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| author | pspjuth <peter.spjuth@gmail.com> | 2017-01-25 22:08:59 (GMT) |
|---|---|---|
| committer | pspjuth <peter.spjuth@gmail.com> | 2017-01-25 22:08:59 (GMT) |
| commit | bc6a00f386a42a918f7ea3907a7899419680c3d4 (patch) | |
| tree | a406cd822ff589ac563a528c8dcb1da18bf60dde /win/tkWinFont.c | |
| parent | 04dad740091d27ad1d2aa62d7256ba321d875cf4 (diff) | |
| parent | 66e41a71e3b7254f83641c7a1d512bfa94c45d40 (diff) | |
| download | tk-bc6a00f386a42a918f7ea3907a7899419680c3d4.zip tk-bc6a00f386a42a918f7ea3907a7899419680c3d4.tar.gz tk-bc6a00f386a42a918f7ea3907a7899419680c3d4.tar.bz2 | |
Fix [140ea8ab38]: Long text lines are not drawn on Windows.
Diffstat (limited to 'win/tkWinFont.c')
| -rw-r--r-- | win/tkWinFont.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/win/tkWinFont.c b/win/tkWinFont.c index ea8a7a2..f342f7c 100644 --- a/win/tkWinFont.c +++ b/win/tkWinFont.c @@ -1455,7 +1455,15 @@ MultiFontTextOut( for (p = source; p < end; ) { next = p + TkUtfToUniChar(p, &ch); thisSubFontPtr = FindSubFontForChar(fontPtr, ch, &lastSubFontPtr); - if (thisSubFontPtr != lastSubFontPtr) { + + /* + * The drawing API has a limit of 32767 pixels in one go. + * To avoid spending time on a rare case we do not measure each char, + * instead we limit to drawing chunks of 200 bytes since that works + * well in practice. + */ + + if ((thisSubFontPtr != lastSubFontPtr) || (p-source > 200)) { if (p > source) { familyPtr = lastSubFontPtr->familyPtr; Tcl_UtfToExternalDString(familyPtr->encoding, source, |