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Adjust 'really large' sizes.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@17186 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Alexander Malmberg 2003-07-11 01:38:39 +00:00
parent de241312ea
commit 7d44f67c49
3 changed files with 19 additions and 5 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2003-07-10 03:37 Alexander Malmberg <alexander@malmberg.org>
* Source/NSStringDrawing.m, Source/NSTextView.m: Adjust "really large"
sizes to ensure accuracy to a whole point.
2003-07-10 Benhur Stein <benhur@inf.ufsm.br>
* Source/NSSavePanel.m: added new private method

16
Source/NSStringDrawing.m
View file

@ -49,6 +49,14 @@ This might be a common case if lots of calls to -size... and -draw...
are paired.
*/
#define LARGE_SIZE 8e6
/*
8e6 is not as arbitrary as it seems. 8e6 is chosen because it's close to
1<<23-1, the largest number that can be stored in a 32-bit float with an
ulp of 0.5, which means things should round to the correct whole point.
*/
static NSTextStorage *textStorage;
static NSLayoutManager *layoutManager;
static NSTextContainer *textContainer;
@ -92,7 +100,7 @@ glyphs to be drawn upside-down, so we need to tell NSFont to flip the fonts.
[textStorage replaceCharactersInRange: NSMakeRange(0, [textStorage length])
withString: @""];
[textContainer setContainerSize: NSMakeSize(1e8, 1e8)];
[textContainer setContainerSize: NSMakeSize(LARGE_SIZE, LARGE_SIZE)];
if (ctm->matrix.m11 != 1.0 || ctm->matrix.m12 != 0.0 ||
ctm->matrix.m21 != 0.0 || fabs(ctm->matrix.m22) != 1.0)
@ -153,11 +161,11 @@ glyphs to be drawn upside-down, so we need to tell NSFont to flip the fonts.
withString: @""];
/*
TODO: Use rect.size.heigth instead of 1e8? Should make things faster,
TODO: Use rect.size.heigth instead of LARGE_SIZE? Should make things faster,
since we'll only typeset what fits, but lines that used to fit partially
won't fit at all.
*/
[textContainer setContainerSize: NSMakeSize(rect.size.width, 1e8)];
[textContainer setContainerSize: NSMakeSize(rect.size.width, LARGE_SIZE)];
if (ctm->matrix.m11 != 1.0 || ctm->matrix.m12 != 0.0 ||
ctm->matrix.m21 != 0.0 || fabs(ctm->matrix.m22) != 1.0)
@ -234,7 +242,7 @@ glyphs to be drawn upside-down, so we need to tell NSFont to flip the fonts.
[textStorage replaceCharactersInRange: NSMakeRange(0, [textStorage length])
withString: @""];
[textContainer setContainerSize: NSMakeSize(1e8, 1e8)];
[textContainer setContainerSize: NSMakeSize(LARGE_SIZE, LARGE_SIZE)];
[layoutManager setUsesScreenFonts: YES];
[textStorage replaceCharactersInRange: NSMakeRange(0, 0)

3
Source/NSTextView.m
View file

@ -137,7 +137,8 @@ static BOOL noLayoutManagerException(void)
/* The shared notification center */
static NSNotificationCenter *notificationCenter;
/* Default max. size. */
/* Default max. size. Don't change this without understanding and checking
for roundoff issues. Whole points should be representable. */
#define HUGE 1e7