lyx_mirror/src/graphics/PreviewImage.cpp

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/**
* \file PreviewImage.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 "PreviewImage.h"
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#include "Buffer.h"
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#include "Dimension.h"
#include "GraphicsImage.h"
#include "GraphicsLoader.h"
#include "PreviewLoader.h"
Rename files in src/support, step one. src/support/package.h src/support/Package.h Package src/support/package.C.in src/support/Package.C.in Package src/support/path.h src/support/Path.h Path src/support/fs_extras.h src/support/fs_extras.h NOCLASSES src/support/RandomAccessList.h src/support/RandomAccessList.h RandomAccessList src/support/lyxmanip.h src/support/lyxmanip.h NOCLASSES src/support/rename.C src/support/rename.cpp NOCLASSES src/support/abort.C src/support/abort.cpp NOCLASSES src/support/lyxlib.h src/support/lyxlib.h NOCLASSES src/support/ExceptionMessage.h src/support/ExceptionMessage.h ExceptionMessage src/support/copy.C src/support/copy.cpp NOCLASSES src/support/limited_stack.h src/support/limited_stack.h limited_stack src/support/filefilterlist.C src/support/FileFilterList.cpp ['FileFilterList', 'Filter'] src/support/cow_ptr.h src/support/cow_ptr.h cow_ptr src/support/os_unix.C src/support/os_unix.cpp NOCLASSES src/support/socktools.h src/support/socktools.h NOCLASSES src/support/forkedcontr.h src/support/ForkedcallsController.h ForkedcallsController src/support/os.h src/support/os.h NOCLASSES src/support/FileMonitor.h src/support/FileMonitor.h FileMonitor src/support/copied_ptr.h src/support/copied_ptr.h copied_ptr src/support/translator.h src/support/Translator.h Translator src/support/filetools.C src/support/filetools.cpp NOCLASSES src/support/unlink.C src/support/unlink.cpp NOCLASSES src/support/os_win32.C src/support/os_win32.cpp GetFolderPath src/support/lstrings.C src/support/lstrings.cpp NOCLASSES src/support/qstring_helpers.C src/support/qstring_helpers.cpp NOCLASSES src/support/getcwd.C src/support/getcwd.cpp NOCLASSES src/support/systemcall.C src/support/Systemcall.cpp Systemcall src/support/lyxalgo.h src/support/lyxalgo.h NOCLASSES src/support/filefilterlist.h src/support/FileFilterList.h ['FileFilterList', 'Filter'] src/support/unicode.C src/support/unicode.cpp IconvProcessor src/support/userinfo.C src/support/userinfo.cpp NOCLASSES src/support/lyxtime.C src/support/lyxtime.cpp NOCLASSES src/support/kill.C src/support/kill.cpp NOCLASSES src/support/docstring.C src/support/docstring.cpp to_local8bit_failure src/support/os_cygwin.C src/support/os_cygwin.cpp NOCLASSES src/support/lyxsum.C src/support/lyxsum.cpp NOCLASSES src/support/environment.C src/support/environment.cpp NOCLASSES src/support/filetools.h src/support/filetools.h NOCLASSES src/support/textutils.C src/support/textutils.cpp NOCLASSES src/support/mkdir.C src/support/mkdir.cpp NOCLASSES src/support/forkedcall.C src/support/Forkedcall.cpp ['ForkedProcess', 'Forkedcall'] src/support/tempname.C src/support/tempname.cpp NOCLASSES src/support/os_win32.h src/support/os_win32.h GetFolderPath src/support/types.h src/support/types.h NOCLASSES src/support/lstrings.h src/support/lstrings.h NOCLASSES src/support/forkedcallqueue.C src/support/ForkedCallQueue.cpp ForkedCallQueue src/support/qstring_helpers.h src/support/qstring_helpers.h NOCLASSES src/support/convert.C src/support/convert.cpp NOCLASSES src/support/filename.C src/support/FileName.cpp ['FileName', 'DocFileName'] src/support/tests/convert.C src/support/tests/convert.cpp NOCLASSES src/support/tests/filetools.C src/support/tests/filetools.cpp NOCLASSES src/support/tests/lstrings.C src/support/tests/lstrings.cpp NOCLASSES src/support/tests/boost.C src/support/tests/boost.cpp NOCLASSES src/support/docstream.C src/support/docstream.cpp ['iconv_codecvt_facet_exception', 'idocfstream', 'odocfstream'] src/support/std_istream.h src/support/std_istream.h NOCLASSES src/support/systemcall.h src/support/Systemcall.h Systemcall src/support/chdir.C src/support/chdir.cpp NOCLASSES src/support/std_ostream.h src/support/std_ostream.h NOCLASSES src/support/unicode.h src/support/unicode.h IconvProcessor src/support/path.C src/support/Path.cpp Path src/support/fs_extras.C src/support/fs_extras.cpp NOCLASSES src/support/userinfo.h src/support/userinfo.h NOCLASSES src/support/lyxtime.h src/support/lyxtime.h NOCLASSES src/support/docstring.h src/support/docstring.h to_local8bit_failure src/support/debugstream.h src/support/debugstream.h basic_debugstream src/support/environment.h src/support/environment.h NOCLASSES src/support/textutils.h src/support/textutils.h NOCLASSES src/support/forkedcall.h src/support/Forkedcall.h ['ForkedProcess', 'Forkedcall'] src/support/socktools.C src/support/socktools.cpp NOCLASSES src/support/forkedcallqueue.h src/support/ForkedCallQueue.h ForkedCallQueue src/support/forkedcontr.C src/support/ForkedcallsController.cpp ForkedcallsController src/support/os.C src/support/os.cpp NOCLASSES src/support/convert.h src/support/convert.h NOCLASSES src/support/filename.h src/support/FileName.h ['FileName', 'DocFileName'] src/support/docstream.h src/support/docstream.h ['iconv_codecvt_facet_exception', 'idocfstream', 'odocfstream'] src/support/FileMonitor.C src/support/FileMonitor.cpp FileMonitor git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@18024 a592a061-630c-0410-9148-cb99ea01b6c8
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#include "support/FileName.h"
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#include "support/lyxlib.h"
using namespace std;
using namespace lyx::support;
namespace lyx {
namespace graphics {
class PreviewImage::Impl {
public:
///
Impl(PreviewImage & p, PreviewLoader & l,
string const & s, FileName const & f, double af);
///
~Impl();
///
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Image const * image() const;
///
void statusChanged();
///
PreviewImage const & parent_;
///
PreviewLoader & ploader_;
///
Loader iloader_;
///
string const snippet_;
///
double const ascent_frac_;
};
PreviewImage::PreviewImage(PreviewLoader & l,
string const & s,
FileName const & f,
double af)
: pimpl_(new Impl(*this, l, s, f, af))
{}
PreviewImage::~PreviewImage()
{
delete pimpl_;
}
string const & PreviewImage::snippet() const
{
return pimpl_->snippet_;
}
support::FileName const & PreviewImage::filename() const
{
return pimpl_->iloader_.filename();
}
Dimension PreviewImage::dim() const
{
Dimension dim;
Image const * const image = pimpl_->iloader_.image();
if (!image)
return dim;
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dim.asc = support::iround(pimpl_->ascent_frac_ * double(image->height()));
dim.des = image->height() - dim.asc;
dim.wid = image->width();
return dim;
}
Image const * PreviewImage::image() const
{
return pimpl_->image();
}
PreviewLoader & PreviewImage::previewLoader() const
{
return pimpl_->ploader_;
}
PreviewImage::Impl::Impl(PreviewImage & p, PreviewLoader & l, string const & s,
FileName const & bf, double af)
: parent_(p), ploader_(l), iloader_(l.buffer().fileName(), bf),
snippet_(s), ascent_frac_(af)
{
iloader_.setDisplayPixelRatio(l.displayPixelRatio());
// This connection is destroyed at the same time as this.
iloader_.connect([this](){ statusChanged(); });
}
PreviewImage::Impl::~Impl()
{
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// If these images are generated for a clone, then that may be
// because we are previewing. We therefore do not want to delete
// them when this Buffer is destroyed.
if (!ploader_.buffer().isClone())
iloader_.filename().removeFile();
}
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Image const * PreviewImage::Impl::image() const
{
if (iloader_.status() == WaitingToLoad)
iloader_.startLoading();
return iloader_.image();
}
void PreviewImage::Impl::statusChanged()
{
switch (iloader_.status()) {
case WaitingToLoad:
case Loading:
case Converting:
case Loaded:
case ScalingEtc:
break;
case ErrorNoFile:
case ErrorConverting:
case ErrorLoading:
case ErrorGeneratingPixmap:
case ErrorUnknown:
//iloader_.filename().removeFile();
ploader_.remove(snippet_);
// FIXME: We need to return here, because PreviewLoader::remove
// removes the preview image from the cache, which deletes this
// object, so we should not try to do anything here.
return;
case Ready:
iloader_.filename().removeFile();
break;
}
ploader_.emitSignal(parent_);
}
} // namespace graphics
} // namespace lyx