#include <config.h>
-#include "render_preview.h"
+#include "insets/render_preview.h"
+#include "insets/inset.h"
+#include "BufferView.h"
#include "dimension.h"
+#include "gettext.h"
#include "LColor.h"
+#include "lyx_main.h"
+#include "lyxrc.h"
#include "metricsinfo.h"
+#include "frontends/FontMetrics.h"
#include "frontends/Painter.h"
#include "graphics/PreviewImage.h"
#include "graphics/PreviewLoader.h"
#include "graphics/Previews.h"
+#include "support/filename.h"
#include "support/lstrings.h"
#include <boost/bind.hpp>
-using std::string;
-namespace graphics = lyx::graphics;
-namespace support = lyx::support;
+namespace lyx {
+
+using support::FileName;
+
+using std::string;
+using std::auto_ptr;
-bool RenderPreview::activated()
+LyXRC_PreviewStatus RenderPreview::status()
{
- return graphics::Previews::activated();
+ return graphics::Previews::status();
}
-RenderPreview::RenderPreview()
- : pimage_(0)
+RenderPreview::RenderPreview(InsetBase const * inset)
+ : parent_(inset)
{}
-RenderPreview::RenderPreview(RenderPreview const & other)
+RenderPreview::RenderPreview(RenderPreview const & other,
+ InsetBase const * inset)
: RenderBase(other),
boost::signals::trackable(),
snippet_(other.snippet_),
- pimage_(0)
+ parent_(inset)
{}
-RenderBase * RenderPreview::clone() const
+auto_ptr<RenderBase> RenderPreview::clone(InsetBase const * inset) const
+{
+ return auto_ptr<RenderBase>(new RenderPreview(*this, inset));
+}
+
+
+namespace {
+
+graphics::PreviewLoader & getPreviewLoader(Buffer const & buffer)
{
- return new RenderPreview(*this);
+ graphics::Previews const & previews = graphics::Previews::get();
+ return previews.loader(buffer);
}
-void RenderPreview::metrics(MetricsInfo &, Dimension & dim) const
+docstring const statusMessage(BufferView const * bv, string const & snippet)
{
- if (previewReady()) {
- dim.asc = pimage()->ascent();
- dim.des = pimage()->descent();
- dim.wid = pimage()->width();
+ BOOST_ASSERT(bv && bv->buffer());
+
+ Buffer const & buffer = *bv->buffer();
+ graphics::PreviewLoader const & loader = getPreviewLoader(buffer);
+ graphics::PreviewLoader::Status const status = loader.status(snippet);
+
+ docstring message;
+ switch (status) {
+ case graphics::PreviewLoader::InQueue:
+ case graphics::PreviewLoader::Processing:
+ message = _("Preview loading");
+ break;
+ case graphics::PreviewLoader::Ready:
+ message = _("Preview ready");
+ break;
+ case graphics::PreviewLoader::NotFound:
+ message = _("Preview failed");
+ break;
+ }
+
+ return message;
+}
+
+} // namespace anon
+
+
+graphics::PreviewImage const *
+RenderPreview::getPreviewImage(Buffer const & buffer) const
+{
+ graphics::PreviewLoader const & loader = getPreviewLoader(buffer);
+ return loader.preview(snippet_);
+}
+
+
+bool RenderPreview::metrics(MetricsInfo & mi, Dimension & dim) const
+{
+ BOOST_ASSERT(mi.base.bv && mi.base.bv->buffer());
+
+ graphics::PreviewImage const * const pimage =
+ getPreviewImage(*mi.base.bv->buffer());
+
+ if (pimage) {
+ dim.asc = pimage->ascent();
+ dim.des = pimage->descent();
+ dim.wid = pimage->width();
} else {
- dim.asc = 20;
- dim.des = 20;
- dim.wid = 20;
+ dim.asc = 50;
+ dim.des = 0;
+
+ LyXFont font(mi.base.font);
+ font.setFamily(LyXFont::SANS_FAMILY);
+ font.setSize(LyXFont::SIZE_FOOTNOTE);
+ docstring const stat = statusMessage(mi.base.bv, snippet_);
+ dim.wid = 15 + theFontMetrics(font).width(stat);
}
+ bool const changed = dim_ != dim;
dim_ = dim;
+ return changed;
}
void RenderPreview::draw(PainterInfo & pi, int x, int y) const
{
- BOOST_ASSERT(pi.base.bv);
- view_ = pi.base.bv->owner()->view();
+ BOOST_ASSERT(pi.base.bv && pi.base.bv->buffer());
- if (!previewReady())
- pi.pain.rectangle(x, y - dim_.asc, dim_.wid, dim_.height(),
- LColor::foreground);
- else
+ graphics::PreviewImage const * const pimage =
+ getPreviewImage(*pi.base.bv->buffer());
+ graphics::Image const * const image = pimage ? pimage->image() : 0;
+
+ if (image) {
pi.pain.image(x, y - dim_.asc, dim_.wid, dim_.height(),
- *(pimage()->image()));
+ *image);
+
+ } else {
+ int const offset = InsetOld::TEXT_TO_INSET_OFFSET;
+
+ pi.pain.rectangle(x + offset,
+ y - dim_.asc,
+ dim_.wid - 2 * offset,
+ dim_.asc + dim_.des,
+ LColor::foreground);
+
+ LyXFont font(pi.base.font);
+ font.setFamily(LyXFont::SANS_FAMILY);
+ font.setSize(LyXFont::SIZE_FOOTNOTE);
+
+ docstring const stat = statusMessage(pi.base.bv, snippet_);
+ pi.pain.text(x + offset + 6,
+ y - theFontMetrics(font).maxAscent() - 4,
+ stat, font);
+ }
}
-boost::signals::connection RenderPreview::connect(slot_type const & slot)
+void RenderPreview::startLoading(Buffer const & buffer) const
{
- return preview_ready_signal_.connect(slot);
+ if (status() == LyXRC::PREVIEW_OFF || snippet_.empty())
+ return;
+
+ graphics::PreviewLoader const & loader = getPreviewLoader(buffer);
+ loader.startLoading();
}
-void RenderPreview::generatePreview(string const & latex_snippet,
- Buffer const & buffer)
+void RenderPreview::addPreview(docstring const & latex_snippet,
+ Buffer const & buffer)
{
- if (!activated())
+ if (status() == LyXRC::PREVIEW_OFF)
return;
- graphics::Previews & previews = graphics::Previews::get();
- graphics::PreviewLoader & loader = previews.loader(buffer);
+ graphics::PreviewLoader & loader = getPreviewLoader(buffer);
addPreview(latex_snippet, loader);
- if (!snippet_.empty())
- loader.startLoading();
}
-void RenderPreview::addPreview(string const & latex_snippet,
- graphics::PreviewLoader & ploader)
+void RenderPreview::addPreview(docstring const & latex_snippet,
+ graphics::PreviewLoader & ploader)
{
- if (!activated())
+ if (status() == LyXRC::PREVIEW_OFF)
return;
- snippet_ = support::trim(latex_snippet);
- pimage_ = 0;
+ // FIXME UNICODE
+ // We have to make sure that we call latex with the right encoding
+ snippet_ = support::trim(to_utf8(latex_snippet));
if (snippet_.empty())
return;
- pimage_ = ploader.preview(snippet_);
- if (pimage_)
+ if (ploader.preview(snippet_))
return;
// If this is the first time of calling, connect to the
if (snippet_.empty())
return;
- graphics::Previews & previews = graphics::Previews::get();
- graphics::PreviewLoader & loader = previews.loader(buffer);
+ graphics::PreviewLoader & loader = getPreviewLoader(buffer);
loader.remove(snippet_);
snippet_.erase();
- pimage_ = 0;
}
-bool RenderPreview::previewReady() const
+void RenderPreview::imageReady(graphics::PreviewImage const & pimage)
{
- return pimage_ ? pimage_->image() : false;
+ // Check the current snippet is the same as that previewed.
+ if (snippet_ == pimage.snippet())
+ LyX::cref().updateInset(parent_);
}
-void RenderPreview::imageReady(graphics::PreviewImage const & pimage)
-{
- // Check the current snippet is the same as that previewed.
- if (snippet_ != pimage.snippet())
- return;
+RenderMonitoredPreview::RenderMonitoredPreview(InsetBase const * inset)
+ : RenderPreview(inset),
+ monitor_(FileName(), 2000)
+{}
- pimage_ = &pimage;
- preview_ready_signal_();
+
+void RenderMonitoredPreview::setAbsFile(FileName const & file)
+{
+ monitor_.reset(file);
}
-void RenderMonitoredPreview::startMonitoring(string const & file)
+void RenderMonitoredPreview::draw(PainterInfo & pi, int x, int y) const
{
- monitor_.reset(file);
- monitor_.start();
+ RenderPreview::draw(pi, x, y);
+ if (!monitoring())
+ startMonitoring();
}
{
return monitor_.connect(slot);
}
+
+} // namespace lyx
projects / lyx.git / blobdiff