X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Finsets%2FInsetPreview.cpp;h=c306ae91d21ea3678bf31f7ec935e96073f74a5d;hb=e8c932ff842ced0b26c205ed6983102b6e7e50c2;hp=1b3456eac947f3e3d415e52a4afdb28fdefd023b;hpb=72838f24b9fc9e2dd4b73cabc4225180c8973b42;p=lyx.git

diff --git a/src/insets/InsetPreview.cpp b/src/insets/InsetPreview.cpp
index 1b3456eac9..c306ae91d2 100644
--- a/src/insets/InsetPreview.cpp
+++ b/src/insets/InsetPreview.cpp
@@ -19,11 +19,15 @@
 #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;
@@ -31,16 +35,15 @@ using namespace std;
 namespace lyx {
 
 
-InsetPreview::InsetPreview(Buffer * buf) 
-	: InsetText(buf),
-	  preview_(new RenderPreview(this)), use_preview_(true)
+InsetPreview::InsetPreview(Buffer * buf)
+	: InsetText(buf), preview_(new RenderPreview(this))
 {
 	setDrawFrame(true);
 	setFrameColor(Color_previewframe);
 }
 
 
-InsetPreview::~InsetPreview() 
+InsetPreview::~InsetPreview()
 {}
 
 
@@ -51,6 +54,18 @@ InsetPreview::InsetPreview(InsetPreview const & other)
 }
 
 
+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";
@@ -65,14 +80,38 @@ void InsetPreview::addPreview(DocIterator const & inset_pos,
 }
 
 
-void InsetPreview::preparePreview(DocIterator const & pos) const  
+void InsetPreview::preparePreview(DocIterator const & pos) const
 {
-	TexRow texrow;
 	odocstringstream str;
-	otexstream os(str, texrow);
+	otexstream os(str);
 	OutputParams runparams(&pos.buffer()->params().encoding());
 	latex(os, runparams);
-	docstring const snippet = str.str();
+
+	// 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() : 0;
+		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());
 }
 
@@ -97,15 +136,11 @@ void InsetPreview::reloadPreview(DocIterator const & pos) const
 
 void InsetPreview::draw(PainterInfo & pi, int x, int y) const
 {
-	use_preview_ = previewState(pi.base.bv);
-
-	if (use_preview_) {
+	if (previewState(pi.base.bv)) {
 		// 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);
+		preview_->draw(pi, x + 1, y);
+	} else
+		InsetText::draw(pi, x, y);
 }
 
 
@@ -118,7 +153,7 @@ void InsetPreview::edit(Cursor & cur, bool front, EntryDirection entry_from)
 
 Inset * InsetPreview::editXY(Cursor & cur, int x, int y)
 {
-	if (use_preview_) {
+	if (previewState(&cur.bv())) {
 		edit(cur, true, ENTRY_DIRECTION_IGNORE);
 		return this;
 	}
@@ -131,20 +166,14 @@ 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);