Revision: 13122
http://sourceforge.net/p/skim-app/code/13122
Author: hofman
Date: 2022-10-23 21:56:24 +0000 (Sun, 23 Oct 2022)
Log Message:
-----------
calculate magnified rect first rather than transform every corner point
Modified Paths:
--------------
trunk/SKPDFView.m
Modified: trunk/SKPDFView.m
===================================================================
--- trunk/SKPDFView.m 2022-10-23 14:57:20 UTC (rev 13121)
+++ trunk/SKPDFView.m 2022-10-23 21:56:24 UTC (rev 13122)
@@ -4868,17 +4868,13 @@
}
NSImage *image;
- NSRange pageRange;
NSAffineTransform *transform = [NSAffineTransform transform];
NSImageInterpolation interpolation = [[NSUserDefaults
standardUserDefaults] integerForKey:SKInterpolationQualityKey] + 1;
+ NSRect scaledRect = SKRectFromCenterAndSize(mouseLoc,
NSMakeSize(NSWidth(magRect) / magnification, NSHeight(magRect) /
magnification));
+ NSRange pageRange;
+ pageRange.location = MIN([[self
pageForPoint:SKTopLeftPoint(scaledRect) nearest:YES] pageIndex], [[self
pageForPoint:SKTopRightPoint(scaledRect) nearest:YES] pageIndex]);
+ pageRange.length = MAX([[self
pageForPoint:SKBottomLeftPoint(scaledRect) nearest:YES] pageIndex], [[self
pageForPoint:SKBottomRightPoint(scaledRect) nearest:YES] pageIndex]) + 1 -
pageRange.location;
- [transform translateXBy:mouseLoc.x yBy:mouseLoc.y];
- [transform scaleBy:1.0 / magnification];
- [transform translateXBy:-mouseLoc.x yBy:-mouseLoc.y];
- pageRange.location = MIN([[self pageForPoint:[transform
transformPoint:SKTopLeftPoint(magRect)] nearest:YES] pageIndex], [[self
pageForPoint:[transform transformPoint:SKTopRightPoint(magRect)] nearest:YES]
pageIndex]);
- pageRange.length = MAX([[self pageForPoint:[transform
transformPoint:SKBottomLeftPoint(magRect)] nearest:YES] pageIndex], [[self
pageForPoint:[transform transformPoint:SKBottomRightPoint(magRect)]
nearest:YES] pageIndex]) + 1 - pageRange.location;
-
- transform = [NSAffineTransform transform];
[transform translateXBy:mouseLoc.x - NSMinX(magRect) yBy:mouseLoc.y -
NSMinY(magRect)];
[transform scaleBy:magnification];
[transform translateXBy:-mouseLoc.x yBy:-mouseLoc.y];
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