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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commitce4a32fe52ef09d8f5ff1dd22c001110902b60a2 (patch)
tree5ac38a06f3dde268dc7927dc155896926aaf7012 /khtml/rendering/break_lines.h
downloadtdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.tar.gz
tdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+#ifndef BREAK_LINES_H
+#define BREAK_LINES_H
+
+#include <qstring.h>
+
+namespace khtml {
+
+ /*
+ array of unicode codes where breaking shouldn't occur.
+ (in sorted order because of using with binary search)
+ these are currently for Japanese, though simply adding
+ Korean, Chinese ones should work as well
+ */
+ /*
+ dontbreakbefore[] contains characters not covered by QChar::Punctuation_Close that shouldn't be broken before.
+ chars included in QChar::Punctuation_Close are listed below.(look at UAX #14)
+ - 3001 ideographic comma
+ - 3002 ideographic full stop
+ - FE50 small comma
+ - FF52 small full stop
+ - FF0C fullwidth comma
+ - FF0E fullwidth full stop
+ - FF61 halfwidth ideographic full stop
+ - FF64 halfwidth ideographic comma
+ these character is commented out.
+ */
+ const ushort dontbreakbefore[] = {
+ //0x3001, //ideographic comma
+ //0x3002, //ideographic full stop
+ 0x3005, //ideographic iteration mark
+ 0x3009, //right angle bracket
+ 0x300b, //right double angle bracket
+ 0x300d, //right corner bracket
+ 0x300f, //right white corner bracket
+ 0x3011, //right black lenticular bracket
+ 0x3015, //right tortoise shell bracket
+ 0x3041, //small a hiragana
+ 0x3043, //small i hiragana
+ 0x3045, //small u hiragana
+ 0x3047, //small e hiragana
+ 0x3049, //small o hiragana
+ 0x3063, //small tsu hiragana
+ 0x3083, //small ya hiragana
+ 0x3085, //small yu hiragana
+ 0x3087, //small yo hiragana
+ 0x308E, //small wa hiragana
+ 0x309B, //jap voiced sound mark
+ 0x309C, //jap semi-voiced sound mark
+ 0x309D, //jap iteration mark hiragana
+ 0x309E, //jap voiced iteration mark hiragana
+ 0x30A1, //small a katakana
+ 0x30A3, //small i katakana
+ 0x30A5, //small u katakana
+ 0x30A7, //small e katakana
+ 0x30A9, //small o katakana
+ 0x30C3, //small tsu katakana
+ 0x30E3, //small ya katakana
+ 0x30E5, //small yu katakana
+ 0x30E7, //small yo katakana
+ 0x30EE, //small wa katakana
+ 0x30F5, //small ka katakana
+ 0x30F6, //small ke katakana
+ 0x30FC, //jap prolonged sound mark
+ 0x30FD, //jap iteration mark katakana
+ 0x30FE, //jap voiced iteration mark katakana
+ //0xFE50, //small comma
+ //0xFF52, //small full stop
+ 0xFF01, //fullwidth exclamation mark
+ 0xFF09, //fullwidth right parenthesis
+ //0xFF0C, //fullwidth comma
+ 0xFF0D, //fullwidth hypen-minus
+ //0xFF0E, //fullwidth full stop
+ 0xFF1F, //fullwidth question mark
+ 0xFF3D, //fullwidth right square bracket
+ 0xFF5D, //fullwidth right curly bracket
+ //0xFF61, //halfwidth ideographic full stop
+ 0xFF63, //halfwidth right corner bracket
+ //0xFF64, //halfwidth ideographic comma
+ 0xFF67, //halfwidth katakana letter small a
+ 0xFF68, //halfwidth katakana letter small i
+ 0xFF69, //halfwidth katakana letter small u
+ 0xFF6a, //halfwidth katakana letter small e
+ 0xFF6b, //halfwidth katakana letter small o
+ 0xFF6c, //halfwidth katakana letter small ya
+ 0xFF6d, //halfwidth katakana letter small yu
+ 0xFF6e, //halfwidth katakana letter small yo
+ 0xFF6f, //halfwidth katakana letter small tu
+ 0xFF70 //halfwidth katakana-hiragana prolonged sound mark
+ };
+
+ // characters that aren't covered by QChar::Punctuation_Open
+ const ushort dontbreakafter[] = {
+ 0x3012, //postal mark
+ 0xFF03, //full width pound mark
+ 0xFF04, //full width dollar sign
+ 0xFF20, //full width @
+ 0xFFE1, //full width british pound sign
+ 0xFFE5 //full width yen sign
+ };
+
+ inline bool break_bsearch( const ushort* arr, const ushort val ) {
+ int left = 0;
+ int right = (sizeof(arr) / sizeof(ushort)) - 1;
+
+ while (1) {
+ if (left == right)
+ return val != arr[left];
+
+ int i = (left + right) >> 1;
+ if ( val == arr[i] )
+ return false;
+ if ( val < arr[i] )
+ right = i;
+ else
+ left = i + 1;
+ }
+ }
+
+ bool isBreakableThai( const QChar *string, const int pos, const int len);
+ void cleanup_thaibreaks();
+
+ inline bool isBreakable( const QChar *str, const int pos, int len )
+ {
+ const QChar *c = str+pos;
+ unsigned short ch = c->unicode();
+ if ( ch > 0xff ) {
+ // not latin1, need to do more sophisticated checks for asian fonts
+ unsigned char row = c->row();
+ if ( row == 0x0e ) {
+ // 0e00 - 0e7f == Thai
+ if ( c->cell() < 0x80 ) {
+ // consult libthai
+ return isBreakableThai(str, pos, len);
+ } else
+ return false;
+ }
+ if ( row > 0x2d && row < 0xfb || row == 0x11 ) {
+ /* asian line breaking. */
+ if ( pos == 0 )
+ return false; // never break before first character
+
+ // check for simple punctuation cases
+ QChar::Category cat = c->category();
+ if ( cat == QChar::Punctuation_Close ||
+ cat == QChar::Punctuation_Other ||
+ (str+(pos-1))->category() == QChar::Punctuation_Open )
+ return false;
+
+ // do binary search in dontbreak[]
+ return break_bsearch(dontbreakbefore, c->unicode()) &&
+ break_bsearch(dontbreakafter, (str+(pos-1))->unicode());
+ } else // no asian font
+ return c->isSpace();
+ } else {
+ if ( ch == ' ' || ch == '\n' )
+ return true;
+ }
+ return false;
+ }
+
+}
+
+#endif