src/gtk/bmpbuttn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gtk/bmpbuttn.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "bmpbuttn.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/defs.h"
  18
  19 #if wxUSE_BMPBUTTON
  20
  21 #include "wx/bmpbuttn.h"
  22
  23 #include "wx/gtk/private.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // classes
  27 //-----------------------------------------------------------------------------
  28
  29 class wxBitmapButton;
  30
  31 //-----------------------------------------------------------------------------
  32 // idle system
  33 //-----------------------------------------------------------------------------
  34
  35 extern void wxapp_install_idle_handler();
  36 extern bool g_isIdle;
  37
  38 //-----------------------------------------------------------------------------
  39 // data
  40 //-----------------------------------------------------------------------------
  41
  42 extern bool   g_blockEventsOnDrag;
  43
  44 //-----------------------------------------------------------------------------
  45 // "clicked"
  46 //-----------------------------------------------------------------------------
  47
  48 static void gtk_bmpbutton_clicked_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  49 {
  50     if (g_isIdle)
  51         wxapp_install_idle_handler();
  52
  53     if (!button->m_hasVMT) return;
  54     if (g_blockEventsOnDrag) return;
  55
  56     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  57     event.SetEventObject(button);
  58     button->GetEventHandler()->ProcessEvent(event);
  59 }
  60
  61 //-----------------------------------------------------------------------------
  62 // "enter"
  63 //-----------------------------------------------------------------------------
  64
  65 static void gtk_bmpbutton_enter_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  66 {
  67     if (!button->m_hasVMT) return;
  68     if (g_blockEventsOnDrag) return;
  69
  70     button->HasFocus();
  71 }
  72
  73 //-----------------------------------------------------------------------------
  74 // "leave"
  75 //-----------------------------------------------------------------------------
  76
  77 static void gtk_bmpbutton_leave_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  78 {
  79     if (!button->m_hasVMT) return;
  80     if (g_blockEventsOnDrag) return;
  81
  82     button->NotFocus();
  83 }
  84
  85 //-----------------------------------------------------------------------------
  86 // "pressed"
  87 //-----------------------------------------------------------------------------
  88
  89 static void gtk_bmpbutton_press_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  90 {
  91     if (!button->m_hasVMT) return;
  92     if (g_blockEventsOnDrag) return;
  93
  94     button->StartSelect();
  95 }
  96
  97 //-----------------------------------------------------------------------------
  98 // "released"
  99 //-----------------------------------------------------------------------------
 100
 101 static void gtk_bmpbutton_release_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
 102 {
 103     if (!button->m_hasVMT) return;
 104     if (g_blockEventsOnDrag) return;
 105
 106     button->EndSelect();
 107 }
 108
 109 //-----------------------------------------------------------------------------
 110 // wxBitmapButton
 111 //-----------------------------------------------------------------------------
 112
 113 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton,wxButton)
 114
 115 void wxBitmapButton::Init()
 116 {
 117     m_hasFocus =
 118     m_isSelected = FALSE;
 119 }
 120
 121 bool wxBitmapButton::Create( wxWindow *parent,
 122                              wxWindowID id,
 123                              const wxBitmap& bitmap,
 124                              const wxPoint& pos,
 125                              const wxSize& size,
 126                              long style,
 127                              const wxValidator& validator,
 128                              const wxString &name )
 129 {
 130     m_needParent = TRUE;
 131     m_acceptsFocus = TRUE;
 132
 133     if (!PreCreation( parent, pos, size ) ||
 134         !CreateBase( parent, id, pos, size, style, validator, name ))
 135     {
 136         wxFAIL_MSG( wxT("wxBitmapButton creation failed") );
 137         return FALSE;
 138     }
 139
 140     m_bmpNormal   =
 141     m_bmpDisabled =
 142     m_bmpFocus    =
 143     m_bmpSelected = bitmap;
 144
 145     m_widget = gtk_button_new();
 146
 147     if (style & wxNO_BORDER)
 148        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 149
 150     if (m_bmpNormal.Ok())
 151     {
 152         OnSetBitmap();
 153     }
 154
 155     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 156       GTK_SIGNAL_FUNC(gtk_bmpbutton_clicked_callback), (gpointer*)this );
 157
 158     gtk_signal_connect( GTK_OBJECT(m_widget), "enter",
 159       GTK_SIGNAL_FUNC(gtk_bmpbutton_enter_callback), (gpointer*)this );
 160     gtk_signal_connect( GTK_OBJECT(m_widget), "leave",
 161       GTK_SIGNAL_FUNC(gtk_bmpbutton_leave_callback), (gpointer*)this );
 162     gtk_signal_connect( GTK_OBJECT(m_widget), "pressed",
 163       GTK_SIGNAL_FUNC(gtk_bmpbutton_press_callback), (gpointer*)this );
 164     gtk_signal_connect( GTK_OBJECT(m_widget), "released",
 165       GTK_SIGNAL_FUNC(gtk_bmpbutton_release_callback), (gpointer*)this );
 166
 167     m_parent->DoAddChild( this );
 168
 169     PostCreation(size);
 170
 171     return TRUE;
 172 }
 173
 174 void wxBitmapButton::SetDefault()
 175 {
 176     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 177     gtk_widget_grab_default( m_widget );
 178
 179     SetSize( m_x, m_y, m_width, m_height );
 180 }
 181
 182 void wxBitmapButton::SetLabel( const wxString &label )
 183 {
 184     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 185
 186     wxControl::SetLabel( label );
 187 }
 188
 189 wxString wxBitmapButton::GetLabel() const
 190 {
 191     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid button") );
 192
 193     return wxControl::GetLabel();
 194 }
 195
 196 void wxBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 197 {
 198     if ( !BUTTON_CHILD(m_widget) )
 199         return;
 200
 201     wxButton::DoApplyWidgetStyle(style);
 202 }
 203
 204 void wxBitmapButton::OnSetBitmap()
 205 {
 206     wxCHECK_RET( m_widget != NULL, wxT("invalid bitmap button") );
 207
 208     InvalidateBestSize();
 209
 210     wxBitmap the_one;
 211     if (!m_isEnabled)
 212         the_one = m_bmpDisabled;
 213     else if (m_isSelected)
 214         the_one = m_bmpSelected;
 215     else if (m_hasFocus)
 216         the_one = m_bmpFocus;
 217     else
 218     {
 219         if (m_isSelected)
 220         {
 221             the_one = m_bmpSelected;
 222         }
 223         else
 224         {
 225             if (m_hasFocus)
 226                 the_one = m_bmpFocus;
 227             else
 228                 the_one = m_bmpNormal;
 229         }
 230     }
 231
 232     if (!the_one.Ok()) the_one = m_bmpNormal;
 233     if (!the_one.Ok()) return;
 234
 235     GdkBitmap *mask = (GdkBitmap *) NULL;
 236     if (the_one.GetMask()) mask = the_one.GetMask()->GetBitmap();
 237
 238     GtkWidget *child = BUTTON_CHILD(m_widget);
 239     if (child == NULL)
 240     {
 241         // initial bitmap
 242         GtkWidget *pixmap = gtk_pixmap_new(the_one.GetPixmap(), mask);
 243         gtk_widget_show(pixmap);
 244         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 245     }
 246     else
 247     {   // subsequent bitmaps
 248         GtkPixmap *g_pixmap = GTK_PIXMAP(child);
 249         gtk_pixmap_set(g_pixmap, the_one.GetPixmap(), mask);
 250     }
 251 }
 252
 253 wxSize wxBitmapButton::DoGetBestSize() const
 254 {
 255     wxSize best;
 256
 257     if (m_bmpNormal.Ok())
 258     {
 259         int border = HasFlag(wxNO_BORDER) ? 4 : 10;
 260         best.x = m_bmpNormal.GetWidth()+border;
 261         best.y = m_bmpNormal.GetHeight()+border;
 262     }
 263     CacheBestSize(best);
 264     return best;
 265 }
 266
 267 bool wxBitmapButton::Enable( bool enable )
 268 {
 269     if ( !wxWindow::Enable(enable) )
 270         return FALSE;
 271
 272     OnSetBitmap();
 273
 274     return TRUE;
 275 }
 276
 277 void wxBitmapButton::HasFocus()
 278 {
 279     m_hasFocus = TRUE;
 280     OnSetBitmap();
 281 }
 282
 283 void wxBitmapButton::NotFocus()
 284 {
 285     m_hasFocus = FALSE;
 286     OnSetBitmap();
 287 }
 288
 289 void wxBitmapButton::StartSelect()
 290 {
 291     m_isSelected = TRUE;
 292     OnSetBitmap();
 293 }
 294
 295 void wxBitmapButton::EndSelect()
 296 {
 297     m_isSelected = FALSE;
 298     OnSetBitmap();
 299 }
 300
 301 #endif // wxUSE_BMPBUTTON
 302