| Commit message (Collapse) | Author | Age | Files | Lines |
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Avoid unreasonable threshold values for extremely wide pens, since
that can lead to a very high processing cost.
The rare usecases where this would make a noticeable difference will
necessarily also be using scaling, and so is anyway depending on
setting a suitable curve threshold manually.
Fixes: QTBUG-77241
Change-Id: I27cea7d566d144389bb430739fde4f6033c4a28c
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
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Simply return a Glyph pointer and not a QImage to avoid allocating and
deleting lots of d pointers for QImage when drawing text. Saves one
new/delete pair per glyph drawn and speeds up text drawing by 10% for
relatively large glyphs (probably more for smaller ones).
The qtext::paintLayoutToPixmap() benchmark shows a 16% improvement
in performance with this change.
Renamed the method to glyphData().
Change-Id: I7a353de521e4f4321c770fb1ac6043d33f6f332c
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
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Added checking corner cases (more specific formulas) in
color_dodge_op()/color_dodge_op_rgb64() and color_burn_op()/color_burn_op_rgb64()
to produce correct results for any input.
Task-number: QTBUG-77231
Change-Id: I274f80b356bd4236a9176a84a95604c2eb01787a
Reviewed-by: Konstantin Tokarev <annulen@yandex.ru>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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Amends 2aa9908e24611fa6d321e694b8415ba7e8d364b0
Change-Id: I2883ca27b06b2b414b4991b2dab3f84100b4c853
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Makes it safe to sample pixel coordinates above 32767.
Fixes: QTBUG-76829
Change-Id: I5965afef1bd65106fcfc130dd37572309eacbe42
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
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Color fonts may also contain regular alphabet characters that
should be rendered with the current pen. In Qt, however, these
characters were drawn into the cache with a default pen color
of black.
Since all characters in a font is currently backed by the same cache,
and it would require a lot of plumbing to get around this, a step
in the right direction is to include the current pen color in the
cache as long as it is an RGB cache. This means that drawing
text with the color font with different pen colors will create
different caches.
There is no API to select font color on Freetype currently, but
this problem has also not been observed there, as the fonts
in question, with both regular and color glyphs, are not being
detected as color fonts (so the text color will be correct).
So Freetype will be left out for now.
[ChangeLog][QtGui][Text] Fixed bug where regular text rendered
with a color font would always display in black.
Task-number: QTBUG-55096
Task-number: QTBUG-74761
Change-Id: Icc7dbf73241db1e7cc6a0de18c2de927aeecf713
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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The code for generating round line joins is optimized with a shortcut
for the inner, normally invisible joins. For certain joins of a
tightly turning bezier, this optimization would lead to visible
painting error. Fix by avoiding the optimization if the next control
point is so close as to allow such tight turns.
As a driveby, make the angle > 90 test cheaper, since absolute
precision is not required in the optimization choice.
Fixes: QTBUG-75008
Change-Id: I293e0776003310dc36fa7f43fbcd9c25f1f8fa5d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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More aggressively skip processing empty spans.
Tested with the qpainter benchmark on armv7; yields
small but measurable improvement.
Change-Id: Ie0ed0f824a0be7bcc2de3a9aa98ebccb0e8accae
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
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Many operations on and with QPainterPaths do calculations on the path
coordinates, e.g. computing the distance between points, which may cause
numerical overflow for extreme coordinate values. This patch
introduces a limit on the coordinate values and extends the previous
check against nan/inf coordinates to also check against out of range
coordinates.
Fixes: QTBUG-75574
Change-Id: I3a2fa88bfc6a9f19934c43d3dbbfb41855c78107
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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scanLine is overflowing with big images. Similar change was made in
4f88475a962975ca45994cff9add350344fce4f9 to fix the same issue with
QImage::scanLine.
Fixes: QTBUG-75082
Change-Id: Ifedf28fa9a303c189dfcd12bd4ec11f438540c2e
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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If an application enables FP exceptions our FP-based unpremul will
raise the INVALID exception. Since disabling them locally might be slow
just take a slow path when detected.
Fixes: QTBUG-75592
Change-Id: Ie22a032a4f62229f68ad21ede359c62291adc9bf
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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The bezier shifting algorithm compared coordinates exactly, and so
could end up in an endless loop when values were at the edge of the
number resolution. Fix by using fuzzy comparison instead.
Fixes: QTBUG-75522
Change-Id: I61346edbd87389f66965a906ac337fc1f5300e5c
Reviewed-by: Robert Loehning <robert.loehning@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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The full stroker does not produce good results for aliased lines
thinner than 1 pixel. Avoid it by making sure that such thin lines
are painted by the cosmetic stroker, even when they have
non-uniform transformation.
Fixes: QTBUG-73866
Change-Id: I7b5f0fa555903246e0c3fd92cd435cc8c0b15a24
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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The dash stroker did not check for inf/nan coordinates.
Fixes: QTBUG-47887
Change-Id: I1e696cd15cc37d8fcb6a464cac3da33c3a8b95c2
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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We now use QCFType to track the CGContextRef, instead of manually
maintaining the lifetime of the context. A bunch of unused methods
were removed, including completely broken ones like isNull().
Change-Id: Ib5a05aadbf8f228192e74c9a4c8919580b831497
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
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This runtime warning was recently introduced in the fix for an
assert/crash when creating a brush with an invalid Preset
value. However, that overlooked the usage where an unknown value is
passed to QGradient constructor, and the code afterwards checks if
the result is a NoGradient or not. It turns out that such usage is
already established as legitimate, including in the Qt Quick Rectangle
code, so this warning would be spit out continuously for perfectly
legal qml code.
Change-Id: Id60aed0817da0214b6cf17edd245f67e26470413
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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The QBrush constructor taking a QGradient would assert or crash if
passed a null (NoGradient) gradient. But it is not necessary for the
API to be as brittle as that: instead the result can simply be a null
QBrush object, i.e. the same as the default QBrush() constructor
creates (style == NoBrush).
This issue comes up now since with the recent introduction of
QGradient presets, the API opens for using QGradient directly, whereas
earlier, only the subclasses QLinearGradient etc. were to be used.
Fixes: QTBUG-74648
Change-Id: I1a9b1c4654e4375aa6684700a262cc0946851448
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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0bc42886898 in Qt 5.6 introduced support for premultiplied alpha in the
raster-rendered QWidget content. Unfortunately this introduced a
regression for OpenGL content from QOpenGLWidgets with WA_StacksOnTop
set: these used standard alpha blending in 5.5 and earlier, and
switching them to premultiplied (in case the - unrelated - raster
content has a _Premultiplied QImage format) breaks all content that
was done with non-premultiplied alpha in mind, for example the qopenglwidget
example's "Transparent background" checkbox.
Restore the pre-5.6 behavior.
Fixes: QTBUG-74285
Change-Id: I76fcadd53cd436efa2b619b8d6739270995d044f
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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Avoid using inline assembler
Task-number: QTBUG-72716
Change-Id: I696efb5a787416eb4fc5ba3a250461aaa9a4afc2
Reviewed-by: Janne Koskinen <janne.p.koskinen@qt.io>
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Otherwise we can end up in an infinite loop of splitting the curve and
then discarding the half of the new curve, etc.
Fixes: QTBUG-74172
Change-Id: I1984b7fd33cd98f65866f1c57c6ab20114615803
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
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For extreme coordinates, the rasterizer's width parameter could become
NaN, which compares false with everything and hence would trigger an
assert.
Fixes: QTBUG-56434
Change-Id: I27abae6ab0bc94ce042be86ea0587095cdb7d487
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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Some platform backing stores may require that the window has been
created, so let's defer the platform backingstore creation until
absolutely necessary.
Change-Id: Ib93151c6473e3bbe77d994782d84289c2f63bcf2
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Change-Id: I8e85706727a8c5f7585e34e3864c8a9f48481b92
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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The non-qualified hue() and saturation() etc. refers to those values
in the HSV, not HSL, color model. Make this more explicit in the
documentation to avoid confusion.
Task-number: QTBUG-73129
Change-Id: Ief337672966ac72d0d0c3606d8d68acf01ffe7ee
Reviewed-by: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
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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>
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For some overly tight beziers where the start or end point and the
next control point are closer than the pen width, the stroker's
shifting algorithm will produce a start/end tangent pointing in the
opposite direction from what is expected, for one of the sides. This
would break the square and round capping logic. Fix by detecting the
situation in the capping function and reversing the tangent when
necessary.
Change-Id: I48f4f017403d7b289b0483dd2b3a7ff1bbd0cf2a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Change-Id: I0a2553b95b099fdfa83d42e71bdf9a192a6588c7
Reviewed-by: Jani Heikkinen <jani.heikkinen@qt.io>
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The code path for re-generating the texture already has the unlock, but the
non-regenerating code-path was missing an unlock, causing asserts when the
graphics buffer was then attempted to be locked (again) at a later point.
Change-Id: Ic65add838360079829b7e81d7c1cfe2274959059
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Change-Id: Icebd151eae0cf9d400319a42573290d1a911ce26
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A previous change that extended the maximum PDF size has caused the
generation of invalid PDF output when the current locale was set to
something using commas instead of points when outputting floating
point numbers through printf(). This change uses QByteArray::number()
instead, which uses points, irrespective of the current locale.
Fixes: QTBUG-72868
Fixes: QTBUG-72848
Change-Id: I292eba2d6c89b3e01957bb8c04c04bdca8ada316
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Tobias Koenig <tobias.koenig@kdab.com>
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error #68: integer conversion resulted in a change of sign
Change-Id: I4ac1156702324f0fb814fffd156f80962df6b4a7
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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Qt for Python users reading the documentation assume that int(0) can
be passed for pointer parameters. Use the newly introduced \nullptr to
disambiguate this.
In a follow-up step, the \nullptr macro can be defined as None
when generating the Qt for Python documentation.
Task-number: PYSIDE-903
Change-Id: I3a45f87175a0668ab5f3f95f0aff409f7e3ef027
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>
Reviewed-by: Christian Tismer <tismer@stackless.com>
Reviewed-by: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
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In function 'QRgba64 rgbBlend(QRgba64, QRgba64, uint)':
error: 'blend.QRgba64::rgba' is used uninitialized in this function [-Werror=uninitialized]
qrgba64_p.h:246:13: note: 'blend' was declared here
QRgba64 blend;
Change-Id: I7b263f863281c51c7d8099704f2cffcc7e1a07df
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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When glyphs are converted to monochrome from an alpha map,
it does not make sense to apply high quality dithering, because
the result will be that some the subpixels along the edges
that cover only part of a pixel are filled. This causes the
glyphs to look jagged and ugly.
Instead, we use ThresholdDither to fill all pixels that are
>= 50% opacity.
[ChangeLog][QtGui][Text] Improved appearance of monochrome
text on some platforms.
Fixes: QTBUG-69702
Change-Id: I0f44a8d73f6b9f1eb59f297d66438575f1e9db10
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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Change-Id: I88182d5d95fda15d33836f16dee78167685b3765
Fixes: QTBUG-72392
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
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Useful for testing.
Change-Id: I8cfd4453018cba0301287ad6a1c15a88cdc33c1c
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
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The alignment of long long on 32-bit windows is only 32-bits, but we
should be safe to assume it is aligned at 64-bit.
Since QRgba64 is a public type, we can't fix the alignment there without
breaking ABI, so instead fix it where temporary buffers are allocated.
At the same time be consistent about using QRgba64 so we can switch to it
enforcing alignment in Qt6.
Change-Id: Ie15c305bc867c62a13df8eb2b1678e92174e1f97
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Removes assumptions about QImage format in a few places.
Change-Id: I515701be53190429a48956c31986fa0804806406
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Change-Id: Ibf979837e1adcadcbb100d059b06b1a48157eab6
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Change-Id: Ic1dd39044e19f50e1068d4ac70dacaad6440e570
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These are minor typos or documentation warnings that snuck in with
new features.
Task-number: QTBUG-71502
Change-Id: I03669cfecc3c3d80168ff7b1ca8bca7571e06d25
Reviewed-by: Martin Smith <martin.smith@qt.io>
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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>
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Conflicts:
.qmake.conf
qmake/Makefile.unix
src/gui/text/qtextdocument.cpp
src/gui/text/qtextdocument.h
Change-Id: Iba26da0ecbf2aa4ff4b956391cfb373f977f88c9
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Found with clazy
Change-Id: Ied84c0fa95a7ae7b7791e167695acfc7877f7e25
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
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Change-Id: I75386b948763bbe784fc36abe7e69696bc04219d
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
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The opacity set on a QPainter was being ignored for drawImage()/drawPixmap()
calls when rendering to a PDF file through QPdfWriter/QPrinter. This change
fixes it for PDF files v1.4 (default version) or v1.6. For PDF/A-1b files,
opacity will remain ignored to ensure compliance with the specification.
Task-number: QTBUG-70752
Change-Id: I4280e898698e0367dfb4c6ac2cd14ca2bf98850e
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
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There is no sense in testing the 'm_array' pointer against null, as the
memory was allocated using the 'new' operator. The exception will be
generated in the case of memory allocation error.
Task-number: QTBUG-71156
Change-Id: Ib76d16d38d2b0b0c4c9fae3d8d5bdd86af0d08ff
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Qt's PDF engine previously supported only the PDF v1.4 standard, which
only allows pages of up to 200x200in (about 5x5m). This patch optionally
enables the generation of PDF v1.6-compliant files that allow the
redefinition of user space units, so that pages of up to 381x381km are
now possible. By default, generated files are compliant to v1.4 spec.
v1.6 compliance must be enabled by, e.g., calling QPrinter::setPdfVersion()
with QPrinter::PdfVersion_1_6. PDF v1.6-compliant files require Adobe
Reader 7.0 or newer (also worked with the built-in viewers in current
versions of Chrome, Firefox and Edge).
Task-number: QTBUG-69386
Change-Id: I21708e0d465d5d7d9e46ff06dd04acfe1dfb0858
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
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There is no need to call a memset as long as class is initialized with
new and default-constructor will initialize values.
Change-Id: I02f9ec524e32cb72713f6b5e37b60f3dec72fb28
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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Change-Id: Iaf28977e7ecf566b28b9406dcb005d48621169c2
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