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)
  45        wxapp_install_idle_handler();
  46
  47     if (!button->m_hasVMT) return;
  48     if (g_blockEventsOnDrag) return;
  49
  50     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  51     event.SetEventObject(button);
  52     button->GetEventHandler()->ProcessEvent(event);
  53 }
  54
  55 //-----------------------------------------------------------------------------
  56 // wxButton
  57 //-----------------------------------------------------------------------------
  58
  59 IMPLEMENT_DYNAMIC_CLASS(wxButton,wxControl)
  60
  61 wxButton::wxButton()
  62 {
  63 }
  64
  65 wxButton::~wxButton()
  66 {
  67     if (m_clientData) delete m_clientData;
  68 }
  69
  70 bool wxButton::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
  71       const wxPoint &pos, const wxSize &size,
  72       long style, const wxValidator& validator, const wxString &name )
  73 {
  74     m_clientData = (wxClientData*) NULL;
  75     m_needParent = TRUE;
  76     m_acceptsFocus = TRUE;
  77
  78     if (!PreCreation( parent, pos, size ) ||
  79         !CreateBase( parent, id, pos, size, style, validator, name ))
  80     {
  81         wxFAIL_MSG( _T("wxButton creation failed") );
  82         return FALSE;
  83     }
  84
  85
  86     m_widget = gtk_button_new_with_label( "" );
  87
  88 #if (GTK_MINOR_VERSION > 0)
  89     if (style & wxNO_BORDER)
  90        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
  91 #endif
  92
  93     SetLabel(label);
  94
  95     int x = 0;  int y = 0;
  96     wxFont new_font( parent->GetFont() );
  97     GetTextExtent( m_label, &x, &y, (int*)NULL, (int*)NULL, &new_font );
  98
  99     wxSize newSize = size;
 100     if (newSize.x == -1)
 101     {
 102         newSize.x = 12+x;
 103         if (newSize.x < 80) newSize.x = 80;
 104     }
 105     if (newSize.y == -1)
 106     {
 107         newSize.y = 11+y;
 108         if (newSize.x < 26) newSize.x = 26;
 109     }
 110
 111     SetSize( newSize.x, newSize.y );
 112
 113     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 114       GTK_SIGNAL_FUNC(gtk_button_clicked_callback), (gpointer*)this );
 115
 116     m_parent->DoAddChild( this );
 117
 118     PostCreation();
 119
 120     SetBackgroundColour( parent->GetBackgroundColour() );
 121     SetForegroundColour( parent->GetForegroundColour() );
 122     SetFont( parent->GetFont() );
 123
 124     Show( TRUE );
 125
 126     return TRUE;
 127 }
 128
 129 void wxButton::SetDefault(void)
 130 {
 131     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 132     gtk_widget_grab_default( m_widget );
 133
 134     SetSize( m_x, m_y, m_width, m_height );
 135 }
 136
 137 /* static */
 138 wxSize wxButton::GetDefaultSize()
 139 {
 140     return wxSize(80,26);
 141 }
 142
 143 void wxButton::SetLabel( const wxString &label )
 144 {
 145     wxCHECK_RET( m_widget != NULL, _T("invalid button") );
 146
 147     wxControl::SetLabel( label );
 148
 149     gtk_label_set( GTK_LABEL( GTK_BUTTON(m_widget)->child ), GetLabel().mbc_str() );
 150 }
 151
 152 bool wxButton::Enable( bool enable )
 153 {
 154     if ( !wxControl::Enable( enable ) )
 155         return FALSE;
 156
 157     gtk_widget_set_sensitive( GTK_BUTTON(m_widget)->child, enable );
 158
 159     return TRUE;
 160 }
 161
 162 void wxButton::ApplyWidgetStyle()
 163 {
 164     SetWidgetStyle();
 165     gtk_widget_set_style( m_widget, m_widgetStyle );
 166     gtk_widget_set_style( GTK_BUTTON(m_widget)->child, m_widgetStyle );
 167 }