void CFont::RecalculateMetrics( XftFont* font ) { FT_Face face = XftLockFace( font ); if( !face ) return; if( face->face_flags & FT_FACE_FLAG_SCALABLE ) { FT_Fixed x_scale = face->size->metrics.x_scale; FT_Fixed y_scale = face->size->metrics.y_scale; FT_Pos asc = FT_MulFix( face->ascender, y_scale ); FT_Pos des = -FT_MulFix( face->descender, y_scale ); FT_Pos adv = FT_MulFix( face->max_advance_width, x_scale ); adv = ( adv + 32 ) >> 6; if( m_Compact ) { /* ceil unless the fractional part < 0.0625 */ font->height = ( asc + des + 60 ) >> 6; font->ascent = ( asc + 32 ) >> 6; font->descent = font->height - font->ascent; font->max_advance_width = adv; } else {
static Lisp_Object xftfont_shape (Lisp_Object lgstring) { struct font *font = CHECK_FONT_GET_OBJECT (LGSTRING_FONT (lgstring)); struct xftfont_info *xftfont_info = (struct xftfont_info *) font; FT_Face ft_face; Lisp_Object val; ft_face = XftLockFace (xftfont_info->xftfont); xftfont_info->ft_size = ft_face->size; val = ftfont_driver.shape (lgstring); XftUnlockFace (xftfont_info->xftfont); return val; }
static int _xft_Load(TextState * ts, const char *name) { XftFont *font; FontCtxXft *fdc; if (name[0] == '-') font = XftFontOpenXlfd(disp, Dpy.screen, name); else font = XftFontOpenName(disp, Dpy.screen, name); if (!font) return -1; #if 0 /* Debug */ { FT_Face ftf = XftLockFace(font); if (ftf == NULL) return -1; Eprintf("Font %s family_name=%s style_name=%s\n", name, ftf->family_name, ftf->style_name); XftUnlockFace(font); } #endif fdc = EMALLOC(FontCtxXft, 1); if (!fdc) return -1; fdc->font = font; ts->fdc = fdc; ts->need_utf8 = 1; ts->type = FONT_TYPE_XFT; ts->ops = &FontOps_xft; return 0; }
/*! \internal This is basically a substitute for glxUseXFont() which can only handle XLFD fonts. This version relies on XFT v2 to render the glyphs, but it works with all fonts that XFT2 provides - both antialiased and aliased bitmap and outline fonts. */ void qgl_use_font(QFontEngineXft *engine, int first, int count, int listBase) { GLfloat color[4]; glGetFloatv(GL_CURRENT_COLOR, color); // save the pixel unpack state GLint gl_swapbytes, gl_lsbfirst, gl_rowlength, gl_skiprows, gl_skippixels, gl_alignment; glGetIntegerv (GL_UNPACK_SWAP_BYTES, &gl_swapbytes); glGetIntegerv (GL_UNPACK_LSB_FIRST, &gl_lsbfirst); glGetIntegerv (GL_UNPACK_ROW_LENGTH, &gl_rowlength); glGetIntegerv (GL_UNPACK_SKIP_ROWS, &gl_skiprows); glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &gl_skippixels); glGetIntegerv (GL_UNPACK_ALIGNMENT, &gl_alignment); glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE); glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE); glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); glPixelStorei(GL_UNPACK_ALIGNMENT, 1); Bool antialiased = False; #if 0 // disable antialias support for now XftPatternGetBool(engine->pattern(), XFT_ANTIALIAS, 0, &antialiased); #endif #ifdef QT_XFT2 FT_Face face = XftLockFace(engine->font()); #else FT_Face face = engine->face(); #endif // start generating font glyphs for (int i = first; i < count; ++i) { int list = listBase + i; GLfloat x0, y0, dx, dy; FT_Error err; err = FT_Load_Glyph(face, FT_Get_Char_Index(face, i), FT_LOAD_DEFAULT); if (err) { qDebug("failed loading glyph %d from font", i); Q_ASSERT(!err); } err = FT_Render_Glyph(face->glyph, (antialiased ? ft_render_mode_normal : ft_render_mode_mono)); if (err) { qDebug("failed rendering glyph %d from font", i); Q_ASSERT(!err); } FT_Bitmap bm = face->glyph->bitmap; x0 = face->glyph->metrics.horiBearingX >> 6; y0 = (face->glyph->metrics.height - face->glyph->metrics.horiBearingY) >> 6; dx = face->glyph->metrics.horiAdvance >> 6; dy = 0; int sz = bm.pitch * bm.rows; uint *aa_glyph = 0; uchar *ua_glyph = 0; if (antialiased) aa_glyph = new uint[sz]; else ua_glyph = new uchar[sz]; // convert to GL format for (int y = 0; y < bm.rows; ++y) { for (int x = 0; x < bm.pitch; ++x) { int c1 = y*bm.pitch + x; int c2 = (bm.rows - y - 1) > 0 ? (bm.rows-y-1)*bm.pitch + x : x; if (antialiased) { aa_glyph[c1] = (int(color[0]*255) << 24) | (int(color[1]*255) << 16) | (int(color[2]*255) << 8) | bm.buffer[c2]; } else { ua_glyph[c1] = bm.buffer[c2]; } } } glNewList(list, GL_COMPILE); if (antialiased) { // calling glBitmap() is just a trick to move the current // raster pos, since glGet*() won't work in display lists glBitmap(0, 0, 0, 0, x0, -y0, 0); glDrawPixels(bm.pitch, bm.rows, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, aa_glyph); glBitmap(0, 0, 0, 0, dx-x0, y0, 0); } else { glBitmap(bm.pitch*8, bm.rows, -x0, y0, dx, dy, ua_glyph); } glEndList(); antialiased ? delete[] aa_glyph : delete[] ua_glyph; } #ifdef QT_XFT2 XftUnlockFace(engine->font()); #endif // restore pixel unpack settings glPixelStorei(GL_UNPACK_SWAP_BYTES, gl_swapbytes); glPixelStorei(GL_UNPACK_LSB_FIRST, gl_lsbfirst); glPixelStorei(GL_UNPACK_ROW_LENGTH, gl_rowlength); glPixelStorei(GL_UNPACK_SKIP_ROWS, gl_skiprows); glPixelStorei(GL_UNPACK_SKIP_PIXELS, gl_skippixels); glPixelStorei(GL_UNPACK_ALIGNMENT, gl_alignment); }
static Lisp_Object xftfont_open (struct frame *f, Lisp_Object entity, int pixel_size) { FcResult result; Display *display = FRAME_X_DISPLAY (f); Lisp_Object val, filename, idx, font_object; FcPattern *pat = NULL, *match; struct xftfont_info *xftfont_info = NULL; struct font *font; double size = 0; XftFont *xftfont = NULL; int spacing; char name[256]; int len, i; XGlyphInfo extents; FT_Face ft_face; FcMatrix *matrix; val = assq_no_quit (QCfont_entity, AREF (entity, FONT_EXTRA_INDEX)); if (! CONSP (val)) return Qnil; val = XCDR (val); filename = XCAR (val); idx = XCDR (val); size = XINT (AREF (entity, FONT_SIZE_INDEX)); if (size == 0) size = pixel_size; pat = FcPatternCreate (); FcPatternAddInteger (pat, FC_WEIGHT, FONT_WEIGHT_NUMERIC (entity)); i = FONT_SLANT_NUMERIC (entity) - 100; if (i < 0) i = 0; FcPatternAddInteger (pat, FC_SLANT, i); FcPatternAddInteger (pat, FC_WIDTH, FONT_WIDTH_NUMERIC (entity)); FcPatternAddDouble (pat, FC_PIXEL_SIZE, pixel_size); val = AREF (entity, FONT_FAMILY_INDEX); if (! NILP (val)) FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); val = AREF (entity, FONT_FOUNDRY_INDEX); if (! NILP (val)) FcPatternAddString (pat, FC_FOUNDRY, (FcChar8 *) SDATA (SYMBOL_NAME (val))); val = AREF (entity, FONT_SPACING_INDEX); if (! NILP (val)) FcPatternAddInteger (pat, FC_SPACING, XINT (val)); val = AREF (entity, FONT_DPI_INDEX); if (! NILP (val)) { double dbl = XINT (val); FcPatternAddDouble (pat, FC_DPI, dbl); } val = AREF (entity, FONT_AVGWIDTH_INDEX); if (INTEGERP (val) && XINT (val) == 0) FcPatternAddBool (pat, FC_SCALABLE, FcTrue); /* This is necessary to identify the exact font (e.g. 10x20.pcf.gz over 10x20-ISO8859-1.pcf.gz). */ FcPatternAddCharSet (pat, FC_CHARSET, ftfont_get_fc_charset (entity)); xftfont_add_rendering_parameters (pat, entity); FcPatternAddString (pat, FC_FILE, (FcChar8 *) SDATA (filename)); FcPatternAddInteger (pat, FC_INDEX, XINT (idx)); block_input (); /* Make sure that the Xrender extension is added before the Xft one. Otherwise, the close-display hook set by Xft is called after the one for Xrender, and the former tries to re-add the latter. This results in inconsistency of internal states and leads to X protocol error when one reconnects to the same X server. (Bug#1696) */ { int event_base, error_base; XRenderQueryExtension (display, &event_base, &error_base); } /* Substitute in values from X resources and XftDefaultSet. */ XftDefaultSubstitute (display, FRAME_X_SCREEN_NUMBER (f), pat); match = XftFontMatch (display, FRAME_X_SCREEN_NUMBER (f), pat, &result); xftfont_fix_match (pat, match); FcPatternDestroy (pat); xftfont = XftFontOpenPattern (display, match); if (!xftfont) { unblock_input (); XftPatternDestroy (match); return Qnil; } ft_face = XftLockFace (xftfont); unblock_input (); /* We should not destroy PAT here because it is kept in XFTFONT and destroyed automatically when XFTFONT is closed. */ font_object = font_make_object (VECSIZE (struct xftfont_info), entity, size); ASET (font_object, FONT_TYPE_INDEX, Qxft); len = font_unparse_xlfd (entity, size, name, 256); if (len > 0) ASET (font_object, FONT_NAME_INDEX, make_string (name, len)); len = font_unparse_fcname (entity, size, name, 256); if (len > 0) ASET (font_object, FONT_FULLNAME_INDEX, make_string (name, len)); else ASET (font_object, FONT_FULLNAME_INDEX, AREF (font_object, FONT_NAME_INDEX)); ASET (font_object, FONT_FILE_INDEX, filename); ASET (font_object, FONT_FORMAT_INDEX, ftfont_font_format (xftfont->pattern, filename)); font = XFONT_OBJECT (font_object); font->pixel_size = size; font->driver = &xftfont_driver; font->encoding_charset = font->repertory_charset = -1; xftfont_info = (struct xftfont_info *) font; xftfont_info->display = display; xftfont_info->xftfont = xftfont; /* This means that there's no need of transformation. */ xftfont_info->matrix.xx = 0; if (FcPatternGetMatrix (xftfont->pattern, FC_MATRIX, 0, &matrix) == FcResultMatch) { xftfont_info->matrix.xx = 0x10000L * matrix->xx; xftfont_info->matrix.yy = 0x10000L * matrix->yy; xftfont_info->matrix.xy = 0x10000L * matrix->xy; xftfont_info->matrix.yx = 0x10000L * matrix->yx; } if (INTEGERP (AREF (entity, FONT_SPACING_INDEX))) spacing = XINT (AREF (entity, FONT_SPACING_INDEX)); else spacing = FC_PROPORTIONAL; if (! ascii_printable[0]) { int ch; for (ch = 0; ch < 95; ch++) ascii_printable[ch] = ' ' + ch; } block_input (); /* Unfortunately Xft doesn't provide a way to get minimum char width. So, we set min_width to space_width. */ if (spacing != FC_PROPORTIONAL #ifdef FC_DUAL && spacing != FC_DUAL #endif /* FC_DUAL */ ) { font->min_width = font->max_width = font->average_width = font->space_width = xftfont->max_advance_width; XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); } else { XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents); font->min_width = font->max_width = font->space_width = extents.xOff; if (font->space_width <= 0) /* dirty workaround */ font->space_width = pixel_size; XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents); font->average_width = (font->space_width + extents.xOff) / 95; } unblock_input (); font->ascent = xftfont->ascent; font->descent = xftfont->descent; if (pixel_size >= 5) { /* The above condition is a dirty workaround because XftTextExtents8 behaves strangely for some fonts (e.g. "Dejavu Sans Mono") when pixel_size is less than 5. */ if (font->ascent < extents.y) font->ascent = extents.y; if (font->descent < extents.height - extents.y) font->descent = extents.height - extents.y; } font->height = font->ascent + font->descent; if (XINT (AREF (entity, FONT_SIZE_INDEX)) == 0) { int upEM = ft_face->units_per_EM; font->underline_position = -ft_face->underline_position * size / upEM; font->underline_thickness = ft_face->underline_thickness * size / upEM; if (font->underline_thickness > 2) font->underline_position -= font->underline_thickness / 2; } else { font->underline_position = -1; font->underline_thickness = 0; } #ifdef HAVE_LIBOTF xftfont_info->maybe_otf = (ft_face->face_flags & FT_FACE_FLAG_SFNT) != 0; xftfont_info->otf = NULL; #endif /* HAVE_LIBOTF */ xftfont_info->ft_size = ft_face->size; font->baseline_offset = 0; font->relative_compose = 0; font->default_ascent = 0; font->vertical_centering = 0; #ifdef FT_BDF_H if (! (ft_face->face_flags & FT_FACE_FLAG_SFNT)) { BDF_PropertyRec rec; if (FT_Get_BDF_Property (ft_face, "_MULE_BASELINE_OFFSET", &rec) == 0 && rec.type == BDF_PROPERTY_TYPE_INTEGER) font->baseline_offset = rec.u.integer; if (FT_Get_BDF_Property (ft_face, "_MULE_RELATIVE_COMPOSE", &rec) == 0 && rec.type == BDF_PROPERTY_TYPE_INTEGER) font->relative_compose = rec.u.integer; if (FT_Get_BDF_Property (ft_face, "_MULE_DEFAULT_ASCENT", &rec) == 0 && rec.type == BDF_PROPERTY_TYPE_INTEGER) font->default_ascent = rec.u.integer; } #endif return font_object; }