Commit Graph

2 Commits

Author SHA1 Message Date
Morten Johan Sørvig
eb5d8d2fc3 Update the high-dpi manual test.
- Organize the test images into different sizes.
- Add a button and icon drawing test.
- Don't show all tests by default.

Change-Id: I95eff846b8c5159085f53b413dea7212c1ea5071
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
2013-03-29 09:47:32 +01:00
Morten Johan Sørvig
5e61bbe586 Basic high-dpi "retina" support for Qt 5.
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>
2012-12-01 08:33:20 +01:00