/////////////////////////////////////////////////////////////////////////////
-// 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
//-----------------------------------------------------------------------------
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
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)
guint32 WXUNUSED(time),
-#endif
wxClipboard *clipboard )
{
if ( wxTheClipboard && selection_data->length > 0 )
{
- /* make sure we got the data in the correct form */
-
- // VZ: I don't know what does this mean (and GTK+ authors apparently
- // don't know either, Owen Taylor writes that "Motif seems to ask
- // for TARGETS atom sometimes" (??)), but it seems that xterm
- // (which is not a Motif app AFAIK) does this too, so it's
- // absolutely essential to support this, otherwise we can't paste
- // text from xterm!
+ // make sure we got the data in the correct form
GdkAtom type = selection_data->type;
if ( type != GDK_SELECTION_TYPE_ATOM )
{
- if ( strcmp(gdk_atom_name(type), "TARGETS") != 0 )
+ gchar* atom_name = gdk_atom_name(type);
+ if ( strcmp(atom_name, "TARGETS") )
{
- // don't know what this is
- clipboard->m_waiting = FALSE;
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("got unsupported clipboard target") );
+
+ clipboard->m_waiting = false;
+ g_free(atom_name);
return;
}
- //else: don't know what this is, but it seems to work in the same
- // way as GDK_SELECTION_TYPE_ATOM does
+ g_free(atom_name);
}
- //else: the data is the list of formats supported by the selection
- /*
wxDataFormat clip( selection_data->selection );
- wxLogDebug( wxT("selection received for targets, clipboard %s"), clip.GetId().c_str() );
- */
+ 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;
{
wxDataFormat format( atoms[i] );
- /*
- wxLogDebug( wxT("selection received for targets, format %s"), format.GetId().c_str() );
- */
+ 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;
+ clipboard->m_waiting = false;
+ clipboard->m_formatSupported = true;
return;
}
}
}
- clipboard->m_waiting = FALSE;
+ clipboard->m_waiting = false;
+}
}
//-----------------------------------------------------------------------------
// "selection_received" for the actual data
//-----------------------------------------------------------------------------
+extern "C" {
static void
selection_received( GtkWidget *WXUNUSED(widget),
GtkSelectionData *selection_data,
-#if (GTK_MINOR_VERSION > 0)
guint32 WXUNUSED(time),
-#endif
wxClipboard *clipboard )
{
if (!wxTheClipboard)
{
- clipboard->m_waiting = FALSE;
+ clipboard->m_waiting = false;
return;
}
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 (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;
}
/* the clipboard is no longer in our hands. we can the delete clipboard data. */
if (wxTheClipboard->m_data)
{
- wxLogDebug( wxT("wxClipboard will get cleared" ) );
+ wxLogTrace(TRACE_CLIPBOARD, wxT("wxClipboard will get cleared" ));
- delete wxTheClipboard->m_data;
- wxTheClipboard->m_data = (wxDataObject*) NULL;
+ 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;
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];
+ void *d = malloc(size);
- data->GetDataHere( selection_data->target, (void*) 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 );
+ 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 */
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_formatSupported = false;
m_targetRequested = 0;
-
- m_usePrimary = FALSE;
}
wxClipboard::~wxClipboard()
{
#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;
+ m_waiting = true;
- gtk_selection_owner_set( (GtkWidget*) NULL, g_clipboardAtom,
+ 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;
+ m_waiting = true;
- gtk_selection_owner_set( (GtkWidget*) NULL, GDK_SELECTION_PRIMARY,
+ 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") );
+ wxCHECK_MSG( !m_open, false, wxT("clipboard already open") );
- m_open = TRUE;
+ m_open = true;
- return TRUE;
+ return true;
}
bool wxClipboard::SetData( wxDataObject *data )
{
- wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") );
+ wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
- wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
+ wxCHECK_MSG( data, false, wxT("data is invalid") );
Clear();
bool wxClipboard::AddData( wxDataObject *data )
{
- wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") );
+ wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
- wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
+ wxCHECK_MSG( data, false, wxT("data is invalid") );
- /* we can only store one wxDataObject */
+ // we can only store one wxDataObject
Clear();
m_data = data;
- /* get formats from wxDataObjects */
+ // get formats from wxDataObjects
wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
m_data->GetAllFormats( array );
- /* primary selection or clipboard */
+ // 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++)
{
- wxLogDebug( wxT("wxClipboard now supports atom %s"), array[i].GetId().c_str() );
+ 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,
gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
"selection_get",
GTK_SIGNAL_FUNC(selection_handler),
- (gpointer) NULL );
+ GUINT_TO_POINTER( gdk_event_get_time(gtk_get_current_event()) ) );
#if wxUSE_THREADS
/* disable GUI threads */
- wxapp_uninstall_thread_wakeup();
#endif
/* Tell the world we offer clipboard data */
#if wxUSE_THREADS
/* re-enable GUI threads */
- wxapp_install_thread_wakeup();
#endif
return res;
{
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") );
+ 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;
+ m_formatSupported = false;
/* perform query. this will set m_formatSupported to
- TRUE if m_targetRequested is supported.
+ 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
+ therefore we set m_waiting = true here and wait
until the callback "targets_selection_received"
- sets it to FALSE */
+ sets it to false */
- m_waiting = TRUE;
+ m_waiting = true;
gtk_selection_convert( m_targetsWidget,
m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
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() ];
{
wxDataFormat format( array[i] );
- wxLogDebug( wxT("wxClipboard::GetData: requested format: %s"), format.GetId().c_str() );
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: requested format: %s"),
+ format.GetId().c_str() );
/* is data supported by clipboard ? */
/* 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") );
- m_formatSupported = FALSE;
+ m_formatSupported = false;
/* perform query. this will set m_formatSupported to
- TRUE if m_targetRequested is supported.
+ 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
+ therefore we set m_waiting = true here and wait
until the callback "targets_selection_received"
- sets it to FALSE */
+ sets it to false */
- m_waiting = TRUE;
+ m_waiting = true;
gtk_selection_convert( m_targetsWidget,
m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
/* 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;
+ m_formatSupported = false;
/* ask for clipboard contents. this will set
- m_formatSupported to TRUE if m_targetRequested
+ 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
+ therefore we set m_waiting = true here and wait
until the callback "targets_selection_received"
- sets it to FALSE */
+ sets it to false */
- m_waiting = TRUE;
+ m_waiting = true;
- wxLogDebug( wxT("wxClipboard::GetData: format found, start convert") );
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: format found, start convert") );
gtk_selection_convert( m_clipboardWidget,
m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
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;
}
- wxLogDebug( wxT("wxClipboard::GetData: format not found") );
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: format not found") );
/* return failure */
delete[] array;
- return FALSE;
+ return false;
}
#endif
// wxUSE_CLIPBOARD
-
projects / wxWidgets.git / blobdiff