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