anne/lyx_mirror
1
0
Fork 0
mirror of https://git.lyx.org/repos/lyx.git synced 2024-09-19 22:40:26 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Improve HiDpi handling

Browse Source 
Add code stolen from QBitTorrent that enables properly HiDpi handling.

HighDpi support is set by default starting with Qt 5.6.

Support for fractional scaling is added for Qt >= 5.14.

Hopefully fixes bug #12060.
This commit is contained in:
Jean-Marc Lasgouttes 2021-02-25 17:56:11 +01:00
parent 0274bf63f7
commit d7a4f47e7d
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/frontends/qt/GuiApplication.cpp
View File

@ -63,6 +63,7 @@
#include "support/convert.h"
#include "support/debug.h"
#include "support/ExceptionMessage.h"
#include "support/environment.h"
#include "support/FileName.h"
#include "support/filetools.h"
#include "support/ForkedCalls.h"
@ -180,6 +181,19 @@ frontend::Application * createApplication(int & argc, char * argv[])
AllowSetForegroundWindow(ASFW_ANY);
#endif
#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
// Attribute Qt::AA_EnableHighDpiScaling must be set before QCoreApplication is created
if (getEnv("QT_ENABLE_HIGHDPI_SCALING").empty()
&& getEnv("QT_AUTO_SCREEN_SCALE_FACTOR").empty())
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);
#endif
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
// HighDPI scale factor policy must be set before QGuiApplication is created
if (getEnv("QT_SCALE_FACTOR_ROUNDING_POLICY").empty())
QApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
#endif
frontend::GuiApplication * guiApp = new frontend::GuiApplication(argc, argv);
// I'd rather do that in the constructor, but I do not think that
// the palette is accessible there.