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
  82 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
  83     EVT_SIZE(wxSpinButton::OnSize)
  84 END_EVENT_TABLE()
  85
  86 wxSpinButton::wxSpinButton()
  87 {
  88 }
  89
  90 bool wxSpinButton::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size,
  91             long style, const wxString& name)
  92 {
  93     m_needParent = TRUE;
  94
  95     wxSize new_size = size;
  96     new_size.x = 15;
  97     if (new_size.y == -1)
  98         new_size.y = 30;
  99
 100     PreCreation( parent, id, pos, new_size, style, name );
 101
 102 //  SetValidator( validator );
 103
 104     m_oldPos = 0.0;
 105
 106     m_adjust = (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 100.0, 1.0, 5.0, 0.0);
 107
 108     m_widget = gtk_spin_button_new( m_adjust, 0, 0 );
 109
 110     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget), (m_windowStyle & wxSP_WRAP) );
 111
 112     gtk_signal_connect( GTK_OBJECT (m_adjust),
 113                         "value_changed",
 114                         (GtkSignalFunc) gtk_spinbutt_callback,
 115                         (gpointer) this );
 116
 117     m_parent->DoAddChild( this );
 118
 119     PostCreation();
 120
 121     SetBackgroundColour( parent->GetBackgroundColour() );
 122
 123     Show( TRUE );
 124
 125     return TRUE;
 126 }
 127
 128 wxSpinButton::~wxSpinButton()
 129 {
 130 }
 131
 132 int wxSpinButton::GetMin() const
 133 {
 134     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 135
 136     return (int)ceil(m_adjust->lower);
 137 }
 138
 139 int wxSpinButton::GetMax() const
 140 {
 141     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 142
 143     return (int)ceil(m_adjust->upper);
 144 }
 145
 146 int wxSpinButton::GetValue() const
 147 {
 148     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 149
 150     return (int)ceil(m_adjust->value);
 151 }
 152
 153 void wxSpinButton::SetValue( int value )
 154 {
 155     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 156
 157     float fpos = (float)value;
 158     m_oldPos = fpos;
 159     if (fabs(fpos-m_adjust->value) < sensitivity) return;
 160
 161     m_adjust->value = fpos;
 162
 163     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
 164 }
 165
 166 void wxSpinButton::SetRange(int minVal, int maxVal)
 167 {
 168     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 169
 170     float fmin = (float)minVal;
 171     float fmax = (float)maxVal;
 172
 173     if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
 174         (fabs(fmax-m_adjust->upper) < sensitivity))
 175     {
 176         return;
 177     }
 178
 179     m_adjust->lower = fmin;
 180     m_adjust->upper = fmax;
 181
 182     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
 183 }
 184
 185 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
 186 {
 187     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 188
 189     m_width = 15;
 190     gtk_widget_set_usize( m_widget, m_width, m_height );
 191 }
 192
 193 bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window )
 194 {
 195     return GTK_SPIN_BUTTON(m_widget)->panel == window;
 196 }
 197
 198 void wxSpinButton::ApplyWidgetStyle()
 199 {
 200     SetWidgetStyle();
 201     gtk_widget_set_style( m_widget, m_widgetStyle );
 202 }
 203
 204 //-----------------------------------------------------------------------------
 205 // wxSpinEvent
 206 //-----------------------------------------------------------------------------
 207
 208 IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxScrollEvent)
 209
 210 wxSpinEvent::wxSpinEvent(wxEventType commandType, int id):
 211   wxScrollEvent(commandType, id)
 212 {
 213 }
 214
 215 #endif