diff options
Diffstat (limited to 'generic/tkTextIndex.c')
| -rw-r--r-- | generic/tkTextIndex.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/generic/tkTextIndex.c b/generic/tkTextIndex.c index 41702f1..44deddd 100644 --- a/generic/tkTextIndex.c +++ b/generic/tkTextIndex.c @@ -10,7 +10,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkTextIndex.c,v 1.17 2004/02/28 16:04:43 vincentdarley Exp $ + * RCS: @(#) $Id: tkTextIndex.c,v 1.18 2004/06/04 10:51:18 vincentdarley Exp $ */ #include "default.h" @@ -286,6 +286,10 @@ TkTextNewIndexObj(textPtr, indexPtr) * * Given a pixel index and a byte index, look things up in the B-tree * and fill in a TkTextIndex structure. + * + * The valid input range for pixelIndex is from 0 to the number + * of pixels in the widget-1. Anything outside that range will + * be rounded to the closest acceptable value. * * Results: * @@ -321,6 +325,10 @@ TkTextMakePixelIndex(textPtr, pixelIndex, indexPtr) } indexPtr->linePtr = TkBTreeFindPixelLine(textPtr->tree, pixelIndex, &pixelOffset); + /* + * 'pixedlIndex' was too large, so we try again, just to find + * the last pixel in the window + */ if (indexPtr->linePtr == NULL) { indexPtr->linePtr = TkBTreeFindPixelLine(textPtr->tree, TkBTreeNumPixels(textPtr->tree)-1, &pixelOffset); |