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 <gdk/gdk.h>
  21 #include <gtk/gtk.h>
  22
  23 //-----------------------------------------------------------------------------
  24 // classes
  25 //-----------------------------------------------------------------------------
  26
  27 class wxBitmapButton;
  28
  29 //-----------------------------------------------------------------------------
  30 // idle system
  31 //-----------------------------------------------------------------------------
  32
  33 extern void wxapp_install_idle_handler();
  34 extern bool g_isIdle;
  35
  36 //-----------------------------------------------------------------------------
  37 // data
  38 //-----------------------------------------------------------------------------
  39
  40 extern bool   g_blockEventsOnDrag;
  41
  42 //-----------------------------------------------------------------------------
  43 // "clicked"
  44 //-----------------------------------------------------------------------------
  45
  46 static void gtk_bmpbutton_clicked_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  47 {
  48     if (g_isIdle)
  49         wxapp_install_idle_handler();
  50
  51     if (!button->m_hasVMT) return;
  52     if (g_blockEventsOnDrag) return;
  53
  54     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  55     event.SetEventObject(button);
  56     button->GetEventHandler()->ProcessEvent(event);
  57 }
  58
  59 //-----------------------------------------------------------------------------
  60 // "enter"
  61 //-----------------------------------------------------------------------------
  62
  63 static void gtk_bmpbutton_enter_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  64 {
  65     if (!button->m_hasVMT) return;
  66     if (g_blockEventsOnDrag) return;
  67
  68     button->HasFocus();
  69 }
  70
  71 //-----------------------------------------------------------------------------
  72 // "leave"
  73 //-----------------------------------------------------------------------------
  74
  75 static void gtk_bmpbutton_leave_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  76 {
  77     if (!button->m_hasVMT) return;
  78     if (g_blockEventsOnDrag) return;
  79
  80     button->NotFocus();
  81 }
  82
  83 //-----------------------------------------------------------------------------
  84 // "pressed"
  85 //-----------------------------------------------------------------------------
  86
  87 static void gtk_bmpbutton_press_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  88 {
  89     if (!button->m_hasVMT) return;
  90     if (g_blockEventsOnDrag) return;
  91
  92     button->StartSelect();
  93 }
  94
  95 //-----------------------------------------------------------------------------
  96 // "released"
  97 //-----------------------------------------------------------------------------
  98
  99 static void gtk_bmpbutton_release_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
 100 {
 101     if (!button->m_hasVMT) return;
 102     if (g_blockEventsOnDrag) return;
 103
 104     button->EndSelect();
 105 }
 106
 107 //-----------------------------------------------------------------------------
 108 // wxBitmapButton
 109 //-----------------------------------------------------------------------------
 110
 111 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton,wxButton)
 112
 113 wxBitmapButton::wxBitmapButton()
 114 {
 115 }
 116
 117 bool wxBitmapButton::Create( wxWindow *parent, wxWindowID id, const wxBitmap &bitmap,
 118                              const wxPoint &pos, const wxSize &size,
 119                              long style, const wxValidator& validator, const wxString &name )
 120 {
 121     m_needParent = TRUE;
 122     m_acceptsFocus = TRUE;
 123
 124     if (!PreCreation( parent, pos, size ) ||
 125         !CreateBase( parent, id, pos, size, style, validator, name ))
 126     {
 127         wxFAIL_MSG( wxT("wxBitmapButton creation failed") );
 128         return FALSE;
 129     }
 130
 131     m_bmpNormal   =
 132     m_bmpDisabled =
 133     m_bmpFocus    =
 134     m_bmpSelected = bitmap;
 135
 136     m_widget = gtk_button_new();
 137
 138 #if (GTK_MINOR_VERSION > 0)
 139     if (style & wxNO_BORDER)
 140        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 141 #endif
 142
 143     if (m_bmpNormal.Ok())
 144     {
 145         wxSize newSize = size;
 146         int border = (style & wxNO_BORDER) ? 4 : 10;
 147         if (newSize.x == -1)
 148             newSize.x = m_bmpNormal.GetWidth()+border;
 149         if (newSize.y == -1)
 150             newSize.y = m_bmpNormal.GetHeight()+border;
 151         SetSize( newSize.x, newSize.y );
 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();
 170
 171     SetBackgroundColour( parent->GetBackgroundColour() );
 172
 173     Show( TRUE );
 174
 175     return TRUE;
 176 }
 177
 178 void wxBitmapButton::SetDefault()
 179 {
 180     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 181     gtk_widget_grab_default( m_widget );
 182
 183     SetSize( m_x, m_y, m_width, m_height );
 184 }
 185
 186 void wxBitmapButton::SetLabel( const wxString &label )
 187 {
 188     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 189
 190     wxControl::SetLabel( label );
 191 }
 192
 193 wxString wxBitmapButton::GetLabel() const
 194 {
 195     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid button") );
 196
 197     return wxControl::GetLabel();
 198 }
 199
 200 void wxBitmapButton::ApplyWidgetStyle()
 201 {
 202     if (GTK_BUTTON(m_widget)->child == NULL) 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     GtkButton *bin = GTK_BUTTON(m_widget);
 240     if (bin->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(bin->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