/////////////////////////////////////////////////////////////////////////////
-// Name: clipbrd.cpp
+// Name: src/gtk1/clipbrd.cpp
// Purpose:
// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
-// Licence: wxWindows licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "clipbrd.h"
-#endif
-
-#include "wx/clipbrd.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
#if wxUSE_CLIPBOARD
-#include "wx/dataobj.h"
-#include "wx/utils.h"
-#include "wx/log.h"
-
-#include "glib.h"
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
-
-//-----------------------------------------------------------------------------
-// thread system
-//-----------------------------------------------------------------------------
+#include "wx/clipbrd.h"
-#if wxUSE_THREADS
-extern void wxapp_install_thread_wakeup();
-extern void wxapp_uninstall_thread_wakeup();
+#ifndef WX_PRECOMP
+ #include "wx/log.h"
+ #include "wx/utils.h"
+ #include "wx/dataobj.h"
#endif
+#include <glib.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
-wxClipboard *wxTheClipboard = (wxClipboard*) NULL;
-
GdkAtom g_clipboardAtom = 0;
GdkAtom g_targetsAtom = 0;
+GdkAtom g_timestampAtom = 0;
+
+// the trace mask we use with wxLogTrace() - call
+// wxLog::AddTraceMask(TRACE_CLIPBOARD) to enable the trace messages from here
+// (there will be a *lot* of them!)
+#define TRACE_CLIPBOARD "clipboard"
//-----------------------------------------------------------------------------
// reminder
//-----------------------------------------------------------------------------
/* The contents of a selection are returned in a GtkSelectionData
- structure. selection/target identify the request.
+ structure. selection/target identify the request.
type specifies the type of the return; if length < 0, and
the data should be ignored. This structure has object semantics -
no fields should be modified directly, they should not be created
GdkAtom selection;
GdkAtom target;
GdkAtom type;
- gint format;
+ gint format;
guchar *data;
- gint length;
+ gint length;
};
*/
// "selection_received" for targets
//-----------------------------------------------------------------------------
+extern "C" {
static void
-targets_selection_received( GtkWidget *WXUNUSED(widget),
- GtkSelectionData *selection_data,
-#if (GTK_MINOR_VERSION > 0)
+targets_selection_received( GtkWidget *WXUNUSED(widget),
+ GtkSelectionData *selection_data,
guint32 WXUNUSED(time),
-#endif
wxClipboard *clipboard )
{
- if (!wxTheClipboard)
- {
- clipboard->m_waiting = FALSE;
- return;
- }
-
- if (selection_data->length <= 0)
+ if ( wxTheClipboard && 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;
+ // make sure we got the data in the correct form
+ GdkAtom type = selection_data->type;
+ if ( type != GDK_SELECTION_TYPE_ATOM )
+ {
+ gchar* atom_name = gdk_atom_name(type);
+ if ( strcmp(atom_name, "TARGETS") )
+ {
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("got unsupported clipboard target") );
+
+ clipboard->m_waiting = false;
+ g_free(atom_name);
+ return;
+ }
+ g_free(atom_name);
+ }
- for (unsigned int i=0; i<selection_data->length/sizeof(GdkAtom); i++)
- {
- wxDataFormat format( atoms[i] );
-
- if (format == clipboard->m_targetRequested)
+ wxDataFormat clip( selection_data->selection );
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("selection received for targets, clipboard %s"),
+ clip.GetId().c_str() );
+
+ // 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++)
{
- clipboard->m_waiting = FALSE;
- clipboard->m_formatSupported = TRUE;
- return;
+ wxDataFormat format( atoms[i] );
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("selection received for targets, format %s"),
+ format.GetId().c_str() );
+
+// printf( "format %s requested %s\n",
+// gdk_atom_name( atoms[i] ),
+// gdk_atom_name( clipboard->m_targetRequested ) );
+
+ if (format == clipboard->m_targetRequested)
+ {
+ clipboard->m_waiting = false;
+ clipboard->m_formatSupported = true;
+ return;
+ }
}
}
- clipboard->m_waiting = FALSE;
- return;
+ clipboard->m_waiting = false;
+}
}
//-----------------------------------------------------------------------------
// "selection_received" for the actual data
//-----------------------------------------------------------------------------
-static void
-selection_received( GtkWidget *WXUNUSED(widget),
- GtkSelectionData *selection_data,
-#if (GTK_MINOR_VERSION > 0)
+extern "C" {
+static void
+selection_received( GtkWidget *WXUNUSED(widget),
+ GtkSelectionData *selection_data,
guint32 WXUNUSED(time),
-#endif
wxClipboard *clipboard )
{
if (!wxTheClipboard)
{
- clipboard->m_waiting = FALSE;
+ clipboard->m_waiting = false;
return;
}
-
+
wxDataObject *data_object = clipboard->m_receivedData;
if (!data_object)
{
- clipboard->m_waiting = FALSE;
+ clipboard->m_waiting = false;
return;
}
-
+
if (selection_data->length <= 0)
{
- clipboard->m_waiting = FALSE;
+ clipboard->m_waiting = false;
return;
}
-
+
wxDataFormat format( selection_data->target );
-
- /* make sure we got the data in the correct format */
+
+ // make sure we got the data in the correct format
if (!data_object->IsSupportedFormat( format ) )
{
- clipboard->m_waiting = FALSE;
+ clipboard->m_waiting = false;
return;
}
- /* make sure we got the data in the correct form (selection type).
- if so, copy data to target object */
+#if 0
+ This seems to cause problems somehow
+ // make sure we got the data in the correct form (selection type).
+ // if so, copy data to target object
if (selection_data->type != GDK_SELECTION_TYPE_STRING)
{
- clipboard->m_waiting = FALSE;
+ clipboard->m_waiting = false;
return;
}
-
+#endif
+
data_object->SetData( format, (size_t) selection_data->length, (const char*) selection_data->data );
-
- wxTheClipboard->m_formatSupported = TRUE;
- clipboard->m_waiting = FALSE;
+
+ wxTheClipboard->m_formatSupported = true;
+ clipboard->m_waiting = false;
+}
}
//-----------------------------------------------------------------------------
// "selection_clear"
//-----------------------------------------------------------------------------
+extern "C" {
static gint
selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event )
{
if (!wxTheClipboard) return TRUE;
-
+
if (event->selection == GDK_SELECTION_PRIMARY)
{
- wxTheClipboard->m_ownsPrimarySelection = FALSE;
+ wxTheClipboard->m_ownsPrimarySelection = false;
}
else
if (event->selection == g_clipboardAtom)
{
- wxTheClipboard->m_ownsClipboard = FALSE;
+ wxTheClipboard->m_ownsClipboard = false;
}
else
{
- wxTheClipboard->m_waiting = FALSE;
+ wxTheClipboard->m_waiting = false;
return FALSE;
}
-
+
if ((!wxTheClipboard->m_ownsPrimarySelection) &&
(!wxTheClipboard->m_ownsClipboard))
{
/* the clipboard is no longer in our hands. we can the delete clipboard data. */
if (wxTheClipboard->m_data)
{
- delete wxTheClipboard->m_data;
- wxTheClipboard->m_data = (wxDataObject*) NULL;
+ wxLogTrace(TRACE_CLIPBOARD, wxT("wxClipboard will get cleared" ));
+
+ wxDELETE(wxTheClipboard->m_data);
}
}
-
- wxTheClipboard->m_waiting = FALSE;
+
+ wxTheClipboard->m_waiting = false;
return TRUE;
}
+}
//-----------------------------------------------------------------------------
// selection handler for supplying data
//-----------------------------------------------------------------------------
+extern "C" {
static void
-selection_handler( GtkWidget *WXUNUSED(widget), GtkSelectionData *selection_data, gpointer WXUNUSED(data) )
+selection_handler( GtkWidget *WXUNUSED(widget),
+ GtkSelectionData *selection_data,
+ guint WXUNUSED(info),
+ guint WXUNUSED(time),
+ gpointer signal_data )
{
if (!wxTheClipboard) return;
-
+
if (!wxTheClipboard->m_data) return;
-
+
wxDataObject *data = wxTheClipboard->m_data;
-
- wxDataFormat format( selection_data->target );
- if (!data->IsSupportedFormat( format )) return;
-
- /* this will fail for composite formats */
- if (format.GetType() == wxDF_TEXT)
+ // 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)
{
- wxTextDataObject *text_object = (wxTextDataObject*) data;
- 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 );
-
+ guint timestamp = GPOINTER_TO_UINT (signal_data);
+ gtk_selection_data_set(selection_data,
+ GDK_SELECTION_TYPE_INTEGER,
+ 32,
+ (guchar*)&(timestamp),
+ sizeof(timestamp));
+ wxLogTrace(TRACE_CLIPBOARD,
+ wxT("Clipboard TIMESTAMP requested, returning timestamp=%u"),
+ timestamp);
return;
}
+ wxDataFormat format( selection_data->target );
+
+ wxLogTrace(TRACE_CLIPBOARD,
+ wxT("clipboard data in format %s, GtkSelectionData is target=%s type=%s selection=%s timestamp=%u"),
+ format.GetId().c_str(),
+ wxString::FromAscii(gdk_atom_name(selection_data->target)).c_str(),
+ wxString::FromAscii(gdk_atom_name(selection_data->type)).c_str(),
+ wxString::FromAscii(gdk_atom_name(selection_data->selection)).c_str(),
+ GPOINTER_TO_UINT( signal_data )
+ );
+
+ if (!data->IsSupportedFormat( format )) return;
+
int size = data->GetDataSize( format );
-
+
if (size == 0) return;
-
- char *d = new char[size];
-
- data->GetDataHere( selection_data->target, (void*) d );
-
- gtk_selection_data_set(
- selection_data,
- GDK_SELECTION_TYPE_STRING,
- 8*sizeof(gchar),
- (unsigned char*) d,
- size );
+
+ void *d = malloc(size);
+
+ // 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 );
+
+ free(d);
+}
}
//-----------------------------------------------------------------------------
wxClipboard::wxClipboard()
{
- m_open = FALSE;
+ m_open = false;
+ m_waiting = false;
- m_ownsClipboard = FALSE;
- m_ownsPrimarySelection = FALSE;
+ m_ownsClipboard = false;
+ m_ownsPrimarySelection = false;
- m_data = (wxDataObject*) NULL;
- m_receivedData = (wxDataObject*) NULL;
+ m_data = NULL;
+ m_receivedData = 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),
+ gtk_signal_connect( GTK_OBJECT(m_targetsWidget),
"selection_received",
- GTK_SIGNAL_FUNC( targets_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),
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
"selection_received",
- GTK_SIGNAL_FUNC( selection_received ),
+ GTK_SIGNAL_FUNC( selection_received ),
(gpointer) this );
- gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
"selection_clear_event",
- GTK_SIGNAL_FUNC( selection_clear_clip ),
+ GTK_SIGNAL_FUNC( selection_clear_clip ),
(gpointer) NULL );
-
+
if (!g_clipboardAtom) g_clipboardAtom = gdk_atom_intern( "CLIPBOARD", FALSE );
if (!g_targetsAtom) g_targetsAtom = gdk_atom_intern ("TARGETS", FALSE);
-
- m_formatSupported = FALSE;
+ if (!g_timestampAtom) g_timestampAtom = gdk_atom_intern ("TIMESTAMP", FALSE);
+
+ m_formatSupported = false;
m_targetRequested = 0;
-
- m_usePrimary = FALSE;
}
wxClipboard::~wxClipboard()
{
- Clear();
-
+ Clear();
+
if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
if (m_targetsWidget) gtk_widget_destroy( m_targetsWidget );
}
{
#if wxUSE_THREADS
/* disable GUI threads */
- wxapp_uninstall_thread_wakeup();
#endif
-
- /* 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 */
+
+ // 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 (gdk_selection_owner_get( g_clipboardAtom ) == m_clipboardWidget->window)
{
- m_waiting = TRUE;
-
- gtk_selection_owner_set( (GtkWidget*) NULL, g_clipboardAtom, GDK_CURRENT_TIME );
-
+ m_waiting = true;
+
+ gtk_selection_owner_set( NULL, g_clipboardAtom,
+ (guint32) GDK_CURRENT_TIME );
+
while (m_waiting) gtk_main_iteration();
}
-
+
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 );
-
+ m_waiting = true;
+
+ gtk_selection_owner_set( NULL, GDK_SELECTION_PRIMARY,
+ (guint32) GDK_CURRENT_TIME );
+
while (m_waiting) gtk_main_iteration();
}
-
- if (m_data)
- {
- delete m_data;
- m_data = (wxDataObject*) NULL;
- }
-
+
+ wxDELETE(m_data);
+
#if wxUSE_THREADS
/* re-enable GUI threads */
- wxapp_install_thread_wakeup();
#endif
}
-
+
m_targetRequested = 0;
- m_formatSupported = FALSE;
+ m_formatSupported = false;
}
bool wxClipboard::Open()
{
- wxCHECK_MSG( !m_open, FALSE, wxT("clipboard already open") );
-
- m_open = TRUE;
-
- return TRUE;
+ wxCHECK_MSG( !m_open, false, wxT("clipboard already open") );
+
+ m_open = true;
+
+ return true;
}
bool wxClipboard::SetData( wxDataObject *data )
{
- wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") );
-
- wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
-
+ wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
+
+ wxCHECK_MSG( data, false, wxT("data is invalid") );
+
Clear();
return AddData( data );
bool wxClipboard::AddData( wxDataObject *data )
{
- wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") );
-
- wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
-
- /* we can only store one wxDataObject */
+ wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
+
+ wxCHECK_MSG( data, false, wxT("data is invalid") );
+
+ // we can only store one wxDataObject
Clear();
-
+
m_data = data;
- /* This should happen automatically, but to be on the safe side */
- m_ownsClipboard = FALSE;
- m_ownsPrimarySelection = FALSE;
-
- /* get formats from wxDataObjects */
+ // get formats from wxDataObjects
wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
m_data->GetAllFormats( array );
-
+
+ // primary selection or clipboard
+ 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++)
{
- GdkAtom atom = array[i];
- wxLogDebug( wxT("Clipboard Supported atom %s"), gdk_atom_name( atom ) );
-
- /* Add handlers if someone requests data. We currently always
- offer data to the clipboard and the primary selection. Maybe
- we should make that depend on the usePrimary flag */
-
- gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
- GDK_SELECTION_PRIMARY,
- atom,
- 0 ); /* what is info ? */
-
- gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
- g_clipboardAtom,
- atom,
- 0 ); /* what is info ? */
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard now supports atom %s"),
+ array[i].GetId().c_str() );
+
+// printf( "added %s\n",
+// gdk_atom_name( array[i].GetFormatId() ) );
+
+ gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
+ clipboard,
+ array[i],
+ 0 ); /* what is info ? */
}
delete[] array;
-
- gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
"selection_get",
- GTK_SIGNAL_FUNC(selection_handler),
- (gpointer) NULL );
+ GTK_SIGNAL_FUNC(selection_handler),
+ GUINT_TO_POINTER( gdk_event_get_time(gtk_get_current_event()) ) );
#if wxUSE_THREADS
- /* disable GUI threads */
- wxapp_uninstall_thread_wakeup();
+ /* disable GUI threads */
#endif
-
+
/* Tell the world we offer clipboard data */
- if (!gtk_selection_owner_set( m_clipboardWidget,
- g_clipboardAtom,
- GDK_CURRENT_TIME ))
- {
-#if wxUSE_THREADS
- /* re-enable GUI threads */
- wxapp_install_thread_wakeup();
-#endif
- return FALSE;
- }
- m_ownsClipboard = TRUE;
-
- if (!gtk_selection_owner_set( m_clipboardWidget,
- GDK_SELECTION_PRIMARY,
- GDK_CURRENT_TIME ))
- {
-#if wxUSE_THREADS
- /* re-enable GUI threads */
- wxapp_install_thread_wakeup();
-#endif
- return FALSE;
- }
- m_ownsPrimarySelection = TRUE;
-
+ bool res = (gtk_selection_owner_set( m_clipboardWidget,
+ clipboard,
+ (guint32) GDK_CURRENT_TIME ));
+
+ if (m_usePrimary)
+ m_ownsPrimarySelection = res;
+ else
+ m_ownsClipboard = res;
+
#if wxUSE_THREADS
/* re-enable GUI threads */
- wxapp_install_thread_wakeup();
#endif
-
- return TRUE;
+
+ return res;
}
void wxClipboard::Close()
{
wxCHECK_RET( m_open, wxT("clipboard not open") );
-
- m_open = FALSE;
+
+ m_open = false;
}
bool wxClipboard::IsOpened() const
bool wxClipboard::IsSupported( const wxDataFormat& format )
{
/* reentrance problems */
- if (m_open) return TRUE;
-
+ if (m_waiting) return false;
+
/* store requested format to be asked for by callbacks */
m_targetRequested = format;
-
- wxCHECK_MSG( m_targetRequested, FALSE, wxT("invalid clipboard format") );
-
- m_formatSupported = 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
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard:IsSupported: requested format: %s"),
+ format.GetId().c_str() );
+
+ wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );
+
+ m_formatSupported = false;
+
+ /* perform query. 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 */
+ therefore we set m_waiting = true here and wait
+ until the callback "targets_selection_received"
+ sets it to false */
- m_waiting = TRUE;
+ m_waiting = true;
gtk_selection_convert( m_targetsWidget,
m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
- : g_clipboardAtom,
+ : g_clipboardAtom,
g_targetsAtom,
- GDK_CURRENT_TIME );
+ (guint32) GDK_CURRENT_TIME );
while (m_waiting) gtk_main_iteration();
-
- if (!m_formatSupported) return FALSE;
-
- return TRUE;
-}
-
+
+ return m_formatSupported;
+}
+
bool wxClipboard::GetData( wxDataObject& data )
{
- wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") );
-
+ wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
+
/* get formats from wxDataObjects */
wxDataFormat *array = new wxDataFormat[ data.GetFormatCount() ];
data.GetAllFormats( array );
-
+
for (size_t i = 0; i < data.GetFormatCount(); i++)
{
wxDataFormat format( array[i] );
-
- wxLogDebug( wxT("wxClipboard::GetData: request format %s"), format.GetId().c_str() );
-
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: requested format: %s"),
+ format.GetId().c_str() );
+
/* is data supported by clipboard ? */
- if (!IsSupported( format ))
- continue;
-
+
+ /* store requested format to be asked for by callbacks */
+ m_targetRequested = format;
+
+ wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );
+
+ m_formatSupported = false;
+
+ /* perform query. 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 */
+
+ m_waiting = true;
+
+ gtk_selection_convert( m_targetsWidget,
+ m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
+ : g_clipboardAtom,
+ g_targetsAtom,
+ (guint32) GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+
+ if (!m_formatSupported) continue;
+
/* 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 = format;
-
- wxCHECK_MSG( m_targetRequested, FALSE, wxT("invalid clipboard format") );
-
+
+ wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );
+
/* start query */
- m_formatSupported = FALSE;
-
- /* ask for clipboard contents. this will set
- m_formatSupported to TRUE if m_targetRequested
+ m_formatSupported = false;
+
+ /* 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
+ 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 */
+ therefore we set m_waiting = true here and wait
+ until the callback "targets_selection_received"
+ sets it to false */
- m_waiting = TRUE;
+ m_waiting = true;
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: format found, start convert") );
- wxLogDebug( wxT("wxClipboard::GetData: format found, start convert") );
-
gtk_selection_convert( m_clipboardWidget,
m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
- : g_clipboardAtom,
+ : g_clipboardAtom,
m_targetRequested,
- GDK_CURRENT_TIME );
-
+ (guint32) 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, wxT("error retrieving data from clipboard") );
-
+ /*
+ Normally this is a true error as we checked for the presence of such
+ data before, but there are applications that may return an empty
+ string (e.g. Gnumeric-1.6.1 on Linux if an empty cell is copied)
+ which would produce a false error message here, so we check for the
+ size of the string first. In ansi, GetDataSize returns an extra
+ value (for the closing null?), with unicode, the exact number of
+ tokens is given (that is more than 1 for special characters)
+ (tested with Gnumeric-1.6.1 and OpenOffice.org-2.0.2)
+ */
+#if wxUSE_UNICODE
+ if ( format != wxDF_UNICODETEXT || data.GetDataSize(format) > 0 )
+#else // !UNICODE
+ if ( format != wxDF_TEXT || data.GetDataSize(format) > 1 )
+#endif // UNICODE / !UNICODE
+ {
+ wxCHECK_MSG( m_formatSupported, false,
+ wxT("error retrieving data from clipboard") );
+ }
+
/* return success */
delete[] array;
- return TRUE;
+ return true;
}
-
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: format not found") );
+
/* return failure */
delete[] array;
- return FALSE;
+ return false;
}
#endif
// wxUSE_CLIPBOARD
-
projects / wxWidgets.git / blobdiff