commit 244969330108a89f4be93d3b2eb9024bdb756204
Author: Jean-Marc Lasgouttes <[email protected]>
Date: Thu Dec 21 16:33:06 2023 +0100
Do not compute metrics at each preview when loading file
With the branch-test.lyx file from #12297, loading takes forever when
previews are activated. This is because each preview element causes a
full screen metrics recomputation.
This commit just skips these calls and only does one when all previews
have been obtained. As a result, computing the previews takes 1 second
instead of 25 seconds on branch-test.lyx.
Part of bug #12297.
---
src/graphics/PreviewLoader.cpp | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/graphics/PreviewLoader.cpp b/src/graphics/PreviewLoader.cpp
index 4c37f7a8d0..004ced6d89 100644
--- a/src/graphics/PreviewLoader.cpp
+++ b/src/graphics/PreviewLoader.cpp
@@ -787,6 +787,16 @@ void PreviewLoader::Impl::finishedGenerating(pid_t pid,
int retval)
// Remove the item from the list of still-executing processes.
in_progress_.erase(git);
+#if 0
+ /* FIXME : there is no need for all these calls, which recompute
+ * all metrics for each and every preview. The single call at the
+ * end of this method is sufficient.
+
+ * It seems that this whole imageReady mechanism is actually not
+ * needed. If it is the case, the whole updateFrontend/updateInset
+ * bloat can go too.
+ */
+
// Tell the outside world
list<PreviewImagePtr>::const_reverse_iterator
nit = newimages.rbegin();
@@ -795,6 +805,8 @@ void PreviewLoader::Impl::finishedGenerating(pid_t pid, int
retval)
for (; nit != nend; ++nit) {
imageReady(*nit->get());
}
+#endif
+
finished_generating_ = true;
buffer_.scheduleRedrawWorkAreas();
}
--
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