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 //-----------------------------------------------------------------------------
  29 // "value_changed"
  30 //-----------------------------------------------------------------------------
  31
  32 static void gtk_spinbutt_callback( GtkWidget *WXUNUSED(widget), wxSpinButton *win )
  33 {
  34     if (!win->HasVMT()) return;
  35     if (g_blockEventsOnDrag) return;
  36
  37     float diff = win->m_adjust->value - win->m_oldPos;
  38     if (fabs(diff) < 0.2) return;
  39     win->m_oldPos = win->m_adjust->value;
  40
  41     wxEventType command = wxEVT_NULL;
  42
  43     float line_step = win->m_adjust->step_increment;
  44     float page_step = win->m_adjust->page_increment;
  45
  46     if (fabs(diff-line_step) < 0.2) command = wxEVT_SCROLL_LINEDOWN;
  47     else if (fabs(diff+line_step) < 0.2) command = wxEVT_SCROLL_LINEUP;
  48     else if (fabs(diff-page_step) < 0.2) command = wxEVT_SCROLL_PAGEDOWN;
  49     else if (fabs(diff+page_step) < 0.2) command = wxEVT_SCROLL_PAGEUP;
  50     else command = wxEVT_SCROLL_THUMBTRACK;
  51
  52     int value = (int)(win->m_adjust->value+0.5);
  53
  54     wxSpinEvent event( command, win->GetId());
  55     event.SetPosition( value );
  56     event.SetOrientation( wxVERTICAL );
  57     event.SetEventObject( win );
  58
  59     win->GetEventHandler()->ProcessEvent( event );
  60 }
  61
  62 //-----------------------------------------------------------------------------
  63 // wxSpinButton
  64 //-----------------------------------------------------------------------------
  65
  66 IMPLEMENT_DYNAMIC_CLASS(wxSpinButton,wxControl)
  67
  68 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
  69     EVT_SIZE(wxSpinButton::OnSize)
  70 END_EVENT_TABLE()
  71
  72 wxSpinButton::wxSpinButton()
  73 {
  74 }
  75
  76 bool wxSpinButton::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size,
  77             long style, const wxString& name)
  78 {
  79     m_needParent = TRUE;
  80
  81     wxSize new_size = size;
  82     new_size.x = 16;
  83     if (new_size.y == -1) new_size.y = 30;
  84
  85     PreCreation( parent, id, pos, new_size, style, name );
  86
  87 //  SetValidator( validator );
  88
  89     m_oldPos = 0.0;
  90
  91     m_adjust = (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 100.0, 1.0, 5.0, 0.0);
  92
  93     m_widget = gtk_spin_button_new( m_adjust, 0, 0 );
  94
  95     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget), (m_windowStyle & wxSP_WRAP) );
  96
  97     gtk_signal_connect( GTK_OBJECT (m_adjust),
  98                         "value_changed",
  99                         (GtkSignalFunc) gtk_spinbutt_callback,
 100                         (gpointer) this );
 101
 102     m_parent->AddChild( this );
 103
 104     (m_parent->m_insertCallback)( m_parent, this );
 105
 106     PostCreation();
 107
 108     SetBackgroundColour( parent->GetBackgroundColour() );
 109
 110     Show( TRUE );
 111
 112     return TRUE;
 113 }
 114
 115 wxSpinButton::~wxSpinButton()
 116 {
 117 }
 118
 119 int wxSpinButton::GetMin() const
 120 {
 121     wxCHECK_MSG( (m_widget != NULL), 0, "invalid spin button" );
 122
 123     return (int)(m_adjust->lower+0.5);
 124 }
 125
 126 int wxSpinButton::GetMax() const
 127 {
 128     wxCHECK_MSG( (m_widget != NULL), 0, "invalid spin button" );
 129
 130     return (int)(m_adjust->upper+0.5);
 131 }
 132
 133 int wxSpinButton::GetValue() const
 134 {
 135     wxCHECK_MSG( (m_widget != NULL), 0, "invalid spin button" );
 136
 137     return (int)(m_adjust->value+0.5);
 138 }
 139
 140 void wxSpinButton::SetValue( int value )
 141 {
 142     wxCHECK_RET( (m_widget != NULL), "invalid spin button" );
 143
 144     float fpos = (float)value;
 145     m_oldPos = fpos;
 146     if (fabs(fpos-m_adjust->value) < 0.2) return;
 147
 148     m_adjust->value = fpos;
 149
 150     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
 151 }
 152
 153 void wxSpinButton::SetRange(int minVal, int maxVal)
 154 {
 155     wxCHECK_RET( (m_widget != NULL), "invalid spin button" );
 156
 157     float fmin = (float)minVal;
 158     float fmax = (float)maxVal;
 159
 160     if ((fabs(fmin-m_adjust->lower) < 0.2) &&
 161         (fabs(fmax-m_adjust->upper) < 0.2))
 162     {
 163         return;
 164     }
 165
 166     m_adjust->lower = fmin;
 167     m_adjust->upper = fmax;
 168
 169     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
 170 }
 171
 172 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
 173 {
 174     wxCHECK_RET( (m_widget != NULL), "invalid spin button" );
 175
 176     m_width = 16;
 177     gtk_widget_set_usize( m_widget, m_width, m_height );
 178 }
 179
 180 bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window )
 181 {
 182     return GTK_SPIN_BUTTON(m_widget)->panel == window;
 183 }
 184
 185 void wxSpinButton::ApplyWidgetStyle()
 186 {
 187     SetWidgetStyle();
 188     gtk_widget_set_style( m_widget, m_widgetStyle );
 189 }
 190
 191 //-----------------------------------------------------------------------------
 192 // wxSpinEvent
 193 //-----------------------------------------------------------------------------
 194
 195 IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxScrollEvent)
 196
 197 wxSpinEvent::wxSpinEvent(wxEventType commandType, int id):
 198   wxScrollEvent(commandType, id)
 199 {
 200 }
 201
 202