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 #ifdef __GNUG__
  11 #pragma implementation "bmpbuttn.h"
  12 #endif
  13
  14 #include "wx/defs.h"
  15
  16 #if wxUSE_BMPBUTTON
  17
  18 #include "wx/bmpbuttn.h"
  19
  20 #include "wx/gtk/private.h"
  21
  22 //-----------------------------------------------------------------------------
  23 // classes
  24 //-----------------------------------------------------------------------------
  25
  26 class wxBitmapButton;
  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_bmpbutton_clicked_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *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 // "enter"
  60 //-----------------------------------------------------------------------------
  61
  62 static void gtk_bmpbutton_enter_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  63 {
  64     if (!button->m_hasVMT) return;
  65     if (g_blockEventsOnDrag) return;
  66
  67     button->HasFocus();
  68 }
  69
  70 //-----------------------------------------------------------------------------
  71 // "leave"
  72 //-----------------------------------------------------------------------------
  73
  74 static void gtk_bmpbutton_leave_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  75 {
  76     if (!button->m_hasVMT) return;
  77     if (g_blockEventsOnDrag) return;
  78
  79     button->NotFocus();
  80 }
  81
  82 //-----------------------------------------------------------------------------
  83 // "pressed"
  84 //-----------------------------------------------------------------------------
  85
  86 static void gtk_bmpbutton_press_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  87 {
  88     if (!button->m_hasVMT) return;
  89     if (g_blockEventsOnDrag) return;
  90
  91     button->StartSelect();
  92 }
  93
  94 //-----------------------------------------------------------------------------
  95 // "released"
  96 //-----------------------------------------------------------------------------
  97
  98 static void gtk_bmpbutton_release_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  99 {
 100     if (!button->m_hasVMT) return;
 101     if (g_blockEventsOnDrag) return;
 102
 103     button->EndSelect();
 104 }
 105
 106 //-----------------------------------------------------------------------------
 107 // wxBitmapButton
 108 //-----------------------------------------------------------------------------
 109
 110 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton,wxButton)
 111
 112 wxBitmapButton::wxBitmapButton()
 113 {
 114 }
 115
 116 bool wxBitmapButton::Create( wxWindow *parent, wxWindowID id, const wxBitmap &bitmap,
 117                              const wxPoint &pos, const wxSize &size,
 118                              long style, const wxValidator& validator, const wxString &name )
 119 {
 120     m_needParent = TRUE;
 121     m_acceptsFocus = TRUE;
 122
 123     if (!PreCreation( parent, pos, size ) ||
 124         !CreateBase( parent, id, pos, size, style, validator, name ))
 125     {
 126         wxFAIL_MSG( wxT("wxBitmapButton creation failed") );
 127         return FALSE;
 128     }
 129
 130     m_bmpNormal   =
 131     m_bmpDisabled =
 132     m_bmpFocus    =
 133     m_bmpSelected = bitmap;
 134
 135     m_widget = gtk_button_new();
 136
 137 #if (GTK_MINOR_VERSION > 0)
 138     if (style & wxNO_BORDER)
 139        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 140 #endif
 141
 142     if (m_bmpNormal.Ok())
 143     {
 144         wxSize newSize = size;
 145         int border = (style & wxNO_BORDER) ? 4 : 10;
 146         if (newSize.x == -1)
 147             newSize.x = m_bmpNormal.GetWidth()+border;
 148         if (newSize.y == -1)
 149             newSize.y = m_bmpNormal.GetHeight()+border;
 150         SetSize( newSize.x, newSize.y );
 151         OnSetBitmap();
 152     }
 153
 154     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 155       GTK_SIGNAL_FUNC(gtk_bmpbutton_clicked_callback), (gpointer*)this );
 156
 157     gtk_signal_connect( GTK_OBJECT(m_widget), "enter",
 158       GTK_SIGNAL_FUNC(gtk_bmpbutton_enter_callback), (gpointer*)this );
 159     gtk_signal_connect( GTK_OBJECT(m_widget), "leave",
 160       GTK_SIGNAL_FUNC(gtk_bmpbutton_leave_callback), (gpointer*)this );
 161     gtk_signal_connect( GTK_OBJECT(m_widget), "pressed",
 162       GTK_SIGNAL_FUNC(gtk_bmpbutton_press_callback), (gpointer*)this );
 163     gtk_signal_connect( GTK_OBJECT(m_widget), "released",
 164       GTK_SIGNAL_FUNC(gtk_bmpbutton_release_callback), (gpointer*)this );
 165
 166     m_parent->DoAddChild( this );
 167
 168     PostCreation();
 169
 170     SetBackgroundColour( parent->GetBackgroundColour() );
 171
 172     Show( TRUE );
 173
 174     return TRUE;
 175 }
 176
 177 void wxBitmapButton::SetDefault()
 178 {
 179     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 180     gtk_widget_grab_default( m_widget );
 181
 182     SetSize( m_x, m_y, m_width, m_height );
 183 }
 184
 185 void wxBitmapButton::SetLabel( const wxString &label )
 186 {
 187     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 188
 189     wxControl::SetLabel( label );
 190 }
 191
 192 wxString wxBitmapButton::GetLabel() const
 193 {
 194     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid button") );
 195
 196     return wxControl::GetLabel();
 197 }
 198
 199 void wxBitmapButton::ApplyWidgetStyle()
 200 {
 201     if ( !BUTTON_CHILD(m_widget) )
 202         return;
 203
 204     wxButton::ApplyWidgetStyle();
 205 }
 206
 207 void wxBitmapButton::OnSetBitmap()
 208 {
 209     wxCHECK_RET( m_widget != NULL, wxT("invalid bitmap button") );
 210
 211     wxBitmap the_one;
 212     if (!m_isEnabled)
 213         the_one = m_bmpDisabled;
 214     else if (m_isSelected)
 215         the_one = m_bmpSelected;
 216     else if (m_hasFocus)
 217         the_one = m_bmpFocus;
 218     else
 219     {
 220         if (m_isSelected)
 221         {
 222             the_one = m_bmpSelected;
 223         }
 224         else
 225         {
 226             if (m_hasFocus)
 227                 the_one = m_bmpFocus;
 228             else
 229                 the_one = m_bmpNormal;
 230         }
 231     }
 232
 233     if (!the_one.Ok()) the_one = m_bmpNormal;
 234     if (!the_one.Ok()) return;
 235
 236     GdkBitmap *mask = (GdkBitmap *) NULL;
 237     if (the_one.GetMask()) mask = the_one.GetMask()->GetBitmap();
 238
 239     GtkWidget *child = BUTTON_CHILD(m_widget);
 240     if (child == NULL)
 241     {
 242         // initial bitmap
 243         GtkWidget *pixmap = gtk_pixmap_new(the_one.GetPixmap(), mask);
 244         gtk_widget_show(pixmap);
 245         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 246     }
 247     else
 248     {   // subsequent bitmaps
 249         GtkPixmap *g_pixmap = GTK_PIXMAP(child);
 250         gtk_pixmap_set(g_pixmap, the_one.GetPixmap(), mask);
 251     }
 252 }
 253
 254 bool wxBitmapButton::Enable( bool enable )
 255 {
 256     if ( !wxWindow::Enable(enable) )
 257         return FALSE;
 258
 259     OnSetBitmap();
 260
 261     return TRUE;
 262 }
 263
 264 void wxBitmapButton::HasFocus()
 265 {
 266     m_hasFocus = TRUE;
 267     OnSetBitmap();
 268 }
 269
 270 void wxBitmapButton::NotFocus()
 271 {
 272     m_hasFocus = FALSE;
 273     OnSetBitmap();
 274 }
 275
 276 void wxBitmapButton::StartSelect()
 277 {
 278     m_isSelected = TRUE;
 279     OnSetBitmap();
 280 }
 281
 282 void wxBitmapButton::EndSelect()
 283 {
 284     m_isSelected = FALSE;
 285     OnSetBitmap();
 286 }
 287
 288 #endif // wxUSE_BMPBUTTON
 289