diff options
| author | Miklos Vajna <vmiklos@collabora.com> | 2020-02-25 09:04:10 +0100 |
|---|---|---|
| committer | Miklos Vajna <vmiklos@collabora.com> | 2020-02-25 10:59:18 +0100 |
| commit | 22394a468eb8d594501e443bdb84608b6552a8a1 (patch) | |
| tree | 7b208686c007b7912b22fa5d84768d2ff1870dbb /svx | |
| parent | 968fe71f654937727e0708d1070ffabf90b9e527 (diff) | |
svx: cache PNG export of graphic shapes
One scenario where this is useful is: manipulate a JPEG photo in
Online's Impress, e.g. resize it multiple times. Each time we generate
an SVG preview of the shape, which includes the PNG export of the bitmap
itself.
This helps with a desktop CPU:
debug:9976:9974: SVGFilter::filter finished in 3422 ms
debug:9976:9974: SVGFilter::filter finished in 176 ms
But it is meant to help on mobile, too, where writing such a bitmap as
PNG takes 16-17 seconds without this.
(This works because SVG writes the original bitmap, even if it's scaled.
If that invariant will be broken in the future, we still emit correct
output, but then the cache will be less useful.)
Conflicts:
filter/source/svg/svgwriter.cxx
include/svx/svdograf.hxx
include/svx/unoshape.hxx
Change-Id: I7204b04efeeb42c6eec67f04dfdb8a4ed50443a9
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/89411
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Diffstat (limited to 'svx')
| -rw-r--r-- | svx/source/svdraw/svdograf.cxx | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/svx/source/svdraw/svdograf.cxx b/svx/source/svdraw/svdograf.cxx index 0e4413b3764f..b68aec25b2a3 100644 --- a/svx/source/svdraw/svdograf.cxx +++ b/svx/source/svdraw/svdograf.cxx @@ -1265,4 +1265,26 @@ void SdrGrafObj::addCropHandles(SdrHdlList& rTarget) const rTarget.AddHdl(o3tl::make_unique<SdrCropHdl>(Point(basegfx::fround(aPos.getX()), basegfx::fround(aPos.getY())), SdrHdlKind::LowerRight, fShearX, fRotate)); } +void SdrGrafObj::SetPNGPreviewChecksum(BitmapChecksum nPNGPreviewChecksum) +{ + mnPNGPreviewChecksum = nPNGPreviewChecksum; +} + +BitmapChecksum SdrGrafObj::GetPNGPreviewChecksum() const +{ + return mnPNGPreviewChecksum; +} + +void SdrGrafObj::SetPNGPreviewData(SvMemoryStream& rPNGPreviewData) +{ + rPNGPreviewData.Seek(0); + maPNGPreviewData.resize(rPNGPreviewData.remainingSize()); + rPNGPreviewData.ReadBytes(maPNGPreviewData.data(), maPNGPreviewData.size()); +} + +const std::vector<sal_Int8>& SdrGrafObj::GetPNGPreviewData() const +{ + return maPNGPreviewData; +} + /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |