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-rw-r--r--src/kernel/qpaintdevice_x11.cpp15
1 files changed, 10 insertions, 5 deletions
diff --git a/src/kernel/qpaintdevice_x11.cpp b/src/kernel/qpaintdevice_x11.cpp
index a755c01..5941657 100644
--- a/src/kernel/qpaintdevice_x11.cpp
+++ b/src/kernel/qpaintdevice_x11.cpp
@@ -529,11 +529,16 @@ static void create_dpis()
Q_CHECK_PTR( dpisX );
Q_CHECK_PTR( dpisY );
for ( i = 0; i < screens; i++ ) {
- dpisX[ i ] = (DisplayWidth(dpy,i) * 254 + DisplayWidthMM(dpy,i)*5)
-
- / (DisplayWidthMM(dpy,i)*10);
- dpisY[ i ] = (DisplayHeight(dpy,i) * 254 + DisplayHeightMM(dpy,i)*5)
- / (DisplayHeightMM(dpy,i)*10);
+ if (DisplayWidthMM(dpy,i) < 1)
+ dpisX[ i ] = 75; // default the dpi to 75.
+ else
+ dpisX[ i ] = (DisplayWidth(dpy,i) * 254 + DisplayWidthMM(dpy,i)*5)
+ / (DisplayWidthMM(dpy,i)*10);
+ if (DisplayHeightMM(dpy,i) < 1)
+ dpisY[ i ] = 75; // default the dpi to 75.
+ else
+ dpisY[ i ] = (DisplayHeight(dpy,i) * 254 + DisplayHeightMM(dpy,i)*5)
+ / (DisplayHeightMM(dpy,i)*10);
}
}