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Avoid some full metrics computations related to math previews
When entering/leaving a math hull inset, a Update::Force flag was set, in case the metrics of the inset would change because of a switch between normal and preview representation. When entering the inset, this code is now used only when the inset was in preview mode. In both cases, Update::Force is replaced with Update::SinglePar. This requites in Text::dispatch to honor Update::SinglePar when it has been set by some lfun, even when singleparupdate is false. Part of bug #12297.
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@ -6386,7 +6386,7 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
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// FIXME: the following code should go in favor of fine grained
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// FIXME: the following code should go in favor of fine grained
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// update flag treatment.
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// update flag treatment.
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if (singleParUpdate) {
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if (singleParUpdate || cur.result().screenUpdate() & Update::SinglePar) {
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// Inserting characters does not change par height in general. So, try
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// Inserting characters does not change par height in general. So, try
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// to update _only_ this paragraph. BufferView will detect if a full
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// to update _only_ this paragraph. BufferView will detect if a full
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// metrics update is needed anyway.
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// metrics update is needed anyway.
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@ -902,7 +902,7 @@ bool InsetMathHull::notifyCursorLeaves(Cursor const & old, Cursor & cur)
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{
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{
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if (RenderPreview::previewMath()) {
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if (RenderPreview::previewMath()) {
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reloadPreview(old);
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reloadPreview(old);
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cur.screenUpdateFlags(Update::Force);
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cur.screenUpdateFlags(Update::SinglePar);
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}
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}
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return false;
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return false;
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}
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}
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@ -2273,14 +2273,17 @@ void InsetMathHull::handleFont2(Cursor & cur, docstring const & arg)
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void InsetMathHull::edit(Cursor & cur, bool front, EntryDirection entry_from)
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void InsetMathHull::edit(Cursor & cur, bool front, EntryDirection entry_from)
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{
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{
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bool const has_preview = previewState(&cur.bv());
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cur.push(*this);
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cur.push(*this);
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bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_LEFT ||
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bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_LEFT ||
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(entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
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(entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
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enter_front ? idxFirst(cur) : idxLast(cur);
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enter_front ? idxFirst(cur) : idxLast(cur);
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// The inset formula dimension is not necessarily the same as the
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if (has_preview) {
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// one of the instant preview image, so we have to indicate to the
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// The inset formula dimension is in general different from the
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// BufferView that a metrics update is needed.
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// one of the instant preview image, so we have to indicate to the
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cur.screenUpdateFlags(Update::Force);
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// BufferView that a metrics update is needed.
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cur.screenUpdateFlags(Update::SinglePar);
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}
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}
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}
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