In an attempt to give layout tests consistent results across platforms, I ofter
use the Ahem font. However, I’ve noticed that Qt still requires
platform-specific results when I do that. One recent example is
fast/dynamic/unicode-bidi.html
$ diff -u LayoutTests/platform/qt/fast/dynamic/unicode-bidi-expected.txt
LayoutTests/fast/dynamic/unicode-bidi-expected.txt
--- LayoutTests/platform/qt/fast/dynamic/unicode-bidi-expected.txt
2011-02-03 09:02:59.000000000 -0800
+++ LayoutTests/fast/dynamic/unicode-bidi-expected.txt 2011-01-28
10:46:32.000000000 -0800
@@ -3,14 +3,14 @@
layer at (0,0) size 800x600 layerType: background only
layer at (8,8) size 100x50
RenderBlock (positioned) zI: -1 {DIV} at (8,8) size 100x50 [color=#FF0000]
- RenderInline {SPAN} at (0,0) size 50x49 [color=#008000]
- RenderText {#text} at (0,0) size 50x49
+ RenderInline {SPAN} at (0,0) size 50x50 [color=#008000]
+ RenderText {#text} at (0,0) size 50x50
text run at (0,0) width 50: "x"
- RenderText zI: -1 {#text} at (50,0) size 50x49
+ RenderText zI: -1 {#text} at (50,0) size 50x50
text run at (50,0) width 50: "x"
layer at (0,0) size 800x600 layerType: foreground only
RenderBlock {HTML} at (0,0) size 800x600
RenderBody {BODY} at (8,8) size 784x584
RenderBlock {DIV} at (0,0) size 784x50 [color=#008000]
- RenderText {#text} at (0,0) size 100x49
+ RenderText {#text} at (0,0) size 100x50
text run at (0,0) width 100 RTL override: "xp"
Here, all the 50px Ahem text has a height of 49 pixels on Qt. The pixel
results, though, show it having the same height it does in Mac OS X (and
presumably other platforms).
What is causing this difference? How does it affect other fonts and real
websites? Is there a way to fix this?
Thanks,
—Dan_______________________________________________
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