/////////////////////////////////////////////////////////////////////////////
-// 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__
#include "wx/utils.h"
#include "wx/log.h"
-#include "glib.h"
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include <glib.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
//-----------------------------------------------------------------------------
// thread system
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 wxChar *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
GdkAtom selection;
GdkAtom target;
GdkAtom type;
- gint format;
+ gint format;
guchar *data;
- gint length;
+ gint length;
};
*/
//-----------------------------------------------------------------------------
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 )
{
- if (!wxTheClipboard)
- {
- clipboard->m_waiting = FALSE;
- return;
- }
-
- if (selection_data->length <= 0)
+ if ( wxTheClipboard && 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;
- }
-
-/*
- wxDataFormat clip( selection_data->selection );
- wxLogDebug( 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;
+ /* 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; i<selection_data->length/sizeof(GdkAtom); i++)
- {
- wxDataFormat format( atoms[i] );
-
-/*
- wxLogDebug( wxT("selection received for targets, format %s"), format.GetId().c_str() );
-*/
+#ifdef __WXDEBUG__
+ wxDataFormat clip( selection_data->selection );
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("selection received for targets, clipboard %s"),
+ clip.GetId().c_str() );
+#endif // __WXDEBUG__
- if (format == clipboard->m_targetRequested)
+ // the atoms we received, holding a list of targets (= formats)
+ GdkAtom *atoms = (GdkAtom *)selection_data->data;
+
+ for (unsigned int i=0; i<selection_data->length/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
clipboard->m_waiting = FALSE;
return;
}
-
+
wxDataObject *data_object = clipboard->m_receivedData;
if (!data_object)
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 ) )
{
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;
}
selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event )
{
if (!wxTheClipboard) return TRUE;
-
+
if (event->selection == GDK_SELECTION_PRIMARY)
{
wxTheClipboard->m_ownsPrimarySelection = FALSE;
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)
{
- wxLogDebug( wxT("wxClipboard will get cleared" ) );
-
+ wxLogDebug( wxT("wxClipboard will get cleared" ) );
+
delete wxTheClipboard->m_data;
wxTheClipboard->m_data = (wxDataObject*) NULL;
}
}
-
+
wxTheClipboard->m_waiting = FALSE;
return TRUE;
}
//-----------------------------------------------------------------------------
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)
{
const char *s = text.c_str();
int len = (int) text.Length();
#endif
- gtk_selection_data_set(
- selection_data,
- GDK_SELECTION_TYPE_STRING,
+ gtk_selection_data_set(
+ selection_data,
+ GDK_SELECTION_TYPE_STRING,
8*sizeof(gchar),
(unsigned char*) (const char*) s,
- len );
-
+ 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),
+ gtk_selection_data_set(
+ selection_data,
+ GDK_SELECTION_TYPE_STRING,
+ 8*sizeof(gchar),
(unsigned char*) d,
- size );
+ size );
}
//-----------------------------------------------------------------------------
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 ),
+ 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 ),
+ 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 ),
+ 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 );
}
/* 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,
(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,
(guint32) GDK_CURRENT_TIME );
-
+
while (m_waiting) gtk_main_iteration();
}
-
+
if (m_data)
- {
+ {
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;
}
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 );
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;
/* get formats from wxDataObjects */
GdkAtom clipboard = m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
: g_clipboardAtom;
-
+
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() );
gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
- clipboard,
- array[i],
+ 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),
+ GTK_SIGNAL_FUNC(selection_handler),
(gpointer) NULL );
#if wxUSE_THREADS
/* disable GUI threads */
wxapp_uninstall_thread_wakeup();
#endif
-
+
/* Tell the world we offer clipboard data */
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 res;
}
void wxClipboard::Close()
{
wxCHECK_RET( m_open, wxT("clipboard not open") );
-
+
m_open = FALSE;
}
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 ? (GdkAtom)GDK_SELECTION_PRIMARY
- : g_clipboardAtom,
+ : 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: 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") );
-
+
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.
- 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;
gtk_selection_convert( m_targetsWidget,
m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
- : g_clipboardAtom,
+ : 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 ? (GdkAtom)GDK_SELECTION_PRIMARY
- : g_clipboardAtom,
+ : 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 */
delete[] array;
return TRUE;
}
-
+
wxLogDebug( wxT("wxClipboard::GetData: format not found") );
-
+
/* return failure */
delete[] array;
return FALSE;
projects / wxWidgets.git / blobdiff