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 #ifdef __GNUG__
  11 #pragma implementation "button.h"
  12 #endif
  13
  14 #include "wx/button.h"
  15
  16 #include "gdk/gdk.h"
  17 #include "gtk/gtk.h"
  18
  19 //-----------------------------------------------------------------------------
  20 // classes
  21 //-----------------------------------------------------------------------------
  22
  23 class wxButton;
  24
  25 //-----------------------------------------------------------------------------
  26 // idle system
  27 //-----------------------------------------------------------------------------
  28
  29 extern void wxapp_install_idle_handler();
  30 extern bool g_isIdle;
  31
  32 //-----------------------------------------------------------------------------
  33 // data
  34 //-----------------------------------------------------------------------------
  35
  36 extern bool   g_blockEventsOnDrag;
  37
  38 //-----------------------------------------------------------------------------
  39 // "clicked"
  40 //-----------------------------------------------------------------------------
  41
  42 static void gtk_button_clicked_callback( GtkWidget *WXUNUSED(widget), wxButton *button )
  43 {
  44     if (g_isIdle) wxapp_install_idle_handler();
  45
  46     if (!button->m_hasVMT) return;
  47     if (g_blockEventsOnDrag) return;
  48
  49     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  50     event.SetEventObject(button);
  51     button->GetEventHandler()->ProcessEvent(event);
  52 }
  53
  54 //-----------------------------------------------------------------------------
  55 // wxButton
  56 //-----------------------------------------------------------------------------
  57
  58 IMPLEMENT_DYNAMIC_CLASS(wxButton,wxControl)
  59
  60 wxButton::wxButton()
  61 {
  62 }
  63
  64 wxButton::~wxButton()
  65 {
  66     if (m_clientData) delete m_clientData;
  67 }
  68
  69 bool wxButton::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
  70       const wxPoint &pos, const wxSize &size,
  71       long style, const wxValidator& validator, const wxString &name )
  72 {
  73     m_clientData = (wxClientData*) NULL;
  74     m_needParent = TRUE;
  75     m_acceptsFocus = TRUE;
  76
  77     wxSize newSize = size;
  78
  79     PreCreation( parent, id, pos, newSize, style, name );
  80
  81     SetValidator( validator );
  82
  83     m_widget = gtk_button_new_with_label( "" );
  84
  85 #if (GTK_MINOR_VERSION > 0)
  86     if (style & wxNO_BORDER)
  87        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
  88 #endif
  89
  90     SetLabel(label);
  91
  92     if (newSize.x == -1) newSize.x = 15+gdk_string_measure( m_widget->style->font, label.mbc_str() );
  93     if (newSize.y == -1) newSize.y = 26;
  94     SetSize( newSize.x, newSize.y );
  95
  96     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
  97       GTK_SIGNAL_FUNC(gtk_button_clicked_callback), (gpointer*)this );
  98
  99     m_parent->DoAddChild( this );
 100
 101     PostCreation();
 102
 103     SetBackgroundColour( parent->GetBackgroundColour() );
 104     SetForegroundColour( parent->GetForegroundColour() );
 105     SetFont( parent->GetFont() );
 106
 107     Show( TRUE );
 108
 109     return TRUE;
 110 }
 111
 112 void wxButton::SetDefault(void)
 113 {
 114     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 115     gtk_widget_grab_default( m_widget );
 116
 117     SetSize( m_x, m_y, m_width, m_height );
 118 }
 119
 120 void wxButton::SetLabel( const wxString &label )
 121 {
 122     wxCHECK_RET( m_widget != NULL, _T("invalid button") );
 123
 124     wxControl::SetLabel( label );
 125
 126     gtk_label_set( GTK_LABEL( GTK_BUTTON(m_widget)->child ), GetLabel().mbc_str() );
 127 }
 128
 129 bool wxButton::Enable( bool enable )
 130 {
 131     if ( !wxControl::Enable( enable ) )
 132         return FALSE;
 133
 134     gtk_widget_set_sensitive( GTK_BUTTON(m_widget)->child, enable );
 135
 136     return TRUE;
 137 }
 138
 139 void wxButton::ApplyWidgetStyle()
 140 {
 141     SetWidgetStyle();
 142     gtk_widget_set_style( m_widget, m_widgetStyle );
 143     gtk_widget_set_style( GTK_BUTTON(m_widget)->child, m_widgetStyle );
 144 }