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 }
  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_needParent = TRUE;
  74     m_acceptsFocus = TRUE;
  75
  76     if (!PreCreation( parent, pos, size ) ||
  77         !CreateBase( parent, id, pos, size, style, validator, name ))
  78     {
  79         wxFAIL_MSG( wxT("wxButton creation failed") );
  80         return FALSE;
  81     }
  82
  83
  84     m_widget = gtk_button_new_with_label( "" );
  85
  86 #if (GTK_MINOR_VERSION > 0)
  87     if (style & wxNO_BORDER)
  88        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
  89 #endif
  90
  91     SetLabel(label);
  92
  93     int x = 0;  int y = 0;
  94     wxFont new_font( parent->GetFont() );
  95     GetTextExtent( m_label, &x, &y, (int*)NULL, (int*)NULL, &new_font );
  96
  97     wxSize newSize = size;
  98     if (newSize.x == -1)
  99     {
 100         newSize.x = 12+x;
 101         if (newSize.x < 80) newSize.x = 80;
 102     }
 103     if (newSize.y == -1)
 104     {
 105         newSize.y = 11+y;
 106         if (newSize.x < 26) newSize.x = 26;
 107     }
 108
 109     SetSize( newSize.x, newSize.y );
 110
 111     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 112       GTK_SIGNAL_FUNC(gtk_button_clicked_callback), (gpointer*)this );
 113
 114     m_parent->DoAddChild( this );
 115
 116     PostCreation();
 117
 118     SetBackgroundColour( parent->GetBackgroundColour() );
 119     SetForegroundColour( parent->GetForegroundColour() );
 120     SetFont( parent->GetFont() );
 121
 122     Show( TRUE );
 123
 124     return TRUE;
 125 }
 126
 127 void wxButton::SetDefault()
 128 {
 129     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 130     gtk_widget_grab_default( m_widget );
 131
 132     SetSize( m_x, m_y, m_width, m_height );
 133 }
 134
 135 /* static */
 136 wxSize wxButton::GetDefaultSize()
 137 {
 138     return wxSize(80,26);
 139 }
 140
 141 void wxButton::SetLabel( const wxString &label )
 142 {
 143     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 144
 145     wxControl::SetLabel( label );
 146
 147     gtk_label_set( GTK_LABEL( GTK_BUTTON(m_widget)->child ), GetLabel().mbc_str() );
 148 }
 149
 150 bool wxButton::Enable( bool enable )
 151 {
 152     if ( !wxControl::Enable( enable ) )
 153         return FALSE;
 154
 155     gtk_widget_set_sensitive( GTK_BUTTON(m_widget)->child, enable );
 156
 157     return TRUE;
 158 }
 159
 160 void wxButton::ApplyWidgetStyle()
 161 {
 162     SetWidgetStyle();
 163     gtk_widget_set_style( m_widget, m_widgetStyle );
 164     gtk_widget_set_style( GTK_BUTTON(m_widget)->child, m_widgetStyle );
 165 }