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 #ifdef __WXGTK20__
 112     m_widget = gtk_button_new_with_mnemonic("");
 113 #else
 114     m_widget = gtk_button_new_with_label("");
 115 #endif
 116
 117     float x_alignment = 0.5;
 118     if (HasFlag(wxBU_LEFT))
 119         x_alignment = 0.0;
 120     else if (HasFlag(wxBU_RIGHT))
 121         x_alignment = 1.0;
 122
 123     float y_alignment = 0.5;
 124     if (HasFlag(wxBU_TOP))
 125         y_alignment = 0.0;
 126     else if (HasFlag(wxBU_BOTTOM))
 127         y_alignment = 1.0;
 128
 129     gtk_misc_set_alignment (GTK_MISC (BUTTON_CHILD (m_widget)),
 130                             x_alignment, y_alignment);
 131
 132     SetLabel( label );
 133
 134     if (style & wxNO_BORDER)
 135        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 136
 137     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 138       GTK_SIGNAL_FUNC(gtk_button_clicked_callback), (gpointer*)this );
 139
 140     m_parent->DoAddChild( this );
 141
 142     PostCreation(size);
 143
 144     return TRUE;
 145 }
 146
 147 void wxButton::SetDefault()
 148 {
 149     wxWindow *parent = GetParent();
 150     wxCHECK_RET( parent, _T("button without parent?") );
 151
 152     parent->SetDefaultItem(this);
 153
 154     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 155     gtk_widget_grab_default( m_widget );
 156
 157     SetSize( m_x, m_y, m_width, m_height );
 158 }
 159
 160 /* static */
 161 wxSize wxButton::GetDefaultSize()
 162 {
 163     return wxSize(80,26);
 164 }
 165
 166 void wxButton::SetLabel( const wxString &label )
 167 {
 168     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 169
 170     wxControl::SetLabel( label );
 171
 172 #ifdef __WXGTK20__
 173     wxString label2 = PrepareLabelMnemonics( label );
 174     gtk_button_set_label( GTK_BUTTON(m_widget), wxGTK_CONV(label2) );
 175 #else
 176     gtk_label_set( GTK_LABEL( BUTTON_CHILD(m_widget) ), wxGTK_CONV( GetLabel() ) );
 177 #endif
 178 }
 179
 180 bool wxButton::Enable( bool enable )
 181 {
 182     if ( !wxControl::Enable( enable ) )
 183         return FALSE;
 184
 185     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 186
 187     return TRUE;
 188 }
 189
 190 bool wxButton::IsOwnGtkWindow( GdkWindow *window )
 191 {
 192 #ifdef __WXGTK20__
 193     return GTK_BUTTON(m_widget)->event_window;
 194 #else
 195     return (window == m_widget->window);
 196 #endif
 197 }
 198
 199 void wxButton::DoApplyWidgetStyle(GtkRcStyle *style)
 200 {
 201     gtk_widget_modify_style(m_widget, style);
 202     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 203 }
 204
 205 wxSize wxButton::DoGetBestSize() const
 206 {
 207     // the default button in wxGTK is bigger than the other ones because of an
 208     // extra border around it, but we don't want to take it into account in
 209     // our size calculations (otherwsie the result is visually ugly), so
 210     // always return the size of non default button from here
 211     const bool isDefault = GTK_WIDGET_HAS_DEFAULT(m_widget);
 212     if ( isDefault )
 213     {
 214         // temporarily unset default flag
 215         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 216     }
 217
 218     wxSize ret( wxControl::DoGetBestSize() );
 219
 220     if ( isDefault )
 221     {
 222         // set it back again
 223         GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 224     }
 225
 226 #ifndef __WXGTK20__
 227     ret.x += 10;  // add a few pixels for sloppy (but common) themes
 228 #endif
 229
 230     if (!HasFlag(wxBU_EXACTFIT))
 231     {
 232         if (ret.x < 80) ret.x = 80;
 233     }
 234
 235     CacheBestSize(ret);
 236     return ret;
 237 }
 238
 239 // static
 240 wxVisualAttributes
 241 wxButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 242 {
 243     return GetDefaultAttributesFromGTKWidget(gtk_button_new);
 244 }
 245
 246 #endif // wxUSE_BUTTON
 247