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         wxSize newSize = size;
 153         wxSize bestSize = DoGetBestSize();
 154         if (newSize.x == -1)
 155             newSize.x = bestSize.x;
 156         if (newSize.y == -1)
 157             newSize.y = bestSize.y;
 158         SetSize( newSize.x, newSize.y );
 159         OnSetBitmap();
 160     }
 161
 162     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 163       GTK_SIGNAL_FUNC(gtk_bmpbutton_clicked_callback), (gpointer*)this );
 164
 165     gtk_signal_connect( GTK_OBJECT(m_widget), "enter",
 166       GTK_SIGNAL_FUNC(gtk_bmpbutton_enter_callback), (gpointer*)this );
 167     gtk_signal_connect( GTK_OBJECT(m_widget), "leave",
 168       GTK_SIGNAL_FUNC(gtk_bmpbutton_leave_callback), (gpointer*)this );
 169     gtk_signal_connect( GTK_OBJECT(m_widget), "pressed",
 170       GTK_SIGNAL_FUNC(gtk_bmpbutton_press_callback), (gpointer*)this );
 171     gtk_signal_connect( GTK_OBJECT(m_widget), "released",
 172       GTK_SIGNAL_FUNC(gtk_bmpbutton_release_callback), (gpointer*)this );
 173
 174     m_parent->DoAddChild( this );
 175
 176     PostCreation();
 177     InheritAttributes();
 178
 179     Show( TRUE );
 180
 181     return TRUE;
 182 }
 183
 184 void wxBitmapButton::SetDefault()
 185 {
 186     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
 187     gtk_widget_grab_default( m_widget );
 188
 189     SetSize( m_x, m_y, m_width, m_height );
 190 }
 191
 192 void wxBitmapButton::SetLabel( const wxString &label )
 193 {
 194     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 195
 196     wxControl::SetLabel( label );
 197 }
 198
 199 wxString wxBitmapButton::GetLabel() const
 200 {
 201     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid button") );
 202
 203     return wxControl::GetLabel();
 204 }
 205
 206 void wxBitmapButton::ApplyWidgetStyle()
 207 {
 208     if ( !BUTTON_CHILD(m_widget) )
 209         return;
 210
 211     wxButton::ApplyWidgetStyle();
 212 }
 213
 214 void wxBitmapButton::OnSetBitmap()
 215 {
 216     wxCHECK_RET( m_widget != NULL, wxT("invalid bitmap button") );
 217
 218     wxBitmap the_one;
 219     if (!m_isEnabled)
 220         the_one = m_bmpDisabled;
 221     else if (m_isSelected)
 222         the_one = m_bmpSelected;
 223     else if (m_hasFocus)
 224         the_one = m_bmpFocus;
 225     else
 226     {
 227         if (m_isSelected)
 228         {
 229             the_one = m_bmpSelected;
 230         }
 231         else
 232         {
 233             if (m_hasFocus)
 234                 the_one = m_bmpFocus;
 235             else
 236                 the_one = m_bmpNormal;
 237         }
 238     }
 239
 240     if (!the_one.Ok()) the_one = m_bmpNormal;
 241     if (!the_one.Ok()) return;
 242
 243     GdkBitmap *mask = (GdkBitmap *) NULL;
 244     if (the_one.GetMask()) mask = the_one.GetMask()->GetBitmap();
 245
 246     GtkWidget *child = BUTTON_CHILD(m_widget);
 247     if (child == NULL)
 248     {
 249         // initial bitmap
 250         GtkWidget *pixmap = gtk_pixmap_new(the_one.GetPixmap(), mask);
 251         gtk_widget_show(pixmap);
 252         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 253     }
 254     else
 255     {   // subsequent bitmaps
 256         GtkPixmap *g_pixmap = GTK_PIXMAP(child);
 257         gtk_pixmap_set(g_pixmap, the_one.GetPixmap(), mask);
 258     }
 259 }
 260
 261 wxSize wxBitmapButton::DoGetBestSize() const
 262 {
 263     wxSize best;
 264
 265     if (m_bmpNormal.Ok())
 266     {
 267         int border = HasFlag(wxNO_BORDER) ? 4 : 10;
 268         best.x = m_bmpNormal.GetWidth()+border;
 269         best.y = m_bmpNormal.GetHeight()+border;
 270     }
 271     return best;
 272 }
 273
 274 bool wxBitmapButton::Enable( bool enable )
 275 {
 276     if ( !wxWindow::Enable(enable) )
 277         return FALSE;
 278
 279     OnSetBitmap();
 280
 281     return TRUE;
 282 }
 283
 284 void wxBitmapButton::HasFocus()
 285 {
 286     m_hasFocus = TRUE;
 287     OnSetBitmap();
 288 }
 289
 290 void wxBitmapButton::NotFocus()
 291 {
 292     m_hasFocus = FALSE;
 293     OnSetBitmap();
 294 }
 295
 296 void wxBitmapButton::StartSelect()
 297 {
 298     m_isSelected = TRUE;
 299     OnSetBitmap();
 300 }
 301
 302 void wxBitmapButton::EndSelect()
 303 {
 304     m_isSelected = FALSE;
 305     OnSetBitmap();
 306 }
 307
 308 #endif // wxUSE_BMPBUTTON
 309