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>
It should be easier to translate sizes in bytes to human-readable
strings consistently rather than having to repeat this code (and the
string translations) in various places. The FileDialog in QtQuick.Controls
has a use for this, too.
[ChangeLog][QtCore][QLocale] Added QLocale::formattedDataSize() for
formatting quantities of bytes as kB, MB, GB etc.
Done-with: Edward Welbourne <edward.welbourne@qt.io>
Change-Id: I27bca146c3eba90fa7a5d52ef6626ce85723e3f0
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
When an archer lets go of the bow-string, she looses an arrow; when
the hounds are straining at their leashes and the handler lets go, he
looses the dogs. It's archaic usage now; we'd normally say "lets
loose", "lets go" or "releases". In any case what was meant here was
that something got lost; a widget loses focus or a network loses its
connection.
Change-Id: Ic1fbe9e1f76185bcb7caf034d6be97ebfeb2e270
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Martin Smith <martin.smith@qt.io>
There is no visible cursor on iOS, so updating the image is a waste
of time. Removing this does in fact speed up rendering of the strokes.
Change-Id: If958fabeefd4273644707277d4a084855d415bb1
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
The function never returns nullptr, so return the matrix by value.
Change-Id: I7c1eeb43b9693866049763565b575348ddd35548
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Apart from being more efficient to construct and test, for the
expected very small number of entries, the example code itself shows
that a sorted vector is much more useful than an unordered set.
Change-Id: Ic5e38df0176ac4be08eac6a89c2e1cabab2a9020
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Found by GCC 7.
Change-Id: I90267617a038558e5b5213c598a949baf8d4d9be
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
It was backwards from the expected value, consistently on iOS and xcb.
It was already that way in 5.6, and we don't document which way
is clockwise. So it seems to be just the example which is wrong.
Change-Id: Ibbdadc2ae240017abc87439a2694fb5fbd3d07f8
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
Each stroke is a polygon (quadrilateral) connecting the previous
tablet event point to the current one. Previously we used the same
width for both ends of the stroke, so rapid changes in pressure caused
steps in the stroke width. Now it is tapered from one end to the other.
Change-Id: I909a2e85334a1a6e20fd28ee4babf6825da36612
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
They're deprecated since C++11 and removed in C++17.
Change-Id: Ia2acd9312707bfee96838743645a04ae1780e5dd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
With disabled gui module qmake in the directory examples/gui and
examples/widgets failes with:
Project ERROR: Could not find feature opengl.
Fix this by protecting 'qtConfig(opengl)' by 'qtHaveModule(gui)' as
already done in examples/examples.pro.
Task-number: QTBUG-60488
Change-Id: Ia842124e818e8c81d41d2b8e3b8905bf1dee58ce
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
QBackingStore should be able to handle a non-created QWindow just fine.
Change-Id: I42299aa0e985422e1fe4279c1385b9979d267a47
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
The documentation of QSyntaxHighlighter still uses the deprecated
QRegExp class. This patch updates the code samples as well as cleanup
some typos.
Change-Id: I87b525fddb560b7c5bb38f96d9aaceadb594f76c
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
- when appending to another string
- when just comparing
- when just calling toInt()
Change-Id: I6960784569b83bfd3e3640a8c04f2f909c293449
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
After applying the correction matrix the front face is CW, not CCW.
The examples work either way but fix them up to avoid reader confusion.
Change-Id: I491e6dc17c21897a59f36d32061e937f2b6c4c9d
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
If the respective modules aren't available we cannot build the tests
and examples. We drop the qtConfig(opengl) requirement for the opengl
examples as
a, we would need to make the QtGui configuration available for that to
work, and
b, we should not add too much detail to the tests and examples build
configurations. Checking each test and example for every feature it
uses would be too much.
Task-number: QTBUG-57255
Change-Id: Ifb043c81ec9e5c487765297bd65704812cd281fc
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
A convenience subclass of QWindow that provides a Vulkan-capable
window with a double-buffered FIFO swapchain.
While advanced use cases are better served by a custom QWindow
subclass, many applications can benefit from having a convenient
helper that makes getting started easier.
Add also three examples of increasing complexity, and a variant that
shows embeddeding into widgets via QWindowContainer.
[ChangeLog][QtGui] Added QVulkanWindow, a convenience subclass of
QWindow.
Task-number: QTBUG-55981
Change-Id: I6cdc9ff1390ac6258e278377233fd369a0bfeddc
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
Does not make much sense now that we can connect to lambda functions
[ChangeLog][QtCore][QSignalMapper] QSignalMapper is now marked
as deprecated.
Change-Id: I89135f23fdf16b42142a125eb7c9a86084c90bfc
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
This patch fixes the example that contained problems showing up
with mesa/nouveau drivers.
Change-Id: Ic90f6028e394138781f00bcc00c145c56134f441
Reviewed-by: Gunnar Sletta <gunnar@crimson.no>
Update the treemodelcompleter example to use the new QRegularExpression
class in place of the deprecated QRegExp.
Change-Id: I9fa91ca6e847603de37019e4ca86fc69a51a3772
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
The example creates a view on the heap but doesn't delete it on
application end. This patch uses a QScopedPointer to fix that.
Change-Id: I3b0c8589999d243c193bd02e1470c03eabfabe40
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
We should not check for platforms, but rather for features. Also, if
dbus is available it doesn't automatically mean that QProcess is.
Change-Id: I27ef5863fcb107cca1aa47abba95b734962adc33
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
For examples and documentation, use new BSD license text that
includes the commercial licenses.
Change-Id: I1cd74bd8e9c8f2746d8702df00780ee100cbebac
Reviewed-by: Jani Heikkinen <jani.heikkinen@qt.io>
...in order to support sRGB framebuffers.
Add a --srgb option to the qopenglwidget example to allow testing.
[ChangeLog][QtWidgets][QOpenGLWidget] Added support for specifying
custom internal texture formats in QOpenGLWidget in order to make it
possible to have the widget backed by an sRGB-capable framebuffer.
Task-number: QTBUG-50987
Change-Id: I112e2f0ab0b1478c69e601031aa0bafaa87fa847
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
Using std::atan2 gets the right answer directly from dy and dx,
without having to fix up quadrant as we needed to with acos (albeit we
have to negate dy in some cases, to match prior sense of angles). In
the process, it avoids explicit division, which would be an error when
the line's length is zero.
Change-Id: Ia2923159d38834e08e6f15cbff6766ed419fa804
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
This adds the tabletTracking property in the same way that mouseTracking already
existed: there is a WA_TabletTracking attribute, and a TabletTrackingChange event
to notify when it changes. So for widget applications it's an opt-in feature.
QtQuick applications don't yet make use of tablet events, but when they do
in the future, we don't yet have a mechanism to turn the move events off;
it remains to be seen whether that will be necessary.
[ChangeLog][QtWidget] QWidget now has a tabletTracking property, analogous
to mouseTracking, which will enable TabletMove events while the stylus is
hovering, even if no button is pressed. This allows applications to show
feedback based on the other tablet event properties such as rotation and tilt.
Task-number: QTBUG-26116
Change-Id: Ie96e8acad882b167e967796cdd17f1ad747a2771
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
don't attempt to hand-craft a library export any more. instead, use the
configure system's built-in mechanism, and refer to it via QMAKE_USE.
this also allows us to rely on transitive dependencies in the autotest.
as a side effect, this makes the openssl-linked feature imply the
openssl one.
Change-Id: I5dd209b63bc8fbbc62852f6ffc472d4452ea2e68
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
- Use Qt 5 connect syntax.
- Streamline code, remove unused members.
- Add a context menu for copying and opening the URLs.
- Add const to XML code.
- In the XML code, show the use of QStringLiteral in static inline
functions to create strings versus QLatin1String in comparison
overloads to avoid allocating strings from const char * literals.
Change-Id: Ib5e62ca188e271ffe01996dff3c9ea8e0b60739a
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
Update the flightinfo example to use the new QRegularExpression class
in place of the deprecated QRegExp.
Change-Id: I2395b37170565e922500e675210c400e90ae0f73
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
Update the legacy grabber example to use the new QRegularExpression
class in place of the deprecated QRegExp.
Change-Id: I1d1871b7e82cdb214fdd8ad55a606d5e7682fab1
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
