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Erase correctly math multi-cell selection

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What a selection spans several cells in mathed, and a deletion occurs though LFUN_CHAR_DELETE_FORWARD for example, only the case of a proper grid was handled. When no such grid exists, all cells between the first and the last index are cleared now.
This commit is contained in:
Jean-Marc Lasgouttes 2014-10-16 16:16:15 +02:00
parent ac018bd8db
commit f58d9f27a2
1 changed files with 36 additions and 24 deletions
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60
src/CutAndPaste.cpp
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@ -1254,31 +1254,43 @@ void eraseSelection(Cursor & cur)
//lyxerr << "cap::eraseSelection begin: " << cur << endl;
CursorSlice const & i1 = cur.selBegin();
CursorSlice const & i2 = cur.selEnd();
if (i1.inset().asInsetMath()) {
saveSelection(cur);
cur.top() = i1;
if (i1.idx() == i2.idx()) {
i1.cell().erase(i1.pos(), i2.pos());
// We may have deleted i1.cell(cur.pos()).
// Make sure that pos is valid.
if (cur.pos() > cur.lastpos())
cur.pos() = cur.lastpos();
} else {
InsetMath * p = i1.asInsetMath();
Inset::row_type r1, r2;
Inset::col_type c1, c2;
region(i1, i2, r1, r2, c1, c2);
for (Inset::row_type row = r1; row <= r2; ++row)
for (Inset::col_type col = c1; col <= c2; ++col)
p->cell(p->index(row, col)).clear();
// We've deleted the whole cell. Only pos 0 is valid.
cur.pos() = 0;
}
// need a valid cursor. (Lgb)
cur.clearSelection();
} else {
lyxerr << "can't erase this selection 1" << endl;
if (!i1.asInsetMath()) {
LYXERR0("Can't erase this selection");
return;
}
saveSelection(cur);
cur.top() = i1;
InsetMath * p = i1.asInsetMath();
if (i1.idx() == i2.idx()) {
i1.cell().erase(i1.pos(), i2.pos());
// We may have deleted i1.cell(cur.pos()).
// Make sure that pos is valid.
if (cur.pos() > cur.lastpos())
cur.pos() = cur.lastpos();
} else if (p->nrows() > 0 && p->ncols() > 0) {
// This is a grid, delete a nice square region
Inset::row_type r1, r2;
Inset::col_type c1, c2;
region(i1, i2, r1, r2, c1, c2);
for (Inset::row_type row = r1; row <= r2; ++row)
for (Inset::col_type col = c1; col <= c2; ++col)
p->cell(p->index(row, col)).clear();
// We've deleted the whole cell. Only pos 0 is valid.
cur.pos() = 0;
} else {
Inset::idx_type idx1 = i1.idx();
Inset::idx_type idx2 = i2.idx();
if (idx1 > idx2)
swap(idx1, idx2);
for (Inset::idx_type idx = idx1 ; idx <= idx2; ++idx)
p->cell(idx).clear();
// We've deleted the whole cell. Only pos 0 is valid.
cur.pos() = 0;
}
// need a valid cursor. (Lgb)
cur.clearSelection();
//lyxerr << "cap::eraseSelection end: " << cur << endl;
}