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- /* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
- * Copyright 2012-2019 Pierre Ossman for Cendio AB
- *
- * This 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
- * (at your option) any later version.
- *
- * This software 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 software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
- // -=- Clipboard.cxx
-
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
-
- #include <rfb_win32/Clipboard.h>
- #include <rfb_win32/WMShatter.h>
- #include <rfb/util.h>
-
- #include <rfb/LogWriter.h>
-
- using namespace rfb;
- using namespace rfb::win32;
-
- static LogWriter vlog("Clipboard");
-
- //
- // -=- Clipboard object
- //
-
- Clipboard::Clipboard()
- : MsgWindow("Clipboard"), notifier(0), next_window(0) {
- next_window = SetClipboardViewer(getHandle());
- vlog.debug("registered clipboard handler");
- }
-
- Clipboard::~Clipboard() {
- vlog.debug("removing %p from chain (next is %p)", getHandle(), next_window);
- ChangeClipboardChain(getHandle(), next_window);
- }
-
- LRESULT
- Clipboard::processMessage(UINT msg, WPARAM wParam, LPARAM lParam) {
- switch (msg) {
-
- case WM_CHANGECBCHAIN:
- vlog.debug("change clipboard chain (%I64x, %I64x)",
- (long long)wParam, (long long)lParam);
- if ((HWND) wParam == next_window)
- next_window = (HWND) lParam;
- else if (next_window != 0)
- SendMessage(next_window, msg, wParam, lParam);
- else
- vlog.error("bad clipboard chain change!");
- break;
-
- case WM_DRAWCLIPBOARD:
- {
- HWND owner = GetClipboardOwner();
- if (owner == getHandle()) {
- vlog.debug("local clipboard changed by me");
- } else {
- vlog.debug("local clipboard changed by %p", owner);
-
- if (notifier == NULL)
- vlog.debug("no clipboard notifier registered");
- else
- notifier->notifyClipboardChanged(IsClipboardFormatAvailable(CF_UNICODETEXT));
- }
- }
- if (next_window)
- SendMessage(next_window, msg, wParam, lParam);
- return 0;
-
- };
- return MsgWindow::processMessage(msg, wParam, lParam);
- };
-
- std::string
- Clipboard::getClipText() {
- HGLOBAL cliphandle;
- wchar_t* clipdata;
- std::string utf8;
-
- // Open the clipboard
- if (!OpenClipboard(getHandle()))
- return NULL;
-
- // Get the clipboard data
- cliphandle = GetClipboardData(CF_UNICODETEXT);
- if (!cliphandle) {
- CloseClipboard();
- return NULL;
- }
-
- clipdata = (wchar_t*) GlobalLock(cliphandle);
- if (!clipdata) {
- CloseClipboard();
- return NULL;
- }
-
- // Convert it to UTF-8
- utf8 = utf16ToUTF8(clipdata);
-
- // Release the buffer and close the clipboard
- GlobalUnlock(cliphandle);
- CloseClipboard();
-
- return convertLF(utf8.c_str());
- }
-
- void
- Clipboard::setClipText(const char* text) {
- HANDLE clip_handle = 0;
-
- try {
-
- // - Firstly, we must open the clipboard
- if (!OpenClipboard(getHandle()))
- throw rdr::SystemException("unable to open Win32 clipboard", GetLastError());
-
- // - Convert the supplied clipboard text into UTF-16 format with CRLF
- std::string filtered(convertCRLF(text));
- std::wstring utf16(utf8ToUTF16(filtered.c_str()));
-
- // - Allocate global memory for the data
- clip_handle = ::GlobalAlloc(GMEM_MOVEABLE, (utf16.size() + 1) * 2);
-
- wchar_t* data = (wchar_t*) GlobalLock(clip_handle);
- wcscpy(data, utf16.c_str());
- GlobalUnlock(clip_handle);
-
- // - Next, we must clear out any existing data
- if (!EmptyClipboard())
- throw rdr::SystemException("unable to empty Win32 clipboard", GetLastError());
-
- // - Set the new clipboard data
- if (!SetClipboardData(CF_UNICODETEXT, clip_handle))
- throw rdr::SystemException("unable to set Win32 clipboard", GetLastError());
- clip_handle = 0;
-
- vlog.debug("set clipboard");
- } catch (rdr::Exception& e) {
- vlog.debug("%s", e.str());
- }
-
- // - Close the clipboard
- if (!CloseClipboard())
- vlog.debug("unable to close Win32 clipboard: %lu", GetLastError());
- else
- vlog.debug("closed clipboard");
- if (clip_handle) {
- vlog.debug("freeing clipboard handle");
- GlobalFree(clip_handle);
- }
- }
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