X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ca11abde117b55a0054588fcf138234f8172b98d..9ef101cd5548aacc4d921683d185b687cb7a6d35:/src/gtk1/clipbrd.cpp diff --git a/src/gtk1/clipbrd.cpp b/src/gtk1/clipbrd.cpp index 251709b69e..2c5b0ff885 100644 --- a/src/gtk1/clipbrd.cpp +++ b/src/gtk1/clipbrd.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: gtk/clipbrd.cpp +// Name: src/gtk1/clipbrd.cpp // Purpose: // Author: Robert Roebling // Id: $Id$ @@ -7,40 +7,35 @@ // 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 "wx/clipbrd.h" + +#ifndef WX_PRECOMP + #include "wx/log.h" + #include "wx/utils.h" + #include "wx/dataobj.h" +#endif #include #include #include -//----------------------------------------------------------------------------- -// thread system -//----------------------------------------------------------------------------- - -#if wxUSE_THREADS -#endif - //----------------------------------------------------------------------------- // 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!) -static const wxChar *TRACE_CLIPBOARD = _T("clipboard"); +#define TRACE_CLIPBOARD "clipboard" //----------------------------------------------------------------------------- // reminder @@ -71,6 +66,7 @@ struct _GtkSelectionData // "selection_received" for targets //----------------------------------------------------------------------------- +extern "C" { static void targets_selection_received( GtkWidget *WXUNUSED(widget), GtkSelectionData *selection_data, @@ -83,22 +79,23 @@ targets_selection_received( GtkWidget *WXUNUSED(widget), GdkAtom type = selection_data->type; if ( type != GDK_SELECTION_TYPE_ATOM ) { - if ( strcmp(gdk_atom_name(type), "TARGETS") ) + gchar* atom_name = gdk_atom_name(type); + if ( strcmp(atom_name, "TARGETS") ) { wxLogTrace( TRACE_CLIPBOARD, - _T("got unsupported clipboard target") ); + wxT("got unsupported clipboard target") ); - clipboard->m_waiting = FALSE; + clipboard->m_waiting = false; + g_free(atom_name); return; } + g_free(atom_name); } -#ifdef __WXDEBUG__ wxDataFormat clip( selection_data->selection ); wxLogTrace( TRACE_CLIPBOARD, wxT("selection received for targets, clipboard %s"), clip.GetId().c_str() ); -#endif // __WXDEBUG__ // the atoms we received, holding a list of targets (= formats) GdkAtom *atoms = (GdkAtom *)selection_data->data; @@ -111,26 +108,28 @@ targets_selection_received( GtkWidget *WXUNUSED(widget), 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 ) ); 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, @@ -139,7 +138,7 @@ selection_received( GtkWidget *WXUNUSED(widget), { if (!wxTheClipboard) { - clipboard->m_waiting = FALSE; + clipboard->m_waiting = false; return; } @@ -147,13 +146,13 @@ selection_received( GtkWidget *WXUNUSED(widget), 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; } @@ -162,28 +161,33 @@ selection_received( GtkWidget *WXUNUSED(widget), // 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 ) { @@ -191,16 +195,16 @@ 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; } @@ -212,25 +216,26 @@ selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event ) { 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, guint WXUNUSED(info), guint WXUNUSED(time), - gpointer WXUNUSED(data) ) + gpointer signal_data ) { if (!wxTheClipboard) return; @@ -238,8 +243,35 @@ selection_handler( GtkWidget *WXUNUSED(widget), 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) + { + 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 ); @@ -252,14 +284,15 @@ selection_handler( GtkWidget *WXUNUSED(widget), 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 @@ -269,13 +302,14 @@ IMPLEMENT_DYNAMIC_CLASS(wxClipboard,wxObject) 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 */ @@ -304,11 +338,10 @@ wxClipboard::wxClipboard() 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() @@ -331,9 +364,9 @@ void wxClipboard::Clear() // 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(); @@ -341,19 +374,15 @@ void wxClipboard::Clear() 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 */ @@ -361,23 +390,23 @@ void wxClipboard::Clear() } 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(); @@ -386,9 +415,9 @@ bool wxClipboard::SetData( wxDataObject *data ) 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 Clear(); @@ -403,6 +432,11 @@ bool wxClipboard::AddData( wxDataObject *data ) 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++) { @@ -410,9 +444,9 @@ bool wxClipboard::AddData( wxDataObject *data ) 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() ) ); - + gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget), clipboard, array[i], @@ -424,7 +458,7 @@ bool wxClipboard::AddData( wxDataObject *data ) 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 */ @@ -451,7 +485,7 @@ void wxClipboard::Close() { wxCHECK_RET( m_open, wxT("clipboard not open") ); - m_open = FALSE; + m_open = false; } bool wxClipboard::IsOpened() const @@ -462,30 +496,28 @@ bool wxClipboard::IsOpened() const bool wxClipboard::IsSupported( const wxDataFormat& format ) { /* reentrance problems */ - if (m_waiting) return FALSE; + if (m_waiting) return false; /* 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() ); -#endif - 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 @@ -495,14 +527,12 @@ bool wxClipboard::IsSupported( const wxDataFormat& format ) 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() ]; @@ -521,19 +551,19 @@ bool wxClipboard::GetData( wxDataObject& 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") ); - 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 @@ -551,21 +581,21 @@ bool wxClipboard::GetData( wxDataObject& 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; + 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; wxLogTrace( TRACE_CLIPBOARD, wxT("wxClipboard::GetData: format found, start convert") ); @@ -578,12 +608,29 @@ bool wxClipboard::GetData( wxDataObject& data ) 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, @@ -591,9 +638,8 @@ bool wxClipboard::GetData( wxDataObject& data ) /* return failure */ delete[] array; - return FALSE; + return false; } #endif // wxUSE_CLIPBOARD -