/////////////////////////////////////////////////////////////////////////////
-// Name: clipbrd.cpp
+// Name: src/x11/clipbrd.cpp
// Purpose: Clipboard functionality
-// Author: Julian Smart
-// Modified by:
-// Created: 17/09/98
+// Author: Robert Roebling
+// Created:
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart
-// Licence: wxWindows licence
+// Copyright: (c) Robert Roebling
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation
-#pragma implementation "clipbrd.h"
-#endif
-
-#include "wx/defs.h"
+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
#if wxUSE_CLIPBOARD
-#include "wx/app.h"
-#include "wx/frame.h"
-#include "wx/bitmap.h"
-#include "wx/utils.h"
-#include "wx/metafile.h"
#include "wx/clipbrd.h"
-#include "wx/dataobj.h"
-#ifdef __VMS__
-#pragma message disable nosimpint
+#ifndef WX_PRECOMP
+ #include "wx/log.h"
+ #include "wx/utils.h"
+ #include "wx/dataobj.h"
#endif
-#include <Xm/Xm.h>
-#include <Xm/CutPaste.h>
-#ifdef __VMS__
-#pragma message enable nosimpint
+
+#include "wx/x11/private.h"
+
+//-----------------------------------------------------------------------------
+// data
+//-----------------------------------------------------------------------------
+
+#if !wxUSE_NANOX
+Atom g_clipboardAtom = 0;
+Atom g_targetsAtom = 0;
#endif
-#include <string.h>
+// avoid warnings about unused static variable (notice that we still use it
+// even in release build if the compiler doesn't support variadic macros)
+#if defined(__WXDEBUG__) || !defined(HAVE_VARIADIC_MACROS)
-// IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject)
-// IMPLEMENT_ABSTRACT_CLASS(wxClipboardClient, wxObject)
+// 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 = wxT("clipboard");
-static bool gs_clipboardIsOpen = FALSE;
+#endif // __WXDEBUG__
-bool wxOpenClipboard()
+//-----------------------------------------------------------------------------
+// reminder
+//-----------------------------------------------------------------------------
+
+/* The contents of a selection are returned in a GtkSelectionData
+ 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
+ directly, and pointers to them should not be stored beyond the duration of
+ a callback. (If the last is changed, we'll need to add reference
+ counting)
+
+struct _GtkSelectionData
{
- if (!gs_clipboardIsOpen)
- {
- gs_clipboardIsOpen = TRUE;
- return TRUE;
- }
- else
- return FALSE;
-}
+ GdkAtom selection;
+ GdkAtom target;
+ GdkAtom type;
+ gint format;
+ guchar *data;
+ gint length;
+};
+
+*/
+
+//-----------------------------------------------------------------------------
+// "selection_received" for targets
+//-----------------------------------------------------------------------------
+
+#if 0
-bool wxCloseClipboard()
+static void
+targets_selection_received( GtkWidget *WXUNUSED(widget),
+ GtkSelectionData *selection_data,
+#if (GTK_MINOR_VERSION > 0)
+ guint32 WXUNUSED(time),
+#endif
+ wxClipboard *clipboard )
{
- if (gs_clipboardIsOpen)
+ if ( wxTheClipboard && selection_data->length > 0 )
{
- gs_clipboardIsOpen = FALSE;
- return TRUE;
- }
- else
- return FALSE;
-}
+ /* 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,
+ wxT("got unsupported clipboard target") );
-bool wxEmptyClipboard()
-{
- // No equivalent in Motif
- return TRUE;
-}
+ clipboard->m_waiting = false;
+ return;
+ }
+ }
-bool wxClipboardOpen()
-{
- return gs_clipboardIsOpen;
-}
+#ifdef __WXDEBUG__
+ wxDataFormat clip( selection_data->selection );
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("selection received for targets, clipboard %s"),
+ clip.GetId().c_str() );
+#endif // __WXDEBUG__
-bool wxIsClipboardFormatAvailable(wxDataFormat dataFormat)
-{
- // Only text is supported.
- if (dataFormat != wxDF_TEXT)
- return FALSE;
+ // the atoms we received, holding a list of targets (= formats)
+ GdkAtom *atoms = (GdkAtom *)selection_data->data;
- unsigned long numBytes = 0;
- long privateId = 0;
-
- Window window = (Window) 0;
- if (wxTheApp->GetTopWindow())
- window = XtWindow( (Widget) wxTheApp->GetTopWindow()->GetTopWidget() );
+ for (unsigned int i=0; i<selection_data->length/sizeof(GdkAtom); i++)
+ {
+ wxDataFormat format( atoms[i] );
- int success = XmClipboardRetrieve((Display*) wxGetDisplay(),
- window, "TEXT", (XtPointer) 0, 0, & numBytes, & privateId) ;
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("selection received for targets, format %s"),
+ format.GetId().c_str() );
- // Assume only text is supported. If we have anything at all,
- // or the clipboard is locked so we're not sure, we say we support it.
- if (success == ClipboardNoData)
- return FALSE;
- else
- return TRUE;
-}
+ if (format == clipboard->m_targetRequested)
+ {
+ clipboard->m_waiting = false;
+ clipboard->m_formatSupported = true;
+ return;
+ }
+ }
+ }
-bool wxSetClipboardData(wxDataFormat dataFormat, wxObject *obj, int WXUNUSED(width), int WXUNUSED(height))
-{
- if (dataFormat != wxDF_TEXT)
- return FALSE;
+ clipboard->m_waiting = false;
+}
- char* data = (char*) obj;
+//-----------------------------------------------------------------------------
+// "selection_received" for the actual data
+//-----------------------------------------------------------------------------
- XmString text = XmStringCreateSimple ("CLIPBOARD");
- Window window = (Window) 0;
- if (wxTheApp->GetTopWindow())
- window = XtWindow( (Widget) wxTheApp->GetTopWindow()->GetTopWidget() );
+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;
+ return;
+ }
- long itemId = 0;
- int result = 0;
+ wxDataObject *data_object = clipboard->m_receivedData;
- while ((result =
- XmClipboardStartCopy((Display*) wxGetDisplay(),
- window,
- text,
- XtLastTimestampProcessed((Display*) wxGetDisplay()),
- (Widget) 0,
- (XmCutPasteProc) 0,
- & itemId)) != ClipboardSuccess)
+ if (!data_object)
+ {
+ clipboard->m_waiting = false;
+ return;
+ }
- ;
+ if (selection_data->length <= 0)
+ {
+ clipboard->m_waiting = false;
+ return;
+ }
- XmStringFree (text);
+ wxDataFormat format( selection_data->target );
- long dataId = 0;
- while ((result =
- XmClipboardCopy((Display*) wxGetDisplay(),
- window,
- itemId,
- "TEXT",
- (XtPointer) data,
- strlen(data) + 1,
- 0,
- & dataId)) != ClipboardSuccess)
+ /* make sure we got the data in the correct format */
+ if (!data_object->IsSupportedFormat( format ) )
+ {
+ 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 (selection_data->type != GDK_SELECTION_TYPE_STRING)
+ {
+ clipboard->m_waiting = false;
+ return;
+ }
- while (( result =
- XmClipboardEndCopy((Display*) wxGetDisplay(),
- window, itemId) ) != ClipboardSuccess)
+ data_object->SetData( format, (size_t) selection_data->length, (const char*) selection_data->data );
- ;
-
- return TRUE;
+ wxTheClipboard->m_formatSupported = true;
+ clipboard->m_waiting = false;
}
-wxObject *wxGetClipboardData(wxDataFormat dataFormat, long *len)
-{
- if (dataFormat != wxDF_TEXT)
- return (wxObject*) NULL;
+//-----------------------------------------------------------------------------
+// "selection_clear"
+//-----------------------------------------------------------------------------
- bool done = FALSE;
- long id = 0;
- unsigned long numBytes = 0;
- int result = 0;
- Window window = (Window) 0;
- if (wxTheApp->GetTopWindow())
- window = XtWindow( (Widget) wxTheApp->GetTopWindow()->GetTopWidget() );
+static gint
+selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event )
+{
+ if (!wxTheClipboard) return TRUE;
- int currentDataSize = 256;
- char* data = new char[currentDataSize];
+ if (event->selection == GDK_SELECTION_PRIMARY)
+ {
+ wxTheClipboard->m_ownsPrimarySelection = false;
+ }
+ else
+ if (event->selection == g_clipboardAtom)
+ {
+ wxTheClipboard->m_ownsClipboard = false;
+ }
+ else
+ {
+ wxTheClipboard->m_waiting = false;
+ return FALSE;
+ }
- while (!done)
+ if ((!wxTheClipboard->m_ownsPrimarySelection) &&
+ (!wxTheClipboard->m_ownsClipboard))
{
- if (result == ClipboardTruncate)
+ /* the clipboard is no longer in our hands. we can the delete clipboard data. */
+ if (wxTheClipboard->m_data)
{
- delete[] data;
- currentDataSize = 2*currentDataSize;
- data = new char[currentDataSize];
- }
- result = XmClipboardRetrieve((Display*) wxGetDisplay(),
- window,
- "TEXT",
- (XtPointer) data,
- currentDataSize,
- &numBytes,
- &id);
-
- switch (result)
- {
- case ClipboardSuccess:
- {
- if (len)
- *len = strlen(data) + 1;
- return (wxObject*) data;
- break;
- }
- case ClipboardTruncate:
- case ClipboardLocked:
- {
- break;
- }
- default:
- case ClipboardNoData:
- {
- return (wxObject*) NULL;
- break;
- }
- }
-
+ wxLogTrace(TRACE_CLIPBOARD, wxT("wxClipboard will get cleared" ));
+
+ wxDELETE(wxTheClipboard->m_data);
+ }
}
- return NULL;
+ wxTheClipboard->m_waiting = false;
+ return TRUE;
}
-wxDataFormat wxEnumClipboardFormats(wxDataFormat dataFormat)
-{
- // Only wxDF_TEXT supported
- if (dataFormat == wxDF_TEXT)
- return wxDF_TEXT;
- else
- return wxDF_INVALID;
-}
+//-----------------------------------------------------------------------------
+// selection handler for supplying data
+//-----------------------------------------------------------------------------
-wxDataFormat wxRegisterClipboardFormat(char *WXUNUSED(formatName))
+static void
+selection_handler( GtkWidget *WXUNUSED(widget),
+ GtkSelectionData *selection_data,
+ guint WXUNUSED(info),
+ guint WXUNUSED(time),
+ gpointer WXUNUSED(data) )
{
- // Not supported
- return (wxDataFormat) wxDF_INVALID;
-}
+ if (!wxTheClipboard) return;
-bool wxGetClipboardFormatName(wxDataFormat dataFormat, char *formatName, int WXUNUSED(maxCount))
-{
- // Only wxDF_TEXT supported
- if (dataFormat == wxDF_TEXT)
+ if (!wxTheClipboard->m_data) return;
+
+ wxDataObject *data = wxTheClipboard->m_data;
+
+ wxDataFormat format( selection_data->target );
+
+ if (!data->IsSupportedFormat( format )) return;
+
+ int size = data->GetDataSize( format );
+
+ if (size == 0) return;
+
+ void *d = malloc(size);
+
+ data->GetDataHere( selection_data->target, d );
+
+ // transform Unicode text into multibyte before putting it on clipboard
+#if wxUSE_UNICODE
+ if ( format.GetType() == wxDF_TEXT || format.GetType() == wxDF_UNICODETEXT)
{
- strcpy(formatName, "TEXT");
- return TRUE;
+ const wchar_t *wstr = (const wchar_t *)d;
+ size_t len = wxConvCurrent->WC2MB(NULL, wstr, 0);
+ char *str = malloc(len + 1);
+ wxConvCurrent->WC2MB(str, wstr, len);
+ str[len] = '\0';
+
+ free(d);
+ d = str;
}
- else
- return FALSE;
+#endif // wxUSE_UNICODE
+
+ gtk_selection_data_set(
+ selection_data,
+ GDK_SELECTION_TYPE_STRING,
+ 8*sizeof(gchar),
+ (unsigned char*) d,
+ size );
+
+ free(d);
}
+#endif
+
//-----------------------------------------------------------------------------
// wxClipboard
//-----------------------------------------------------------------------------
wxClipboard::wxClipboard()
{
- m_open = FALSE;
+ m_open = false;
+
+ m_ownsClipboard = false;
+ m_ownsPrimarySelection = false;
+
+ m_data = NULL;
+ m_receivedData = NULL;
+
+ /* we use m_targetsWidget to query what formats are available */
+
+ /* we use m_clipboardWidget to get and to offer data */
+#if !wxUSE_NANOX
+ if (!g_clipboardAtom) g_clipboardAtom = XInternAtom( (Display*) wxGetDisplay(), "CLIPBOARD", False );
+ if (!g_targetsAtom) g_targetsAtom = XInternAtom( (Display*) wxGetDisplay(), "TARGETS", False );
+#endif
+
+ m_formatSupported = false;
+ m_targetRequested = 0;
}
wxClipboard::~wxClipboard()
{
- Clear();
+ Clear();
+
+// if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
+// if (m_targetsWidget) gtk_widget_destroy( m_targetsWidget );
}
void wxClipboard::Clear()
{
- wxNode* node = m_data.First();
- while (node)
+ if (m_data)
{
- wxDataObject* data = (wxDataObject*) node->Data();
- delete data;
- node = node->Next();
+#if wxUSE_THREADS
+ /* disable GUI threads */
+#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 0
+ if (gdk_selection_owner_get( g_clipboardAtom ) == m_clipboardWidget->window)
+ {
+ m_waiting = true;
+
+ gtk_selection_owner_set( 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( NULL, GDK_SELECTION_PRIMARY,
+ (guint32) GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+ }
+#endif
+
+ wxDELETE(m_data);
+
+#if wxUSE_THREADS
+ /* re-enable GUI threads */
+#endif
}
- m_data.Clear();
+
+ m_targetRequested = 0;
+ m_formatSupported = false;
}
bool wxClipboard::Open()
{
- wxCHECK_MSG( !m_open, FALSE, "clipboard already open" );
-
- m_open = TRUE;
+ wxCHECK_MSG( !m_open, false, wxT("clipboard already open") );
- return wxOpenClipboard();
+ m_open = true;
+
+ return true;
}
bool wxClipboard::SetData( wxDataObject *data )
{
- wxCHECK_MSG( data, FALSE, "data is invalid" );
- wxCHECK_MSG( m_open, FALSE, "clipboard not open" );
+ wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
+
+ wxCHECK_MSG( data, false, wxT("data is invalid") );
Clear();
bool wxClipboard::AddData( wxDataObject *data )
{
- wxCHECK_MSG( data, FALSE, "data is invalid" );
- wxCHECK_MSG( m_open, FALSE, "clipboard not open" );
+#if wxUSE_NANOX
+ return false;
+#else
+ 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 */
+ wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
+ m_data->GetAllFormats( array );
- wxDataFormat::NativeFormat format = data->GetPreferredFormat().GetType();
- switch ( format )
- {
- case wxDF_TEXT:
- case wxDF_OEMTEXT:
- {
- wxTextDataObject* textDataObject = (wxTextDataObject*) data;
- wxString str(textDataObject->GetText());
- return wxSetClipboardData(format, (wxObject*) (const char*) str);
- }
#if 0
- case wxDF_BITMAP:
- case wxDF_DIB:
- {
- wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject*) data;
- wxBitmap bitmap(bitmapDataObject->GetBitmap());
- return wxSetClipboardData(data->GetType(), & bitmap);
- break;
- }
+ /* primary selection or clipboard */
+ Atom clipboard = m_usePrimary ? (Atom) 1 // 1 = primary selection
+ : g_clipboardAtom;
#endif // 0
+
+
+ for (size_t i = 0; i < m_data->GetFormatCount(); i++)
+ {
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard now supports atom %s"),
+ array[i].GetId().c_str() );
+
+#if 0
+ gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
+ clipboard,
+ array[i],
+ 0 ); /* what is info ? */
+#endif
}
-
- return FALSE;
+
+ delete[] array;
+
+#if 0
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+ "selection_get",
+ GTK_SIGNAL_FUNC(selection_handler),
+ (gpointer) NULL );
+#endif
+
+#if wxUSE_THREADS
+ /* disable GUI threads */
+#endif
+
+ bool res = false;
+#if 0
+ /* Tell the world we offer clipboard data */
+ res = (gtk_selection_owner_set( m_clipboardWidget,
+ clipboard,
+ (guint32) GDK_CURRENT_TIME ));
+#endif
+
+ if (m_usePrimary)
+ m_ownsPrimarySelection = res;
+ else
+ m_ownsClipboard = res;
+
+#if wxUSE_THREADS
+ /* re-enable GUI threads */
+#endif
+
+ return res;
+#endif
}
void wxClipboard::Close()
{
- wxCHECK_RET( m_open, "clipboard not open" );
-
- m_open = FALSE;
- wxCloseClipboard();
+ wxCHECK_RET( m_open, wxT("clipboard not open") );
+
+ m_open = false;
}
-bool wxClipboard::IsSupported( const wxDataFormat& format)
+bool wxClipboard::IsOpened() const
{
- return wxIsClipboardFormatAvailable(format);
+ return m_open;
}
-bool wxClipboard::GetData( wxDataObject& data )
+bool wxClipboard::IsSupported( const wxDataFormat& format )
{
- wxCHECK_MSG( m_open, FALSE, "clipboard not open" );
-
- wxDataFormat::NativeFormat format = data.GetPreferredFormat().GetType();
- switch ( format )
- {
- case wxDF_TEXT:
- case wxDF_OEMTEXT:
- {
- wxTextDataObject& textDataObject = (wxTextDataObject &) data;
- char* s = (char*) wxGetClipboardData(format);
- if (s)
- {
- textDataObject.SetText(s);
- delete[] s;
- return TRUE;
- }
- else
- return FALSE;
- break;
- }
-/*
- case wxDF_BITMAP:
- case wxDF_DIB:
- {
- wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject*) data;
- wxBitmap* bitmap = (wxBitmap*) wxGetClipboardData(data->GetType());
- if (bitmap)
- {
- bitmapDataObject->SetBitmap(* bitmap);
- delete bitmap;
- return TRUE;
- }
- else
- return FALSE;
- break;
- }
-*/
- default:
- {
- return FALSE;
- }
- }
- return FALSE;
-}
+ /* reentrance problems */
+ 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
+ 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;
#if 0
+ gtk_selection_convert( m_targetsWidget,
+ m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
+ : g_clipboardAtom,
+ g_targetsAtom,
+ (guint32) GDK_CURRENT_TIME );
-/*
-* Old clipboard implementation by Matthew Flatt
-*/
+ while (m_waiting) gtk_main_iteration();
+#endif
-wxClipboard *wxTheClipboard = NULL;
+ if (!m_formatSupported) return false;
-void wxInitClipboard()
-{
- if (!wxTheClipboard)
- wxTheClipboard = new wxClipboard;
+ return true;
}
-wxClipboard::wxClipboard()
+bool wxClipboard::GetData( wxDataObject& data )
{
- clipOwner = NULL;
- cbString = NULL;
-}
+ wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
-wxClipboard::~wxClipboard()
-{
- if (clipOwner)
- clipOwner->BeingReplaced();
- if (cbString)
- delete[] cbString;
-}
+ /* get formats from wxDataObjects */
+ wxDataFormat *array = new wxDataFormat[ data.GetFormatCount() ];
+ data.GetAllFormats( array );
-static int FormatStringToID(char *str)
-{
- if (!strcmp(str, "TEXT"))
- return wxDF_TEXT;
-
- return wxRegisterClipboardFormat(str);
-}
+ for (size_t i = 0; i < data.GetFormatCount(); i++)
+ {
+ wxDataFormat format( array[i] );
-void wxClipboard::SetClipboardClient(wxClipboardClient *client, long time)
-{
- bool got_selection;
-
- if (clipOwner)
- clipOwner->BeingReplaced();
- clipOwner = client;
- if (cbString) {
- delete[] cbString;
- cbString = NULL;
- }
-
- if (wxOpenClipboard()) {
- char **formats, *data;
- int i;
- int ftype;
- long size;
-
- formats = clipOwner->formats.ListToArray(FALSE);
- for (i = clipOwner->formats.Number(); i--; ) {
- ftype = FormatStringToID(formats[i]);
- data = clipOwner->GetData(formats[i], &size);
- if (!wxSetClipboardData(ftype, (wxObject *)data, size, 1)) {
- got_selection = FALSE;
- break;
- }
- }
-
- if (i < 0)
- got_selection = wxCloseClipboard();
- } else
- got_selection = FALSE;
-
- got_selection = FALSE; // Assume another process takes over
-
- if (!got_selection) {
- clipOwner->BeingReplaced();
- clipOwner = NULL;
- }
-}
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: requested format: %s"),
+ format.GetId().c_str() );
-wxClipboardClient *wxClipboard::GetClipboardClient()
-{
- return clipOwner;
-}
+ /* is data supported by clipboard ? */
-void wxClipboard::SetClipboardString(char *str, long time)
-{
- bool got_selection;
-
- if (clipOwner) {
- clipOwner->BeingReplaced();
- clipOwner = NULL;
- }
- if (cbString)
- delete[] cbString;
-
- cbString = str;
-
- if (wxOpenClipboard()) {
- if (!wxSetClipboardData(wxDF_TEXT, (wxObject *)str))
- got_selection = FALSE;
- else
- got_selection = wxCloseClipboard();
- } else
- got_selection = FALSE;
-
- got_selection = FALSE; // Assume another process takes over
-
- if (!got_selection) {
- delete[] cbString;
- cbString = NULL;
- }
-}
+ /* store requested format to be asked for by callbacks */
+ m_targetRequested = format;
-char *wxClipboard::GetClipboardString(long time)
-{
- char *str;
- long length;
-
- str = GetClipboardData("TEXT", &length, time);
- if (!str) {
- str = new char[1];
- *str = 0;
- }
-
- return str;
-}
+ wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );
-char *wxClipboard::GetClipboardData(char *format, long *length, long time)
-{
- if (clipOwner) {
- if (clipOwner->formats.Member(format))
- return clipOwner->GetData(format, length);
- else
- return NULL;
- } else if (cbString) {
- if (!strcmp(format, "TEXT"))
- return copystring(cbString);
- else
- return NULL;
- } else {
- if (wxOpenClipboard()) {
- receivedString = (char *)wxGetClipboardData(FormatStringToID(format),
- length);
- wxCloseClipboard();
- } else
- receivedString = NULL;
-
- return receivedString;
+ 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;
+
+#if 0
+ 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();
+#endif
+
+ 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
+ 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;
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: format found, start convert") );
+
+#if 0
+ gtk_selection_convert( m_clipboardWidget,
+ m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
+ : g_clipboardAtom,
+ m_targetRequested,
+ (guint32) GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+#endif
+
+ /* 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;
}
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: format not found") );
+
+ /* return failure */
+ delete[] array;
+ return false;
}
-#endif
-#endif // wxUSE_CLIPBOARD
+#endif
+ // wxUSE_CLIPBOARD
projects / wxWidgets.git / blobdiff