src/gtk1/button.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/button.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_BUTTON
  14
  15 #include "wx/button.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/toplevel.h"
  19 #endif
  20
  21 #include "wx/stockitem.h"
  22
  23 #include "wx/gtk1/private.h"
  24 #include "wx/gtk1/win_gtk.h"
  25
  26 //-----------------------------------------------------------------------------
  27 // classes
  28 //-----------------------------------------------------------------------------
  29
  30 class wxButton;
  31
  32 //-----------------------------------------------------------------------------
  33 // idle system
  34 //-----------------------------------------------------------------------------
  35
  36 extern void wxapp_install_idle_handler();
  37 extern bool g_isIdle;
  38
  39 //-----------------------------------------------------------------------------
  40 // data
  41 //-----------------------------------------------------------------------------
  42
  43 extern bool   g_blockEventsOnDrag;
  44
  45 //-----------------------------------------------------------------------------
  46 // "clicked"
  47 //-----------------------------------------------------------------------------
  48
  49 extern "C" {
  50 static void gtk_button_clicked_callback( GtkWidget *WXUNUSED(widget), wxButton *button )
  51 {
  52     if (g_isIdle)
  53        wxapp_install_idle_handler();
  54
  55     if (!button->m_hasVMT) return;
  56     if (g_blockEventsOnDrag) return;
  57
  58     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  59     event.SetEventObject(button);
  60     button->GetEventHandler()->ProcessEvent(event);
  61 }
  62 }
  63
  64 //-----------------------------------------------------------------------------
  65 // "style_set" from m_widget
  66 //-----------------------------------------------------------------------------
  67
  68 static gint
  69 gtk_button_style_set_callback( GtkWidget *m_widget, GtkStyle *WXUNUSED(style), wxButton *win )
  70 {
  71     if (g_isIdle)
  72         wxapp_install_idle_handler();
  73
  74     int left_border = 0;
  75     int right_border = 0;
  76     int top_border = 0;
  77     int bottom_border = 0;
  78
  79     /* the default button has a border around it */
  80     if (GTK_WIDGET_CAN_DEFAULT(m_widget))
  81     {
  82         left_border = 6;
  83         right_border = 6;
  84         top_border = 6;
  85         bottom_border = 5;
  86         win->DoMoveWindow( win->m_x-top_border,
  87                            win->m_y-left_border,
  88                            win->m_width+left_border+right_border,
  89                            win->m_height+top_border+bottom_border );
  90     }
  91
  92     return FALSE;
  93 }
  94
  95 //-----------------------------------------------------------------------------
  96 // wxButton
  97 //-----------------------------------------------------------------------------
  98
  99 IMPLEMENT_DYNAMIC_CLASS(wxButton,wxControl)
 100
 101 wxButton::wxButton()
 102 {
 103 }
 104
 105 wxButton::~wxButton()
 106 {
 107 }
 108
 109 bool wxButton::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
 110       const wxPoint &pos, const wxSize &size,
 111       long style, const wxValidator& validator, const wxString &name )
 112 {
 113     m_needParent = true;
 114     m_acceptsFocus = true;
 115
 116     if (!PreCreation( parent, pos, size ) ||
 117         !CreateBase( parent, id, pos, size, style, validator, name ))
 118     {
 119         wxFAIL_MSG( wxT("wxButton creation failed") );
 120         return false;
 121     }
 122
 123     m_widget = gtk_button_new_with_label("");
 124
 125     float x_alignment = 0.5;
 126     if (HasFlag(wxBU_LEFT))
 127         x_alignment = 0.0;
 128     else if (HasFlag(wxBU_RIGHT))
 129         x_alignment = 1.0;
 130
 131     float y_alignment = 0.5;
 132     if (HasFlag(wxBU_TOP))
 133         y_alignment = 0.0;
 134     else if (HasFlag(wxBU_BOTTOM))
 135         y_alignment = 1.0;
 136
 137     if (GTK_IS_MISC(BUTTON_CHILD(m_widget)))
 138         gtk_misc_set_alignment (GTK_MISC (BUTTON_CHILD (m_widget)),
 139                                 x_alignment, y_alignment);
 140
 141     SetLabel(label);
 142
 143     if (style & wxNO_BORDER)
 144        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 145
 146     gtk_signal_connect_after( GTK_OBJECT(m_widget), "clicked",
 147       GTK_SIGNAL_FUNC(gtk_button_clicked_callback), (gpointer*)this );
 148
 149     gtk_signal_connect_after( GTK_OBJECT(m_widget), "style_set",
 150       GTK_SIGNAL_FUNC(gtk_button_style_set_callback), (gpointer*) this );
 151
 152     m_parent->DoAddChild( this );
 153
 154     PostCreation(size);
 155
 156     return true;
 157 }
 158
 159
 160 void wxButton::SetDefault()
 161 {
 162     wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
 163     wxCHECK_RET( tlw, _T("button without top level window?") );
 164
 165     tlw->SetDefaultItem(this);
 166
 167     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 168     gtk_widget_grab_default( m_widget );
 169
 170     // resize for default border
 171     gtk_button_style_set_callback( m_widget, NULL, this );
 172 }
 173
 174 /* static */
 175 wxSize wxButtonBase::GetDefaultSize()
 176 {
 177     return wxSize(80,26);
 178 }
 179
 180 void wxButton::SetLabel( const wxString &lbl )
 181 {
 182     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 183
 184     wxString label(lbl);
 185
 186     if (label.empty() && wxIsStockID(m_windowId))
 187         label = wxGetStockLabel(m_windowId);
 188
 189     wxControl::SetLabel(label);
 190
 191     const wxString labelGTK = GTKRemoveMnemonics(label);
 192
 193     gtk_label_set(GTK_LABEL(BUTTON_CHILD(m_widget)), wxGTK_CONV(labelGTK));
 194 }
 195
 196 bool wxButton::Enable( bool enable )
 197 {
 198     if ( !wxControl::Enable( enable ) )
 199         return false;
 200
 201     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 202
 203     return true;
 204 }
 205
 206 bool wxButton::IsOwnGtkWindow( GdkWindow *window )
 207 {
 208     return (window == m_widget->window);
 209 }
 210
 211 void wxButton::DoApplyWidgetStyle(GtkRcStyle *style)
 212 {
 213     gtk_widget_modify_style(m_widget, style);
 214     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 215 }
 216
 217 wxSize wxButton::DoGetBestSize() const
 218 {
 219     // the default button in wxGTK is bigger than the other ones because of an
 220     // extra border around it, but we don't want to take it into account in
 221     // our size calculations (otherwsie the result is visually ugly), so
 222     // always return the size of non default button from here
 223     const bool isDefault = GTK_WIDGET_HAS_DEFAULT(m_widget);
 224     if ( isDefault )
 225     {
 226         // temporarily unset default flag
 227         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 228     }
 229
 230     wxSize ret( wxControl::DoGetBestSize() );
 231
 232     if ( isDefault )
 233     {
 234         // set it back again
 235         GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 236     }
 237
 238     ret.x += 10;  // add a few pixels for sloppy (but common) themes
 239
 240     if (!HasFlag(wxBU_EXACTFIT))
 241     {
 242         wxSize defaultSize = GetDefaultSize();
 243         if (ret.x < defaultSize.x) ret.x = defaultSize.x;
 244         if (ret.y < defaultSize.y) ret.y = defaultSize.y;
 245     }
 246
 247     CacheBestSize(ret);
 248     return ret;
 249 }
 250
 251 // static
 252 wxVisualAttributes
 253 wxButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 254 {
 255     return GetDefaultAttributesFromGTKWidget(gtk_button_new);
 256 }
 257
 258 #endif // wxUSE_BUTTON