src/gtk1/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.SetEventObject( win );
  71
  72     win->GetEventHandler()->ProcessEvent( event );
  73 }
  74
  75 //-----------------------------------------------------------------------------
  76 // wxSpinButton
  77 //-----------------------------------------------------------------------------
  78
  79 IMPLEMENT_DYNAMIC_CLASS(wxSpinButton,wxControl)
  80 IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxScrollEvent);
  81
  82 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
  83     EVT_SIZE(wxSpinButton::OnSize)
  84 END_EVENT_TABLE()
  85
  86 bool wxSpinButton::Create(wxWindow *parent,
  87                           wxWindowID id,
  88                           const wxPoint& pos,
  89                           const wxSize& size,
  90                           long style,
  91                           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     if (!PreCreation( parent, pos, new_size ) ||
 101         !CreateBase( parent, id, pos, new_size, style, wxDefaultValidator, name ))
 102     {
 103         wxFAIL_MSG( _T("wxXX creation failed") );
 104         return FALSE;
 105     }
 106
 107     m_oldPos = 0.0;
 108
 109     m_adjust = (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 100.0, 1.0, 5.0, 0.0);
 110
 111     m_widget = gtk_spin_button_new( m_adjust, 0, 0 );
 112
 113     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget), (m_windowStyle & wxSP_WRAP) );
 114
 115     gtk_signal_connect( GTK_OBJECT (m_adjust),
 116                         "value_changed",
 117                         (GtkSignalFunc) gtk_spinbutt_callback,
 118                         (gpointer) this );
 119
 120     m_parent->DoAddChild( this );
 121
 122     PostCreation();
 123
 124     SetBackgroundColour( parent->GetBackgroundColour() );
 125
 126     Show( TRUE );
 127
 128     return TRUE;
 129 }
 130
 131 wxSpinButton::~wxSpinButton()
 132 {
 133 }
 134
 135 int wxSpinButton::GetMin() const
 136 {
 137     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 138
 139     return (int)ceil(m_adjust->lower);
 140 }
 141
 142 int wxSpinButton::GetMax() const
 143 {
 144     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 145
 146     return (int)ceil(m_adjust->upper);
 147 }
 148
 149 int wxSpinButton::GetValue() const
 150 {
 151     wxCHECK_MSG( (m_widget != NULL), 0, _T("invalid spin button") );
 152
 153     return (int)ceil(m_adjust->value);
 154 }
 155
 156 void wxSpinButton::SetValue( int value )
 157 {
 158     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 159
 160     float fpos = (float)value;
 161     m_oldPos = fpos;
 162     if (fabs(fpos-m_adjust->value) < sensitivity) return;
 163
 164     m_adjust->value = fpos;
 165
 166     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
 167 }
 168
 169 void wxSpinButton::SetRange(int minVal, int maxVal)
 170 {
 171     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 172
 173     float fmin = (float)minVal;
 174     float fmax = (float)maxVal;
 175
 176     if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
 177         (fabs(fmax-m_adjust->upper) < sensitivity))
 178     {
 179         return;
 180     }
 181
 182     m_adjust->lower = fmin;
 183     m_adjust->upper = fmax;
 184
 185     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
 186 }
 187
 188 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
 189 {
 190     wxCHECK_RET( (m_widget != NULL), _T("invalid spin button") );
 191
 192     m_width = 15;
 193     gtk_widget_set_usize( m_widget, m_width, m_height );
 194 }
 195
 196 bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window )
 197 {
 198     return GTK_SPIN_BUTTON(m_widget)->panel == window;
 199 }
 200
 201 void wxSpinButton::ApplyWidgetStyle()
 202 {
 203     SetWidgetStyle();
 204     gtk_widget_set_style( m_widget, m_widgetStyle );
 205 }
 206
 207 #endif