1 9c611279 2012-10-21 rsc #include <u.h>
  2 9c611279 2012-10-21 rsc 
  3 9c611279 2012-10-21 rsc #include <fontconfig/fontconfig.h>
  4 9c611279 2012-10-21 rsc #include <ft2build.h>
  5 9c611279 2012-10-21 rsc #include FT_FREETYPE_H
  6 9c611279 2012-10-21 rsc 
  7 9c611279 2012-10-21 rsc #include <libc.h>
  8 9c611279 2012-10-21 rsc #include <draw.h>
  9 9c611279 2012-10-21 rsc #include <memdraw.h>
 10 9c611279 2012-10-21 rsc #include "a.h"
 11 9c611279 2012-10-21 rsc 
 12 9c611279 2012-10-21 rsc static FcConfig    *fc;
 13 9c611279 2012-10-21 rsc static FT_Library  lib;
 14 9c611279 2012-10-21 rsc static int         dpi = 96;
 15 9c611279 2012-10-21 rsc 
 16 9c611279 2012-10-21 rsc void
 17 9c611279 2012-10-21 rsc loadfonts(void)
 18 9c611279 2012-10-21 rsc {
 19 9c611279 2012-10-21 rsc 	int i;
 20 9c611279 2012-10-21 rsc 	FT_Error e;
 21 9c611279 2012-10-21 rsc 	FcFontSet *sysfonts;
 22 9c611279 2012-10-21 rsc 
 23 9c611279 2012-10-21 rsc 	if(!FcInit() || (fc=FcInitLoadConfigAndFonts()) == NULL) {
 24 9c611279 2012-10-21 rsc 		fprint(2, "fontconfig initialization failed\n");
 25 9c611279 2012-10-21 rsc 		exits("fontconfig failed");
 26 9c611279 2012-10-21 rsc 	}
 27 9c611279 2012-10-21 rsc 
 28 9c611279 2012-10-21 rsc 	e = FT_Init_FreeType(&lib);
 29 9c611279 2012-10-21 rsc 	if(e) {
 30 9c611279 2012-10-21 rsc 		fprint(2, "freetype initialization failed: %d\n", e);
 31 9c611279 2012-10-21 rsc 		exits("freetype failed");
 32 9c611279 2012-10-21 rsc 	}
 33 9c611279 2012-10-21 rsc 
 34 9c611279 2012-10-21 rsc 	sysfonts = FcConfigGetFonts(fc, FcSetSystem);
 35 9c611279 2012-10-21 rsc 
 36 9c611279 2012-10-21 rsc 	xfont = emalloc9p(sysfonts->nfont*sizeof xfont[0]);
 37 9c611279 2012-10-21 rsc 	memset(xfont, 0, sysfonts->nfont*sizeof xfont[0]);
 38 9c611279 2012-10-21 rsc 	for(i=0; i<sysfonts->nfont; i++) {
 39 9c611279 2012-10-21 rsc 		FcChar8 *fullname, *fontfile;
 40 9c611279 2012-10-21 rsc 		int index;
 41 9c611279 2012-10-21 rsc 		FcPattern *pat = sysfonts->fonts[i];
 42 9c611279 2012-10-21 rsc 
 43 9c611279 2012-10-21 rsc 		if(FcPatternGetString(pat, FC_FULLNAME, 0, &fullname) != FcResultMatch ||
 44 9c611279 2012-10-21 rsc 		   FcPatternGetString(pat, FC_FILE, 0, &fontfile) != FcResultMatch     ||
 45 9c611279 2012-10-21 rsc 		   FcPatternGetInteger(pat, FC_INDEX, 0, &index) != FcResultMatch)
 46 9c611279 2012-10-21 rsc 			continue;
 47 9c611279 2012-10-21 rsc 
 48 9c611279 2012-10-21 rsc 		xfont[nxfont].name     = strdup((char*)fullname);
 49 9c611279 2012-10-21 rsc 		xfont[nxfont].fontfile = strdup((char*)fontfile);
 50 9c611279 2012-10-21 rsc 		xfont[nxfont].index    = index;
 51 9c611279 2012-10-21 rsc 		nxfont++;
 52 9c611279 2012-10-21 rsc 	}
 53 9c611279 2012-10-21 rsc 
 54 9c611279 2012-10-21 rsc 	FcFontSetDestroy(sysfonts);
 55 9c611279 2012-10-21 rsc }
 56 9c611279 2012-10-21 rsc 
 57 9c611279 2012-10-21 rsc void
 58 9c611279 2012-10-21 rsc load(XFont *f)
 59 9c611279 2012-10-21 rsc {
 60 9c611279 2012-10-21 rsc 	FT_Face face;
 61 9c611279 2012-10-21 rsc 	FT_Error e;
 62 9c611279 2012-10-21 rsc 	FT_ULong charcode;
 63 9c611279 2012-10-21 rsc 	FT_UInt glyph_index;
 64 9c611279 2012-10-21 rsc 
 65 9c611279 2012-10-21 rsc 	if(f->loaded)
 66 9c611279 2012-10-21 rsc 		return;
 67 9c611279 2012-10-21 rsc 
 68 9c611279 2012-10-21 rsc 	e = FT_New_Face(lib, f->fontfile, f->index, &face);
 69 9c611279 2012-10-21 rsc 
 70 9c611279 2012-10-21 rsc 	if(e){
 71 9c611279 2012-10-21 rsc 		fprint(2, "load failed for %s (%s) index:%d\n", f->name, f->fontfile, f->index);
 72 9c611279 2012-10-21 rsc 		return;
 73 9c611279 2012-10-21 rsc 	}
 74 9c611279 2012-10-21 rsc 
 75 9c611279 2012-10-21 rsc 	if(!FT_IS_SCALABLE(face)) {
 76 9c611279 2012-10-21 rsc 		fprint(2, "%s is a non scalable font, skipping\n", f->name);
 77 9c611279 2012-10-21 rsc 		FT_Done_Face(face);
 78 9c611279 2012-10-21 rsc 	    f->loaded = 1;
 79 9c611279 2012-10-21 rsc 		return;
 80 9c611279 2012-10-21 rsc 	}
 81 9c611279 2012-10-21 rsc 
 82 9c611279 2012-10-21 rsc 	f->unit = face->units_per_EM;
 83 9c611279 2012-10-21 rsc 	f->height = (int)((face->ascender - face->descender) * 1.2);
 84 9c611279 2012-10-21 rsc 	f->originy = face->descender; // bbox.yMin (or descender)  is negative, becase the baseline is y-coord 0
 85 9c611279 2012-10-21 rsc 
 86 9c611279 2012-10-21 rsc 	for(charcode=FT_Get_First_Char(face, &glyph_index); glyph_index != 0;
 87 9c611279 2012-10-21 rsc 		charcode=FT_Get_Next_Char(face, charcode, &glyph_index)) {
 88 9c611279 2012-10-21 rsc 
 89 9c611279 2012-10-21 rsc 		int idx = charcode>>8;
 90 9c611279 2012-10-21 rsc 
 91 9c611279 2012-10-21 rsc 		if(charcode > 0xffff)
 92 9c611279 2012-10-21 rsc 			break;
 93 9c611279 2012-10-21 rsc 
 94 9c611279 2012-10-21 rsc 		if(!f->range[idx]) {
 95 9c611279 2012-10-21 rsc 			f->range[idx] = 1;
 96 9c611279 2012-10-21 rsc 			f->nrange++;
 97 9c611279 2012-10-21 rsc 		}
 98 9c611279 2012-10-21 rsc 	}
 99 9c611279 2012-10-21 rsc 
100 9c611279 2012-10-21 rsc 	FT_Done_Face(face);
101 9c611279 2012-10-21 rsc 	f->loaded = 1;
102 9c611279 2012-10-21 rsc }
103 9c611279 2012-10-21 rsc 
104 9c611279 2012-10-21 rsc Memsubfont*
105 9c611279 2012-10-21 rsc mksubfont(char *name, int lo, int hi, int size, int antialias)
106 9c611279 2012-10-21 rsc {
107 9c611279 2012-10-21 rsc 	XFont *xf, *xfp, *xfe;
108 9c611279 2012-10-21 rsc 	FT_Face face;
109 9c611279 2012-10-21 rsc 	FT_Error e;
110 9c611279 2012-10-21 rsc 	Memimage *m, *mc, *m1;
111 9c611279 2012-10-21 rsc 	double pixel_size;
112 9c611279 2012-10-21 rsc 	int x, y, y0;
113 9c611279 2012-10-21 rsc 	int i;
114 9c611279 2012-10-21 rsc 	Fontchar *fc, *fc0;
115 9c611279 2012-10-21 rsc 	Memsubfont *sf;
116 63002b3e 2014-03-03 0intro 	//Point rect_points[4];
117 9c611279 2012-10-21 rsc 
118 9c611279 2012-10-21 rsc 	xf = nil;
119 9c611279 2012-10-21 rsc 	for(xfp=xfont, xfe=xfont+nxfont; xfp != xfe; xfp++) {
120 9c611279 2012-10-21 rsc 		if(strcmp(xfp->name, name) == 0) {
121 9c611279 2012-10-21 rsc 			xf = xfp;
122 9c611279 2012-10-21 rsc 			break;
123 9c611279 2012-10-21 rsc 		}
124 9c611279 2012-10-21 rsc 	}
125 9c611279 2012-10-21 rsc 
126 9c611279 2012-10-21 rsc 	if(!xf)
127 9c611279 2012-10-21 rsc 		return nil;
128 9c611279 2012-10-21 rsc 
129 9c611279 2012-10-21 rsc 	e = FT_New_Face(lib, xf->fontfile, xf->index, &face);
130 9c611279 2012-10-21 rsc 
131 9c611279 2012-10-21 rsc 	if(e){
132 9c611279 2012-10-21 rsc 		fprint(2, "load failed for %s (%s) index:%d\n", xf->name, xf->fontfile, xf->index);
133 9c611279 2012-10-21 rsc 		return nil;
134 9c611279 2012-10-21 rsc 	}
135 9c611279 2012-10-21 rsc 
136 9c611279 2012-10-21 rsc 	e = FT_Set_Char_Size(face, 0, size<<6, dpi, dpi);
137 9c611279 2012-10-21 rsc 	if(e){
138 9c611279 2012-10-21 rsc 		fprint(2, "FT_Set_Char_Size failed\n");
139 9c611279 2012-10-21 rsc 		FT_Done_Face(face);
140 9c611279 2012-10-21 rsc 		return nil;
141 9c611279 2012-10-21 rsc 	}
142 9c611279 2012-10-21 rsc 
143 9c611279 2012-10-21 rsc 	pixel_size = (dpi*size)/72.0;
144 9c611279 2012-10-21 rsc 	x = (int)((face->max_advance_width) * pixel_size/xf->unit + 0.99999999);
145 9c611279 2012-10-21 rsc 	y = (int)((face->ascender - face->descender) * pixel_size/xf->unit + 0.99999999);
146 9c611279 2012-10-21 rsc 	y0 = (int)(-face->descender * pixel_size/xf->unit + 0.99999999);
147 9c611279 2012-10-21 rsc 
148 9c611279 2012-10-21 rsc 	m = allocmemimage(Rect(0, 0, x*(hi+1-lo), y), antialias ? GREY8 : GREY1);
149 9c611279 2012-10-21 rsc 	if(m == nil) {
150 9c611279 2012-10-21 rsc 		FT_Done_Face(face);
151 9c611279 2012-10-21 rsc 		return nil;
152 9c611279 2012-10-21 rsc 	}
153 9c611279 2012-10-21 rsc 	mc = allocmemimage(Rect(0, 0, x, y), antialias ? GREY8 : GREY1);
154 9c611279 2012-10-21 rsc 	if(mc == nil) {
155 9c611279 2012-10-21 rsc 		freememimage(m);
156 9c611279 2012-10-21 rsc 		FT_Done_Face(face);
157 9c611279 2012-10-21 rsc 		return nil;
158 9c611279 2012-10-21 rsc 	}
159 9c611279 2012-10-21 rsc 	memfillcolor(m, DBlack);
160 9c611279 2012-10-21 rsc 	memfillcolor(mc, DBlack);
161 9c611279 2012-10-21 rsc 	fc = malloc((hi+2 - lo) * sizeof fc[0]);
162 9c611279 2012-10-21 rsc 	sf = malloc(sizeof *sf);
163 9c611279 2012-10-21 rsc 	if(fc == nil || sf == nil) {
164 9c611279 2012-10-21 rsc 		freememimage(m);
165 9c611279 2012-10-21 rsc 		freememimage(mc);
166 9c611279 2012-10-21 rsc 		free(fc);
167 9c611279 2012-10-21 rsc 		free(sf);
168 9c611279 2012-10-21 rsc 		FT_Done_Face(face);
169 9c611279 2012-10-21 rsc 		return nil;
170 9c611279 2012-10-21 rsc 	}
171 9c611279 2012-10-21 rsc 	fc0 = fc;
172 9c611279 2012-10-21 rsc 
173 9c611279 2012-10-21 rsc 	//rect_points[0] = mc->r.min;
174 9c611279 2012-10-21 rsc 	//rect_points[1] = Pt(mc->r.max.x, mc->r.min.y);
175 9c611279 2012-10-21 rsc 	//rect_points[2] = mc->r.max;
176 9c611279 2012-10-21 rsc 	//rect_points[3] = Pt(mc->r.min.x, mc->r.max.y);
177 9c611279 2012-10-21 rsc 
178 9c611279 2012-10-21 rsc 	x = 0;
179 9c611279 2012-10-21 rsc 	for(i=lo; i<=hi; i++, fc++) {
180 9c611279 2012-10-21 rsc 		int r;
181 9c611279 2012-10-21 rsc 		int advance;
182 9c611279 2012-10-21 rsc 
183 9c611279 2012-10-21 rsc 		memfillcolor(mc, DBlack);
184 9c611279 2012-10-21 rsc 
185 9c611279 2012-10-21 rsc 		e = FT_Load_Char(face, i, FT_LOAD_RENDER|(antialias ? 0:FT_LOAD_TARGET_MONO));
186 9c611279 2012-10-21 rsc 		if(e){
187 9c611279 2012-10-21 rsc 			fprint(2, "FT_Load_Char failed for %d\n", i);
188 9c611279 2012-10-21 rsc 			//mempoly(mc, rect_points, 4, Endsquare, Endsquare, 0, memopaque, ZP, S);
189 9c611279 2012-10-21 rsc 			memimageline(mc, m->r.min, Pt(m->r.max.x, m->r.min.y), Endsquare, Endsquare, 0, memopaque, ZP, S);
190 9c611279 2012-10-21 rsc 			memimageline(mc, m->r.min, Pt(m->r.min.x, m->r.max.y), Endsquare, Endsquare, 0, memopaque, ZP, S);
191 9c611279 2012-10-21 rsc 			memimageline(mc, Pt(m->r.max.x, m->r.min.y), m->r.max, Endsquare, Endsquare, 0, memopaque, ZP, S);
192 9c611279 2012-10-21 rsc 			memimageline(mc, Pt(m->r.min.x, m->r.max.y), m->r.max, Endsquare, Endsquare, 0, memopaque, ZP, S);
193 9c611279 2012-10-21 rsc 			memimageline(mc, m->r.min, m->r.max, Endsquare, Endsquare, 0, memopaque, ZP, S);
194 9c611279 2012-10-21 rsc 			advance = Dx(m->r);
195 9c611279 2012-10-21 rsc 
196 9c611279 2012-10-21 rsc 			memimagedraw(m, Rect(x, 0, x + advance, y), mc, ZP, memopaque, ZP, S);
197 9c611279 2012-10-21 rsc 		} else {
198 9c611279 2012-10-21 rsc 			FT_Bitmap *bitmap = &face->glyph->bitmap;
199 9c611279 2012-10-21 rsc 			uchar *base = byteaddr(mc, mc->r.min);
200 9c611279 2012-10-21 rsc 			advance = (face->glyph->advance.x+32) >> 6;
201 9c611279 2012-10-21 rsc 
202 9c611279 2012-10-21 rsc 			for(r=0; r < bitmap->rows; r++)
203 9c611279 2012-10-21 rsc 				memmove(base + r*mc->width*sizeof(u32int), bitmap->buffer + r*bitmap->pitch, bitmap->pitch);
204 9c611279 2012-10-21 rsc 
205 9c611279 2012-10-21 rsc 			memimagedraw(m, Rect(x, 0, x + advance, y), mc,
206 9c611279 2012-10-21 rsc 				Pt(-face->glyph->bitmap_left, -(y - y0 - face->glyph->bitmap_top)),
207 9c611279 2012-10-21 rsc 				memopaque, ZP, S);
208 9c611279 2012-10-21 rsc 		}
209 9c611279 2012-10-21 rsc 
210 9c611279 2012-10-21 rsc 		fc->x = x;
211 9c611279 2012-10-21 rsc 		fc->top = 0;
212 9c611279 2012-10-21 rsc 		fc->bottom = y;
213 9c611279 2012-10-21 rsc 		fc->left = 0;
214 9c611279 2012-10-21 rsc 		fc->width = advance;
215 9c611279 2012-10-21 rsc 		x += advance;
216 9c611279 2012-10-21 rsc 
217 9c611279 2012-10-21 rsc #ifdef DEBUG_FT_BITMAP
218 9c611279 2012-10-21 rsc 		for(r=0; r < bitmap->rows; r++) {
219 9c611279 2012-10-21 rsc 			int c;
220 9c611279 2012-10-21 rsc 			uchar *span = bitmap->buffer+(r*bitmap->pitch);
221 9c611279 2012-10-21 rsc 			for(c = 0; c < bitmap->width; c++) {
222 9c611279 2012-10-21 rsc 				fprint(1, "%02x", span[c]);
223 9c611279 2012-10-21 rsc 			}
224 9c611279 2012-10-21 rsc 			fprint(1,"\n");
225 9c611279 2012-10-21 rsc 		}
226 9c611279 2012-10-21 rsc #endif
227 9c611279 2012-10-21 rsc 
228 9c611279 2012-10-21 rsc #ifdef DEBUG_9_BITMAP
229 9c611279 2012-10-21 rsc 		for(r=0; r < mc->r.max.y; r++) {
230 9c611279 2012-10-21 rsc 			int c;
231 9c611279 2012-10-21 rsc 			uchar *span = base+(r*mc->width*sizeof(u32int));
232 9c611279 2012-10-21 rsc 			for(c = 0; c < Dx(mc->r); c++) {
233 9c611279 2012-10-21 rsc 				fprint(1, "%02x", span[c]);
234 9c611279 2012-10-21 rsc 			}
235 9c611279 2012-10-21 rsc 			fprint(1,"\n");
236 9c611279 2012-10-21 rsc 		}
237 9c611279 2012-10-21 rsc #endif
238 9c611279 2012-10-21 rsc 	}
239 9c611279 2012-10-21 rsc 	fc->x = x;
240 9c611279 2012-10-21 rsc 
241 9c611279 2012-10-21 rsc 	// round up to 32-bit boundary
242 9c611279 2012-10-21 rsc 	// so that in-memory data is same
243 9c611279 2012-10-21 rsc 	// layout as in-file data.
244 9c611279 2012-10-21 rsc 	if(antialias)
245 9c611279 2012-10-21 rsc 		x += -x & 3;
246 9c611279 2012-10-21 rsc 	else
247 9c611279 2012-10-21 rsc 		x += -x & 31;
248 9c611279 2012-10-21 rsc 	m1 = allocmemimage(Rect(0, 0, x, y), antialias ? GREY8 : GREY1);
249 9c611279 2012-10-21 rsc 	memimagedraw(m1, m1->r, m, m->r.min, memopaque, ZP, S);
250 9c611279 2012-10-21 rsc 	freememimage(m);
251 9c611279 2012-10-21 rsc 
252 9c611279 2012-10-21 rsc 	sf->name = nil;
253 9c611279 2012-10-21 rsc 	sf->n = hi+1 - lo;
254 9c611279 2012-10-21 rsc 	sf->height = Dy(m1->r);
255 9c611279 2012-10-21 rsc 	sf->ascent = Dy(m1->r) - y0;
256 9c611279 2012-10-21 rsc 	sf->info = fc0;
257 9c611279 2012-10-21 rsc 	sf->bits = m1;
258 9c611279 2012-10-21 rsc 
259 9c611279 2012-10-21 rsc 	FT_Done_Face(face);
260 9c611279 2012-10-21 rsc 	return sf;
261 9c611279 2012-10-21 rsc }