Dmitry Timoshkov : gdiplus: Improve precision of calculated pixel to units transformation.
Alexandre Julliard
julliard at winehq.org
Tue Jul 31 12:04:15 CDT 2012
Module: wine
Branch: master
Commit: 3298a3021150526f9e1fd3e030c05bf18ba3c048
URL: http://source.winehq.org/git/wine.git/?a=commit;h=3298a3021150526f9e1fd3e030c05bf18ba3c048
Author: Dmitry Timoshkov <dmitry at baikal.ru>
Date: Tue Jul 31 18:48:46 2012 +0900
gdiplus: Improve precision of calculated pixel to units transformation.
---
dlls/gdiplus/gdiplus.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/dlls/gdiplus/gdiplus.c b/dlls/gdiplus/gdiplus.c
index 9b43cd6..2599c58 100644
--- a/dlls/gdiplus/gdiplus.c
+++ b/dlls/gdiplus/gdiplus.c
@@ -36,7 +36,7 @@
WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
static const REAL mm_per_inch = 25.4;
-static const REAL inch_per_point = 1.0/72.0;
+static const REAL point_per_inch = 72.0;
static Status WINAPI NotificationHook(ULONG_PTR *token)
{
@@ -353,7 +353,7 @@ REAL units_to_pixels(REAL units, GpUnit unit, REAL dpi)
case UnitDisplay:
return units;
case UnitPoint:
- return units * dpi * inch_per_point;
+ return units * dpi / point_per_inch;
case UnitInch:
return units * dpi;
case UnitDocument:
@@ -376,7 +376,7 @@ REAL pixels_to_units(REAL pixels, GpUnit unit, REAL dpi)
case UnitDisplay:
return pixels;
case UnitPoint:
- return pixels / dpi / inch_per_point;
+ return pixels * point_per_inch / dpi;
case UnitInch:
return pixels / dpi;
break;
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