#include "wx/clipbrd.h"
+#if wxUSE_CLIPBOARD
+
+#include "wx/utils.h"
+
+#include "glib.h"
+#include "gdk/gdk.h"
+#include "gtk/gtk.h"
+
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
wxClipboard *wxTheClipboard = (wxClipboard*) NULL;
-GdkAtom g_textAtom = 0;
GdkAtom g_clipboardAtom = 0;
GdkAtom g_targetsAtom = 0;
static void
targets_selection_received( GtkWidget *WXUNUSED(widget),
GtkSelectionData *selection_data,
+#if (GTK_MINOR_VERSION > 0)
+ guint32 WXUNUSED(time),
+#endif
wxClipboard *clipboard )
{
- if (!wxTheClipboard) return;
-
- if (selection_data->length <= 0) return;
+ if (!wxTheClipboard)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
- // make sure we got the data in the correct form
- if (selection_data->type != GDK_SELECTION_TYPE_ATOM) return;
+ if (selection_data->length <= 0)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
+
+ /* make sure we got the data in the correct form */
+ if (selection_data->type != GDK_SELECTION_TYPE_ATOM)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
- // the atoms we received, holding a list of targets (= formats)
- GdkAtom *atoms = (GdkAtom *)selection_data->data;
-
- for (unsigned int i=0; i<selection_data->length/sizeof(GdkAtom); i++)
- {
- if (atoms[i] == clipboard->m_targetRequested)
- {
- clipboard->m_formatSupported = TRUE;
- return;
- }
- }
-
- return;
+ // the atoms we received, holding a list of targets (= formats)
+ GdkAtom *atoms = (GdkAtom *)selection_data->data;
+
+ for (unsigned int i=0; i<selection_data->length/sizeof(GdkAtom); i++)
+ {
+/* char *name = gdk_atom_name (atoms[i]);
+ if (name) printf( "Format available: %s.\n", name ); */
+
+ if (atoms[i] == clipboard->m_targetRequested)
+ {
+ clipboard->m_waiting = FALSE;
+ clipboard->m_formatSupported = TRUE;
+ return;
+ }
+ }
+
+ clipboard->m_waiting = FALSE;
+ return;
}
//-----------------------------------------------------------------------------
static void
selection_received( GtkWidget *WXUNUSED(widget),
GtkSelectionData *selection_data,
+#if (GTK_MINOR_VERSION > 0)
+ guint32 WXUNUSED(time),
+#endif
wxClipboard *clipboard )
{
- if (!wxTheClipboard) return;
-
- if (selection_data->length <= 0) return;
-
- size_t size = (size_t) selection_data->length;
-
- // make sure we got the data in the correct form
- if (selection_data->type != GDK_SELECTION_TYPE_STRING) return;
-
- clipboard->m_receivedSize = size;
+ if (!wxTheClipboard)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
- clipboard->m_receivedData = new char[size+1];
+ wxDataObject *data_object = clipboard->m_receivedData;
+
+ if (!data_object)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
+
+ if (selection_data->length <= 0)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
- memcpy( clipboard->m_receivedData, selection_data->data, size);
+ /* make sure we got the data in the correct format */
+ if (data_object->GetFormat().GetAtom() != selection_data->target)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
+
+ /* make sure we got the data in the correct form (selection type).
+ if so, copy data to target object */
+
+ switch (data_object->GetFormat().GetType())
+ {
+ case wxDF_TEXT:
+ {
+ if (selection_data->type != GDK_SELECTION_TYPE_STRING)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
+
+ wxTextDataObject *text_object = (wxTextDataObject *) data_object;
+
+ wxString text = (const char*) selection_data->data;
+
+ text_object->SetText( text );
+
+ break;
+ }
+
+ case wxDF_BITMAP:
+ {
+ if (selection_data->type != GDK_SELECTION_TYPE_BITMAP)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
+
+ break;
+ }
+
+ case wxDF_PRIVATE:
+ {
+ if (selection_data->type != GDK_SELECTION_TYPE_STRING)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
+
+ wxPrivateDataObject *private_object = (wxPrivateDataObject *) data_object;
+
+ private_object->SetData( (const char*) selection_data->data, (size_t) selection_data->length );
+
+ break;
+ }
+
+ default:
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
+ }
+
+ wxTheClipboard->m_formatSupported = TRUE;
+ clipboard->m_waiting = FALSE;
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
static gint
-selection_clear( GtkWidget *WXUNUSED(widget), GdkEventSelection *WXUNUSED(event) )
+selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event )
{
- if (!wxTheClipboard) return TRUE;
-
- /* the clipboard is no longer in our hands. we can delete the
- * clipboard data. I hope I got that one right... */
+ if (!wxTheClipboard) return TRUE;
+
+ if (event->selection == GDK_SELECTION_PRIMARY)
+ {
+ wxTheClipboard->m_ownsPrimarySelection = FALSE;
+ }
+ else
+ if (event->selection == g_clipboardAtom)
+ {
+ wxTheClipboard->m_ownsClipboard = FALSE;
+ }
+ else
+ {
+ wxTheClipboard->m_waiting = FALSE;
+ return FALSE;
+ }
- wxTheClipboard->SetData( (wxDataObject*) NULL );
+ if ((!wxTheClipboard->m_ownsPrimarySelection) &&
+ (!wxTheClipboard->m_ownsClipboard))
+ {
+ /* the clipboard is no longer in our hands. we can the clipboard data. */
+
+ if (wxTheClipboard->m_dataBroker)
+ {
+ delete wxTheClipboard->m_dataBroker;
+ wxTheClipboard->m_dataBroker = (wxDataBroker*) NULL;
+ }
+ }
- return TRUE;
+ wxTheClipboard->m_waiting = FALSE;
+ return TRUE;
}
//-----------------------------------------------------------------------------
static void
selection_handler( GtkWidget *WXUNUSED(widget), GtkSelectionData *selection_data, gpointer WXUNUSED(data) )
{
- if (!wxTheClipboard) return;
-
- wxDataObject *data_object = wxTheClipboard->m_data;
-
- if (!data_object) return;
-
- if (data_object->GetDataSize() == 0) return;
-
+ if (!wxTheClipboard) return;
+ if (!wxTheClipboard->m_dataBroker) return;
- gint len = data_object->GetDataSize();
- guchar *bin_data = (guchar*) malloc( len );
- data_object->GetDataHere( (void*)bin_data );
-
- if (selection_data->target == GDK_TARGET_STRING)
- {
- gtk_selection_data_set(
- selection_data, GDK_SELECTION_TYPE_STRING, 8*sizeof(gchar), bin_data, len );
- }
-/*
- else if (selection_data->target == g_textAtom)
- {
- gtk_selection_data_set(
- selection_data, g_textAtom, 8*sizeof(gchar), bin_data, len );
- }
-*/
- free( bin_data );
+ wxNode *node = wxTheClipboard->m_dataBroker->m_dataObjects.First();
+
+ while (node)
+ {
+ wxDataObject *data_object = (wxDataObject *)node->Data();
+
+ if (data_object->GetFormat().GetAtom() != selection_data->target)
+ {
+ node = node->Next();
+ continue;
+ }
+
+ switch (data_object->GetFormat().GetType())
+ {
+ case wxDF_TEXT:
+ {
+ wxTextDataObject *text_object = (wxTextDataObject*) data_object;
+
+ wxString text = text_object->GetText();
+
+#if wxUSE_UNICODE
+ const wxWX2MBbuf s = text.mbc_str();
+ int len = strlen(s);
+#else // more efficient in non-Unicode
+ const char *s = text.c_str();
+ int len = (int) text.Length();
+#endif
+
+ gtk_selection_data_set(
+ selection_data,
+ GDK_SELECTION_TYPE_STRING,
+ 8*sizeof(gchar),
+ (unsigned char*) (const char*) s,
+ len );
+
+ break;
+ }
+
+ case wxDF_BITMAP:
+ {
+ // wxBitmapDataObject *private_object = (wxBitmapDataObject*) data_object;
+
+ // how do we do that ?
+
+ break;
+ }
+
+ case wxDF_PRIVATE:
+ {
+ wxPrivateDataObject *private_object = (wxPrivateDataObject*) data_object;
+
+ if (private_object->GetSize() == 0) return;
+
+ gtk_selection_data_set(
+ selection_data,
+ GDK_SELECTION_TYPE_STRING,
+ 8*sizeof(gchar),
+ (unsigned char*) private_object->GetData(),
+ (int) private_object->GetSize() );
+ }
+
+ default:
+ break;
+ }
+
+ node = node->Next();
+ }
}
//-----------------------------------------------------------------------------
wxClipboard::wxClipboard()
{
- m_data = (wxDataObject*) NULL;
+ m_open = FALSE;
+
+ m_ownsClipboard = FALSE;
+ m_ownsPrimarySelection = FALSE;
+
+ m_dataBroker = (wxDataBroker*) NULL;
- gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
- "selection_clear_event",
- GTK_SIGNAL_FUNC( selection_clear ),
- (gpointer) NULL );
+ m_receivedData = (wxDataObject*) NULL;
+
+ /* we use m_targetsWidget to query what formats are available */
+
+ 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 );
+
+ /* 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 );
+
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+ "selection_clear_event",
+ GTK_SIGNAL_FUNC( selection_clear_clip ),
+ (gpointer) NULL );
- if (!g_clipboardAtom) g_clipboardAtom = gdk_atom_intern( "CLIPBOARD", FALSE );
- if (!g_textAtom) g_textAtom = gdk_atom_intern( "TEXT", 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);
- m_receivedData = (char*)NULL;
- m_receivedSize = 0;
- m_formatSupported = FALSE;
- m_targetRequested = 0;
+ m_formatSupported = FALSE;
+ m_targetRequested = 0;
}
wxClipboard::~wxClipboard()
{
- Clear();
+ Clear();
- if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
+ if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
+ if (m_targetsWidget) gtk_widget_destroy( m_targetsWidget );
}
void wxClipboard::Clear()
{
- /* As we have data we also own the clipboard. Once we no longer own
- it, clear_selection is called which will set m_data to zero */
+ if (m_dataBroker)
+ {
+ /* As we have data we also own the clipboard. Once we no longer own
+ it, clear_selection is called which will set m_data to zero */
- if (m_data)
- {
- if (gdk_selection_owner_get( g_clipboardAtom) == m_clipboardWidget->window)
- {
- gtk_selection_owner_set( (GtkWidget*) NULL, g_clipboardAtom, GDK_CURRENT_TIME );
- }
+ if (gdk_selection_owner_get( g_clipboardAtom ) == m_clipboardWidget->window)
+ {
+ m_waiting = TRUE;
+
+ gtk_selection_owner_set( (GtkWidget*) NULL, g_clipboardAtom, GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+ }
- delete m_data;
- m_data = (wxDataObject*) NULL;
- }
-
- m_receivedSize = 0;
-
- if (m_receivedData)
- {
- delete[] m_receivedData;
- m_receivedData = (char*) NULL;
- }
+ if (gdk_selection_owner_get( GDK_SELECTION_PRIMARY ) == m_clipboardWidget->window)
+ {
+ m_waiting = TRUE;
+
+ gtk_selection_owner_set( (GtkWidget*) NULL, GDK_SELECTION_PRIMARY, GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+ }
+
+ if (m_dataBroker)
+ {
+ delete m_dataBroker;
+ m_dataBroker = (wxDataBroker*) NULL;
+ }
+ }
- m_targetRequested = 0;
+ m_targetRequested = 0;
- m_formatSupported = FALSE;
+ m_formatSupported = FALSE;
}
-void wxClipboard::SetData( wxDataObject *data )
+bool wxClipboard::Open()
{
- Clear();
+ wxCHECK_MSG( !m_open, FALSE, _T("clipboard already open") );
-/*
- GTK 1.0.X cannot remove a target from a widget so if a widget
- at first offers text and then a bitmap (and no longer text) to
- the clipboard, we seem too have to delete it.
-*/
-
- if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
+ m_open = TRUE;
- m_clipboardWidget = gtk_window_new( GTK_WINDOW_POPUP );
- gtk_widget_realize( m_clipboardWidget );
-
-
- if (m_data) delete m_data;
- m_data = data;
- if (!m_data) return;
-
- if (!gtk_selection_owner_set( m_clipboardWidget,
- g_clipboardAtom,
- GDK_CURRENT_TIME))
- {
- delete m_data;
- m_data = (wxDataObject*) NULL;
- return;
- }
-
- switch (m_data->GetPreferredFormat())
- {
- case wxDF_TEXT:
- gtk_selection_add_handler( m_clipboardWidget,
- g_clipboardAtom,
- // g_textAtom,
- GDK_TARGET_STRING,
- selection_handler,
- NULL );
- break;
- default:
- break;
- }
+ return TRUE;
}
-bool wxClipboard::IsSupportedFormat( wxDataFormat format )
+bool wxClipboard::SetData( wxDataObject *data )
{
- m_targetRequested = 0;
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
- if (format == wxDF_TEXT)
- {
-// m_targetRequested = g_textAtom;
- m_targetRequested = GDK_TARGET_STRING;
- }
+ wxCHECK_MSG( data, FALSE, _T("data is invalid") );
- if (m_targetRequested == 0) return FALSE;
+ Clear();
+
+ return AddData( data );
+}
- gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
- "selection_received",
- GTK_SIGNAL_FUNC( targets_selection_received ),
- (gpointer) this );
+bool wxClipboard::AddData( wxDataObject *data )
+{
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
+
+ wxCHECK_MSG( data, FALSE, _T("data is invalid") );
+
+ /* if clipboard has been cleared before, create new data broker */
- m_formatSupported = FALSE;
+ if (!m_dataBroker) m_dataBroker = new wxDataBroker();
- gtk_selection_convert( m_clipboardWidget,
- g_clipboardAtom,
- g_targetsAtom,
- GDK_CURRENT_TIME );
-
- gtk_signal_disconnect_by_func( GTK_OBJECT(m_clipboardWidget),
- GTK_SIGNAL_FUNC( targets_selection_received ),
- (gpointer) this );
+ /* add new data to list of offered data objects */
- if (!m_formatSupported) return FALSE;
+ m_dataBroker->Add( data );
+
+ /* get native format id of new data object */
+
+ GdkAtom format = data->GetFormat().GetAtom();
+
+ wxCHECK_MSG( format, FALSE, _T("data has invalid format") );
+
+ /* This should happen automatically, but to be on the safe side */
+
+ m_ownsClipboard = FALSE;
+ m_ownsPrimarySelection = FALSE;
+
+ /* Add handlers if someone requests data */
+
+
+#if (GTK_MINOR_VERSION > 0)
+
+ gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
+ GDK_SELECTION_PRIMARY,
+ format,
+ 0 ); /* what is info ? */
+
+ gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
+ g_clipboardAtom,
+ format,
+ 0 ); /* what is info ? */
+
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+ "selection_get",
+ GTK_SIGNAL_FUNC(selection_handler),
+ (gpointer) NULL );
+
+#else
+
+ gtk_selection_add_handler( m_clipboardWidget,
+ g_clipboardAtom,
+ format,
+ selection_handler,
+ (gpointer) NULL );
+
+ gtk_selection_add_handler( m_clipboardWidget,
+ GDK_SELECTION_PRIMARY,
+ format,
+ selection_handler,
+ (gpointer) NULL );
+#endif
+
+ /* Tell the world we offer clipboard data */
- return TRUE;
+ if (!gtk_selection_owner_set( m_clipboardWidget,
+ g_clipboardAtom,
+ GDK_CURRENT_TIME ))
+ {
+ return FALSE;
+ }
+ m_ownsClipboard = TRUE;
+
+ if (!gtk_selection_owner_set( m_clipboardWidget,
+ GDK_SELECTION_PRIMARY,
+ GDK_CURRENT_TIME ))
+ {
+ return FALSE;
+ }
+ m_ownsPrimarySelection = TRUE;
+
+ return TRUE;
}
-bool wxClipboard::ObtainData( wxDataFormat format )
+void wxClipboard::Close()
{
- m_receivedSize = 0;
-
- if (m_receivedData)
- {
- delete[] m_receivedData;
- m_receivedData = (char*) NULL;
- }
-
- m_targetRequested = 0;
+ wxCHECK_RET( m_open, _T("clipboard not open") );
+
+ m_open = FALSE;
+}
+
+bool wxClipboard::IsSupported( wxDataFormat format )
+{
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
+
+ /* store requested format to be asked for by callbacks */
+
+ m_targetRequested = format.GetAtom();
- if (format == wxDF_TEXT)
- {
-// m_targetRequested = g_textAtom;
- m_targetRequested = GDK_TARGET_STRING;
- }
+ wxCHECK_MSG( m_targetRequested, FALSE, _T("invalid clipboard format") );
+
+ m_formatSupported = FALSE;
- if (m_targetRequested == 0) return FALSE;
+ /* perform query. this will set m_formatSupported to
+ TRUE if m_targetRequested is supported.
+ alsom we have to wait for the "answer" from the
+ clipboard owner which is an asynchronous process.
+ therefore we set m_waiting = TRUE here and wait
+ until the callback "targets_selection_received"
+ sets it to FALSE */
- gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
- "selection_received",
- GTK_SIGNAL_FUNC( selection_received ),
- (gpointer) this );
+ m_waiting = TRUE;
- gtk_selection_convert( m_clipboardWidget,
- g_clipboardAtom,
- m_targetRequested,
- GDK_CURRENT_TIME );
+ gtk_selection_convert( m_targetsWidget,
+ g_clipboardAtom,
+ g_targetsAtom,
+ GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+
+ if (!m_formatSupported) return FALSE;
+
+ return TRUE;
+}
+
+bool wxClipboard::GetData( wxDataObject *data )
+{
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
+
+ /* is data supported by clipboard ? */
+
+ if (!IsSupported( data->GetFormat() )) return FALSE;
+
+ /* store pointer to data object to be filled up by callbacks */
+
+ m_receivedData = data;
+
+ /* store requested format to be asked for by callbacks */
+
+ m_targetRequested = data->GetFormat().GetAtom();
- gtk_signal_disconnect_by_func( GTK_OBJECT(m_clipboardWidget),
- GTK_SIGNAL_FUNC( selection_received ),
- (gpointer) this );
+ wxCHECK_MSG( m_targetRequested, FALSE, _T("invalid clipboard format") );
- if (m_receivedSize == 0) return FALSE;
+ /* start query */
+
+ m_formatSupported = FALSE;
- return TRUE;
-}
+ /* ask for clipboard contents. this will set
+ m_formatSupported to TRUE if m_targetRequested
+ is supported.
+ also, we have to wait for the "answer" from the
+ clipboard owner which is an asynchronous process.
+ therefore we set m_waiting = TRUE here and wait
+ until the callback "targets_selection_received"
+ sets it to FALSE */
-size_t wxClipboard::GetDataSize() const
-{
- return m_receivedSize;
-}
+ m_waiting = TRUE;
-void wxClipboard::GetDataHere( void *data ) const
-{
- memcpy(data, m_receivedData, m_receivedSize );
+ gtk_selection_convert( m_clipboardWidget,
+ g_clipboardAtom,
+ m_targetRequested,
+ GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+
+ /* this is a true error as we checked for the presence of such data before */
+
+ wxCHECK_MSG( m_formatSupported, FALSE, _T("error retrieving data from clipboard") );
+
+ return TRUE;
}
//-----------------------------------------------------------------------------
bool wxClipboardModule::OnInit()
{
- wxTheClipboard = new wxClipboard();
+ wxTheClipboard = new wxClipboard();
- return TRUE;
+ return TRUE;
}
void wxClipboardModule::OnExit()
{
- if (wxTheClipboard) delete wxTheClipboard;
- wxTheClipboard = (wxClipboard*) NULL;
+ if (wxTheClipboard) delete wxTheClipboard;
+ wxTheClipboard = (wxClipboard*) NULL;
}
+
+#endif
+
+ // wxUSE_CLIPBOARD
+
projects / wxWidgets.git / blobdiff