#include <fstream>
#include <iomanip>
+#include <QTimer>
+
using namespace std;
using namespace lyx::support;
/// \p wait whether to wait for the process to complete or, instead,
/// to do it in the background.
void startLoading(bool wait = false);
+ ///
+ void refreshPreviews();
/// Emit this signal when an image is ready for display.
boost::signal<void(PreviewImage const &)> imageReady;
Buffer const & buffer_;
///
mutable int font_scaling_factor_;
+ ///
+ mutable int fg_color_;
+ ///
+ mutable int bg_color_;
+ ///
+ QTimer * delay_refresh_;
+ ///
+ bool finished_generating_;
/// We don't own this
static lyx::Converter const * pconverter_;
}
+void PreviewLoader::refreshPreviews()
+{
+ pimpl_->refreshPreviews();
+}
+
+
boost::signals::connection PreviewLoader::connect(slot_type const & slot) const
{
return pimpl_->imageReady.connect(slot);
namespace graphics {
PreviewLoader::Impl::Impl(PreviewLoader & p, Buffer const & b)
- : parent_(p), buffer_(b)
+ : parent_(p), buffer_(b), finished_generating_(true)
{
font_scaling_factor_ = int(buffer_.fontScalingFactor());
+ if (theApp()) {
+ fg_color_ = strtol(theApp()->hexName(foregroundColor()).c_str(), 0, 16);
+ bg_color_ = strtol(theApp()->hexName(backgroundColor()).c_str(), 0, 16);
+ } else {
+ fg_color_ = 0x0;
+ bg_color_ = 0xffffff;
+ }
if (!pconverter_)
pconverter_ = setConverter("lyxpreview");
+
+ delay_refresh_ = new QTimer(&parent_);
+ delay_refresh_->setSingleShot(true);
+ QObject::connect(delay_refresh_, SIGNAL(timeout()),
+ &parent_, SLOT(refreshPreviews()));
}
PreviewLoader::Impl::~Impl()
{
+ delete delay_refresh_;
+
InProgressProcesses::iterator ipit = in_progress_.begin();
InProgressProcesses::iterator ipend = in_progress_.end();
PreviewLoader::Impl::preview(string const & latex_snippet) const
{
int fs = int(buffer_.fontScalingFactor());
- if (font_scaling_factor_ != fs) {
- // Refresh all previews on zoom changes
- font_scaling_factor_ = fs;
- Cache::const_iterator cit = cache_.begin();
- Cache::const_iterator cend = cache_.end();
- while (cit != cend) {
- string const snippet = (cit++)->first;
- parent_.remove(snippet);
- parent_.add(snippet);
- }
- parent_.startLoading(false);
+ int fg = 0x0;
+ int bg = 0xffffff;
+ if (theApp()) {
+ fg = strtol(theApp()->hexName(foregroundColor()).c_str(), 0, 16);
+ bg = strtol(theApp()->hexName(backgroundColor()).c_str(), 0, 16);
+ }
+ if (font_scaling_factor_ != fs || fg_color_ != fg || bg_color_ != bg) {
+ // Schedule refresh of all previews on zoom or color changes.
+ // The previews are regenerated only after the zoom factor
+ // has not been changed for about 1 second.
+ fg_color_ = fg;
+ bg_color_ = bg;
+ delay_refresh_->start(1000);
}
+ // Don't try to access the cache until we are done.
+ if (delay_refresh_->isActive() || !finished_generating_)
+ return 0;
Cache::const_iterator it = cache_.find(latex_snippet);
return (it == cache_.end()) ? 0 : it->second.get();
}
+void PreviewLoader::Impl::refreshPreviews()
+{
+ font_scaling_factor_ = int(buffer_.fontScalingFactor());
+ // Reschedule refresh until the previous process completed.
+ if (!finished_generating_) {
+ delay_refresh_->start(1000);
+ return;
+ }
+ Cache::const_iterator cit = cache_.begin();
+ Cache::const_iterator cend = cache_.end();
+ while (cit != cend)
+ parent_.remove((cit++)->first);
+ finished_generating_ = false;
+ buffer_.updatePreviews();
+}
+
+
namespace {
class FindSnippet {
}
of << "\\batchmode\n";
+ // Set \jobname of previews to the document name (see bug 9627)
+ of << "\\def\\jobname{"
+ << from_utf8(changeExtension(buffer_.latexName(true), ""))
+ << "}\n";
+
LYXERR(Debug::LATEX, "Format = " << buffer_.params().getDefaultOutputFormat());
string latexparam = "";
- OutputParams::FLAVOR flavor = buffer_.params().getOutputFlavor();
+ bool docformat = !buffer_.params().default_output_format.empty()
+ && buffer_.params().default_output_format != "default";
+ // Use LATEX flavor if the document does not specify a specific
+ // output format (see bug 9371).
+ OutputParams::FLAVOR flavor = docformat
+ ? buffer_.params().getOutputFlavor()
+ : OutputParams::LATEX;
if (buffer_.params().encoding().package() == Encoding::japanese) {
latexparam = " --latex=platex";
flavor = OutputParams::LATEX;
string const command = cs.str();
if (wait) {
- ForkedCall call(buffer_.filePath());
+ ForkedCall call(buffer_.filePath(), buffer_.layoutPos());
int ret = call.startScript(ForkedProcess::Wait, command);
// FIXME THREAD
static int fake = (2^20) + 1;
if (git == in_progress_.end()) {
lyxerr << "PreviewLoader::finishedGenerating(): unable to find "
"data for PID " << pid << endl;
+ finished_generating_ = true;
return;
}
LYXERR(Debug::GRAPHICS, "PreviewLoader::finishedInProgress("
<< retval << "): processing " << status
<< " for " << command);
- if (retval > 0)
+ if (retval > 0) {
+ in_progress_.erase(git);
+ finished_generating_ = true;
return;
+ }
// Read the metrics file, if it exists
vector<double> ascent_fractions(git->second.snippets.size());
double af = ascent_fractions[metrics_counter];
// Add the image to the cache only if it's actually present
- if (file.isReadableFile()) {
+ // and not empty (an empty image is signaled by af < 0)
+ if (af >= 0 && file.isReadableFile()) {
PreviewImagePtr ptr(new PreviewImage(parent_, snip, file, af));
cache_[snip] = ptr;
for (; nit != nend; ++nit) {
imageReady(*nit->get());
}
+ finished_generating_ = true;
}
} // namespace graphics
} // namespace lyx
+
+#include "moc_PreviewLoader.cpp"
projects / lyx.git / blobdiff