX creation failed") );
 105         return FALSE;
 106     }
 107
 108     m_oldPos = 0.0;
 109
 110     m_adjust = (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 100.0, 1.0, 5.0, 0.0);
 111
 112     m_widget = gtk_spin_button_new( m_adjust, 0, 0 );
 113
 114     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget), (m_windowStyle & wxSP_WRAP) );
 115
 116     gtk_signal_connect( GTK_OBJECT (m_adjust),
 117                         "value_changed",
 118                         (GtkSignalFunc) gtk_spinbutt_callback,
 119                         (gpointer) this );
 120
 121     m_parent->DoAddChild( this );
 122
 123     PostCreation();
 124
 125     SetBackgroundColour( parent->GetBackgroundColour() );
 126
 127     Show( TRUE );
 128
 129     return TRUE;
 130 }
 131
 132 wxSpinButton::~wxSpinButton()
 133 {
 134 }
 135
 136 int wxSpinButton::GetMin() const
 137 {
 138     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 139
 140     return (int)ceil(m_adjust->lower);
 141 }
 142
 143 int wxSpinButton::GetMax() const
 144 {
 145     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 146
 147     return (int)ceil(m_adjust->upper);
 148 }
 149
 150 int wxSpinButton::GetValue() const
 151 {
 152     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 153
 154     return (int)ceil(m_adjust->value);
 155 }
 156
 157 void wxSpinButton::SetValue( int value )
 158 {
 159     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 160
 161     float fpos = (float)value;
 162     m_oldPos = fpos;
 163     if (fabs(fpos-m_adjust->value) < sensitivity) return;
 164
 165     m_adjust->value = fpos;
 166
 167     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
 168 }
 169
 170 void wxSpinButton::SetRange(int minVal, int maxVal)
 171 {
 172     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 173
 174     float fmin = (float)minVal;
 175     float fmax = (float)maxVal;
 176
 177     if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
 178         (fabs(fmax-m_adjust->upper) < sensitivity))
 179     {
 180         return;
 181     }
 182
 183     m_adjust->lower = fmin;
 184     m_adjust->upper = fmax;
 185
 186     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
 187 }
 188
 189 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
 190 {
 191     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 192
 193     m_width = 15;
 194     gtk_widget_set_usize( m_widget, m_width, m_height );
 195 }
 196
 197 bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window )
 198 {
 199     return GTK_SPIN_BUTTON(m_widget)->panel == window;
 200 }
 201
 202 void wxSpinButton::ApplyWidgetStyle()
 203 {
 204     SetWidgetStyle();
 205     gtk_widget_set_style( m_widget, m_widgetStyle );
 206 }
 207
 208 #endif