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| version 1.16, 2001/04/12 16:26:20 | version 1.37, 2001/09/01 14:47:11 |
|---|---|
| Line 7 | Line 7 |
| $Id$ | $Id$ |
| */ | */ |
| static const char *RCSId="$Id$"; | |
| #include "pa_config_includes.h" | /* |
| jpegsize: gets the width and height (in pixels) of a jpeg file | |
| #include <stdio.h> | 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 | |
| */ | |
| #ifdef WIN32 | #include "pa_config_includes.h" |
| # include "smtp/smtp.h" | |
| #endif | |
| #include "gif.h" | #include "gif.h" |
| Line 23 | Line 27 |
| #include "pa_vfile.h" | #include "pa_vfile.h" |
| #include "pa_vimage.h" | #include "pa_vimage.h" |
| // global var | // defines |
| #define IMAGE_CLASS_NAME "image" | |
| // class | |
| VStateless_class *image_class; | class MImage : public Methoded { |
| public: // VStateless_class | |
| Value *create_new_value(Pool& pool) { return new(pool) VImage(pool); } | |
| public: | |
| MImage(Pool& pool); | |
| public: // Methoded | |
| bool used_directly() { return true; } | |
| }; | |
| // helpers | // helpers |
| /// simple buffered reader[from memory/file], used in _measure | |
| class Measure_reader { | class Measure_reader { |
| public: | public: |
| enum { READ_CHUNK_SIZE=0x400 };// 1K | enum { READ_CHUNK_SIZE=0x400*10 };// 10K |
| 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 39 public: | Line 58 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 65 private: | Line 84 private: |
| size_t size; | size_t size; |
| }; | }; |
| // GIF | /// GIF file header |
| struct GIF_Header { | struct GIF_Header { |
| char type[3]; // 'GIF' | char type[3]; // 'GIF' |
| char version[3]; | char version[3]; |
| Line 76 struct GIF_Header { | Line 95 struct GIF_Header { |
| char nulls; | char nulls; |
| }; | }; |
| // JPEG | /// 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 | |
| }; | }; |
| struct JPG_Frame { | /// JPEG frame header |
| char length[2]; // length of image marker | struct JPG_Size_segment_body { |
| char data; // data precision of bits/sample | char data; //< data precision of bits/sample |
| char height[2]; // image height | unsigned char height[2]; //< image height |
| char width[2]; // image width | unsigned 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, | PTHROW(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) | |
| PTHROW(0, 0, | PTHROW(0, 0, |
| origin_string, | origin_string, |
| "bad image file - GIF signature not found"); | "not GIF file - signature not found"); |
| 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); |
| } | } |
| 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; | void *buf; |
| const unsigned char COM=0xFE; | const size_t prefix_size=2; |
| if(reader.read(buf, prefix_size)<prefix_size) | |
| unsigned char *screenD_buf; | |
| unsigned char *h_buf=0; | |
| bool flag=false; | |
| unsigned char *prefix; | |
| const prefix_size=2; | |
| if(reader.read(prefix, prefix_size)<prefix_size) | |
| PTHROW(0, 0, | PTHROW(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, | PTHROW(0, 0, |
| origin_string, | origin_string, |
| "broken JPEG file - second byte of header is not 0x%02X", SOI); | "not JPEG file - signature not found"); |
| 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, | PTHROW(0, 0, |
| origin_string, | origin_string, |
| "broken JPEG file - APP0 frame not found"); | "broken JPEG file - size frame not found"); |
| } | } |
| // measure center | // measure center |
| Line 209 void measure(Pool& pool, const String& f | Line 219 void measure(Pool& pool, const String& f |
| "can not determine image type - no file name extension"); | "can not determine image type - no file name extension"); |
| } | } |
| // read from somewhere | /// used by image: _measure / read_mem |
| struct Read_mem_info { | struct Read_mem_info { |
| unsigned char *ptr; | unsigned char *ptr; |
| unsigned char *eof; | unsigned char *eof; |
| Line 223 static size_t read_mem(void*& buf, size_ | Line 232 static size_t read_mem(void*& buf, size_ |
| return read_size; | return read_size; |
| } | } |
| /// used by image: _measure / read_disk | |
| struct Read_disk_info { | struct Read_disk_info { |
| const String *file_spec; | const String *file_spec; |
| size_t offset; | size_t offset; |
| Line 244 static size_t read_disk(void*& buf, size | Line 254 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, Array *params) { | |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& data=*static_cast<Value *>(params->get(0)); | Value& data=params->as_no_junction(0, "data must not be code"); |
| // forcing [this body type] | |
| r.fail_if_junction_(true, data, method_name, "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 276 static void _measure(Request& r, const S | Line 283 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 | |
| struct Attrib_info { | struct Attrib_info { |
| String *tag; | String *tag; ///< html tag being constructed |
| Hash *skip; | Hash *skip; ///< tag attributes not to append to tag string [to skip] |
| }; | }; |
| 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); |
| Line 289 static void append_attrib_pair(const Has | Line 297 static void append_attrib_pair(const Has |
| 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[] | static void _html(Request& r, const String& method_name, MethodParams *params) { |
| /// ^image.html[hash] | |
| static void _html(Request& r, const String& method_name, Array *params) { | |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| String tag(pool); | String tag(pool); |
| tag << "<img"; | tag << "<img"; |
| 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=static_cast<Value *>(params->get(0))->get_hash()) { | if(attribs=params->get(0).get_hash()) { |
| Attrib_info attrib_info={&tag, 0}; | Attrib_info attrib_info={&tag, 0}; |
| attribs->for_each(append_attrib_pair, &attrib_info); | attribs->for_each(append_attrib_pair, &attrib_info); |
| } else | } else |
| Line 325 static gdImage *load(Request& r, const S | Line 331 static gdImage *load(Request& r, const S |
| 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_NAME); |
| 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) | |
| PTHROW(0, 0, | |
| &file_name, | |
| "is not in GIF format"); | |
| return ℑ | return ℑ |
| } else { | } else { |
| PTHROW(0, 0, | PTHROW(0, 0, |
| Line 337 static gdImage *load(Request& r, const S | Line 347 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, Array *params) { | |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& vfile_name=*static_cast<Value *>(params->get(0)); | Value& vfile_name=params->as_no_junction(0, "file name must not be code"); |
| // forcing [this body type] | |
| r.fail_if_junction_(true, vfile_name, method_name, "file name must not be code"); | |
| const String& file_name=vfile_name.as_string(); | const String& file_name=vfile_name.as_string(); |
| gdImage& image=*load(r, method_name, file_name); | gdImage& image=*load(r, method_name, file_name); |
| Line 352 static void _load(Request& r, const Stri | Line 359 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 | static void _create(Request& r, const String& method_name, MethodParams *params) { |
| /// ^image.create[width;height;bgcolor] | |
| static void _create(Request& r, const String& method_name, Array *params) { | |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| int width=(int)r.process(*static_cast<Value *>(params->get(0))).as_double(); | int width=params->as_int(0, r); |
| int height=(int)r.process(*static_cast<Value *>(params->get(1))).as_double(); | int height=params->as_int(1, r); |
| int bgcolor_value=0xffFFff; | int bgcolor_value=0xffFFff; |
| if(params->size()>2) | if(params->size()>2) |
| bgcolor_value= | bgcolor_value=params->as_int(2, r); |
| (int)r.process(*static_cast<Value *>(params->get(2))).as_double(); | |
| 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, Array *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; |
| Line 385 static void _gif(Request& r, const Strin | Line 388 static void _gif(Request& r, const Strin |
| VFile& vfile=*new(pool) VFile(pool); | VFile& vfile=*new(pool) VFile(pool); |
| String& image_gif=*new(pool) String(pool, "image/gif"); | String& image_gif=*new(pool) String(pool, "image/gif"); |
| vfile.set(false/*not tainted*/, out.cstr(), out.size(), 0, &image_gif); | vfile.set(false/*not tainted*/, |
| out.cstr(String::UL_AS_IS), out.size(), 0, &image_gif); | |
| 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, Array *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; |
| Line 401 static void _line(Request& r, const Stri | Line 404 static void _line(Request& r, const Stri |
| "does not contain an image"); | "does not contain an image"); |
| image->Line( | image->Line( |
| (int)r.process(*static_cast<Value *>(params->get(0))).as_double(), | params->as_int(0, r), |
| (int)r.process(*static_cast<Value *>(params->get(1))).as_double(), | params->as_int(1, r), |
| (int)r.process(*static_cast<Value *>(params->get(2))).as_double(), | params->as_int(2, r), |
| (int)r.process(*static_cast<Value *>(params->get(3))).as_double(), | params->as_int(3, r), |
| image->Color((int)r.process(*static_cast<Value *>(params->get(4))).as_double())); | image->Color(params->as_int(4, 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, Array *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; |
| Line 419 static void _fill(Request& r, const Stri | Line 421 static void _fill(Request& r, const Stri |
| "does not contain an image"); | "does not contain an image"); |
| image->Fill( | image->Fill( |
| (int)r.process(*static_cast<Value *>(params->get(0))).as_double(), | params->as_int(0, r), |
| (int)r.process(*static_cast<Value *>(params->get(1))).as_double(), | params->as_int(1, r), |
| image->Color((int)r.process(*static_cast<Value *>(params->get(2))).as_double())); | image->Color(params->as_int(2, 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, Array *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; |
| Line 435 static void _rectangle(Request& r, const | Line 436 static void _rectangle(Request& r, const |
| "does not contain an image"); | "does not contain an image"); |
| image->Rectangle( | image->Rectangle( |
| (int)r.process(*static_cast<Value *>(params->get(0))).as_double(), | params->as_int(0, r), |
| (int)r.process(*static_cast<Value *>(params->get(1))).as_double(), | params->as_int(1, r), |
| (int)r.process(*static_cast<Value *>(params->get(2))).as_double(), | params->as_int(2, r), |
| (int)r.process(*static_cast<Value *>(params->get(3))).as_double(), | params->as_int(3, r), |
| image->Color((int)r.process(*static_cast<Value *>(params->get(4))).as_double())); | image->Color(params->as_int(4, 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, Array *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; |
| Line 453 static void _bar(Request& r, const Strin | Line 453 static void _bar(Request& r, const Strin |
| "does not contain an image"); | "does not contain an image"); |
| image->FilledRectangle( | image->FilledRectangle( |
| (int)r.process(*static_cast<Value *>(params->get(0))).as_double(), | params->as_int(0, r), |
| (int)r.process(*static_cast<Value *>(params->get(1))).as_double(), | params->as_int(1, r), |
| (int)r.process(*static_cast<Value *>(params->get(2))).as_double(), | params->as_int(2, r), |
| (int)r.process(*static_cast<Value *>(params->get(3))).as_double(), | params->as_int(3, r), |
| image->Color((int)r.process(*static_cast<Value *>(params->get(4))).as_double())); | image->Color(params->as_int(4, r))); |
| } | } |
| /// ^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, Array *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; |
| Line 479 static void _replace(Request& r, const S | Line 478 static void _replace(Request& r, const S |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); |
| for(int i=0; i<n; i++) { | for(int i=0; i<n; i++) { |
| p[i].x=(int)r.process(*static_cast<Value *>(params->get(2+i*2+0))).as_double(); | p[i].x=params->as_int(2+i*2+0, r); |
| p[i].y=(int)r.process(*static_cast<Value *>(params->get(2+i*2+1))).as_double(); | p[i].y=params->as_int(2+i*2+1, r); |
| } | } |
| image->FilledPolygonReplaceColor(p, n, | image->FilledPolygonReplaceColor(p, n, |
| image->Color((int)r.process(*static_cast<Value *>(params->get(0))).as_double()), // src color | image->Color(params->as_int(0, r)), // src color |
| image->Color((int)r.process(*static_cast<Value *>(params->get(1))).as_double()));// dest color | image->Color(params->as_int(1, r)));// dest color |
| } | } |
| /// ^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, Array *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; |
| Line 506 static void _polygon(Request& r, const S | Line 504 static void _polygon(Request& r, const S |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); |
| for(int i=0; i<n; i++) { | for(int i=0; i<n; i++) { |
| p[i].x=(int)r.process(*static_cast<Value *>(params->get(1+i*2+0))).as_double(); | p[i].x=params->as_int(2+i*2+0, r); |
| p[i].y=(int)r.process(*static_cast<Value *>(params->get(1+i*2+1))).as_double(); | p[i].y=params->as_int(2+i*2+1, r); |
| } | } |
| image->Polygon(p, n, | image->Polygon(p, n, |
| image->Color((int)r.process(*static_cast<Value *>(params->get(0))).as_double())); | image->Color(params->as_int(0, r))); |
| } | } |
| /// ^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, Array *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; |
| Line 532 static void _polybar(Request& r, const S | Line 529 static void _polybar(Request& r, const S |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); |
| for(int i=0; i<n; i++) { | for(int i=0; i<n; i++) { |
| p[i].x=(int)r.process(*static_cast<Value *>(params->get(1+i*2+0))).as_double(); | p[i].x=params->as_int(2+i*2+0, r); |
| p[i].y=(int)r.process(*static_cast<Value *>(params->get(1+i*2+1))).as_double(); | p[i].y=params->as_int(2+i*2+1, r); |
| } | } |
| image->FilledPolygon(p, n, | image->FilledPolygon(p, n, |
| image->Color((int)r.process(*static_cast<Value *>(params->get(0))).as_double())); | image->Color(params->as_int(0, r))); |
| } | } |
| // font | // font |
| #define Y(y)(y+index*height+1) | #define Y(y)(y+index*height+1) |
| /// simple gdImage-based font storage & text output | |
| class Font : public Pooled { | class Font : public Pooled { |
| public: | public: |
| int height; /* Font heigth */ | const static int kerning; |
| 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 567 public: | Line 568 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 599 public: | Line 598 public: |
| 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+=kerning + (monospace ? monospace : index_width(index)); |
| } | } |
| } | } |
| }; | }; |
| /// ^image.font[alPHAbet;font-file-name.gif](height) | const int Font::kerning=1; |
| /// ^image.font[alPHAbet;font-file-name.gif](height;width) | |
| static void _font(Request& r, const String& method_name, Array *params) { | |
| Pool& pool=r.pool(); | |
| Value& valphabet=*static_cast<Value *>(params->get(0)); | |
| // forcing [this body type] | |
| r.fail_if_junction_(true, valphabet, method_name, "alphabet must not be code"); | |
| Value& file_name=*static_cast<Value *>(params->get(1)); | static void _font(Request& r, const String& method_name, MethodParams *params) { |
| // forcing [this body type] | Pool& pool=r.pool(); |
| r.fail_if_junction_(true, file_name, method_name, "file_name must not be code"); | |
| Value& vheight=*static_cast<Value *>(params->get(2)); | |
| int height=(int)r.process(vheight).as_double(); | |
| int width=0; | const String& alphabet=params->as_string(0, "alphabet must not be code"); |
| gdImage& image=*load(r, method_name, params->as_string(1, "file_name must not be code")); | |
| int spacebar_width=params->as_int(2, r); | |
| int monospace_width; | |
| if(params->size()>3) { | if(params->size()>3) { |
| Value& vwidth=*static_cast<Value *>(params->get(3)); | monospace_width=params->as_int(3, r); |
| width=(int)r.process(vwidth).as_double(); | if(!monospace_width) |
| } | monospace_width=image.SX(); |
| } else | |
| monospace_width=0; | |
| if(!alphabet.size()) | |
| PTHROW(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, Array *params) { | |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| int x=(int)r.process(*static_cast<Value *>(params->get(0))).as_double(); | int x=params->as_int(0, r); |
| int y=(int)r.process(*static_cast<Value *>(params->get(1))).as_double(); | int y=params->as_int(1, r); |
| const String& s= | const String& s=params->as_string(2, "text must not be code"); |
| r.process(*static_cast<Value *>(params->get(2))).as_string(); | |
| VImage& vimage=*static_cast<VImage *>(r.self); | VImage& vimage=*static_cast<VImage *>(r.self); |
| if(vimage.image) | if(vimage.image) |
| Line 655 static void _text(Request& r, const Stri | Line 651 static void _text(Request& r, const Stri |
| "does not contain an image"); | "does not contain an image"); |
| } | } |
| // initialize | // constructor |
| void initialize_image_class(Pool& pool, VStateless_class& vclass) { | |
| MImage::MImage(Pool& apool) : Methoded(apool) { | |
| set_name(*NEW String(pool(), IMAGE_CLASS_NAME)); | |
| // ^image:measure[DATA] | // ^image:measure[DATA] |
| vclass.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] |
| vclass.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] |
| vclass.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] |
| vclass.add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3); | add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3); |
| /// ^image.gif[] | // ^image.gif[] |
| vclass.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) |
| vclass.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) |
| vclass.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) |
| vclass.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) |
| vclass.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)(x;y)... point coord pairs |
| vclass.add_native_method("replace", Method::CT_DYNAMIC, _replace, 2+3*2, 2+100*2); | add_native_method("replace", Method::CT_DYNAMIC, _replace, 2+3*2, 2+100*2); |
| /// ^image.polygon(color)(x;y)... point coord pairs | // ^image.polygon(color)(x;y)... point coord pairs |
| vclass.add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 1+3*2, 1+100*2); | add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 1+3*2, 1+100*2); |
| /// ^image.polybar(color)(x;y)... point coord pairs | // ^image.polybar(color)(x;y)... point coord pairs |
| vclass.add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 1+3*2, 1+100*2); | add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 1+3*2, 1+100*2); |
| /// ^image.font[alPHAbet;font-file-name.gif](height) | // ^image.font[alPHAbet;font-file-name.gif](spacebar_width) |
| /// ^image.font[alPHAbet;font-file-name.gif](height;width) | // ^image.font[alPHAbet;font-file-name.gif](spacebar_width;width) |
| vclass.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] |
| vclass.add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3); | add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3); |
| } | } |
| // global variable | |
| Methoded *image_class; | |
| // creator | |
| Methoded *MImage_create(Pool& pool) { | |
| return image_class=new(pool) MImage(pool); | |
| } |