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/defs.h"
  15
  16 #if wxUSE_BUTTON
  17
  18 #include "wx/button.h"
  19
  20 #include "wx/gtk/private.h"
  21
  22 //-----------------------------------------------------------------------------
  23 // classes
  24 //-----------------------------------------------------------------------------
  25
  26 class wxButton;
  27
  28 //-----------------------------------------------------------------------------
  29 // idle system
  30 //-----------------------------------------------------------------------------
  31
  32 extern void wxapp_install_idle_handler();
  33 extern bool g_isIdle;
  34
  35 //-----------------------------------------------------------------------------
  36 // data
  37 //-----------------------------------------------------------------------------
  38
  39 extern bool   g_blockEventsOnDrag;
  40
  41 //-----------------------------------------------------------------------------
  42 // "clicked"
  43 //-----------------------------------------------------------------------------
  44
  45 static void gtk_button_clicked_callback( GtkWidget *WXUNUSED(widget), wxButton *button )
  46 {
  47     if (g_isIdle)
  48        wxapp_install_idle_handler();
  49
  50     if (!button->m_hasVMT) return;
  51     if (g_blockEventsOnDrag) return;
  52
  53     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  54     event.SetEventObject(button);
  55     button->GetEventHandler()->ProcessEvent(event);
  56 }
  57
  58 //-----------------------------------------------------------------------------
  59 // wxButton
  60 //-----------------------------------------------------------------------------
  61
  62 IMPLEMENT_DYNAMIC_CLASS(wxButton,wxControl)
  63
  64 wxButton::wxButton()
  65 {
  66 }
  67
  68 wxButton::~wxButton()
  69 {
  70 }
  71
  72 bool wxButton::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
  73       const wxPoint &pos, const wxSize &size,
  74       long style, const wxValidator& validator, const wxString &name )
  75 {
  76     m_needParent = TRUE;
  77     m_acceptsFocus = TRUE;
  78
  79     if (!PreCreation( parent, pos, size ) ||
  80         !CreateBase( parent, id, pos, size, style, validator, name ))
  81     {
  82         wxFAIL_MSG( wxT("wxButton creation failed") );
  83         return FALSE;
  84     }
  85
  86 /*
  87     wxString label2( label );
  88     for (size_t i = 0; i < label2.Len(); i++)
  89     {
  90         if (label2.GetChar(i) == wxT('&'))
  91         label2.SetChar(i,wxT('_'));
  92     }
  93
  94     GtkWidget *accel_label = gtk_accel_label_new( label2.mb_str() );
  95     gtk_widget_show( accel_label );
  96
  97     m_widget = gtk_button_new();
  98     gtk_container_add( GTK_CONTAINER(m_widget), accel_label );
  99
 100     gtk_accel_label_set_accel_widget( GTK_ACCEL_LABEL(accel_label), m_widget );
 101
 102     guint accel_key = gtk_label_parse_uline (GTK_LABEL(accel_label), label2.mb_str() );
 103     gtk_accel_label_refetch( GTK_ACCEL_LABEL(accel_label) );
 104
 105     wxControl::SetLabel( label );
 106 */
 107
 108     m_widget = gtk_button_new_with_label("");
 109
 110     float x_alignment = 0.5;
 111     if (HasFlag(wxBU_LEFT))
 112         x_alignment = 0.0;
 113     else if (HasFlag(wxBU_RIGHT))
 114         x_alignment = 1.0;
 115
 116     float y_alignment = 0.5;
 117     if (HasFlag(wxBU_TOP))
 118         y_alignment = 0.0;
 119     else if (HasFlag(wxBU_BOTTOM))
 120         y_alignment = 1.0;
 121
 122     gtk_misc_set_alignment (GTK_MISC (BUTTON_CHILD (m_widget)),
 123                             x_alignment, y_alignment);
 124
 125     SetLabel( label );
 126
 127     if (style & wxNO_BORDER)
 128        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 129
 130     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 131       GTK_SIGNAL_FUNC(gtk_button_clicked_callback), (gpointer*)this );
 132
 133     m_parent->DoAddChild( this );
 134
 135     PostCreation();
 136
 137     SetFont( parent->GetFont() );
 138
 139     wxSize best_size( DoGetBestSize() );
 140     wxSize new_size( size );
 141     if (new_size.x == -1)
 142         new_size.x = best_size.x;
 143     if (new_size.y == -1)
 144         new_size.y = best_size.y;
 145     if ((new_size.x != size.x) || (new_size.y != size.y))
 146         SetSize( new_size.x, new_size.y );
 147
 148     SetSize( new_size );
 149
 150     SetBackgroundColour( parent->GetBackgroundColour() );
 151     SetForegroundColour( parent->GetForegroundColour() );
 152
 153     Show( TRUE );
 154
 155     return TRUE;
 156 }
 157
 158 void wxButton::SetDefault()
 159 {
 160     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 161     gtk_widget_grab_default( m_widget );
 162
 163     SetSize( m_x, m_y, m_width, m_height );
 164 }
 165
 166 /* static */
 167 wxSize wxButton::GetDefaultSize()
 168 {
 169     return wxSize(80,26);
 170 }
 171
 172 void wxButton::SetLabel( const wxString &label )
 173 {
 174     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 175
 176     wxControl::SetLabel( label );
 177
 178     gtk_label_set( GTK_LABEL( BUTTON_CHILD(m_widget) ), wxGTK_CONV( GetLabel() ) );
 179 }
 180
 181 bool wxButton::Enable( bool enable )
 182 {
 183     if ( !wxControl::Enable( enable ) )
 184         return FALSE;
 185
 186     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 187
 188     return TRUE;
 189 }
 190
 191 bool wxButton::IsOwnGtkWindow( GdkWindow *window )
 192 {
 193 #ifdef __WXGTK20__
 194     return GTK_BUTTON(m_widget)->event_window;
 195 #else
 196     return (window == m_widget->window);
 197 #endif
 198 }
 199
 200 void wxButton::ApplyWidgetStyle()
 201 {
 202     SetWidgetStyle();
 203     gtk_widget_set_style( m_widget, m_widgetStyle );
 204     gtk_widget_set_style( BUTTON_CHILD(m_widget), m_widgetStyle );
 205 }
 206
 207 wxSize wxButton::DoGetBestSize() const
 208 {
 209     wxSize ret( wxControl::DoGetBestSize() );
 210
 211     if (!HasFlag(wxBU_EXACTFIT))
 212     {
 213         if (ret.x < 80) ret.x = 80;
 214     }
 215
 216     return ret;
 217 }
 218
 219 #endif // wxUSE_BUTTON
 220