We translate all pure gray colors into cmyk having c,m,y=0 and only
the k value expressing the darkness. But a fix introduced to avoid
division by 0 caused rgb(0, 0, 0) to be an exception to this; it ended
up being translated as c,m,y,k=1 instead.
Fix by catching the potential div-by-0 situation earlier and directly
set the orthodox cmyk translation: c,m,y=0,k=1.
Fixes: QTBUG-73171
Change-Id: I3774eaf9d96e096ac5c47c55d28881bea2bd1309
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
We document being able to parse more than 8-bit per color, but were
ignoring everything after the first 8 bits.
Change-Id: Ic85ab04b0836e6979a623e294eebd5084c1a9478
Fixes: QTBUG-71373
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Initialize the lastDir properly, to avoid the stroking algorithm doing
direction-change handling for a single line. That could cause a cap to
be painted for a single FlatCap line.
Also fixes a bug in tst_qpainter, revealed by the above fix. The
result drawPolyline was erroneously compared to the result of drawing
the lines individually, for a case where the former correctly paints
the pixel of the join point in the corner, while the latter by
coincidence used to paint the same pixel as a cap because of the bug
above.
Task-number: QTBUG-70101
Change-Id: Ie20eda33214cfe9e7627f17ef4c7a5b3835c9c24
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Adds support for 16bit per color image formats in QImage. This makes it
possible to read and write 16bpc PNGs, and take full advantage of the
16bpc paint engine.
[ChangeLog][QtGui][QImage] QImage now supports 64bit image formats with
16 bits per color channel, compatible with 16bpc PNG or RGBA16 OpenGL
formats.
Task-number: QTBUG-45858
Change-Id: Icd28bd5868a6efcf65cb5bd56031d42941e04099
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
ObjectBoundingMode has inconsistent behavior and is deprecated in
favor of ObjectMode.
Change-Id: I748f6283f3db5869bb9a67c08bf5f16abc6f95b0
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
The implementation of QTransform::transposed() had a wrong assumption
about the type of the result.
Task-number: QTBUG-68630
Change-Id: Ia5ce794efe773d74fb5fdaff3da8cae2b452e7e5
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Similar to Qt::GlobalColor, the presets allow the user to create
brushes based on predefined gradients, quickly getting pretty pixels
on screen.
The presets are based on the linear gradients from WebGradients, a
free collection of gradients, hosted at https://webgradients.com/.
The few radial and blended gradient presets have been excluded.
Change-Id: I1ce8f2210a6045c9edb8829ab3eddcc313549127
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
QDesktopWidget::screenGeometry() and similar was deprecated in 5.11
and replaced by QScreen::geometry()
Change-Id: Ic630d022bc6461af78f49684c8ac9d1836d738bc
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
The NEON implementation uses rsqrt and thus can not be taken on 0, so
replace the minimum with something close to zero instead of zero.
Task-number: QTBUG-59961
Change-Id: Ia39e45be675b056c1e22900495ce9ba4e8b70e5f
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>
Clipping enabled state would not always be correctly restored for the
raster engine (other engines work fine). The raster engine's QClipData
object is sometimes shared between painter state objects on the
save/restore stack. QClipData has its own enabled flag, and this could
then come out of sync. Fix by making sure we sync the enabled state on
restore.
Task-number: QTBUG-58789
Change-Id: I81e6254ebb93df6e153bbef58e32a885273e3224
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
The Embedded Android build (Boot to Qt Android injection) is defined by
having both Q_OS_ANDROID and Q_OS_ANDROID_EMBEDDED flags defined,
as well as having Qt config android-embedded.
This commit enables the possibility to build embedded Android builds.
(i.e. Qt build for Android baselayer only, without JNI)
Change-Id: I8406e959fdf1c8d9efebbbe53f1a391fa25f336a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
QFontMetrics(F)::width() has been deprecated and is replaced by
horizontalAdvance(). This updates all usage of it in tests and
documentation.
It is worth noting that many or most of the usages of
QFontMetrics::width() probably intended to use boundingRect().width(),
but since it currently works, I have not looked into that, just
replaced the function name mechanically.
Change-Id: Iec382e5bad0b50f37a6cfff841bfb46ed4d4555f
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The introduction of begin()/end() actually made most tests
that still use rects() duplicates. Keep them, though, for
test coverage (rects() takes a very different code path
from begin()/end()), but, under the assumption that Qt at
some point will default to built with deprecated APIs dis-
abled, make the test compile with disabled deprecated API.
Port some checks that still used rects() to begin()/end().
Change-Id: Ia7da80f0cd6ef69693f54a474924683624a2c3eb
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The vast majority is actually switched to QRandomGenerator::bounded(),
which gives a mostly uniform distribution over the [0, bound)
range. There are very few floating point cases left, as many of those
that did use floating point did not need to, after all. (I did leave
some that were too ugly for me to understand)
This commit also found a couple of calls to rand() instead of qrand().
This commit does not include changes to SSL code that continues to use
qrand() (job for someone else):
src/network/ssl/qsslkey_qt.cpp
src/network/ssl/qsslsocket_mac.cpp
tests/auto/network/ssl/qsslsocket/tst_qsslsocket.cpp
Change-Id: Icd0e0d4b27cb4e5eb892fffd14b5285d43f4afbf
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
ultrix and reliant have not seen a release since 1995. dgux not since
2001. bsdi not since 2003. irix not since 2006. osf not since 2010.
dynix... unclear, but no later than 2002. symbian needs no mention.
All considered obsolete, all gone.
sco and unixware are effectively obsolete. Remove them until someone
expresses a real need.
Change-Id: Ia3d9d370016adce9213ae5ad0ef965ef8de2a3ff
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Fix a number of issues that caused polygons to not always be drawn
fully connected.
Ensures the original lastPixel is set when drawing closed polygons,
ensure we don't round away from the original starting point, and add
handling of edges that need to be rounded half a pixel sideways to line
up with endpoints.
Task-number: QTBUG-27053
Change-Id: Ib51ee5623a629996af51a0967096383f04e91e2f
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Especially in examples, where we should show off our convenience
functions, prefer calling these functions over doing arithmetic with
M_PI (or approximations thereto) and 180 (give or take simple
factors). This incidentally documents what's going on, just by the
name of the function used (and reveals at least one place where
variables were misnamed; the return from atan is in radians, *not*
degrees).
Task-number: QTBUG-58083
Change-Id: I6e5d66721cafab423378f970af525400423e971e
Reviewed-by: Jüri Valdmann <juri.valdmann@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Use M_PI (and friends), where possible, in favor of hand-coded
approximations of various (in)accuracies. Where that's not available
(e.g. fragment shaders), use the same value that qmath.h uses for
M_PI, for consistency. Replaced math.h with qmath.h in places that
defined a fall-back in case math.h omits it (it's not in the C++
standard, although M_PI is in POSIX); or removed this entirely where
it wasn't used.
Reworked some code to reduce the amount of arithmetic needed, in the
process; e.g. pulling common factors out of loops. Revised an
example's doc to not waste time talking about using a six-sig-fig
value for pi (which we no longer do) - it really wasn't relevant, or
anything to be proud of; nor did the doc mention its later use.
Task-number: QTBUG-58083
Change-Id: I5a31e3a2b6a823b97a43209bed61a37b9aa6c05f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We have to use a temporary data path for winrt, as the applications
are sandboxed and cannot just put data anywhere.
Change-Id: I8f95de132e5b5ac77441cbbf26af873b8018c7cb
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Corresponds to the similar function QPainterPath::intersects() and is
faster than calculating the intersection and then checking if it is
empty.
Change-Id: I694bb2206ed330a456a41d4118a952a68177b7a2
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
QPainterPath could in certain cases where sub-path points were on the
border of a rect fail to calculate intersects() correctly.
The patch adds handling of such cases by looking if end points cross in
or out of the rect. Other cases are already caught.
Task-number: QTBUG-31551
Change-Id: I6284da8ff8646d4636702923a76362302dde5767
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
The intersection algorithm for intersection with rects, might return
one edge of the rect even if that edge does not intersect with the path.
To deal with that we collapse paths with empty bounding rects to the empty path.
Task-number: QTBUG-60024
Change-Id: I3e305983c66548e772d7d7ce3de99d715edbdd1b
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
... for calculated test data names.
In tst_qimage.cpp, use QLatin1String instead of QString for image
format pretty-printing, to avoid needless memory allocation and, more
importantly in the context of this patch, to make the result usable
with addRow(), which does not support %ls.
Change-Id: Ib1953aee2da235ae912917a450491ac8be69ca3a
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
If we do not the fontDef of the multifont will be the default 0.
Task-number: QTBUG-59443
Change-Id: Ib223517975b2a57b2371e309d12cd8f918d30825
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
... leveraging the existing support for QLatin1String, which is the
char equivalent of QStringView.
The only noteworthy changes here are the port of the low-level
functions to size_t and that the internal template function,
setColorFromString(), can now take its argument by value, since only
views are ever passed to it anymore.
In the test, used new QTest::addRow() to format test names, and
introduced temporaries to avoid re-calculating the same input values
for every check.
Change-Id: Ia3c59e5c435ff753f34993a8d85c0c0b4e8e2b22
Reviewed-by: Milian Wolff <milian.wolff@kdab.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The cumbersome complex calls to QMatrix were surely easy to write
thanks to copy-and-paste; but this left the reader to either
laboriously check or guess that all the copies were the same (and
notice that there were two, in fact). DRY.
Since QMatrix wants qreal data, change the float deg angle to a qreal
and work in qreal throughout. Passing the angle to a function instead
of repeating it obviates the need for a local variable in the calling
code, to hold its value.
Change-Id: I6bb4adf438a893083ca19f27942502c1e5c518aa
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
The ARGB32PM code-path doesn't have enough precision to accurately
render ARGB32 images, but the RGB64 code-path does. Since this is
already a slow configuration and the most costly part is the conversion
we can switch to the more accurate code-path for little cost.
Task-number: QTBUG-55720
Change-Id: Ifa0afba8d8cc0c2f699bb91f51726f4ee5228f3e
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
The function was incorrectly handling green and blue color channels
causing them to be dropped. This affects drawing non 32-bit images onto
10-bit per color channels formats such as RGB30.
Change-Id: I9211e253b1a9da0dada5c418d592a8f531265989
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
The alpha channel of an RGB32 image was not properly ignored when doing
blending with partial opacity.
Now the alpha value is properly ignored, which is both more correct
and faster. This also makes SSE2 and AVX2 implementations match NEON
which was already doing the right thing (though had dead code for
doing it wrong).
Change-Id: I4613b8d70ed8c2e36ced10baaa7a4a55bd36a940
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Turns the two set of tables in QDrawHelperGammaTables into two
QColorProfile classes that use similar structures and can be reused for
other gamma correction.
At the same time clean-up and improve the comma-correct blending code
to use the new profiles and QRgba64 precision.
Change-Id: I302bd87a5c836e1010fff6d633eeb56fd4ae2ff0
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
