drawinglayer/source/primitive2d/textlayoutdevice.cxx | 2
include/vcl/outdev.hxx | 5 ++
svgio/qa/cppunit/SvgImportTest.cxx | 42 +++++++++----------
vcl/source/outdev/outdev.cxx | 1
vcl/source/outdev/text.cxx | 27 +++++++++++-
5 files changed, 55 insertions(+), 22 deletions(-)
New commits:
commit ba462658d955b6d7909f9ffbdfd341f18aff2028
Author: Armin Le Grand (collabora) <armin.legr...@collabora.com>
AuthorDate: Thu Aug 21 13:02:41 2025 +0200
Commit: Armin Le Grand <armin.le.gr...@me.com>
CommitDate: Tue Aug 26 10:45:00 2025 +0200
tdf#168002 CairoSDPR breaks SVG text layout
SubpixelPositioning was until now activated when *any* MapMode was set,
but there is another case this is needed: When a
TextSimplePortionPrimitive2D is rendered by a SDPR.
In that case a TextLayouterDevice is used (to isolate all Text-related
stuff that should not be at OutputDevice) combined with a 'empty'
OutDev -> no MapMode.
The DXArray for Primitives (see that TextPrimitive) is defined in the
Unit-Text_Coordinate-System, thus in (0..1) ranges. That allows to
have the DXArray transformation-independent and thus re-usable and
is used since the TextPrimitive was created.
If there is a DXArray missing at the text Primitive (as is the case
with SVG imported ones, but allowed in general) one gets automatically
created during the SalLayout creation for rendering. Unfortunately there
(see GenericSalLayout::LayoutText, usages of GetSubpixelPositioning) the
coordinates get std::round'ed, so all up to that point correctly
calculated metric information in that double-precision dependent coordinate
space gets *shredded*.
To avoid that, SubpixelPositioning has to be activated. While this
might be done in the future for all cases (SubpixelPositioning ==
true), for now add this case for all usages of TextLayouterDevice to
not break old stuff.
NOTE: Due to higher precision I had to adapt some values for SVGIO
tests: That is expected since higher precision leads to less-wide
results internally. I checked testdocs that deviations are minimal and
have better quality with SubpixelPositioning then before.
Change-Id: Iab5aa6336cdb18224fd06472bf6badc9eb0fce3a
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/189993
Reviewed-by: Armin Le Grand <armin.le.gr...@me.com>
Tested-by: Jenkins
diff --git a/drawinglayer/source/primitive2d/textlayoutdevice.cxx
b/drawinglayer/source/primitive2d/textlayoutdevice.cxx
index 5c0b31254c63..e92732fd1751 100644
--- a/drawinglayer/source/primitive2d/textlayoutdevice.cxx
+++ b/drawinglayer/source/primitive2d/textlayoutdevice.cxx
@@ -162,6 +162,8 @@ void releaseGlobalVirtualDevice()
TextLayouterDevice::TextLayouterDevice()
: mrDevice(acquireGlobalVirtualDevice())
{
+ // tdf#168002 activate SubpixelPositioning for al TextLayouterDevice-calls
+ mrDevice.setSubpixelPositioning(true);
}
TextLayouterDevice::~TextLayouterDevice() COVERITY_NOEXCEPT_FALSE {
releaseGlobalVirtualDevice(); }
diff --git a/include/vcl/outdev.hxx b/include/vcl/outdev.hxx
index ce8a5efc28c3..0538198be64f 100644
--- a/include/vcl/outdev.hxx
+++ b/include/vcl/outdev.hxx
@@ -246,6 +246,7 @@ private:
mutable bool mbTextSpecial : 1;
mutable bool mbRefPoint : 1;
mutable bool mbEnableRTL : 1;
+ mutable bool mbSubpixelPositioning : 1;
protected:
mutable std::shared_ptr<vcl::font::PhysicalFontCollection>
mxFontCollection;
@@ -1279,6 +1280,10 @@ public:
virtual void EnableRTL( bool bEnable = true);
bool IsRTLEnabled() const { return mbEnableRTL; }
+ // tdf#168002 allow SubpixelPositioning for this device (default: false)
+ bool isSubpixelPositioning() const { return mbSubpixelPositioning; }
+ void setSubpixelPositioning(bool bNew) { mbSubpixelPositioning = bNew; }
+
bool GetTextIsRTL( const OUString&, sal_Int32
nIndex, sal_Int32 nLen ) const;
///@}
diff --git a/svgio/qa/cppunit/SvgImportTest.cxx
b/svgio/qa/cppunit/SvgImportTest.cxx
index d87ce85e03c8..529ac1e9381e 100644
--- a/svgio/qa/cppunit/SvgImportTest.cxx
+++ b/svgio/qa/cppunit/SvgImportTest.cxx
@@ -790,7 +790,7 @@ CPPUNIT_TEST_FIXTURE(Test, testTdf156777)
{
xmlDocUniquePtr pDocument =
dumpAndParseSvg(u"/svgio/qa/cppunit/data/tdf156777.svg");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion", 23);
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion", 22);
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]",
"text", u"Quick brown fox jumps over the lazy dog.");
// Without the fix in place, this test would have failed with
@@ -872,17 +872,17 @@ CPPUNIT_TEST_FIXTURE(Test, testTdf93583)
xmlDocUniquePtr pDocument =
dumpAndParseSvg(u"/svgio/qa/cppunit/data/tdf93583.svg");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]",
"text", u"This is the");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]", "x",
u"58");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]", "x",
u"56");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]", "y",
u"303");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]",
"width", u"16");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]",
"height", u"16");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]",
"text", u" first ");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]", "x",
u"125");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]", "x",
u"122");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]", "y",
u"303");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]",
"width", u"32");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]",
"height", u"32");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]",
"text", u"line");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]", "x",
u"192");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]", "x",
u"190");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]", "y",
u"303");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]",
"width", u"16");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]",
"height", u"16");
@@ -902,22 +902,22 @@ CPPUNIT_TEST_FIXTURE(Test, testTdf156616)
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]", "x",
u"114");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]", "y",
u"122");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[4]",
"text", u"First ");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[4]", "x",
u"85");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[4]", "x",
u"83");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[4]", "y",
u"153");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[5]",
"text", u"line ");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[5]", "x",
u"118");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[5]", "x",
u"117");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[5]", "y",
u"153");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[6]",
"text", u"Second line");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[6]", "x",
u"77");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[6]", "x",
u"76");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[6]", "y",
u"172");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[7]",
"text", u"First ");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[7]", "x",
u"55");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[7]", "x",
u"53");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[7]", "y",
u"203");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[8]",
"text", u"line ");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[8]", "x",
u"88");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[8]", "x",
u"86");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[8]", "y",
u"203");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[9]",
"text", u"Second line");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[9]", "x",
u"40");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[9]", "x",
u"39");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[9]", "y",
u"222");
}
@@ -1486,11 +1486,11 @@ CPPUNIT_TEST_FIXTURE(Test, testTextAnchor)
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]", "y",
u"40");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]",
"text", u"ABC");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]", "x",
u"43");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]", "x",
u"44");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]", "y",
u"50");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[2]",
"text", u"ABC");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]", "x",
u"26");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]", "x",
u"27");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]", "y",
u"60");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]",
"text", u"ABC");
@@ -1498,11 +1498,11 @@ CPPUNIT_TEST_FIXTURE(Test, testTextAnchor)
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[4]", "y",
u"40");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[4]",
"text", u"ABC");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[5]", "x",
u"43");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[5]", "x",
u"44");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[5]", "y",
u"50");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[5]",
"text", u"ABC");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[6]", "x",
u"26");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[6]", "x",
u"27");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[6]", "y",
u"60");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[6]",
"text", u"ABC");
@@ -1510,11 +1510,11 @@ CPPUNIT_TEST_FIXTURE(Test, testTextAnchor)
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[7]", "y",
u"40");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[7]",
"text", u"ABC");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[8]", "x",
u"43");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[8]", "x",
u"44");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[8]", "y",
u"50");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[8]",
"text", u"ABC");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[9]", "x",
u"26");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[9]", "x",
u"27");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[9]", "y",
u"60");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[9]",
"text", u"ABC");
@@ -1533,7 +1533,7 @@ CPPUNIT_TEST_FIXTURE(Test, testTextAnchor)
// Without the fix in place, this test would have failed with
// - Expected: 43
// - Actual : 54
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[13]",
"x", u"43");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[13]",
"x", u"44");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[13]",
"y", u"50");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[13]",
"text", u"A");
@@ -1541,19 +1541,19 @@ CPPUNIT_TEST_FIXTURE(Test, testTextAnchor)
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[14]",
"y", u"50");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[14]",
"text", u"B");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[15]",
"x", u"65");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[15]",
"x", u"66");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[15]",
"y", u"50");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[15]",
"text", u"C");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[16]",
"x", u"26");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[16]",
"x", u"27");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[16]",
"y", u"60");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[16]",
"text", u"A");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[17]",
"x", u"38");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[17]",
"x", u"39");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[17]",
"y", u"60");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[17]",
"text", u"B");
- assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[18]",
"x", u"48");
+ assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[18]",
"x", u"49");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[18]",
"y", u"60");
assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[18]",
"text", u"C");
}
diff --git a/vcl/source/outdev/outdev.cxx b/vcl/source/outdev/outdev.cxx
index 21fcae0543c7..cd5fa7b76393 100644
--- a/vcl/source/outdev/outdev.cxx
+++ b/vcl/source/outdev/outdev.cxx
@@ -117,6 +117,7 @@ OutputDevice::OutputDevice(OutDevType eOutDevType) :
mbTextSpecial = false;
mbRefPoint = false;
mbEnableRTL = false; // mirroring must be
explicitly allowed (typically for windows only)
+ mbSubpixelPositioning = false; // tdf#168002 allow
SubpixelPositioning (default: false)
// struct ImplMapRes
maMapRes.mnMapOfsX = 0;
diff --git a/vcl/source/outdev/text.cxx b/vcl/source/outdev/text.cxx
index febf5f433810..4cd9cdbe5b8c 100644
--- a/vcl/source/outdev/text.cxx
+++ b/vcl/source/outdev/text.cxx
@@ -1253,7 +1253,32 @@ std::unique_ptr<SalLayout> OutputDevice::ImplLayout(
std::unique_ptr<SalLayout> pSalLayout = mpGraphics->GetTextLayout(0);
if (pSalLayout)
- pSalLayout->SetSubpixelPositioning(mbMap);
+ {
+ const bool bActivateSubpixelPositioning(IsMapModeEnabled() ||
isSubpixelPositioning());
+ // tdf#168002
+ // SubpixelPositioning was until now activated when *any* MapMode was
set, but
+ // there is another case this is needed: When a
TextSimplePortionPrimitive2D
+ // is rendered by a SDPR.
+ // In that case a TextLayouterDevice is used (to isolate all
Text-related stuff
+ // that should not be at OutputDevice) combined with a 'empty' OutDev
-> no
+ // MapMode used. It now gets SubpixelPositioning at it's OutDev to
allow
+ // checking/usage here.
+ // The DXArray for Primitives (see that TextPrimitive) is defined in
the
+ // Unit-Text_Coordinate-System, thus in (0..1) ranges. That allows to
+ // have the DXArray transformation-independent and thus re-usable and
+ // is used since the TextPrimitive was created.
+ // If there is a DXArray missing at the text Primitive (as is the case
+ // with SVG imported ones, but allowed in general) one gets
automatically
+ // created during the SalLayout creation for rendering. Unfortunately
there
+ // (see GenericSalLayout::LayoutText, usages of
GetSubpixelPositioning) the
+ // coordinates get std::round'ed, so all up to that point correctly
+ // calculated metric information in that double-precision dependent
coordinate
+ // space gets *shredded*.
+ // To avoid that, SubpixelPositioning has to be activated. While this
might
+ // be done in the future for all cases (SubpixelPositioning == true)
for now
+ // just add this case with the Primitives to not break stuff.
+ pSalLayout->SetSubpixelPositioning(bActivateSubpixelPositioning);
+ }
// layout text
if( pSalLayout && !pSalLayout->LayoutText( aLayoutArgs, pGlyphs ?
pGlyphs->Impl(0) : nullptr ) )
