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->GetEventHandler()->ProcessEvent(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->HasFocus();
  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->NotFocus();
  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->StartSelect();
  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->EndSelect();
 100 }
 101 }
 102
 103 //-----------------------------------------------------------------------------
 104 // wxBitmapButton
 105 //-----------------------------------------------------------------------------
 106
 107 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton,wxButton)
 108
 109 void wxBitmapButton::Init()
 110 {
 111     m_hasFocus =
 112     m_isSelected = false;
 113 }
 114
 115 bool wxBitmapButton::Create( wxWindow *parent,
 116                              wxWindowID id,
 117                              const wxBitmap& bitmap,
 118                              const wxPoint& pos,
 119                              const wxSize& size,
 120                              long style,
 121                              const wxValidator& validator,
 122                              const wxString &name )
 123 {
 124     if (!PreCreation( parent, pos, size ) ||
 125         !CreateBase( parent, id, pos, size, style, validator, name ))
 126     {
 127         wxFAIL_MSG( wxT("wxBitmapButton creation failed") );
 128         return false;
 129     }
 130
 131     m_bmpNormal = bitmap;
 132
 133     m_widget = gtk_button_new();
 134
 135     if (style & wxNO_BORDER)
 136        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
 137
 138     if (m_bmpNormal.Ok())
 139     {
 140         OnSetBitmap();
 141     }
 142
 143     g_signal_connect_after (m_widget, "clicked",
 144                             G_CALLBACK (gtk_bmpbutton_clicked_callback),
 145                             this);
 146
 147     g_signal_connect (m_widget, "enter",
 148                       G_CALLBACK (gtk_bmpbutton_enter_callback), this);
 149     g_signal_connect (m_widget, "leave",
 150                       G_CALLBACK (gtk_bmpbutton_leave_callback), this);
 151     g_signal_connect (m_widget, "pressed",
 152                       G_CALLBACK (gtk_bmpbutton_press_callback), this);
 153     g_signal_connect (m_widget, "released",
 154                       G_CALLBACK (gtk_bmpbutton_release_callback), this);
 155
 156     m_parent->DoAddChild( this );
 157
 158     PostCreation(size);
 159
 160     return true;
 161 }
 162
 163 void wxBitmapButton::SetLabel( const wxString &label )
 164 {
 165     wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
 166
 167     wxControl::SetLabel( label );
 168 }
 169
 170 void wxBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 171 {
 172     if (!GTK_BIN(m_widget)->child)
 173         return;
 174
 175     wxButton::DoApplyWidgetStyle(style);
 176 }
 177
 178 void wxBitmapButton::OnSetBitmap()
 179 {
 180     wxCHECK_RET( m_widget != NULL, wxT("invalid bitmap button") );
 181
 182     InvalidateBestSize();
 183
 184     wxBitmap the_one;
 185     if (!IsThisEnabled())
 186         the_one = m_bmpDisabled;
 187     else if (m_isSelected)
 188         the_one = m_bmpSelected;
 189     else if (m_hasFocus)
 190         the_one = m_bmpFocus;
 191     else
 192         the_one = m_bmpNormal;
 193
 194     if (!the_one.Ok()) the_one = m_bmpNormal;
 195     if (!the_one.Ok()) return;
 196
 197     GtkWidget *child = GTK_BIN(m_widget)->child;
 198     if (child == NULL)
 199     {
 200         // initial bitmap
 201         GtkWidget *pixmap =
 202             gtk_image_new_from_pixbuf(the_one.GetPixbuf());
 203
 204         gtk_widget_show(pixmap);
 205         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 206     }
 207     else
 208     {   // subsequent bitmaps
 209         GtkImage *pixmap = GTK_IMAGE(child);
 210         gtk_image_set_from_pixbuf(pixmap, the_one.GetPixbuf());
 211     }
 212 }
 213
 214 wxSize wxBitmapButton::DoGetBestSize() const
 215 {
 216     return wxControl::DoGetBestSize();
 217 }
 218
 219 bool wxBitmapButton::Enable( bool enable )
 220 {
 221     if ( !wxWindow::Enable(enable) )
 222         return false;
 223
 224     OnSetBitmap();
 225
 226     return true;
 227 }
 228
 229 void wxBitmapButton::HasFocus()
 230 {
 231     m_hasFocus = true;
 232     OnSetBitmap();
 233 }
 234
 235 void wxBitmapButton::NotFocus()
 236 {
 237     m_hasFocus = false;
 238     OnSetBitmap();
 239 }
 240
 241 void wxBitmapButton::StartSelect()
 242 {
 243     m_isSelected = true;
 244     OnSetBitmap();
 245 }
 246
 247 void wxBitmapButton::EndSelect()
 248 {
 249     m_isSelected = false;
 250     OnSetBitmap();
 251 }
 252
 253 #endif // wxUSE_BMPBUTTON