4dfdeb1996-12-04Per Hedbor string cvs_version="$Id: graphic_text.pike,v 1.3 1996/12/04 06:06:34 per Exp $";
d47cbf1996-12-02Per Hedbor #include <module.h> inherit "module"; inherit "roxenlib"; array register_module() { return ({ MODULE_LOCATION | MODULE_PARSER, "Graphics text", "Makes a few new tags:" "&lt;gh1&gt; to &lt;gh6&gt;: Headers<br>\n" "&lt;gh&gt;: Header<br>\n" "&lt;gtext&gt;: Graphical text<br>\n" "&lt;anfang&gt;: Make the first character to a graphical one<br>\n" "\n" "Common arguments:\n <pre>" " bg=#rrggbb Use this background, default taken from the\n" " &lt;body&gt; tag, if any\n" " fg=#rrggbb Use this foreground, default taken from the\n" " &lt;body&gt; tag, if any\n" " font=fnt Use this font. The fonts can be found in the\n" " directory specified in the configuration\n" " interface.\n" " If no font is specified, the one from the\n" " define 'font' is used, or if there is no\n" " define, the default font will be used.\n" " scale=float Scale to this font, mostly useful in the &lt;gtext&gt;\n" " tag, will not work at all in the &lt;gh[number]&gt;\n" " tags.\n" " 2 3 4 5 6 Short for scale=1.0/([number]*0.6)\n" " notrans Do _not_ make the background color transparent\n" " split Make each word into a separate gif image\n" " href=url Link the image to the specified URL\n" " The 'link' color of the document will be\n" " used as the default foreground of the text\n" " quant=cols Use this number of colors\n" " magic[=message] Modifier to href, more flashy links\n" " Does <b>not</b> work with 'split'\n" " fs Use floyd-steinberg dithering\n" " border=int,#col Draw an border (width is the first argument\n" " in the specified color\n" " spacing=int Add this amount of spacing around the text\n" " bevel=int Draw a bevel box (width is the argument)\n" " textbox=al,#col Use 'al' as opaque value to draw a box below\n" " the text with the specified color.\n"
4dfdeb1996-12-04Per Hedbor  " shadow=int,dist Draw a drop-shadow (variable distance/intensity)\n"
d47cbf1996-12-02Per Hedbor  " fuzz=#col The 'shine' effect used in the 'magic'\n" " highlightning\n" " opaque=0-100% Draw with more or less opaque text (100%\n" " is default)\n" " rotate=ang(deg.)Rotate the finished image\n" " background=file Use the specifed file as a background\n" " texture=file Use the specified file as text texture\n"
4dd97c1996-12-04Per Hedbor  "</pre>\n", 0, 1,
d47cbf1996-12-02Per Hedbor  }); } array (string) list_fonts() {
4dd97c1996-12-04Per Hedbor  array fnts; catch(fnts = get_dir("fonts/32/") - ({".",".."})); if(!fnts) { report_error("Failed to find any fonts in 'fonts/32/'. No default font.\n"); return ({}); } return fnts;
d47cbf1996-12-02Per Hedbor } void create() { defvar("location", "/gtext/", "Mountpoint", TYPE_LOCATION, "The URL-prefix for the anfang characters."); defvar("cols", 16, "Default number of colors per image", TYPE_INT_LIST, "The default number of colors to use. 16 seems to be enough. " "The size of the image depends on the number of colors", ({ 1,2,3,4,5,6,7,8,10,16,32,64,128,256 })); defvar("default_size", 32, "Default font size", TYPE_INT_LIST, "The default size for the font. This is used for the 'base' size, " "and can be scaled up or down in the tags.", ({ 16, 32, 64 })); defvar("default_font", "urw_itc_avant_garde-demi-r", "Default font", TYPE_STRING_LIST, "The default font. The 'font dir' will be prepended to the path", list_fonts()); } string query_location() { return query("location"); } mapping (string:object) fonts = ([]); object(Font) load_font(string name) { object fnt = Font(); if(!name) name = QUERY(default_size)+"/"+QUERY(default_font); else if(sscanf(name, "%*s/%*s") != 2) name=QUERY(default_size)+"/"+name; name = "fonts/" + name; if(fnt->load( name )) return fnt; perror("Failed to load the font "+name+", using the default font.\n"); if(!fnt->load("fonts/"+QUERY(default_size) +"/"+ QUERY(default_font))) error("Failed to load the default font\n"); return fnt; } static private mapping (int:mapping(string:mixed)) cached_args = ([ ]); #define MAX(a,b) ((a)<(b)?(b):(a)) static private mapping (int:array(array(int))) matrixes = ([]); array (array(int)) make_matrix(int size) { if(matrixes[size]) return matrixes[size]; array res; int i; int j; res = map_array(allocate(size), lambda(int s, int size){ return allocate(size); }, size); for(i=0; i<size; i++) for(j=0; j<size; j++) res[i][j] = (int)MAX((float)size/2.0-sqrt((size/2-i)*(size/2-i) + (size/2-j)*(size/2-j)),0); return matrixes[size] = res; } object (Image) load_image(string f) { object file = File(); string data; object img = Image(); perror("Loading "+f+"\n"); if(!file->open(f,"r")) { perror("Failed to open file ("+f+").\n"); return 0; } if(!(data=file->read(0x7fffffff))) return 0; if(img->frompnm(data)) return img; if(img->fromgif(data)) return img; perror("Failed to parse file.\n"); return 0; } object (Image) blur(object (Image) img, int amnt) { for(int i=0; i<amnt; i++) img = img->apply_matrix( make_matrix((int)sqrt(img->ysize()+10))); return img; } constant white = ({ 255,255,255 }); constant lgrey = ({ 200,200,200 }); constant grey = ({ 128,128,128 }); constant black = ({ 0,0,0 }); constant wwwb = ({ lgrey,lgrey,grey,black }); object (Image) bevel(object (Image) in, int width) {
4dfdeb1996-12-04Per Hedbor  int h=in->ysize(); int w=in->xsize();
d47cbf1996-12-02Per Hedbor 
4dfdeb1996-12-04Per Hedbor  in->paste_alpha(Image(width,h-width*2,@white), 160, 0, width); in->paste_alpha(Image(width,h-width*2,@black), 128, in->xsize()-width, width); in->paste_alpha(Image(w-width*2,width,@white), 160, 0, 0); in->paste_alpha(Image(w-width*2,width,@black), 128, width, in->ysize()-width);
d47cbf1996-12-02Per Hedbor 
4dfdeb1996-12-04Per Hedbor  object corner = Image(width+1,width+1); for(int i=-1; i<=width; i++) corner->line(i,width-i,i,-1, 200,200,200);
d47cbf1996-12-02Per Hedbor  in->paste_alpha(corner, 128, in->xsize()-width,0); in->paste_alpha(corner, 128, -1, in->ysize()-width);
4dfdeb1996-12-04Per Hedbor  corner=0;
d47cbf1996-12-02Per Hedbor  return in; } object (Image) make_text_image(mapping args, object font, string text) { object (Image) text_alpha=font->write(@(text/"\n")); int xoffset=0, yoffset=0; if(int op=((((int)args->opaque)*255)/100)) // Transparent text... text_alpha=text_alpha->color(op,op,op); int txsize=text_alpha->xsize(); int tysize=text_alpha->ysize(); // Size of the text, in pixels. int xsize=txsize; // Image size, in pixels int ysize=tysize; if(args->bevel) { xoffset += (int)args->bevel; yoffset += (int)args->bevel; xsize += ((int)args->bevel)*2; ysize += ((int)args->bevel)*2; } if(args->spacing) { xoffset += (int)args->spacing; yoffset += (int)args->spacing; xsize += ((int)args->spacing)*2; ysize += ((int)args->spacing)*2; } if(args->yspacing) { yoffset += (int)args->yspacing; ysize += ((int)args->yspacing)*2; }
4dfdeb1996-12-04Per Hedbor  if(args->shadow) { xsize+=((int)(args->shadow/",")[-1])+2; ysize+=((int)(args->shadow/",")[-1])+2; }
d47cbf1996-12-02Per Hedbor  if(args->xspacing) { xoffset += (int)args->xspacing; xsize += ((int)args->xspacing)*2; } if(args->border) { xoffset += (int)args->border; yoffset += (int)args->border; xsize += ((int)args->border)*2; ysize += ((int)args->border)*2; }
4dd97c1996-12-04Per Hedbor  array (int) bgcolor = parse_color(args->bg); array (int) fgcolor = parse_color(args->fg);
d47cbf1996-12-02Per Hedbor  object background,foreground; if(args->texture) foreground = load_image(args->texture);
4dfdeb1996-12-04Per Hedbor  if(args->background) { background = load_image(args->background); xsize = background->xsize(); ysize = background->ysize(); } else background = Image(xsize, ysize, @bgcolor);
d47cbf1996-12-02Per Hedbor  if(args->bevel) background = bevel(background, (int)args->bevel); if(args->textbox) // Draw a text-box on the background. {
4dfdeb1996-12-04Per Hedbor  int alpha,border;
d47cbf1996-12-02Per Hedbor  string bg; sscanf(args->textbox, "%d,%s", alpha, bg);
4dfdeb1996-12-04Per Hedbor  sscanf(bg,"%s,%d", bg,border); background->paste_alpha(Image(txsize+border,tysize+border,@parse_color(bg)), 255-(alpha*255/100), xoffset, yoffset);
d47cbf1996-12-02Per Hedbor  }
4dfdeb1996-12-04Per Hedbor  if(args->shadow) { int sd = ((int)args->shadow+10)*2; int sdist = ((int)(args->shadow/",")[-1])+2; object ta = text_alpha->copy(); ta = ta->color(256-sd,256-sd,256-sd); background->paste_mask(Image(txsize,tysize),ta,xoffset+sdist, yoffset+sdist); } if(!foreground) foreground=Image(xsize, ysize, @fgcolor);
d47cbf1996-12-02Per Hedbor 
4dfdeb1996-12-04Per Hedbor  background->paste_mask(foreground, text_alpha, xoffset, yoffset);
d47cbf1996-12-02Per Hedbor  foreground = text_alpha = 0; if(args->scale) if((float)args->scale <= 2.0) background = background->scale((float)args->scale); if(args->rotate) { string c; if(sscanf(args->rotate, "%*d,%s", c))
4dd97c1996-12-04Per Hedbor  background->setcolor(@parse_color(c));
d47cbf1996-12-02Per Hedbor  else background->setcolor(@bgcolor); background = background->rotate((float)args->rotate); }
4dfdeb1996-12-04Per Hedbor  if(args->crop) background = background->autocrop();
d47cbf1996-12-02Per Hedbor  return background; } array(int)|string write_text(int _args, string text, int size, object id) { object img; mapping args = cached_args[_args]; if(!args) return 0; text = replace(text, ({ "&lt;", "&gt;", "&amp;" }), ({ "<", ">", "&" })); // Check the cache first.. if(!id || (!id->pragma["no-cache"])) if(mixed data = cache_lookup("font:"+_args, text)) { if(size) return data[1]; return data[0]; } // Nothing found in the cache. Generate a new image. data = cache_lookup("fonts:fonts", args->font); if(!data) { data = load_font(args->font); cache_set("fonts:fonts", args->font, data); } // Fonts and such are now initialized. img = make_text_image(args,data,text); // Now we have the image in 'img', or nothing. if(!img) return 0; // place in cache. int q = (int)args->quant || (args->background?256:16);
4dd97c1996-12-04Per Hedbor  img = img->map_closest(img->select_colors(q-1)+({parse_color(args->bg)}));
d47cbf1996-12-02Per Hedbor  if(args->fs)
4dd97c1996-12-04Per Hedbor  data=({ img->togif_fs(@(args->notrans?({}):parse_color(args->bg))),
d47cbf1996-12-02Per Hedbor  ({img->xsize(),img->ysize()})}); else
4dd97c1996-12-04Per Hedbor  data=({ img->togif(@(args->notrans?({}):parse_color(args->bg))),
d47cbf1996-12-02Per Hedbor  ({img->xsize(),img->ysize()})}); img=0; cache_set("font:"+_args, text, data); if(size) return data[1]; return data[0]; } mapping find_file(string f, object rid) { string id; sscanf(f,"%d/%s", id, f); return http_string_answer(write_text((int)id,f,0,rid), "image/gif"); } string quote(string in) { string res=""; for(int i=0; i<strlen(in); i++) switch(in[i]) { case 'a'..'z': case 'A'..'Z': case '0'..'9': case '.': case ',': case '!': res += in[i..i]; break; default: res += sprintf("%%%02x", in[i]); } return res; } int number=time(1); int find_or_insert(mapping find) { array a = indices(cached_args); array b = values(cached_args); int i; for(i=0; i<sizeof(a); i++) if(equal(find, b[i])) return a[i]; cached_args[number]=find; return number++; } string magic_javascript_header(object id) { if(!id->supports->javascript || !id->supports->images) return ""; return ("<script>\n" "<!-- \n" "version = 1;\n" "browserName = navigator.appName;\n" "browserVer = parseInt(navigator.appVersion); \n" "if(browserName == \"Netscape\" && (browserVer == 3 || browserVer == 4 || browserVer == 5 || browserVer == 6)) \n" " version = \"3\";\n" "else\n" " version= \"1\";\n" "\n" "function stat(txt)\n" "{\n" " top.window.status = txt;\n" "}\n" "\n" "function img_act(imgName, txt)\n" "{\n" " if (version == \"3\") \n" " {\n" " imgOn = eval(imgName + \"2.src\");\n" " document [imgName].src = imgOn;\n" " }\n" " setTimeout(\"stat('\"+txt+\"')\", 100);\n" "}\n" "\n" "function img_inact(imgName)\n" "{\n" " if (version == \"3\") \n" " {\n" " imgOff = eval(imgName + \".src\");\n" " document [imgName].src = imgOff;\n" " }\n" "}\n" "// -->\n" "</script>\n"); } string magic_image(string url, int xs, int ys, string sn, string image_1, string image_2, string alt, string mess,object id) { if(!id->supports->images) return alt; if(!id->supports->javascript) return ("<a href=\""+url+"\"><img src="+image_1+" name="+ sn+" border=0 alt=\""+alt+"\" ></a>\n"); return ("<script>\n" "<!-- \n" "if(version == \"3\")\n" "{\n" " "+sn+" = new Image("+xs+", "+ys+");\n" " "+sn+".src = \""+image_1+"\";\n" " "+sn+"2 = new Image("+xs+", "+ys+");\n" " "+sn+"2.src = \""+image_2+"\";\n" "}\n" "// -->\n" "</script>\n" "<a href=\""+url+"\" onMouseover=\"img_act('"+sn+"','" +(mess||url)+"');return true;\"\n" "\n" "onMouseout=\"img_inact('"+sn+"')\"><img \n" " src="+image_1+" name="+sn+" border=0 alt=\""+alt+"\" ></a>\n"); } string tag_graphicstext(string t, mapping arg, string contents, object id, object foo, mapping defines) { if(!strlen(contents)) return ""; // There is no need to make this image. string pre, post, defalign, gt, rest, magic; int i, split; // No images here, let's generate an alternative.. if(!id->supports->images || id->prestate->noimages) { if(!arg->split) contents=replace(contents,"\n", "\n<br>\n"); switch(t) { case "gtext": case "anfang": if(arg->href) return "<a href=\""+arg->href+"\">"+contents+"</a>"; return contents; default: if(sscanf(t, "%s%d", t, i)==2) rest="<h"+i+">"+contents+"</h"+i+">"; else rest="<h1>"+contents+"</h1>"; if(arg->href) return "<a href=\""+arg->href+"\">"+rest+"</a>"; return rest; } } if(arg->magic) { magic=arg->magic; m_delete(arg,"magic"); } string lp, url; if(arg->href) { url = arg->href; lp = "<a href=\""+arg->href+"\">"; if(!arg->fg) arg->fg=defines->link||"#0000ff"; m_delete(arg,"href"); } // Modify the 'arg' mapping... if(defines->fg && !arg->fg) arg->fg=defines->fg; if(defines->bg && !arg->bg) arg->bg=defines->bg; if(defines->font && !arg->font) arg->font=defines->font||QUERY(default_font); if(!arg->font) arg->font = QUERY(default_font); if(arg->split) { split=1; m_delete(arg,"split"); } // Support for <gh 2> like things. for(i=2; i<10; i++) if(arg[(string)i]) { arg->scale = 1.0 / ((float)i*0.6); m_delete(arg, (string)i); } // Support for <gh1> like things. if(sscanf(t, "%s%d", t, i)==2) if(i > 1) arg->scale = 1.0 / ((float)i*0.6); string moreargs=""; if(arg->hspace) { moreargs += "hspace="+arg->hspace+" "; m_delete(arg,"hspace"); } if(arg->vspace) { moreargs += "vspace="+arg->vspace+" "; m_delete(arg,"vspace"); } // Now the 'args' mapping is modified enough.. int num = find_or_insert( arg ); gt=contents; rest=""; if(split) { string word; array res = ({}); string pre = query_location()+num+"/"; if(lp) res+=({ lp }); gt=replace(gt, "\n", " "); foreach(gt/" "-({""}), word) { array size = write_text(num,word,1,0); res += ({ "<img border=0 alt=\""+replace(word,"\"","'") +"\" src=\'"+pre+quote(word)+"\' width="+ size[0]+" height="+size[1]+" "+moreargs+">\n" }); } if(lp) res+=({ "</a>" }); return res*""; } switch(t) { case "gh1": case "gh2": case "gh3": case "gh4": case "gh5": case "gh6": case "gh7": case "gh": pre="<p>"; post="<br>"; defalign="top"; break; case "gtext": pre=""; post=""; defalign="bottom"; break; case "anfang": gt=contents[0..0]; rest=contents[1..]; pre="<br clear=left>"; post=""; defalign="left"; break; } array size = write_text(num,gt,1,0); if(magic) { string res = ""; arg = mkmapping(indices(arg), values(arg)); arg->fuzz = arg->fg; arg->fg = defines->alink||"#ff0000"; int num2 = find_or_insert(arg); array size = write_text(num2,gt,1,0); if(!defines->magic_java) res = magic_javascript_header(id); defines->magic_java="yes"; return res + magic_image(url||"", size[0], size[1], "i"+(num+""+hash(gt,0x7fffffff))+"g", query_location()+num+"/"+quote(gt), query_location()+num2+"/"+quote(gt), replace(gt, "\"","'"),(magic=="magic"?0:magic), id); } return (pre+(lp?lp:"")+ "<img border=0 alt=\""+replace(gt,"\"","'")+"\" src="+ query_location()+num+"/"+quote(gt) +" align="+(arg->align?arg->align:defalign)+ " width="+size[0]+" height="+size[1]+">"+rest+(lp?"</a>":"")+post); } string tag_body(string t, mapping args, object id, object file, mapping defines) { if(args->bgcolor) defines->bg = args->bgcolor; if(args->text) defines->fg = args->text; if(args->link) defines->link = args->link; if(args->alink) defines->alink = args->alink; if(args->clink) defines->clink = args->clink; if(args->vlink) defines->vlink = args->vlink; } mapping query_tag_callers() { return (["body":tag_body]); } mapping query_container_callers() { return ([ "anfang":tag_graphicstext, "gh":tag_graphicstext, "gh1":tag_graphicstext, "gh2":tag_graphicstext, "gh3":tag_graphicstext, "gh4":tag_graphicstext, "gh5":tag_graphicstext, "gh6":tag_graphicstext, "gtext":tag_graphicstext, ]); }