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 <gtk/gtk.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     const double value = gtk_spin_button_get_value(spinbutton);
  39     const int pos = int(value);
  40     const int oldPos = win->m_pos;
  41     if (g_blockEventsOnDrag || pos == oldPos)
  42     {
  43         win->m_pos = pos;
  44         return;
  45     }
  46
  47     wxSpinEvent event(pos > oldPos ? wxEVT_SCROLL_LINEUP : wxEVT_SCROLL_LINEDOWN, win->GetId());
  48     event.SetPosition(pos);
  49     event.SetEventObject(win);
  50
  51     if ((win->HandleWindowEvent( event )) &&
  52         !event.IsAllowed() )
  53     {
  54         /* program has vetoed */
  55         // this will cause another "value_changed" signal,
  56         // but because pos == oldPos nothing will happen
  57         gtk_spin_button_set_value(spinbutton, oldPos);
  58         return;
  59     }
  60
  61     win->m_pos = pos;
  62
  63     /* always send a thumbtrack event */
  64     wxSpinEvent event2(wxEVT_SCROLL_THUMBTRACK, win->GetId());
  65     event2.SetPosition(pos);
  66     event2.SetEventObject(win);
  67     win->HandleWindowEvent(event2);
  68 }
  69 }
  70
  71 //-----------------------------------------------------------------------------
  72 // wxSpinButton
  73 //-----------------------------------------------------------------------------
  74
  75 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
  76     EVT_SIZE(wxSpinButton::OnSize)
  77 END_EVENT_TABLE()
  78
  79 wxSpinButton::wxSpinButton()
  80 {
  81     m_pos = 0;
  82 }
  83
  84 bool wxSpinButton::Create(wxWindow *parent,
  85                           wxWindowID id,
  86                           const wxPoint& pos,
  87                           const wxSize& size,
  88                           long style,
  89                           const wxString& name)
  90 {
  91     wxSize new_size = size,
  92            sizeBest = DoGetBestSize();
  93     new_size.x = sizeBest.x;            // override width always
  94     if (new_size.y == -1)
  95         new_size.y = sizeBest.y;
  96
  97     if (!PreCreation( parent, pos, new_size ) ||
  98         !CreateBase( parent, id, pos, new_size, style, wxDefaultValidator, name ))
  99     {
 100         wxFAIL_MSG( wxT("wxSpinButton creation failed") );
 101         return false;
 102     }
 103
 104     m_pos = 0;
 105
 106     m_widget = gtk_spin_button_new_with_range(0, 100, 1);
 107     g_object_ref(m_widget);
 108
 109     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
 110                               (int)(m_windowStyle & wxSP_WRAP) );
 111
 112     g_signal_connect_after(
 113         m_widget, "value_changed", G_CALLBACK(gtk_value_changed), this);
 114
 115     m_parent->DoAddChild( this );
 116
 117     PostCreation(new_size);
 118
 119     return true;
 120 }
 121
 122 int wxSpinButton::GetMin() const
 123 {
 124     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 125
 126     double min;
 127     gtk_spin_button_get_range((GtkSpinButton*)m_widget, &min, NULL);
 128     return int(min);
 129 }
 130
 131 int wxSpinButton::GetMax() const
 132 {
 133     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 134
 135     double max;
 136     gtk_spin_button_get_range((GtkSpinButton*)m_widget, NULL, &max);
 137     return int(max);
 138 }
 139
 140 int wxSpinButton::GetValue() const
 141 {
 142     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 143
 144     return m_pos;
 145 }
 146
 147 void wxSpinButton::SetValue( int value )
 148 {
 149     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 150
 151     GtkDisableEvents();
 152     gtk_spin_button_set_value((GtkSpinButton*)m_widget, value);
 153     m_pos = int(gtk_spin_button_get_value((GtkSpinButton*)m_widget));
 154     GtkEnableEvents();
 155 }
 156
 157 void wxSpinButton::SetRange(int minVal, int maxVal)
 158 {
 159     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 160
 161     GtkDisableEvents();
 162     gtk_spin_button_set_range((GtkSpinButton*)m_widget, minVal, maxVal);
 163     m_pos = int(gtk_spin_button_get_value((GtkSpinButton*)m_widget));
 164     GtkEnableEvents();
 165 }
 166
 167 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
 168 {
 169     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 170
 171     m_width = DoGetBestSize().x;
 172     gtk_widget_set_size_request( m_widget, m_width, m_height );
 173 }
 174
 175 bool wxSpinButton::Enable( bool enable )
 176 {
 177     if (!base_type::Enable(enable))
 178         return false;
 179
 180     // Work around lack of visual update when enabling
 181     if (enable)
 182         GTKFixSensitivity(false /* fix even if not under mouse */);
 183
 184     return true;
 185 }
 186
 187 void wxSpinButton::GtkDisableEvents() const
 188 {
 189     g_signal_handlers_block_by_func(m_widget,
 190         (gpointer)gtk_value_changed, (void*) this);
 191 }
 192
 193 void wxSpinButton::GtkEnableEvents() const
 194 {
 195     g_signal_handlers_unblock_by_func(m_widget,
 196         (gpointer)gtk_value_changed, (void*) this);
 197 }
 198
 199 GdkWindow *wxSpinButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 200 {
 201 #ifdef __WXGTK3__
 202     // no access to internal GdkWindows
 203     return NULL;
 204 #else
 205     return GTK_SPIN_BUTTON(m_widget)->panel;
 206 #endif
 207 }
 208
 209 wxSize wxSpinButton::DoGetBestSize() const
 210 {
 211     wxSize best(15, 26); // FIXME
 212     CacheBestSize(best);
 213     return best;
 214 }
 215
 216 // static
 217 wxVisualAttributes
 218 wxSpinButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 219 {
 220     // TODO: overload to accept functions like gtk_spin_button_new?
 221     // Until then use a similar type
 222     return GetDefaultAttributesFromGTKWidget(gtk_button_new);
 223 }
 224
 225 #endif