2 * \file InsetPreview.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Vincent van Ravesteijn
8 * Full author contact details are available in file CREDITS.
12 #include "InsetPreview.h"
15 #include "BufferParams.h"
16 #include "BufferView.h"
19 #include "MetricsInfo.h"
20 #include "OutputParams.h"
21 #include "RenderPreview.h"
23 #include "frontends/Painter.h"
25 #include "graphics/PreviewImage.h"
34 InsetPreview::InsetPreview(Buffer * buf)
36 preview_(new RenderPreview(this)), use_preview_(true)
39 setFrameColor(Color_previewframe);
43 InsetPreview::~InsetPreview()
47 InsetPreview::InsetPreview(InsetPreview const & other)
50 preview_.reset(new RenderPreview(*other.preview_, this));
54 void InsetPreview::write(ostream & os) const
56 os << "Preview" << "\n";
61 void InsetPreview::addPreview(DocIterator const & inset_pos,
62 graphics::PreviewLoader &) const
64 preparePreview(inset_pos);
68 void InsetPreview::preparePreview(DocIterator const & pos) const
72 otexstream os(str, texrow);
73 OutputParams runparams(&pos.buffer()->params().encoding());
75 docstring const snippet = str.str();
76 preview_->addPreview(snippet, *pos.buffer());
80 bool InsetPreview::previewState(BufferView * bv) const
82 if (!editing(bv) && RenderPreview::previewText()) {
83 graphics::PreviewImage const * pimage =
84 preview_->getPreviewImage(bv->buffer());
85 return pimage && pimage->image();
91 void InsetPreview::reloadPreview(DocIterator const & pos) const
94 preview_->startLoading(*pos.buffer());
98 void InsetPreview::draw(PainterInfo & pi, int x, int y) const
100 use_preview_ = previewState(pi.base.bv);
103 // one pixel gap in front
104 preview_->draw(pi, x + 1 + TEXT_TO_INSET_OFFSET, y);
105 setPosCache(pi, x, y);
108 InsetText::draw(pi, x, y);
112 void InsetPreview::edit(Cursor & cur, bool front, EntryDirection entry_from)
115 InsetText::edit(cur, front, entry_from);
119 Inset * InsetPreview::editXY(Cursor & cur, int x, int y)
122 edit(cur, true, ENTRY_DIRECTION_IGNORE);
126 return InsetText::editXY(cur, x, y);
130 void InsetPreview::metrics(MetricsInfo & mi, Dimension & dim) const
132 if (previewState(mi.base.bv)) {
133 preview_->metrics(mi, dim);
134 mi.base.textwidth += 2 * TEXT_TO_INSET_OFFSET;
136 dim.wid = max(dim.wid, 4);
137 dim.asc = max(dim.asc, 4);
139 dim.asc += TEXT_TO_INSET_OFFSET;
140 dim.des += TEXT_TO_INSET_OFFSET;
141 dim.wid += TEXT_TO_INSET_OFFSET;
143 dim.wid += TEXT_TO_INSET_OFFSET;
144 // insert a one pixel gap
146 // Cache the inset dimension.
147 setDimCache(mi, dim);
149 MetricsInfo mi_dummy = mi;
150 InsetText::metrics(mi_dummy, dim_dummy);
153 InsetText::metrics(mi, dim);
157 bool InsetPreview::notifyCursorLeaves(Cursor const & old, Cursor & cur)
160 cur.screenUpdateFlags(Update::Force);
161 return InsetText::notifyCursorLeaves(old, cur);