src/gtk/spinbutt.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/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 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_SPINBTN
  15
  16 #include "wx/spinbutt.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/utils.h"
  20 #endif
  21
  22 #include "wx/gtk/private.h"
  23
  24 //-----------------------------------------------------------------------------
  25 // data
  26 //-----------------------------------------------------------------------------
  27
  28 extern bool   g_blockEventsOnDrag;
  29
  30 //-----------------------------------------------------------------------------
  31 // "value_changed"
  32 //-----------------------------------------------------------------------------
  33
  34 extern "C" {
  35 static void
  36 gtk_value_changed(GtkSpinButton* spinbutton, wxSpinButton* win)
  37 {
  38     if (g_isIdle) wxapp_install_idle_handler();
  39
  40     const double value = gtk_spin_button_get_value(spinbutton);
  41     const int pos = int(value);
  42     const int oldPos = win->m_pos;
  43     if (!win->m_hasVMT || g_blockEventsOnDrag || win->m_blockScrollEvent || pos == oldPos)
  44     {
  45         win->m_pos = pos;
  46         return;
  47     }
  48
  49     wxSpinEvent event(pos > oldPos ? wxEVT_SCROLL_LINEUP : wxEVT_SCROLL_LINEDOWN, win->GetId());
  50     event.SetPosition(pos);
  51     event.SetEventObject(win);
  52
  53     if ((win->GetEventHandler()->ProcessEvent( event )) &&
  54         !event.IsAllowed() )
  55     {
  56         /* program has vetoed */
  57         win->BlockScrollEvent();
  58         gtk_spin_button_set_value(spinbutton, oldPos);
  59         win->UnblockScrollEvent();
  60         return;
  61     }
  62
  63     win->m_pos = pos;
  64
  65     /* always send a thumbtrack event */
  66     wxSpinEvent event2(wxEVT_SCROLL_THUMBTRACK, win->GetId());
  67     event2.SetPosition(pos);
  68     event2.SetEventObject(win);
  69     win->GetEventHandler()->ProcessEvent(event2);
  70 }
  71 }
  72
  73 //-----------------------------------------------------------------------------
  74 // wxSpinButton
  75 //-----------------------------------------------------------------------------
  76
  77 IMPLEMENT_DYNAMIC_CLASS(wxSpinButton,wxControl)
  78 IMPLEMENT_DYNAMIC_CLASS(wxSpinEvent, wxNotifyEvent)
  79
  80 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
  81     EVT_SIZE(wxSpinButton::OnSize)
  82 END_EVENT_TABLE()
  83
  84 wxSpinButton::wxSpinButton()
  85 {
  86     m_pos = 0;
  87 }
  88
  89 bool wxSpinButton::Create(wxWindow *parent,
  90                           wxWindowID id,
  91                           const wxPoint& pos,
  92                           const wxSize& size,
  93                           long style,
  94                           const wxString& name)
  95 {
  96     m_needParent = true;
  97
  98     wxSize new_size = size,
  99            sizeBest = DoGetBestSize();
 100     new_size.x = sizeBest.x;            // override width always
 101     if (new_size.y == -1)
 102         new_size.y = sizeBest.y;
 103
 104     if (!PreCreation( parent, pos, new_size ) ||
 105         !CreateBase( parent, id, pos, new_size, style, wxDefaultValidator, name ))
 106     {
 107         wxFAIL_MSG( wxT("wxSpinButton creation failed") );
 108         return false;
 109     }
 110
 111     m_pos = 0;
 112
 113     m_widget = gtk_spin_button_new_with_range(0, 100, 1);
 114
 115     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
 116                               (int)(m_windowStyle & wxSP_WRAP) );
 117
 118     g_signal_connect_after(
 119         m_widget, "value_changed", G_CALLBACK(gtk_value_changed), this);
 120
 121     m_parent->DoAddChild( this );
 122
 123     PostCreation(new_size);
 124
 125     return true;
 126 }
 127
 128 int wxSpinButton::GetMin() const
 129 {
 130     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 131
 132     double min;
 133     gtk_spin_button_get_range((GtkSpinButton*)m_widget, &min, NULL);
 134     return int(min);
 135 }
 136
 137 int wxSpinButton::GetMax() const
 138 {
 139     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 140
 141     double max;
 142     gtk_spin_button_get_range((GtkSpinButton*)m_widget, NULL, &max);
 143     return int(max);
 144 }
 145
 146 int wxSpinButton::GetValue() const
 147 {
 148     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 149
 150     return m_pos;
 151 }
 152
 153 void wxSpinButton::SetValue( int value )
 154 {
 155     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 156
 157     BlockScrollEvent();
 158     gtk_spin_button_set_value((GtkSpinButton*)m_widget, value);
 159     UnblockScrollEvent();
 160 }
 161
 162 void wxSpinButton::SetRange(int minVal, int maxVal)
 163 {
 164     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 165
 166     BlockScrollEvent();
 167     gtk_spin_button_set_range((GtkSpinButton*)m_widget, minVal, maxVal);
 168     UnblockScrollEvent();
 169 }
 170
 171 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
 172 {
 173     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 174
 175     m_width = DoGetBestSize().x;
 176     gtk_widget_set_size_request( m_widget, m_width, m_height );
 177 }
 178
 179 GdkWindow *wxSpinButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 180 {
 181     return GTK_SPIN_BUTTON(m_widget)->panel;
 182 }
 183
 184 wxSize wxSpinButton::DoGetBestSize() const
 185 {
 186     wxSize best(15, 26); // FIXME
 187     CacheBestSize(best);
 188     return best;
 189 }
 190
 191 // static
 192 wxVisualAttributes
 193 wxSpinButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 194 {
 195     // TODO: overload to accept functions like gtk_spin_button_new?
 196     // Until then use a similar type
 197     return GetDefaultAttributesFromGTKWidget(gtk_button_new);
 198 }
 199
 200 #endif