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 // idle system
  24 //-----------------------------------------------------------------------------
  25
  26 extern void wxapp_install_idle_handler();
  27 extern bool g_isIdle;
  28
  29 //-----------------------------------------------------------------------------
  30 // data
  31 //-----------------------------------------------------------------------------
  32
  33 extern bool   g_blockEventsOnDrag;
  34
  35 static const float sensitivity = 0.2;
  36
  37 //-----------------------------------------------------------------------------
  38 // "value_changed"
  39 //-----------------------------------------------------------------------------
  40
  41 static void gtk_spinbutt_callback( GtkWidget *WXUNUSED(widget), wxSpinButton *win )
  42 {
  43     if (g_isIdle) wxapp_install_idle_handler();
  44
  45     if (!win->m_hasVMT) return;
  46     if (g_blockEventsOnDrag) return;
  47
  48     float diff = win->m_adjust->value - win->m_oldPos;
  49     if (fabs(diff) < sensitivity) return;
  50     win->m_oldPos = win->m_adjust->value;
  51
  52     wxEventType command = wxEVT_NULL;
  53
  54     float line_step = win->m_adjust->step_increment;
  55     float page_step = win->m_adjust->page_increment;
  56
  57     if (fabs(diff-line_step) < sensitivity) command = wxEVT_SCROLL_LINEDOWN;
  58     else if (fabs(diff+line_step) < sensitivity) command = wxEVT_SCROLL_LINEUP;
  59     else if (fabs(diff-page_step) < sensitivity) command = wxEVT_SCROLL_PAGEDOWN;
  60     else if (fabs(diff+page_step) < sensitivity) command = wxEVT_SCROLL_PAGEUP;
  61     else command = wxEVT_SCROLL_THUMBTRACK;
  62
  63     int value = (int)ceil(win->m_adjust->value);
  64
  65     wxSpinEvent event( command, win->GetId());
  66     event.SetPosition( value );
  67     event.SetOrientation( wxVERTICAL );
  68     event.SetEventObject( win );
  69
  70     win->GetEventHandler()->ProcessEvent( event );
  71 }
  72
  73 //-----------------------------------------------------------------------------
  74 // wxSpinButton
  75 //-----------------------------------------------------------------------------
  76
  77 IMPLEMENT_DYNAMIC_CLASS(wxSpinButton,wxControl)
  78
  79 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
  80     EVT_SIZE(wxSpinButton::OnSize)
  81 END_EVENT_TABLE()
  82
  83 wxSpinButton::wxSpinButton()
  84 {
  85 }
  86
  87 bool wxSpinButton::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size,
  88             long style, const wxString& name)
  89 {
  90     m_needParent = TRUE;
  91
  92     wxSize new_size = size;
  93     new_size.x = 15;
  94     if (new_size.y == -1)
  95         new_size.y = 30;
  96
  97     PreCreation( parent, id, pos, new_size, style, name );
  98
  99 //  SetValidator( validator );
 100
 101     m_oldPos = 0.0;
 102
 103     m_adjust = (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 100.0, 1.0, 5.0, 0.0);
 104
 105     m_widget = gtk_spin_button_new( m_adjust, 0, 0 );
 106
 107     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget), (m_windowStyle & wxSP_WRAP) );
 108
 109     gtk_signal_connect( GTK_OBJECT (m_adjust),
 110                         "value_changed",
 111                         (GtkSignalFunc) gtk_spinbutt_callback,
 112                         (gpointer) this );
 113
 114     m_parent->DoAddChild( this );
 115
 116     PostCreation();
 117
 118     SetBackgroundColour( parent->GetBackgroundColour() );
 119
 120     Show( TRUE );
 121
 122     return TRUE;
 123 }
 124
 125 wxSpinButton::~wxSpinButton()
 126 {
 127 }
 128
 129 int wxSpinButton::GetMin() const
 130 {
 131     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 132
 133     return (int)ceil(m_adjust->lower);
 134 }
 135
 136 int wxSpinButton::GetMax() const
 137 {
 138     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 139
 140     return (int)ceil(m_adjust->upper);
 141 }
 142
 143 int wxSpinButton::GetValue() const
 144 {
 145     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 146
 147     return (int)ceil(m_adjust->value);
 148 }
 149
 150 void wxSpinButton::SetValue( int value )
 151 {
 152     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 153
 154     float fpos = (float)value;
 155     m_oldPos = fpos;
 156     if (fabs(fpos-m_adjust->value) < sensitivity) return;
 157
 158     m_adjust->value = fpos;
 159
 160     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
 161 }
 162
 163 void wxSpinButton::SetRange(int minVal, int maxVal)
 164 {
 165     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 166
 167     float fmin = (float)minVal;
 168     float fmax = (float)maxVal;
 169
 170     if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
 171         (fabs(fmax-m_adjust->upper) < sensitivity))
 172     {
 173         return;
 174     }
 175
 176     m_adjust->lower = fmin;
 177     m_adjust->upper = fmax;
 178
 179     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
 180 }
 181
 182 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
 183 {
 184     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 185
 186     m_width = 15;
 187     gtk_widget_set_usize( m_widget, m_width, m_height );
 188 }
 189
 190 bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window )
 191 {
 192     return GTK_SPIN_BUTTON(m_widget)->panel == window;
 193 }
 194
 195 void wxSpinButton::ApplyWidgetStyle()
 196 {
 197     SetWidgetStyle();
 198     gtk_widget_set_style( m_widget, m_widgetStyle );
 199 }
 200
 201 //-----------------------------------------------------------------------------
 202 // wxSpinEvent
 203 //-----------------------------------------------------------------------------
 204
 205 IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxScrollEvent)
 206
 207 wxSpinEvent::wxSpinEvent(wxEventType commandType, int id):
 208   wxScrollEvent(commandType, id)
 209 {
 210 }