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/bmpbuttn.h"
  15
  16 #if wxUSE_BMPBUTTON
  17
  18 #include <gdk/gdk.h>
  19 #include <gtk/gtk.h>
  20
  21 //-----------------------------------------------------------------------------
  22 // classes
  23 //-----------------------------------------------------------------------------
  24
  25 class wxBitmapButton;
  26
  27 //-----------------------------------------------------------------------------
  28 // idle system
  29 //-----------------------------------------------------------------------------
  30
  31 extern void wxapp_install_idle_handler();
  32 extern bool g_isIdle;
  33
  34 //-----------------------------------------------------------------------------
  35 // data
  36 //-----------------------------------------------------------------------------
  37
  38 extern bool   g_blockEventsOnDrag;
  39
  40 //-----------------------------------------------------------------------------
  41 // "clicked"
  42 //-----------------------------------------------------------------------------
  43
  44 static void gtk_bmpbutton_clicked_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  45 {
  46     if (g_isIdle)
  47         wxapp_install_idle_handler();
  48
  49     if (!button->m_hasVMT) return;
  50     if (g_blockEventsOnDrag) return;
  51
  52     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  53     event.SetEventObject(button);
  54     button->GetEventHandler()->ProcessEvent(event);
  55 }
  56
  57 //-----------------------------------------------------------------------------
  58 // "enter"
  59 //-----------------------------------------------------------------------------
  60
  61 static void gtk_bmpbutton_enter_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  62 {
  63     if (!button->m_hasVMT) return;
  64     if (g_blockEventsOnDrag) return;
  65
  66     button->HasFocus();
  67 }
  68
  69 //-----------------------------------------------------------------------------
  70 // "leave"
  71 //-----------------------------------------------------------------------------
  72
  73 static void gtk_bmpbutton_leave_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  74 {
  75     if (!button->m_hasVMT) return;
  76     if (g_blockEventsOnDrag) return;
  77
  78     button->NotFocus();
  79 }
  80
  81 //-----------------------------------------------------------------------------
  82 // "pressed"
  83 //-----------------------------------------------------------------------------
  84
  85 static void gtk_bmpbutton_press_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  86 {
  87     if (!button->m_hasVMT) return;
  88     if (g_blockEventsOnDrag) return;
  89
  90     button->StartSelect();
  91 }
  92
  93 //-----------------------------------------------------------------------------
  94 // "released"
  95 //-----------------------------------------------------------------------------
  96
  97 static void gtk_bmpbutton_release_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  98 {
  99     if (!button->m_hasVMT) return;
 100     if (g_blockEventsOnDrag) return;
 101
 102     button->EndSelect();
 103 }
 104
 105 //-----------------------------------------------------------------------------
 106 // wxBitmapButton
 107 //-----------------------------------------------------------------------------
 108
 109 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton,wxButton)
 110
 111 wxBitmapButton::wxBitmapButton()
 112 {
 113 }
 114
 115 bool wxBitmapButton::Create( wxWindow *parent, wxWindowID id, const wxBitmap &bitmap,
 116                              const wxPoint &pos, const wxSize &size,
 117                              long style, const wxValidator& validator, const wxString &name )
 118 {
 119     m_needParent = TRUE;
 120     m_acceptsFocus = TRUE;
 121
 122     m_marginX =
 123     m_marginY = 0;
 124
 125     if (!PreCreation( parent, pos, size ) ||
 126         !CreateBase( parent, id, pos, size, style, validator, name ))
 127     {
 128         wxFAIL_MSG( wxT("wxBitmapButton creation failed") );
 129         return FALSE;
 130     }
 131
 132     m_bitmap   = bitmap;
 133     m_disabled = bitmap;
 134     m_focus    = bitmap;
 135     m_selected = bitmap;
 136
 137     m_widget = gtk_button_new();
 138
 139 #if (GTK_MINOR_VERSION > 0)
 140     if (style & wxNO_BORDER)
 141        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 142 #endif
 143
 144     if (m_bitmap.Ok())
 145     {
 146         wxSize newSize = size;
 147         int border = (style & wxNO_BORDER) ? 4 : 10;
 148         if (newSize.x == -1) newSize.x = m_bitmap.GetWidth()+border;
 149         if (newSize.y == -1) newSize.y = m_bitmap.GetHeight()+border;
 150         SetSize( newSize.x, newSize.y );
 151         SetBitmap();
 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 (GTK_BUTTON(m_widget)->child == NULL) return;
 202
 203     wxButton::ApplyWidgetStyle();
 204 }
 205
 206 void wxBitmapButton::SetBitmap()
 207 {
 208     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 209
 210     wxBitmap the_one;
 211     if (!m_isEnabled)
 212         the_one = m_disabled;
 213     else if (m_isSelected)
 214         the_one = m_selected;
 215     else if (m_hasFocus)
 216         the_one = m_focus;
 217     else
 218         the_one = m_bitmap;
 219
 220     if (!the_one.Ok()) the_one = m_bitmap;
 221     if (!the_one.Ok()) return;
 222
 223     GdkBitmap *mask = (GdkBitmap *) NULL;
 224     if (the_one.GetMask()) mask = the_one.GetMask()->GetBitmap();
 225
 226     GtkButton *bin = GTK_BUTTON(m_widget);
 227     if (bin->child == NULL)
 228     {          // initial bitmap
 229         GtkWidget *pixmap = gtk_pixmap_new(the_one.GetPixmap(), mask);
 230         gtk_widget_show(pixmap);
 231         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 232     }
 233     else
 234     {   // subsequent bitmaps
 235         GtkPixmap *g_pixmap = GTK_PIXMAP(bin->child);
 236         gtk_pixmap_set(g_pixmap, the_one.GetPixmap(), mask);
 237     }
 238 }
 239
 240 void wxBitmapButton::SetBitmapDisabled( const wxBitmap& bitmap )
 241 {
 242     if (!bitmap.Ok()) return;
 243     m_disabled = bitmap;
 244
 245     SetBitmap();
 246 }
 247
 248 void wxBitmapButton::SetBitmapFocus( const wxBitmap& bitmap )
 249 {
 250     if (!bitmap.Ok()) return;
 251     m_focus = bitmap;
 252
 253     SetBitmap();
 254 }
 255
 256 void wxBitmapButton::SetBitmapLabel( const wxBitmap& bitmap )
 257 {
 258     if (!bitmap.Ok()) return;
 259     m_bitmap = bitmap;
 260
 261     SetBitmap();
 262 }
 263
 264 void wxBitmapButton::SetBitmapSelected( const wxBitmap& bitmap )
 265 {
 266     if (!bitmap.Ok()) return;
 267     m_selected = bitmap;
 268
 269     SetBitmap();
 270 }
 271
 272 bool wxBitmapButton::Enable( bool enable )
 273 {
 274     if ( !wxWindow::Enable(enable) )
 275         return FALSE;
 276
 277     SetBitmap();
 278
 279     return TRUE;
 280 }
 281
 282 void wxBitmapButton::HasFocus()
 283 {
 284     m_hasFocus = TRUE;
 285     SetBitmap();
 286 }
 287
 288 void wxBitmapButton::NotFocus()
 289 {
 290     m_hasFocus = FALSE;
 291     SetBitmap();
 292 }
 293
 294 void wxBitmapButton::StartSelect()
 295 {
 296     m_isSelected = TRUE;
 297     SetBitmap();
 298 }
 299
 300 void wxBitmapButton::EndSelect()
 301 {
 302     m_isSelected = FALSE;
 303     SetBitmap();
 304 }
 305
 306 #endif // wxUSE_BMPBUTTON
 307