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app/internal/window: don't second guess UI scale

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Before this change, Gio tries hard to come up with a reasonable UI scale
factor on desktop OSes derived from the physical dimensions and
resolution of connected monitors. Gio also attempts to detect the user
specified system UI scale and apply it.

However, all that is complex and misguided:

- The UI scale should not depend on whatever monitor is connected at
program startup - For multiple monitors, it's unclear which one to base
the scale off.  - Applying both a monitor derived scale *and* the user
specified scale is wrong, because the user scale is relative to some
fixed scale, not Gio's derived scale.  - With an automatic scale, Gio
does not respect user preference and will not have a similar scale to
other programs on the desktop.

Get rid of the the automatic UI scale detection and rely only on the
user scale.

Updates gio#53

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2019-11-04 12:32:06 +01:00
parent 65146a5337
commit 396a538afe
7 changed files with 38 additions and 92 deletions
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app/internal/window/os_macos.h
-2
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@@ -12,8 +12,6 @@ __attribute__ ((visibility ("hidden"))) CGFloat gio_viewWidth(CFTypeRef viewRef)
__attribute__ ((visibility ("hidden"))) CGFloat gio_viewHeight(CFTypeRef viewRef);
__attribute__ ((visibility ("hidden"))) void gio_setAnimating(CFTypeRef viewRef, BOOL anim);
__attribute__ ((visibility ("hidden"))) void gio_updateDisplayLink(CFTypeRef viewRef, CGDirectDisplayID dispID);
__attribute__ ((visibility ("hidden"))) CGFloat gio_getPixelsPerDP(void);
__attribute__ ((visibility ("hidden"))) CGFloat gio_getBackingScale(void);
__attribute__ ((visibility ("hidden"))) CGFloat gio_getViewBackingScale(CFTypeRef viewRef);
#endif