X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/19d89516ddcaefc55172cb8b5eaa1306eae599f4..eea4d01c65f9b29baa1193db762b4c6b8144af24:/src/gtk1/clipbrd.cpp?ds=inline diff --git a/src/gtk1/clipbrd.cpp b/src/gtk1/clipbrd.cpp index dc4bbe9c90..2c5b0ff885 100644 --- a/src/gtk1/clipbrd.cpp +++ b/src/gtk1/clipbrd.cpp @@ -1,43 +1,41 @@ ///////////////////////////////////////////////////////////////////////////// -// 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 +#include +#include + //----------------------------------------------------------------------------- // 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 @@ -57,9 +55,9 @@ struct _GtkSelectionData GdkAtom selection; GdkAtom target; GdkAtom type; - gint format; + gint format; guchar *data; - gint length; + gint length; }; */ @@ -68,42 +66,36 @@ struct _GtkSelectionData // "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; @@ -112,37 +104,41 @@ targets_selection_received( GtkWidget *WXUNUSED(widget), { 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; } @@ -150,43 +146,48 @@ 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; } 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 ) { @@ -194,16 +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; } @@ -213,27 +214,28 @@ selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event ) /* 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, guint WXUNUSED(info), guint WXUNUSED(time), - gpointer WXUNUSED(data) ) + gpointer signal_data ) { if (!wxTheClipboard) return; @@ -241,47 +243,55 @@ selection_handler( GtkWidget *WXUNUSED(widget), 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); +} } //----------------------------------------------------------------------------- @@ -292,13 +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 */ @@ -327,11 +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() @@ -348,16 +358,15 @@ void wxClipboard::Clear() { #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(); @@ -365,44 +374,39 @@ 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 */ - 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(); @@ -411,27 +415,37 @@ 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 */ + // 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, @@ -444,11 +458,10 @@ 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 */ - wxapp_uninstall_thread_wakeup(); #endif /* Tell the world we offer clipboard data */ @@ -463,7 +476,6 @@ bool wxClipboard::AddData( wxDataObject *data ) #if wxUSE_THREADS /* re-enable GUI threads */ - wxapp_install_thread_wakeup(); #endif return res; @@ -473,7 +485,7 @@ void wxClipboard::Close() { wxCHECK_RET( m_open, wxT("clipboard not open") ); - m_open = FALSE; + m_open = false; } bool wxClipboard::IsOpened() const @@ -484,24 +496,28 @@ 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 @@ -511,14 +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() ]; @@ -528,26 +542,28 @@ bool wxClipboard::GetData( wxDataObject& data ) { 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 @@ -565,23 +581,24 @@ 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; - 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 @@ -591,21 +608,38 @@ 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; } - 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 -