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Diffstat (limited to 'src/kernel/qfontengine_x11.cpp')
| -rw-r--r-- | src/kernel/qfontengine_x11.cpp | 2724 |
1 files changed, 2724 insertions, 0 deletions
diff --git a/src/kernel/qfontengine_x11.cpp b/src/kernel/qfontengine_x11.cpp new file mode 100644 index 000000000..54b29f026 --- /dev/null +++ b/src/kernel/qfontengine_x11.cpp @@ -0,0 +1,2724 @@ +/**************************************************************************** +** +** ??? +** +** Copyright (C) 2003-2008 Trolltech ASA. All rights reserved. +** +** This file is part of the kernel module of the TQt GUI Toolkit. +** +** This file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free +** Software Foundation and appearing in the files LICENSE.GPL2 +** and LICENSE.GPL3 included in the packaging of this file. +** Alternatively you may (at your option) use any later version +** of the GNU General Public License if such license has been +** publicly approved by Trolltech ASA (or its successors, if any) +** and the KDE Free TQt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing retquirements will be met: +** http://trolltech.com/products/qt/licenses/licensing/opensource/. +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://trolltech.com/products/qt/licenses/licensing/licensingoverview +** or contact the sales department at sales@trolltech.com. +** +** This file may be used under the terms of the Q Public License as +** defined by Trolltech ASA and appearing in the file LICENSE.TQPL +** included in the packaging of this file. Licensees holding valid TQt +** Commercial licenses may use this file in accordance with the TQt +** Commercial License Agreement provided with the Software. +** +** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, +** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted +** herein. +** +**********************************************************************/ + +#include "qfontengine_p.h" + +// #define FONTENGINE_DEBUG + +#include <qwidget.h> +#include <qcstring.h> +#include <qtextcodec.h> + +#include "qbitmap.h" +#include "qfontdatabase.h" +#include "qpaintdevice.h" +#include "qpaintdevicemetrics.h" +#include "qpainter.h" +#include "qimage.h" + +#include "qt_x11_p.h" + +#include "qfont.h" +#include "qtextengine_p.h" + +#include <private/qunicodetables_p.h> + +#include <limits.h> + +// defined in qfontdatbase_x11.cpp +extern int qt_mib_for_xlfd_encoding( const char *encoding ); +extern int qt_xlfd_encoding_id( const char *encoding ); + +extern void qt_draw_transformed_rect( TQPainter *p, int x, int y, int w, int h, bool fill ); + +static void drawLines( TQPainter *p, TQFontEngine *fe, int baseline, int x1, int w, int textFlags ) +{ + int lw = fe->lineThickness(); + if ( textFlags & TQt::Underline ) { + int pos = fe->underlinePosition(); + qt_draw_transformed_rect( p, x1, baseline+pos, w, lw, TRUE ); + } + if ( textFlags & TQt::Overline ) { + int pos = fe->ascent()+1; + if ( !pos ) pos = 1; + qt_draw_transformed_rect( p, x1, baseline-pos, w, lw, TRUE ); + } + if ( textFlags & TQt::StrikeOut ) { + int pos = fe->ascent()/3; + if ( !pos ) pos = 1; + qt_draw_transformed_rect( p, x1, baseline-pos, w, lw, TRUE ); + } +} + + +inline static void qSafeXDestroyImage( XImage *x ) +{ + if ( x->data ) { + free( x->data ); + x->data = 0; + } + XDestroyImage( x ); +} + +extern bool qt_xForm_helper( const TQWMatrix &trueMat, int xoffset, + int type, int depth, + uchar *dptr, int dbpl, int p_inc, int dHeight, + uchar *sptr, int sbpl, int sWidth, int sHeight + ); + +static TQBitmap transform(Display *dpy, const TQBitmap &source, int xoff, int yoff, int w, int h, const TQWMatrix &matrix) +{ + int ws = source.width(); + int hs = source.height(); + + bool invertible; + TQWMatrix mat = matrix.invert( &invertible ); // invert matrix + + if (!invertible ) + return TQBitmap(); + mat.translate(xoff, yoff); + + XImage *xi = XGetImage(dpy, source.handle(), 0, 0, ws, hs, AllPlanes, XYPixmap); + + if ( !xi ) + return TQBitmap(); + + int sbpl = xi->bytes_per_line; + uchar *sptr = (uchar *)xi->data; + + int dbpl = (w+7)/8; + int dbytes = dbpl*h; + + uchar *dptr = (uchar *)malloc( dbytes ); // create buffer for bits + memset( dptr, 0, dbytes ); + + int type = xi->bitmap_bit_order == MSBFirst ? QT_XFORM_TYPE_MSBFIRST : QT_XFORM_TYPE_LSBFIRST; + int xbpl, p_inc; + xbpl = (w+7)/8; + p_inc = dbpl - xbpl; + + bool ok = qt_xForm_helper( mat, xi->xoffset, type, 1, dptr, xbpl, p_inc, h, sptr, sbpl, ws, hs ); + qSafeXDestroyImage(xi); + TQBitmap bm; + if (ok) { + bm = TQBitmap( w, h, dptr, TQImage::systemBitOrder() != TQImage::BigEndian ); + } else { +#if defined(QT_CHECK_RANGE) + qWarning( "TQFontEngineXft::tranform: xform failed"); +#endif + } + + free( dptr ); + return bm; +} + + +static void drawScaled(int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags, + Display *dpy, GC gc, TQPaintDevice *pdev, TQFontEngine *fe, + const TQWMatrix &xmat, float scale) +{ + // font doesn't support transformations, need to do it by hand + int w = qRound(si->width/scale); + int h = qRound((si->ascent + si->descent + 1)/scale); + if (w == 0 || h == 0) + return; + TQWMatrix mat1 = xmat; + mat1.scale(scale, scale); + + w += h; // add some pixels to width because of italic correction + TQBitmap bm( w, h, TRUE ); // create bitmap + TQPainter paint; + paint.begin( &bm ); // draw text in bitmap + fe->draw( &paint, 0, si->ascent/scale, engine, si, textFlags ); + paint.end(); + + TQRect pdevRect; + if (pdev->devType() == TQInternal::Widget) + pdevRect = ((TQWidget *)pdev)->rect(); + else if (pdev->devType() == TQInternal::Pixmap) + pdevRect = ((TQPixmap *)pdev)->rect(); + else + return; + + + TQRect br = mat1.mapRect(TQRect(x, y - si->ascent, w, h)); + TQRect br2 = br & pdevRect; + if (br2.width() <= 0 || br2.height() <= 0 + || br2.width() >= 32768 || br2.height() >= 32768) + return; + TQWMatrix mat = TQPixmap::trueMatrix( mat1, w, h ); + TQBitmap wx_bm = ::transform(dpy, bm, br2.x() - br.x(), br2.y() - br.y(), br2.width(), br2.height(), mat); + if ( wx_bm.isNull() ) + return; + + x = br2.x(); + y = br2.y(); + + TQt::HANDLE hd = pdev->handle(); + XSetFillStyle( dpy, gc, FillStippled ); + XSetStipple( dpy, gc, wx_bm.handle() ); + XSetTSOrigin( dpy, gc, x, y ); + XFillRectangle( dpy, hd, gc, x, y, wx_bm.width(), wx_bm.height() ); + XSetTSOrigin( dpy, gc, 0, 0 ); + XSetFillStyle( dpy, gc, FillSolid ); +} + + +TQFontEngine::~TQFontEngine() +{ +} + +int TQFontEngine::lineThickness() const +{ + // ad hoc algorithm + int score = fontDef.weight * fontDef.pixelSize; + int lw = score / 700; + + // looks better with thicker line for small pointsizes + if ( lw < 2 && score >= 1050 ) lw = 2; + if ( lw == 0 ) lw = 1; + + return lw; +} + +int TQFontEngine::underlinePosition() const +{ + int pos = ( ( lineThickness() * 2 ) + 3 ) / 6; + return pos ? pos : 1; +} + +// ------------------------------------------------------------------ +// The box font engine +// ------------------------------------------------------------------ + + +TQFontEngineBox::TQFontEngineBox( int size ) + : _size( size ) +{ + cache_cost = sizeof( TQFontEngineBox ); +} + +TQFontEngineBox::~TQFontEngineBox() +{ +} + +TQFontEngine::Error TQFontEngineBox::stringToCMap( const TQChar *, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool ) const +{ + if ( *nglyphs < len ) { + *nglyphs = len; + return OutOfMemory; + } + + memset( glyphs, 0, len * sizeof( glyph_t ) ); + *nglyphs = len; + + if ( advances ) { + for ( int i = 0; i < len; i++ ) + *(advances++) = _size; + } + return NoError; +} + +void TQFontEngineBox::draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ) +{ + Display *dpy = TQPaintDevice::x11AppDisplay(); + TQt::HANDLE hd = p->device()->handle(); + GC gc = p->gc; + +#ifdef FONTENGINE_DEBUG + p->save(); + p->setBrush( TQt::white ); + glyph_metrics_t ci = boundingBox( glyphs, offsets, numGlyphs ); + p->drawRect( x + ci.x, y + ci.y, ci.width, ci.height ); + p->drawRect( x + ci.x, y + 50 + ci.y, ci.width, ci.height ); + qDebug("bounding rect=%d %d (%d/%d)", ci.x, ci.y, ci.width, ci.height ); + p->restore(); + int xp = x; + int yp = y; +#endif + + GlyphAttributes *glyphAttributes = engine->glyphAttributes( si ); + + if ( p->txop > TQPainter::TxTranslate ) { + int xp = x; + int yp = _size + 2; + int s = _size - 3; + for (int k = 0; k < si->num_glyphs; k++) { + if (!glyphAttributes[k].zeroWidth) + qt_draw_transformed_rect( p, xp, yp, s, s, FALSE ); + xp += _size; + } + } else { + if ( p->txop == TQPainter::TxTranslate ) + p->map( x, y, &x, &y ); + + XRectangle rects[64]; + + int gl = 0; + while (gl < si->num_glyphs) { + int toDraw = TQMIN(64, si->num_glyphs-gl); + int adv = toDraw*_size; + if (x + adv < SHRT_MAX && x > SHRT_MIN) { + int ng = 0; + for (int k = 0; k < toDraw; k++) { + if (!glyphAttributes[gl + k].zeroWidth) { + rects[ng].x = x + (k * _size); + rects[ng].y = y - _size + 2; + rects[ng].width = rects[k].height = _size - 3; + ++ng; + } + } + XDrawRectangles(dpy, hd, gc, rects, ng); + } + gl += toDraw; + x += adv; + } + } + + if ( textFlags != 0 ) + drawLines( p, this, y, x, si->num_glyphs*_size, textFlags ); + +#ifdef FONTENGINE_DEBUG + x = xp; + y = yp; + p->save(); + p->setPen( TQt::red ); + for ( int i = 0; i < numGlyphs; i++ ) { + glyph_metrics_t ci = boundingBox( glyphs[i] ); + x += offsets[i].x; + y += offsets[i].y; + p->drawRect( x + ci.x, y + 50 + ci.y, ci.width, ci.height ); + qDebug("bounding ci[%d]=%d %d (%d/%d) / %d %d offset=(%d/%d)", i, ci.x, ci.y, ci.width, ci.height, + ci.xoff, ci.yoff, offsets[i].x, offsets[i].y ); + x += ci.xoff; + y += ci.yoff; + } + p->restore(); +#endif +} + +glyph_metrics_t TQFontEngineBox::boundingBox( const glyph_t *, const advance_t *, const qoffset_t *, int numGlyphs ) +{ + glyph_metrics_t overall; + overall.x = overall.y = 0; + overall.width = _size*numGlyphs; + overall.height = _size; + overall.xoff = overall.width; + overall.yoff = 0; + return overall; +} + +glyph_metrics_t TQFontEngineBox::boundingBox( glyph_t ) +{ + return glyph_metrics_t( 0, _size, _size, _size, _size, 0 ); +} + + + +int TQFontEngineBox::ascent() const +{ + return _size; +} + +int TQFontEngineBox::descent() const +{ + return 0; +} + +int TQFontEngineBox::leading() const +{ + int l = qRound( _size * 0.15 ); + return (l > 0) ? l : 1; +} + +int TQFontEngineBox::maxCharWidth() const +{ + return _size; +} + +int TQFontEngineBox::cmap() const +{ + return -1; +} + +const char *TQFontEngineBox::name() const +{ + return "null"; +} + +bool TQFontEngineBox::canRender( const TQChar *, int ) +{ + return TRUE; +} + +TQFontEngine::Type TQFontEngineBox::type() const +{ + return Box; +} + + + + +// ------------------------------------------------------------------ +// Xlfd cont engine +// ------------------------------------------------------------------ + +static inline XCharStruct *charStruct( XFontStruct *xfs, uint ch ) +{ + XCharStruct *xcs = 0; + unsigned char r = ch>>8; + unsigned char c = ch&0xff; + if ( r >= xfs->min_byte1 && + r <= xfs->max_byte1 && + c >= xfs->min_char_or_byte2 && + c <= xfs->max_char_or_byte2) { + if ( !xfs->per_char ) + xcs = &(xfs->min_bounds); + else { + xcs = xfs->per_char + ((r - xfs->min_byte1) * + (xfs->max_char_or_byte2 - + xfs->min_char_or_byte2 + 1)) + + (c - xfs->min_char_or_byte2); + if (xcs->width == 0 && xcs->ascent == 0 && xcs->descent == 0) + xcs = 0; + } + } + return xcs; +} + +TQFontEngineXLFD::TQFontEngineXLFD( XFontStruct *fs, const char *name, int mib ) + : _fs( fs ), _name( name ), _codec( 0 ), _scale( 1. ), _cmap( mib ) +{ + if ( _cmap ) _codec = TQTextCodec::codecForMib( _cmap ); + + cache_cost = (((fs->max_byte1 - fs->min_byte1) * + (fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1)) + + fs->max_char_or_byte2 - fs->min_char_or_byte2); + cache_cost = ((fs->max_bounds.ascent + fs->max_bounds.descent) * + (fs->max_bounds.width * cache_cost / 8)); + lbearing = SHRT_MIN; + rbearing = SHRT_MIN; + +#if 1 + // Server side transformations do not seem to work correctly for + // all types of fonts (for example, it works for bdf/pcf fonts, + // but not for ttf). It also seems to be extermely server + // dependent. The best thing is to just disable server side + // transformations until either server support matures or we + // figure out a better way to do it. + xlfd_transformations = XlfdTrUnsupported; +#else + xlfd_transformations = XlfdTrUnknown; + + // Hummingbird's Exceed X server will substitute 'fixed' for any + // known fonts, and it doesn't seem to support transformations, so + // we should never try to use xlfd transformations with it + if (strstr(ServerVendor(TQPaintDevice::x11AppDisplay()), "Hummingbird")) + xlfd_transformations = XlfdTrUnsupported; +#endif +} + +TQFontEngineXLFD::~TQFontEngineXLFD() +{ + XFreeFont( TQPaintDevice::x11AppDisplay(), _fs ); + _fs = 0; + TransformedFont *trf = transformed_fonts; + while ( trf ) { + XUnloadFont( TQPaintDevice::x11AppDisplay(), trf->xlfd_font ); + TransformedFont *tmp = trf; + trf = trf->next; + delete tmp; + } +} + +TQFontEngine::Error TQFontEngineXLFD::stringToCMap( const TQChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const +{ + if ( *nglyphs < len ) { + *nglyphs = len; + return OutOfMemory; + } + + if ( _codec ) { + bool haveNbsp = FALSE; + for ( int i = 0; i < len; i++ ) + if ( str[i].unicode() == 0xa0 ) { + haveNbsp = TRUE; + break; + } + + TQChar *chars = (TQChar *)str; + if ( haveNbsp || mirrored ) { + chars = (TQChar *)malloc( len*sizeof(TQChar) ); + for ( int i = 0; i < len; i++ ) + chars[i] = (str[i].unicode() == 0xa0 ? 0x20 : + (mirrored ? ::mirroredChar(str[i]).unicode() : str[i].unicode())); + } + _codec->fromUnicodeInternal( chars, glyphs, len ); + if (chars != str) + free( chars ); + } else { + glyph_t *g = glyphs + len; + const TQChar *c = str + len; + if ( mirrored ) { + while ( c != str ) + *(--g) = (--c)->unicode() == 0xa0 ? 0x20 : ::mirroredChar(*c).unicode(); + } else { + while ( c != str ) + *(--g) = (--c)->unicode() == 0xa0 ? 0x20 : c->unicode(); + } + } + *nglyphs = len; + + if ( advances ) { + glyph_t *g = glyphs + len; + advance_t *a = advances + len; + XCharStruct *xcs; + // inlined for better perfomance + if ( !_fs->per_char ) { + xcs = &_fs->min_bounds; + while ( a != advances ) + *(--a) = xcs->width; + } + else if ( !_fs->max_byte1 ) { + XCharStruct *base = _fs->per_char - _fs->min_char_or_byte2; + while ( g-- != glyphs ) { + unsigned int gl = *g; + xcs = (gl >= _fs->min_char_or_byte2 && gl <= _fs->max_char_or_byte2) ? + base + gl : 0; + *(--a) = (!xcs || (!xcs->width && !xcs->ascent && !xcs->descent)) ? _fs->ascent : xcs->width; + } + } + else { + while ( g != glyphs ) { + xcs = charStruct( _fs, *(--g) ); + *(--a) = (xcs ? xcs->width : _fs->ascent); + } + } + if ( _scale != 1. ) { + for ( int i = 0; i < len; i++ ) + advances[i] = qRound(advances[i]*_scale); + } + } + return NoError; +} + +#if defined(Q_C_CALLBACKS) +extern "C" { +#endif + +static bool x_font_load_error = FALSE; +static int x_font_errorhandler(Display *, XErrorEvent *) +{ + x_font_load_error = TRUE; + return 0; +} + +#if defined(Q_C_CALLBACKS) +} +#endif + + +void TQFontEngineXLFD::draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ) +{ + if ( !si->num_glyphs ) + return; + +// qDebug("TQFontEngineXLFD::draw( %d, %d, numglyphs=%d", x, y, si->num_glyphs ); + + Display *dpy = TQPaintDevice::x11AppDisplay(); + TQt::HANDLE hd = p->device()->handle(); + GC gc = p->gc; + + bool transform = FALSE; + int xorig = x; + int yorig = y; + + TQt::HANDLE font_id = _fs->fid; + if ( p->txop > TQPainter::TxTranslate || _scale < 0.9999 || _scale > 1.0001 ) { + bool degenerate = TQABS( p->m11()*p->m22() - p->m12()*p->m21() ) < 0.01; + if ( !degenerate && xlfd_transformations != XlfdTrUnsupported ) { + // need a transformed font from the server + TQCString xlfd_transformed = _name; + int field = 0; + char *data = xlfd_transformed.data(); + int pos = 0; + while ( field < 7 ) { + if ( data[pos] == '-' ) + field++; + pos++; + } + int endPos = pos; + while ( data[endPos] != '-' ) + endPos++; + float size = xlfd_transformed.mid( pos, endPos-pos ).toInt(); + float mat[4]; + mat[0] = p->m11()*size*_scale; + mat[1] = -p->m12()*size*_scale; + mat[2] = -p->m21()*size*_scale; + mat[3] = p->m22()*size*_scale; + + // check if we have it cached + TransformedFont *trf = transformed_fonts; + TransformedFont *prev = 0; + int i = 0; + while ( trf ) { + if ( trf->xx == mat[0] && + trf->xy == mat[1] && + trf->yx == mat[2] && + trf->yy == mat[3] ) + break; + TransformedFont *tmp = trf; + trf = trf->next; + if (i > 10) { + XUnloadFont( TQPaintDevice::x11AppDisplay(), tmp->xlfd_font ); + delete tmp; + prev->next = trf; + } else { + prev = tmp; + } + ++i; + } + if ( trf ) { + if ( prev ) { + // move to beginning of list + prev->next = trf->next; + trf->next = transformed_fonts; + transformed_fonts = trf; + } + font_id = trf->xlfd_font; + } else { + TQCString matrix="["; + for ( int i = 0; i < 4; i++ ) { + float f = mat[i]; + if ( f < 0 ) { + matrix += '~'; + f = -f; + } + matrix += TQString::number( f, 'f', 5 ).latin1(); + matrix += ' '; + } + matrix += ']'; + //qDebug("m: %2.2f %2.2f %2.2f %2.2f, matrix=%s", p->m11(), p->m12(), p->m21(), p->m22(), matrix.data()); + xlfd_transformed.replace( pos, endPos-pos, matrix ); + + x_font_load_error = FALSE; + XErrorHandler old_handler = XSetErrorHandler( x_font_errorhandler ); + font_id = XLoadFont( dpy, xlfd_transformed.data() ); + XSync( dpy, FALSE ); + XSetErrorHandler( old_handler ); + if ( x_font_load_error ) { + //qDebug( "couldn't load transformed font" ); + font_id = _fs->fid; + xlfd_transformations = XlfdTrUnsupported; + } else { + TransformedFont *trf = new TransformedFont; + trf->xx = mat[0]; + trf->xy = mat[1]; + trf->yx = mat[2]; + trf->yy = mat[3]; + trf->xlfd_font = font_id; + trf->next = transformed_fonts; + transformed_fonts = trf; + } + } + } + if ( degenerate || xlfd_transformations == XlfdTrUnsupported ) { + // XServer or font don't support server side transformations, need to do it by hand + float tmp = _scale; + _scale = 1.; + drawScaled(x, y, engine, si, textFlags, dpy, p->gc, p->device(), this, p->xmat, tmp); + _scale = tmp; + return; + } + transform = TRUE; + } else if ( p->txop == TQPainter::TxTranslate ) { + p->map( x, y, &x, &y ); + } + + XSetFont(dpy, gc, font_id); + +#ifdef FONTENGINE_DEBUG + p->save(); + p->setBrush( TQt::white ); + glyph_metrics_t ci = boundingBox( glyphs, advances, offsets, si->num_glyphs ); + p->drawRect( x + ci.x, y + ci.y, ci.width, ci.height ); + p->drawRect( x + ci.x, y + 100 + ci.y, ci.width, ci.height ); + qDebug("bounding rect=%d %d (%d/%d)", ci.x, ci.y, ci.width, ci.height ); + p->restore(); + int xp = x; + int yp = y; +#endif + + glyph_t *glyphs = engine->glyphs( si ); + advance_t *advances = engine->advances( si ); + qoffset_t *offsets = engine->offsets( si ); + + XChar2b ch[256]; + XChar2b *chars = ch; + if ( si->num_glyphs > 255 ) + chars = (XChar2b *)malloc( si->num_glyphs*sizeof(XChar2b) ); + + for (int i = 0; i < si->num_glyphs; i++) { + chars[i].byte1 = glyphs[i] >> 8; + chars[i].byte2 = glyphs[i] & 0xff; + } + + int xpos = x; + GlyphAttributes *glyphAttributes = engine->glyphAttributes( si ); + + if ( si->analysis.bidiLevel % 2 ) { + int i = si->num_glyphs; + while( i-- ) { + advance_t adv = advances[i]; + // qDebug("advance = %d/%d", adv.x, adv.y ); + x += adv; + glyph_metrics_t gi = boundingBox( glyphs[i] ); + int xp = x-offsets[i].x-gi.xoff; + int yp = y+offsets[i].y-gi.yoff; + if ( transform ) + p->map( xp, yp, &xp, &yp ); + if (!glyphAttributes[i].zeroWidth && xp < SHRT_MAX && xp > SHRT_MIN) + XDrawString16(dpy, hd, gc, xp, yp, chars+i, 1 ); + } + } else { + if ( transform || si->hasPositioning ) { + int i = 0; + while( i < si->num_glyphs ) { + int xp = x+offsets[i].x; + int yp = y+offsets[i].y; + if ( transform ) + p->map( xp, yp, &xp, &yp ); + if (!glyphAttributes[i].zeroWidth && xp < SHRT_MAX && xp > SHRT_MIN) + XDrawString16(dpy, hd, gc, xp, yp, chars+i, 1 ); + advance_t adv = advances[i]; + // qDebug("advance = %d/%d", adv.x, adv.y ); + x += adv; + i++; + } + } else { + // we can take a shortcut + int gl = 0; + while (gl < si->num_glyphs) { + int toDraw = TQMIN(64, si->num_glyphs-gl); + int adv = 0; + for (int i = gl; i < gl+toDraw; ++i) + adv += advances[i]; + if (x + adv < SHRT_MAX && x > SHRT_MIN) + XDrawString16(dpy, hd, gc, x, y, chars+gl, toDraw); + gl += toDraw; + x += adv; + } + } + } + + if ( chars != ch ) + free( chars ); + + if ( textFlags != 0 ) + drawLines( p, this, yorig, xorig, x-xpos, textFlags ); + +#ifdef FONTENGINE_DEBUG + x = xp; + y = yp; + p->save(); + p->setPen( TQt::red ); + for ( int i = 0; i < si->num_glyphs; i++ ) { + glyph_metrics_t ci = boundingBox( glyphs[i] ); + p->drawRect( x + ci.x + offsets[i].x, y + 100 + ci.y + offsets[i].y, ci.width, ci.height ); + qDebug("bounding ci[%d]=%d %d (%d/%d) / %d %d offs=(%d/%d) advance=(%d/%d)", i, ci.x, ci.y, ci.width, ci.height, + ci.xoff, ci.yoff, offsets[i].x, offsets[i].y, + advances[i].x, advances[i].y); + x += advances[i].x; + y += advances[i].y; + } + p->restore(); +#endif +} + +glyph_metrics_t TQFontEngineXLFD::boundingBox( const glyph_t *glyphs, const advance_t *advances, const qoffset_t *offsets, int numGlyphs ) +{ + int i; + + glyph_metrics_t overall; + int ymax = 0; + int xmax = 0; + for (i = 0; i < numGlyphs; i++) { + XCharStruct *xcs = charStruct( _fs, glyphs[i] ); + if (xcs) { + int x = overall.xoff + offsets[i].x - xcs->lbearing; + int y = overall.yoff + offsets[i].y - xcs->ascent; + overall.x = TQMIN( overall.x, x ); + overall.y = TQMIN( overall.y, y ); + xmax = TQMAX( xmax, overall.xoff + offsets[i].x + xcs->rbearing ); + ymax = TQMAX( ymax, y + xcs->ascent + xcs->descent ); + overall.xoff += qRound(advances[i]/_scale); + } else { + int size = _fs->ascent; + overall.x = TQMIN(overall.x, overall.xoff ); + overall.y = TQMIN(overall.y, overall.yoff - size ); + ymax = TQMAX( ymax, overall.yoff ); + overall.xoff += size; + xmax = TQMAX( xmax, overall.xoff ); + } + } + overall.height = ymax - overall.y; + overall.width = xmax - overall.x; + + if ( _scale != 1. ) { + overall.x = qRound(overall.x * _scale); + overall.y = qRound(overall.y * _scale); + overall.height = qRound(overall.height * _scale); + overall.width = qRound(overall.width * _scale); + overall.xoff = qRound(overall.xoff * _scale); + overall.yoff = qRound(overall.yoff * _scale); + } + return overall; +} + +glyph_metrics_t TQFontEngineXLFD::boundingBox( glyph_t glyph ) +{ + glyph_metrics_t gm; + // ### scale missing! + XCharStruct *xcs = charStruct( _fs, glyph ); + if (xcs) { + gm = glyph_metrics_t( xcs->lbearing, -xcs->ascent, xcs->rbearing- xcs->lbearing, xcs->ascent + xcs->descent, xcs->width, 0 ); + } else { + int size = _fs->ascent; + gm = glyph_metrics_t( 0, size, size, size, size, 0 ); + } + if ( _scale != 1. ) { + gm.x = qRound(gm.x * _scale); + gm.y = qRound(gm.y * _scale); + gm.height = qRound(gm.height * _scale); + gm.width = qRound(gm.width * _scale); + gm.xoff = qRound(gm.xoff * _scale); + gm.yoff = qRound(gm.yoff * _scale); + } + return gm; +} + + +int TQFontEngineXLFD::ascent() const +{ + return qRound(_fs->ascent*_scale); +} + +int TQFontEngineXLFD::descent() const +{ + return qRound((_fs->descent-1)*_scale); +} + +int TQFontEngineXLFD::leading() const +{ + int l = qRound((TQMIN(_fs->ascent, _fs->max_bounds.ascent) + + TQMIN(_fs->descent, _fs->max_bounds.descent)) * _scale * 0.15 ); + return (l > 0) ? l : 1; +} + +int TQFontEngineXLFD::maxCharWidth() const +{ + return qRound(_fs->max_bounds.width*_scale); +} + + +// Loads the font for the specified script +static inline int maxIndex(XFontStruct *f) { + return (((f->max_byte1 - f->min_byte1) * + (f->max_char_or_byte2 - f->min_char_or_byte2 + 1)) + + f->max_char_or_byte2 - f->min_char_or_byte2); +} + +int TQFontEngineXLFD::minLeftBearing() const +{ + if ( lbearing == SHRT_MIN ) { + if ( _fs->per_char ) { + XCharStruct *cs = _fs->per_char; + int nc = maxIndex(_fs) + 1; + int mx = cs->lbearing; + + for (int c = 1; c < nc; c++) { + // ignore the bearings for characters whose ink is + // completely outside the normal bounding box + if ((cs[c].lbearing <= 0 && cs[c].rbearing <= 0) || + (cs[c].lbearing >= cs[c].width && cs[c].rbearing >= cs[c].width)) + continue; + + int nmx = cs[c].lbearing; + + if (nmx < mx) + mx = nmx; + } + + ((TQFontEngineXLFD *)this)->lbearing = mx; + } else + ((TQFontEngineXLFD *)this)->lbearing = _fs->min_bounds.lbearing; + } + return qRound (lbearing*_scale); +} + +int TQFontEngineXLFD::minRightBearing() const +{ + if ( rbearing == SHRT_MIN ) { + if ( _fs->per_char ) { + XCharStruct *cs = _fs->per_char; + int nc = maxIndex(_fs) + 1; + int mx = cs->rbearing; + + for (int c = 1; c < nc; c++) { + // ignore the bearings for characters whose ink is + // completely outside the normal bounding box + if ((cs[c].lbearing <= 0 && cs[c].rbearing <= 0) || + (cs[c].lbearing >= cs[c].width && cs[c].rbearing >= cs[c].width)) + continue; + + int nmx = cs[c].rbearing; + + if (nmx < mx) + mx = nmx; + } + + ((TQFontEngineXLFD *)this)->rbearing = mx; + } else + ((TQFontEngineXLFD *)this)->rbearing = _fs->min_bounds.rbearing; + } + return qRound (rbearing*_scale); +} + +int TQFontEngineXLFD::cmap() const +{ + return _cmap; +} + +const char *TQFontEngineXLFD::name() const +{ + return _name; +} + +bool TQFontEngineXLFD::canRender( const TQChar *string, int len ) +{ + glyph_t glyphs[256]; + int nglyphs = 255; + glyph_t *g = glyphs; + if ( stringToCMap( string, len, g, 0, &nglyphs, FALSE ) == OutOfMemory ) { + g = (glyph_t *)malloc( nglyphs*sizeof(glyph_t) ); + stringToCMap( string, len, g, 0, &nglyphs, FALSE ); + } + + bool allExist = TRUE; + for ( int i = 0; i < nglyphs; i++ ) { + if ( !g[i] || !charStruct( _fs, g[i] ) ) { + allExist = FALSE; + break; + } + } + + if ( g != glyphs ) + free( g ); + + return allExist; +} + + +void TQFontEngineXLFD::setScale( double scale ) +{ + _scale = scale; +} + + +TQFontEngine::Type TQFontEngineXLFD::type() const +{ + return XLFD; +} + + +// ------------------------------------------------------------------ +// LatinXLFD engine +// ------------------------------------------------------------------ + +static const int engine_array_inc = 4; + +TQFontEngineLatinXLFD::TQFontEngineLatinXLFD( XFontStruct *xfs, const char *name, + int mib ) +{ + _engines = new TQFontEngine*[ engine_array_inc ]; + _engines[0] = new TQFontEngineXLFD( xfs, name, mib ); + _count = 1; + + cache_cost = _engines[0]->cache_cost; + + memset( glyphIndices, 0, sizeof( glyphIndices ) ); + memset( glyphAdvances, 0, sizeof( glyphAdvances ) ); + euroIndex = 0; + euroAdvance = 0; +} + +TQFontEngineLatinXLFD::~TQFontEngineLatinXLFD() +{ + for ( int i = 0; i < _count; ++i ) { + delete _engines[i]; + _engines[i] = 0; + } + delete [] _engines; + _engines = 0; +} + +void TQFontEngineLatinXLFD::findEngine( const TQChar &ch ) +{ + if ( ch.unicode() == 0 ) return; + + static const char *alternate_encodings[] = { + "iso8859-1", + "iso8859-2", + "iso8859-3", + "iso8859-4", + "iso8859-9", + "iso8859-10", + "iso8859-13", + "iso8859-14", + "iso8859-15", + "hp-roman8" + }; + static const int mib_count = sizeof( alternate_encodings ) / sizeof( const char * ); + + // see if one of the above mibs can map the char we want + TQTextCodec *codec = 0; + int which = -1; + int i; + for ( i = 0; i < mib_count; ++i ) { + const int mib = qt_mib_for_xlfd_encoding( alternate_encodings[i] ); + bool skip = FALSE; + for ( int e = 0; e < _count; ++e ) { + if ( _engines[e]->cmap() == mib ) { + skip = TRUE; + break; + } + } + if ( skip ) continue; + + codec = TQTextCodec::codecForMib( mib ); + if ( codec && codec->canEncode( ch ) ) { + which = i; + break; + } + } + + if ( ! codec || which == -1 ) + return; + + const int enc_id = qt_xlfd_encoding_id( alternate_encodings[which] ); + TQFontDef req = fontDef; + TQFontEngine *engine = TQFontDatabase::findFont( TQFont::Latin, 0, req, enc_id ); + if ( ! engine ) { + req.family = TQString::null; + engine = TQFontDatabase::findFont( TQFont::Latin, 0, req, enc_id ); + if ( ! engine ) return; + } + engine->setScale( scale() ); + + if ( ! ( _count % engine_array_inc ) ) { + // grow the engines array + TQFontEngine **old = _engines; + int new_size = + ( ( ( _count+engine_array_inc ) / engine_array_inc ) * engine_array_inc ); + _engines = new TQFontEngine*[new_size]; + for ( i = 0; i < _count; ++i ) + _engines[i] = old[i]; + delete [] old; + } + + _engines[_count] = engine; + const int hi = _count << 8; + ++_count; + + unsigned short chars[0x201]; + glyph_t glyphs[0x201]; + advance_t advances[0x201]; + for ( i = 0; i < 0x200; ++i ) + chars[i] = i; + chars[0x200] = 0x20ac; + int glyphCount = 0x201; + engine->stringToCMap( (const TQChar *) chars, 0x201, glyphs, advances, &glyphCount, FALSE ); + + // merge member data with the above + for ( i = 0; i < 0x200; ++i ) { + if ( glyphIndices[i] != 0 || glyphs[i] == 0 ) continue; + glyphIndices[i] = glyphs[i] >= 0x2100 ? glyphs[i] : hi | glyphs[i]; + glyphAdvances[i] = advances[i]; + } + if (!euroIndex && glyphs[0x200]) { + euroIndex = hi | glyphs[0x200]; + euroAdvance = advances[0x200]; + } +} + +TQFontEngine::Error +TQFontEngineLatinXLFD::stringToCMap( const TQChar *str, int len, glyph_t *glyphs, + advance_t *advances, int *nglyphs, bool mirrored ) const +{ + if ( *nglyphs < len ) { + *nglyphs = len; + return OutOfMemory; + } + + int i; + bool missing = FALSE; + const TQChar *c = str+len; + glyph_t *g = glyphs+len; + if ( advances ) { + int asc = ascent(); + advance_t *a = advances+len; + if ( mirrored ) { + while ( c != str ) { + --c; + --g; + --a; + if ( c->unicode() < 0x200 ) { + unsigned short ch = ::mirroredChar(*c).unicode(); + *g = glyphIndices[ch]; + *a = glyphAdvances[ch]; + } else { + if ( c->unicode() == 0x20ac ) { + *g = euroIndex; + *a = euroAdvance; + } else { + *g = 0; + *a = asc; + } + } + missing = ( missing || ( *g == 0 ) ); + } + } else { + while ( c != str ) { + --c; + --g; + --a; + if ( c->unicode() < 0x200 ) { + *g = glyphIndices[c->unicode()]; + *a = glyphAdvances[c->unicode()]; + } else { + if ( c->unicode() == 0x20ac ) { + *g = euroIndex; + *a = euroAdvance; + } else { + *g = 0; + *a = asc; + } + } + missing = ( missing || ( *g == 0 ) ); + } + } + } else { + if ( mirrored ) { + while ( c != str ) { + --c; + --g; + *g = ( ( c->unicode() < 0x200 ) ? glyphIndices[::mirroredChar(*c).unicode()] + : (c->unicode() == 0x20ac) ? euroIndex : 0 ); + missing = ( missing || ( *g == 0 ) ); + } + } else { + while ( c != str ) { + --c; + --g; + *g = ( ( c->unicode() < 0x200 ) ? glyphIndices[c->unicode()] + : (c->unicode() == 0x20ac) ? euroIndex : 0 ); + missing = ( missing || ( *g == 0 ) ); + } + } + } + + if ( missing ) { + for ( i = 0; i < len; ++i ) { + unsigned short uc = str[i].unicode(); + if ( glyphs[i] != 0 || (uc >= 0x200 && uc != 0x20ac) ) + continue; + + TQFontEngineLatinXLFD *that = (TQFontEngineLatinXLFD *) this; + that->findEngine( str[i] ); + glyphs[i] = (uc == 0x20ac ? euroIndex : that->glyphIndices[uc]); + if ( advances ) + advances[i] = (uc == 0x20ac ? euroAdvance : glyphAdvances[uc]); + } + } + + *nglyphs = len; + return NoError; +} + +void TQFontEngineLatinXLFD::draw( TQPainter *p, int x, int y, const TQTextEngine *engine, + const TQScriptItem *si, int textFlags ) +{ + if ( !si->num_glyphs ) return; + + glyph_t *glyphs = engine->glyphs( si ); + advance_t *advances = engine->advances( si ); + int which = glyphs[0] >> 8; + if (which > 0x20) + which = 0; + + int start = 0; + int end, i; + for ( end = 0; end < si->num_glyphs; ++end ) { + int e = glyphs[end] >> 8; + if (e > 0x20) + e = 0; + if ( e == which ) continue; + + // set the high byte to zero + if (which != 0) { + for ( i = start; i < end; ++i ) + glyphs[i] = glyphs[i] & 0xff; + } + + // draw the text + TQScriptItem si2 = *si; + si2.glyph_data_offset = si->glyph_data_offset + start; + si2.num_glyphs = end - start; + _engines[which]->draw( p, x, y, engine, &si2, textFlags ); + + // reset the high byte for all glyphs and advance to the next sub-string + const int hi = which << 8; + for ( i = start; i < end; ++i ) { + glyphs[i] = hi | glyphs[i]; + x += advances[i]; + } + + // change engine + start = end; + which = e; + } + + // set the high byte to zero + if (which != 0) { + for ( i = start; i < end; ++i ) + glyphs[i] = glyphs[i] & 0xff; + } + // draw the text + TQScriptItem si2 = *si; + si2.glyph_data_offset = si->glyph_data_offset + start; + si2.num_glyphs = end - start; + _engines[which]->draw( p, x, y, engine, &si2, textFlags ); + + // reset the high byte for all glyphs + if (which != 0) { + const int hi = which << 8; + for ( i = start; i < end; ++i ) + glyphs[i] = hi | glyphs[i]; + } +} + +glyph_metrics_t TQFontEngineLatinXLFD::boundingBox( const glyph_t *glyphs_const, + const advance_t *advances, + const qoffset_t *offsets, + int numGlyphs ) +{ + if ( numGlyphs <= 0 ) return glyph_metrics_t(); + + glyph_metrics_t overall; + + glyph_t *glyphs = (glyph_t *) glyphs_const; + int which = glyphs[0] >> 8; + if (which > 0x20) + which = 0; + + int start = 0; + int end, i; + for ( end = 0; end < numGlyphs; ++end ) { + int e = glyphs[end] >> 8; + if (e > 0x20) + e = 0; + if ( e == which ) continue; + + // set the high byte to zero + if (which != 0) { + for ( i = start; i < end; ++i ) + glyphs[i] = glyphs[i] & 0xff; + } + + // merge the bounding box for this run + const glyph_metrics_t gm = + _engines[which]->boundingBox( glyphs + start, + advances + start, + offsets + start, + end - start ); + + overall.x = TQMIN( overall.x, gm.x ); + overall.y = TQMIN( overall.y, gm.y ); + overall.width = overall.xoff + gm.width; + overall.height = TQMAX( overall.height + overall.y, gm.height + gm.y ) - + TQMIN( overall.y, gm.y ); + overall.xoff += gm.xoff; + overall.yoff += gm.yoff; + + // reset the high byte for all glyphs + if (which != 0) { + const int hi = which << 8; + for ( i = start; i < end; ++i ) + glyphs[i] = hi | glyphs[i]; + } + + // change engine + start = end; + which = e; + } + + // set the high byte to zero + if (which != 0) { + for ( i = start; i < end; ++i ) + glyphs[i] = glyphs[i] & 0xff; + } + + // merge the bounding box for this run + const glyph_metrics_t gm = + _engines[which]->boundingBox( glyphs + start, + advances + start, + offsets + start, + end - start ); + + overall.x = TQMIN( overall.x, gm.x ); + overall.y = TQMIN( overall.y, gm.y ); + overall.width = overall.xoff + gm.width; + overall.height = TQMAX( overall.height + overall.y, gm.height + gm.y ) - + TQMIN( overall.y, gm.y ); + overall.xoff += gm.xoff; + overall.yoff += gm.yoff; + + // reset the high byte for all glyphs + if (which != 0) { + const int hi = which << 8; + for ( i = start; i < end; ++i ) + glyphs[i] = hi | glyphs[i]; + } + + return overall; +} + +glyph_metrics_t TQFontEngineLatinXLFD::boundingBox( glyph_t glyph ) +{ + int engine = glyph >> 8; + if (engine > 0x20) + engine = 0; + Q_ASSERT( engine < _count ); + return _engines[engine]->boundingBox( engine > 0 ? glyph & 0xff : glyph ); +} + +int TQFontEngineLatinXLFD::ascent() const +{ + return _engines[0]->ascent(); +} + +int TQFontEngineLatinXLFD::descent() const +{ + return _engines[0]->descent(); +} + +int TQFontEngineLatinXLFD::leading() const +{ + return _engines[0]->leading(); +} + +int TQFontEngineLatinXLFD::maxCharWidth() const +{ + return _engines[0]->maxCharWidth(); +} + +int TQFontEngineLatinXLFD::minLeftBearing() const +{ + return _engines[0]->minLeftBearing(); +} + +int TQFontEngineLatinXLFD::minRightBearing() const +{ + return _engines[0]->minRightBearing(); +} + +const char *TQFontEngineLatinXLFD::name() const +{ + return _engines[0]->name(); +} + +bool TQFontEngineLatinXLFD::canRender( const TQChar *string, int len ) +{ + bool all = TRUE; + int i; + for ( i = 0; i < len; ++i ) { + if ( string[i].unicode() >= 0x200 || + glyphIndices[string[i].unicode()] == 0 ) { + if (string[i].unicode() != 0x20ac || euroIndex == 0) + all = FALSE; + break; + } + } + + if ( all ) + return TRUE; + + all = TRUE; + for ( i = 0; i < len; ++i ) { + if ( string[i].unicode() >= 0x200 ) { + if (string[i].unicode() == 0x20ac) { + if (euroIndex) + continue; + + findEngine(string[i]); + if (euroIndex) + continue; + } + all = FALSE; + break; + } + if ( glyphIndices[string[i].unicode()] != 0 ) continue; + + findEngine( string[i] ); + if ( glyphIndices[string[i].unicode()] == 0 ) { + all = FALSE; + break; + } + } + + return all; +} + +void TQFontEngineLatinXLFD::setScale( double scale ) +{ + int i; + for ( i = 0; i < _count; ++i ) + _engines[i]->setScale( scale ); + unsigned short chars[0x200]; + for ( i = 0; i < 0x200; ++i ) + chars[i] = i; + int glyphCount = 0x200; + _engines[0]->stringToCMap( (const TQChar *)chars, 0x200, + glyphIndices, glyphAdvances, &glyphCount, FALSE ); +} + + +// ------------------------------------------------------------------ +// Xft cont engine +// ------------------------------------------------------------------ +// #define FONTENGINE_DEBUG + +#ifndef QT_NO_XFTFREETYPE +class Q_HackPaintDevice : public TQPaintDevice +{ +public: + inline Q_HackPaintDevice() : TQPaintDevice( 0 ) {} + inline XftDraw *xftDrawHandle() const { + return (XftDraw *)rendhd; + } + +}; + +#ifdef QT_XFT2 +static inline void getGlyphInfo( XGlyphInfo *xgi, XftFont *font, int glyph ) +{ + FT_UInt x = glyph; + XftGlyphExtents( TQPaintDevice::x11AppDisplay(), font, &x, 1, xgi ); +} +#else +static inline XftFontStruct *getFontStruct( XftFont *font ) +{ + if (font->core) + return 0; + return font->u.ft.font; +} + +static inline void getGlyphInfo(XGlyphInfo *xgi, XftFont *font, int glyph) +{ + + XftTextExtents32(TQPaintDevice::x11AppDisplay(), font, (XftChar32 *) &glyph, 1, xgi); +} +#endif // QT_XFT2 + +static inline FT_Face lockFTFace( XftFont *font ) +{ +#ifdef QT_XFT2 + return XftLockFace( font ); +#else + if (font->core) return 0; + return font->u.ft.font->face; +#endif // QT_XFT2 +} + +static inline void unlockFTFace( XftFont *font ) +{ +#ifdef QT_XFT2 + XftUnlockFace( font ); +#else + Q_UNUSED( font ); +#endif // QT_XFT2 +} + + + +TQFontEngineXft::TQFontEngineXft( XftFont *font, XftPattern *pattern, int cmap ) + : _font( font ), _pattern( pattern ), _openType( 0 ), _cmap( cmap ) +{ + _face = lockFTFace( _font ); + +#ifndef QT_XFT2 + XftFontStruct *xftfs = getFontStruct( _font ); + if ( xftfs ) { + // dirty hack: we set the charmap in the Xftfreetype to -1, so + // XftFreetype assumes no encoding and really draws glyph + // indices. The FT_Face still has the Unicode encoding to we + // can convert from Unicode to glyph index + xftfs->charmap = -1; + } +#else + _cmap = -1; + // Xft maps Unicode and adobe roman for us. + for (int i = 0; i < _face->num_charmaps; ++i) { + FT_CharMap cm = _face->charmaps[i]; +// qDebug("font has charmap %x", cm->encoding); + if (cm->encoding == ft_encoding_adobe_custom + || cm->encoding == ft_encoding_symbol) { +// qDebug("font has adobe custom or ms symbol charmap"); + _cmap = i; + break; + } + } +#endif // QT_XFT2 + + + cache_cost = _font->height * _font->max_advance_width * + ( _face ? _face->num_glyphs : 1024 ); + + // if the Xft font is not antialiased, it uses bitmaps instead of + // 8-bit alpha maps... adjust the cache_cost to reflect this + Bool antialiased = TRUE; + if ( XftPatternGetBool( pattern, XFT_ANTIALIAS, + 0, &antialiased ) == XftResultMatch && + ! antialiased ) { + cache_cost /= 8; + } + lbearing = SHRT_MIN; + rbearing = SHRT_MIN; + + memset( widthCache, 0, sizeof(widthCache) ); + memset( cmapCache, 0, sizeof(cmapCache) ); +} + +TQFontEngineXft::~TQFontEngineXft() +{ + delete _openType; + unlockFTFace( _font ); + + XftFontClose( TQPaintDevice::x11AppDisplay(),_font ); + XftPatternDestroy( _pattern ); + _font = 0; + _pattern = 0; + TransformedFont *trf = transformed_fonts; + while ( trf ) { + XftFontClose( TQPaintDevice::x11AppDisplay(), trf->xft_font ); + TransformedFont *tmp = trf; + trf = trf->next; + delete tmp; + } +} + +#ifdef QT_XFT2 +static glyph_t getAdobeCharIndex(XftFont *font, int cmap, uint ucs4) +{ + FT_Face _face = XftLockFace( font ); + FT_Set_Charmap(_face, _face->charmaps[cmap]); + glyph_t g = FT_Get_Char_Index(_face, ucs4); + XftUnlockFace(font); + return g; +} +#endif + +TQFontEngine::Error TQFontEngineXft::stringToCMap( const TQChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const +{ + if ( *nglyphs < len ) { + *nglyphs = len; + return OutOfMemory; + } + +#ifdef QT_XFT2 + if (_cmap != -1) { + for ( int i = 0; i < len; ++i ) { + unsigned short uc = str[i].unicode(); + if (mirrored) + uc = ::mirroredChar(str[i]).unicode(); + glyphs[i] = uc < cmapCacheSize ? cmapCache[uc] : 0; + if ( !glyphs[i] ) { + glyph_t glyph = XftCharIndex(0, _font, uc); + if (!glyph) + glyph = getAdobeCharIndex(_font, _cmap, uc); + glyphs[i] = glyph; + if ( uc < cmapCacheSize ) + ((TQFontEngineXft *)this)->cmapCache[uc] = glyph; + } + } + } else if ( mirrored ) { + for ( int i = 0; i < len; ++i ) { + unsigned short uc = ::mirroredChar(str[i]).unicode(); + glyphs[i] = uc < cmapCacheSize ? cmapCache[uc] : 0; + if ( !glyphs[i] ) { + if (uc == 0xa0) + uc = 0x20; + glyph_t glyph = XftCharIndex(0, _font, uc); + glyphs[i] = glyph; + if ( uc < cmapCacheSize ) + ((TQFontEngineXft *)this)->cmapCache[uc] = glyph; + } + } + } else { + for ( int i = 0; i < len; ++i ) { + unsigned short uc = str[i].unicode(); + glyphs[i] = uc < cmapCacheSize ? cmapCache[uc] : 0; + if ( !glyphs[i] ) { + if (uc == 0xa0) + uc = 0x20; + glyph_t glyph = XftCharIndex(0, _font, uc); + glyphs[i] = glyph; + if ( uc < cmapCacheSize ) + ((TQFontEngineXft *)this)->cmapCache[uc] = glyph; + } + } + } + + if ( advances ) { + for ( int i = 0; i < len; i++ ) { + FT_UInt glyph = *(glyphs + i); + advances[i] = (glyph < widthCacheSize) ? widthCache[glyph] : 0; + if ( !advances[i] ) { + XGlyphInfo gi; + XftGlyphExtents( TQPaintDevice::x11AppDisplay(), _font, &glyph, 1, &gi ); + advances[i] = gi.xOff; + if ( glyph < widthCacheSize && gi.xOff > 0 && gi.xOff < 0x100 ) + ((TQFontEngineXft *)this)->widthCache[glyph] = gi.xOff; + } + } + if ( _scale != 1. ) { + for ( int i = 0; i < len; i++ ) + advances[i] = qRound(advances[i]*_scale); + } + } +#else + if ( !_face ) { + if ( mirrored ) { + for ( int i = 0; i < len; i++ ) + glyphs[i] = ::mirroredChar(str[i]).unicode(); + } else { + for ( int i = 0; i < len; i++ ) + glyphs[i] = str[i].unicode(); + } + } else { + if ( _cmap == 1 ) { + // symbol font + for ( int i = 0; i < len; i++ ) { + unsigned short uc = str[i].unicode(); + glyphs[i] = uc < cmapCacheSize ? cmapCache[uc] : 0; + if ( !glyphs[i] ) { + glyph_t glyph = FT_Get_Char_Index( _face, uc ); + if(!glyph && uc < 0x100) + glyph = FT_Get_Char_Index( _face, uc+0xf000 ); + glyphs[i] = glyph; + if ( uc < cmapCacheSize ) + ((TQFontEngineXft *)this)->cmapCache[uc] = glyph; + } + } + } else if ( mirrored ) { + for ( int i = 0; i < len; i++ ) { + unsigned short uc = ::mirroredChar(str[i]).unicode(); + glyphs[i] = uc < cmapCacheSize ? cmapCache[uc] : 0; + if ( !glyphs[i] ) { + glyph_t glyph = FT_Get_Char_Index( _face, uc ); + glyphs[i] = glyph; + if ( uc < cmapCacheSize ) + ((TQFontEngineXft *)this)->cmapCache[uc] = glyph; + } + } + } else { + for ( int i = 0; i < len; i++ ) { + unsigned short uc = str[i].unicode(); + glyphs[i] = uc < cmapCacheSize ? cmapCache[uc] : 0; + if ( !glyphs[i] ) { + glyph_t glyph = FT_Get_Char_Index( _face, uc ); + glyphs[i] = glyph; + if ( uc < cmapCacheSize ) + ((TQFontEngineXft *)this)->cmapCache[uc] = glyph; + } + } + } + } + + if ( advances ) { + for ( int i = 0; i < len; i++ ) { + XftChar16 glyph = *(glyphs + i); + advances[i] = (glyph < widthCacheSize) ? widthCache[glyph] : 0; + if ( !advances[i] ) { + XGlyphInfo gi; + XftTextExtents16(TQPaintDevice::x11AppDisplay(), _font, &glyph, 1, &gi); + advances[i] = gi.xOff; + if ( glyph < widthCacheSize && gi.xOff > 0 && gi.xOff < 0x100 ) + ((TQFontEngineXft *)this)->widthCache[glyph] = gi.xOff; + } + } + if ( _scale != 1. ) { + for ( int i = 0; i < len; i++ ) + advances[i] = qRound(advances[i]*_scale); + } + } +#endif // QT_XFT2 + + *nglyphs = len; + return NoError; +} + + +void TQFontEngineXft::recalcAdvances( int len, glyph_t *glyphs, advance_t *advances ) +{ + +#ifdef QT_XFT2 + for ( int i = 0; i < len; i++ ) { + FT_UInt glyph = *(glyphs + i); + advances[i] = (glyph < widthCacheSize) ? widthCache[glyph] : 0; + if ( !advances[i] ) { + XGlyphInfo gi; + XftGlyphExtents( TQPaintDevice::x11AppDisplay(), _font, &glyph, 1, &gi ); + advances[i] = gi.xOff; + if ( glyph < widthCacheSize && gi.xOff > 0 && gi.xOff < 0x100 ) + ((TQFontEngineXft *)this)->widthCache[glyph] = gi.xOff; + } + if ( _scale != 1. ) { + for ( int i = 0; i < len; i++ ) + advances[i] = qRound(advances[i]*_scale); + } + } +#else + for ( int i = 0; i < len; i++ ) { + XftChar16 glyph = *(glyphs + i); + advances[i] = (glyph < widthCacheSize) ? widthCache[glyph] : 0; + if ( !advances[i] ) { + XGlyphInfo gi; + XftTextExtents16(TQPaintDevice::x11AppDisplay(), _font, &glyph, 1, &gi); + advances[i] = gi.xOff; + if ( glyph < widthCacheSize && gi.xOff > 0 && gi.xOff < 0x100 ) + ((TQFontEngineXft *)this)->widthCache[glyph] = gi.xOff; + } + } + if ( _scale != 1. ) { + for ( int i = 0; i < len; i++ ) + advances[i] = qRound(advances[i]*_scale); + } +#endif // QT_XFT2 +} + +//#define FONTENGINE_DEBUG +void TQFontEngineXft::draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ) +{ + if ( !si->num_glyphs ) + return; + + Display *dpy = TQPaintDevice::x11AppDisplay(); + + int xorig = x; + int yorig = y; + + GlyphAttributes *glyphAttributes = engine->glyphAttributes( si ); + + XftFont *fnt = _font; + bool transform = FALSE; + if ( p->txop >= TQPainter::TxScale || p->rop != TQt::CopyROP || _scale < 0.9999 || _scale > 1.001) { + bool can_scale = (_face->face_flags & FT_FACE_FLAG_SCALABLE) && p->rop == TQt::CopyROP; + double size = (p->m11()*p->m22() - p->m12()*p->m21())*_scale*_scale*fontDef.pixelSize*fontDef.pixelSize; + if (size > 256*256 || _scale < .9999 || _scale > 1.001) + can_scale = FALSE; + if (!can_scale) { + // font doesn't support transformations, need to do it by hand + float tmp = _scale; + _scale = 1.; + drawScaled(x, y, engine, si, textFlags, dpy, p->gc, p->device(), this, p->xmat, tmp); + _scale = tmp; + return; + } + + XftMatrix *mat = 0; + XftPatternGetMatrix( _pattern, XFT_MATRIX, 0, &mat ); + XftMatrix m2; + m2.xx = p->m11()*_scale; + m2.xy = -p->m21()*_scale; + m2.yx = -p->m12()*_scale; + m2.yy = p->m22()*_scale; + + // check if we have it cached + TransformedFont *trf = transformed_fonts; + TransformedFont *prev = 0; + int i = 0; + while ( trf ) { + if ( trf->xx == (float)m2.xx && + trf->xy == (float)m2.xy && + trf->yx == (float)m2.yx && + trf->yy == (float)m2.yy ) + break; + TransformedFont *tmp = trf; + trf = trf->next; + if (i > 10) { + XftFontClose( TQPaintDevice::x11AppDisplay(), tmp->xft_font ); + delete tmp; + prev->next = trf; + } else { + prev = tmp; + } + ++i; + } + if ( trf ) { + if ( prev ) { + // move to beginning of list + prev->next = trf->next; + trf->next = transformed_fonts; + transformed_fonts = trf; + } + fnt = trf->xft_font; + } else { + if ( mat ) + XftMatrixMultiply( &m2, &m2, mat ); + + XftPattern *pattern = XftPatternDuplicate( _pattern ); + XftPatternDel( pattern, XFT_MATRIX ); + XftPatternAddMatrix( pattern, XFT_MATRIX, &m2 ); + + fnt = XftFontOpenPattern( dpy, pattern ); +#ifndef QT_XFT2 + XftFontStruct *xftfs = getFontStruct( fnt ); + if ( xftfs ) { + // dirty hack: we set the charmap in the Xftfreetype to -1, so + // XftFreetype assumes no encoding and really draws glyph + // indices. The FT_Face still has the Unicode encoding to we + // can convert from Unicode to glyph index + xftfs->charmap = -1; + } +#endif // QT_XFT2 + TransformedFont *trf = new TransformedFont; + trf->xx = (float)m2.xx; + trf->xy = (float)m2.xy; + trf->yx = (float)m2.yx; + trf->yy = (float)m2.yy; + trf->xft_font = fnt; + trf->next = transformed_fonts; + transformed_fonts = trf; + } + transform = TRUE; + } else if ( p->txop == TQPainter::TxTranslate ) { + p->map( x, y, &x, &y ); + } + + glyph_t *glyphs = engine->glyphs( si ); + advance_t *advances = engine->advances( si ); + qoffset_t *offsets = engine->offsets( si ); + + const TQColor &pen = p->cpen.color(); + XftDraw *draw = ((Q_HackPaintDevice *)p->pdev)->xftDrawHandle(); + + XftColor col; + col.color.red = pen.red () | pen.red() << 8; + col.color.green = pen.green () | pen.green() << 8; + col.color.blue = pen.blue () | pen.blue() << 8; + col.color.alpha = 0xffff; + col.pixel = pen.pixel(); +#ifdef FONTENGINE_DEBUG + qDebug("===== drawing %d glyphs reverse=%s ======", si->num_glyphs, si->analysis.bidiLevel % 2?"TRUE":"FALSE" ); + p->save(); + p->setBrush( TQt::white ); + glyph_metrics_t ci = boundingBox( glyphs, advances, offsets, si->num_glyphs ); + p->drawRect( x + ci.x, y + ci.y, ci.width, ci.height ); + p->drawRect( x + ci.x, y + 100 + ci.y, ci.width, ci.height ); + qDebug("bounding rect=%d %d (%d/%d)", ci.x, ci.y, ci.width, ci.height ); + p->restore(); + int yp = y; + int xp = x; +#endif + + if ( textFlags != 0 ) + drawLines( p, this, yorig, xorig, si->width, textFlags ); + + + if ( si->isSpace ) + return; + + if ( transform || si->hasPositioning ) { + if ( si->analysis.bidiLevel % 2 ) { + int i = si->num_glyphs; + while( i-- ) { + int xp = x + offsets[i].x; + int yp = y + offsets[i].y; + if ( transform ) + p->map( xp, yp, &xp, &yp ); +#ifdef QT_XFT2 + FT_UInt glyph = *(glyphs + i); + if (!glyphAttributes[i].zeroWidth && xp < SHRT_MAX && xp > SHRT_MIN) + XftDrawGlyphs( draw, &col, fnt, xp, yp, &glyph, 1 ); +#else + if (!glyphAttributes[i].zeroWidth && xp < SHRT_MAX && xp > SHRT_MIN) + XftDrawString16( draw, &col, fnt, xp, yp, (XftChar16 *) (glyphs+i), 1); +#endif // QT_XFT2 +#ifdef FONTENGINE_DEBUG + glyph_metrics_t gi = boundingBox( glyphs[i] ); + p->drawRect( x+offsets[i].x+gi.x, y+offsets[i].y+100+gi.y, gi.width, gi.height ); + p->drawLine( x+offsets[i].x, y + 150 + 5*i , x+offsets[i].x+advances[i], y + 150 + 5*i ); + p->drawLine( x+offsets[i].x, y + 152 + 5*i , x+offsets[i].x+gi.xoff, y + 152 + 5*i ); + qDebug("bounding ci[%d]=%d %d (%d/%d) / %d %d offs=(%d/%d) advance=%d", i, gi.x, gi.y, gi.width, gi.height, + gi.xoff, gi.yoff, offsets[i].x, offsets[i].y, advances[i]); +#endif + x += advances[i]; + } + } else { + int i = 0; + while ( i < si->num_glyphs ) { + int xp = x + offsets[i].x; + int yp = y + offsets[i].y; + if ( transform ) + p->map( xp, yp, &xp, &yp ); +#ifdef QT_XFT2 + FT_UInt glyph = *(glyphs + i); + if (!glyphAttributes[i].zeroWidth && xp < SHRT_MAX && xp > SHRT_MIN) + XftDrawGlyphs( draw, &col, fnt, xp, yp, &glyph, 1 ); +#else + if (!glyphAttributes[i].zeroWidth && xp < SHRT_MAX && xp > SHRT_MIN) + XftDrawString16( draw, &col, fnt, xp, yp, (XftChar16 *) (glyphs+i), 1 ); +#endif // QT_XFT2 + // qDebug("advance = %d/%d", adv.x, adv.y ); + x += advances[i]; + i++; + } + } + } else { + // Xft has real trouble drawing the glyphs on their own. + // Drawing them as one string increases performance significantly. +#ifdef QT_XFT2 + // #### we should use a different method anyways on Xft2 + FT_UInt g[64]; + int gl = 0; + while (gl < si->num_glyphs) { + int toDraw = TQMIN(64, si->num_glyphs-gl); + int adv = 0; + if ( si->analysis.bidiLevel % 2 ) { + for ( int i = 0; i < toDraw; i++ ) { + g[i] = glyphs[si->num_glyphs-1-(gl+i)]; + adv += advances[si->num_glyphs-1-(gl+i)]; + } + } else { + for ( int i = 0; i < toDraw; i++ ) { + g[i] = glyphs[gl+i]; + adv += advances[gl+i]; + } + } + if (x + adv < SHRT_MAX && x > SHRT_MIN) + XftDrawGlyphs( draw, &col, fnt, x, y, g, toDraw ); + gl += toDraw; + x += adv; + } +#else + XftChar16 g[64]; + int gl = 0; + while (gl < si->num_glyphs) { + int toDraw = TQMIN(64, si->num_glyphs-gl); + int adv = 0; + if ( si->analysis.bidiLevel % 2 ) { + for ( int i = 0; i < toDraw; i++ ) { + g[i] = glyphs[si->num_glyphs-1-(gl+i)]; + adv += advances[si->num_glyphs-1-(gl+i)]; + } + } else { + for ( int i = 0; i < toDraw; i++ ) { + g[i] = glyphs[gl+i]; + adv += advances[gl+i]; + } + } + if (x + adv < SHRT_MAX && x > SHRT_MIN) + XftDrawString16( draw, &col, fnt, x, y, g, toDraw ); + gl += toDraw; + x += adv; + } +#endif // QT_XFT2 + } + +#ifdef FONTENGINE_DEBUG + if ( !si->analysis.bidiLevel % 2 ) { + x = xp; + y = yp; + p->save(); + p->setPen( TQt::red ); + for ( int i = 0; i < si->num_glyphs; i++ ) { + glyph_metrics_t ci = boundingBox( glyphs[i] ); + p->drawRect( x + ci.x + offsets[i].x, y + 100 + ci.y + offsets[i].y, ci.width, ci.height ); + qDebug("bounding ci[%d]=%d %d (%d/%d) / %d %d offs=(%d/%d) advance=%d", i, ci.x, ci.y, ci.width, ci.height, + ci.xoff, ci.yoff, offsets[i].x, offsets[i].y, advances[i]); + x += advances[i]; + } + p->restore(); + } +#endif +} + +glyph_metrics_t TQFontEngineXft::boundingBox( const glyph_t *glyphs, const advance_t *advances, const qoffset_t *offsets, int numGlyphs ) +{ + XGlyphInfo xgi; + + glyph_metrics_t overall; + int ymax = 0; + int xmax = 0; + if (_scale != 1) { + for (int i = 0; i < numGlyphs; i++) { + getGlyphInfo( &xgi, _font, glyphs[i] ); + int x = overall.xoff + offsets[i].x - xgi.x; + int y = overall.yoff + offsets[i].y - xgi.y; + overall.x = TQMIN( overall.x, x ); + overall.y = TQMIN( overall.y, y ); + xmax = TQMAX( xmax, x + xgi.width ); + ymax = TQMAX( ymax, y + xgi.height ); + overall.xoff += qRound(advances[i]/_scale); + } + overall.x = qRound(overall.x * _scale); + overall.y = qRound(overall.y * _scale); + overall.xoff = qRound(overall.xoff * _scale); + overall.yoff = qRound(overall.yoff * _scale); + xmax = qRound(xmax * _scale); + ymax = qRound(ymax * _scale); + } else { + for (int i = 0; i < numGlyphs; i++) { + getGlyphInfo( &xgi, _font, glyphs[i] ); + int x = overall.xoff + offsets[i].x - xgi.x; + int y = overall.yoff + offsets[i].y - xgi.y; + overall.x = TQMIN( overall.x, x ); + overall.y = TQMIN( overall.y, y ); + xmax = TQMAX( xmax, x + xgi.width ); + ymax = TQMAX( ymax, y + xgi.height ); + overall.xoff += advances[i]; + } + } + overall.height = ymax - overall.y; + overall.width = xmax - overall.x; + return overall; +} + +glyph_metrics_t TQFontEngineXft::boundingBox( glyph_t glyph ) +{ + XGlyphInfo xgi; + getGlyphInfo( &xgi, _font, glyph ); + glyph_metrics_t gm = glyph_metrics_t( -xgi.x, -xgi.y, xgi.width, xgi.height, xgi.xOff, -xgi.yOff ); + if ( _scale != 1. ) { + gm.x = qRound(gm.x * _scale); + gm.y = qRound(gm.y * _scale); + gm.height = qRound(gm.height * _scale); + gm.width = qRound(gm.width * _scale); + gm.xoff = qRound(gm.xoff * _scale); + gm.yoff = qRound(gm.yoff * _scale); + } + return gm; +} + + + +int TQFontEngineXft::ascent() const +{ + return qRound(_font->ascent*_scale); +} + +int TQFontEngineXft::descent() const +{ + return qRound((_font->descent-1)*_scale); +} + +// #### use Freetype to determine this +int TQFontEngineXft::leading() const +{ + int l = qRound(TQMIN( _font->height - (_font->ascent + _font->descent), + ((_font->ascent + _font->descent) >> 4)*_scale )); + return (l > 0) ? l : 1; +} + +// #### use Freetype to determine this +int TQFontEngineXft::lineThickness() const +{ + // ad hoc algorithm + int score = fontDef.weight * fontDef.pixelSize; + int lw = score / 700; + + // looks better with thicker line for small pointsizes + if ( lw < 2 && score >= 1050 ) lw = 2; + if ( lw == 0 ) lw = 1; + + return lw; +} + +// #### use Freetype to determine this +int TQFontEngineXft::underlinePosition() const +{ + int pos = ( ( lineThickness() * 2 ) + 3 ) / 6; + return pos ? pos : 1; +} + +int TQFontEngineXft::maxCharWidth() const +{ + return qRound(_font->max_advance_width*_scale); +} + +static const ushort char_table[] = { + 40, + 67, + 70, + 75, + 86, + 88, + 89, + 91, + 102, + 114, + 124, + 127, + 205, + 645, + 884, + 922, + 1070, + 12386 +}; + +static const int char_table_entries = sizeof(char_table)/sizeof(ushort); + + +int TQFontEngineXft::minLeftBearing() const +{ + if ( lbearing == SHRT_MIN ) + minRightBearing(); // calculates both + + return lbearing; +} + +int TQFontEngineXft::minRightBearing() const +{ + if ( rbearing == SHRT_MIN ) { + TQFontEngineXft *that = (TQFontEngineXft *)this; + that->lbearing = that->rbearing = 0; + TQChar *ch = (TQChar *)char_table; + glyph_t glyphs[char_table_entries]; + int ng = char_table_entries; + stringToCMap(ch, char_table_entries, glyphs, 0, &ng, FALSE); + while (--ng) { + if (glyphs[ng]) { + glyph_metrics_t gi = that->boundingBox( glyphs[ng] ); + if (gi.xoff) { + that->lbearing = TQMIN(lbearing, gi.x); + that->rbearing = TQMIN(rbearing, gi.xoff - gi.x - gi.width); + } + } + } + } + + return rbearing; +} + +int TQFontEngineXft::cmap() const +{ + return _cmap; +} + +const char *TQFontEngineXft::name() const +{ + return "xft"; +} + +void TQFontEngineXft::setScale( double scale ) +{ + _scale = scale; +} + +bool TQFontEngineXft::canRender( const TQChar *string, int len ) +{ + bool allExist = TRUE; + +#ifdef QT_XFT2 + if (_cmap != -1) { + for ( int i = 0; i < len; i++ ) { + if (!XftCharExists(0, _font, string[i].unicode()) + && getAdobeCharIndex(_font, _cmap, string[i].unicode()) == 0) { + allExist = FALSE; + break; + } + } + } else { + for ( int i = 0; i < len; i++ ) { + if (!XftCharExists(0, _font, string[i].unicode())) { + allExist = FALSE; + break; + } + } + } +#else + glyph_t glyphs[256]; + int nglyphs = 255; + glyph_t *g = glyphs; + if ( stringToCMap( string, len, g, 0, &nglyphs, FALSE ) == OutOfMemory ) { + g = (glyph_t *)malloc( nglyphs*sizeof(glyph_t) ); + stringToCMap( string, len, g, 0, &nglyphs, FALSE ); + } + + for ( int i = 0; i < nglyphs; i++ ) { + if ( !XftGlyphExists(TQPaintDevice::x11AppDisplay(), _font, g[i]) ) { + allExist = FALSE; + break; + } + } + + if ( g != glyphs ) + free( g ); +#endif // QT_XFT2 + + return allExist; +} + +TQOpenType *TQFontEngineXft::openType() const +{ +// qDebug("openTypeIface requested!"); + if ( _openType ) + return _openType; + + if ( !_face || ! FT_IS_SFNT( _face ) ) + return 0; + + TQFontEngineXft *that = (TQFontEngineXft *)this; + that->_openType = new TQOpenType(that); + return _openType; +} + + +TQFontEngine::Type TQFontEngineXft::type() const +{ + return Xft; +} +#endif + + +// -------------------------------------------------------------------------------------------------------------------- +// Open type support +// -------------------------------------------------------------------------------------------------------------------- + +#ifndef QT_NO_XFTFREETYPE + +#include "qscriptengine_p.h" + +//#define OT_DEBUG + +#ifdef OT_DEBUG +static inline char *tag_to_string(FT_ULong tag) +{ + static char string[5]; + string[0] = (tag >> 24)&0xff; + string[1] = (tag >> 16)&0xff; + string[2] = (tag >> 8)&0xff; + string[3] = tag&0xff; + string[4] = 0; + return string; +} +#endif + +#define DefaultLangSys 0xffff +#define DefaultScript FT_MAKE_TAG('D', 'F', 'L', 'T') + +enum { + RetquiresGsub = 1, + RetquiresGpos = 2 +}; + +struct OTScripts { + unsigned int tag; + int flags; +}; + +static const OTScripts ot_scripts [] = { +// // European Alphabetic Scripts +// Latin, + { FT_MAKE_TAG( 'l', 'a', 't', 'n' ), 0 }, +// Greek, + { FT_MAKE_TAG( 'g', 'r', 'e', 'k' ), 0 }, +// Cyrillic, + { FT_MAKE_TAG( 'c', 'y', 'r', 'l' ), 0 }, +// Armenian, + { FT_MAKE_TAG( 'a', 'r', 'm', 'n' ), 0 }, +// Georgian, + { FT_MAKE_TAG( 'g', 'e', 'o', 'r' ), 0 }, +// Runic, + { FT_MAKE_TAG( 'r', 'u', 'n', 'r' ), 0 }, +// Ogham, + { FT_MAKE_TAG( 'o', 'g', 'a', 'm' ), 0 }, +// SpacingModifiers, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, +// CombiningMarks, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, + +// // Middle Eastern Scripts +// Hebrew, + { FT_MAKE_TAG( 'h', 'e', 'b', 'r' ), 1 }, +// Arabic, + { FT_MAKE_TAG( 'a', 'r', 'a', 'b' ), 1 }, +// Syriac, + { FT_MAKE_TAG( 's', 'y', 'r', 'c' ), 1 }, +// Thaana, + { FT_MAKE_TAG( 't', 'h', 'a', 'a' ), 1 }, + +// // South and Southeast Asian Scripts +// Devanagari, + { FT_MAKE_TAG( 'd', 'e', 'v', 'a' ), 1 }, +// Bengali, + { FT_MAKE_TAG( 'b', 'e', 'n', 'g' ), 1 }, +// Gurmukhi, + { FT_MAKE_TAG( 'g', 'u', 'r', 'u' ), 1 }, +// Gujarati, + { FT_MAKE_TAG( 'g', 'u', 'j', 'r' ), 1 }, +// Oriya, + { FT_MAKE_TAG( 'o', 'r', 'y', 'a' ), 1 }, +// Tamil, + { FT_MAKE_TAG( 't', 'a', 'm', 'l' ), 1 }, +// Telugu, + { FT_MAKE_TAG( 't', 'e', 'l', 'u' ), 1 }, +// Kannada, + { FT_MAKE_TAG( 'k', 'n', 'd', 'a' ), 1 }, +// Malayalam, + { FT_MAKE_TAG( 'm', 'l', 'y', 'm' ), 1 }, +// Sinhala, + // ### could not find any OT specs on this + { FT_MAKE_TAG( 's', 'i', 'n', 'h' ), 1 }, +// Thai, + { FT_MAKE_TAG( 't', 'h', 'a', 'i' ), 1 }, +// Lao, + { FT_MAKE_TAG( 'l', 'a', 'o', ' ' ), 1 }, +// Tibetan, + { FT_MAKE_TAG( 't', 'i', 'b', 't' ), 1 }, +// Myanmar, + { FT_MAKE_TAG( 'm', 'y', 'm', 'r' ), 1 }, +// Khmer, + { FT_MAKE_TAG( 'k', 'h', 'm', 'r' ), 1 }, + +// // East Asian Scripts +// Han, + { FT_MAKE_TAG( 'h', 'a', 'n', 'i' ), 0 }, +// Hiragana, + { FT_MAKE_TAG( 'k', 'a', 'n', 'a' ), 0 }, +// Katakana, + { FT_MAKE_TAG( 'k', 'a', 'n', 'a' ), 0 }, +// Hangul, + { FT_MAKE_TAG( 'h', 'a', 'n', 'g' ), 1 }, +// Bopomofo, + { FT_MAKE_TAG( 'b', 'o', 'p', 'o' ), 0 }, +// Yi, + { FT_MAKE_TAG( 'y', 'i', ' ', ' ' ), 0 }, + +// // Additional Scripts +// Ethiopic, + { FT_MAKE_TAG( 'e', 't', 'h', 'i' ), 0 }, +// Cherokee, + { FT_MAKE_TAG( 'c', 'h', 'e', 'r' ), 0 }, +// CanadianAboriginal, + { FT_MAKE_TAG( 'c', 'a', 'n', 's' ), 0 }, +// Mongolian, + { FT_MAKE_TAG( 'm', 'o', 'n', 'g' ), 0 }, +// // Symbols +// CurrencySymbols, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, +// LetterlikeSymbols, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, +// NumberForms, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, +// MathematicalOperators, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, +// TechnicalSymbols, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, +// GeometricSymbols, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, +// MiscellaneousSymbols, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, +// EnclosedAndSquare, + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, +// Braille, + { FT_MAKE_TAG( 'b', 'r', 'a', 'i' ), 0 }, +// Unicode, should be used + { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 } + // ### where are these? +// { FT_MAKE_TAG( 'b', 'y', 'z', 'm' ), 0 }, +// { FT_MAKE_TAG( 'D', 'F', 'L', 'T' ), 0 }, + // ### Hangul Jamo +// { FT_MAKE_TAG( 'j', 'a', 'm', 'o' ), 0 }, +}; + +TQOpenType::TQOpenType(TQFontEngineXft *fe) + : fontEngine(fe), gdef(0), gsub(0), gpos(0), current_script(0) +{ + face = fe->face(); + otl_buffer_new(face->memory, &otl_buffer); + tmpAttributes = 0; + tmpLogClusters = 0; + + FT_Error error; + if ((error = TT_Load_GDEF_Table(face, &gdef))) { +#ifdef OT_DEBUG + qDebug("error loading gdef table: %d", error); +#endif + gdef = 0; + } + + if ((error = TT_Load_GSUB_Table(face, &gsub, gdef))) { + gsub = 0; +#ifdef OT_DEBUG + if (error != FT_Err_Table_Missing) { + qDebug("error loading gsub table: %d", error); + } else { + qDebug("face doesn't have a gsub table"); + } +#endif + } + + if ((error = TT_Load_GPOS_Table(face, &gpos, gdef))) { + gpos = 0; +#ifdef OT_DEBUG + qDebug("error loading gpos table: %d", error); +#endif + } + + for (uint i = 0; i < TQFont::NScripts; ++i) + supported_scripts[i] = checkScript(i); +} + +TQOpenType::~TQOpenType() +{ + if (gpos) + TT_Done_GPOS_Table(gpos); + if (gsub) + TT_Done_GSUB_Table(gsub); + if (gdef) + TT_Done_GDEF_Table(gdef); + if (otl_buffer) + otl_buffer_free(otl_buffer); + if (tmpAttributes) + free(tmpAttributes); + if (tmpLogClusters) + free(tmpLogClusters); +} + +bool TQOpenType::checkScript(unsigned int script) +{ + assert(script < TQFont::NScripts); + + uint tag = ot_scripts[script].tag; + int retquirements = ot_scripts[script].flags; + + if (retquirements & RetquiresGsub) { + if (!gsub) + return FALSE; + + FT_UShort script_index; + FT_Error error = TT_GSUB_Select_Script(gsub, tag, &script_index); + if (error) { +#ifdef OT_DEBUG + qDebug("could not select script %d in GSub table: %d", (int)script, error); +#endif + return FALSE; + } + } + + if (retquirements & RetquiresGpos) { + if (!gpos) + return FALSE; + + FT_UShort script_index; + FT_Error error = TT_GPOS_Select_Script(gpos, script, &script_index); + if (error) { +#ifdef OT_DEBUG + qDebug("could not select script in gpos table: %d", error); +#endif + return FALSE; + } + + } + return TRUE; +} + + +void TQOpenType::selectScript(unsigned int script, const Features *features) +{ + if (current_script == script) + return; + + assert(script < TQFont::NScripts); + // find script in our list of supported scripts. + uint tag = ot_scripts[script].tag; + + if (gsub && features) { +#ifdef OT_DEBUG + { + TTO_FeatureList featurelist = gsub->FeatureList; + int numfeatures = featurelist.FeatureCount; + qDebug("gsub table has %d features", numfeatures); + for(int i = 0; i < numfeatures; i++) { + TTO_FeatureRecord *r = featurelist.FeatureRecord + i; + qDebug(" feature '%s'", tag_to_string(r->FeatureTag)); + } + } +#endif + TT_GSUB_Clear_Features(gsub); + FT_UShort script_index; + FT_Error error = TT_GSUB_Select_Script(gsub, tag, &script_index); + if (!error) { +#ifdef OT_DEBUG + qDebug("script %s has script index %d", tag_to_string(script), script_index); +#endif + while (features->tag) { + FT_UShort feature_index; + error = TT_GSUB_Select_Feature(gsub, features->tag, script_index, 0xffff, &feature_index); + if (!error) { +#ifdef OT_DEBUG + qDebug(" adding feature %s", tag_to_string(features->tag)); +#endif + TT_GSUB_Add_Feature(gsub, feature_index, features->property); + } + ++features; + } + } + } + + if (gpos) { + TT_GPOS_Clear_Features(gpos); + FT_UShort script_index; + FT_Error error = TT_GPOS_Select_Script(gpos, tag, &script_index); + if (!error) { +#ifdef OT_DEBUG + { + TTO_FeatureList featurelist = gpos->FeatureList; + int numfeatures = featurelist.FeatureCount; + qDebug("gpos table has %d features", numfeatures); + for(int i = 0; i < numfeatures; i++) { + TTO_FeatureRecord *r = featurelist.FeatureRecord + i; + FT_UShort feature_index; + TT_GPOS_Select_Feature(gpos, r->FeatureTag, script_index, 0xffff, &feature_index); + qDebug(" feature '%s'", tag_to_string(r->FeatureTag)); + } + } +#endif + FT_ULong *feature_tag_list; + error = TT_GPOS_Query_Features(gpos, script_index, 0xffff, &feature_tag_list); + if (!error) { + while (*feature_tag_list) { + FT_UShort feature_index; + error = TT_GPOS_Select_Feature(gpos, *feature_tag_list, script_index, 0xffff, &feature_index); + if (!error) + TT_GPOS_Add_Feature(gpos, feature_index, PositioningProperties); + ++feature_tag_list; + } + } + } + } + + current_script = script; +} + +#ifdef OT_DEBUG +static void dump_string(OTL_Buffer buffer) +{ + for (uint i = 0; i < buffer->in_length; ++i) { + qDebug(" %x: cluster=%d", buffer->in_string[i].gindex, buffer->in_string[i].cluster); + } +} +#endif + +extern void qt_heuristicPosition(TQShaperItem *item); + +bool TQOpenType::shape(TQShaperItem *item, const unsigned int *properties) +{ + length = item->num_glyphs; + + otl_buffer_clear(otl_buffer); + + tmpAttributes = (GlyphAttributes *) realloc(tmpAttributes, length*sizeof(GlyphAttributes)); + tmpLogClusters = (unsigned int *) realloc(tmpLogClusters, length*sizeof(unsigned int)); + for (int i = 0; i < length; ++i) { + otl_buffer_add_glyph(otl_buffer, item->glyphs[i], properties ? properties[i] : 0, i); + tmpAttributes[i] = item->attributes[i]; + tmpLogClusters[i] = item->log_clusters[i]; + } + +#ifdef OT_DEBUG + qDebug("-----------------------------------------"); +// qDebug("log clusters before shaping:"); +// for (int j = 0; j < length; j++) +// qDebug(" log[%d] = %d", j, item->log_clusters[j]); + qDebug("original glyphs: %p", item->glyphs); + for (int i = 0; i < length; ++i) + qDebug(" glyph=%4x", otl_buffer->in_string[i].gindex); +// dump_string(otl_buffer); +#endif + + loadFlags = FT_LOAD_DEFAULT; + + if (gsub) { + uint error = TT_GSUB_Apply_String(gsub, otl_buffer); + if (error && error != TTO_Err_Not_Covered) + return false; + } + +#ifdef OT_DEBUG +// qDebug("log clusters before shaping:"); +// for (int j = 0; j < length; j++) +// qDebug(" log[%d] = %d", j, item->log_clusters[j]); + qDebug("shaped glyphs:"); + for (int i = 0; i < length; ++i) + qDebug(" glyph=%4x", otl_buffer->in_string[i].gindex); + qDebug("-----------------------------------------"); +// dump_string(otl_buffer); +#endif + + return true; +} + +bool TQOpenType::positionAndAdd(TQShaperItem *item, bool doLogClusters) +{ + if (gpos) { +#ifdef Q_WS_X11 + Q_ASSERT(fontEngine->type() == TQFontEngine::Xft); + face = lockFTFace(static_cast<TQFontEngineXft *>(fontEngine)->font()); +#endif + memset(otl_buffer->positions, 0, otl_buffer->in_length*sizeof(OTL_PositionRec)); + // #### check that passing "FALSE,FALSE" is correct + TT_GPOS_Apply_String(face, gpos, loadFlags, otl_buffer, FALSE, FALSE); +#ifdef Q_WS_X11 + unlockFTFace(static_cast<TQFontEngineXft *>(fontEngine)->font()); +#endif + } + + // make sure we have enough space to write everything back + if (item->num_glyphs < (int)otl_buffer->in_length) { + item->num_glyphs = otl_buffer->in_length; + return FALSE; + } + + for (unsigned int i = 0; i < otl_buffer->in_length; ++i) { + item->glyphs[i] = otl_buffer->in_string[i].gindex; + item->attributes[i] = tmpAttributes[otl_buffer->in_string[i].cluster]; + if (i && otl_buffer->in_string[i].cluster == otl_buffer->in_string[i-1].cluster) + item->attributes[i].clusterStart = FALSE; + } + item->num_glyphs = otl_buffer->in_length; + + if (doLogClusters) { + // we can't do this for indic, as we pass the stuf in syllables and it's easier to do it in the shaper. + unsigned short *logClusters = item->log_clusters; + int clusterStart = 0; + int oldCi = 0; + for (unsigned int i = 0; i < otl_buffer->in_length; ++i) { + int ci = otl_buffer->in_string[i].cluster; + // qDebug(" ci[%d] = %d mark=%d, cmb=%d, cs=%d", + // i, ci, glyphAttributes[i].mark, glyphAttributes[i].combiningClass, glyphAttributes[i].clusterStart); + if (!item->attributes[i].mark && item->attributes[i].clusterStart && ci != oldCi) { + for (int j = oldCi; j < ci; j++) + logClusters[j] = clusterStart; + clusterStart = i; + oldCi = ci; + } + } + for (int j = oldCi; j < length; j++) + logClusters[j] = clusterStart; + } + + // calulate the advances for the shaped glyphs +// qDebug("unpositioned: "); + static_cast<TQFontEngineXft *>(item->font)->recalcAdvances(item->num_glyphs, item->glyphs, item->advances); + + // positioning code: + if (gpos) { + float scale = item->font->scale(); + OTL_Position positions = otl_buffer->positions; + +// qDebug("positioned glyphs:"); + for (unsigned int i = 0; i < otl_buffer->in_length; i++) { +// qDebug(" %d:\t orig advance: (%d/%d)\tadv=(%d/%d)\tpos=(%d/%d)\tback=%d\tnew_advance=%d", i, +// glyphs[i].advance.x.toInt(), glyphs[i].advance.y.toInt(), +// (int)(positions[i].x_advance >> 6), (int)(positions[i].y_advance >> 6), +// (int)(positions[i].x_pos >> 6), (int)(positions[i].y_pos >> 6), +// positions[i].back, positions[i].new_advance); + // ###### fix the case where we have y advances. How do we handle this in Uniscribe????? + if (positions[i].new_advance) { + item->advances[i] = item->flags & TQTextEngine::RightToLeft + ? -qRound((positions[i].x_advance >> 6)*scale) + : qRound((positions[i].x_advance >> 6)*scale); + } else { + item->advances[i] += item->flags & TQTextEngine::RightToLeft + ? -qRound((positions[i].x_advance >> 6)*scale) + : qRound((positions[i].x_advance >> 6)*scale); + } + item->offsets[i].x = qRound((positions[i].x_pos >> 6)*scale); + item->offsets[i].y = -qRound((positions[i].y_pos >> 6)*scale); + int back = positions[i].back; + if (item->flags & TQTextEngine::RightToLeft) { + while (back--) { + item->offsets[i].x -= item->advances[i-back]; + } + } else { + while (back) { + item->offsets[i].x -= item->advances[i-back]; + --back; + } + } +// qDebug(" ->\tadv=%d\tpos=(%d/%d)", +// glyphs[i].advance.x.toInt(), glyphs[i].offset.x.toInt(), glyphs[i].offset.y.toInt()); + } + item->has_positioning = TRUE; + } else { + qt_heuristicPosition(item); + } + +#ifdef OT_DEBUG +// if (doLogClusters) { +// qDebug("log clusters after shaping:"); +// for (int j = 0; j < length; j++) +// qDebug(" log[%d] = %d", j, item->log_clusters[j]); +// } + qDebug("final glyphs:"); + for (int i = 0; i < (int)otl_buffer->in_length; ++i) + qDebug(" glyph=%4x char_index=%d mark: %d cmp: %d, clusterStart: %d advance=%d offset=%d/%d", + item->glyphs[i], otl_buffer->in_string[i].cluster, item->attributes[i].mark, + item->attributes[i].combiningClass, item->attributes[i].clusterStart, + item->advances[i], + item->offsets[i].x, item->offsets[i].y); + qDebug("-----------------------------------------"); +#endif + return TRUE; +} + +#endif |