X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0d2a2b601b1994333886dff8f53d82a714c4042f..8e1e6facb70151e7fb26c3731c3d30602a70129d:/src/gtk1/clipbrd.cpp?ds=sidebyside diff --git a/src/gtk1/clipbrd.cpp b/src/gtk1/clipbrd.cpp index 11096c3a4c..a4bf7b6a6f 100644 --- a/src/gtk1/clipbrd.cpp +++ b/src/gtk1/clipbrd.cpp @@ -15,6 +15,8 @@ #if wxUSE_CLIPBOARD +#include "wx/utils.h" + #include "glib.h" #include "gdk/gdk.h" #include "gtk/gtk.h" @@ -25,7 +27,6 @@ wxClipboard *wxTheClipboard = (wxClipboard*) NULL; -GdkAtom g_textAtom = 0; GdkAtom g_clipboardAtom = 0; GdkAtom g_targetsAtom = 0; @@ -61,27 +62,47 @@ struct _GtkSelectionData static void targets_selection_received( GtkWidget *WXUNUSED(widget), GtkSelectionData *selection_data, +#if (GTK_MINOR_VERSION > 0) + guint32 WXUNUSED(time), +#endif wxClipboard *clipboard ) { - if (!wxTheClipboard) return; - - if (selection_data->length <= 0) return; + if (!wxTheClipboard) + { + clipboard->m_waiting = FALSE; + return; + } - // make sure we got the data in the correct form - if (selection_data->type != GDK_SELECTION_TYPE_ATOM) 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; for (unsigned int i=0; ilength/sizeof(GdkAtom); i++) { +/* char *name = gdk_atom_name (atoms[i]); + if (name) printf( "Format available: %s.\n", name ); */ + if (atoms[i] == clipboard->m_targetRequested) { + clipboard->m_waiting = FALSE; clipboard->m_formatSupported = TRUE; return; } } + clipboard->m_waiting = FALSE; return; } @@ -92,28 +113,50 @@ targets_selection_received( GtkWidget *WXUNUSED(widget), static void selection_received( GtkWidget *WXUNUSED(widget), GtkSelectionData *selection_data, +#if (GTK_MINOR_VERSION > 0) + guint32 WXUNUSED(time), +#endif wxClipboard *clipboard ) { - if (!wxTheClipboard) return; + if (!wxTheClipboard) + { + clipboard->m_waiting = FALSE; + return; + } wxDataObject *data_object = clipboard->m_receivedData; - if (!data_object) return; + if (!data_object) + { + clipboard->m_waiting = FALSE; + return; + } - if (selection_data->length <= 0) return; + if (selection_data->length <= 0) + { + clipboard->m_waiting = FALSE; + return; + } - // make sure we got the data in the correct format - - if (data_object->GetFormat().GetAtom() != selection_data->target) return; + /* make sure we got the data in the correct format */ + if (data_object->GetFormat().GetAtom() != selection_data->target) + { + clipboard->m_waiting = FALSE; + return; + } - // make sure we got the data in the correct form (selection type). - // if so, copy data to target object + /* make sure we got the data in the correct form (selection type). + if so, copy data to target object */ switch (data_object->GetFormat().GetType()) { case wxDF_TEXT: { - if (selection_data->type != GDK_SELECTION_TYPE_STRING) return; + if (selection_data->type != GDK_SELECTION_TYPE_STRING) + { + clipboard->m_waiting = FALSE; + return; + } wxTextDataObject *text_object = (wxTextDataObject *) data_object; @@ -126,16 +169,22 @@ selection_received( GtkWidget *WXUNUSED(widget), case wxDF_BITMAP: { - if (selection_data->type != GDK_SELECTION_TYPE_BITMAP) return; - - return; + if (selection_data->type != GDK_SELECTION_TYPE_BITMAP) + { + clipboard->m_waiting = FALSE; + return; + } break; } case wxDF_PRIVATE: { - if (selection_data->type != GDK_SELECTION_TYPE_STRING) return; + if (selection_data->type != GDK_SELECTION_TYPE_STRING) + { + clipboard->m_waiting = FALSE; + return; + } wxPrivateDataObject *private_object = (wxPrivateDataObject *) data_object; @@ -146,11 +195,13 @@ selection_received( GtkWidget *WXUNUSED(widget), default: { + clipboard->m_waiting = FALSE; return; } } wxTheClipboard->m_formatSupported = TRUE; + clipboard->m_waiting = FALSE; } //----------------------------------------------------------------------------- @@ -173,14 +224,14 @@ selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event ) } else { + wxTheClipboard->m_waiting = FALSE; return FALSE; } if ((!wxTheClipboard->m_ownsPrimarySelection) && (!wxTheClipboard->m_ownsClipboard)) { - /* the clipboard is no longer in our hands. we can the clipboard data. */ - + /* the clipboard is no longer in our hands. we can the delete clipboard data. */ if (wxTheClipboard->m_dataBroker) { delete wxTheClipboard->m_dataBroker; @@ -188,6 +239,7 @@ selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event ) } } + wxTheClipboard->m_waiting = FALSE; return TRUE; } @@ -211,7 +263,7 @@ selection_handler( GtkWidget *WXUNUSED(widget), GtkSelectionData *selection_data if (data_object->GetFormat().GetAtom() != selection_data->target) { node = node->Next(); - break; + continue; } switch (data_object->GetFormat().GetType()) @@ -222,14 +274,19 @@ selection_handler( GtkWidget *WXUNUSED(widget), GtkSelectionData *selection_data wxString text = text_object->GetText(); - char *s = WXSTRINGCAST text; +#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*) s, + (unsigned char*) (const char*) s, len ); break; @@ -283,16 +340,32 @@ 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), + "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), + "selection_received", + GTK_SIGNAL_FUNC( selection_received ), + (gpointer) this ); + gtk_signal_connect( GTK_OBJECT(m_clipboardWidget), "selection_clear_event", GTK_SIGNAL_FUNC( selection_clear_clip ), (gpointer) NULL ); if (!g_clipboardAtom) g_clipboardAtom = gdk_atom_intern( "CLIPBOARD", FALSE ); - if (!g_textAtom) g_textAtom = gdk_atom_intern( "TEXT", FALSE ); if (!g_targetsAtom) g_targetsAtom = gdk_atom_intern ("TARGETS", FALSE); m_formatSupported = FALSE; @@ -304,6 +377,7 @@ wxClipboard::~wxClipboard() Clear(); if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget ); + if (m_targetsWidget) gtk_widget_destroy( m_targetsWidget ); } void wxClipboard::Clear() @@ -315,12 +389,20 @@ void wxClipboard::Clear() if (gdk_selection_owner_get( g_clipboardAtom ) == m_clipboardWidget->window) { + m_waiting = TRUE; + gtk_selection_owner_set( (GtkWidget*) NULL, g_clipboardAtom, 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 ); + + while (m_waiting) gtk_main_iteration(); } if (m_dataBroker) @@ -337,145 +419,188 @@ void wxClipboard::Clear() bool wxClipboard::Open() { - wxCHECK_MSG( !m_open, FALSE, "clipboard already open" ); + wxCHECK_MSG( !m_open, FALSE, _T("clipboard already open") ); m_open = TRUE; return TRUE; } -bool wxClipboard::SetData( wxDataBroker *data ) +bool wxClipboard::SetData( wxDataObject *data ) { - wxCHECK_MSG( data, FALSE, "data is invalid" ); + wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") ); + + wxCHECK_MSG( data, FALSE, _T("data is invalid") ); Clear(); + + return AddData( data ); +} + +bool wxClipboard::AddData( wxDataObject *data ) +{ + wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") ); - m_dataBroker = data; + wxCHECK_MSG( data, FALSE, _T("data is invalid") ); - if (!m_dataBroker) return FALSE; - - wxCHECK_MSG( m_open, FALSE, "clipboard not open" ); + /* if clipboard has been cleared before, create new data broker */ + if (!m_dataBroker) m_dataBroker = new wxDataBroker(); - wxNode *node = m_dataBroker->m_dataObjects.First(); - while (node) - { - wxDataObject *dobj = (wxDataObject*)node->Data(); - - GdkAtom format = dobj->GetFormat().GetAtom(); + /* add new data to list of offered data objects */ + m_dataBroker->Add( data ); + + /* get native format id of new data object */ + GdkAtom format = data->GetFormat().GetAtom(); - if (format != (GdkAtom) 0) - { - /* This should happen automatically */ - - m_ownsClipboard = FALSE; - m_ownsPrimarySelection = FALSE; + wxCHECK_MSG( format, FALSE, _T("data has invalid format") ); - /* Add handlers if someone requests data */ - - gtk_selection_add_handler( m_clipboardWidget, + /* This should happen automatically, but to be on the safe side */ + m_ownsClipboard = FALSE; + m_ownsPrimarySelection = FALSE; + + /* Add handlers if someone requests data */ + +#if (GTK_MINOR_VERSION > 0) + + gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget), + GDK_SELECTION_PRIMARY, + format, + 0 ); /* what is info ? */ + + gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget), + g_clipboardAtom, + format, + 0 ); /* what is info ? */ + + gtk_signal_connect( GTK_OBJECT(m_clipboardWidget), + "selection_get", + GTK_SIGNAL_FUNC(selection_handler), + (gpointer) NULL ); + +#else + + gtk_selection_add_handler( m_clipboardWidget, g_clipboardAtom, format, selection_handler, (gpointer) NULL ); - gtk_selection_add_handler( m_clipboardWidget, + gtk_selection_add_handler( m_clipboardWidget, GDK_SELECTION_PRIMARY, format, selection_handler, (gpointer) NULL ); - - /* Tell the world we offer clipboard data */ - - if (!gtk_selection_owner_set( m_clipboardWidget, +#endif + +// printf( "vorher.\n" ); + /* Tell the world we offer clipboard data */ + if (!gtk_selection_owner_set( m_clipboardWidget, g_clipboardAtom, GDK_CURRENT_TIME )) - { - return FALSE; - } - m_ownsClipboard = TRUE; + { + return FALSE; + } + m_ownsClipboard = TRUE; + +// printf( "nachher.\n" ); + + return TRUE; - if (!gtk_selection_owner_set( m_clipboardWidget, + if (!gtk_selection_owner_set( m_clipboardWidget, GDK_SELECTION_PRIMARY, GDK_CURRENT_TIME )) - { - return FALSE; - } - m_ownsPrimarySelection = TRUE; - } - - node = node->Next(); + { + return FALSE; } - + m_ownsPrimarySelection = TRUE; + return TRUE; } void wxClipboard::Close() { - wxCHECK_RET( m_open, "clipboard not open" ); + wxCHECK_RET( m_open, _T("clipboard not open") ); m_open = FALSE; } -bool wxClipboard::GetData( wxDataObject *data ) +bool wxClipboard::IsSupported( wxDataFormat format ) { - wxCHECK_MSG( m_open, FALSE, "clipboard not open" ); + wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") ); - m_receivedData = data; - - wxCHECK_MSG( m_receivedData, FALSE, "invalid data object" ); + /* store requested format to be asked for by callbacks */ - /* STEP ONE: check if there is such data in the clipboard */ - - m_targetRequested = data->GetFormat().GetAtom(); + m_targetRequested = format.GetAtom(); - wxCHECK_MSG( m_targetRequested, FALSE, "invalid clipboard format" ); + wxCHECK_MSG( m_targetRequested, FALSE, _T("invalid clipboard format") ); - if (m_targetRequested == 0) return FALSE; - - /* add handler for target (= format) query */ - - gtk_signal_connect( GTK_OBJECT(m_clipboardWidget), - "selection_received", - GTK_SIGNAL_FUNC( targets_selection_received ), - (gpointer) this ); - m_formatSupported = FALSE; /* perform query. this will set m_formatSupported to - * TRUE if m_targetRequested is supported */ - - gtk_selection_convert( m_clipboardWidget, + TRUE if m_targetRequested is supported. + alsom 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, g_clipboardAtom, g_targetsAtom, GDK_CURRENT_TIME ); - gtk_signal_disconnect_by_func( GTK_OBJECT(m_clipboardWidget), - GTK_SIGNAL_FUNC( targets_selection_received ), - (gpointer) this ); - + while (m_waiting) gtk_main_iteration(); + if (!m_formatSupported) return FALSE; + + return TRUE; +} + +bool wxClipboard::GetData( wxDataObject *data ) +{ + wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") ); + + /* is data supported by clipboard ? */ + + if (!IsSupported( data->GetFormat() )) return FALSE; + + /* 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 = data->GetFormat().GetAtom(); - /* STEP TWO: get the data from the clipboard */ + wxCHECK_MSG( m_targetRequested, FALSE, _T("invalid clipboard format") ); + + /* start query */ m_formatSupported = FALSE; - gtk_signal_connect( GTK_OBJECT(m_clipboardWidget), - "selection_received", - GTK_SIGNAL_FUNC( selection_received ), - (gpointer) this ); + /* 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 + 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_clipboardWidget, g_clipboardAtom, m_targetRequested, GDK_CURRENT_TIME ); - gtk_signal_disconnect_by_func( GTK_OBJECT(m_clipboardWidget), - GTK_SIGNAL_FUNC( selection_received ), - (gpointer) this ); + 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, "error retrieving data from clipboard" ); + wxCHECK_MSG( m_formatSupported, FALSE, _T("error retrieving data from clipboard") ); return TRUE; }