src/gtk/button.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        button.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "button.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/defs.h"
  18
  19 #if wxUSE_BUTTON
  20
  21 #include "wx/button.h"
  22
  23 #include "wx/gtk/private.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // classes
  27 //-----------------------------------------------------------------------------
  28
  29 class wxButton;
  30
  31 //-----------------------------------------------------------------------------
  32 // idle system
  33 //-----------------------------------------------------------------------------
  34
  35 extern void wxapp_install_idle_handler();
  36 extern bool g_isIdle;
  37
  38 //-----------------------------------------------------------------------------
  39 // data
  40 //-----------------------------------------------------------------------------
  41
  42 extern bool   g_blockEventsOnDrag;
  43
  44 //-----------------------------------------------------------------------------
  45 // "clicked"
  46 //-----------------------------------------------------------------------------
  47
  48 static void gtk_button_clicked_callback( GtkWidget *WXUNUSED(widget), wxButton *button )
  49 {
  50     if (g_isIdle)
  51        wxapp_install_idle_handler();
  52
  53     if (!button->m_hasVMT) return;
  54     if (g_blockEventsOnDrag) return;
  55
  56     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  57     event.SetEventObject(button);
  58     button->GetEventHandler()->ProcessEvent(event);
  59 }
  60
  61 //-----------------------------------------------------------------------------
  62 // wxButton
  63 //-----------------------------------------------------------------------------
  64
  65 IMPLEMENT_DYNAMIC_CLASS(wxButton,wxControl)
  66
  67 wxButton::wxButton()
  68 {
  69 }
  70
  71 wxButton::~wxButton()
  72 {
  73 }
  74
  75 bool wxButton::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
  76       const wxPoint &pos, const wxSize &size,
  77       long style, const wxValidator& validator, const wxString &name )
  78 {
  79     m_needParent = TRUE;
  80     m_acceptsFocus = TRUE;
  81
  82     if (!PreCreation( parent, pos, size ) ||
  83         !CreateBase( parent, id, pos, size, style, validator, name ))
  84     {
  85         wxFAIL_MSG( wxT("wxButton creation failed") );
  86         return FALSE;
  87     }
  88
  89 /*
  90     wxString label2( label );
  91     for (size_t i = 0; i < label2.Len(); i++)
  92     {
  93         if (label2.GetChar(i) == wxT('&'))
  94         label2.SetChar(i,wxT('_'));
  95     }
  96
  97     GtkWidget *accel_label = gtk_accel_label_new( label2.mb_str() );
  98     gtk_widget_show( accel_label );
  99
 100     m_widget = gtk_button_new();
 101     gtk_container_add( GTK_CONTAINER(m_widget), accel_label );
 102
 103     gtk_accel_label_set_accel_widget( GTK_ACCEL_LABEL(accel_label), m_widget );
 104
 105     guint accel_key = gtk_label_parse_uline (GTK_LABEL(accel_label), label2.mb_str() );
 106     gtk_accel_label_refetch( GTK_ACCEL_LABEL(accel_label) );
 107
 108     wxControl::SetLabel( label );
 109 */
 110
 111     m_widget = gtk_button_new_with_label("");
 112
 113     float x_alignment = 0.5;
 114     if (HasFlag(wxBU_LEFT))
 115         x_alignment = 0.0;
 116     else if (HasFlag(wxBU_RIGHT))
 117         x_alignment = 1.0;
 118
 119     float y_alignment = 0.5;
 120     if (HasFlag(wxBU_TOP))
 121         y_alignment = 0.0;
 122     else if (HasFlag(wxBU_BOTTOM))
 123         y_alignment = 1.0;
 124
 125     gtk_misc_set_alignment (GTK_MISC (BUTTON_CHILD (m_widget)),
 126                             x_alignment, y_alignment);
 127
 128     SetLabel( label );
 129
 130     if (style & wxNO_BORDER)
 131        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 132
 133     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 134       GTK_SIGNAL_FUNC(gtk_button_clicked_callback), (gpointer*)this );
 135
 136     m_parent->DoAddChild( this );
 137
 138     PostCreation();
 139     InheritAttributes();
 140
 141     wxSize best_size( DoGetBestSize() );
 142     wxSize new_size( size );
 143     if (new_size.x == -1)
 144         new_size.x = best_size.x;
 145     if (new_size.y == -1)
 146         new_size.y = best_size.y;
 147     if ((new_size.x != size.x) || (new_size.y != size.y))
 148         SetSize( new_size.x, new_size.y );
 149
 150     SetSize( new_size );
 151
 152     return TRUE;
 153 }
 154
 155 void wxButton::SetDefault()
 156 {
 157     wxWindow *parent = GetParent();
 158     wxCHECK_RET( parent, _T("button without parent?") );
 159
 160     parent->SetDefaultItem(this);
 161
 162     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 163     gtk_widget_grab_default( m_widget );
 164
 165     SetSize( m_x, m_y, m_width, m_height );
 166 }
 167
 168 /* static */
 169 wxSize wxButton::GetDefaultSize()
 170 {
 171     return wxSize(80,26);
 172 }
 173
 174 void wxButton::SetLabel( const wxString &label )
 175 {
 176     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 177
 178     wxControl::SetLabel( label );
 179
 180 #ifdef __WXGTK20__
 181     wxString label2 = PrepareLabelMnemonics( label );
 182     gtk_label_set_text_with_mnemonic( GTK_LABEL( BUTTON_CHILD(m_widget) ), wxGTK_CONV( label2 ) );
 183 #else
 184     gtk_label_set( GTK_LABEL( BUTTON_CHILD(m_widget) ), wxGTK_CONV( GetLabel() ) );
 185 #endif
 186 }
 187
 188 bool wxButton::Enable( bool enable )
 189 {
 190     if ( !wxControl::Enable( enable ) )
 191         return FALSE;
 192
 193     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 194
 195     return TRUE;
 196 }
 197
 198 bool wxButton::IsOwnGtkWindow( GdkWindow *window )
 199 {
 200 #ifdef __WXGTK20__
 201     return GTK_BUTTON(m_widget)->event_window;
 202 #else
 203     return (window == m_widget->window);
 204 #endif
 205 }
 206
 207 void wxButton::ApplyWidgetStyle()
 208 {
 209     SetWidgetStyle();
 210     gtk_widget_set_style( m_widget, m_widgetStyle );
 211     gtk_widget_set_style( BUTTON_CHILD(m_widget), m_widgetStyle );
 212 }
 213
 214 wxSize wxButton::DoGetBestSize() const
 215 {
 216     // the default button in wxGTK is bigger than the other ones because of an
 217     // extra border around it, but we don't want to take it into account in
 218     // our size calculations (otherwsie the result is visually ugly), so
 219     // always return the size of non default button from here
 220     const bool isDefault = GTK_WIDGET_HAS_DEFAULT(m_widget);
 221     if ( isDefault )
 222     {
 223         // temporarily unset default flag
 224         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 225     }
 226
 227     wxSize ret( wxControl::DoGetBestSize() );
 228
 229     if ( isDefault )
 230     {
 231         // set it back again
 232         GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 233     }
 234
 235 #ifndef __WXGTK20__
 236     ret.x += 10;  // add a few pixels for sloppy (but common) themes
 237 #endif
 238
 239     if (!HasFlag(wxBU_EXACTFIT))
 240     {
 241         if (ret.x < 80) ret.x = 80;
 242     }
 243
 244     return ret;
 245 }
 246
 247 #endif // wxUSE_BUTTON
 248