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 wxBitmapButtonBase::wxBitmapButtonBase()
 116                                       : m_bmpNormal(),
 117                                         m_bmpSelected(),
 118                                         m_bmpFocus(),
 119                                         m_bmpDisabled(),
 120                                         m_marginX(0),
 121                                         m_marginY(0)
 122 {
 123 }
 124
 125 void wxBitmapButton::Init()
 126 {
 127     m_hasFocus =
 128     m_isSelected = FALSE;
 129 }
 130
 131 bool wxBitmapButton::Create( wxWindow *parent,
 132                              wxWindowID id,
 133                              const wxBitmap& bitmap,
 134                              const wxPoint& pos,
 135                              const wxSize& size,
 136                              long style,
 137                              const wxValidator& validator,
 138                              const wxString &name )
 139 {
 140     m_needParent = TRUE;
 141     m_acceptsFocus = TRUE;
 142
 143     if (!PreCreation( parent, pos, size ) ||
 144         !CreateBase( parent, id, pos, size, style, validator, name ))
 145     {
 146         wxFAIL_MSG( wxT("wxBitmapButton creation failed") );
 147         return FALSE;
 148     }
 149
 150     m_bmpNormal   =
 151     m_bmpDisabled =
 152     m_bmpFocus    =
 153     m_bmpSelected = bitmap;
 154
 155     m_widget = gtk_button_new();
 156
 157 #if (GTK_MINOR_VERSION > 0)
 158     if (style & wxNO_BORDER)
 159        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 160 #endif
 161
 162     if (m_bmpNormal.Ok())
 163     {
 164         wxSize newSize = size;
 165         int border = (style & wxNO_BORDER) ? 4 : 10;
 166         if (newSize.x == -1)
 167             newSize.x = m_bmpNormal.GetWidth()+border;
 168         if (newSize.y == -1)
 169             newSize.y = m_bmpNormal.GetHeight()+border;
 170         SetSize( newSize.x, newSize.y );
 171         OnSetBitmap();
 172     }
 173
 174     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 175       GTK_SIGNAL_FUNC(gtk_bmpbutton_clicked_callback), (gpointer*)this );
 176
 177     gtk_signal_connect( GTK_OBJECT(m_widget), "enter",
 178       GTK_SIGNAL_FUNC(gtk_bmpbutton_enter_callback), (gpointer*)this );
 179     gtk_signal_connect( GTK_OBJECT(m_widget), "leave",
 180       GTK_SIGNAL_FUNC(gtk_bmpbutton_leave_callback), (gpointer*)this );
 181     gtk_signal_connect( GTK_OBJECT(m_widget), "pressed",
 182       GTK_SIGNAL_FUNC(gtk_bmpbutton_press_callback), (gpointer*)this );
 183     gtk_signal_connect( GTK_OBJECT(m_widget), "released",
 184       GTK_SIGNAL_FUNC(gtk_bmpbutton_release_callback), (gpointer*)this );
 185
 186     m_parent->DoAddChild( this );
 187
 188     PostCreation();
 189     InheritAttributes();
 190
 191     Show( TRUE );
 192
 193     return TRUE;
 194 }
 195
 196 void wxBitmapButton::SetDefault()
 197 {
 198     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 199     gtk_widget_grab_default( m_widget );
 200
 201     SetSize( m_x, m_y, m_width, m_height );
 202 }
 203
 204 void wxBitmapButton::SetLabel( const wxString &label )
 205 {
 206     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 207
 208     wxControl::SetLabel( label );
 209 }
 210
 211 wxString wxBitmapButton::GetLabel() const
 212 {
 213     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid button") );
 214
 215     return wxControl::GetLabel();
 216 }
 217
 218 void wxBitmapButton::ApplyWidgetStyle()
 219 {
 220     if ( !BUTTON_CHILD(m_widget) )
 221         return;
 222
 223     wxButton::ApplyWidgetStyle();
 224 }
 225
 226 void wxBitmapButton::OnSetBitmap()
 227 {
 228     wxCHECK_RET( m_widget != NULL, wxT("invalid bitmap button") );
 229
 230     wxBitmap the_one;
 231     if (!m_isEnabled)
 232         the_one = m_bmpDisabled;
 233     else if (m_isSelected)
 234         the_one = m_bmpSelected;
 235     else if (m_hasFocus)
 236         the_one = m_bmpFocus;
 237     else
 238     {
 239         if (m_isSelected)
 240         {
 241             the_one = m_bmpSelected;
 242         }
 243         else
 244         {
 245             if (m_hasFocus)
 246                 the_one = m_bmpFocus;
 247             else
 248                 the_one = m_bmpNormal;
 249         }
 250     }
 251
 252     if (!the_one.Ok()) the_one = m_bmpNormal;
 253     if (!the_one.Ok()) return;
 254
 255     GdkBitmap *mask = (GdkBitmap *) NULL;
 256     if (the_one.GetMask()) mask = the_one.GetMask()->GetBitmap();
 257
 258     GtkWidget *child = BUTTON_CHILD(m_widget);
 259     if (child == NULL)
 260     {
 261         // initial bitmap
 262         GtkWidget *pixmap = gtk_pixmap_new(the_one.GetPixmap(), mask);
 263         gtk_widget_show(pixmap);
 264         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 265     }
 266     else
 267     {   // subsequent bitmaps
 268         GtkPixmap *g_pixmap = GTK_PIXMAP(child);
 269         gtk_pixmap_set(g_pixmap, the_one.GetPixmap(), mask);
 270     }
 271 }
 272
 273 bool wxBitmapButton::Enable( bool enable )
 274 {
 275     if ( !wxWindow::Enable(enable) )
 276         return FALSE;
 277
 278     OnSetBitmap();
 279
 280     return TRUE;
 281 }
 282
 283 void wxBitmapButton::HasFocus()
 284 {
 285     m_hasFocus = TRUE;
 286     OnSetBitmap();
 287 }
 288
 289 void wxBitmapButton::NotFocus()
 290 {
 291     m_hasFocus = FALSE;
 292     OnSetBitmap();
 293 }
 294
 295 void wxBitmapButton::StartSelect()
 296 {
 297     m_isSelected = TRUE;
 298     OnSetBitmap();
 299 }
 300
 301 void wxBitmapButton::EndSelect()
 302 {
 303     m_isSelected = FALSE;
 304     OnSetBitmap();
 305 }
 306
 307 #endif // wxUSE_BMPBUTTON
 308