MadButterfly: nodejs/image

annotate nodejs/image_ldr.cc @ 776:77b561bb7929

Implement new algorithm to calculate the origin of the SVG elemnts so that we can implement object resize without changing the position of the object. However, the image does not work here since it does not use the transformation of the group.

author	wycc
date	Mon, 30 Aug 2010 08:56:44 +0800
parents	b346e4699e55
children	586e50f82c1f

rev	line source
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	1 /*! \file
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	2 * This file implements Javascript binding for img_ldr_t of MadButterfly.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	3 */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	4 #include <v8.h>
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	5
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	6 extern "C" {
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	7 #include "mb.h"
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	8 }
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	9
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	10 #include "mbfly_njs.h"
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	11
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	12 using namespace v8;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	13
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	14 #ifndef ASSERT
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	15 #define ASSERT(x)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	16 #endif
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	17
684 b346e4699e55 Add more comment for JS binding Thinker K.F. Li <thinker@branda.to> parents: 643 diff changeset	18 /*! \defgroup xnjsmb_img_ldr_js Javascript binding for image loader.
b346e4699e55 Add more comment for JS binding Thinker K.F. Li <thinker@branda.to> parents: 643 diff changeset	19 * \ingroup xnjsmb
640 9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	20 *
9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	21 * @{
9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	22 */
9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	23
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	24 static Persistent<ObjectTemplate> img_data_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	25
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	26 /*! \brief load() method of img_ldr Javascript objects.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	27 */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	28 static Handle<Value>
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	29 xnjsmb_img_ldr_load(const Arguments &args) {
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	30 HandleScope scope;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	31 int argc = args.Length();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	32 Handle<Object> self = args.This();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	33 char *img_id;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	34 mb_img_ldr_t *img_ldr;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	35 mb_img_data_t *img_data;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	36 Handle<Object> img_data_obj;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	37
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	38 if(argc != 1)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	39 THROW("Invalid number of arguments (!= 1)");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	40 if(!args[0]->IsString())
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	41 THROW("Invalid argument type");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	42
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	43 String::Utf8Value img_id_utf8(args[0]->ToString());
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	44 img_id = *img_id_utf8;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	45 img_ldr = (mb_img_ldr_t *)UNWRAP(self);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	46
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	47 img_data_obj = img_data_temp->NewInstance();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	48 ASSERT(img_data_obj);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	49
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	50 img_data = MB_IMG_LDR_LOAD(img_ldr, img_id);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	51 if(img_data == NULL)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	52 THROW("Can not load an image");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	53 WRAP(img_data_obj, img_data);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	54
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	55 scope.Close(img_data_obj);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	56
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	57 return img_data_obj;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	58 }
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	59
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	60 /*! \brief Constructor function of img_ldr Javascript objects.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	61 */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	62 static Handle<Value>
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	63 xnjsmb_img_ldr(const Arguments &args) {
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	64 HandleScope scope;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	65 int argc = args.Length();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	66 Handle<Object> self = args.This();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	67 char *path;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	68 mb_img_ldr_t *img_ldr;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	69
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	70 if(argc != 1)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	71 THROW("Invalid number of arguments (!= 1)");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	72 if(!args[0]->IsString())
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	73 THROW("Invalid argument type");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	74
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	75 String::Utf8Value pathutf8(args[0]->ToString());
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	76 path = *pathutf8;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	77
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	78 img_ldr = simple_mb_img_ldr_new(path);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	79 if(img_ldr == NULL)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	80 THROW("Can not create an image loader");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	81 WRAP(self, img_ldr);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	82
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	83 return Null();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	84 }
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	85
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	86 static Persistent<FunctionTemplate> xnjsmb_img_ldr_temp;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	87
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	88 static Handle<Value>
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	89 xnjsmb_img_ldr_new(const Arguments &args) {
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	90 HandleScope scope;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	91 int argc = args.Length();
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	92 Handle<Value> il_args[1];
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	93 Handle<Object> img_ldr;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	94 Handle<Function> func;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	95
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	96 if(argc != 1)
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	97 THROW("Invalid number of arguments (!= 1)");
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	98 if(!args[0]->IsString())
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	99 THROW("Invalid argument type");
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	100
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	101 il_args[0] = args[0];
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	102 func = xnjsmb_img_ldr_temp->GetFunction();
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	103 img_ldr = func->NewInstance(1, il_args);
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	104
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	105 scope.Close(img_ldr);
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	106 return img_ldr;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	107 }
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	108
640 9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	109 /* @} */
9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	110
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	111 /*! \brief Initialize image loader.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	112 *
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	113 * This function is called by init() in mbfly_njs.cc when the module
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	114 * being loaded.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	115 */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	116 void
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	117 xnjsmb_img_ldr_init_mb_rt_temp(Handle<Object> rt_temp) {
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	118 HandleScope scope;
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	119 Handle<FunctionTemplate> img_ldr_temp;
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	120 Handle<FunctionTemplate> img_ldr_new_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	121 Handle<ObjectTemplate> ldr_inst_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	122 Handle<ObjectTemplate> ldr_proto_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	123 Handle<FunctionTemplate> img_ldr_load_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	124 Handle<ObjectTemplate> _img_data_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	125
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	126 /* Setup object template for img_data_t object for Javascript */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	127 _img_data_temp = ObjectTemplate::New();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	128 _img_data_temp->SetInternalFieldCount(1);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	129 img_data_temp = Persistent<ObjectTemplate>::New(_img_data_temp);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	130
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	131 /* Setup img_ldr class */
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	132 img_ldr_temp = FunctionTemplate::New(xnjsmb_img_ldr);
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	133 img_ldr_temp->SetClassName(String::New("img_ldr"));
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	134 ldr_inst_temp = img_ldr_temp->InstanceTemplate();
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	135 ldr_inst_temp->SetInternalFieldCount(1);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	136
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	137 /* Set method load() for img_ldr */
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	138 ldr_proto_temp = img_ldr_temp->PrototypeTemplate();
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	139 img_ldr_load_temp = FunctionTemplate::New(xnjsmb_img_ldr_load);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	140 SET(ldr_proto_temp, "load", img_ldr_load_temp);
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	141
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	142 xnjsmb_img_ldr_temp = Persistent<FunctionTemplate>::New(img_ldr_temp);
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	143
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	144 /* Initialize img_ldr_new function */
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	145 img_ldr_new_temp = FunctionTemplate::New(xnjsmb_img_ldr_new);
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	146 SET(rt_temp, "img_ldr_new", img_ldr_new_temp->GetFunction());
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	147 }

Mercurial > MadButterfly

annotate nodejs/image_ldr.cc @ 776:77b561bb7929