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| version 1.22, 2001/04/28 08:43:47 | version 1.63, 2001/12/17 14:02:44 |
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| Line 1 | Line 1 |
| 123 | |
| /** @file | /** @file |
| Parser: @b image parser class. | Parser: @b image parser class. |
| Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) | Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) |
| Author: Alexander Petrosyan <paf@design.ru>(http://paf.design.ru) | |
| Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf) | |
| $Id$ | $Id$ |
| */ | */ |
| /* | |
| jpegsize: gets the width and height (in pixels) of a jpeg file | |
| Andrew Tong, werdna@ugcs.caltech.edu February 14, 1995 | |
| modified slightly by alex@ed.ac.uk | |
| and further still by rjray@uswest.com | |
| optimization and general re-write from tmetro@vl.com | |
| from perl by paf@design.ru | |
| */ | |
| #include "pa_config_includes.h" | #include "pa_config_includes.h" |
| #include "gif.h" | #include "gif.h" |
| Line 25 | Line 34 |
| class MImage : public Methoded { | class MImage : public Methoded { |
| public: // VStateless_class | public: // VStateless_class |
| Value *create_new_value(Pool& pool) { return new(pool) VImage(pool); } | Value *create_new_value(Pool& pool) { return new(pool) VImage(pool); } |
| public: | public: |
| MImage(Pool& pool); | MImage(Pool& pool); |
| public: // Methoded | |
| bool used_directly() { return true; } | bool used_directly() { return true; } |
| }; | }; |
| // helpers | // helpers |
| /// simple buffered reader[from memory/file], used in _measure | #ifndef DOXYGEN |
| class Measure_reader { | class Measure_reader { |
| public: | public: |
| enum { READ_CHUNK_SIZE=0x400 };// 1K | enum { READ_CHUNK_SIZE=0x400*20 };// 20K |
| typedef size_t(*Func)(void *& buf, size_t limit, void *info); | typedef size_t(*Func)(void *& buf, size_t limit, void *info); |
| Measure_reader(Func afunc, void *ainfo) : | Measure_reader(Func afunc, void *ainfo) : |
| Line 47 public: | Line 57 public: |
| chunk(0), offset(0), size(0) { | chunk(0), offset(0), size(0) { |
| } | } |
| size_t read(unsigned char *& buf, size_t limit) { | size_t read(void *&buf, size_t limit) { |
| if(offset+limit>size) // nothing left | if(offset+limit>size) // nothing left |
| if(offset==0 || limit==1) { // only one-byte continuations allowed | if(offset==0 || limit==1) { // only one-byte continuations allowed |
| size=(*func)(chunk, READ_CHUNK_SIZE, info); | size=(*func)(chunk, READ_CHUNK_SIZE, info); |
| Line 72 private: | Line 82 private: |
| size_t offset; | size_t offset; |
| size_t size; | size_t size; |
| }; | }; |
| #endif | |
| /// GIF file header | /// GIF file header |
| struct GIF_Header { | struct GIF_Header { |
| Line 84 struct GIF_Header { | Line 95 struct GIF_Header { |
| char nulls; | char nulls; |
| }; | }; |
| /// JPEG file header | /// JPEG record head |
| struct JFIF_Header { | struct JPG_Segment_head { |
| char length[2]; // length of JFIF segment marker | unsigned char marker; |
| char identifier[5]; // JFIF identifier | unsigned char code; |
| char version[2]; // version | unsigned char length[2]; |
| char units; // units X of Y pixel density | |
| char xdensity[2]; // X pixel density | |
| char ydensity[2]; // X pixel density | |
| char xthumbnails; // width of thumbnails | |
| char ythumbnails; // height of thumbnails | |
| char reserved; // reserved | |
| }; | }; |
| /// JPEG frame header | /// JPEG frame header |
| struct JPG_Frame { | struct JPG_Size_segment_body { |
| char length[2]; // length of image marker | char data; //< data precision of bits/sample |
| char data; // data precision of bits/sample | unsigned char height[2]; //< image height |
| char height[2]; // image height | unsigned char width[2]; //< image width |
| char width[2]; // image width | char numComponents; //< number of color components |
| char numComponents; // number of color components | |
| }; | }; |
| // | // |
| inline short bytes_to_int(unsigned char HI, unsigned char LO) { | inline short x_endian_to_int(unsigned char L, unsigned char H) { |
| return(short)((HI<<8) + LO); | return(short)((H<<8) + L); |
| } | |
| inline short big_endian_to_int(unsigned char b[2]) { | |
| return x_endian_to_int(b[1], b[0]); | |
| } | |
| inline short little_endian_to_int(unsigned char b[2]) { | |
| return x_endian_to_int(b[0], b[1]); | |
| } | } |
| void measure_gif(Pool& pool, const String *origin_string, | void measure_gif(Pool& pool, const String *origin_string, |
| Measure_reader& reader, int& width, int& height) { | Measure_reader& reader, int& width, int& height) { |
| unsigned char *buf; | void *buf; |
| const int head_size=sizeof(GIF_Header); | const int head_size=sizeof(GIF_Header); |
| if(reader.read(buf, head_size)<head_size) | if(reader.read(buf, head_size)<head_size) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| origin_string, | origin_string, |
| "broken GIF header - file size is less then %d bytes", head_size); | "not GIF file - too small"); |
| GIF_Header *head=(GIF_Header *)buf; | |
| GIF_Header& screenD=*reinterpret_cast<GIF_Header *>(buf); | if(strncmp(head->type, "GIF", 3)!=0) |
| if(strncmp(screenD.type, "GIF", 3)!=0) | throw Exception(0, 0, |
| PTHROW(0, 0, | |
| origin_string, | origin_string, |
| "bad image file - GIF signature not found"); | "not GIF file - wrong signature"); |
| width=bytes_to_int(screenD.width[1], screenD.width[0]); | width=little_endian_to_int(head->width); |
| height=bytes_to_int(screenD.height[1], screenD.height[0]); | height=little_endian_to_int(head->height); |
| } | } |
| /// @test remove ugly mech in reader - 20K limit | |
| void measure_jpeg(Pool& pool, const String *origin_string, | void measure_jpeg(Pool& pool, const String *origin_string, |
| Measure_reader& reader, int& width, int& height) { | Measure_reader& reader, int& width, int& height) { |
| // JFIF format markers | // JFIF format markers |
| const unsigned char SOI=0xD8; | const unsigned char MARKER=0xFF; |
| const unsigned char EOI=0xD9; | const unsigned char CODE_SIZE_FIRST=0xC0; |
| const unsigned char APP0=0xE0; | const unsigned char CODE_SIZE_LAST=0xC3; |
| const unsigned char SOF0=0xC0; | |
| const unsigned char SOF2=0xC2; | |
| const unsigned char COM=0xFE; | |
| unsigned char *screenD_buf; | void *buf; |
| unsigned char *h_buf=0; | |
| bool flag=false; | |
| unsigned char *prefix; | |
| const size_t prefix_size=2; | const size_t prefix_size=2; |
| if(reader.read(prefix, prefix_size)<prefix_size) | if(reader.read(buf, prefix_size)<prefix_size) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| origin_string, | origin_string, |
| "broken JPEG file - size is less then %d bytes", prefix_size); | "not JPEG file - too small"); |
| unsigned char *signature=(unsigned char *)buf; | |
| if(((unsigned char *)prefix)[1]!=SOI) | if(!(signature[0]==0xFF && signature[1]==0xD8)) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| origin_string, | origin_string, |
| "broken JPEG file - second byte of header is not 0x%02X", SOI); | "not JPEG file - wrong signature"); |
| unsigned char zero=0; | bool found=false; |
| unsigned char *marker=&zero; | while(true) { |
| void *buf; | |
| do { | // Extract the segment header. |
| while((*marker)!=0xFF) | if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head)) |
| if(reader.read(marker, sizeof(char))<=0) break; | break; |
| if(reader.read(marker, sizeof(char))<=0) break; | JPG_Segment_head *head=(JPG_Segment_head *)buf; |
| switch(*marker) { | |
| case EOI: | // Verify that it's a valid segment. |
| marker=&zero; | if(head->marker!=MARKER) |
| break; | |
| case APP0: | |
| if(!flag) { | |
| flag=true; | |
| if(reader.read(screenD_buf, sizeof(JFIF_Header)) < sizeof(JFIF_Header)) | |
| break; | |
| JFIF_Header& screenD=*reinterpret_cast<JFIF_Header *>(screenD_buf); | |
| if((bytes_to_int(screenD.length[0], screenD.length[1]) < 16) || | |
| strcasecmp(screenD.identifier, "JFIF")) flag=false; | |
| } | |
| break; | break; |
| case SOF0: | |
| case SOF2: | if(head->code >= CODE_SIZE_FIRST && head->code <= CODE_SIZE_LAST) { |
| if(reader.read(h_buf, sizeof(JPG_Frame))<sizeof(JPG_Frame)) | // Segments that contain size info |
| flag=false; | if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body)) |
| break; | |
| JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf; | |
| width=big_endian_to_int(body->width); | |
| height=big_endian_to_int(body->height); | |
| found=true; | |
| break; | break; |
| default: break; | } else { |
| } | // Dummy read to skip over data |
| } while(*marker!=EOI); | size_t limit=big_endian_to_int(head->length) - 2; |
| if(reader.read(buf, limit)<limit) | |
| if(flag && h_buf) { | break; |
| JPG_Frame& h=*reinterpret_cast<JPG_Frame *>(h_buf); | } |
| width=bytes_to_int(h.width[0], h.width[1]); | } |
| height=bytes_to_int(h.height[0], h.height[1]); | |
| } else | if(!found) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| origin_string, | origin_string, |
| "broken JPEG file - APP0 frame not found"); | "broken JPEG file - size frame not found"); |
| } | } |
| // measure center | // measure center |
| void measure(Pool& pool, const String& file_name, | void measure(Pool& pool, const String& file_name, |
| Measure_reader& reader, int& width, int& height) { | Measure_reader& reader, int& width, int& height) { |
| if(const char *cext=strrchr(file_name.cstr(), '.')) { | if(const char *cext=strrchr(file_name.cstr(String::UL_FILE_SPEC), '.')) { |
| cext++; | cext++; |
| if(strcasecmp(cext, "GIF")==0) | if(strcasecmp(cext, "GIF")==0) |
| measure_gif(pool, &file_name, reader, width, height); | measure_gif(pool, &file_name, reader, width, height); |
| else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0) | else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0) |
| measure_jpeg(pool, &file_name, reader, width, height); | measure_jpeg(pool, &file_name, reader, width, height); |
| else | else |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &file_name, | &file_name, |
| "unhandled image file name extension '%s'", cext); | "unhandled image file name extension '%s'", cext); |
| } else | } else |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &file_name, | &file_name, |
| "can not determine image type - no file name extension"); | "can not determine image type - no file name extension"); |
| } | } |
| /// used by image: _measure / read_mem | #ifndef DOXYGEN |
| struct Read_mem_info { | struct Read_mem_info { |
| unsigned char *ptr; | unsigned char *ptr; |
| unsigned char *eof; | unsigned char *eof; |
| }; | }; |
| #endif | |
| static size_t read_mem(void*& buf, size_t limit, void *info) { | static size_t read_mem(void*& buf, size_t limit, void *info) { |
| Read_mem_info& rmi=*static_cast<Read_mem_info *>(info); | Read_mem_info& rmi=*static_cast<Read_mem_info *>(info); |
| buf=rmi.ptr; | buf=rmi.ptr; |
| Line 231 static size_t read_mem(void*& buf, size_ | Line 234 static size_t read_mem(void*& buf, size_ |
| return read_size; | return read_size; |
| } | } |
| /// used by image: _measure / read_disk | #ifndef DOXYGEN |
| struct Read_disk_info { | struct Read_disk_info { |
| const String *file_spec; | const String *file_spec; |
| size_t offset; | size_t offset; |
| }; | }; |
| #endif | |
| static size_t read_disk(void*& buf, size_t limit, void *info) { | static size_t read_disk(void*& buf, size_t limit, void *info) { |
| Read_disk_info& rdi=*static_cast<Read_disk_info *>(info); | Read_disk_info& rdi=*static_cast<Read_disk_info *>(info); |
| Pool& pool=rdi.file_spec->pool(); | Pool& pool=rdi.file_spec->pool(); |
| Line 253 static size_t read_disk(void*& buf, size | Line 257 static size_t read_disk(void*& buf, size |
| // methods | // methods |
| /// ^image:measure[DATA] | |
| static void _measure(Request& r, const String& method_name, MethodParams *params) { | static void _measure(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& data=params->get_no_junction(0, "data must not be code"); | Value& data=params->as_no_junction(0, "data must not be code"); |
| void *info;Measure_reader::Func read_func; | void *info;Measure_reader::Func read_func; |
| Read_mem_info read_mem_info; | Read_mem_info read_mem_info; |
| Line 283 static void _measure(Request& r, const S | Line 286 static void _measure(Request& r, const S |
| static_cast<VImage *>(r.self)->set(file_name, width, height); | static_cast<VImage *>(r.self)->set(file_name, width, height); |
| } | } |
| /// used by image: _html / append_attrib_pair | #ifndef DOXYGEN |
| struct Attrib_info { | struct Attrib_info { |
| String *tag; ///< html tag being constructed | String *tag; ///< html tag being constructed |
| Hash *skip; ///< tag attributes not to append to tag string [to skip] | Hash *skip; ///< tag attributes not to append to tag string [to skip] |
| }; | }; |
| #endif | |
| static void append_attrib_pair(const Hash::Key& key, Hash::Val *val, void *info) { | static void append_attrib_pair(const Hash::Key& key, Hash::Val *val, void *info) { |
| Attrib_info& ai=*static_cast<Attrib_info *>(info); | Attrib_info& ai=*static_cast<Attrib_info *>(info); |
| if(ai.skip && ai.skip->get(key)) | // skip user-specified and internal(starting with "line-") attributes |
| if(ai.skip && ai.skip->get(key) || key.pos("line-")==0) | |
| return; | return; |
| Value& value=*static_cast<Value *>(val); | Value& value=*static_cast<Value *>(val); |
| // src="a.gif" width=123 ismap[=-1] | // src="a.gif" width=123 ismap[=-1] |
| *ai.tag << " " << key; | *ai.tag << " " << key; |
| if(value.is_string() || value.as_double()>=0) | if(value.is_string() || value.as_int()>=0) |
| *ai.tag << "=\"" << value.as_string() << "\""; | *ai.tag << "=\"" << value.as_string() << "\""; |
| } | } |
| /** ^image.html[] | |
| ^image.html[hash] | |
| */ | |
| static void _html(Request& r, const String& method_name, MethodParams *params) { | static void _html(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Line 312 static void _html(Request& r, const Stri | Line 314 static void _html(Request& r, const Stri |
| const Hash& fields=static_cast<VImage *>(r.self)->fields(); | const Hash& fields=static_cast<VImage *>(r.self)->fields(); |
| Hash *attribs=0; | Hash *attribs=0; |
| if(params->size()) | if(params->size()) { |
| if(attribs=params->get(0).get_hash()) { | Value &vattribs=r.process(params->get(0), |
| Attrib_info attrib_info={&tag, 0}; | 0/*no name*/, |
| attribs->for_each(append_attrib_pair, &attrib_info); | false/*don't intercept string*/); |
| } else | if(vattribs.is_defined()) // allow 'void' |
| PTHROW(0, 0, | if(attribs=vattribs.get_hash(&method_name)) { |
| &method_name, | Attrib_info attrib_info={&tag, 0}; |
| "attributes must be must be hash"); | attribs->for_each(append_attrib_pair, &attrib_info); |
| } else | |
| throw Exception(0, 0, | |
| &method_name, | |
| "attributes must be hash"); | |
| } | |
| Attrib_info attrib_info={&tag, attribs}; | Attrib_info attrib_info={&tag, attribs}; |
| fields.for_each(append_attrib_pair, &attrib_info); | fields.for_each(append_attrib_pair, &attrib_info); |
| Line 331 static gdImage *load(Request& r, const S | Line 338 static gdImage *load(Request& r, const S |
| const String& file_name){ | const String& file_name){ |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| const char *file_name_cstr=r.absolute(file_name).cstr(String::UL_FILE_NAME); | const char *file_name_cstr=r.absolute(file_name).cstr(String::UL_FILE_SPEC); |
| if(FILE *f=fopen(file_name_cstr, "rb")) { | if(FILE *f=fopen(file_name_cstr, "rb")) { |
| gdImage& image=*new(pool) gdImage(pool); | gdImage& image=*new(pool) gdImage(pool); |
| image.CreateFromGif(f); | bool ok=image.CreateFromGif(f); |
| fclose(f); | fclose(f); |
| if(!ok) | |
| throw Exception(0, 0, | |
| &file_name, | |
| "is not in GIF format"); | |
| return ℑ | return ℑ |
| } else { | } else { |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "can not open '%s'", file_name_cstr); | "can not open '%s'", file_name_cstr); |
| return 0; | return 0; |
| Line 346 static gdImage *load(Request& r, const S | Line 357 static gdImage *load(Request& r, const S |
| } | } |
| /// ^image.load[background.gif] | |
| static void _load(Request& r, const String& method_name, MethodParams *params) { | static void _load(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& vfile_name=params->get_no_junction(0, "file name must not be code"); | const String& file_name=params->as_string(0, "file name must not be code"); |
| const String& file_name=vfile_name.as_string(); | |
| gdImage& image=*load(r, method_name, file_name); | gdImage& image=*load(r, method_name, file_name); |
| int width=image.SX(); | int width=image.SX(); |
| Line 359 static void _load(Request& r, const Stri | Line 368 static void _load(Request& r, const Stri |
| static_cast<VImage *>(r.self)->set(&file_name, width, height, &image); | static_cast<VImage *>(r.self)->set(&file_name, width, height, &image); |
| } | } |
| /** ^image.create[width;height] bgcolor=white | |
| ^image.create[width;height;bgcolor] | |
| */ | |
| static void _create(Request& r, const String& method_name, MethodParams *params) { | static void _create(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| int width=(int)r.process(params->get(0)).as_double(); | int width=params->as_int(0, "width must be int", r); |
| int height=(int)r.process(params->get(1)).as_double(); | int height=params->as_int(1, "height must be int", r); |
| int bgcolor_value=0xffFFff; | int bgcolor_value=0xffFFff; |
| if(params->size()>2) | if(params->size()>2) |
| bgcolor_value=(int)r.process(params->get(2)).as_double(); | bgcolor_value=params->as_int(2, "color must be int", r); |
| gdImage& image=*new(pool) gdImage(pool); | gdImage& image=*new(pool) gdImage(pool); |
| image.Create(width, height); | image.Create(width, height); |
| image.FilledRectangle(0, 0, width-1, height-1, image.Color(bgcolor_value)); | image.FilledRectangle(0, 0, width-1, height-1, image.Color(bgcolor_value)); |
| static_cast<VImage *>(r.self)->set(0, width, height, &image); | static_cast<VImage *>(r.self)->set(0, width, height, &image); |
| } | } |
| /// ^image.gif[] | |
| static void _gif(Request& r, const String& method_name, MethodParams *params) { | static void _gif(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.self)->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| Line 391 static void _gif(Request& r, const Strin | Line 396 static void _gif(Request& r, const Strin |
| String out(pool); image->Gif(out); | String out(pool); image->Gif(out); |
| VFile& vfile=*new(pool) VFile(pool); | VFile& vfile=*new(pool) VFile(pool); |
| String& image_gif=*new(pool) String(pool, "image/gif"); | Value *content_type=new(pool) VString(*new(pool) String(pool, "image/gif")); |
| vfile.set(false/*not tainted*/, | vfile.set(false/*not tainted*/, |
| out.cstr(String::UL_AS_IS), out.size(), 0, &image_gif); | out.cstr(), out.size(), 0, content_type); |
| r.write_no_lang(vfile); | r.write_no_lang(vfile); |
| } | } |
| /// ^image.line(x0;y0;x1;y1;color) | |
| static void _line(Request& r, const String& method_name, MethodParams *params) { | static void _line(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.self)->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| image->Line( | image->Line( |
| (int)r.process(params->get(0)).as_double(), | params->as_int(0, "x0 must be int", r), |
| (int)r.process(params->get(1)).as_double(), | params->as_int(1, "y0 must be int", r), |
| (int)r.process(params->get(2)).as_double(), | params->as_int(2, "x1 must be int", r), |
| (int)r.process(params->get(3)).as_double(), | params->as_int(3, "y1 must be int", r), |
| image->Color((int)r.process(params->get(4)).as_double())); | image->Color(params->as_int(4, "color must be int", r))); |
| } | } |
| /// ^image.fill(x;y;color) | |
| static void _fill(Request& r, const String& method_name, MethodParams *params) { | static void _fill(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.self)->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| image->Fill( | image->Fill( |
| (int)r.process(params->get(0)).as_double(), | params->as_int(0, "x must be int", r), |
| (int)r.process(params->get(1)).as_double(), | params->as_int(1, "y must be int", r), |
| image->Color((int)r.process(params->get(2)).as_double())); | image->Color(params->as_int(2, "color must be int", r))); |
| } | } |
| /// ^image.rectangle(x0;y0;x1;y1;color) | |
| static void _rectangle(Request& r, const String& method_name, MethodParams *params) { | static void _rectangle(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.self)->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| image->Rectangle( | image->Rectangle( |
| (int)r.process(params->get(0)).as_double(), | params->as_int(0, "x0 must be int", r), |
| (int)r.process(params->get(1)).as_double(), | params->as_int(1, "y0 must be int", r), |
| (int)r.process(params->get(2)).as_double(), | params->as_int(2, "x1 must be int", r), |
| (int)r.process(params->get(3)).as_double(), | params->as_int(3, "y1 must be int", r), |
| image->Color((int)r.process(params->get(4)).as_double())); | image->Color(params->as_int(4, "color must be int", r))); |
| } | } |
| /// ^image.bar(x0;y0;x1;y1;color) | |
| static void _bar(Request& r, const String& method_name, MethodParams *params) { | static void _bar(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.self)->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| image->FilledRectangle( | image->FilledRectangle( |
| (int)r.process(params->get(0)).as_double(), | params->as_int(0, "x0 must be int", r), |
| (int)r.process(params->get(1)).as_double(), | params->as_int(1, "y0 must be int", r), |
| (int)r.process(params->get(2)).as_double(), | params->as_int(2, "x1 must be int", r), |
| (int)r.process(params->get(3)).as_double(), | params->as_int(3, "y1 must be int", r), |
| image->Color((int)r.process(params->get(4)).as_double())); | image->Color(params->as_int(4, "color must be int", r))); |
| } | |
| #ifndef DOXYGEN | |
| static void add_point(Array::Item *value, void *info) { | |
| Array& row=*static_cast<Array *>(value); | |
| gdImage::Point **p=static_cast<gdImage::Point **>(info); | |
| (**p).x=row.get_string(0)->as_int(); | |
| (**p).y=row.get_string(1)->as_int(); | |
| (*p)++; | |
| } | } |
| #endif | |
| /// ^image.replace(color-source;color-dest)(x;y)... point coord pairs | |
| static void _replace(Request& r, const String& method_name, MethodParams *params) { | static void _replace(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.self)->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| if((params->size()-2)%2) // I see your thoughts, but that's more readable | Table *table=params->as_no_junction(2, "coordinates must not be code").get_table(); |
| PTHROW(0, 0, | if(!table) |
| throw Exception(0, 0, | |
| &method_name, | |
| "coordinates must be table"); | |
| gdImage::Point *all_p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*table->size()); | |
| gdImage::Point *add_p=all_p; | |
| table->for_each(add_point, &add_p); | |
| image->FilledPolygonReplaceColor(all_p, table->size(), | |
| image->Color(params->as_int(0, "src color must be int", r)), | |
| image->Color(params->as_int(1, "dest color must be int", r))); | |
| } | |
| static void _polyline(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| throw Exception(0, 0, | |
| &method_name, | &method_name, |
| "y coordinate missing"); | "does not contain an image"); |
| int n=(params->size()-2)/2; | Table *table=params->as_no_junction(1, "coordinates must not be code").get_table(); |
| if(!table) | |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | throw Exception(0, 0, |
| for(int i=0; i<n; i++) { | &method_name, |
| p[i].x=(int)r.process(params->get(2+i*2+0)).as_double(); | "coordinates must be table"); |
| p[i].y=(int)r.process(params->get(2+i*2+1)).as_double(); | |
| } | gdImage::Point *all_p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*table->size()); |
| image->FilledPolygonReplaceColor(p, n, | gdImage::Point *add_p=all_p; |
| image->Color((int)r.process(params->get(0)).as_double()), // src color | table->for_each(add_point, &add_p); |
| image->Color((int)r.process(params->get(1)).as_double()));// dest color | image->Polygon(all_p, table->size(), |
| image->Color(params->as_int(0, "color must be int", r)), | |
| false/*not closed*/); | |
| } | } |
| /// ^image.polygon(color)(x;y)... point coord pairs | |
| static void _polygon(Request& r, const String& method_name, MethodParams *params) { | static void _polygon(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.self)->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| if((params->size()-1)%2) // [I see..] see now? | Table *table=params->as_no_junction(1, "coordinates must not be code").get_table(); |
| PTHROW(0, 0, | if(!table) |
| &method_name, | throw Exception(0, 0, |
| "y coordinate missing"); | &method_name, |
| "coordinates must be table"); | |
| int n=(params->size()-1)/2; | |
| gdImage::Point *all_p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*table->size()); | |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | gdImage::Point *add_p=all_p; |
| for(int i=0; i<n; i++) { | table->for_each(add_point, &add_p); |
| p[i].x=(int)r.process(params->get(1+i*2+0)).as_double(); | image->Polygon(all_p, table->size(), |
| p[i].y=(int)r.process(params->get(1+i*2+1)).as_double(); | image->Color(params->as_int(0, "color must be int", r))); |
| } | |
| image->Polygon(p, n, | |
| image->Color((int)r.process(params->get(0)).as_double())); | |
| } | } |
| /// ^image.polybar(color)(x;y)... point coord pairs | |
| static void _polybar(Request& r, const String& method_name, MethodParams *params) { | static void _polybar(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.self)->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| if((params->size()-1)%2) // [I see..] see now? | Table *table=params->as_no_junction(1, "coordinates must not be code").get_table(); |
| PTHROW(0, 0, | if(!table) |
| &method_name, | throw Exception(0, 0, |
| "y coordinate missing"); | &method_name, |
| "coordinates must be table"); | |
| int n=(params->size()-1)/2; | |
| gdImage::Point *all_p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*table->size()); | |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | gdImage::Point *add_p=all_p; |
| for(int i=0; i<n; i++) { | table->for_each(add_point, &add_p); |
| p[i].x=(int)r.process(params->get(1+i*2+0)).as_double(); | image->FilledPolygon(all_p, table->size(), |
| p[i].y=(int)r.process(params->get(1+i*2+1)).as_double(); | image->Color(params->as_int(0, "color must be int", r))); |
| } | |
| image->FilledPolygon(p, n, | |
| image->Color((int)r.process(params->get(0)).as_double())); | |
| } | } |
| // font | // font |
| Line 555 static void _polybar(Request& r, const S | Line 577 static void _polybar(Request& r, const S |
| class Font : public Pooled { | class Font : public Pooled { |
| public: | public: |
| int height; /* Font heigth */ | const static int letter_spacing; |
| int space; /* Default char width */ | int height; ///< Font heigth |
| int monospace; ///< Default char width | |
| int spacebarspace; ///< spacebar width | |
| gdImage& ifont; | gdImage& ifont; |
| const String& alphabet; | const String& alphabet; |
| Font(Pool& pool, | Font(Pool& pool, |
| const String& aalphabet, | const String& aalphabet, |
| gdImage& aifont, int aheight, int aspace) : Pooled(pool), | gdImage& aifont, int aheight, int amonospace, int aspacebarspace) : Pooled(pool), |
| alphabet(aalphabet), | alphabet(aalphabet), |
| height(aheight), space(aspace), | height(aheight), monospace(amonospace), spacebarspace(aspacebarspace), |
| ifont(aifont) { | ifont(aifont) { |
| } | } |
| Line 577 public: | Line 601 public: |
| int index_width(int index) { | int index_width(int index) { |
| if(index<0) | if(index<0) |
| index=index_of('.'); | return spacebarspace; |
| if(index<0) | |
| return 0; | |
| int tr=ifont.GetTransparent(); | int tr=ifont.GetTransparent(); |
| for(int x=ifont.SX()-1; x>0; x--) { | for(int x=ifont.SX()-1; x>=0; x--) { |
| for(int y=0; y<height-1; y++) | for(int y=0; y<height-1; y++) |
| if(ifont.GetPixel(x, Y(y))!=tr) | if(ifont.GetPixel(x, Y(y))!=tr) |
| return x+2; | return x+1; |
| } | } |
| return 0; | return 0; |
| } | } |
| Line 595 public: | Line 617 public: |
| } | } |
| /* ******************************** string ********************************** */ | /* ******************************** string ********************************** */ |
| /* | |
| int string_width(const char *cstr){ | int string_width(const String& s){ |
| const char *cstr=s.cstr(); | |
| int result=0; | int result=0; |
| for(; *cstr; cstr++) | for(; *cstr; cstr++) |
| result+=index_width(index_of(*cstr)); | result+=index_width(index_of(*cstr)); |
| return result; | return result; |
| } | } |
| */ | |
| void string_display(gdImage& image, int x, int y, const String& s){ | void string_display(gdImage& image, int x, int y, const String& s){ |
| const char *cstr=s.cstr(String::UL_AS_IS); | const char *cstr=s.cstr(); |
| if(cstr) for(; *cstr; cstr++) { | if(cstr) for(; *cstr; cstr++) { |
| int index=index_of(*cstr); | int index=index_of(*cstr); |
| index_display(image, x, y, index); | index_display(image, x, y, index); |
| x+=space ? space : index_width(index); | x+=letter_spacing + (monospace ? monospace : index_width(index)); |
| } | } |
| } | } |
| }; | }; |
| /** | const int Font::letter_spacing=1; |
| ^image.font[alPHAbet;font-file-name.gif](height) | |
| ^image.font[alPHAbet;font-file-name.gif](height;width) | |
| */ | |
| static void _font(Request& r, const String& method_name, MethodParams *params) { | static void _font(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& valphabet=params->get_no_junction(0, "alphabet must not be code"); | const String& alphabet=params->as_string(0, "alphabet must not be code"); |
| Value& file_name=params->get_no_junction(1, "file_name must not be code"); | gdImage& image=*load(r, method_name, params->as_string(1, "file_name must not be code")); |
| int height=(int)r.process(params->get(2)).as_double(); | int spacebar_width=params->as_int(2, "spacebar_width must be int", r); |
| int monospace_width; | |
| int width=params->size()>3?(int)r.process(params->get(3)).as_double():0; | if(params->size()>3) { |
| monospace_width=params->as_int(3, "monospace_width must be int", r); | |
| if(!monospace_width) | |
| monospace_width=image.SX(); | |
| } else | |
| monospace_width=0; | |
| if(!alphabet.size()) | |
| throw Exception(0, 0, | |
| &method_name, | |
| "alphabet must not be empty"); | |
| static_cast<VImage *>(r.self)->font=new(pool) Font(pool, | static_cast<VImage *>(r.self)->font=new(pool) Font(pool, |
| valphabet.as_string(), | alphabet, |
| *load(r, method_name, file_name.as_string()), | image, |
| height, width); | image.SY() / alphabet.size(), monospace_width, spacebar_width); |
| } | } |
| /// ^image.text(x;y)[text] | |
| static void _text(Request& r, const String& method_name, MethodParams *params) { | static void _text(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| int x=(int)r.process(params->get(0)).as_double(); | int x=params->as_int(0, "x must be int", r); |
| int y=(int)r.process(params->get(1)).as_double(); | int y=params->as_int(1, "y must be int", r); |
| const String& s=r.process(params->get(2)).as_string(); | const String& s=params->as_string(2, "text must not be code"); |
| VImage& vimage=*static_cast<VImage *>(r.self); | VImage& vimage=*static_cast<VImage *>(r.self); |
| if(vimage.image) | if(vimage.image) |
| if(vimage.font) | if(vimage.font) |
| vimage.font->string_display(*vimage.image, x, y, s); | vimage.font->string_display(*vimage.image, x, y, s); |
| else | else |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "set the font first"); | "set the font first"); |
| else | else |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| } | } |
| static void _length(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| const String& s=params->as_string(0, "text must not be code"); | |
| VImage& vimage=*static_cast<VImage *>(r.self); | |
| if(vimage.image) | |
| if(vimage.font) { | |
| VInt& result=*new(pool) VInt(pool, vimage.font->string_width(s)); | |
| result.set_name(method_name); | |
| r.write_assign_lang(result); | |
| } else | |
| throw Exception(0, 0, | |
| &method_name, | |
| "set the font first"); | |
| else | |
| throw Exception(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| } | |
| static void _arc(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| throw Exception(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| image->Arc( | |
| params->as_int(0, "center_x must be int", r), | |
| params->as_int(1, "center_y must be int", r), | |
| params->as_int(2, "width must be int", r), | |
| params->as_int(3, "height must be int", r), | |
| params->as_int(4, "start degrees must be int", r), | |
| params->as_int(5, "end degrees must be int", r), | |
| image->Color(params->as_int(6, "cx must be int", r))); | |
| } | |
| static void _sector(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| throw Exception(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| image->Sector( | |
| params->as_int(0, "center_x must be int", r), | |
| params->as_int(1, "center_y must be int", r), | |
| params->as_int(2, "width must be int", r), | |
| params->as_int(3, "height must be int", r), | |
| params->as_int(4, "start degrees must be int", r), | |
| params->as_int(5, "end degrees must be int", r), | |
| image->Color(params->as_int(6, "color must be int", r))); | |
| } | |
| static void _circle(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.self)->image; | |
| if(!image) | |
| throw Exception(0, 0, | |
| &method_name, | |
| "does not contain an image"); | |
| int size=params->as_int(2, "radius must be int", r)*2; | |
| image->Arc( | |
| params->as_int(0, "center_x must be int", r), | |
| params->as_int(1, "center_y must be int", r), | |
| size, //w | |
| size, //h | |
| 0, //s | |
| 360, //e | |
| image->Color(params->as_int(3, "color must be int", r))); | |
| } | |
| gdImage& as_image(Pool& pool, const String& method_name, MethodParams *params, | |
| int index, const char *msg) { | |
| Value& value=params->as_no_junction(index, msg); | |
| if(strcmp(value.type(), VIMAGE_TYPE)!=0) | |
| throw Exception(0, 0, | |
| &method_name, | |
| msg); | |
| gdImage *src=static_cast<VImage *>(&value)->image; | |
| if(!src) | |
| throw Exception(0, 0, | |
| &method_name, | |
| msg); | |
| return *src; | |
| } | |
| static void _copy(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *dest=static_cast<VImage *>(r.self)->image; | |
| if(!dest) | |
| throw Exception(0, 0, | |
| &method_name, | |
| "self does not contain an image"); | |
| gdImage& src=as_image(pool, method_name, params, 0, "src must be image"); | |
| int sx=params->as_int(1, "src_x must be int", r); | |
| int sy=params->as_int(2, "src_y must be int", r); | |
| int sw=params->as_int(3, "src_w must be int", r); | |
| int sh=params->as_int(4, "src_h must be int", r); | |
| int dx=params->as_int(5, "dest_x must be int", r); | |
| int dy=params->as_int(6, "dest_y must be int", r); | |
| if(params->size()>1+2+2+2) { | |
| int dw=params->as_int(1+2+2+2, "dest_w must be int", r); | |
| int dh=(int)(params->size()>1+2+2+2+1? | |
| params->as_int(1+2+2+2+1, "dest_h must be int", r):sh*(((double)dw)/((double)sw))); | |
| int tolerance=params->size()>1+2+2+2+2? | |
| params->as_int(1+2+2+2+2, "tolerance must be int", r):150; | |
| src.CopyResampled(*dest, dx, dy, sx, sy, dw, dh, sw, sh, tolerance); | |
| } else | |
| src.Copy(*dest, dx, dy, sx, sy, sw, sh); | |
| } | |
| // constructor | // constructor |
| MImage::MImage(Pool& apool) : Methoded(apool) { | MImage::MImage(Pool& apool) : Methoded(apool) { |
| Line 664 MImage::MImage(Pool& apool) : Methoded(a | Line 820 MImage::MImage(Pool& apool) : Methoded(a |
| // ^image:measure[DATA] | // ^image:measure[DATA] |
| add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 1); | add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 1); |
| /// ^image.html[] | // ^image.html[] |
| /// ^image.html[hash] | // ^image.html[hash] |
| add_native_method("html", Method::CT_DYNAMIC, _html, 0, 1); | add_native_method("html", Method::CT_DYNAMIC, _html, 0, 1); |
| /// ^image.load[background.gif] | // ^image.load[background.gif] |
| add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1); | add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1); |
| /// ^image.create[width;height] bgcolor=white | // ^image.create[width;height] bgcolor=white |
| /// ^image.create[width;height;bgcolor] | // ^image.create[width;height;bgcolor] |
| add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3); | add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3); |
| /// ^image.gif[] | // ^image.gif[] |
| add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 0); | add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 0); |
| /// ^image.line(x0;y0;x1;y1;color) | // ^image.line(x0;y0;x1;y1;color) |
| add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5); | add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5); |
| /// ^image.fill(x;y;color) | // ^image.fill(x;y;color) |
| add_native_method("fill", Method::CT_DYNAMIC, _fill, 3, 3); | add_native_method("fill", Method::CT_DYNAMIC, _fill, 3, 3); |
| /// ^image.rectangle(x0;y0;x1;y1;color) | // ^image.rectangle(x0;y0;x1;y1;color) |
| add_native_method("rectangle", Method::CT_DYNAMIC, _rectangle, 5, 5); | add_native_method("rectangle", Method::CT_DYNAMIC, _rectangle, 5, 5); |
| /// ^image.bar(x0;y0;x1;y1;color) | // ^image.bar(x0;y0;x1;y1;color) |
| add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5); | add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5); |
| /// ^image.replace(color-source;color-dest)(x;y)... point coord pairs | // ^image.replace(color-source;color-dest)[table x:y] |
| add_native_method("replace", Method::CT_DYNAMIC, _replace, 2+3*2, 2+100*2); | add_native_method("replace", Method::CT_DYNAMIC, _replace, 3, 3); |
| /// ^image.polygon(color)(x;y)... point coord pairs | // ^image.polyline(color)[table x:y] |
| add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 1+3*2, 1+100*2); | add_native_method("polyline", Method::CT_DYNAMIC, _polyline, 2, 2); |
| /// ^image.polybar(color)(x;y)... point coord pairs | // ^image.polygon(color)[table x:y] |
| add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 1+3*2, 1+100*2); | add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 2, 2); |
| /// ^image.font[alPHAbet;font-file-name.gif](height) | // ^image.polybar(color)[table x:y] |
| /// ^image.font[alPHAbet;font-file-name.gif](height;width) | add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 2, 2); |
| // ^image.font[alPHAbet;font-file-name.gif](spacebar_width) | |
| // ^image.font[alPHAbet;font-file-name.gif](spacebar_width;width) | |
| add_native_method("font", Method::CT_DYNAMIC, _font, 3, 4); | add_native_method("font", Method::CT_DYNAMIC, _font, 3, 4); |
| /// ^image.text(x;y)[text] | // ^image.text(x;y)[text] |
| add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3); | add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3); |
| // ^image.ngth[text] | |
| add_native_method("length", Method::CT_DYNAMIC, _length, 1, 1); | |
| // ^image.arc(center x;center y;width;height;start in degrees;end in degrees;color) | |
| add_native_method("arc", Method::CT_DYNAMIC, _arc, 7, 7); | |
| // ^image.sector(center x;center y;width;height;start in degrees;end in degrees;color) | |
| add_native_method("sector", Method::CT_DYNAMIC, _sector, 7, 7); | |
| // ^image.circle(center x;center y;r;color) | |
| add_native_method("circle", Method::CT_DYNAMIC, _circle, 4, 4); | |
| // ^image.copy[source](src x;src y;src w;src h;dst x;dst y[;dest w[;dest h[;tolerance]]]) | |
| add_native_method("copy", Method::CT_DYNAMIC, _copy, 1+2+2+2, (1+2+2+2)+2+1); | |
| } | } |
| // global variable | // global variable |