X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e5d6aa2208e2cede142bd2cf703a75cbdff5df92..55703c91786847325c6eca84da92e2834857cfaa:/src/gtk/clipbrd.cpp diff --git a/src/gtk/clipbrd.cpp b/src/gtk/clipbrd.cpp index dc455e90c5..32d0991d3e 100644 --- a/src/gtk/clipbrd.cpp +++ b/src/gtk/clipbrd.cpp @@ -1,10 +1,10 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: clipbrd.cpp +// Name: gtk/clipbrd.cpp // Purpose: // Author: Robert Roebling // Id: $Id$ // Copyright: (c) 1998 Robert Roebling -// Licence: wxWindows licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifdef __GNUG__ @@ -19,9 +19,9 @@ #include "wx/utils.h" #include "wx/log.h" -#include "glib.h" -#include "gdk/gdk.h" -#include "gtk/gtk.h" +#include +#include +#include //----------------------------------------------------------------------------- // thread system @@ -36,17 +36,20 @@ extern void wxapp_uninstall_thread_wakeup(); // data //----------------------------------------------------------------------------- -wxClipboard *wxTheClipboard = (wxClipboard*) NULL; - GdkAtom g_clipboardAtom = 0; GdkAtom g_targetsAtom = 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 char *TRACE_CLIPBOARD = _T("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 @@ -59,9 +62,9 @@ struct _GtkSelectionData GdkAtom selection; GdkAtom target; GdkAtom type; - gint format; + gint format; guchar *data; - gint length; + gint length; }; */ @@ -71,69 +74,77 @@ struct _GtkSelectionData //----------------------------------------------------------------------------- static void -targets_selection_received( GtkWidget *WXUNUSED(widget), - GtkSelectionData *selection_data, +targets_selection_received( GtkWidget *WXUNUSED(widget), + GtkSelectionData *selection_data, #if (GTK_MINOR_VERSION > 0) guint32 WXUNUSED(time), #endif - wxClipboard *clipboard ) + wxClipboard *clipboard ) { - if (!wxTheClipboard) + if ( wxTheClipboard && selection_data->length > 0 ) { - clipboard->m_waiting = FALSE; - 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; + /* 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") ) + { + wxLogTrace( TRACE_CLIPBOARD, + _T("got unsupported clipboard target") ); + + clipboard->m_waiting = FALSE; + return; + } + } - for (unsigned int i=0; ilength/sizeof(GdkAtom); i++) - { - wxDataFormat format( atoms[i] ); - - if (format == clipboard->m_targetRequested) +#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; + + for (unsigned int i=0; ilength/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() ); + + if (format == clipboard->m_targetRequested) + { + clipboard->m_waiting = FALSE; + clipboard->m_formatSupported = TRUE; + return; + } } } clipboard->m_waiting = FALSE; - return; } //----------------------------------------------------------------------------- // "selection_received" for the actual data //----------------------------------------------------------------------------- -static void -selection_received( GtkWidget *WXUNUSED(widget), - GtkSelectionData *selection_data, +static void +selection_received( GtkWidget *WXUNUSED(widget), + GtkSelectionData *selection_data, #if (GTK_MINOR_VERSION > 0) guint32 WXUNUSED(time), #endif - wxClipboard *clipboard ) + wxClipboard *clipboard ) { if (!wxTheClipboard) { clipboard->m_waiting = FALSE; return; } - + wxDataObject *data_object = clipboard->m_receivedData; if (!data_object) @@ -141,15 +152,15 @@ selection_received( GtkWidget *WXUNUSED(widget), clipboard->m_waiting = FALSE; return; } - + if (selection_data->length <= 0) { clipboard->m_waiting = FALSE; return; } - + wxDataFormat format( selection_data->target ); - + /* make sure we got the data in the correct format */ if (!data_object->IsSupportedFormat( format ) ) { @@ -164,9 +175,9 @@ selection_received( GtkWidget *WXUNUSED(widget), clipboard->m_waiting = FALSE; return; } - + data_object->SetData( format, (size_t) selection_data->length, (const char*) selection_data->data ); - + wxTheClipboard->m_formatSupported = TRUE; clipboard->m_waiting = FALSE; } @@ -179,7 +190,7 @@ static gint selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event ) { if (!wxTheClipboard) return TRUE; - + if (event->selection == GDK_SELECTION_PRIMARY) { wxTheClipboard->m_ownsPrimarySelection = FALSE; @@ -194,18 +205,20 @@ selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event ) 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; - } + { + wxLogDebug( wxT("wxClipboard will get cleared" ) ); + + delete wxTheClipboard->m_data; + wxTheClipboard->m_data = (wxDataObject*) NULL; + } } - + wxTheClipboard->m_waiting = FALSE; return TRUE; } @@ -215,55 +228,59 @@ selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event ) //----------------------------------------------------------------------------- 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 WXUNUSED(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) { - wxTextDataObject *text_object = (wxTextDataObject*) data; - wxString text( text_object->GetText() ); + wxTextDataObject *text_object = (wxTextDataObject*) data; + wxString text( text_object->GetText() ); #if wxUSE_UNICODE - const wxWX2MBbuf s = text.mbc_str(); - int len = strlen(s); + 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(); + 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 ); - - return; + gtk_selection_data_set( + selection_data, + GDK_SELECTION_TYPE_STRING, + 8*sizeof(gchar), + (unsigned char*) (const char*) s, + len ); + + 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 ); + gtk_selection_data_set( + selection_data, + GDK_SELECTION_TYPE_STRING, + 8*sizeof(gchar), + (unsigned char*) d, + size ); } //----------------------------------------------------------------------------- @@ -283,43 +300,43 @@ wxClipboard::wxClipboard() 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), + gtk_signal_connect( GTK_OBJECT(m_targetsWidget), "selection_received", - GTK_SIGNAL_FUNC( targets_selection_received ), - (gpointer) this ); - + 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 ), - (gpointer) this ); + 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 ), - (gpointer) NULL ); - + 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; 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 ); } @@ -332,39 +349,41 @@ void wxClipboard::Clear() /* 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 */ if (gdk_selection_owner_get( g_clipboardAtom ) == m_clipboardWidget->window) { m_waiting = TRUE; - - gtk_selection_owner_set( (GtkWidget*) NULL, g_clipboardAtom, GDK_CURRENT_TIME ); - + + gtk_selection_owner_set( (GtkWidget*) 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 ); - + + gtk_selection_owner_set( (GtkWidget*) NULL, GDK_SELECTION_PRIMARY, + (guint32) GDK_CURRENT_TIME ); + while (m_waiting) gtk_main_iteration(); } - + if (m_data) - { - delete m_data; - m_data = (wxDataObject*) NULL; - } - + { + delete m_data; + m_data = (wxDataObject*) NULL; + } + #if wxUSE_THREADS /* re-enable GUI threads */ wxapp_install_thread_wakeup(); #endif } - + m_targetRequested = 0; m_formatSupported = FALSE; } @@ -372,18 +391,18 @@ void wxClipboard::Clear() bool wxClipboard::Open() { 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") ); - + Clear(); return AddData( data ); @@ -392,91 +411,69 @@ bool wxClipboard::SetData( wxDataObject *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 */ 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 */ 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; + + 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() ); + + 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), + (gpointer) NULL ); #if wxUSE_THREADS - /* disable GUI threads */ - wxapp_uninstall_thread_wakeup(); + /* disable GUI threads */ + wxapp_uninstall_thread_wakeup(); #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; } @@ -488,94 +485,131 @@ 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; - + +#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") ); - + m_formatSupported = FALSE; - - /* perform query. this will set m_formatSupported to + + /* perform query. this will set m_formatSupported to TRUE if m_targetRequested is supported. - alsom 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" + until the callback "targets_selection_received" sets it to FALSE */ m_waiting = TRUE; gtk_selection_convert( m_targetsWidget, - m_usePrimary ? GDK_SELECTION_PRIMARY : g_clipboardAtom, - g_targetsAtom, - GDK_CURRENT_TIME ); + m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY + : g_clipboardAtom, + g_targetsAtom, + (guint32) 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, 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") ); - + /* start query */ m_formatSupported = FALSE; - - /* ask for clipboard contents. this will set - m_formatSupported to TRUE if m_targetRequested + + /* 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" + until the callback "targets_selection_received" sets it to FALSE */ m_waiting = TRUE; wxLogDebug( wxT("wxClipboard::GetData: format found, start convert") ); - + gtk_selection_convert( m_clipboardWidget, - m_usePrimary ? GDK_SELECTION_PRIMARY : g_clipboardAtom, - m_targetRequested, - GDK_CURRENT_TIME ); - + m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY + : g_clipboardAtom, + m_targetRequested, + (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") ); - - /* return success */ + + /* return success */ delete[] array; return TRUE; } - + + wxLogDebug( wxT("wxClipboard::GetData: format not found") ); + /* return failure */ delete[] array; return FALSE;