[Libreoffice-commits] core.git: vcl/qt5 vcl/unx

[Jan-Marek Glogowski (via logerrit)]

 vcl/qt5/Qt5Graphics_GDI.cxx      |    4 ++--
 vcl/qt5/Qt5Instance.cxx          |    2 ++
 vcl/unx/kde5/KDE5SalGraphics.cxx |    4 ++--
 vcl/unx/kde5/KDE5SalInstance.cxx |    2 ++
 4 files changed, 8 insertions(+), 4 deletions(-)

New commits:
commit b4698a2241ec26d796c66da3a814f7cc693785b6
Author:     Jan-Marek Glogowski <glogow at fbihome.de>
AuthorDate: Fri Mar 29 02:58:59 2019 +0100
Commit:     Jan-Marek Glogowski <glogow at fbihome.de>
CommitDate: Sat Mar 30 00:51:02 2019 +0100

    tdf#124292 Qt5 / KDE5 disable Qt's HiDPI scaling
    
    LO does its own layouting and also all the scaling, so disable
    the automatic HiDPI scaling explicitly. Otherwise fonts will be
    rendered in LoDPI and just scaled as an image, if UI scaling is
    enabled in KDE, resulting in really blocky / ugly fonts.
    
    Change-Id: I38503ce27c1671e80d0749d21c6c6dcff1a808a6
    Reviewed-on: https://gerrit.libreoffice.org/69941
    Tested-by: Jenkins
    Reviewed-by: Jan-Marek Glogowski <glogow at fbihome.de>

diff --git a/vcl/qt5/Qt5Graphics_GDI.cxx b/vcl/qt5/Qt5Graphics_GDI.cxx
index e38a10d4fb90..d5186f0d583b 100644
--- a/vcl/qt5/Qt5Graphics_GDI.cxx
+++ b/vcl/qt5/Qt5Graphics_GDI.cxx
@@ -643,8 +643,8 @@ void Qt5Graphics::GetResolution(sal_Int32& rDPIX, sal_Int32& rDPIY)
         return;
 
     QScreen* pScreen = m_pFrame->GetQWidget()->window()->windowHandle()->screen();
-    rDPIX = pScreen->logicalDotsPerInchX();
-    rDPIY = pScreen->logicalDotsPerInchY();
+    rDPIX = pScreen->logicalDotsPerInchX() * pScreen->devicePixelRatio() + 0.5;
+    rDPIY = pScreen->logicalDotsPerInchY() * pScreen->devicePixelRatio() + 0.5;
 }
 
 sal_uInt16 Qt5Graphics::GetBitCount() const { return getFormatBits(m_pQImage->format()); }
diff --git a/vcl/qt5/Qt5Instance.cxx b/vcl/qt5/Qt5Instance.cxx
index 429b69f90b79..f0d42666e3ce 100644
--- a/vcl/qt5/Qt5Instance.cxx
+++ b/vcl/qt5/Qt5Instance.cxx
@@ -495,6 +495,8 @@ VCLPLUG_QT5_PUBLIC SalInstance* create_SalInstance()
         unsetenv("SESSION_MANAGER");
     }
 
+    QApplication::setAttribute(Qt::AA_DisableHighDpiScaling);
+
     int* pFakeArgc = new int;
     *pFakeArgc = nFakeArgc;
     pQApplication = new QApplication(*pFakeArgc, pFakeArgv);
diff --git a/vcl/unx/kde5/KDE5SalGraphics.cxx b/vcl/unx/kde5/KDE5SalGraphics.cxx
index 290127d0526e..0b4b4283f0da 100644
--- a/vcl/unx/kde5/KDE5SalGraphics.cxx
+++ b/vcl/unx/kde5/KDE5SalGraphics.cxx
@@ -78,8 +78,8 @@ void KDE5SalGraphics::GetResolution(sal_Int32& rDPIX, sal_Int32& rDPIY)
         return;
 
     QScreen* pScreen = m_pFrame->GetQWidget()->window()->windowHandle()->screen();
-    rDPIX = pScreen->logicalDotsPerInchX();
-    rDPIY = pScreen->logicalDotsPerInchY();
+    rDPIX = pScreen->logicalDotsPerInchX() * pScreen->devicePixelRatio() + 0.5;
+    rDPIY = pScreen->logicalDotsPerInchY() * pScreen->devicePixelRatio() + 0.5;
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/unx/kde5/KDE5SalInstance.cxx b/vcl/unx/kde5/KDE5SalInstance.cxx
index 6bca4d88a90c..d746d53beace 100644
--- a/vcl/unx/kde5/KDE5SalInstance.cxx
+++ b/vcl/unx/kde5/KDE5SalInstance.cxx
@@ -140,6 +140,8 @@ VCLPLUG_KDE5_PUBLIC SalInstance* create_SalInstance()
         unsetenv("SESSION_MANAGER");
     }
 
+    QApplication::setAttribute(Qt::AA_DisableHighDpiScaling);
+
     int* pFakeArgc = new int;
     *pFakeArgc = nFakeArgc;
     pQApplication = new QApplication(*pFakeArgc, pFakeArgv);