[Gdiplus 1/6] Improve accuracy in calculating point sizes (try 2)
Adam Petaccia
adam at tpetaccia.com
Fri Jun 27 19:06:24 CDT 2008
Changelog: rename some constants to not tell lies
Subject: [Gdiplus 1/6] Improve accuracy in calculating point sizes
The previous version was wrong. Also rename a misnamed constant.
---
dlls/gdiplus/font.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/dlls/gdiplus/font.c b/dlls/gdiplus/font.c
index 86a3223..4ebc6ac 100644
--- a/dlls/gdiplus/font.c
+++ b/dlls/gdiplus/font.c
@@ -33,7 +33,8 @@ WINE_DEFAULT_DEBUG_CHANNEL (gdiplus);
#include "gdiplus.h"
#include "gdiplus_private.h"
-static const REAL mm_per_pixel = 25.4;
+static const REAL mm_per_inch = 25.4;
+static const REAL inch_per_point = 1.0/72.0;
static inline REAL get_dpi (void)
{
@@ -50,7 +51,7 @@ static inline REAL get_dpi (void)
static inline REAL point_to_pixel (REAL point)
{
- return point * 1.5;
+ return point * get_dpi() * inch_per_point;
}
static inline REAL inch_to_pixel (REAL inch)
@@ -65,7 +66,7 @@ static inline REAL document_to_pixel (REAL doc)
static inline REAL mm_to_pixel (REAL mm)
{
- return mm * (get_dpi() / mm_per_pixel);
+ return mm * (get_dpi() / mm_per_inch);
}
/*******************************************************************************
--
1.5.4.3
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