static UnixFtFont * InitFont( Tk_Window tkwin, FcPattern *pattern, UnixFtFont *fontPtr) { FcFontSet *set; FcCharSet *charset; FcResult result; XftFont *ftFont; int i; if (!fontPtr) { fontPtr = (UnixFtFont *) ckalloc(sizeof(UnixFtFont)); } FcConfigSubstitute(0, pattern, FcMatchPattern); XftDefaultSubstitute(Tk_Display(tkwin), Tk_ScreenNumber(tkwin), pattern); /* * Generate the list of fonts */ set = FcFontSort(0, pattern, FcTrue, NULL, &result); if (!set) { FcPatternDestroy(pattern); ckfree((char *)fontPtr); return NULL; } fontPtr->fontset = set; fontPtr->pattern = pattern; fontPtr->faces = (UnixFtFace *) ckalloc(set->nfont * sizeof(UnixFtFace)); fontPtr->nfaces = set->nfont; /* * Fill in information about each returned font */ for (i = 0; i < set->nfont; i++) { fontPtr->faces[i].ftFont = 0; fontPtr->faces[i].source = set->fonts[i]; if (FcPatternGetCharSet(set->fonts[i], FC_CHARSET, 0, &charset) == FcResultMatch) { fontPtr->faces[i].charset = FcCharSetCopy(charset); } else { fontPtr->faces[i].charset = 0; } } fontPtr->display = Tk_Display(tkwin); fontPtr->screen = Tk_ScreenNumber(tkwin); fontPtr->ftDraw = 0; fontPtr->color.color.red = 0; fontPtr->color.color.green = 0; fontPtr->color.color.blue = 0; fontPtr->color.color.alpha = 0xffff; fontPtr->color.pixel = 0xffffffff; /* * Fill in platform-specific fields of TkFont. */ ftFont = GetFont(fontPtr, 0); fontPtr->font.fid = XLoadFont(Tk_Display(tkwin), "fixed"); GetTkFontAttributes(ftFont, &fontPtr->font.fa); GetTkFontMetrics(ftFont, &fontPtr->font.fm); return fontPtr; }
static GdkPixmap * create_text_pixmap(GtkWidget *drawing_area, FT_Face face) { gint i, pixmap_width, pixmap_height, pos_y, textlen; GdkPixmap *pixmap = NULL; const gchar *text; Display *xdisplay; Drawable xdrawable; Visual *xvisual; Colormap xcolormap; XftDraw *draw; XftColor colour; XGlyphInfo extents; XftFont *font; gint *sizes = NULL, n_sizes, alpha_size; FcCharSet *charset = NULL; cairo_t *cr; GdkWindow *window = gtk_widget_get_window (drawing_area); text = pango_language_get_sample_string(NULL); if (! check_font_contain_text (face, text)) { pango_language_get_sample_string (pango_language_from_string ("en_US")); } textlen = strlen(text); /* create the XftDraw */ xdisplay = GDK_PIXMAP_XDISPLAY(window); #if GTK_CHECK_VERSION(3, 0, 0) xvisual = GDK_VISUAL_XVISUAL(gdk_window_get_visual(window)); #else xvisual = GDK_VISUAL_XVISUAL(gdk_drawable_get_visual(window)); #endif xcolormap = GDK_COLORMAP_XCOLORMAP(gdk_drawable_get_colormap(window)); XftColorAllocName(xdisplay, xvisual, xcolormap, "black", &colour); /* work out what sizes to render */ if (FT_IS_SCALABLE(face)) { n_sizes = 8; sizes = g_new(gint, n_sizes); sizes[0] = 8; sizes[1] = 10; sizes[2] = 12; sizes[3] = 18; sizes[4] = 24; sizes[5] = 36; sizes[6] = 48; sizes[7] = 72; alpha_size = 24; } else { /* use fixed sizes */ n_sizes = face->num_fixed_sizes; sizes = g_new(gint, n_sizes); alpha_size = 0; for (i = 0; i < face->num_fixed_sizes; i++) { sizes[i] = face->available_sizes[i].height; /* work out which font size to render */ if (face->available_sizes[i].height <= 24) alpha_size = face->available_sizes[i].height; } } /* calculate size of pixmap to use (with 4 pixels padding) ... */ pixmap_width = 8; pixmap_height = 8; font = get_font(xdisplay, face, alpha_size, charset); charset = FcCharSetCopy (font->charset); XftTextExtentsUtf8(xdisplay, font, (guchar *)lowercase_text, strlen(lowercase_text), &extents); pixmap_height += extents.height + 4; pixmap_width = MAX(pixmap_width, 8 + extents.width); XftTextExtentsUtf8(xdisplay, font, (guchar *)uppercase_text, strlen(uppercase_text), &extents); pixmap_height += extents.height + 4; pixmap_width = MAX(pixmap_width, 8 + extents.width); XftTextExtentsUtf8(xdisplay, font, (guchar *)punctuation_text, strlen(punctuation_text), &extents); pixmap_height += extents.height + 4; pixmap_width = MAX(pixmap_width, 8 + extents.width); XftFontClose(xdisplay, font); pixmap_height += 8; for (i = 0; i < n_sizes; i++) { font = get_font(xdisplay, face, sizes[i], charset); if (!font) continue; XftTextExtentsUtf8(xdisplay, font, (guchar *)text, textlen, &extents); pixmap_height += extents.height + 4; pixmap_width = MAX(pixmap_width, 8 + extents.width); XftFontClose(xdisplay, font); } /* create pixmap */ gtk_widget_set_size_request(drawing_area, pixmap_width, pixmap_height); pixmap = gdk_pixmap_new(window, pixmap_width, pixmap_height, -1); if (!pixmap) goto end; cr = gdk_cairo_create (pixmap); cairo_set_source_rgb (cr, 1, 1, 1); cairo_paint (cr); cairo_destroy (cr); xdrawable = GDK_DRAWABLE_XID(pixmap); draw = XftDrawCreate(xdisplay, xdrawable, xvisual, xcolormap); /* draw text */ pos_y = 4; font = get_font(xdisplay, face, alpha_size, charset); draw_string(xdisplay, draw, font, &colour, lowercase_text, &pos_y); draw_string(xdisplay, draw, font, &colour, uppercase_text, &pos_y); draw_string(xdisplay, draw, font, &colour, punctuation_text, &pos_y); XftFontClose(xdisplay, font); pos_y += 8; for (i = 0; i < n_sizes; i++) { font = get_font(xdisplay, face, sizes[i], charset); if (!font) continue; draw_string(xdisplay, draw, font, &colour, text, &pos_y); XftFontClose(xdisplay, font); } g_signal_connect(drawing_area, "expose-event", G_CALLBACK(expose_event), pixmap); end: g_free(sizes); FcCharSetDestroy (charset); return pixmap; }
static UnixFtFont * InitFont( Tk_Window tkwin, FcPattern *pattern, UnixFtFont *fontPtr) { FcFontSet *set; FcCharSet *charset; FcResult result; XftFont *ftFont; int i, iWidth; if (!fontPtr) { fontPtr = ckalloc(sizeof(UnixFtFont)); } FcConfigSubstitute(0, pattern, FcMatchPattern); XftDefaultSubstitute(Tk_Display(tkwin), Tk_ScreenNumber(tkwin), pattern); /* * Generate the list of fonts */ set = FcFontSort(0, pattern, FcTrue, NULL, &result); if (!set) { ckfree(fontPtr); return NULL; } fontPtr->fontset = set; fontPtr->pattern = pattern; fontPtr->faces = ckalloc(set->nfont * sizeof(UnixFtFace)); fontPtr->nfaces = set->nfont; /* * Fill in information about each returned font */ for (i = 0; i < set->nfont; i++) { fontPtr->faces[i].ftFont = 0; fontPtr->faces[i].ft0Font = 0; fontPtr->faces[i].source = set->fonts[i]; if (FcPatternGetCharSet(set->fonts[i], FC_CHARSET, 0, &charset) == FcResultMatch) { fontPtr->faces[i].charset = FcCharSetCopy(charset); } else { fontPtr->faces[i].charset = 0; } fontPtr->faces[i].angle = 0.0; } fontPtr->display = Tk_Display(tkwin); fontPtr->screen = Tk_ScreenNumber(tkwin); fontPtr->ftDraw = 0; fontPtr->color.color.red = 0; fontPtr->color.color.green = 0; fontPtr->color.color.blue = 0; fontPtr->color.color.alpha = 0xffff; fontPtr->color.pixel = 0xffffffff; /* * Fill in platform-specific fields of TkFont. */ ftFont = GetFont(fontPtr, 0, 0.0); fontPtr->font.fid = XLoadFont(Tk_Display(tkwin), "fixed"); GetTkFontAttributes(ftFont, &fontPtr->font.fa); GetTkFontMetrics(ftFont, &fontPtr->font.fm); /* * Fontconfig can't report any information about the position or thickness * of underlines or overstrikes. Thus, we use some defaults that are * hacked around from backup defaults in tkUnixFont.c, which are in turn * based on recommendations in the X manual. The comments from that file * leading to these computations were: * * If the XA_UNDERLINE_POSITION property does not exist, the X manual * recommends using half the descent. * * If the XA_UNDERLINE_THICKNESS property does not exist, the X * manual recommends using the width of the stem on a capital letter. * I don't know of a way to get the stem width of a letter, so guess * and use 1/3 the width of a capital I. * * Note that nothing corresponding to *either* property is reported by * Fontconfig at all. [Bug 1961455] */ { TkFont *fPtr = &fontPtr->font; fPtr->underlinePos = fPtr->fm.descent / 2; Tk_MeasureChars((Tk_Font) fPtr, "I", 1, -1, 0, &iWidth); fPtr->underlineHeight = iWidth / 3; if (fPtr->underlineHeight == 0) { fPtr->underlineHeight = 1; } if (fPtr->underlineHeight + fPtr->underlinePos > fPtr->fm.descent) { fPtr->underlineHeight = fPtr->fm.descent - fPtr->underlinePos; if (fPtr->underlineHeight == 0) { fPtr->underlinePos--; fPtr->underlineHeight = 1; } } } return fontPtr; }