f668602000-03-02Martin Nilsson // This is a roxen module. Copyright © 1999 - 2000, Roxen IS.
2e0a351999-12-09Martin Nilsson //
37bdda1999-05-18Per Hedbor #include <module.h> inherit "module";
3b85e91999-11-15Per Hedbor constant thread_safe=1;
37bdda1999-05-18Per Hedbor  roxen.ImageCache the_cache;
0023a62000-08-22Martin Nilsson constant cvs_version = "$Id: cimg.pike,v 1.25 2000/08/22 19:00:25 nilsson Exp $";
c043f82000-02-10Martin Nilsson constant module_type = MODULE_PARSER; constant module_name = "Image converter";
7390582000-06-01Martin Nilsson constant module_doc = "Provides the tag <tt>&lt;cimg&gt;</tt> that can be used " "to convert images between different image formats.";
2fafd22000-05-18Kenneth Johansson 
7390582000-06-01Martin Nilsson mapping tagdocumentation() { Stdio.File file=Stdio.File(); if(!file->open(__FILE__,"r")) return 0; mapping doc=compile_string("#define manual\n"+file->read())->tagdoc; string imagecache=the_cache->documentation("cimg src='internal-roxen-robodog'");
2fafd22000-05-18Kenneth Johansson 
7390582000-06-01Martin Nilsson  doc->cimg+=imagecache; doc["cimg-url"]=imagecache; return doc; }
2fafd22000-05-18Kenneth Johansson 
7390582000-06-01Martin Nilsson #ifdef manual
2fafd22000-05-18Kenneth Johansson constant tagdoc=(["cimg":#"
2fa8d52000-06-02Martin Nilsson <desc tag><short>Manipulates and converts images between different image formats.</short> Provides the tag <tag>cimg</tag> that makes it is possible to convert, resize, crop and in other ways transform images.</desc>
2fafd22000-05-18Kenneth Johansson  <attr name='src' value='uri' required> The path to the indata file. <ex><cimg src='internal-roxen-robodog'/></ex> </attr> <attr name='data' value='imagedata'> Insert images from other sources, e.g. databases through entities or variables. <ex type='box'>
2fa8d52000-06-02Martin Nilsson <emit source='sql' query='select imagedata from images where id=37'> <cimg data='&sql.imagedata;'/> </emit>
2fafd22000-05-18Kenneth Johansson </ex>
7390582000-06-01Martin Nilsson </attr>",
2fafd22000-05-18Kenneth Johansson  "cimg-url":#"<desc tag><short>This tag generates an URI to the manipulated picture.</short> <tag>cimg-url</tag> takes the same attributes as <tag>cimg</tag> including the image cache attributes. The use for the tag is to insert image-URI's into various places, e.g. a submit-box. </desc> <attr name='src' value='uri' required> The path to the indata file. <ex><cimg-url src='internal-roxen-robodog'/></ex> </attr> <attr name='data' value='imagedata'> Insert images from other sources, e.g. databases through entities or variables. <ex type='box'>
2fa8d52000-06-02Martin Nilsson <emit source='sql' query='select imagedata from images where id=37'> <cimg data='&sql.imagedata;'/> </emit>
2fafd22000-05-18Kenneth Johansson </ex>
7390582000-06-01Martin Nilsson </attr>", ]);
2e0a351999-12-09Martin Nilsson #endif
7390582000-06-01Martin Nilsson 
37bdda1999-05-18Per Hedbor void start() { the_cache = roxen.ImageCache( "cimg", generate_image ); }
2fa8d52000-06-02Martin Nilsson mapping(string:function) query_action_buttons() {
5f13d52000-06-03Martin Nilsson  return ([ "Clear cache":flush_cache ]); } void flush_cache() { the_cache->flush();
2fa8d52000-06-02Martin Nilsson } string status() { array s=the_cache->status(); return sprintf("<b>Images in cache:</b> %d images<br />\n<b>Cache size:</b> %s", s[0]/2, Roxen.sizetostring(s[1])); }
37bdda1999-05-18Per Hedbor mapping generate_image( mapping args, RequestID id ) {
34a9b81999-08-06Peter Bortas  if( args->data ) return roxen.low_decode_image( args->data ); else return roxen.low_load_image( args->src, id );
37bdda1999-05-18Per Hedbor } mapping find_internal( string f, RequestID id ) { return the_cache->http_file_answer( f, id ); }
2fa8d52000-06-02Martin Nilsson mapping get_my_args( mapping args, RequestID id )
37bdda1999-05-18Per Hedbor {
36eceb2000-01-30Per Hedbor  mapping a= ([
2fa8d52000-06-02Martin Nilsson  "src":Roxen.fix_relative( args->src, id ),
37bdda1999-05-18Per Hedbor  "quant":args->quant,
77926b2000-04-11Per Hedbor  "crop":args->crop,
c526921999-05-18Per Hedbor  "format":args->format, "maxwidth":args->maxwidth, "maxheight":args->maxheight, "scale":args->scale, "dither":args->dither,
b941aa1999-06-25Per Hedbor  "gamma":args->gamma,
34a9b81999-08-06Peter Bortas  "data":args->data,
37bdda1999-05-18Per Hedbor  ]);
77926b2000-04-11Per Hedbor 
1c10ca2000-07-05Per Hedbor  if( a->src ) catch {
1133a72000-07-07Henrik Grubbström (Grubba)  array st = id->conf->stat_file(a->src, id) || file_stat(a->src); if (st) { a->mtime = (string) (a->stat = st[ST_MTIME]); a->filesize = (string) st[ST_SIZE]; }
1c10ca2000-07-05Per Hedbor  };
2fa8d52000-06-02Martin Nilsson 
1c10ca2000-07-05Per Hedbor  a["background-color"] = id->misc->defines->bgcolor || "#eeeeee";
77926b2000-04-11Per Hedbor 
c526921999-05-18Per Hedbor  foreach( glob( "*-*", indices(args)), string n ) a[n] = args[n];
77926b2000-04-11Per Hedbor 
34a9b81999-08-06Peter Bortas  return a; }
a49dae2000-08-17Per Hedbor mapping check_args( mapping args ) { if( !args->format ) args->format = "png"; if( !(args->src || args->data) ) RXML.parse_error("Required attribute 'src' or 'data' missing\n"); if( args->src && args->data ) RXML.parse_error("Only one of 'src' and 'data' may be specified\n"); return args; } class TagCimgplugin { inherit RXML.Tag; constant name = "emit"; constant plugin_name = "cimg"; array get_dataset( mapping args, RequestID id ) { mapping res = ([ ]); mapping a = get_my_args( check_args( args ), id ); string data; res->src = (query_internal_location()+the_cache->store( a,id )); data = the_cache->data( a, id , 0 ); res["file-size"] = strlen(data); res["file-size-kb"] = strlen(data)/1024; res["data"] = data; res |= the_cache->metadata( a, id, 0 ); // enforce generation return ({ res }); } } class TagCImg {
2fa8d52000-06-02Martin Nilsson  inherit RXML.Tag; constant name = "cimg"; constant flags = RXML.FLAG_EMPTY_ELEMENT;
a49dae2000-08-17Per Hedbor  class Frame {
2fa8d52000-06-02Martin Nilsson  inherit RXML.Frame;
a49dae2000-08-17Per Hedbor  array do_return(RequestID id) { mapping a = get_my_args( check_args( args ), id );
2fa8d52000-06-02Martin Nilsson  args -= a; args->src = query_internal_location()+the_cache->store( a,id ); if( mapping size = the_cache->metadata( a, id, 1 ) ) { // image in cache (1 above prevents generation on-the-fly) args->width = size->xsize; args->height = size->ysize; }
0023a62000-08-22Martin Nilsson  int xml=!args->noxml; m_delete(args, "noxml"); result = Roxen.make_tag( "img", args, xml );
2fa8d52000-06-02Martin Nilsson  return 0; }
37bdda1999-05-18Per Hedbor  } }
698c121999-05-19Peter Bortas 
2fa8d52000-06-02Martin Nilsson class TagCImgURL { inherit RXML.Tag; constant name = "cimg-url"; constant flags = RXML.FLAG_EMPTY_ELEMENT;
a49dae2000-08-17Per Hedbor  class Frame {
2fa8d52000-06-02Martin Nilsson  inherit RXML.Frame;
a49dae2000-08-17Per Hedbor  array do_return(RequestID id) { result = query_internal_location()+ the_cache->store(get_my_args(check_args( args ), id ),id);
2fa8d52000-06-02Martin Nilsson  return 0; } }
698c121999-05-19Peter Bortas }