#include <config.h>
+#include "FileDialog.h"
+
#include "GuiClipboard.h"
#include "qt_helpers.h"
+#include "Buffer.h"
+#include "BufferView.h"
+#include "Cursor.h"
+
+#include "support/lassert.h"
+#include "support/convert.h"
#include "support/debug.h"
+#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"
+#endif // Q_WS_MACX
+
+#include "frontends/alert.h"
#include <QApplication>
+#include <QBuffer>
#include <QClipboard>
+#include <QDataStream>
+#include <QFile>
+#include <QImage>
#include <QMimeData>
#include <QString>
+#include <QStringList>
-#include "support/lstrings.h"
+#include <memory>
+#include <map>
+#include <iostream>
using namespace std;
using namespace lyx::support;
-static char const * const mime_type = "application/x-lyx";
namespace lyx {
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"; }
+QString const emfMimeType(){ return "image/x-emf"; }
+QString const wmfMimeType(){ return "image/x-wmf"; }
+
+
GuiClipboard::GuiClipboard()
{
connect(qApp->clipboard(), SIGNAL(dataChanged()),
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(mime_type)) {
+ if (cache_.hasFormat(lyxMimeType())) {
// data from ourself or some other LyX instance
- QByteArray const ar = source->data(mime_type);
+ QByteArray const ar = cache_.data(lyxMimeType());
string const s(ar.data(), ar.count());
LYXERR(Debug::ACTION, s << "'");
return s;
}
+FileName GuiClipboard::getPastedGraphicsFileName(Cursor const & cur,
+ Clipboard::GraphicsType & type) const
+{
+ // create file dialog filter according to the existing types in the clipboard
+ vector<Clipboard::GraphicsType> types;
+ if (hasGraphicsContents(Clipboard::EmfGraphicsType))
+ types.push_back(Clipboard::EmfGraphicsType);
+ if (hasGraphicsContents(Clipboard::WmfGraphicsType))
+ types.push_back(Clipboard::WmfGraphicsType);
+ if (hasGraphicsContents(Clipboard::LinkBackGraphicsType))
+ types.push_back(Clipboard::LinkBackGraphicsType);
+ if (hasGraphicsContents(Clipboard::PdfGraphicsType))
+ types.push_back(Clipboard::PdfGraphicsType);
+ if (hasGraphicsContents(Clipboard::PngGraphicsType))
+ types.push_back(Clipboard::PngGraphicsType);
+ if (hasGraphicsContents(Clipboard::JpegGraphicsType))
+ types.push_back(Clipboard::JpegGraphicsType);
+
+ LASSERT(!types.empty(), /**/);
+
+ // select prefered type if AnyGraphicsType was passed
+ if (type == Clipboard::AnyGraphicsType)
+ type = types.front();
+
+ // which extension?
+ map<Clipboard::GraphicsType, string> extensions;
+ map<Clipboard::GraphicsType, docstring> typeNames;
+
+ extensions[Clipboard::EmfGraphicsType] = "emf";
+ extensions[Clipboard::WmfGraphicsType] = "wmf";
+ extensions[Clipboard::LinkBackGraphicsType] = "linkback";
+ extensions[Clipboard::PdfGraphicsType] = "pdf";
+ extensions[Clipboard::PngGraphicsType] = "png";
+ extensions[Clipboard::JpegGraphicsType] = "jpeg";
+
+ typeNames[Clipboard::EmfGraphicsType] = _("Enhanced Metafile");
+ typeNames[Clipboard::WmfGraphicsType] = _("Windows Metafile");
+ typeNames[Clipboard::LinkBackGraphicsType] = _("LinkBack PDF");
+ typeNames[Clipboard::PdfGraphicsType] = _("PDF");
+ typeNames[Clipboard::PngGraphicsType] = _("PNG");
+ typeNames[Clipboard::JpegGraphicsType] = _("JPEG");
+
+ // find unused filename with primary extension
+ string document_path = cur.buffer()->fileName().onlyPath().absFileName();
+ unsigned newfile_number = 0;
+ FileName filename;
+ do {
+ ++newfile_number;
+ filename = FileName(addName(document_path,
+ to_utf8(_("pasted"))
+ + convert<string>(newfile_number) + "."
+ + extensions[type]));
+ } while (filename.isReadableFile());
+
+ while (true) {
+ // create file type filter, putting the prefered on to the front
+ QStringList filter;
+ for (size_t i = 0; i != types.size(); ++i) {
+ docstring s = bformat(_("%1$s Files"), typeNames[types[i]])
+ + " (*." + from_ascii(extensions[types[i]]) + ")";
+ if (types[i] == type)
+ filter.prepend(toqstr(s));
+ else
+ filter.append(toqstr(s));
+ }
+ filter = fileFilters(filter.join(";;"));
+
+ // show save dialog for the graphic
+ FileDialog dlg(qt_("Choose a filename to save the pasted graphic as"));
+ FileDialog::Result result =
+ dlg.save(toqstr(filename.onlyPath().absFileName()), filter,
+ toqstr(filename.onlyFileName()));
+
+ if (result.first == FileDialog::Later)
+ return FileName();
+
+ string newFilename = fromqstr(result.second);
+ if (newFilename.empty()) {
+ cur.bv().message(_("Canceled."));
+ return FileName();
+ }
+ filename.set(newFilename);
+
+ // check the extension (the user could have changed it)
+ if (!suffixIs(ascii_lowercase(filename.absFileName()),
+ "." + extensions[type])) {
+ // the user changed the extension. Check if the type is available
+ size_t i;
+ for (i = 1; i != types.size(); ++i) {
+ if (suffixIs(ascii_lowercase(filename.absFileName()),
+ "." + extensions[types[i]])) {
+ type = types[i];
+ break;
+ }
+ }
+
+ // invalid extension found, or none at all. In the latter
+ // case set the default extensions.
+ if (i == types.size()
+ && filename.onlyFileName().find('.') == string::npos) {
+ filename.changeExtension("." + extensions[type]);
+ }
+ }
+
+ // check whether the file exists and warn the user
+ if (!filename.exists())
+ break;
+ int ret = frontend::Alert::prompt(
+ _("Overwrite external file?"),
+ bformat(_("File %1$s already exists, do you want to overwrite it?"),
+ from_utf8(filename.absFileName())), 1, 1, _("&Overwrite"), _("&Cancel"));
+ if (ret == 0)
+ // overwrite, hence break the dialog loop
+ break;
+
+ // not overwrite, hence show the dialog again (i.e. loop)
+ }
+
+ return filename;
+}
+
+
+FileName GuiClipboard::getAsGraphics(Cursor const & cur, GraphicsType type) const
+{
+ // get the filename from the user
+ FileName filename = getPastedGraphicsFileName(cur, type);
+ if (filename.empty())
+ return FileName();
+
+ // handle image cases first
+ if (type == PngGraphicsType || type == JpegGraphicsType) {
+ // get image from QImage from clipboard
+ QImage image = qApp->clipboard()->image();
+ if (image.isNull()) {
+ LYXERR(Debug::ACTION, "No image in clipboard");
+ return FileName();
+ }
+
+ // convert into graphics format
+ QByteArray ar;
+ QBuffer buffer(&ar);
+ buffer.open(QIODevice::WriteOnly);
+ if (type == PngGraphicsType)
+ image.save(toqstr(filename.absFileName()), "PNG");
+ else if (type == JpegGraphicsType)
+ image.save(toqstr(filename.absFileName()), "JPEG");
+ else
+ LASSERT(false, /**/);
+
+ return filename;
+ }
+
+ // get mime for type
+ QString mime;
+ switch (type) {
+ case PdfGraphicsType: mime = pdfMimeType(); break;
+ case LinkBackGraphicsType: mime = pdfMimeType(); break;
+ case EmfGraphicsType: mime = emfMimeType(); break;
+ case WmfGraphicsType: mime = wmfMimeType(); break;
+ default: LASSERT(false, /**/);
+ }
+
+ // get data
+ if (!cache_.hasFormat(mime))
+ return FileName();
+ // data from ourself or some other LyX instance
+ QByteArray const ar = cache_.data(mime);
+ LYXERR(Debug::ACTION, "Getting from clipboard: mime = " << mime.data()
+ << "length = " << ar.count());
+
+ QFile f(toqstr(filename.absFileName()));
+ if (!f.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
+ LYXERR(Debug::ACTION, "Error opening file "
+ << filename.absFileName() << " for writing");
+ return FileName();
+ }
+
+ // write the (LinkBack) PDF data
+ f.write(ar);
+ if (type == LinkBackGraphicsType) {
+#ifdef Q_WS_MACX
+ void const * linkBackData;
+ unsigned linkBackLen;
+ getLinkBackData(&linkBackData, &linkBackLen);
+ f.write((char *)linkBackData, linkBackLen);
+ quint32 pdfLen = ar.size();
+ QDataStream ds(&f);
+ ds << pdfLen; // big endian by default
+#else
+ // only non-Mac this should never happen
+ LASSERT(false, /**/);
+#endif // Q_WS_MACX
+ }
+
+ f.close();
+ return filename;
+}
+
+
docstring const GuiClipboard::getAsText() const
{
// text data from other applications
QString const str = qApp->clipboard()->text(QClipboard::Clipboard)
.normalized(QString::NormalizationForm_C);
- LYXERR(Debug::ACTION, "GuiClipboard::getAsText(): `" << fromqstr(str) << "'");
+ LYXERR(Debug::ACTION, "GuiClipboard::getAsText(): `" << str << "'");
if (str.isNull())
return docstring();
- return internalLineEnding(qstring_to_ucs4(str));
+ return internalLineEnding(str);
}
QMimeData * data = new QMimeData;
if (!lyx.empty()) {
QByteArray const qlyx(lyx.c_str(), lyx.size());
- data->setData(mime_type, qlyx);
+ data->setData(lyxMimeType(), qlyx);
}
// 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(mime_type);
+ return cache_.hasFormat(lyxMimeType());
+}
+
+
+bool GuiClipboard::hasTextContents() const
+{
+ return cache_.hasText();
+}
+
+
+bool GuiClipboard::hasGraphicsContents(Clipboard::GraphicsType type) const
+{
+ if (type == AnyGraphicsType) {
+ return hasGraphicsContents(PdfGraphicsType)
+ || hasGraphicsContents(PngGraphicsType)
+ || hasGraphicsContents(JpegGraphicsType)
+ || hasGraphicsContents(EmfGraphicsType)
+ || hasGraphicsContents(WmfGraphicsType)
+ || hasGraphicsContents(LinkBackGraphicsType);
+ }
+
+ // handle image cases first
+ if (type == PngGraphicsType || type == JpegGraphicsType)
+ return cache_.hasImage();
+
+ // handle LinkBack for Mac
+ if (type == LinkBackGraphicsType)
+#ifdef Q_WS_MACX
+ return isLinkBackDataInPasteboard();
+#else
+ return false;
+#endif // Q_WS_MACX
+
+ // get mime data
+ 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]);
+
+ // compute mime for type
+ QString mime;
+ switch (type) {
+ case EmfGraphicsType: mime = emfMimeType(); break;
+ case WmfGraphicsType: mime = wmfMimeType(); break;
+ case PdfGraphicsType: mime = pdfMimeType(); break;
+ default: LASSERT(false, /**/);
+ }
+
+ return cache_.hasFormat(mime);
}
}
+bool GuiClipboard::hasInternal() const
+{
+ // 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))
+ return true;
+#else
+ return false;
+#endif
+}
+
+
void GuiClipboard::on_dataChanged()
{
+ //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));
+
text_clipboard_empty_ = qApp->clipboard()->
text(QClipboard::Clipboard).isEmpty();
has_lyx_contents_ = hasLyXContents();
+ has_graphics_contents_ = hasGraphicsContents();
}
// clipboard does not come from LyX.
if (!text_clipboard_empty_)
return false;
- return !has_lyx_contents_;
+ return !has_lyx_contents_ && !has_graphics_contents_;
}
} // namespace frontend
} // namespace lyx
-#include "GuiClipboard_moc.cpp"
+#include "moc_GuiClipboard.cpp"
projects / lyx.git / blobdiff