#include "support/filetools.h"
#include "support/gettext.h"
#include "support/lstrings.h"
+#include "support/lyxtime.h"
#ifdef Q_WS_MACX
#include "support/linkback/LinkBackProxy.h"
#include <QString>
#include <QStringList>
+#include <boost/crc.hpp>
+
#include <memory>
#include <map>
+#include <iostream>
using namespace std;
using namespace lyx::support;
namespace frontend {
+static QMimeData const * read_clipboard()
+{
+ LYXERR(Debug::ACTION, "Getting Clipboard");
+ QMimeData const * source =
+ qApp->clipboard()->mimeData(QClipboard::Clipboard);
+ if (!source) {
+ LYXERR0("0 bytes (no QMimeData)");
+ return new QMimeData();
+ }
+ // It appears that doing IO between getting a mimeData object
+ // and using it can cause a crash (maybe Qt used IO
+ // as an excuse to free() it? Anyway let's not introduce
+ // any new IO here, so e.g. leave the following line commented.
+ // lyxerr << "Got Clipboard (" << (long) source << ")\n" ;
+ return source;
+}
+
+
+void CacheMimeData::update()
+{
+ time_t const start_time = current_time();
+ LYXERR(Debug::ACTION, "Creating CacheMimeData object");
+ cached_formats_ = read_clipboard()->formats();
+
+ // Qt times out after 5 seconds if it does not recieve a response.
+ if (current_time() - start_time > 3) {
+ LYXERR0("No timely response from clipboard, perhaps process "
+ << "holding clipboard is frozen?");
+ }
+}
+
+
+QByteArray CacheMimeData::data(QString const & mimeType) const
+{
+ return read_clipboard()->data(mimeType);
+}
+
QString const lyxMimeType(){ return "application/x-lyx"; }
QString const pdfMimeType(){ return "application/pdf"; }
LYXERR(Debug::ACTION, "GuiClipboard::getAsLyX(): `");
// We don't convert encodings here since the encoding of the
// clipboard contents is specified in the data itself
- QMimeData const * source =
- qApp->clipboard()->mimeData(QClipboard::Clipboard);
- if (!source) {
- LYXERR(Debug::ACTION, "' (no QMimeData)");
- return string();
- }
-
- if (source->hasFormat(lyxMimeType())) {
+ if (cache_.hasFormat(lyxMimeType())) {
// data from ourself or some other LyX instance
- QByteArray const ar = source->data(lyxMimeType());
+ QByteArray const ar = cache_.data(lyxMimeType());
string const s(ar.data(), ar.count());
LYXERR(Debug::ACTION, s << "'");
return s;
typeNames[Clipboard::JpegGraphicsType] = _("JPEG");
// find unused filename with primary extension
- string document_path = cur.buffer().fileName().onlyPath().absFilename();
+ string document_path = cur.buffer()->fileName().onlyPath().absFileName();
unsigned newfile_number = 0;
FileName filename;
do {
// show save dialog for the graphic
FileDialog dlg(qt_("Choose a filename to save the pasted graphic as"));
FileDialog::Result result =
- dlg.save(toqstr(filename.onlyPath().absFilename()), filter,
+ dlg.save(toqstr(filename.onlyPath().absFileName()), filter,
toqstr(filename.onlyFileName()));
if (result.first == FileDialog::Later)
filename.set(newFilename);
// check the extension (the user could have changed it)
- if (!suffixIs(ascii_lowercase(filename.absFilename()),
+ if (!suffixIs(ascii_lowercase(filename.absFileName()),
"." + extensions[type])) {
// the user changed the extension. Check if the type is available
size_t i;
for (i = 1; i != types.size(); ++i) {
- if (suffixIs(ascii_lowercase(filename.absFilename()),
+ if (suffixIs(ascii_lowercase(filename.absFileName()),
"." + extensions[types[i]])) {
type = types[i];
break;
int ret = frontend::Alert::prompt(
_("Overwrite external file?"),
bformat(_("File %1$s already exists, do you want to overwrite it?"),
- from_utf8(filename.absFilename())), 1, 1, _("&Overwrite"), _("&Cancel"));
+ from_utf8(filename.absFileName())), 1, 1, _("&Overwrite"), _("&Cancel"));
if (ret == 0)
// overwrite, hence break the dialog loop
break;
QBuffer buffer(&ar);
buffer.open(QIODevice::WriteOnly);
if (type == PngGraphicsType)
- image.save(toqstr(filename.absFilename()), "PNG");
+ image.save(toqstr(filename.absFileName()), "PNG");
else if (type == JpegGraphicsType)
- image.save(toqstr(filename.absFilename()), "JPEG");
+ image.save(toqstr(filename.absFileName()), "JPEG");
else
LASSERT(false, /**/);
return filename;
}
- // get mime data
- QMimeData const * source =
- qApp->clipboard()->mimeData(QClipboard::Clipboard);
- if (!source) {
- LYXERR(Debug::ACTION, "0 bytes (no QMimeData)");
- return FileName();
- }
-
// get mime for type
QString mime;
switch (type) {
}
// get data
- if (!source->hasFormat(mime))
+ if (!cache_.hasFormat(mime))
return FileName();
// data from ourself or some other LyX instance
- QByteArray const ar = source->data(mime);
+ QByteArray const ar = cache_.data(mime);
LYXERR(Debug::ACTION, "Getting from clipboard: mime = " << mime.data()
<< "length = " << ar.count());
- QFile f(toqstr(filename.absFilename()));
+ QFile f(toqstr(filename.absFileName()));
if (!f.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
LYXERR(Debug::ACTION, "Error opening file "
- << filename.absFilename() << " for writing");
+ << filename.absFileName() << " for writing");
return FileName();
}
if (!lyx.empty()) {
QByteArray const qlyx(lyx.c_str(), lyx.size());
data->setData(lyxMimeType(), qlyx);
+ // If the OS has not the concept of clipboard ownership,
+ // we recognize internal data through its checksum.
+ if (!hasInternal()) {
+ boost::crc_32_type crc32;
+ crc32.process_bytes(lyx.c_str(), lyx.size());
+ checksum = crc32.checksum();
+ }
}
// Don't test for text.empty() since we want to be able to clear the
// clipboard.
bool GuiClipboard::hasLyXContents() const
{
- QMimeData const * const source =
- qApp->clipboard()->mimeData(QClipboard::Clipboard);
- return source && source->hasFormat(lyxMimeType());
+ return cache_.hasFormat(lyxMimeType());
+}
+
+
+bool GuiClipboard::hasTextContents() const
+{
+ return cache_.hasText();
}
|| hasGraphicsContents(LinkBackGraphicsType);
}
- QMimeData const * const source =
- qApp->clipboard()->mimeData(QClipboard::Clipboard);
-
// handle image cases first
if (type == PngGraphicsType || type == JpegGraphicsType)
- return source->hasImage();
+ return cache_.hasImage();
// handle LinkBack for Mac
if (type == LinkBackGraphicsType)
#endif // Q_WS_MACX
// get mime data
- QStringList const & formats = source->formats();
+ QStringList const & formats = cache_.formats();
LYXERR(Debug::ACTION, "We found " << formats.size() << " formats");
for (int i = 0; i < formats.size(); ++i)
LYXERR(Debug::ACTION, "Found format " << formats[i]);
default: LASSERT(false, /**/);
}
- return source && source->hasFormat(mime);
+ return cache_.hasFormat(mime);
}
bool GuiClipboard::isInternal() const
{
+ if (!hasLyXContents())
+ return false;
+
// ownsClipboard() is also true for stuff coming from dialogs, e.g.
- // the preamble dialog
- // FIXME: This does only work on X11, since ownsClipboard() is
- // hardwired to return false on Windows and OS X.
- return qApp->clipboard()->ownsClipboard() && hasLyXContents();
+ // the preamble dialog. This does only work on X11 and Windows, since
+ // ownsClipboard() is hardwired to return false on OS X.
+ if (hasInternal())
+ return qApp->clipboard()->ownsClipboard();
+
+ // We are running on OS X: Check whether clipboard data is from
+ // ourself by comparing its checksum with the stored one.
+ QByteArray const ar = cache_.data(lyxMimeType());
+ string const data(ar.data(), ar.count());
+ boost::crc_32_type crc32;
+ crc32.process_bytes(data.c_str(), data.size());
+ return checksum == crc32.checksum();
}
{
// Windows and Mac OS X does not have the concept of ownership;
// the clipboard is a fully global resource so all applications
- // are notified of changes.
-#if (defined(Q_WS_X11))
+ // are notified of changes. However, on Windows ownership is
+ // emulated by Qt through the OleIsCurrentClipboard() API, while
+ // on Mac OS X we deal with this issue by ourself.
+#if (defined(Q_WS_X11) || defined(Q_WS_WIN))
return true;
#else
return false;
void GuiClipboard::on_dataChanged()
{
- QMimeData const * const source =
- qApp->clipboard()->mimeData(QClipboard::Clipboard);
- QStringList l = source->formats();
+ //Note: we do not really need to run cache_.update() unless the
+ //data has been changed *and* the GuiClipboard has been queried.
+ //However if run cache_.update() the moment a process grabs the
+ //clipboard, the process holding the clipboard presumably won't
+ //yet be frozen, and so we won't need to wait 5 seconds for Qt
+ //to time-out waiting for the clipboard.
+ cache_.update();
+ QStringList l = cache_.formats();
LYXERR(Debug::ACTION, "Qt Clipboard changed. We found the following mime types:");
for (int i = 0; i < l.count(); i++)
LYXERR(Debug::ACTION, l.value(i));
} // namespace frontend
} // namespace lyx
-#include "GuiClipboard_moc.cpp"
+#include "moc_GuiClipboard.cpp"
projects / lyx.git / blobdiff