Diffstat (limited to 'freetype/fontfactoryttf_qws.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | freetype/fontfactoryttf_qws.cpp | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/freetype/fontfactoryttf_qws.cpp b/freetype/fontfactoryttf_qws.cpp new file mode 100644 index 0000000..66fd96a --- a/dev/null +++ b/freetype/fontfactoryttf_qws.cpp @@ -0,0 +1,238 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + + +#include "fontfactoryttf_qws.h" + +#ifdef QT_NO_FREETYPE + +#include "qfontdata_p.h" +#include <string.h> +#include <stdio.h> + +#define FLOOR(x) ((x) & -64) +#define CEIL(x) (((x)+63) & -64) +#define TRUNC(x) ((x) >> 6) + + +extern "C" { +#include <ft2build.h> +#include FT_FREETYPE_H +#include FT_GLYPH_H +#include FT_OUTLINE_H +#include FT_BBOX_H +} + +class QDiskFontFT : public QDiskFontPrivate { +public: + FT_Face face; +}; + +class QRenderedFontFT : public QRenderedFont { +public: + QRenderedFontFT(QDiskFont* f, const QFontDef &d) : + QRenderedFont(f,d) + { + QDiskFontFT *df = (QDiskFontFT*)(f->p); + myface=df->face; + selectThisSize(); + // A 1-pixel baseline is excluded in Qt/Windows/X11 fontmetrics + // (see QFontMetrics::height()) + // + fascent=CEIL(myface->size->metrics.ascender)/64; + fdescent=-FLOOR(myface->size->metrics.descender)/64-1; + fmaxwidth=CEIL(myface->size->metrics.max_advance)/64; + fleading=CEIL(myface->size->metrics.height)/64 + - fascent - fdescent + 1; + + // FT has these in font units + funderlinepos = ptsize/200+1; + funderlinewidth = ptsize/200+1; + } + + ~QRenderedFontFT() + { + } + + bool unicode(int & i) const + { + int ret; + + FT_Face theface=myface; + + ret=FT_Get_Char_Index(theface,i); + + if (ret==0) { + return FALSE; + } else { + i=ret; + return TRUE; + } + } + + bool inFont(QChar ch) const + { + int index = ch.unicode(); + return unicode(index); + } + + QGlyph render(QChar ch) + { + selectThisSize(); + + int index = ch.unicode(); + if ( !unicode(index) ) + index = 0; + QGlyph result; + + FT_Error err; + + err=FT_Load_Glyph(myface,index,FT_LOAD_DEFAULT); + if(err) + qFatal("Load glyph error %x",err); + + int width,height,pitch,size = 0; + FT_Glyph glyph; + err=FT_Get_Glyph( myface->glyph, &glyph ); + if(err) + qFatal("Get glyph error %x",err); + + FT_BBox bbox; + FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_gridfit, &bbox); + + FT_Vector origin; + origin.x = -bbox.xMin; + origin.y = -bbox.yMin; + + if ( FT_IS_SCALABLE(myface) ) { + err=FT_Glyph_To_Bitmap(&glyph, + smooth ? ft_render_mode_normal : ft_render_mode_mono, + &origin, 1); // destroy original glyph + if(err) + qWarning("Get bitmap error %d",err); + } + + if ( !err ) { + FT_Bitmap bm = ((FT_BitmapGlyph)glyph)->bitmap; + pitch = bm.pitch; + size=pitch*bm.rows; + result.data = new uchar[size]; // XXX memory manage me + width=bm.width; + height=bm.rows; + if ( size ) { + memcpy( result.data, bm.buffer, size ); + } else { + result.data = new uchar[0]; // XXX memory manage me + } + } else { + result.data = new uchar[0]; // XXX memory manage me + } + + result.metrics = new QGlyphMetrics; + memset((char*)result.metrics, 0, sizeof(QGlyphMetrics)); + result.metrics->bearingx=myface->glyph->metrics.horiBearingX/64; + result.metrics->advance=myface->glyph->metrics.horiAdvance/64; + result.metrics->bearingy=myface->glyph->metrics.horiBearingY/64; + + result.metrics->linestep=pitch; + result.metrics->width=width; + result.metrics->height=height; + + FT_Done_Glyph( glyph ); + + return result; + } + + FT_Face myface; + +private: + void selectThisSize() + { + int psize=(ptsize<<6)/10; + + // Assume 72 dpi for now + const int dpi=72; + FT_Error err; + err=FT_Set_Char_Size(myface, psize,psize,dpi,dpi); + if (err) { + if (FT_IS_SCALABLE(myface) ) { + qWarning("Set char size error %x for size %d",err,ptsize); + } else { + int best=-1; + int bdh=99; + for (int i=0; i<myface->num_fixed_sizes; i++) { + FT_Bitmap_Size& sz=myface->available_sizes[i]; + int dh = sz.height - ptsize*dpi/72/10; + dh = QABS(dh); + if ( dh < bdh ) { + bdh=dh; + best=i; + } + } + if ( best >= 0 ) + err=FT_Set_Pixel_Sizes(myface, + myface->available_sizes[best].width, + myface->available_sizes[best].height); + if ( err ) + qWarning("Set char size error %x for size %d",err,ptsize); + } + } + } +}; + +QFontFactoryFT::QFontFactoryFT() +{ + FT_Error err; + err=FT_Init_FreeType(&library); + if(err) { + qFatal("Couldn't initialise Freetype library"); + } +} + +QFontFactoryFT::~QFontFactoryFT() +{ +} + +QString QFontFactoryFT::name() +{ + return "FT"; +} + +QRenderedFont * QFontFactoryFT::get(const QFontDef & f,QDiskFont * f2) +{ + return new QRenderedFontFT(f2, f); +} + +void QFontFactoryFT::load(QDiskFont * qdf) const +{ + if(qdf->loaded) + return; + QDiskFontFT *f = new QDiskFontFT; + qdf->p=f; + FT_Error err; + err=FT_New_Face(library,qdf->file.ascii(),0,&(f->face)); + if(err) { + qFatal("Error %d opening face",err); + } + qdf->loaded=true; +} + + +#endif // QT_NO_FREETYPE |