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 void wxBitmapButton::Init()
 113 {
 114     m_hasFocus =
 115     m_isSelected = FALSE;
 116 }
 117
 118 bool wxBitmapButton::Create( wxWindow *parent,
 119                              wxWindowID id,
 120                              const wxBitmap& bitmap,
 121                              const wxPoint& pos,
 122                              const wxSize& size,
 123                              long style,
 124                              const wxValidator& validator,
 125                              const wxString &name )
 126 {
 127     m_needParent = TRUE;
 128     m_acceptsFocus = TRUE;
 129
 130     if (!PreCreation( parent, pos, size ) ||
 131         !CreateBase( parent, id, pos, size, style, validator, name ))
 132     {
 133         wxFAIL_MSG( wxT("wxBitmapButton creation failed") );
 134         return FALSE;
 135     }
 136
 137     m_bmpNormal   =
 138     m_bmpDisabled =
 139     m_bmpFocus    =
 140     m_bmpSelected = bitmap;
 141
 142     m_widget = gtk_button_new();
 143
 144 #if (GTK_MINOR_VERSION > 0)
 145     if (style & wxNO_BORDER)
 146        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 147 #endif
 148
 149     if (m_bmpNormal.Ok())
 150     {
 151         wxSize newSize = size;
 152         int border = (style & wxNO_BORDER) ? 4 : 10;
 153         if (newSize.x == -1)
 154             newSize.x = m_bmpNormal.GetWidth()+border;
 155         if (newSize.y == -1)
 156             newSize.y = m_bmpNormal.GetHeight()+border;
 157         SetSize( newSize.x, newSize.y );
 158         OnSetBitmap();
 159     }
 160
 161     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 162       GTK_SIGNAL_FUNC(gtk_bmpbutton_clicked_callback), (gpointer*)this );
 163
 164     gtk_signal_connect( GTK_OBJECT(m_widget), "enter",
 165       GTK_SIGNAL_FUNC(gtk_bmpbutton_enter_callback), (gpointer*)this );
 166     gtk_signal_connect( GTK_OBJECT(m_widget), "leave",
 167       GTK_SIGNAL_FUNC(gtk_bmpbutton_leave_callback), (gpointer*)this );
 168     gtk_signal_connect( GTK_OBJECT(m_widget), "pressed",
 169       GTK_SIGNAL_FUNC(gtk_bmpbutton_press_callback), (gpointer*)this );
 170     gtk_signal_connect( GTK_OBJECT(m_widget), "released",
 171       GTK_SIGNAL_FUNC(gtk_bmpbutton_release_callback), (gpointer*)this );
 172
 173     m_parent->DoAddChild( this );
 174
 175     PostCreation();
 176
 177     SetBackgroundColour( parent->GetBackgroundColour() );
 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 bool wxBitmapButton::Enable( bool enable )
 262 {
 263     if ( !wxWindow::Enable(enable) )
 264         return FALSE;
 265
 266     OnSetBitmap();
 267
 268     return TRUE;
 269 }
 270
 271 void wxBitmapButton::HasFocus()
 272 {
 273     m_hasFocus = TRUE;
 274     OnSetBitmap();
 275 }
 276
 277 void wxBitmapButton::NotFocus()
 278 {
 279     m_hasFocus = FALSE;
 280     OnSetBitmap();
 281 }
 282
 283 void wxBitmapButton::StartSelect()
 284 {
 285     m_isSelected = TRUE;
 286     OnSetBitmap();
 287 }
 288
 289 void wxBitmapButton::EndSelect()
 290 {
 291     m_isSelected = FALSE;
 292     OnSetBitmap();
 293 }
 294
 295 #endif // wxUSE_BMPBUTTON
 296