Center longtable explicitly (#10690)

[lyx.git] / src / insets / InsetPreview.cpp

diff --git a/src/insets/InsetPreview.cpp b/src/insets/InsetPreview.cpp
index c1b8e3fa5e56e9629d7838106472d51d3d087290..c306ae91d21ea3678bf31f7ec935e96073f74a5d 100644 (file)
--- a/src/insets/InsetPreview.cpp
+++ b/src/insets/InsetPreview.cpp
@@ -16,15 +16,18 @@
 #include "BufferView.h"
 #include "Cursor.h"
 #include "Lexer.h"
-#include "LyXRC.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;
@@ -32,17 +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))
 {
-       setAutoBreakRows(true);
        setDrawFrame(true);
        setFrameColor(Color_previewframe);
 }
 
 
-InsetPreview::~InsetPreview() 
+InsetPreview::~InsetPreview()
 {}
 
 
@@ -53,6 +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";
@@ -67,21 +80,45 @@ void InsetPreview::addPreview(DocIterator const & inset_pos,
 }
 
 
-void InsetPreview::preparePreview(DocIterator const & pos) const  
+void InsetPreview::preparePreview(DocIterator const & pos) const
 {
-       odocstringstream str;  
+       odocstringstream str;
        otexstream os(str);
        OutputParams runparams(&pos.buffer()->params().encoding());
        latex(os, runparams);
-       docstring const snippet = str.str();
-       preview_->addPreview(snippet, *pos.buffer());  
+
+       // 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());
 }
 
 
 bool InsetPreview::previewState(BufferView * bv) const
 {
-       if (!editing(bv) && (RenderPreview::status() == LyXRC::PREVIEW_ON ||
-                            RenderPreview::status() == LyXRC::PREVIEW_NO_MATH)) {
+       if (!editing(bv) && RenderPreview::previewText()) {
                graphics::PreviewImage const * pimage =
                        preview_->getPreviewImage(bv->buffer());
                return pimage && pimage->image();
@@ -99,15 +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);
 }
 
 
@@ -120,7 +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;
        }
@@ -133,20 +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);