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Move some horizontal scrolling code from TextMetrics to BufferView

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It is better to have all the code in the same place, and it will avoid code duplication later.
This commit is contained in:
Jean-Marc Lasgouttes 2016-02-29 16:05:06 +01:00
parent 77ef48d093
commit 96fee0ed7a
3 changed files with 28 additions and 28 deletions
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19
src/BufferView.cpp
View File

@ -2914,15 +2914,26 @@ int BufferView::horizScrollOffset() const
}
CursorSlice const & BufferView::currentRowSlice() const
int BufferView::horizScrollOffset(Text const * text,
pit_type pit, pos_type pos) const
{
return d->current_row_slice_;
// Is this a row that is currently scrolled?
if (!d->current_row_slice_.empty()
&& &text->inset() == d->current_row_slice_.inset().asInsetText()
&& pit == d->current_row_slice_.pit()
&& pos == d->current_row_slice_.pos())
return d->horiz_scroll_offset_;
return 0;
}
CursorSlice const & BufferView::lastRowSlice() const
bool BufferView::hadHorizScrollOffset(Text const * text,
pit_type pit, pos_type pos) const
{
return d->last_row_slice_;
return !d->last_row_slice_.empty()
&& &text->inset() == d->last_row_slice_.inset().asInsetText()
&& pit == d->last_row_slice_.pit()
&& pos == d->last_row_slice_.pos();
}

13
src/BufferView.h
View File

@ -125,12 +125,15 @@ public:
// Returns the amount of horizontal scrolling applied to the
// top-level row where the cursor lies
int horizScrollOffset() const;
// Returns the amount of horizontal scrolling applied to the
// row of text starting at (pit, pos)
int horizScrollOffset(Text const * text,
pit_type pit, pos_type pos) const;
// Points to the top-level row where the cursor lies (during draw).
CursorSlice const & currentRowSlice() const;
// Points to the top-level row where the cursor lied at last draw event.
CursorSlice const & lastRowSlice() const;
// Returns true if the row of text starting at (pit, pos) was scrolled
// at the last draw event.
bool hadHorizScrollOffset(Text const * text,
pit_type pit, pos_type pos) const;
/// reset the scrollbar to reflect current view position.
void updateScrollbar();

24
src/TextMetrics.cpp
View File

@ -1113,14 +1113,8 @@ pos_type TextMetrics::getPosNearX(Row const & row, int & x,
int const xo = origin_.x_;
x -= xo;
int offset = 0;
CursorSlice rowSlice(const_cast<InsetText &>(text_->inset()));
rowSlice.pit() = row.pit();
rowSlice.pos() = row.pos();
// Adapt to cursor row scroll offset if applicable.
if (bv_->currentRowSlice() == rowSlice)
offset = bv_->horizScrollOffset();
int const offset = bv_->horizScrollOffset(text_, row.pit(), row.pos());
x += offset;
pos_type pos = row.pos();
@ -1908,26 +1902,18 @@ void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const
for (size_t i = 0; i != nrows; ++i) {
Row const & row = pm.rows()[i];
int row_x = x;
// Adapt to cursor row scroll offset if applicable.
int row_x = x - bv_->horizScrollOffset(text_, pit, row.pos());
if (i)
y += row.ascent();
CursorSlice rowSlice(const_cast<InsetText &>(text_->inset()));
rowSlice.pit() = pit;
rowSlice.pos() = row.pos();
RowPainter rp(pi, *text_, pit, row, row_x, y);
bool const inside = (y + row.descent() >= 0
&& y - row.ascent() < ww);
// Adapt to cursor row scroll offset if applicable.
if (bv_->currentRowSlice() == rowSlice)
row_x -= bv_->horizScrollOffset();
// It is not needed to draw on screen if we are not inside.
pi.pain.setDrawingEnabled(inside && original_drawing_state);
RowPainter rp(pi, *text_, pit, row, row_x, y);
if (selection)
row.setSelectionAndMargins(sel_beg_par, sel_end_par);
else
@ -1946,7 +1932,7 @@ void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const
if (pi.pain.isDrawingEnabled())
row.setCrc(pm.computeRowSignature(row, bparams));
bool row_has_changed = row.changed()
|| rowSlice == bv_->lastRowSlice();
|| bv_->hadHorizScrollOffset(text_, pit, row.pos());
// Take this opportunity to spellcheck the row contents.
if (row_has_changed && pi.do_spellcheck && lyxrc.spellcheck_continuously) {