don't return void values

[wxWidgets.git] / src / gtk / clipbrd.cpp

diff --git a/src/gtk/clipbrd.cpp b/src/gtk/clipbrd.cpp
index 4a918060df3a379dfe682b9ce44c8bbcff9f008f..e5aec7830b4a85b0ae521afabffc8e28e872b3e6 100644 (file)
--- a/src/gtk/clipbrd.cpp
+++ b/src/gtk/clipbrd.cpp
@@ -4,13 +4,9 @@
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling

-// Licence:     wxWidgets licence
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "clipbrd.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -22,9 +18,7 @@
 #include "wx/utils.h"
 #include "wx/log.h"
 
 #include "wx/utils.h"
 #include "wx/log.h"
 

-#include <glib.h>
-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
+#include "wx/gtk/private.h"

 
 //-----------------------------------------------------------------------------
 // thread system
 
 //-----------------------------------------------------------------------------
 // thread system


@@ -39,6 +33,7 @@
 
 GdkAtom  g_clipboardAtom   = 0;
 GdkAtom  g_targetsAtom     = 0;
 
 GdkAtom  g_clipboardAtom   = 0;
 GdkAtom  g_targetsAtom     = 0;

+GdkAtom  g_timestampAtom   = 0;

 
 #if defined(__WXGTK20__) && wxUSE_UNICODE
 extern GdkAtom g_altTextAtom;
 
 #if defined(__WXGTK20__) && wxUSE_UNICODE
 extern GdkAtom g_altTextAtom;


@@ -78,6 +73,7 @@ struct _GtkSelectionData
 // "selection_received" for targets
 //-----------------------------------------------------------------------------
 
 // "selection_received" for targets
 //-----------------------------------------------------------------------------
 

+extern "C" {

 static void
 targets_selection_received( GtkWidget *WXUNUSED(widget),
                             GtkSelectionData *selection_data,
 static void
 targets_selection_received( GtkWidget *WXUNUSED(widget),
                             GtkSelectionData *selection_data,


@@ -90,7 +86,7 @@ targets_selection_received( GtkWidget *WXUNUSED(widget),
         GdkAtom type = selection_data->type;
         if ( type != GDK_SELECTION_TYPE_ATOM )
         {
         GdkAtom type = selection_data->type;
         if ( type != GDK_SELECTION_TYPE_ATOM )
         {

-            if ( strcmp(gdk_atom_name(type), "TARGETS") )
+            if ( strcmp(wxGtkString(gdk_atom_name(type)), "TARGETS") )

             {
                 wxLogTrace( TRACE_CLIPBOARD,
                             _T("got unsupported clipboard target") );
             {
                 wxLogTrace( TRACE_CLIPBOARD,
                             _T("got unsupported clipboard target") );


@@ -118,7 +114,7 @@ targets_selection_received( GtkWidget *WXUNUSED(widget),
                         wxT("selection received for targets, format %s"),
                         format.GetId().c_str() );
 
                         wxT("selection received for targets, format %s"),
                         format.GetId().c_str() );
 

-//            printf( "format %s requested %s\n", 
+//            printf( "format %s requested %s\n",

 //                    gdk_atom_name( atoms[i] ),
 //                    gdk_atom_name( clipboard->m_targetRequested ) );
 
 //                    gdk_atom_name( atoms[i] ),
 //                    gdk_atom_name( clipboard->m_targetRequested ) );
 


@@ -133,11 +129,13 @@ targets_selection_received( GtkWidget *WXUNUSED(widget),
 
     clipboard->m_waiting = FALSE;
 }
 
     clipboard->m_waiting = FALSE;
 }

+}

 
 //-----------------------------------------------------------------------------
 // "selection_received" for the actual data
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // "selection_received" for the actual data
 //-----------------------------------------------------------------------------
 

+extern "C" {

 static void
 selection_received( GtkWidget *WXUNUSED(widget),
                     GtkSelectionData *selection_data,
 static void
 selection_received( GtkWidget *WXUNUSED(widget),
                     GtkSelectionData *selection_data,


@@ -189,11 +187,13 @@ selection_received( GtkWidget *WXUNUSED(widget),
     wxTheClipboard->m_formatSupported = TRUE;
     clipboard->m_waiting = FALSE;
 }
     wxTheClipboard->m_formatSupported = TRUE;
     clipboard->m_waiting = FALSE;
 }

+}

 
 //-----------------------------------------------------------------------------
 // "selection_clear"
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // "selection_clear"
 //-----------------------------------------------------------------------------
 

+extern "C" {

 static gint
 selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event )
 {
 static gint
 selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event )
 {


@@ -230,17 +230,19 @@ selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event )
     wxTheClipboard->m_waiting = FALSE;
     return TRUE;
 }
     wxTheClipboard->m_waiting = FALSE;
     return TRUE;
 }

+}

 
 //-----------------------------------------------------------------------------
 // selection handler for supplying data
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // selection handler for supplying data
 //-----------------------------------------------------------------------------
 

+extern "C" {

 static void
 selection_handler( GtkWidget *WXUNUSED(widget),
                    GtkSelectionData *selection_data,
                    guint WXUNUSED(info),
                    guint WXUNUSED(time),
 static void
 selection_handler( GtkWidget *WXUNUSED(widget),
                    GtkSelectionData *selection_data,
                    guint WXUNUSED(info),
                    guint WXUNUSED(time),

-                   gpointer WXUNUSED(data) )
+                   gpointer signal_data )

 {
     if (!wxTheClipboard) return;
 
 {
     if (!wxTheClipboard) return;
 


@@ -248,8 +250,37 @@ selection_handler( GtkWidget *WXUNUSED(widget),
 
     wxDataObject *data = wxTheClipboard->m_data;
 
 
     wxDataObject *data = wxTheClipboard->m_data;
 

+    // ICCCM says that TIMESTAMP is a required atom.
+    // In particular, it satisfies Klipper, which polls
+    // TIMESTAMP to see if the clipboards content has changed.
+    // It shall return the time which was used to set the data.
+    if (selection_data->target == g_timestampAtom)
+    {
+        uint timestamp = GPOINTER_TO_UINT (signal_data);
+        gtk_selection_data_set(selection_data,
+                               GDK_SELECTION_TYPE_INTEGER,
+                               32,
+                               (guchar*)&(timestamp),
+                               sizeof(timestamp));
+        wxLogTrace(TRACE_CLIPBOARD,
+                   _T("Clipboard TIMESTAMP requested, returning timestamp=%u"),
+                   timestamp);
+        return;
+    }
+

     wxDataFormat format( selection_data->target );
 
     wxDataFormat format( selection_data->target );
 

+#ifdef __WXDEBUG__
+    wxLogTrace(TRACE_CLIPBOARD,
+               _T("clipboard data in format %s, GtkSelectionData is target=%s type=%s selection=%s timestamp=%u"),
+               format.GetId().c_str(),
+               wxString::FromAscii(wxGtkString(gdk_atom_name(selection_data->target))).c_str(),
+               wxString::FromAscii(wxGtkString(gdk_atom_name(selection_data->type))).c_str(),
+               wxString::FromAscii(wxGtkString(gdk_atom_name(selection_data->selection))).c_str(),
+               GPOINTER_TO_UINT( signal_data )
+               );
+#endif
+

     if (!data->IsSupportedFormat( format )) return;
 
     int size = data->GetDataSize( format );
     if (!data->IsSupportedFormat( format )) return;
 
     int size = data->GetDataSize( format );


@@ -261,15 +292,29 @@ selection_handler( GtkWidget *WXUNUSED(widget),
     // Text data will be in UTF8 in Unicode mode.
     data->GetDataHere( selection_data->target, d );
 
     // Text data will be in UTF8 in Unicode mode.
     data->GetDataHere( selection_data->target, d );
 

-    gtk_selection_data_set(
-        selection_data,
-        GDK_SELECTION_TYPE_STRING,
-        8*sizeof(gchar),
-        (unsigned char*) d,
-        size );
+    // NB: GTK+ requires special treatment of UTF8_STRING data, the text
+    //     would show as UTF-8 data interpreted as latin1 (?) in other
+    //     GTK+ apps if we used gtk_selection_data_set()
+    if (format == wxDataFormat(wxDF_UNICODETEXT))
+    {
+        gtk_selection_data_set_text(
+            selection_data,
+            (const gchar*)d,
+            size );
+    }
+    else
+    {
+        gtk_selection_data_set(
+            selection_data,
+            GDK_SELECTION_TYPE_STRING,
+            8*sizeof(gchar),
+            (unsigned char*) d,
+            size );
+    }

 
     free(d);
 }
 
     free(d);
 }

+}

 
 //-----------------------------------------------------------------------------
 // wxClipboard
 
 //-----------------------------------------------------------------------------
 // wxClipboard


@@ -293,28 +338,23 @@ wxClipboard::wxClipboard()
     m_targetsWidget = gtk_window_new( GTK_WINDOW_POPUP );
     gtk_widget_realize( m_targetsWidget );
 
     m_targetsWidget = gtk_window_new( GTK_WINDOW_POPUP );
     gtk_widget_realize( m_targetsWidget );
 

-    gtk_signal_connect( GTK_OBJECT(m_targetsWidget),
-                        "selection_received",
-                        GTK_SIGNAL_FUNC( targets_selection_received ),
-                        (gpointer) this );
+    g_signal_connect (m_targetsWidget, "selection_received",
+                      G_CALLBACK (targets_selection_received), this);

 
     /* we use m_clipboardWidget to get and to offer data */
 
     m_clipboardWidget = gtk_window_new( GTK_WINDOW_POPUP );
     gtk_widget_realize( m_clipboardWidget );
 
 
     /* we use m_clipboardWidget to get and to offer data */
 
     m_clipboardWidget = gtk_window_new( GTK_WINDOW_POPUP );
     gtk_widget_realize( m_clipboardWidget );
 

-    gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
-                        "selection_received",
-                        GTK_SIGNAL_FUNC( selection_received ),
-                        (gpointer) this );
+    g_signal_connect (m_clipboardWidget, "selection_received",
+                      G_CALLBACK (selection_received), this);

 
 

-    gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
-                        "selection_clear_event",
-                        GTK_SIGNAL_FUNC( selection_clear_clip ),
-                        (gpointer) NULL );
+    g_signal_connect (m_clipboardWidget, "selection_clear_event",
+                      G_CALLBACK (selection_clear_clip), NULL);

 
     if (!g_clipboardAtom) g_clipboardAtom = gdk_atom_intern( "CLIPBOARD", FALSE );
     if (!g_targetsAtom) g_targetsAtom = gdk_atom_intern ("TARGETS", FALSE);
 
     if (!g_clipboardAtom) g_clipboardAtom = gdk_atom_intern( "CLIPBOARD", FALSE );
     if (!g_targetsAtom) g_targetsAtom = gdk_atom_intern ("TARGETS", FALSE);

+    if (!g_timestampAtom) g_timestampAtom = gdk_atom_intern ("TIMESTAMP", FALSE);

 
     m_formatSupported = FALSE;
     m_targetRequested = 0;
 
     m_formatSupported = FALSE;
     m_targetRequested = 0;


@@ -414,6 +454,11 @@ bool wxClipboard::AddData( wxDataObject *data )
     GdkAtom clipboard = m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
                                      : g_clipboardAtom;
 
     GdkAtom clipboard = m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
                                      : g_clipboardAtom;
 

+    // by default provide TIMESTAMP as a target
+    gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
+                              clipboard,
+                              g_timestampAtom,
+                              0 );

 
     for (size_t i = 0; i < m_data->GetFormatCount(); i++)
     {
 
     for (size_t i = 0; i < m_data->GetFormatCount(); i++)
     {


@@ -421,9 +466,9 @@ bool wxClipboard::AddData( wxDataObject *data )
                     wxT("wxClipboard now supports atom %s"),
                     array[i].GetId().c_str() );
 
                     wxT("wxClipboard now supports atom %s"),
                     array[i].GetId().c_str() );
 

-//        printf( "added %s\n", 
+//        printf( "added %s\n",

 //                    gdk_atom_name( array[i].GetFormatId() ) );
 //                    gdk_atom_name( array[i].GetFormatId() ) );

-                    
+

         gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
                                   clipboard,
                                   array[i],
         gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
                                   clipboard,
                                   array[i],


@@ -432,10 +477,9 @@ bool wxClipboard::AddData( wxDataObject *data )
 
     delete[] array;
 
 
     delete[] array;
 

-    gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
-                        "selection_get",
-                        GTK_SIGNAL_FUNC(selection_handler),
-                        (gpointer) NULL );
+    g_signal_connect (m_clipboardWidget, "selection_get",
+                      G_CALLBACK (selection_handler),
+                      GUINT_TO_POINTER (gtk_get_current_event_time()) );

 
 #if wxUSE_THREADS
     /* disable GUI threads */
 
 #if wxUSE_THREADS
     /* disable GUI threads */


@@ -478,11 +522,9 @@ bool wxClipboard::IsSupported( const wxDataFormat& format )
     /* store requested format to be asked for by callbacks */
     m_targetRequested = format;
 
     /* store requested format to be asked for by callbacks */
     m_targetRequested = format;
 

-#if 0

     wxLogTrace( TRACE_CLIPBOARD,
                 wxT("wxClipboard:IsSupported: requested format: %s"),
                 format.GetId().c_str() );
     wxLogTrace( TRACE_CLIPBOARD,
                 wxT("wxClipboard:IsSupported: requested format: %s"),
                 format.GetId().c_str() );

-#endif

 
     wxCHECK_MSG( m_targetRequested, FALSE, wxT("invalid clipboard format") );
 
 
     wxCHECK_MSG( m_targetRequested, FALSE, wxT("invalid clipboard format") );
 


@@ -515,9 +557,7 @@ bool wxClipboard::IsSupported( const wxDataFormat& format )
     }
 #endif
 
     }
 #endif
 

-    if (!m_formatSupported) return FALSE;
-
-    return TRUE;
+    return m_formatSupported;

 }
 
 bool wxClipboard::GetData( wxDataObject& data )
 }
 
 bool wxClipboard::GetData( wxDataObject& data )


@@ -616,4 +656,3 @@ bool wxClipboard::GetData( wxDataObject& data )
 
 #endif
   // wxUSE_CLIPBOARD
 
 #endif
   // wxUSE_CLIPBOARD

-