Replace by QT_ENABLE_HIGHDPI_SCALING.
QT_AUTO_SCREEN_SCALE_FACTOR has the usability problem that it mixes
enabling the high-DPI scaling mode with the method of getting screen
scale factors (“auto”). Due to this, it ends up with a slightly
strange name.
QT_ENABLE_HIGHDPI_SCALING matches the C++ option
(Qt::AA_EnableHighDPiScaling), and leaves the scale factor acquisition
method unspecified, possibly to be set by some other means (like
QT_SCREEN_SCALE_FACTORS).
Done-with: Friedemann Kleint <Friedemann.Kleint@qt.io>
Task-number: QTBUG-53022
Change-Id: I30033d91175a00db7837efc9c48c33396f5f0449
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Store name->factor associations in a global QHash instead of on the
QScreen object, making them survive QScreen object deletion, for
example on disconnect/ connect cycles.
Make factors set with QT_SCREEN_SCALE_FACTORS override the screen
factors computed from platform plugin DPI values. This matches the use
case for QT_SCREEN_SCALE_FACTORS (but not the general scale factors
combine by multiplication”principle)
Done-with: Friedemann Kleint <Friedemann.Kleint@qt.io>
Task-number: QTBUG-53022
Change-Id: I12771249314ab0c073e609d62f57ac0d18d3b6ce
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
This makes it possible to test the effects of setting
Qt::AA_HighDpiScaling/QT_AUTO_SCREEN_SCALE_FACTOR, with different DPI
values on all platforms.
This also makes it possible to access the actual DPI values reported
by the OS/WS via the QPlatformScreen API.
A drawback is that there is no single place to check the environment
variable; currently done in three places. This may be
further simplified later on.
Done-with: Friedemann Kleint <Friedemann.Kleint@qt.io>
Task-number: QTBUG-53022
Change-Id: Idd6463219d3ae58fe0ab72c17686cce2eb9dbadd
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Remove pixelScale() in favor of logicalBaseDpi(). Compute scale factor
based on logical DPI and logical base DPI, or optionally based on the
physical DPI.
Add policies for running the scale factor and adjusting the logical
DPI reported to the application. The policies are set via environment
variables:
QT_SCALE_FACTOR_ROUNDING_POLICY=Round|Ceil|Floor|RoundPreferFloor|PassThrough
QT_DPI_ADJUSTMENT_POLICY=AdjustDpi|DontAdjustDpi|AdjustUpOnly
QT_USE_PHYSICAL_DPI=0|1
Done-with: Friedemann Kleint <Friedemann.Kleint@qt.io>
Task-number: QTBUG-53022
Change-Id: I4846f223186df665eb0a9c827eaef0a96d1f458f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
The logical DPI reported to applications is the platform screen
logical DPI divided by the platform screen scale factor.
Use the screen in question when calculating the DPI instead of
the values from the main screen.
QHighDpiScaling::logicalDpi now takes a QScreen pointer.
Done-with: Friedemann Kleint <Friedemann.Kleint@qt.io>
Task-number: QTBUG-53022
Change-Id: I0f62b5878c37e3488e9a8cc48aef183ff822d0c4
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Commit b6ded193 added an unconditional dereference
of the platformScreen pointer, for calls where nativePostion
is non-nullptr.
Change-Id: I4a6fbbd0337f91d4fcb76c17b4dc60e1b9ad10ed
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Calls like
QHighDpi::fromNativePixels(point, window)
would return device independent coordinates outside any
screen in cases where the window is spanning multiple
screens and the native point was not on the main screen.
Correct this by looking up the correct screen and use
its scale factor and origin when scaling coordinates.
Task-number: QTBUG-73231
Change-Id: I01a3a42f42121b8d9f4ced2bb0fb023d6ae6bfe7
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
With Web Engine, QQuickWidget or similar, the code can hit on the offscreen
window, when its handle is null. Add a check.
Amends 3af7b27917.
Fixes: QTBUG-76440
Change-Id: I123633d18386efd3dbfb22aad6072e4f0877a62e
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Introduce origin(QWindow *), which returns the point
around which coordinates should be scaled: the screen
origin for top-level windows, and (0, 0) for child windows.
The code paths for top-level and child windows can
then be combined.
Change-Id: I6b9cdbd9e7c2d9406e9137e325c4eb5c79e3ac9a
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Make these functions handle the case where a window spans multiple
screens, and high-DPI scaling is enabled, and the local position (in the
window) is not on the window primary screen (as returned by
QWindow::screen()).
This is done by detecting the case, and then calculating
the correct position using the native coordinate system.
[ChangeLog][QtGui] QWindow::mapToGlobal()/mapFromGlobal() now handle
windows spanning screens correctly.
Done-with: Friedemann Kleint<Friedemann.Kleint@qt.io>
Task-number: QTBUG-73231
Change-Id: I3c31b741344d9e85e4f5d9e60bae75acce2db741
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Need to do the same for startsWith() and endsWith(). indexOf() is a lot
harder.
[ChangeLog][QtCore][QByteArray] Added compare(), which takes
Qt::CaseSensitivity as one of the parameters. This function is more
efficient than using toLower() or toUpper() and then comparing.
Change-Id: Ib48364abee9f464c96c6fffd152e69bde4194df7
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
Pixel density reported by the screen is sometimes not precise enough,
so recalculate it: divide px (physical pixels) by dp (device-independent pixels)
for both width and height, and then use the average if it is different
from the one initially reported by the screen
Task-number: QTBUG-62191
Change-Id: Ia2f485c7ce8849db6e7c1d2ac08f5e008aea2ff8
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
KDE will set the screen scale factors to 1 by default. Make sure
we don't turn off font hinting in that case.
Task-number: QTBUG-56797
Change-Id: Ieab18a7cfe4c1cb7087caab4d881932a4a991bc8
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
5971b88e is not needed in new configure.
This merge also reverts "fix QMAKE_DEFAULT_*DIRS resolution with
apple SDK", 2c9d15d7, because it breaks iOS build with new
configure system.
Conflicts:
mkspecs/features/default_pre.prf
mkspecs/features/mac/toolchain.prf
mkspecs/features/toolchain.prf
src/dbus/qdbusconnection.cpp
src/plugins/sqldrivers/mysql/qsql_mysql.cpp
src/sql/drivers/mysql/qsql_mysql.cpp
src/widgets/widgets/qmenubar.cpp
src/widgets/widgets/qmenubar_p.h
tools/configure/configureapp.cpp
tools/configure/environment.cpp
tools/configure/environment.h
Change-Id: I995533dd334211ebd25912db05b639d6f908aaec
As of version 10.12 (Sierra), the name of Apple's desktop operating
system will be macOS. Change the occurrences where the Mac platform
is discussed to use a macro \macos, which expands to 'macOS'. This
helps with adapting to future renaming.
Update the instructions on mac-specific Q_OS_* macro usage.
Add a \target for the old 'Qt for OS X' topic to keep links working
for other documentation modules that try to link with the old name.
Change-Id: Id33fb0cd985df702a4ae4efb4c5fd428e77d9b85
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
The printf-style version of QDebug expands to a lot less code than the
std::ostream-style version. Of course, you pay in type safety (but
compilers warn about it these days), you cannot stream complex Qt
types and streaming QStrings is awkward, but in many cases you
actually improve on readability.
But the main reason is that something that's not supposed to be
executed under normal operation has no business bloating executable
code size.
This is not an attempt at converting all qWarnings() to printf-style,
only the low-hanging fruit.
In this second part, replace
qWarning() << "" << non-QString
with
qWarning("..%.", non-QString).
QString (and QUrl etc) have special escaping handling when streamed
into QDebug, so leave those alone. They also seem to expand to less
code than the qPrintable() alternative, so there's no reason to
replace them.
Saves 2KiB, 3.4KiB, ~750b and ~450b in text size in QtCore, Gui,
Network and Widgets, resp., on optimized GCC 5.3 AMD64 builds.
Change-Id: Iae6823e543544347e628ca1060d6d51e3b04d3f4
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
... by replacing them with C++11 range-for loops.
This is the simplest of the patch series: Q_FOREACH took a
copy, so we do, too. Except we don't, since we're just
catching the return value that comes out of the function
(RVO). We can't feed the rvalues into range-for, because
they are non-const and would thus detach.
Change-Id: I457942159015ff153bdfc6d5f031a3f0a0f6e9ac
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
From Qt 5.7 -> LGPL v2.1 isn't an option anymore, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new LGPL header instead of LGPL21 one
(in those files which will be under LGPL v3)
Change-Id: I046ec3e47b1876cd7b4b0353a576b352e3a946d9
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
This information is already registered by the QMessageLogger ctor.
Where, by dropping the << Q_FUNC_INFO in ostream-style qDebug(), only
a string literal remained, converted to printf-style qDebug() on the
go.
Change-Id: I3f261c98fd7bcfa1fead381a75a82713bb75e6f3
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Make it possible to enable and disable both at the
environment variable level and at the source code
level. This applies to scaling done by Qt using display
density information provided by the operating system.
Disabling is done with a 'veto' system: both the environment
and source code my prevent the other for enabling
scaling. This covers use cases of 'my system does not
provide correct display metrics' and 'my application
needs access to display pixels', respectively.
On the environment, scaling is now enabled with
QT_AUTO_SCREEN_SCALE_FACTOR=1 and disabled with
QT_AUTO_SCREEN_SCALE_FACTOR=0. In source code the
corresponding application attributes are AA_EnableHighDpiScaling
and AA_DisapleHighDpiScaling. Not setting any of these
indicates 'no preference'.
The global scale factor set by QT_SCALE_FACTOR is
not affected by any if the disablers.
Task-number: QTBUG-46615
Change-Id: If18607d4b56ace1914a710e5aa60b2f0968e0010
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Reviewed-by: Paul Olav Tvete <paul.tvete@theqtcompany.com>
For people with non-empty QT_MESSAGE_PATTERNS, the multiple lines would
be unreadable.
This is what it showed for me when starting Qt Creator:
[1442136.587] qtcreator(82762 82762)(?libQt5Gui.so.5?|QGuiApplicationPrivate::createPlatformIntegration|QGuiApplicationPrivate::createEventDispatcher|QCoreApplication::init|QCoreApplication::QCoreApplication|QGuiApplication::QGuiApplication|QApplication::QApplication|?qtcreator?|?qtcreator?|__libc_start_main):
Warning: QT_DEVICE_PIXEL_RATIO is deprecated. Instead use:
[1442136.592] qtcreator(82762 82762)(?libQt5Gui.so.5?|QGuiApplicationPrivate::createPlatformIntegration|QGuiApplicationPrivate::createEventDispatcher|QCoreApplication::init|QCoreApplication::QCoreApplication|QGuiApplication::QGuiApplication|QApplication::QApplication|?qtcreator?|?qtcreator?|__libc_start_main):
QT_AUTO_SCREEN_SCALE_FACTOR to enable platform plugin controlled per-screen factors.
[1442136.592] qtcreator(82762 82762)(?libQt5Gui.so.5?|QGuiApplicationPrivate::createPlatformIntegration|QGuiApplicationPrivate::createEventDispatcher|QCoreApplication::init|QCoreApplication::QCoreApplication|QGuiApplication::QGuiApplication|QApplication::QApplication|?qtcreator?|?qtcreator?|__libc_start_main):
QT_SCREEN_SCALE_FACTORS to set per-screen factors.
[1442136.593] qtcreator(82762 82762)(?libQt5Gui.so.5?|QGuiApplicationPrivate::createPlatformIntegration|QGuiApplicationPrivate::createEventDispatcher|QCoreApplication::init|QCoreApplication::QCoreApplication|QGuiApplication::QGuiApplication|QApplication::QApplication|?qtcreator?|?qtcreator?|__libc_start_main):
QT_SCALE_FACTOR to set the application global scale factor.
(and imagine it line-broken in a terminal 140 columns wide)
Change-Id: I42e7ef1a481840699a8dffff1406f73dc4d44a41
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Even if QHighDpiScaling::isActive() returns false, there
is a small overhead from calling functions and multiplying
with 1.0. This change adds a QT_NO_HIGHDPISCALING #ifdef
that replaces all conversion functions with empty inline
functions.
Task-number: QTBUG-46615
Change-Id: Idf85e1700e3adf7f7174c6fa3f5e1d006d74c826
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>
Add a coordinate scaling layer to QtGui, which supports 'devicePixelRatio'
type high-dpi on all platforms, in production and also for
development and testing purposes.
High-DPI scaling is opt-in, by setting environment variables:
QT_SCALE_FACTOR - sets a global scale factor
QT_AUTO_SCREEN_SCALE_FACTOR - sets per-screen scale factors,
where the scale factors are provided by the platform plugin.
This QtGui scaling can be used instead of or in addition to scaling
done by the window system. This distinction is not visible to
applications [when they use Qt API], which will see a change in
the value returned by the devicePixelRatio() accessors as usual.
Introduce a new (private to Qt) coordinate system: native pixels.
The coordinate system stack now looks like:
device-independent pixels (app, upper parts of Qt)
native pixels (lower parts of Qt Gui, platform plugins)
device pixels (backing stores and OpenGL)
Add private QHighDpi namespace with scaling functions that convert
between device-independent pixels and native pixels:
T toNativePixels(T, QWindow *);
T fromNativePixels(T, QWindow *);
Add scaling calls the QWindow (and friends) cross-platform implementation,
around the calls to QPlatformWindow functions. QPlatformWindow now uses
native coordinates - platform code remains largely unchanged since native
coordinates are window system coordinates.
QWindow now uses (possibly) scaled coordinates. This means that
platform plugins no longer can rely on QWindow::geometry() and
related functions. QPlatformWindow::windowGeometry() and other
convenience functions have been added for use when the platform
plugin needs to convert scaled geometry to native geometry.
Add Qt::AA_NoHighDpiScaling, which can be use to disable any
scaling in QtGui, effectively ignoring the environment variables.
(Note that this does not disable any scaling done by the window
system.)
Contributions from Friedemann and Paul.
Task-number: QTBUG-46615
Change-Id: I673bbd69c130e73b13cce83be11bfb28f580bf60
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Morten Johan Sørvig
Friedemann Kleint
Morten Johan Sørvig
Rolf Eike Beer
Thiago Macieira
Lars Knoll
Victor-Andrei Variu
Tor Arne Vestbø
Liang Qi
Paul Olav Tvete
Frederik Gladhorn
Topi Reinio
Marc Mutz
Jani Heikkinen
Shawn Rutledge
Morten Johan Sørvig
Paul Olav Tvete