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>
[ChangeLog][qmake] A new feature "cmdline" was added that implies
"CONFIG += console" and "CONFIG -= app_bundle".
Task-number: QTBUG-27079
Change-Id: I6e52b07c9341c904bb1424fc717057432f9360e1
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Add several new tests to verify that Qt behaves properly when
high-DPI scaling is enabled. Add a generic framework for
manual tests for good measure. This could be refactored and
used for other manual tests later.
Includes tests written by Morten and Friedemann.
Task-number: QTBUG-46615
Change-Id: Ib6762ec1454711e71f0c094b19015932b99e8d6d
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Compile on Windows, add command line options to activate the
various tests.
Task-number: QTBUG-38858
Change-Id: I38c6a9a6711831b2bd8b6ea051dd19615cc911a1
Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>
Bring Qt 5 on par with Qt 4, prepare for more comprehensive
support later on.
Introduce device independent pixels (dips), device pixels,
and devicePixelRatio. Add high-dpi support to QPainter,
QGLWidget, the cocoa platform plugin, mac and fusion styles.
Dips are similar to CSS pixels, Apple points and
Android density-independent pixels. Device pixels
are pixels in the backing store/physical pixels on screen.
devicePixelRatio is the ratio between them, which is
1.0 on standard displays and 2.0 on "retina" displays.
New API:
QImage::devicePixelRatio() and setDevicePixelRatio()
QPixmap::devicePixelRatio() and setDevicePixelRatio()
QWindow::devicePixelRatio()
QScreen::devicePixelRatio()
QGuiApplicaiton::devicePixelRatio()
Change-Id: If98c3ca9bfdf0e1bdbcf7574cd5b912c9ff63856
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
