X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Finsets%2FInsetPreview.cpp;h=1a70b1e17a2b1ece64adf280bcf5fbc451c5d034;hb=2d48072e664099385b2442f7166b3c57129799bb;hp=8b44b98aa802aafd72ce1cd1059153566044f22b;hpb=bb69584112dd31dacb39b387781a9d00af9c7a57;p=lyx.git

diff --git a/src/insets/InsetPreview.cpp b/src/insets/InsetPreview.cpp
index 8b44b98aa8..1a70b1e17a 100644
--- a/src/insets/InsetPreview.cpp
+++ b/src/insets/InsetPreview.cpp
@@ -1,164 +1,194 @@
-/**
- * \file InsetPreview.cpp
- * This file is part of LyX, the document processor.
- * Licence details can be found in the file COPYING.
- *
- * \author Vincent van Ravesteijn
- *
- * Full author contact details are available in file CREDITS.
- */
-#include "config.h"
-
-#include "InsetPreview.h"
-
-#include "Buffer.h"
-#include "BufferParams.h"
-#include "BufferView.h"
-#include "Cursor.h"
-#include "Lexer.h"
-#include "LyXRC.h"
-#include "MetricsInfo.h"
-#include "OutputParams.h"
-
-#include "frontends/Painter.h"
-
-#include "graphics/PreviewImage.h"
-
-#include <sstream>
-
-using namespace std;
-
-namespace lyx {
-
-
-InsetPreview::InsetPreview(Buffer * buf) 
-	: InsetText(buf),
-	  preview_(new RenderPreview(this)), use_preview_(true)
-{
-	setAutoBreakRows(true);
-	setDrawFrame(true);
-	setFrameColor(Color_previewframe);
-}
-
-
-InsetPreview::~InsetPreview() 
-{}
-
-
-InsetPreview::InsetPreview(InsetPreview const & other)
-	: InsetText(other)
-{
-	preview_.reset(new RenderPreview(*other.preview_, this));
-}
-
-
-void InsetPreview::write(ostream & os) const
-{
-	os << "Preview" << "\n";
-	text().write(os);
-}
-
-
-void InsetPreview::addPreview(DocIterator const & inset_pos,
-	graphics::PreviewLoader & ploader) const
-{
-	preparePreview(inset_pos);
-}
-
-
-void InsetPreview::preparePreview(DocIterator const & pos) const  
-{
-	odocstringstream str;  
-	OutputParams runparams(&pos.buffer()->params().encoding());
-	latex(str, runparams);
-	docstring const snippet = str.str();
-	preview_->addPreview(snippet, *pos.buffer());  
-}
-
-
-bool InsetPreview::previewState(BufferView * bv) const
-{
-	if (!editing(bv) && RenderPreview::status() == LyXRC::PREVIEW_ON) {
-		graphics::PreviewImage const * pimage =
-			preview_->getPreviewImage(bv->buffer());
-		return pimage && pimage->image();
-	}
-	return false;
-}
-
-
-void InsetPreview::reloadPreview(DocIterator const & pos) const
-{
-	preparePreview(pos);
-	preview_->startLoading(*pos.buffer());
-}
-
-
-void InsetPreview::draw(PainterInfo & pi, int x, int y) const
-{
-	use_preview_ = previewState(pi.base.bv);
-
-	if (use_preview_) {
-		// one pixel gap in front
-		preview_->draw(pi, x + 1 + TEXT_TO_INSET_OFFSET, y);
-		setPosCache(pi, x, y);
-		return;
-	}
-	InsetText::draw(pi, x, y);
-}
-
-
-void InsetPreview::edit(Cursor & cur, bool front, EntryDirection entry_from)
-{
-	cur.push(*this);
-	InsetText::edit(cur, front, entry_from);
-}
-
-
-Inset * InsetPreview::editXY(Cursor & cur, int x, int y)
-{
-	if (use_preview_) {
-		edit(cur, true, ENTRY_DIRECTION_IGNORE);
-		return this;
-	}
-	cur.push(*this);
-	return InsetText::editXY(cur, x, y);
-}
-
-
-void InsetPreview::metrics(MetricsInfo & mi, Dimension & dim) const
-{
-	if (previewState(mi.base.bv)) {
-		preview_->metrics(mi, dim);
-		mi.base.textwidth += 2 * TEXT_TO_INSET_OFFSET;
-		
-		dim.wid = max(dim.wid, 4);
-		dim.asc = max(dim.asc, 4);
-		
-		dim.asc += TEXT_TO_INSET_OFFSET;
-		dim.des += TEXT_TO_INSET_OFFSET;
-		dim.wid += TEXT_TO_INSET_OFFSET;
-		dim_ = dim;
-		dim.wid += TEXT_TO_INSET_OFFSET;
-		// insert a one pixel gap
-		dim.wid += 1;
-		// Cache the inset dimension.
-		setDimCache(mi, dim);
-		Dimension dim_dummy;
-		MetricsInfo mi_dummy = mi;
-		InsetText::metrics(mi_dummy, dim_dummy);
-		return;
-	}
-	InsetText::metrics(mi, dim);
-}
-
-
-bool InsetPreview::notifyCursorLeaves(Cursor const & old, Cursor & cur)
-{
-	reloadPreview(old);
-	cur.updateFlags(Update::Force);
-	return InsetText::notifyCursorLeaves(old, cur);
-}
-
-
-} // namespace lyx
+/**
+ * \file InsetPreview.cpp
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author Vincent van Ravesteijn
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+#include "config.h"
+
+#include "InsetPreview.h"
+
+#include "Buffer.h"
+#include "BufferParams.h"
+#include "BufferView.h"
+#include "Cursor.h"
+#include "Lexer.h"
+#include "MetricsInfo.h"
+#include "OutputParams.h"
+#include "RenderPreview.h"
+#include "texstream.h"
+
+#include "frontends/Painter.h"
+
+#include "graphics/PreviewImage.h"
+
+#include "mathed/InsetMathHull.h"
+#include "mathed/MacroTable.h"
+
+#include <sstream>
+
+using namespace std;
+
+namespace lyx {
+
+
+InsetPreview::InsetPreview(Buffer * buf)
+	: InsetText(buf), preview_(new RenderPreview(this))
+{
+	setDrawFrame(true);
+	setFrameColor(Color_previewframe);
+}
+
+
+InsetPreview::~InsetPreview()
+{}
+
+
+InsetPreview::InsetPreview(InsetPreview const & other)
+	: InsetText(other)
+{
+	preview_.reset(new RenderPreview(*other.preview_, this));
+}
+
+
+InsetPreview & InsetPreview::operator=(InsetPreview const & other)
+{
+	if (&other == this)
+		return *this;
+
+	InsetText::operator=(other);
+	preview_.reset(new RenderPreview(*other.preview_, this));
+
+	return *this;
+}
+
+
+void InsetPreview::write(ostream & os) const
+{
+	os << "Preview" << "\n";
+	text().write(os);
+}
+
+
+void InsetPreview::addPreview(DocIterator const & inset_pos,
+	graphics::PreviewLoader &) const
+{
+	preparePreview(inset_pos);
+}
+
+
+void InsetPreview::preparePreview(DocIterator const & pos) const
+{
+	odocstringstream str;
+	otexstream os(str);
+	OutputParams runparams(&pos.buffer()->params().encoding());
+	latex(os, runparams);
+
+	// collect macros at this position
+	MacroNameSet macros;
+	pos.buffer()->listMacroNames(macros);
+
+	// look for math insets and collect definitions for the used macros
+	MacroNameSet defs;
+	DocIterator dit = doc_iterator_begin(pos.buffer(), this);
+	DocIterator const dend = doc_iterator_end(pos.buffer(), this);
+	if (!dit.nextInset())
+		dit.forwardInset();
+	for (; dit != dend; dit.forwardInset()) {
+		InsetMath * im = dit.nextInset()->asInsetMath();
+		InsetMathHull * hull = im ? im->asHullInset() : nullptr;
+		if (!hull)
+			continue;
+		for (idx_type idx = 0; idx < hull->nargs(); ++idx)
+			hull->usedMacros(hull->cell(idx), pos, macros, defs);
+	}
+	MacroNameSet::iterator it = defs.begin();
+	MacroNameSet::iterator end = defs.end();
+	docstring macro_preamble;
+	for (; it != end; ++it)
+		macro_preamble.append(*it);
+
+	docstring const snippet = macro_preamble + str.str();
+	preview_->addPreview(snippet, *pos.buffer());
+}
+
+
+bool InsetPreview::previewState(BufferView * bv) const
+{
+	if (!editing(bv) && RenderPreview::previewText()) {
+		graphics::PreviewImage const * pimage =
+			preview_->getPreviewImage(bv->buffer());
+		return pimage && pimage->image();
+	}
+	return false;
+}
+
+
+void InsetPreview::reloadPreview(DocIterator const & pos) const
+{
+	preparePreview(pos);
+	preview_->startLoading(*pos.buffer());
+}
+
+
+void InsetPreview::draw(PainterInfo & pi, int x, int y) const
+{
+	if (previewState(pi.base.bv)) {
+		// one pixel gap in front
+		preview_->draw(pi, x + 1, y);
+	} else
+		InsetText::draw(pi, x, y);
+}
+
+
+void InsetPreview::edit(Cursor & cur, bool front, EntryDirection entry_from)
+{
+	cur.push(*this);
+	InsetText::edit(cur, front, entry_from);
+}
+
+
+Inset * InsetPreview::editXY(Cursor & cur, int x, int y)
+{
+	if (previewState(&cur.bv())) {
+		edit(cur, true, ENTRY_DIRECTION_IGNORE);
+		return this;
+	}
+	cur.push(*this);
+	return InsetText::editXY(cur, x, y);
+}
+
+
+void InsetPreview::metrics(MetricsInfo & mi, Dimension & dim) const
+{
+	if (previewState(mi.base.bv)) {
+		preview_->metrics(mi, dim);
+
+		dim.wid = max(dim.wid, 4);
+		dim.asc = max(dim.asc, 4);
+
+		dim.asc += topOffset(mi.base.bv);
+		dim.des += bottomOffset(mi.base.bv);
+		// insert a one pixel gap
+		dim.wid += 1;
+		Dimension dim_dummy;
+		MetricsInfo mi_dummy = mi;
+		InsetText::metrics(mi_dummy, dim_dummy);
+		return;
+	}
+	InsetText::metrics(mi, dim);
+}
+
+
+bool InsetPreview::notifyCursorLeaves(Cursor const & old, Cursor & cur)
+{
+	reloadPreview(old);
+	cur.screenUpdateFlags(Update::Force);
+	return InsetText::notifyCursorLeaves(old, cur);
+}
+
+
+} // namespace lyx