X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/75ce0581545a6c151484e488596ed200c2ffd93e..16bcc879d96712f9acf4bcc1236096251a1b7586:/src/gtk/clipbrd.cpp diff --git a/src/gtk/clipbrd.cpp b/src/gtk/clipbrd.cpp index 99ce0ac8b8..91048b86cb 100644 --- a/src/gtk/clipbrd.cpp +++ b/src/gtk/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; } //----------------------------------------------------------------------------- @@ -283,16 +334,32 @@ 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 +371,7 @@ wxClipboard::~wxClipboard() Clear(); if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget ); + if (m_targetsWidget) gtk_widget_destroy( m_targetsWidget ); } void wxClipboard::Clear() @@ -382,6 +450,26 @@ bool wxClipboard::AddData( wxDataObject *data ) /* 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, @@ -393,6 +481,7 @@ bool wxClipboard::AddData( wxDataObject *data ) format, selection_handler, (gpointer) NULL ); +#endif /* Tell the world we offer clipboard data */ @@ -422,57 +511,55 @@ void wxClipboard::Close() m_open = FALSE; } -bool wxClipboard::IsSupported( wxDataObject &data ) +bool wxClipboard::IsSupported( wxDataFormat format ) { wxCHECK_MSG( m_open, FALSE, "clipboard not open" ); /* store requested format to be asked for by callbacks */ - m_targetRequested = data.GetFormat().GetAtom(); + m_targetRequested = format.GetAtom(); wxCHECK_MSG( m_targetRequested, FALSE, "invalid clipboard format" ); - /* 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 ) +bool wxClipboard::GetData( wxDataObject *data ) { wxCHECK_MSG( m_open, FALSE, "clipboard not open" ); /* is data supported by clipboard ? */ - if (!IsSupported( data )) return FALSE; + if (!IsSupported( data->GetFormat() )) return FALSE; /* store pointer to data object to be filled up by callbacks */ - m_receivedData = &data; + m_receivedData = data; /* store requested format to be asked for by callbacks */ - m_targetRequested = data.GetFormat().GetAtom(); + m_targetRequested = data->GetFormat().GetAtom(); wxCHECK_MSG( m_targetRequested, FALSE, "invalid clipboard format" ); @@ -480,21 +567,23 @@ bool wxClipboard::GetData( wxDataObject &data ) 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 */ - /* ask for clipboard contents */ + 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 */