128 lines
3.7 KiB
C++
Executable File
128 lines
3.7 KiB
C++
Executable File
// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
|
|
|
|
#pragma once
|
|
|
|
#include <cairo.h>
|
|
#include "CanvasError.h"
|
|
#include <functional>
|
|
#include <nan.h>
|
|
#include <stdint.h> // node < 7 uses libstdc++ on macOS which lacks complete c++11
|
|
#include <v8.h>
|
|
|
|
#ifdef HAVE_JPEG
|
|
#include <jpeglib.h>
|
|
#include <jerror.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_GIF
|
|
#include <gif_lib.h>
|
|
|
|
#if GIFLIB_MAJOR > 5 || GIFLIB_MAJOR == 5 && GIFLIB_MINOR >= 1
|
|
#define GIF_CLOSE_FILE(gif) DGifCloseFile(gif, NULL)
|
|
#else
|
|
#define GIF_CLOSE_FILE(gif) DGifCloseFile(gif)
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef HAVE_RSVG
|
|
#include <librsvg/rsvg.h>
|
|
// librsvg <= 2.36.1, identified by undefined macro, needs an extra include
|
|
#ifndef LIBRSVG_CHECK_VERSION
|
|
#include <librsvg/rsvg-cairo.h>
|
|
#endif
|
|
#endif
|
|
|
|
using JPEGDecodeL = std::function<uint32_t (uint8_t* const src)>;
|
|
|
|
class Image: public Nan::ObjectWrap {
|
|
public:
|
|
char *filename;
|
|
int width, height;
|
|
int naturalWidth, naturalHeight;
|
|
static Nan::Persistent<v8::FunctionTemplate> constructor;
|
|
static void Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target);
|
|
static NAN_METHOD(New);
|
|
static NAN_GETTER(GetComplete);
|
|
static NAN_GETTER(GetWidth);
|
|
static NAN_GETTER(GetHeight);
|
|
static NAN_GETTER(GetNaturalWidth);
|
|
static NAN_GETTER(GetNaturalHeight);
|
|
static NAN_GETTER(GetDataMode);
|
|
static NAN_SETTER(SetDataMode);
|
|
static NAN_SETTER(SetWidth);
|
|
static NAN_SETTER(SetHeight);
|
|
static NAN_METHOD(GetSource);
|
|
static NAN_METHOD(SetSource);
|
|
inline uint8_t *data(){ return cairo_image_surface_get_data(_surface); }
|
|
inline int stride(){ return cairo_image_surface_get_stride(_surface); }
|
|
static int isPNG(uint8_t *data);
|
|
static int isJPEG(uint8_t *data);
|
|
static int isGIF(uint8_t *data);
|
|
static int isSVG(uint8_t *data, unsigned len);
|
|
static int isBMP(uint8_t *data, unsigned len);
|
|
static cairo_status_t readPNG(void *closure, unsigned char *data, unsigned len);
|
|
inline int isComplete(){ return COMPLETE == state; }
|
|
cairo_surface_t *surface();
|
|
cairo_status_t loadSurface();
|
|
cairo_status_t loadFromBuffer(uint8_t *buf, unsigned len);
|
|
cairo_status_t loadPNGFromBuffer(uint8_t *buf);
|
|
cairo_status_t loadPNG();
|
|
void clearData();
|
|
#ifdef HAVE_RSVG
|
|
cairo_status_t loadSVGFromBuffer(uint8_t *buf, unsigned len);
|
|
cairo_status_t loadSVG(FILE *stream);
|
|
cairo_status_t renderSVGToSurface();
|
|
#endif
|
|
#ifdef HAVE_GIF
|
|
cairo_status_t loadGIFFromBuffer(uint8_t *buf, unsigned len);
|
|
cairo_status_t loadGIF(FILE *stream);
|
|
#endif
|
|
#ifdef HAVE_JPEG
|
|
cairo_status_t loadJPEGFromBuffer(uint8_t *buf, unsigned len);
|
|
cairo_status_t loadJPEG(FILE *stream);
|
|
void jpegToARGB(jpeg_decompress_struct* args, uint8_t* data, uint8_t* src, JPEGDecodeL decode);
|
|
cairo_status_t decodeJPEGIntoSurface(jpeg_decompress_struct *info);
|
|
cairo_status_t decodeJPEGBufferIntoMimeSurface(uint8_t *buf, unsigned len);
|
|
cairo_status_t assignDataAsMime(uint8_t *data, int len, const char *mime_type);
|
|
#endif
|
|
cairo_status_t loadBMPFromBuffer(uint8_t *buf, unsigned len);
|
|
cairo_status_t loadBMP(FILE *stream);
|
|
CanvasError errorInfo;
|
|
void loaded();
|
|
cairo_status_t load();
|
|
Image();
|
|
|
|
enum {
|
|
DEFAULT
|
|
, LOADING
|
|
, COMPLETE
|
|
} state;
|
|
|
|
enum data_mode_t {
|
|
DATA_IMAGE = 1
|
|
, DATA_MIME = 2
|
|
} data_mode;
|
|
|
|
typedef enum {
|
|
UNKNOWN
|
|
, GIF
|
|
, JPEG
|
|
, PNG
|
|
, SVG
|
|
} type;
|
|
|
|
static type extension(const char *filename);
|
|
|
|
private:
|
|
cairo_surface_t *_surface;
|
|
uint8_t *_data = nullptr;
|
|
int _data_len;
|
|
#ifdef HAVE_RSVG
|
|
RsvgHandle *_rsvg;
|
|
bool _is_svg;
|
|
int _svg_last_width;
|
|
int _svg_last_height;
|
|
#endif
|
|
~Image();
|
|
};
|