src/gtk/bmpbuttn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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 #if wxUSE_BMPBUTTON
  14
  15 #include "wx/bmpbuttn.h"
  16
  17 #include "wx/gtk/private.h"
  18
  19 //-----------------------------------------------------------------------------
  20 // classes
  21 //-----------------------------------------------------------------------------
  22
  23 class wxBitmapButton;
  24
  25 //-----------------------------------------------------------------------------
  26 // data
  27 //-----------------------------------------------------------------------------
  28
  29 extern bool   g_blockEventsOnDrag;
  30
  31 //-----------------------------------------------------------------------------
  32 // "clicked"
  33 //-----------------------------------------------------------------------------
  34
  35 extern "C" {
  36 static void gtk_bmpbutton_clicked_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  37 {
  38     if (g_isIdle)
  39         wxapp_install_idle_handler();
  40
  41     if (!button->m_hasVMT) return;
  42     if (g_blockEventsOnDrag) return;
  43
  44     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  45     event.SetEventObject(button);
  46     button->GetEventHandler()->ProcessEvent(event);
  47 }
  48 }
  49
  50 //-----------------------------------------------------------------------------
  51 // "enter"
  52 //-----------------------------------------------------------------------------
  53
  54 extern "C" {
  55 static void gtk_bmpbutton_enter_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  56 {
  57     if (!button->m_hasVMT) return;
  58     if (g_blockEventsOnDrag) return;
  59
  60     button->HasFocus();
  61 }
  62 }
  63
  64 //-----------------------------------------------------------------------------
  65 // "leave"
  66 //-----------------------------------------------------------------------------
  67
  68 extern "C" {
  69 static void gtk_bmpbutton_leave_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  70 {
  71     if (!button->m_hasVMT) return;
  72     if (g_blockEventsOnDrag) return;
  73
  74     button->NotFocus();
  75 }
  76 }
  77
  78 //-----------------------------------------------------------------------------
  79 // "pressed"
  80 //-----------------------------------------------------------------------------
  81
  82 extern "C" {
  83 static void gtk_bmpbutton_press_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  84 {
  85     if (!button->m_hasVMT) return;
  86     if (g_blockEventsOnDrag) return;
  87
  88     button->StartSelect();
  89 }
  90 }
  91
  92 //-----------------------------------------------------------------------------
  93 // "released"
  94 //-----------------------------------------------------------------------------
  95
  96 extern "C" {
  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 //-----------------------------------------------------------------------------
 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
 129     if (!PreCreation( parent, pos, size ) ||
 130         !CreateBase( parent, id, pos, size, style, validator, name ))
 131     {
 132         wxFAIL_MSG( wxT("wxBitmapButton creation failed") );
 133         return false;
 134     }
 135
 136     m_bmpNormal = bitmap;
 137
 138     m_widget = gtk_button_new();
 139
 140     if (style & wxNO_BORDER)
 141        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 142
 143     if (m_bmpNormal.Ok())
 144     {
 145         OnSetBitmap();
 146     }
 147
 148     g_signal_connect_after (m_widget, "clicked",
 149                             G_CALLBACK (gtk_bmpbutton_clicked_callback),
 150                             this);
 151
 152     g_signal_connect (m_widget, "enter",
 153                       G_CALLBACK (gtk_bmpbutton_enter_callback), this);
 154     g_signal_connect (m_widget, "leave",
 155                       G_CALLBACK (gtk_bmpbutton_leave_callback), this);
 156     g_signal_connect (m_widget, "pressed",
 157                       G_CALLBACK (gtk_bmpbutton_press_callback), this);
 158     g_signal_connect (m_widget, "released",
 159                       G_CALLBACK (gtk_bmpbutton_release_callback), this);
 160
 161     m_parent->DoAddChild( this );
 162
 163     PostCreation(size);
 164
 165     return true;
 166 }
 167
 168 void wxBitmapButton::SetLabel( const wxString &label )
 169 {
 170     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 171
 172     wxControl::SetLabel( label );
 173 }
 174
 175 void wxBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 176 {
 177     if (!GTK_BIN(m_widget)->child)
 178         return;
 179
 180     wxButton::DoApplyWidgetStyle(style);
 181 }
 182
 183 void wxBitmapButton::OnSetBitmap()
 184 {
 185     wxCHECK_RET( m_widget != NULL, wxT("invalid bitmap button") );
 186
 187     InvalidateBestSize();
 188
 189     wxBitmap the_one;
 190     if (!IsThisEnabled())
 191         the_one = m_bmpDisabled;
 192     else if (m_isSelected)
 193         the_one = m_bmpSelected;
 194     else if (m_hasFocus)
 195         the_one = m_bmpFocus;
 196     else
 197         the_one = m_bmpNormal;
 198
 199     if (!the_one.Ok()) the_one = m_bmpNormal;
 200     if (!the_one.Ok()) return;
 201
 202     GdkBitmap *mask = (GdkBitmap *) NULL;
 203     if (the_one.GetMask()) mask = the_one.GetMask()->GetBitmap();
 204
 205     GtkWidget *child = GTK_BIN(m_widget)->child;
 206     if (child == NULL)
 207     {
 208         // initial bitmap
 209         GtkWidget *pixmap;
 210
 211         if (the_one.HasPixbuf())
 212             pixmap = gtk_image_new_from_pixbuf(the_one.GetPixbuf());
 213         else
 214             pixmap = gtk_image_new_from_pixmap(the_one.GetPixmap(), mask);
 215
 216         gtk_widget_show(pixmap);
 217         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 218     }
 219     else
 220     {   // subsequent bitmaps
 221         GtkImage *pixmap = GTK_IMAGE(child);
 222         if (the_one.HasPixbuf())
 223             gtk_image_set_from_pixbuf(pixmap, the_one.GetPixbuf());
 224         else
 225             gtk_image_set_from_pixmap(pixmap, the_one.GetPixmap(), mask);
 226     }
 227 }
 228
 229 wxSize wxBitmapButton::DoGetBestSize() const
 230 {
 231     return wxControl::DoGetBestSize();
 232 }
 233
 234 bool wxBitmapButton::Enable( bool enable )
 235 {
 236     if ( !wxWindow::Enable(enable) )
 237         return false;
 238
 239     OnSetBitmap();
 240
 241     return true;
 242 }
 243
 244 void wxBitmapButton::HasFocus()
 245 {
 246     m_hasFocus = true;
 247     OnSetBitmap();
 248 }
 249
 250 void wxBitmapButton::NotFocus()
 251 {
 252     m_hasFocus = false;
 253     OnSetBitmap();
 254 }
 255
 256 void wxBitmapButton::StartSelect()
 257 {
 258     m_isSelected = true;
 259     OnSetBitmap();
 260 }
 261
 262 void wxBitmapButton::EndSelect()
 263 {
 264     m_isSelected = false;
 265     OnSetBitmap();
 266 }
 267
 268 #endif // wxUSE_BMPBUTTON