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Graphics cleanup: get rid of Previews.{h,cpp}

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The PreviewLoader is created directly by Buffer on demand. The PreviewLoader cache was complex and unneeded because there is one and only one PreviewLoader per Buffer.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@39276 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Abdelrazak Younes 2011-07-12 12:43:11 +00:00
parent 034a03b0f5
commit 850e4d80c0
10 changed files with 59 additions and 195 deletions
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45
src/Buffer.cpp
View File

@ -77,12 +77,12 @@
#include "mathed/MathMacroTemplate.h"
#include "mathed/MathSupport.h"
#include "graphics/PreviewLoader.h"
#include "frontends/alert.h"
#include "frontends/Delegates.h"
#include "frontends/WorkAreaManager.h"
#include "graphics/Previews.h"
#include "support/lassert.h"
#include "support/convert.h"
#include "support/debug.h"
@ -117,6 +117,7 @@
using namespace std;
using namespace lyx::support;
using namespace lyx::graphics;
namespace lyx {
@ -150,6 +151,7 @@ public:
~Impl()
{
delete preview_loader_;
if (wa_) {
wa_->closeAll();
delete wa_;
@ -267,6 +269,9 @@ public:
/// our Text that should be wrapped in an InsetText
InsetText * inset;
///
PreviewLoader * preview_loader_;
/// This is here to force the test to be done whenever parent_buffer
/// is accessed.
Buffer const * parent() const {
@ -331,10 +336,11 @@ Buffer::Impl::Impl(Buffer * owner, FileName const & file, bool readonly_,
Buffer const * cloned_buffer)
: owner_(owner), lyx_clean(true), bak_clean(true), unnamed(false),
read_only(readonly_), filename(file), file_fully_loaded(false),
toc_backend(owner), macro_lock(false), timestamp_(0),
checksum_(0), wa_(0), gui_(0), undo_(*owner), bibinfo_cache_valid_(false),
bibfile_cache_valid_(false), cite_labels_valid_(false),
cloned_buffer_(cloned_buffer), doing_export(false), parent_buffer(0)
toc_backend(owner), macro_lock(false), timestamp_(0), checksum_(0),
wa_(0), gui_(0), undo_(*owner), preview_loader_(0),
bibinfo_cache_valid_(false), bibfile_cache_valid_(false),
cite_labels_valid_(false), cloned_buffer_(cloned_buffer),
doing_export(false), parent_buffer(0)
{
if (!cloned_buffer_) {
temppath = createBufferTmpDir();
@ -946,16 +952,35 @@ void Buffer::setFullyLoaded(bool value)
}
void Buffer::updatePreviews() const
PreviewLoader * Buffer::loader() const
{
if (graphics::Previews::status() != LyXRC::PREVIEW_OFF)
thePreviews().generateBufferPreviews(*this);
if (lyxrc.preview == LyXRC::PREVIEW_OFF)
return 0;
if (!d->preview_loader_)
d->preview_loader_ = new PreviewLoader(*this);
return d->preview_loader_;
}
void Buffer::removePreviews() const
{
thePreviews().removeLoader(*this);
delete d->preview_loader_;
d->preview_loader_ = 0;
}
void Buffer::updatePreviews() const
{
PreviewLoader * ploader = loader();
if (!ploader)
return;
InsetIterator it = inset_iterator_begin(*d->inset);
InsetIterator const end = inset_iterator_end(*d->inset);
for (; it != end; ++it)
it->addPreview(it, *ploader);
ploader->startLoading();
}

6
src/Buffer.h
View File

@ -72,6 +72,10 @@ class FileName;
class FileNameList;
}
namespace graphics {
class PreviewLoader;
}
class Buffer;
typedef std::list<Buffer *> ListOfBuffers;
@ -511,6 +515,8 @@ public:
/// Set by buffer_funcs' newFile.
void setFullyLoaded(bool);
/// FIXME: Needed by RenderPreview.
graphics::PreviewLoader * Buffer::loader() const;
/// Update the LaTeX preview snippets associated with this buffer
void updatePreviews() const;
/// Remove any previewed LaTeX snippets associated with this buffer

2
src/BufferView.cpp
View File

@ -69,8 +69,6 @@
#include "frontends/Painter.h"
#include "frontends/Selection.h"
#include "graphics/Previews.h"
#include "support/convert.h"
#include "support/debug.h"
#include "support/ExceptionMessage.h"

11
src/LyX.cpp
View File

@ -48,8 +48,6 @@
#include "frontends/alert.h"
#include "frontends/Application.h"
#include "graphics/Previews.h"
#include "support/lassert.h"
#include "support/debug.h"
#include "support/environment.h"
@ -193,8 +191,6 @@ struct LyX::Impl
/// the parsed command line batch command if any
vector<string> batch_commands;
///
graphics::Previews preview_;
///
SpellChecker * spell_checker_;
///
@ -1380,13 +1376,6 @@ Messages const & getGuiMessages()
}
graphics::Previews & thePreviews()
{
LASSERT(singleton_, /**/);
return singleton_->pimpl_->preview_;
}
Session & theSession()
{
LASSERT(singleton_, /**/);

5
src/LyX.h
View File

@ -57,10 +57,6 @@ namespace frontend {
class Application;
}
namespace graphics {
class Previews;
}
/// initial startup
class LyX {
public:
@ -151,7 +147,6 @@ private:
friend void setMover(std::string const & fmt, std::string const & command);
friend Movers & theSystemMovers();
friend frontend::Application * theApp();
friend graphics::Previews & thePreviews();
friend Session & theSession();
friend CmdDef & theTopLevelCmdDef();
friend SpellChecker * theSpellChecker();

4
src/Makefile.am
View File

@ -348,9 +348,7 @@ liblyxgraphics_a_SOURCES = \
graphics/PreviewImage.h \
graphics/PreviewImage.cpp \
graphics/PreviewLoader.h \
graphics/PreviewLoader.cpp \
graphics/Previews.h \
graphics/Previews.cpp
graphics/PreviewLoader.cpp
############################### Mathed ##############################

82
src/graphics/Previews.cpp
View File

@ -1,82 +0,0 @@
/**
* \file Previews.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Angus Leeming
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "Previews.h"
#include "PreviewLoader.h"
#include "Buffer.h"
#include "InsetIterator.h"
#include "LyXRC.h"
#include "insets/Inset.h"
#include "support/shared_ptr.h"
using namespace std;
namespace lyx {
namespace graphics {
LyXRC_PreviewStatus Previews::status()
{
return lyxrc.preview;
}
namespace {
typedef shared_ptr<PreviewLoader> PreviewLoaderPtr;
///
typedef map<Buffer const *, PreviewLoaderPtr> LyxCacheType;
///
static LyxCacheType preview_cache_;
}
PreviewLoader & Previews::loader(Buffer const & buffer) const
{
LyxCacheType::iterator it = preview_cache_.find(&buffer);
if (it == preview_cache_.end()) {
PreviewLoaderPtr ptr(new PreviewLoader(buffer));
preview_cache_[&buffer] = ptr;
return *ptr.get();
}
return *it->second.get();
}
void Previews::removeLoader(Buffer const & buffer) const
{
LyxCacheType::iterator it = preview_cache_.find(&buffer);
if (it != preview_cache_.end())
preview_cache_.erase(it);
}
void Previews::generateBufferPreviews(Buffer const & buffer) const
{
PreviewLoader & ploader = loader(buffer);
Inset & inset = buffer.inset();
InsetIterator it = inset_iterator_begin(inset);
InsetIterator const end = inset_iterator_end(inset);
for (; it != end; ++it)
it->addPreview(it, ploader);
ploader.startLoading();
}
} // namespace graphics
} // namespace lyx

63
src/graphics/Previews.h
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@ -1,63 +0,0 @@
// -*- C++ -*-
/**
* \file Previews.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Angus Leeming
*
* Full author contact details are available in file CREDITS.
*
* graphics::Previews is a singleton class that stores the
* graphics::PreviewLoader for each buffer requiring one.
*/
#ifndef PREVIEWS_H
#define PREVIEWS_H
namespace lyx {
class Buffer;
class LyXRC_PreviewStatus;
namespace graphics {
class PreviewLoader;
class Previews {
public:
/// This should be a singleton class only instanciated in LyX.cpp.
Previews() {}
/// a wrapper for lyxrc.preview
static LyXRC_PreviewStatus status();
/** Returns the PreviewLoader for this buffer.
* Used by individual insets to update their own preview.
*/
PreviewLoader & loader(Buffer const & buffer) const;
/// Called from the Buffer d-tor.
void removeLoader(Buffer const & buffer) const;
/** For a particular buffer, initiate the generation of previews
* for each and every snippet of LaTeX that's of interest with
* a single forked process.
*/
void generateBufferPreviews(Buffer const & buffer) const;
private:
/// noncopyable
Previews(Previews const &);
void operator=(Previews const &);
};
} // namespace graphics
/// This is a singleton class. Get the instance.
/// Implemented in LyX.cpp.
graphics::Previews & thePreviews();
} // namespace lyx
#endif // PREVIEWS_H

34
src/insets/RenderPreview.cpp
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@ -13,6 +13,7 @@
#include "insets/RenderPreview.h"
#include "insets/Inset.h"
#include "Buffer.h"
#include "BufferView.h"
#include "Dimension.h"
#include "LyX.h"
@ -24,7 +25,6 @@
#include "graphics/PreviewImage.h"
#include "graphics/PreviewLoader.h"
#include "graphics/Previews.h"
#include "support/FileName.h"
#include "support/gettext.h"
@ -41,7 +41,7 @@ namespace lyx {
LyXRC_PreviewStatus RenderPreview::status()
{
return graphics::Previews::status();
return lyxrc.preview;
}
@ -74,19 +74,13 @@ RenderBase * RenderPreview::clone(Inset const * inset) const
namespace {
graphics::PreviewLoader & getPreviewLoader(Buffer const & buffer)
{
return thePreviews().loader(buffer);
}
docstring const statusMessage(BufferView const * bv, string const & snippet)
{
LASSERT(bv, /**/);
Buffer const & buffer = bv->buffer();
graphics::PreviewLoader const & loader = getPreviewLoader(buffer);
graphics::PreviewLoader::Status const status = loader.status(snippet);
graphics::PreviewLoader const * loader = buffer.loader();
graphics::PreviewLoader::Status const status = loader->status(snippet);
docstring message;
switch (status) {
@ -111,8 +105,9 @@ docstring const statusMessage(BufferView const * bv, string const & snippet)
graphics::PreviewImage const *
RenderPreview::getPreviewImage(Buffer const & buffer) const
{
graphics::PreviewLoader const & loader = getPreviewLoader(buffer);
return loader.preview(snippet_);
graphics::PreviewLoader const * loader = buffer.loader();
LASSERT(loader, return 0);
return loader->preview(snippet_);
}
@ -180,8 +175,9 @@ void RenderPreview::startLoading(Buffer const & buffer, bool forexport) const
if (!forexport && (status() == LyXRC::PREVIEW_OFF || snippet_.empty()))
return;
graphics::PreviewLoader const & loader = getPreviewLoader(buffer);
loader.startLoading(forexport);
graphics::PreviewLoader * loader = buffer.loader();
LASSERT(loader, return);
loader->startLoading(forexport);
}
@ -192,8 +188,9 @@ void RenderPreview::addPreview(docstring const & latex_snippet,
if (status() == LyXRC::PREVIEW_OFF && !ignore_lyxrc)
return;
graphics::PreviewLoader & loader = getPreviewLoader(buffer);
addPreview(latex_snippet, loader, ignore_lyxrc);
graphics::PreviewLoader * loader = buffer.loader();
LASSERT(loader, return);
addPreview(latex_snippet, *loader, ignore_lyxrc);
}
@ -230,8 +227,9 @@ void RenderPreview::removePreview(Buffer const & buffer)
if (snippet_.empty())
return;
graphics::PreviewLoader & loader = getPreviewLoader(buffer);
loader.remove(snippet_);
graphics::PreviewLoader * loader = buffer.loader();
LASSERT(loader, return);
loader->remove(snippet_);
snippet_.erase();
}

2
src/insets/RenderPreview.h
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@ -44,7 +44,7 @@ class PreviewLoader;
class RenderPreview : public RenderBase, public boost::signals::trackable {
public:
/// a wrapper for Previews::status()
/// a wrapper for lyxrc.preview
static LyXRC_PreviewStatus status();
RenderPreview(Inset const *);