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
 141     if (style & wxNO_BORDER)
 142        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 143
 144     if (m_bmpNormal.Ok())
 145     {
 146         OnSetBitmap();
 147     }
 148
 149     g_signal_connect_after (m_widget, "clicked",
 150                             G_CALLBACK (gtk_bmpbutton_clicked_callback),
 151                             this);
 152
 153     g_signal_connect (m_widget, "enter",
 154                       G_CALLBACK (gtk_bmpbutton_enter_callback), this);
 155     g_signal_connect (m_widget, "leave",
 156                       G_CALLBACK (gtk_bmpbutton_leave_callback), this);
 157     g_signal_connect (m_widget, "pressed",
 158                       G_CALLBACK (gtk_bmpbutton_press_callback), this);
 159     g_signal_connect (m_widget, "released",
 160                       G_CALLBACK (gtk_bmpbutton_release_callback), this);
 161
 162     m_parent->DoAddChild( this );
 163
 164     PostCreation(size);
 165
 166     return true;
 167 }
 168
 169 void wxBitmapButton::SetLabel( const wxString &label )
 170 {
 171     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 172
 173     wxControl::SetLabel( label );
 174 }
 175
 176 void wxBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 177 {
 178     if (!GTK_BIN(m_widget)->child)
 179         return;
 180
 181     wxButton::DoApplyWidgetStyle(style);
 182 }
 183
 184 void wxBitmapButton::OnSetBitmap()
 185 {
 186     wxCHECK_RET( m_widget != NULL, wxT("invalid bitmap button") );
 187
 188     InvalidateBestSize();
 189
 190     wxBitmap the_one;
 191     if (!IsThisEnabled())
 192         the_one = m_bmpDisabled;
 193     else if (m_isPressed)
 194         the_one = m_bmpSelected;
 195     else if (m_mouseHovers)
 196         the_one = m_bmpHover;
 197     else if (HasFocus())
 198         the_one = m_bmpFocus;
 199     else
 200         the_one = m_bmpNormal;
 201
 202     if (!the_one.Ok())
 203         the_one = m_bmpNormal;
 204     if (!the_one.Ok())
 205         return;
 206
 207     GtkWidget *child = GTK_BIN(m_widget)->child;
 208     if (child == NULL)
 209     {
 210         // initial bitmap
 211         GtkWidget *pixmap =
 212             gtk_image_new_from_pixbuf(the_one.GetPixbuf());
 213
 214         gtk_widget_show(pixmap);
 215         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 216     }
 217     else
 218     {   // subsequent bitmaps
 219         GtkImage *pixmap = GTK_IMAGE(child);
 220         gtk_image_set_from_pixbuf(pixmap, the_one.GetPixbuf());
 221     }
 222 }
 223
 224 wxSize wxBitmapButton::DoGetBestSize() const
 225 {
 226     return wxControl::DoGetBestSize();
 227 }
 228
 229 bool wxBitmapButton::Enable( bool enable )
 230 {
 231     if ( !wxWindow::Enable(enable) )
 232         return false;
 233
 234     OnSetBitmap();
 235
 236     return true;
 237 }
 238
 239 void wxBitmapButton::GTKMouseEnters()
 240 {
 241     m_mouseHovers = true;
 242     OnSetBitmap();
 243 }
 244
 245 void wxBitmapButton::GTKMouseLeaves()
 246 {
 247     m_mouseHovers = false;
 248     OnSetBitmap();
 249 }
 250
 251 void wxBitmapButton::GTKPressed()
 252 {
 253     m_isPressed = true;
 254     OnSetBitmap();
 255 }
 256
 257 void wxBitmapButton::GTKReleased()
 258 {
 259     m_isPressed = false;
 260     OnSetBitmap();
 261 }
 262
 263 void wxBitmapButton::OnFocusChange(wxFocusEvent& event)
 264 {
 265     event.Skip();
 266     OnSetBitmap();
 267 }
 268
 269 #endif // wxUSE_BMPBUTTON