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 <gtk/gtk.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 (!button->m_hasVMT) return;
  39     if (g_blockEventsOnDrag) return;
  40
  41     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
  42     event.SetEventObject(button);
  43     button->HandleWindowEvent(event);
  44 }
  45 }
  46
  47 //-----------------------------------------------------------------------------
  48 // "enter"
  49 //-----------------------------------------------------------------------------
  50
  51 extern "C" {
  52 static void gtk_bmpbutton_enter_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  53 {
  54     if (!button->m_hasVMT) return;
  55     if (g_blockEventsOnDrag) return;
  56
  57     button->GTKMouseEnters();
  58 }
  59 }
  60
  61 //-----------------------------------------------------------------------------
  62 // "leave"
  63 //-----------------------------------------------------------------------------
  64
  65 extern "C" {
  66 static void gtk_bmpbutton_leave_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  67 {
  68     if (!button->m_hasVMT) return;
  69     if (g_blockEventsOnDrag) return;
  70
  71     button->GTKMouseLeaves();
  72 }
  73 }
  74
  75 //-----------------------------------------------------------------------------
  76 // "pressed"
  77 //-----------------------------------------------------------------------------
  78
  79 extern "C" {
  80 static void gtk_bmpbutton_press_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  81 {
  82     if (!button->m_hasVMT) return;
  83     if (g_blockEventsOnDrag) return;
  84
  85     button->GTKPressed();
  86 }
  87 }
  88
  89 //-----------------------------------------------------------------------------
  90 // "released"
  91 //-----------------------------------------------------------------------------
  92
  93 extern "C" {
  94 static void gtk_bmpbutton_release_callback( GtkWidget *WXUNUSED(widget), wxBitmapButton *button )
  95 {
  96     if (!button->m_hasVMT) return;
  97     if (g_blockEventsOnDrag) return;
  98
  99     button->GTKReleased();
 100 }
 101 }
 102
 103 //-----------------------------------------------------------------------------
 104 // wxBitmapButton
 105 //-----------------------------------------------------------------------------
 106
 107 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton,wxButton)
 108
 109 BEGIN_EVENT_TABLE(wxBitmapButton, wxButton)
 110     EVT_SET_FOCUS(wxBitmapButton::OnFocusChange)
 111     EVT_KILL_FOCUS(wxBitmapButton::OnFocusChange)
 112 END_EVENT_TABLE()
 113
 114
 115 void wxBitmapButton::Init()
 116 {
 117     m_mouseHovers =
 118     m_isPressed = 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     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 = bitmap;
 138
 139     m_widget = gtk_button_new();
 140     g_object_ref(m_widget);
 141
 142     if (style & wxNO_BORDER)
 143        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 144
 145     if (m_bmpNormal.Ok())
 146     {
 147         OnSetBitmap();
 148     }
 149
 150     g_signal_connect_after (m_widget, "clicked",
 151                             G_CALLBACK (gtk_bmpbutton_clicked_callback),
 152                             this);
 153
 154     g_signal_connect (m_widget, "enter",
 155                       G_CALLBACK (gtk_bmpbutton_enter_callback), this);
 156     g_signal_connect (m_widget, "leave",
 157                       G_CALLBACK (gtk_bmpbutton_leave_callback), this);
 158     g_signal_connect (m_widget, "pressed",
 159                       G_CALLBACK (gtk_bmpbutton_press_callback), this);
 160     g_signal_connect (m_widget, "released",
 161                       G_CALLBACK (gtk_bmpbutton_release_callback), this);
 162
 163     m_parent->DoAddChild( this );
 164
 165     PostCreation(size);
 166
 167     return true;
 168 }
 169
 170 void wxBitmapButton::SetLabel( const wxString &label )
 171 {
 172     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 173
 174     wxControl::SetLabel( label );
 175 }
 176
 177 void wxBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 178 {
 179     if (!GTK_BIN(m_widget)->child)
 180         return;
 181
 182     wxButton::DoApplyWidgetStyle(style);
 183 }
 184
 185 void wxBitmapButton::OnSetBitmap()
 186 {
 187     wxCHECK_RET( m_widget != NULL, wxT("invalid bitmap button") );
 188
 189     InvalidateBestSize();
 190
 191     wxBitmap the_one;
 192     if (!IsThisEnabled())
 193         the_one = m_bmpDisabled;
 194     else if (m_isPressed)
 195         the_one = m_bmpSelected;
 196     else if (m_mouseHovers)
 197         the_one = m_bmpHover;
 198     else if (HasFocus())
 199         the_one = m_bmpFocus;
 200     else
 201         the_one = m_bmpNormal;
 202
 203     if (!the_one.Ok())
 204         the_one = m_bmpNormal;
 205     if (!the_one.Ok())
 206         return;
 207
 208     GtkWidget* image = GTK_BIN(m_widget)->child;
 209     if (image == NULL)
 210     {
 211         image = gtk_image_new();
 212         gtk_widget_show(image);
 213         gtk_container_add(GTK_CONTAINER(m_widget), image);
 214     }
 215     // always use pixbuf, because pixmap mask does not
 216     // work with disabled images in some themes
 217     gtk_image_set_from_pixbuf(GTK_IMAGE(image), the_one.GetPixbuf());
 218 }
 219
 220 wxSize wxBitmapButton::DoGetBestSize() const
 221 {
 222     return wxControl::DoGetBestSize();
 223 }
 224
 225 bool wxBitmapButton::Enable( bool enable )
 226 {
 227     if ( !wxWindow::Enable(enable) )
 228         return false;
 229
 230     OnSetBitmap();
 231
 232     return true;
 233 }
 234
 235 void wxBitmapButton::GTKMouseEnters()
 236 {
 237     m_mouseHovers = true;
 238     OnSetBitmap();
 239 }
 240
 241 void wxBitmapButton::GTKMouseLeaves()
 242 {
 243     m_mouseHovers = false;
 244     OnSetBitmap();
 245 }
 246
 247 void wxBitmapButton::GTKPressed()
 248 {
 249     m_isPressed = true;
 250     OnSetBitmap();
 251 }
 252
 253 void wxBitmapButton::GTKReleased()
 254 {
 255     m_isPressed = false;
 256     OnSetBitmap();
 257 }
 258
 259 void wxBitmapButton::OnFocusChange(wxFocusEvent& event)
 260 {
 261     event.Skip();
 262     OnSetBitmap();
 263 }
 264
 265 #endif // wxUSE_BMPBUTTON