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100 lines
3.1 KiB
100 lines
3.1 KiB
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//
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// Image.h
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//
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// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
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//
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#ifndef __NODE_IMAGE_H__
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#define __NODE_IMAGE_H__
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#include "Canvas.h"
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#ifdef HAVE_JPEG
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#include <jpeglib.h>
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#include <jerror.h>
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#endif
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#ifdef HAVE_GIF
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#include <gif_lib.h>
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#endif
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class Image: public node::ObjectWrap {
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public:
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char *filename;
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int width, height;
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Persistent<Function> onload;
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Persistent<Function> onerror;
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static Persistent<FunctionTemplate> constructor;
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static void Initialize(Handle<Object> target);
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static Handle<Value> New(const Arguments &args);
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static Handle<Value> GetSource(Local<String> prop, const AccessorInfo &info);
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static Handle<Value> GetOnload(Local<String> prop, const AccessorInfo &info);
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static Handle<Value> GetOnerror(Local<String> prop, const AccessorInfo &info);
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static Handle<Value> GetComplete(Local<String> prop, const AccessorInfo &info);
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static Handle<Value> GetWidth(Local<String> prop, const AccessorInfo &info);
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static Handle<Value> GetHeight(Local<String> prop, const AccessorInfo &info);
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static Handle<Value> GetDataMode(Local<String> prop, const AccessorInfo &info);
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static void SetSource(Local<String> prop, Local<Value> val, const AccessorInfo &info);
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static void SetOnload(Local<String> prop, Local<Value> val, const AccessorInfo &info);
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static void SetOnerror(Local<String> prop, Local<Value> val, const AccessorInfo &info);
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static void SetDataMode(Local<String> prop, Local<Value> val, const AccessorInfo &info);
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inline cairo_surface_t *surface(){ return _surface; }
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inline uint8_t *data(){ return cairo_image_surface_get_data(_surface); }
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inline int stride(){ return cairo_image_surface_get_stride(_surface); }
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static int isPNG(uint8_t *data);
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static int isJPEG(uint8_t *data);
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static int isGIF(uint8_t *data);
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static cairo_status_t readPNG(void *closure, unsigned char *data, unsigned len);
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inline int isComplete(){ return COMPLETE == state; }
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cairo_status_t loadSurface();
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cairo_status_t loadFromBuffer(uint8_t *buf, unsigned len);
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cairo_status_t loadPNGFromBuffer(uint8_t *buf);
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cairo_status_t loadPNG();
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void clearData();
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#ifdef HAVE_GIF
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cairo_status_t loadGIFFromBuffer(uint8_t *buf, unsigned len);
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cairo_status_t loadGIF(FILE *stream);
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#endif
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#ifdef HAVE_JPEG
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cairo_status_t loadJPEGFromBuffer(uint8_t *buf, unsigned len);
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cairo_status_t loadJPEG(FILE *stream);
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cairo_status_t decodeJPEGIntoSurface(jpeg_decompress_struct *info);
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#if CAIRO_VERSION_MINOR >= 10
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cairo_status_t decodeJPEGBufferIntoMimeSurface(uint8_t *buf, unsigned len);
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cairo_status_t assignDataAsMime(uint8_t *data, int len, const char *mime_type);
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#endif
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#endif
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void error(Local<Value> error);
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void loaded();
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cairo_status_t load();
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Image();
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enum {
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DEFAULT
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, LOADING
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, COMPLETE
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} state;
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enum data_mode_t {
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DATA_IMAGE = 1
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, DATA_MIME = 2
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} data_mode;
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typedef enum {
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UNKNOWN
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, GIF
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, JPEG
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, PNG
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} type;
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static type extension(const char *filename);
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private:
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cairo_surface_t *_surface;
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uint8_t *_data;
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int _data_len;
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~Image();
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};
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#endif
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