/**
* \file GraphicsLoader.C
- * Read the file COPYING
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
*
- * \author Angus Leeming
+ * \author Angus Leeming
*
- * Full author contact details available in file CREDITS
+ * Full author contact details are available in file CREDITS
*/
#include <config.h>
-#ifdef __GNUG__
-#pragma implementation
-#endif
-
#include "GraphicsLoader.h"
-#include "BufferView.h"
-
#include "GraphicsCache.h"
#include "GraphicsCacheItem.h"
#include "GraphicsImage.h"
#include "GraphicsParams.h"
-#include "GraphicsSupport.h"
+#include "LoaderQueue.h"
#include "frontends/LyXView.h"
-#include "frontends/Timeout.h"
-#include <boost/weak_ptr.hpp>
#include <boost/bind.hpp>
#include <boost/signals/trackable.hpp>
struct Loader::Impl : boost::signals::trackable {
///
- Impl(Params const &);
+ Impl();
///
~Impl();
///
void resetParams(Params const &);
///
void createPixmap();
-
///
- void startLoading(Inset const &, BufferView const &);
+ void startLoading();
+ ///
+ Params const & params() const { return params_; }
/// The loading status of the image.
ImageStatus status_;
///
Params params_;
- ///
- Timeout timer;
- // Multiple Insets can share the same image
- typedef std::list<Inset const *> InsetList;
- ///
- InsetList insets;
- ///
- boost::weak_ptr<BufferView const> view;
};
Loader::Loader()
- : pimpl_(new Impl(Params()))
+ : pimpl_(new Impl)
{}
Loader::Loader(string const & file, DisplayType type)
- : pimpl_(new Impl(Params()))
+ : pimpl_(new Impl)
{
reset(file, type);
}
Loader::Loader(string const & file, Params const & params)
- : pimpl_(new Impl(params))
+ : pimpl_(new Impl)
{
reset(file, params);
}
+Loader::Loader(Loader const & other)
+ : pimpl_(new Impl)
+{
+ Params const & params = other.pimpl_->params();
+ reset(params.filename, params);
+}
+
+
Loader::~Loader()
{}
+Loader & Loader::operator=(Loader const & other)
+{
+ if (this != &other) {
+ Params const & params = other.pimpl_->params();
+ reset(params.filename, params);
+ }
+ return *this;
+}
+
+
void Loader::reset(string const & file, DisplayType type) const
{
Params params;
{
if (pimpl_->status_ != WaitingToLoad || !pimpl_->cached_item_.get())
return;
- pimpl_->cached_item_->startLoading();
-}
-
-
-void Loader::startLoading(Inset const & inset, BufferView const & bv) const
-{
- if (pimpl_->status_ != WaitingToLoad || !pimpl_->cached_item_.get())
- return;
- pimpl_->startLoading(inset, bv);
+ pimpl_->startLoading();
}
}
-Loader::Impl::Impl(Params const & params)
- : status_(WaitingToLoad), params_(params),
- timer(2000, Timeout::ONETIME)
+Loader::Impl::Impl()
+ : status_(WaitingToLoad)
{
- timer.timeout.connect(boost::bind(&Impl::checkedLoading, this));
}
}
}
-
-void Loader::Impl::startLoading(Inset const & inset, BufferView const & bv)
+void Loader::Impl::startLoading()
{
- if (status_ != WaitingToLoad || timer.running())
+ if (status_ != WaitingToLoad)
return;
- InsetList::const_iterator it = insets.begin();
- InsetList::const_iterator end = insets.end();
- it = std::find(it, end, &inset);
- if (it == end)
- insets.push_back(&inset);
- view = bv.owner()->view();
-
- timer.start();
-}
-
-
-namespace {
-
-struct FindVisibleInset {
-
- FindVisibleInset(std::list<VisibleParagraph> const & vps) : vps_(vps) {}
-
- bool operator()(Inset const * inset_ptr)
- {
- if (!inset_ptr)
- return false;
- return isInsetVisible(*inset_ptr, vps_);
- }
-
-private:
- std::list<VisibleParagraph> const & vps_;
-};
-
-} // namespace anon
-
-
-void Loader::Impl::checkedLoading()
-{
- if (insets.empty() || !view.get())
- return;
-
- std::list<VisibleParagraph> const vps =
- getVisibleParagraphs(*view.get());
-
- InsetList::const_iterator it = insets.begin();
- InsetList::const_iterator end = insets.end();
-
- it = std::find_if(it, end, FindVisibleInset(vps));
-
- // One of the insets is visible, so start loading the image.
- if (it != end)
- cached_item_->startLoading();
+ LoaderQueue::get().touch(cached_item_);
}