src/gtk/spinbutt.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/spinbutt.cpp
   3 // Purpose:     wxSpinButton
   4 // Author:      Robert
   5 // Modified by:
   6 // Copyright:   (c) Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_SPINBTN
  14
  15 #include "wx/spinbutt.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/utils.h"
  19 #endif
  20
  21 #include <gtk/gtk.h>
  22
  23 //-----------------------------------------------------------------------------
  24 // data
  25 //-----------------------------------------------------------------------------
  26
  27 extern bool   g_blockEventsOnDrag;
  28
  29 //-----------------------------------------------------------------------------
  30 // "value_changed"
  31 //-----------------------------------------------------------------------------
  32
  33 extern "C" {
  34 static void
  35 gtk_value_changed(GtkSpinButton* spinbutton, wxSpinButton* win)
  36 {
  37     const double value = gtk_spin_button_get_value(spinbutton);
  38     const int pos = int(value);
  39     const int oldPos = win->m_pos;
  40     if (g_blockEventsOnDrag || pos == oldPos)
  41     {
  42         win->m_pos = pos;
  43         return;
  44     }
  45
  46     wxSpinEvent event(pos > oldPos ? wxEVT_SCROLL_LINEUP : wxEVT_SCROLL_LINEDOWN, win->GetId());
  47     event.SetPosition(pos);
  48     event.SetEventObject(win);
  49
  50     if ((win->HandleWindowEvent( event )) &&
  51         !event.IsAllowed() )
  52     {
  53         /* program has vetoed */
  54         // this will cause another "value_changed" signal,
  55         // but because pos == oldPos nothing will happen
  56         gtk_spin_button_set_value(spinbutton, oldPos);
  57         return;
  58     }
  59
  60     win->m_pos = pos;
  61
  62     /* always send a thumbtrack event */
  63     wxSpinEvent event2(wxEVT_SCROLL_THUMBTRACK, win->GetId());
  64     event2.SetPosition(pos);
  65     event2.SetEventObject(win);
  66     win->HandleWindowEvent(event2);
  67 }
  68 }
  69
  70 //-----------------------------------------------------------------------------
  71 // wxSpinButton
  72 //-----------------------------------------------------------------------------
  73
  74 BEGIN_EVENT_TABLE(wxSpinButton, wxControl)
  75     EVT_SIZE(wxSpinButton::OnSize)
  76 END_EVENT_TABLE()
  77
  78 wxSpinButton::wxSpinButton()
  79 {
  80     m_pos = 0;
  81 }
  82
  83 bool wxSpinButton::Create(wxWindow *parent,
  84                           wxWindowID id,
  85                           const wxPoint& pos,
  86                           const wxSize& size,
  87                           long style,
  88                           const wxString& name)
  89 {
  90     wxSize new_size = size,
  91            sizeBest = DoGetBestSize();
  92     new_size.x = sizeBest.x;            // override width always
  93     if (new_size.y == -1)
  94         new_size.y = sizeBest.y;
  95
  96     if (!PreCreation( parent, pos, new_size ) ||
  97         !CreateBase( parent, id, pos, new_size, style, wxDefaultValidator, name ))
  98     {
  99         wxFAIL_MSG( wxT("wxSpinButton creation failed") );
 100         return false;
 101     }
 102
 103     m_pos = 0;
 104
 105     m_widget = gtk_spin_button_new_with_range(0, 100, 1);
 106     g_object_ref(m_widget);
 107
 108     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
 109                               (int)(m_windowStyle & wxSP_WRAP) );
 110
 111     g_signal_connect_after(
 112         m_widget, "value_changed", G_CALLBACK(gtk_value_changed), this);
 113
 114     m_parent->DoAddChild( this );
 115
 116     PostCreation(new_size);
 117
 118     return true;
 119 }
 120
 121 int wxSpinButton::GetMin() const
 122 {
 123     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 124
 125     double min;
 126     gtk_spin_button_get_range((GtkSpinButton*)m_widget, &min, NULL);
 127     return int(min);
 128 }
 129
 130 int wxSpinButton::GetMax() const
 131 {
 132     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 133
 134     double max;
 135     gtk_spin_button_get_range((GtkSpinButton*)m_widget, NULL, &max);
 136     return int(max);
 137 }
 138
 139 int wxSpinButton::GetValue() const
 140 {
 141     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 142
 143     return m_pos;
 144 }
 145
 146 void wxSpinButton::SetValue( int value )
 147 {
 148     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 149
 150     GtkDisableEvents();
 151     gtk_spin_button_set_value((GtkSpinButton*)m_widget, value);
 152     m_pos = int(gtk_spin_button_get_value((GtkSpinButton*)m_widget));
 153     GtkEnableEvents();
 154 }
 155
 156 void wxSpinButton::SetRange(int minVal, int maxVal)
 157 {
 158     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 159
 160     GtkDisableEvents();
 161     gtk_spin_button_set_range((GtkSpinButton*)m_widget, minVal, maxVal);
 162     m_pos = int(gtk_spin_button_get_value((GtkSpinButton*)m_widget));
 163     GtkEnableEvents();
 164 }
 165
 166 void wxSpinButton::OnSize( wxSizeEvent &WXUNUSED(event) )
 167 {
 168     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 169
 170     m_width = DoGetBestSize().x;
 171     gtk_widget_set_size_request( m_widget, m_width, m_height );
 172 }
 173
 174 bool wxSpinButton::Enable( bool enable )
 175 {
 176     if (!base_type::Enable(enable))
 177         return false;
 178
 179     // Work around lack of visual update when enabling
 180     if (enable)
 181         GTKFixSensitivity(false /* fix even if not under mouse */);
 182
 183     return true;
 184 }
 185
 186 void wxSpinButton::GtkDisableEvents() const
 187 {
 188     g_signal_handlers_block_by_func(m_widget,
 189         (gpointer)gtk_value_changed, (void*) this);
 190 }
 191
 192 void wxSpinButton::GtkEnableEvents() const
 193 {
 194     g_signal_handlers_unblock_by_func(m_widget,
 195         (gpointer)gtk_value_changed, (void*) this);
 196 }
 197
 198 GdkWindow *wxSpinButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 199 {
 200 #ifdef __WXGTK3__
 201     // no access to internal GdkWindows
 202     return NULL;
 203 #else
 204     return GTK_SPIN_BUTTON(m_widget)->panel;
 205 #endif
 206 }
 207
 208 wxSize wxSpinButton::DoGetBestSize() const
 209 {
 210     wxSize best(15, 26); // FIXME
 211     CacheBestSize(best);
 212     return best;
 213 }
 214
 215 // static
 216 wxVisualAttributes
 217 wxSpinButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 218 {
 219     return GetDefaultAttributesFromGTKWidget(gtk_spin_button_new_with_range(0, 100, 1));
 220 }
 221
 222 #endif