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// SDPGTK Library
// Copyright (c) 1995-2004, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\brief Implements the sdpGtkClipboard class, which makes it easy to synchronously retrieve data from the clipboard (primary X selection)
\author Timothy M. Shead (tshead@k-3d.com)
*/
#include "sdpgtkclipboard.h"
#include "sdpgtkevents.h"
#include "sdpgtkutility.h"
#ifdef SDPWIN32
#include <windows.h>
#endif
#include <cassert>
namespace sdpgtk
{
sdpxml::Document& clipboard_template()
{
static sdpxml::Document gtkml("empty");
if(gtkml.Name() == "empty")
{
std::istringstream uitemplate(
"<gtkml>"
"<window type=\"toplevel\" show=\"false\">"
"<event signal=\"selection-received\" name=\"selectionreceived\"/>"
"</window>"
"</gtkml>\n");
assert(gtkml.Load(uitemplate, "sdpGtkClipboard builtin template"));
}
return gtkml;
}
} // namespace sdpgtk
/////////////////////////////////////////////////////////////////////////////////////////////////
// sdpGtkClipboard
sdpGtkClipboard::sdpGtkClipboard() :
sdpGtkClipboardBase(),
m_Waiting(false),
m_ContainsData(false)
{
// Create and load our UI template ...
g_return_if_fail(Load(sdpgtk::clipboard_template()));
}
sdpGtkClipboard::~sdpGtkClipboard()
{
RootWidget().Destroy();
}
bool sdpGtkClipboard::StartSelection()
{
// Get ready to loop, waiting for results ...
m_Waiting = true;
// Don't assume success until we're sure ...
m_ContainsData = false;
// Start the selection process ...
g_return_val_if_fail(RequestSelection(), false);
// Enter our loop, waiting for results ...
while(m_Waiting)
sdpGtkHandlePendingEvents();
return m_ContainsData;
}
void sdpGtkClipboard::OnEvent(sdpGtkEvent* Event)
{
// Sanity checks ...
g_assert(Event);
if(Event->Name() == "selectionreceived")
{
m_Waiting = false;
m_ContainsData = ReceiveSelection(Event);
}
else
sdpGtkClipboardBase::OnEvent(Event);
}
/////////////////////////////////////////////////////////////////////////////////////////////////
// sdpGtkClipboardText
const sdpString& sdpGtkClipboardText::GetText()
{
StartSelection();
return m_Text;
}
bool sdpGtkClipboardText::RequestSelection()
{
// Cleanup leftovers ...
m_Text.clear();
#ifdef SDPWIN32
g_return_val_if_fail(OpenClipboard(0), false);
g_return_val_if_fail(GetClipboardData(CF_TEXT), false);
m_Text = static_cast<char*>(GetClipboardData(CF_TEXT));
g_return_val_if_fail(CloseClipboard(), false);
m_Waiting = false;
m_ContainsData = true;
#else // SDPWIN32
// Request the primary X selection as text ...
g_return_val_if_fail(gtk_selection_convert(RootWidget(), gdk_atom_intern("CLIPBOARD", false), gdk_atom_intern("STRING", false), GDK_CURRENT_TIME), false);
#endif // !SDPWIN32
return true;
}
bool sdpGtkClipboardText::ReceiveSelection(sdpGtkEvent* Event)
{
// Get the selection as text ...
sdpGtkEventWidgetSelectionReceived* event = static_cast<sdpGtkEventWidgetSelectionReceived*>(Event);
GtkSelectionData* selection = event->Selection();
g_return_val_if_fail(selection->length >= 0, false);
m_Text = reinterpret_cast<char*>(selection->data);
return true;
}
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