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 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/defs.h"
  14
  15 #if wxUSE_BMPBUTTON
  16
  17 #include "wx/bmpbuttn.h"
  18
  19 #include "wx/gtk/private.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 extern "C" {
  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 //-----------------------------------------------------------------------------
  60 // "enter"
  61 //-----------------------------------------------------------------------------
  62
  63 extern "C" {
  64 static void gtk_bmpbutton_enter_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  65 {
  66     if (!button->m_hasVMT) return;
  67     if (g_blockEventsOnDrag) return;
  68
  69     button->HasFocus();
  70 }
  71 }
  72
  73 //-----------------------------------------------------------------------------
  74 // "leave"
  75 //-----------------------------------------------------------------------------
  76
  77 extern "C" {
  78 static void gtk_bmpbutton_leave_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  79 {
  80     if (!button->m_hasVMT) return;
  81     if (g_blockEventsOnDrag) return;
  82
  83     button->NotFocus();
  84 }
  85 }
  86
  87 //-----------------------------------------------------------------------------
  88 // "pressed"
  89 //-----------------------------------------------------------------------------
  90
  91 extern "C" {
  92 static void gtk_bmpbutton_press_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  93 {
  94     if (!button->m_hasVMT) return;
  95     if (g_blockEventsOnDrag) return;
  96
  97     button->StartSelect();
  98 }
  99 }
 100
 101 //-----------------------------------------------------------------------------
 102 // "released"
 103 //-----------------------------------------------------------------------------
 104
 105 extern "C" {
 106 static void gtk_bmpbutton_release_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
 107 {
 108     if (!button->m_hasVMT) return;
 109     if (g_blockEventsOnDrag) return;
 110
 111     button->EndSelect();
 112 }
 113 }
 114
 115 //-----------------------------------------------------------------------------
 116 // wxBitmapButton
 117 //-----------------------------------------------------------------------------
 118
 119 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton,wxButton)
 120
 121 void wxBitmapButton::Init()
 122 {
 123     m_hasFocus =
 124     m_isSelected = false;
 125 }
 126
 127 bool wxBitmapButton::Create( wxWindow *parent,
 128                              wxWindowID id,
 129                              const wxBitmap& bitmap,
 130                              const wxPoint& pos,
 131                              const wxSize& size,
 132                              long style,
 133                              const wxValidator& validator,
 134                              const wxString &name )
 135 {
 136     m_needParent = true;
 137     m_acceptsFocus = true;
 138
 139     if (!PreCreation( parent, pos, size ) ||
 140         !CreateBase( parent, id, pos, size, style, validator, name ))
 141     {
 142         wxFAIL_MSG( wxT("wxBitmapButton creation failed") );
 143         return false;
 144     }
 145
 146     m_bmpNormal = bitmap;
 147
 148     m_widget = gtk_button_new();
 149
 150     if (style & wxNO_BORDER)
 151        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 152
 153     if (m_bmpNormal.Ok())
 154     {
 155         OnSetBitmap();
 156     }
 157
 158     g_signal_connect_after (m_widget, "clicked",
 159                             G_CALLBACK (gtk_bmpbutton_clicked_callback),
 160                             this);
 161
 162     g_signal_connect (m_widget, "enter",
 163                       G_CALLBACK (gtk_bmpbutton_enter_callback), this);
 164     g_signal_connect (m_widget, "leave",
 165                       G_CALLBACK (gtk_bmpbutton_leave_callback), this);
 166     g_signal_connect (m_widget, "pressed",
 167                       G_CALLBACK (gtk_bmpbutton_press_callback), this);
 168     g_signal_connect (m_widget, "released",
 169                       G_CALLBACK (gtk_bmpbutton_release_callback), this);
 170
 171     m_parent->DoAddChild( this );
 172
 173     PostCreation(size);
 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 void wxBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 194 {
 195     if ( !BUTTON_CHILD(m_widget) )
 196         return;
 197
 198     wxButton::DoApplyWidgetStyle(style);
 199 }
 200
 201 void wxBitmapButton::OnSetBitmap()
 202 {
 203     wxCHECK_RET( m_widget != NULL, wxT("invalid bitmap button") );
 204
 205     InvalidateBestSize();
 206
 207     wxBitmap the_one;
 208     if (!m_isEnabled)
 209         the_one = m_bmpDisabled;
 210     else if (m_isSelected)
 211         the_one = m_bmpSelected;
 212     else if (m_hasFocus)
 213         the_one = m_bmpFocus;
 214     else
 215         the_one = m_bmpNormal;
 216
 217     if (!the_one.Ok()) the_one = m_bmpNormal;
 218     if (!the_one.Ok()) return;
 219
 220     GdkBitmap *mask = (GdkBitmap *) NULL;
 221     if (the_one.GetMask()) mask = the_one.GetMask()->GetBitmap();
 222
 223     GtkWidget *child = BUTTON_CHILD(m_widget);
 224     if (child == NULL)
 225     {
 226         // initial bitmap
 227         GtkWidget *pixmap;
 228
 229         if (the_one.HasPixbuf())
 230             pixmap = gtk_image_new_from_pixbuf(the_one.GetPixbuf());
 231         else
 232             pixmap = gtk_image_new_from_pixmap(the_one.GetPixmap(), mask);
 233
 234         gtk_widget_show(pixmap);
 235         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 236     }
 237     else
 238     {   // subsequent bitmaps
 239         GtkImage *pixmap = GTK_IMAGE(child);
 240         if (the_one.HasPixbuf())
 241             gtk_image_set_from_pixbuf(pixmap, the_one.GetPixbuf());
 242         else
 243             gtk_image_set_from_pixmap(pixmap, the_one.GetPixmap(), mask);
 244     }
 245 }
 246
 247 wxSize wxBitmapButton::DoGetBestSize() const
 248 {
 249     return wxControl::DoGetBestSize();
 250 }
 251
 252 bool wxBitmapButton::Enable( bool enable )
 253 {
 254     if ( !wxWindow::Enable(enable) )
 255         return false;
 256
 257     OnSetBitmap();
 258
 259     return true;
 260 }
 261
 262 void wxBitmapButton::HasFocus()
 263 {
 264     m_hasFocus = true;
 265     OnSetBitmap();
 266 }
 267
 268 void wxBitmapButton::NotFocus()
 269 {
 270     m_hasFocus = false;
 271     OnSetBitmap();
 272 }
 273
 274 void wxBitmapButton::StartSelect()
 275 {
 276     m_isSelected = true;
 277     OnSetBitmap();
 278 }
 279
 280 void wxBitmapButton::EndSelect()
 281 {
 282     m_isSelected = false;
 283     OnSetBitmap();
 284 }
 285
 286 #endif // wxUSE_BMPBUTTON
 287