Initial commit

hm_sunwell/node_modules/canvas/src/Canvas.cc

@@ -0,0 +1,673 @@
+//
+// Canvas.cc
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#include "Canvas.h"
+#include "PNG.h"
+#include "CanvasRenderingContext2d.h"
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <node_buffer.h>
+#include <node_version.h>
+#include <cairo-pdf.h>
+#include <cairo-svg.h>
+#include "closure.h"
+
+#ifdef HAVE_JPEG
+#include "JPEGStream.h"
+#endif
+
+Nan::Persistent<FunctionTemplate> Canvas::constructor;
+
+/*
+ * Initialize Canvas.
+ */
+
+void
+Canvas::Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target) {
+  Nan::HandleScope scope;
+
+  // Constructor
+  Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(Canvas::New);
+  constructor.Reset(ctor);
+  ctor->InstanceTemplate()->SetInternalFieldCount(1);
+  ctor->SetClassName(Nan::New("Canvas").ToLocalChecked());
+
+  // Prototype
+  Local<ObjectTemplate> proto = ctor->PrototypeTemplate();
+  Nan::SetPrototypeMethod(ctor, "toBuffer", ToBuffer);
+  Nan::SetPrototypeMethod(ctor, "streamPNGSync", StreamPNGSync);
+  Nan::SetPrototypeMethod(ctor, "streamPDFSync", StreamPDFSync);
+#ifdef HAVE_JPEG
+  Nan::SetPrototypeMethod(ctor, "streamJPEGSync", StreamJPEGSync);
+#endif
+  Nan::SetAccessor(proto, Nan::New("type").ToLocalChecked(), GetType);
+  Nan::SetAccessor(proto, Nan::New("stride").ToLocalChecked(), GetStride);
+  Nan::SetAccessor(proto, Nan::New("width").ToLocalChecked(), GetWidth, SetWidth);
+  Nan::SetAccessor(proto, Nan::New("height").ToLocalChecked(), GetHeight, SetHeight);
+
+  Nan::SetTemplate(proto, "PNG_NO_FILTERS", Nan::New<Uint32>(PNG_NO_FILTERS));
+  Nan::SetTemplate(proto, "PNG_FILTER_NONE", Nan::New<Uint32>(PNG_FILTER_NONE));
+  Nan::SetTemplate(proto, "PNG_FILTER_SUB", Nan::New<Uint32>(PNG_FILTER_SUB));
+  Nan::SetTemplate(proto, "PNG_FILTER_UP", Nan::New<Uint32>(PNG_FILTER_UP));
+  Nan::SetTemplate(proto, "PNG_FILTER_AVG", Nan::New<Uint32>(PNG_FILTER_AVG));
+  Nan::SetTemplate(proto, "PNG_FILTER_PAETH", Nan::New<Uint32>(PNG_FILTER_PAETH));
+  Nan::SetTemplate(proto, "PNG_ALL_FILTERS", Nan::New<Uint32>(PNG_ALL_FILTERS));
+
+  Nan::Set(target, Nan::New("Canvas").ToLocalChecked(), ctor->GetFunction());
+}
+
+/*
+ * Initialize a Canvas with the given width and height.
+ */
+
+NAN_METHOD(Canvas::New) {
+  if (!info.IsConstructCall()) {
+    return Nan::ThrowTypeError("Class constructors cannot be invoked without 'new'");
+  }
+
+  int width = 0, height = 0;
+  canvas_type_t type = CANVAS_TYPE_IMAGE;
+  if (info[0]->IsNumber()) width = info[0]->Uint32Value();
+  if (info[1]->IsNumber()) height = info[1]->Uint32Value();
+  if (info[2]->IsString()) type = !strcmp("pdf", *String::Utf8Value(info[2]))
+    ? CANVAS_TYPE_PDF
+    : !strcmp("svg", *String::Utf8Value(info[2]))
+      ? CANVAS_TYPE_SVG
+      : CANVAS_TYPE_IMAGE;
+  Canvas *canvas = new Canvas(width, height, type);
+  canvas->Wrap(info.This());
+  info.GetReturnValue().Set(info.This());
+}
+
+/*
+ * Get type string.
+ */
+
+NAN_GETTER(Canvas::GetType) {
+  Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.This());
+  info.GetReturnValue().Set(Nan::New<String>(canvas->isPDF() ? "pdf" : canvas->isSVG() ? "svg" : "image").ToLocalChecked());
+}
+
+/*
+ * Get stride.
+ */
+NAN_GETTER(Canvas::GetStride) {
+  Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.This());
+  info.GetReturnValue().Set(Nan::New<Number>(canvas->stride()));
+}
+
+/*
+ * Get width.
+ */
+
+NAN_GETTER(Canvas::GetWidth) {
+  Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.This());
+  info.GetReturnValue().Set(Nan::New<Number>(canvas->width));
+}
+
+/*
+ * Set width.
+ */
+
+NAN_SETTER(Canvas::SetWidth) {
+  if (value->IsNumber()) {
+    Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.This());
+    canvas->width = value->Uint32Value();
+    canvas->resurface(info.This());
+  }
+}
+
+/*
+ * Get height.
+ */
+
+NAN_GETTER(Canvas::GetHeight) {
+  Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.This());
+  info.GetReturnValue().Set(Nan::New<Number>(canvas->height));
+}
+
+/*
+ * Set height.
+ */
+
+NAN_SETTER(Canvas::SetHeight) {
+  if (value->IsNumber()) {
+    Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.This());
+    canvas->height = value->Uint32Value();
+    canvas->resurface(info.This());
+  }
+}
+
+/*
+ * Canvas::ToBuffer callback.
+ */
+
+static cairo_status_t
+toBuffer(void *c, const uint8_t *data, unsigned len) {
+  closure_t *closure = (closure_t *) c;
+
+  if (closure->len + len > closure->max_len) {
+    uint8_t *data;
+    unsigned max = closure->max_len;
+
+    do {
+      max *= 2;
+    } while (closure->len + len > max);
+
+    data = (uint8_t *) realloc(closure->data, max);
+    if (!data) return CAIRO_STATUS_NO_MEMORY;
+    closure->data = data;
+    closure->max_len = max;
+  }
+
+  memcpy(closure->data + closure->len, data, len);
+  closure->len += len;
+
+  return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * EIO toBuffer callback.
+ */
+
+#if NODE_VERSION_AT_LEAST(0, 6, 0)
+void
+Canvas::ToBufferAsync(uv_work_t *req) {
+#elif NODE_VERSION_AT_LEAST(0, 5, 4)
+void
+Canvas::EIO_ToBuffer(eio_req *req) {
+#else
+int
+Canvas::EIO_ToBuffer(eio_req *req) {
+#endif
+  closure_t *closure = (closure_t *) req->data;
+
+  closure->status = canvas_write_to_png_stream(
+      closure->canvas->surface()
+    , toBuffer
+    , closure);
+
+#if !NODE_VERSION_AT_LEAST(0, 5, 4)
+  return 0;
+#endif
+}
+
+/*
+ * EIO after toBuffer callback.
+ */
+
+#if NODE_VERSION_AT_LEAST(0, 6, 0)
+void
+Canvas::ToBufferAsyncAfter(uv_work_t *req) {
+#else
+int
+Canvas::EIO_AfterToBuffer(eio_req *req) {
+#endif
+
+  Nan::HandleScope scope;
+  closure_t *closure = (closure_t *) req->data;
+#if NODE_VERSION_AT_LEAST(0, 6, 0)
+  delete req;
+#else
+  ev_unref(EV_DEFAULT_UC);
+#endif
+
+  if (closure->status) {
+    Local<Value> argv[1] = { Canvas::Error(closure->status) };
+    closure->pfn->Call(1, argv);
+  } else {
+    Local<Object> buf = Nan::CopyBuffer((char*)closure->data, closure->len).ToLocalChecked();
+    memcpy(Buffer::Data(buf), closure->data, closure->len);
+    Local<Value> argv[2] = { Nan::Null(), buf };
+    closure->pfn->Call(2, argv);
+  }
+
+  closure->canvas->Unref();
+  delete closure->pfn;
+  closure_destroy(closure);
+  free(closure);
+
+#if !NODE_VERSION_AT_LEAST(0, 6, 0)
+  return 0;
+#endif
+}
+
+/*
+ * Convert PNG data to a node::Buffer, async when a
+ * callback function is passed.
+ */
+
+NAN_METHOD(Canvas::ToBuffer) {
+  cairo_status_t status;
+  uint32_t compression_level = 6;
+  uint32_t filter = PNG_ALL_FILTERS;
+  Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.This());
+
+  // TODO: async / move this out
+  if (canvas->isPDF() || canvas->isSVG()) {
+    cairo_surface_finish(canvas->surface());
+    closure_t *closure = (closure_t *) canvas->closure();
+
+    Local<Object> buf = Nan::CopyBuffer((char*) closure->data, closure->len).ToLocalChecked();
+    info.GetReturnValue().Set(buf);
+    return;
+  }
+
+  if (info.Length() >= 1 && info[0]->StrictEquals(Nan::New<String>("raw").ToLocalChecked())) {
+    // Return raw ARGB data -- just a memcpy()
+    cairo_surface_t *surface = canvas->surface();
+    cairo_surface_flush(surface);
+    const unsigned char *data = cairo_image_surface_get_data(surface);
+    Local<Object> buf = Nan::CopyBuffer(reinterpret_cast<const char*>(data), canvas->nBytes()).ToLocalChecked();
+    info.GetReturnValue().Set(buf);
+    return;
+  }
+
+  if (info.Length() > 1 && !(info[1]->IsUndefined() && info[2]->IsUndefined())) {
+    if (!info[1]->IsUndefined()) {
+        bool good = true;
+        if (info[1]->IsNumber()) {
+          compression_level = info[1]->Uint32Value();
+        } else if (info[1]->IsString()) {
+          if (info[1]->StrictEquals(Nan::New<String>("0").ToLocalChecked())) {
+            compression_level = 0;
+          } else {
+            uint32_t tmp = info[1]->Uint32Value();
+            if (tmp == 0) {
+              good = false;
+            } else {
+              compression_level = tmp;
+            }
+          }
+       } else {
+         good = false;
+       }
+
+       if (good) {
+         if (compression_level > 9) {
+           return Nan::ThrowRangeError("Allowed compression levels lie in the range [0, 9].");
+         }
+       } else {
+        return Nan::ThrowTypeError("Compression level must be a number.");
+       }
+    }
+
+    if (!info[2]->IsUndefined()) {
+      if (info[2]->IsUint32()) {
+        filter = info[2]->Uint32Value();
+      } else {
+        return Nan::ThrowTypeError("Invalid filter value.");
+      }
+    }
+  }
+
+  // Async
+  if (info[0]->IsFunction()) {
+    closure_t *closure = (closure_t *) malloc(sizeof(closure_t));
+    status = closure_init(closure, canvas, compression_level, filter);
+
+    // ensure closure is ok
+    if (status) {
+      closure_destroy(closure);
+      free(closure);
+      return Nan::ThrowError(Canvas::Error(status));
+    }
+
+    // TODO: only one callback fn in closure
+    canvas->Ref();
+    closure->pfn = new Nan::Callback(info[0].As<Function>());
+
+#if NODE_VERSION_AT_LEAST(0, 6, 0)
+    uv_work_t* req = new uv_work_t;
+    req->data = closure;
+    uv_queue_work(uv_default_loop(), req, ToBufferAsync, (uv_after_work_cb)ToBufferAsyncAfter);
+#else
+    eio_custom(EIO_ToBuffer, EIO_PRI_DEFAULT, EIO_AfterToBuffer, closure);
+    ev_ref(EV_DEFAULT_UC);
+#endif
+
+    return;
+  // Sync
+  } else {
+    closure_t closure;
+    status = closure_init(&closure, canvas, compression_level, filter);
+
+    // ensure closure is ok
+    if (status) {
+      closure_destroy(&closure);
+      return Nan::ThrowError(Canvas::Error(status));
+    }
+
+    Nan::TryCatch try_catch;
+    status = canvas_write_to_png_stream(canvas->surface(), toBuffer, &closure);
+
+    if (try_catch.HasCaught()) {
+      closure_destroy(&closure);
+      try_catch.ReThrow();
+      return;
+    } else if (status) {
+      closure_destroy(&closure);
+      return Nan::ThrowError(Canvas::Error(status));
+    } else {
+      Local<Object> buf = Nan::CopyBuffer((char *)closure.data, closure.len).ToLocalChecked();
+      closure_destroy(&closure);
+      info.GetReturnValue().Set(buf);
+      return;
+    }
+  }
+}
+
+/*
+ * Canvas::StreamPNG callback.
+ */
+
+static cairo_status_t
+streamPNG(void *c, const uint8_t *data, unsigned len) {
+  Nan::HandleScope scope;
+  closure_t *closure = (closure_t *) c;
+  Local<Object> buf = Nan::CopyBuffer((char *)data, len).ToLocalChecked();
+  Local<Value> argv[3] = {
+      Nan::Null()
+    , buf
+    , Nan::New<Number>(len) };
+  Nan::MakeCallback(Nan::GetCurrentContext()->Global(), (v8::Local<v8::Function>)closure->fn, 3, argv);
+  return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Stream PNG data synchronously.
+ */
+
+NAN_METHOD(Canvas::StreamPNGSync) {
+  uint32_t compression_level = 6;
+  uint32_t filter = PNG_ALL_FILTERS;
+  // TODO: async as well
+  if (!info[0]->IsFunction())
+    return Nan::ThrowTypeError("callback function required");
+
+  if (info.Length() > 1 && !(info[1]->IsUndefined() && info[2]->IsUndefined())) {
+    if (!info[1]->IsUndefined()) {
+        bool good = true;
+        if (info[1]->IsNumber()) {
+          compression_level = info[1]->Uint32Value();
+        } else if (info[1]->IsString()) {
+          if (info[1]->StrictEquals(Nan::New<String>("0").ToLocalChecked())) {
+            compression_level = 0;
+          } else {
+            uint32_t tmp = info[1]->Uint32Value();
+            if (tmp == 0) {
+              good = false;
+            } else {
+              compression_level = tmp;
+            }
+          }
+       } else {
+         good = false;
+       }
+
+       if (good) {
+         if (compression_level > 9) {
+           return Nan::ThrowRangeError("Allowed compression levels lie in the range [0, 9].");
+         }
+       } else {
+        return Nan::ThrowTypeError("Compression level must be a number.");
+       }
+    }
+
+    if (!info[2]->IsUndefined()) {
+      if (info[2]->IsUint32()) {
+        filter = info[2]->Uint32Value();
+      } else {
+        return Nan::ThrowTypeError("Invalid filter value.");
+      }
+    }
+  }
+
+
+  Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.This());
+  closure_t closure;
+  closure.fn = Local<Function>::Cast(info[0]);
+  closure.compression_level = compression_level;
+  closure.filter = filter;
+
+  Nan::TryCatch try_catch;
+
+  cairo_status_t status = canvas_write_to_png_stream(canvas->surface(), streamPNG, &closure);
+
+  if (try_catch.HasCaught()) {
+    try_catch.ReThrow();
+    return;
+  } else if (status) {
+    Local<Value> argv[1] = { Canvas::Error(status) };
+    Nan::MakeCallback(Nan::GetCurrentContext()->Global(), (v8::Local<v8::Function>)closure.fn, 1, argv);
+  } else {
+    Local<Value> argv[3] = {
+        Nan::Null()
+      , Nan::Null()
+      , Nan::New<Uint32>(0) };
+    Nan::MakeCallback(Nan::GetCurrentContext()->Global(), (v8::Local<v8::Function>)closure.fn, 1, argv);
+  }
+  return;
+}
+
+/*
+ * Canvas::StreamPDF FreeCallback
+ */
+
+void stream_pdf_free(char *, void *) {}
+
+/*
+ * Canvas::StreamPDF callback.
+ */
+
+static cairo_status_t
+streamPDF(void *c, const uint8_t *data, unsigned len) {
+  Nan::HandleScope scope;
+  closure_t *closure = static_cast<closure_t *>(c);
+  Local<Object> buf = Nan::NewBuffer(const_cast<char *>(reinterpret_cast<const char *>(data)), len, stream_pdf_free, 0).ToLocalChecked();
+  Local<Value> argv[3] = {
+      Nan::Null()
+    , buf
+    , Nan::New<Number>(len) };
+  Nan::MakeCallback(Nan::GetCurrentContext()->Global(), closure->fn, 3, argv);
+  return CAIRO_STATUS_SUCCESS;
+}
+
+
+cairo_status_t canvas_write_to_pdf_stream(cairo_surface_t *surface, cairo_write_func_t write_func, void *closure) {
+  closure_t *pdf_closure = static_cast<closure_t *>(closure);
+  size_t whole_chunks = pdf_closure->len / PAGE_SIZE;
+  size_t remainder = pdf_closure->len - whole_chunks * PAGE_SIZE;
+
+  for (size_t i = 0; i < whole_chunks; ++i) {
+    write_func(pdf_closure, &pdf_closure->data[i * PAGE_SIZE], PAGE_SIZE);
+  }
+
+  if (remainder) {
+    write_func(pdf_closure, &pdf_closure->data[whole_chunks * PAGE_SIZE], remainder);
+  }
+
+  return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Stream PDF data synchronously.
+ */
+
+NAN_METHOD(Canvas::StreamPDFSync) {
+  if (!info[0]->IsFunction())
+    return Nan::ThrowTypeError("callback function required");
+
+  Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.Holder());
+
+  if (!canvas->isPDF())
+    return Nan::ThrowTypeError("wrong canvas type");
+
+  cairo_surface_finish(canvas->surface());
+
+  closure_t closure;
+  closure.data = static_cast<closure_t *>(canvas->closure())->data;
+  closure.len = static_cast<closure_t *>(canvas->closure())->len;
+  closure.fn = info[0].As<Function>();
+
+  Nan::TryCatch try_catch;
+
+  cairo_status_t status = canvas_write_to_pdf_stream(canvas->surface(), streamPDF, &closure);
+
+  if (try_catch.HasCaught()) {
+    try_catch.ReThrow();
+  } else if (status) {
+    Local<Value> error = Canvas::Error(status);
+    Nan::Call(closure.fn, Nan::GetCurrentContext()->Global(), 1, &error);
+  } else {
+    Local<Value> argv[3] = {
+        Nan::Null()
+      , Nan::Null()
+      , Nan::New<Uint32>(0) };
+    Nan::Call(closure.fn, Nan::GetCurrentContext()->Global(), 3, argv);
+  }
+}
+
+/*
+ * Stream JPEG data synchronously.
+ */
+
+#ifdef HAVE_JPEG
+
+NAN_METHOD(Canvas::StreamJPEGSync) {
+  // TODO: async as well
+  if (!info[0]->IsNumber())
+    return Nan::ThrowTypeError("buffer size required");
+  if (!info[1]->IsNumber())
+    return Nan::ThrowTypeError("quality setting required");
+  if (!info[2]->IsBoolean())
+    return Nan::ThrowTypeError("progressive setting required");
+  if (!info[3]->IsFunction())
+    return Nan::ThrowTypeError("callback function required");
+
+  Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(info.This());
+  closure_t closure;
+  closure.fn = Local<Function>::Cast(info[3]);
+
+  Nan::TryCatch try_catch;
+  write_to_jpeg_stream(canvas->surface(), info[0]->NumberValue(), info[1]->NumberValue(), info[2]->BooleanValue(), &closure);
+
+  if (try_catch.HasCaught()) {
+    try_catch.ReThrow();
+  }
+  return;
+}
+
+#endif
+
+/*
+ * Initialize cairo surface.
+ */
+
+Canvas::Canvas(int w, int h, canvas_type_t t): Nan::ObjectWrap() {
+  type = t;
+  width = w;
+  height = h;
+  _surface = NULL;
+  _closure = NULL;
+
+  if (CANVAS_TYPE_PDF == t) {
+    _closure = malloc(sizeof(closure_t));
+    assert(_closure);
+    cairo_status_t status = closure_init((closure_t *) _closure, this, 0, PNG_NO_FILTERS);
+    assert(status == CAIRO_STATUS_SUCCESS);
+    _surface = cairo_pdf_surface_create_for_stream(toBuffer, _closure, w, h);
+  } else if (CANVAS_TYPE_SVG == t) {
+    _closure = malloc(sizeof(closure_t));
+    assert(_closure);
+    cairo_status_t status = closure_init((closure_t *) _closure, this, 0, PNG_NO_FILTERS);
+    assert(status == CAIRO_STATUS_SUCCESS);
+    _surface = cairo_svg_surface_create_for_stream(toBuffer, _closure, w, h);
+  } else {
+    _surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h);
+    assert(_surface);
+    Nan::AdjustExternalMemory(nBytes());
+  }
+}
+
+/*
+ * Destroy cairo surface.
+ */
+
+Canvas::~Canvas() {
+  switch (type) {
+    case CANVAS_TYPE_PDF:
+    case CANVAS_TYPE_SVG:
+      cairo_surface_finish(_surface);
+      closure_destroy((closure_t *) _closure);
+      free(_closure);
+      cairo_surface_destroy(_surface);
+      break;
+    case CANVAS_TYPE_IMAGE:
+      int oldNBytes = nBytes();
+      cairo_surface_destroy(_surface);
+      Nan::AdjustExternalMemory(-oldNBytes);
+      break;
+  }
+}
+
+/*
+ * Re-alloc the surface, destroying the previous.
+ */
+
+void
+Canvas::resurface(Local<Object> canvas) {
+  Nan::HandleScope scope;
+  Local<Value> context;
+  switch (type) {
+    case CANVAS_TYPE_PDF:
+      cairo_pdf_surface_set_size(_surface, width, height);
+      break;
+    case CANVAS_TYPE_SVG:
+      // Re-surface
+      cairo_surface_finish(_surface);
+      closure_destroy((closure_t *) _closure);
+      cairo_surface_destroy(_surface);
+      closure_init((closure_t *) _closure, this, 0, PNG_NO_FILTERS);
+      _surface = cairo_svg_surface_create_for_stream(toBuffer, _closure, width, height);
+
+      // Reset context
+      context = canvas->Get(Nan::New<String>("context").ToLocalChecked());
+      if (!context->IsUndefined()) {
+        Context2d *context2d = Nan::ObjectWrap::Unwrap<Context2d>(context->ToObject());
+        cairo_t *prev = context2d->context();
+        context2d->setContext(cairo_create(surface()));
+        cairo_destroy(prev);
+      }
+      break;
+    case CANVAS_TYPE_IMAGE:
+      // Re-surface
+      size_t oldNBytes = nBytes();
+      cairo_surface_destroy(_surface);
+      _surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
+      Nan::AdjustExternalMemory(nBytes() - oldNBytes);
+
+      // Reset context
+      context = canvas->Get(Nan::New<String>("context").ToLocalChecked());
+      if (!context->IsUndefined()) {
+        Context2d *context2d = Nan::ObjectWrap::Unwrap<Context2d>(context->ToObject());
+        cairo_t *prev = context2d->context();
+        context2d->setContext(cairo_create(surface()));
+        cairo_destroy(prev);
+      }
+      break;
+  }
+}
+
+/*
+ * Construct an Error from the given cairo status.
+ */
+
+Local<Value>
+Canvas::Error(cairo_status_t status) {
+  return Exception::Error(Nan::New<String>(cairo_status_to_string(status)).ToLocalChecked());
+}

hm_sunwell/node_modules/canvas/src/Canvas.h

@@ -0,0 +1,99 @@
+
+//
+// Canvas.h
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __NODE_CANVAS_H__
+#define __NODE_CANVAS_H__
+
+#include <v8.h>
+#include <node.h>
+#include <node_object_wrap.h>
+#include <node_version.h>
+
+#if HAVE_PANGO
+#include <pango/pangocairo.h>
+#else
+#include <cairo.h>
+#endif
+
+#include <nan.h>
+
+using namespace v8;
+using namespace node;
+
+/*
+ * Maxmimum states per context.
+ * TODO: remove/resize
+ */
+
+#ifndef CANVAS_MAX_STATES
+#define CANVAS_MAX_STATES 64
+#endif
+
+/*
+ * Canvas types.
+ */
+
+typedef enum {
+  CANVAS_TYPE_IMAGE,
+  CANVAS_TYPE_PDF,
+  CANVAS_TYPE_SVG
+} canvas_type_t;
+
+/*
+ * Canvas.
+ */
+
+class Canvas: public Nan::ObjectWrap {
+  public:
+    int width;
+    int height;
+    canvas_type_t type;
+    static Nan::Persistent<FunctionTemplate> constructor;
+    static void Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target);
+    static NAN_METHOD(New);
+    static NAN_METHOD(ToBuffer);
+    static NAN_GETTER(GetType);
+    static NAN_GETTER(GetStride);
+    static NAN_GETTER(GetWidth);
+    static NAN_GETTER(GetHeight);
+    static NAN_SETTER(SetWidth);
+    static NAN_SETTER(SetHeight);
+    static NAN_METHOD(StreamPNGSync);
+    static NAN_METHOD(StreamPDFSync);
+    static NAN_METHOD(StreamJPEGSync);
+    static Local<Value> Error(cairo_status_t status);
+#if NODE_VERSION_AT_LEAST(0, 6, 0)
+    static void ToBufferAsync(uv_work_t *req);
+    static void ToBufferAsyncAfter(uv_work_t *req);
+#else
+    static
+#if NODE_VERSION_AT_LEAST(0, 5, 4)
+      void
+#else
+      int
+#endif
+      EIO_ToBuffer(eio_req *req);
+    static int EIO_AfterToBuffer(eio_req *req);
+#endif
+
+    inline bool isPDF(){ return CANVAS_TYPE_PDF == type; }
+    inline bool isSVG(){ return CANVAS_TYPE_SVG == type; }
+    inline cairo_surface_t *surface(){ return _surface; }
+    inline void *closure(){ return _closure; }
+    inline uint8_t *data(){ return cairo_image_surface_get_data(_surface); }
+    inline int stride(){ return cairo_image_surface_get_stride(_surface); }
+    inline int nBytes(){ return height * stride(); }
+    Canvas(int width, int height, canvas_type_t type);
+    void resurface(Local<Object> canvas);
+
+  private:
+    ~Canvas();
+    cairo_surface_t *_surface;
+    void *_closure;
+};
+
+#endif

hm_sunwell/node_modules/canvas/src/CanvasGradient.cc

@@ -0,0 +1,122 @@
+
+//
+// Gradient.cc
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#include "color.h"
+#include "Canvas.h"
+#include "CanvasGradient.h"
+
+Nan::Persistent<FunctionTemplate> Gradient::constructor;
+
+/*
+ * Initialize CanvasGradient.
+ */
+
+void
+Gradient::Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target) {
+  Nan::HandleScope scope;
+
+  // Constructor
+  Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(Gradient::New);
+  constructor.Reset(ctor);
+  ctor->InstanceTemplate()->SetInternalFieldCount(1);
+  ctor->SetClassName(Nan::New("CanvasGradient").ToLocalChecked());
+
+  // Prototype
+  Nan::SetPrototypeMethod(ctor, "addColorStop", AddColorStop);
+  Nan::Set(target, Nan::New("CanvasGradient").ToLocalChecked(), ctor->GetFunction());
+}
+
+/*
+ * Initialize a new CanvasGradient.
+ */
+
+NAN_METHOD(Gradient::New) {
+  if (!info.IsConstructCall()) {
+    return Nan::ThrowTypeError("Class constructors cannot be invoked without 'new'");
+  }
+
+  // Linear
+  if (4 == info.Length()) {
+    Gradient *grad = new Gradient(
+        info[0]->NumberValue()
+      , info[1]->NumberValue()
+      , info[2]->NumberValue()
+      , info[3]->NumberValue());
+    grad->Wrap(info.This());
+    info.GetReturnValue().Set(info.This());
+    return;
+  }
+
+  // Radial
+  if (6 == info.Length()) {
+    Gradient *grad = new Gradient(
+        info[0]->NumberValue()
+      , info[1]->NumberValue()
+      , info[2]->NumberValue()
+      , info[3]->NumberValue()
+      , info[4]->NumberValue()
+      , info[5]->NumberValue());
+    grad->Wrap(info.This());
+    info.GetReturnValue().Set(info.This());
+    return;
+  }
+
+  return Nan::ThrowTypeError("invalid arguments");
+}
+
+/*
+ * Add color stop.
+ */
+
+NAN_METHOD(Gradient::AddColorStop) {
+  if (!info[0]->IsNumber())
+    return Nan::ThrowTypeError("offset required");
+  if (!info[1]->IsString())
+    return Nan::ThrowTypeError("color string required");
+
+  Gradient *grad = Nan::ObjectWrap::Unwrap<Gradient>(info.This());
+  short ok;
+  String::Utf8Value str(info[1]);
+  uint32_t rgba = rgba_from_string(*str, &ok);
+
+  if (ok) {
+    rgba_t color = rgba_create(rgba);
+    cairo_pattern_add_color_stop_rgba(
+        grad->pattern()
+      , info[0]->NumberValue()
+      , color.r
+      , color.g
+      , color.b
+      , color.a);
+  } else {
+    return Nan::ThrowTypeError("parse color failed");
+  }
+}
+
+/*
+ * Initialize linear gradient.
+ */
+
+Gradient::Gradient(double x0, double y0, double x1, double y1) {
+  _pattern = cairo_pattern_create_linear(x0, y0, x1, y1);
+}
+
+/*
+ * Initialize radial gradient.
+ */
+
+Gradient::Gradient(double x0, double y0, double r0, double x1, double y1, double r1) {
+  _pattern = cairo_pattern_create_radial(x0, y0, r0, x1, y1, r1);
+}
+
+/*
+ * Destroy the pattern.
+ */
+
+Gradient::~Gradient() {
+  cairo_pattern_destroy(_pattern);
+}

hm_sunwell/node_modules/canvas/src/CanvasGradient.h

@@ -0,0 +1,28 @@
+
+//
+// CanvasGradient.h
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __NODE_GRADIENT_H__
+#define __NODE_GRADIENT_H__
+
+#include "Canvas.h"
+
+class Gradient: public Nan::ObjectWrap {
+  public:
+    static Nan::Persistent<FunctionTemplate> constructor;
+    static void Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target);
+    static NAN_METHOD(New);
+    static NAN_METHOD(AddColorStop);
+    Gradient(double x0, double y0, double x1, double y1);
+    Gradient(double x0, double y0, double r0, double x1, double y1, double r1);
+    inline cairo_pattern_t *pattern(){ return _pattern; }
+
+  private:
+    ~Gradient();
+    cairo_pattern_t *_pattern;
+};
+
+#endif

hm_sunwell/node_modules/canvas/src/CanvasPattern.cc

@@ -0,0 +1,86 @@
+
+//
+// Pattern.cc
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#include "Canvas.h"
+#include "Image.h"
+#include "CanvasPattern.h"
+
+Nan::Persistent<FunctionTemplate> Pattern::constructor;
+
+/*
+ * Initialize CanvasPattern.
+ */
+
+void
+Pattern::Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target) {
+  Nan::HandleScope scope;
+
+  // Constructor
+  Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(Pattern::New);
+  constructor.Reset(ctor);
+  ctor->InstanceTemplate()->SetInternalFieldCount(1);
+  ctor->SetClassName(Nan::New("CanvasPattern").ToLocalChecked());
+
+  ctor->InstanceTemplate()->SetInternalFieldCount(1);
+  ctor->SetClassName(Nan::New("CanvasPattern").ToLocalChecked());
+
+  // Prototype
+  Nan::Set(target, Nan::New("CanvasPattern").ToLocalChecked(), ctor->GetFunction());
+}
+
+/*
+ * Initialize a new CanvasPattern.
+ */
+
+NAN_METHOD(Pattern::New) {
+  if (!info.IsConstructCall()) {
+    return Nan::ThrowTypeError("Class constructors cannot be invoked without 'new'");
+  }
+
+  cairo_surface_t *surface;
+
+  Local<Object> obj = info[0]->ToObject();
+
+  // Image
+  if (Nan::New(Image::constructor)->HasInstance(obj)) {
+    Image *img = Nan::ObjectWrap::Unwrap<Image>(obj);
+    if (!img->isComplete()) {
+      return Nan::ThrowError("Image given has not completed loading");
+    }
+    surface = img->surface();
+
+  // Canvas
+  } else if (Nan::New(Canvas::constructor)->HasInstance(obj)) {
+    Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(obj);
+    surface = canvas->surface();
+
+  // Invalid
+  } else {
+    return Nan::ThrowTypeError("Image or Canvas expected");
+  }
+
+  Pattern *pattern = new Pattern(surface);
+  pattern->Wrap(info.This());
+  info.GetReturnValue().Set(info.This());
+}
+
+
+/*
+ * Initialize linear gradient.
+ */
+
+Pattern::Pattern(cairo_surface_t *surface) {
+  _pattern = cairo_pattern_create_for_surface(surface);
+}
+
+/*
+ * Destroy the pattern.
+ */
+
+Pattern::~Pattern() {
+  cairo_pattern_destroy(_pattern);
+}

hm_sunwell/node_modules/canvas/src/CanvasPattern.h

@@ -0,0 +1,27 @@
+
+//
+// CanvasPattern.h
+//
+// Copyright (c) 2011 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __NODE_PATTERN_H__
+#define __NODE_PATTERN_H__
+
+#include "Canvas.h"
+
+class Pattern: public Nan::ObjectWrap {
+  public:
+    static Nan::Persistent<FunctionTemplate> constructor;
+    static void Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target);
+    static NAN_METHOD(New);
+    Pattern(cairo_surface_t *surface);
+    inline cairo_pattern_t *pattern(){ return _pattern; }
+
+  private:
+    ~Pattern();
+    // TODO REPEAT/REPEAT_X/REPEAT_Y
+    cairo_pattern_t *_pattern;
+};
+
+#endif

hm_sunwell/node_modules/canvas/src/CanvasRenderingContext2d.h

@@ -0,0 +1,185 @@
+
+//
+// CanvasRenderingContext2d.h
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __NODE_CONTEXT2D_H__
+#define __NODE_CONTEXT2D_H__
+
+#include "color.h"
+#include "Canvas.h"
+#include "CanvasGradient.h"
+
+#ifdef HAVE_FREETYPE
+#include <ft2build.h>
+#include <cairo-ft.h>
+#include FT_FREETYPE_H
+#endif
+
+#include <vector>
+using namespace std;
+
+typedef enum {
+  TEXT_DRAW_PATHS,
+  TEXT_DRAW_GLYPHS
+} canvas_draw_mode_t;
+
+/*
+ * State struct.
+ *
+ * Used in conjunction with Save() / Restore() since
+ * cairo's gstate maintains only a single source pattern at a time.
+ */
+
+typedef struct {
+  rgba_t fill;
+  rgba_t stroke;
+  cairo_filter_t patternQuality;
+  cairo_pattern_t *fillPattern;
+  cairo_pattern_t *strokePattern;
+  cairo_pattern_t *fillGradient;
+  cairo_pattern_t *strokeGradient;
+  float globalAlpha;
+  short textAlignment;
+  short textBaseline;
+  rgba_t shadow;
+  int shadowBlur;
+  double shadowOffsetX;
+  double shadowOffsetY;
+  canvas_draw_mode_t textDrawingMode;
+
+#if HAVE_PANGO
+  PangoWeight fontWeight;
+  PangoStyle fontStyle;
+  double fontSize;
+  char *fontFamily;
+#endif
+
+} canvas_state_t;
+
+#if HAVE_PANGO
+void state_assign_fontFamily(canvas_state_t *state, const char *str);
+#endif
+
+class Context2d: public Nan::ObjectWrap {
+  public:
+    short stateno;
+    canvas_state_t *states[CANVAS_MAX_STATES];
+    canvas_state_t *state;
+    Context2d(Canvas *canvas);
+    static Nan::Persistent<FunctionTemplate> constructor;
+    static void Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target);
+    static NAN_METHOD(New);
+    static NAN_METHOD(DrawImage);
+    static NAN_METHOD(PutImageData);
+    static NAN_METHOD(Save);
+    static NAN_METHOD(Restore);
+    static NAN_METHOD(Rotate);
+    static NAN_METHOD(Translate);
+    static NAN_METHOD(Scale);
+    static NAN_METHOD(Transform);
+    static NAN_METHOD(ResetTransform);
+    static NAN_METHOD(IsPointInPath);
+    static NAN_METHOD(BeginPath);
+    static NAN_METHOD(ClosePath);
+    static NAN_METHOD(AddPage);
+    static NAN_METHOD(Clip);
+    static NAN_METHOD(Fill);
+    static NAN_METHOD(Stroke);
+    static NAN_METHOD(FillText);
+    static NAN_METHOD(StrokeText);
+    static NAN_METHOD(SetFont);
+#ifdef HAVE_FREETYPE
+    static NAN_METHOD(SetFontFace);
+#endif
+    static NAN_METHOD(SetFillColor);
+    static NAN_METHOD(SetStrokeColor);
+    static NAN_METHOD(SetFillPattern);
+    static NAN_METHOD(SetStrokePattern);
+    static NAN_METHOD(SetTextBaseline);
+    static NAN_METHOD(SetTextAlignment);
+    static NAN_METHOD(SetLineDash);
+    static NAN_METHOD(GetLineDash);
+    static NAN_METHOD(MeasureText);
+    static NAN_METHOD(BezierCurveTo);
+    static NAN_METHOD(QuadraticCurveTo);
+    static NAN_METHOD(LineTo);
+    static NAN_METHOD(MoveTo);
+    static NAN_METHOD(FillRect);
+    static NAN_METHOD(StrokeRect);
+    static NAN_METHOD(ClearRect);
+    static NAN_METHOD(Rect);
+    static NAN_METHOD(Arc);
+    static NAN_METHOD(ArcTo);
+    static NAN_METHOD(GetImageData);
+    static NAN_GETTER(GetPatternQuality);
+    static NAN_GETTER(GetGlobalCompositeOperation);
+    static NAN_GETTER(GetGlobalAlpha);
+    static NAN_GETTER(GetShadowColor);
+    static NAN_GETTER(GetFillColor);
+    static NAN_GETTER(GetStrokeColor);
+    static NAN_GETTER(GetMiterLimit);
+    static NAN_GETTER(GetLineCap);
+    static NAN_GETTER(GetLineJoin);
+    static NAN_GETTER(GetLineWidth);
+    static NAN_GETTER(GetLineDashOffset);
+    static NAN_GETTER(GetShadowOffsetX);
+    static NAN_GETTER(GetShadowOffsetY);
+    static NAN_GETTER(GetShadowBlur);
+    static NAN_GETTER(GetAntiAlias);
+    static NAN_GETTER(GetTextDrawingMode);
+    static NAN_GETTER(GetFilter);
+    static NAN_SETTER(SetPatternQuality);
+    static NAN_SETTER(SetGlobalCompositeOperation);
+    static NAN_SETTER(SetGlobalAlpha);
+    static NAN_SETTER(SetShadowColor);
+    static NAN_SETTER(SetMiterLimit);
+    static NAN_SETTER(SetLineCap);
+    static NAN_SETTER(SetLineJoin);
+    static NAN_SETTER(SetLineWidth);
+    static NAN_SETTER(SetLineDashOffset);
+    static NAN_SETTER(SetShadowOffsetX);
+    static NAN_SETTER(SetShadowOffsetY);
+    static NAN_SETTER(SetShadowBlur);
+    static NAN_SETTER(SetAntiAlias);
+    static NAN_SETTER(SetTextDrawingMode);
+    static NAN_SETTER(SetFilter);
+    inline void setContext(cairo_t *ctx) { _context = ctx; }
+    inline cairo_t *context(){ return _context; }
+    inline Canvas *canvas(){ return _canvas; }
+    inline bool hasShadow();
+    void inline setSourceRGBA(rgba_t color);
+    void inline setSourceRGBA(cairo_t *ctx, rgba_t color);
+    void setTextPath(const char *str, double x, double y);
+    void blur(cairo_surface_t *surface, int radius);
+    void shadow(void (fn)(cairo_t *cr));
+    void shadowStart();
+    void shadowApply();
+    void savePath();
+    void restorePath();
+    void saveState();
+    void restoreState();
+    void inline setFillRule(v8::Local<v8::Value> value);
+    void fill(bool preserve = false);
+    void stroke(bool preserve = false);
+    void save();
+    void restore();
+
+#if HAVE_PANGO
+    void setFontFromState();
+    inline PangoLayout *layout(){ return _layout; }
+#endif
+
+  private:
+    ~Context2d();
+    Canvas *_canvas;
+    cairo_t *_context;
+    cairo_path_t *_path;
+#if HAVE_PANGO
+    PangoLayout *_layout;
+#endif
+};
+
+#endif

hm_sunwell/node_modules/canvas/src/FontFace.cc

@@ -0,0 +1,113 @@
+//
+// FontFace.cc
+//
+// Copyright (c) 2012 Julian Viereck <julian.viereck@gmail.com>
+//
+
+#include "FontFace.h"
+
+#include <fontconfig/fontconfig.h>
+
+Nan::Persistent<FunctionTemplate> FontFace::constructor;
+
+/*
+ * Destroy ft_face.
+ */
+
+FontFace::~FontFace() {
+  // Decrement extra reference count added in ::New(...).
+  // Once there is no reference left to crFace, cairo will release the
+  // free type font face as well.
+  cairo_font_face_destroy(_crFace);
+}
+
+/*
+ * Initialize FontFace.
+ */
+
+void
+FontFace::Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target) {
+  Nan::HandleScope scope;
+
+  // Constructor
+  Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(FontFace::New);
+  constructor.Reset(ctor);
+  ctor->InstanceTemplate()->SetInternalFieldCount(1);
+  ctor->SetClassName(Nan::New("FontFace").ToLocalChecked());
+
+  // Prototype
+  Nan::Set(target, Nan::New("FontFace").ToLocalChecked(), ctor->GetFunction());
+}
+
+/*
+ * Initialize a new FontFace object.
+ */
+
+FT_Library library; /* handle to library */
+
+bool FontFace::_initLibrary = true;
+static cairo_user_data_key_t key;
+
+/*
+ * Initialize a new FontFace.
+ */
+
+NAN_METHOD(FontFace::New) {
+  if (!info.IsConstructCall()) {
+    return Nan::ThrowTypeError("Class constructors cannot be invoked without 'new'");
+  }
+
+  if (!info[0]->IsString()
+    || !info[1]->IsNumber()) {
+    return Nan::ThrowError("Wrong argument types passed to FontFace constructor");
+  }
+
+  String::Utf8Value filePath(info[0]);
+  int faceIdx = int(info[1]->NumberValue());
+
+  FT_Face ftFace;
+  FT_Error ftError;
+  cairo_font_face_t *crFace;
+
+  if (_initLibrary) {
+    _initLibrary = false;
+    ftError = FT_Init_FreeType(&library);
+    if (ftError) {
+      return Nan::ThrowError("Could not load library");
+    }
+  }
+
+  // Create new freetype font face.
+  ftError = FT_New_Face(library, *filePath, faceIdx, &ftFace);
+  if (ftError) {
+    return Nan::ThrowError("Could not load font file");
+  }
+
+  #if HAVE_PANGO
+    // Load the font file in fontconfig
+    FcBool ok = FcConfigAppFontAddFile(FcConfigGetCurrent(), (FcChar8 *)(*filePath));
+    if (!ok) {
+      return Nan::ThrowError("Could not load font in FontConfig");
+    }
+  #endif
+
+  // Create new cairo font face.
+  crFace = cairo_ft_font_face_create_for_ft_face(ftFace, 0);
+
+  // If the cairo font face is released, release the FreeType font face as well.
+  int status = cairo_font_face_set_user_data (crFace, &key,
+                                 ftFace, (cairo_destroy_func_t) FT_Done_Face);
+  if (status) {
+    cairo_font_face_destroy (crFace);
+    FT_Done_Face (ftFace);
+    return Nan::ThrowError("Failed to setup cairo font face user data");
+  }
+
+  // Explicit reference count the cairo font face. Otherwise the font face might
+  // get released by cairo although the JS font face object is still alive.
+  cairo_font_face_reference(crFace);
+
+  FontFace *face = new FontFace(crFace);
+  face->Wrap(info.This());
+  info.GetReturnValue().Set(info.This());
+}

hm_sunwell/node_modules/canvas/src/FontFace.h

@@ -0,0 +1,32 @@
+//
+// FontFace.h
+//
+// Copyright (c) 2012 Julian Viereck <julian.viereck@gmail.com>
+//
+
+#ifndef __NODE_TRUE_TYPE_FONT_FACE_H__
+#define __NODE_TRUE_TYPE_FONT_FACE_H__
+
+#include "Canvas.h"
+
+#include <ft2build.h>
+#include <cairo-ft.h>
+#include FT_FREETYPE_H
+
+class FontFace: public Nan::ObjectWrap {
+  public:
+    static Nan::Persistent<FunctionTemplate> constructor;
+    static void Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target);
+    static NAN_METHOD(New);
+    FontFace(cairo_font_face_t *crFace)
+      :_crFace(crFace) {}
+
+    inline cairo_font_face_t *cairoFace(){ return _crFace; }
+  private:
+    ~FontFace();
+    cairo_font_face_t *_crFace;
+    static bool _initLibrary;
+};
+
+#endif
+

hm_sunwell/node_modules/canvas/src/Image.cc

@@ -0,0 +1,974 @@
+//
+// Image.cc
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#include "Canvas.h"
+#include "Image.h"
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <node_buffer.h>
+
+#ifdef HAVE_GIF
+typedef struct {
+  uint8_t *buf;
+  unsigned len;
+  unsigned pos;
+} gif_data_t;
+#endif
+
+/*
+ * Read closure used by loadFromBuffer.
+ */
+
+typedef struct {
+  unsigned len;
+  uint8_t *buf;
+} read_closure_t;
+
+Nan::Persistent<FunctionTemplate> Image::constructor;
+
+/*
+ * Initialize Image.
+ */
+
+void
+Image::Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target) {
+  Nan::HandleScope scope;
+
+  Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(Image::New);
+  constructor.Reset(ctor);
+  ctor->InstanceTemplate()->SetInternalFieldCount(1);
+  ctor->SetClassName(Nan::New("Image").ToLocalChecked());
+
+  // Prototype
+  Local<ObjectTemplate> proto = ctor->PrototypeTemplate();
+  Nan::SetAccessor(proto, Nan::New("source").ToLocalChecked(), GetSource, SetSource);
+  Nan::SetAccessor(proto, Nan::New("complete").ToLocalChecked(), GetComplete);
+  Nan::SetAccessor(proto, Nan::New("width").ToLocalChecked(), GetWidth);
+  Nan::SetAccessor(proto, Nan::New("height").ToLocalChecked(), GetHeight);
+  Nan::SetAccessor(proto, Nan::New("onload").ToLocalChecked(), GetOnload, SetOnload);
+  Nan::SetAccessor(proto, Nan::New("onerror").ToLocalChecked(), GetOnerror, SetOnerror);
+#if CAIRO_VERSION_MINOR >= 10
+  Nan::SetAccessor(proto, Nan::New("dataMode").ToLocalChecked(), GetDataMode, SetDataMode);
+  ctor->Set(Nan::New("MODE_IMAGE").ToLocalChecked(), Nan::New<Number>(DATA_IMAGE));
+  ctor->Set(Nan::New("MODE_MIME").ToLocalChecked(), Nan::New<Number>(DATA_MIME));
+#endif
+  Nan::Set(target, Nan::New("Image").ToLocalChecked(), ctor->GetFunction());
+}
+
+/*
+ * Initialize a new Image.
+ */
+
+NAN_METHOD(Image::New) {
+  if (!info.IsConstructCall()) {
+    return Nan::ThrowTypeError("Class constructors cannot be invoked without 'new'");
+  }
+
+  Image *img = new Image;
+  img->data_mode = DATA_IMAGE;
+  img->Wrap(info.This());
+  info.GetReturnValue().Set(info.This());
+}
+
+/*
+ * Get complete boolean.
+ */
+
+NAN_GETTER(Image::GetComplete) {
+  Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+  info.GetReturnValue().Set(Nan::New<Boolean>(Image::COMPLETE == img->state));
+}
+
+#if CAIRO_VERSION_MINOR >= 10
+
+/*
+ * Get dataMode.
+ */
+
+NAN_GETTER(Image::GetDataMode) {
+  Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+  info.GetReturnValue().Set(Nan::New<Number>(img->data_mode));
+}
+
+/*
+ * Set dataMode.
+ */
+
+NAN_SETTER(Image::SetDataMode) {
+  if (value->IsNumber()) {
+    Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+    int mode = value->Uint32Value();
+    img->data_mode = (data_mode_t) mode;
+  }
+}
+
+#endif
+
+/*
+ * Get width.
+ */
+
+NAN_GETTER(Image::GetWidth) {
+  Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+  info.GetReturnValue().Set(Nan::New<Number>(img->width));
+}
+/*
+ * Get height.
+ */
+
+NAN_GETTER(Image::GetHeight) {
+  Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+  info.GetReturnValue().Set(Nan::New<Number>(img->height));
+}
+
+/*
+ * Get src path.
+ */
+
+NAN_GETTER(Image::GetSource) {
+  Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+  info.GetReturnValue().Set(Nan::New<String>(img->filename ? img->filename : "").ToLocalChecked());
+}
+
+/*
+ * Clean up assets and variables.
+ */
+
+void
+Image::clearData() {
+  if (_surface) {
+    cairo_surface_destroy(_surface);
+    Nan::AdjustExternalMemory(-_data_len);
+    _data_len = 0;
+    _surface = NULL;
+  }
+
+  free(_data);
+  _data = NULL;
+
+  free(filename);
+  filename = NULL;
+
+  width = height = 0;
+  state = DEFAULT;
+}
+
+/*
+ * Set src path.
+ */
+
+NAN_SETTER(Image::SetSource) {
+  Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+  cairo_status_t status = CAIRO_STATUS_READ_ERROR;
+
+  img->clearData();
+
+  // url string
+  if (value->IsString()) {
+    String::Utf8Value src(value);
+    if (img->filename) free(img->filename);
+    img->filename = strdup(*src);
+    status = img->load();
+  // Buffer
+  } else if (Buffer::HasInstance(value)) {
+    uint8_t *buf = (uint8_t *) Buffer::Data(value->ToObject());
+    unsigned len = Buffer::Length(value->ToObject());
+    status = img->loadFromBuffer(buf, len);
+  }
+
+  // check status
+  if (status) {
+    img->error(Canvas::Error(status));
+  } else {
+    img->loaded();
+  }
+}
+
+/*
+ * Load image data from `buf` by sniffing
+ * the bytes to determine format.
+ */
+
+cairo_status_t
+Image::loadFromBuffer(uint8_t *buf, unsigned len) {
+  uint8_t data[4] = {0};
+  memcpy(data, buf, (len < 4 ? len : 4) * sizeof(uint8_t));
+
+  if (isPNG(data)) return loadPNGFromBuffer(buf);
+#ifdef HAVE_GIF
+  if (isGIF(data)) return loadGIFFromBuffer(buf, len);
+#endif
+#ifdef HAVE_JPEG
+#if CAIRO_VERSION_MINOR < 10
+  if (isJPEG(data)) return loadJPEGFromBuffer(buf, len);
+#else
+  if (isJPEG(data)) {
+    if (DATA_IMAGE == data_mode) return loadJPEGFromBuffer(buf, len);
+    if (DATA_MIME == data_mode) return decodeJPEGBufferIntoMimeSurface(buf, len);
+    if ((DATA_IMAGE | DATA_MIME) == data_mode) {
+      cairo_status_t status;
+      status = loadJPEGFromBuffer(buf, len);
+      if (status) return status;
+      return assignDataAsMime(buf, len, CAIRO_MIME_TYPE_JPEG);
+    }
+  }
+#endif
+#endif
+  return CAIRO_STATUS_READ_ERROR;
+}
+
+/*
+ * Load PNG data from `buf`.
+ */
+
+cairo_status_t
+Image::loadPNGFromBuffer(uint8_t *buf) {
+  read_closure_t closure;
+  closure.len = 0;
+  closure.buf = buf;
+  _surface = cairo_image_surface_create_from_png_stream(readPNG, &closure);
+  cairo_status_t status = cairo_surface_status(_surface);
+  if (status) return status;
+  return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Read PNG data.
+ */
+
+cairo_status_t
+Image::readPNG(void *c, uint8_t *data, unsigned int len) {
+  read_closure_t *closure = (read_closure_t *) c;
+  memcpy(data, closure->buf + closure->len, len);
+  closure->len += len;
+  return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Get onload callback.
+ */
+
+NAN_GETTER(Image::GetOnload) {
+  Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+  if (img->onload) {
+    info.GetReturnValue().Set(img->onload->GetFunction());
+  } else {
+    info.GetReturnValue().SetNull();
+  }
+}
+
+/*
+ * Set onload callback.
+ */
+
+NAN_SETTER(Image::SetOnload) {
+  if (value->IsFunction()) {
+    Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+    img->onload = new Nan::Callback(value.As<Function>());
+  } else if (value->IsNull()) {
+    Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+    if (img->onload) {
+      delete img->onload;
+    }
+    img->onload = NULL;
+  }
+}
+
+/*
+ * Get onerror callback.
+ */
+
+NAN_GETTER(Image::GetOnerror) {
+  Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+  if (img->onerror) {
+    info.GetReturnValue().Set(img->onerror->GetFunction());
+  } else {
+    info.GetReturnValue().SetNull();
+  }
+}
+
+/*
+ * Set onerror callback.
+ */
+
+NAN_SETTER(Image::SetOnerror) {
+  if (value->IsFunction()) {
+    Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+    img->onerror = new Nan::Callback(value.As<Function>());
+  } else if (value->IsNull()) {
+    Image *img = Nan::ObjectWrap::Unwrap<Image>(info.This());
+    if (img->onerror) {
+        delete img->onerror;
+    }
+    img->onerror = NULL;
+  }
+}
+
+/*
+ * Initialize a new Image.
+ */
+
+Image::Image() {
+  filename = NULL;
+  _data = NULL;
+  _data_len = 0;
+  _surface = NULL;
+  width = height = 0;
+  state = DEFAULT;
+  onload = NULL;
+  onerror = NULL;
+}
+
+/*
+ * Destroy image and associated surface.
+ */
+
+Image::~Image() {
+  clearData();
+
+  if (onerror) {
+    delete onerror;
+    onerror = NULL;
+  }
+
+  if (onload) {
+    delete onload;
+    onload = NULL;
+  }
+}
+
+/*
+ * Initiate image loading.
+ */
+
+cairo_status_t
+Image::load() {
+  if (LOADING != state) {
+    state = LOADING;
+    return loadSurface();
+  }
+  return CAIRO_STATUS_READ_ERROR;
+}
+
+/*
+ * Invoke onload (when assigned) and assign dimensions.
+ */
+
+void
+Image::loaded() {
+  Nan::HandleScope scope;
+  state = COMPLETE;
+
+  width = cairo_image_surface_get_width(_surface);
+  height = cairo_image_surface_get_height(_surface);
+  _data_len = height * cairo_image_surface_get_stride(_surface);
+  Nan::AdjustExternalMemory(_data_len);
+
+  if (onload != NULL) {
+    onload->Call(0, NULL);
+  }
+}
+
+/*
+ * Invoke onerror (when assigned) with the given err.
+ */
+
+void
+Image::error(Local<Value> err) {
+  Nan::HandleScope scope;
+  if (onerror != NULL) {
+    Local<Value> argv[1] = { err };
+    onerror->Call(1, argv);
+  }
+}
+
+/*
+ * Load cairo surface from the image src.
+ *
+ * TODO: support more formats
+ * TODO: use node IO or at least thread pool
+ */
+
+cairo_status_t
+Image::loadSurface() {
+  FILE *stream = fopen(filename, "rb");
+  if (!stream) return CAIRO_STATUS_READ_ERROR;
+  uint8_t buf[5];
+  if (1 != fread(&buf, 5, 1, stream)) {
+    fclose(stream);
+    return CAIRO_STATUS_READ_ERROR;
+  }
+  fseek(stream, 0, SEEK_SET);
+
+  // png
+  if (isPNG(buf)) {
+    fclose(stream);
+    return loadPNG();
+  }
+
+  // gif
+#ifdef HAVE_GIF
+  if (isGIF(buf)) return loadGIF(stream);
+#endif
+
+  // jpeg
+#ifdef HAVE_JPEG
+  if (isJPEG(buf)) return loadJPEG(stream);
+#endif
+
+  fclose(stream);
+  return CAIRO_STATUS_READ_ERROR;
+}
+
+/*
+ * Load PNG.
+ */
+
+cairo_status_t
+Image::loadPNG() {
+  _surface = cairo_image_surface_create_from_png(filename);
+  return cairo_surface_status(_surface);
+}
+
+// GIF support
+
+#ifdef HAVE_GIF
+
+/*
+ * Return the alpha color for `gif` at `frame`, or -1.
+ */
+
+int
+get_gif_transparent_color(GifFileType *gif, int frame) {
+  ExtensionBlock *ext = gif->SavedImages[frame].ExtensionBlocks;
+  int len = gif->SavedImages[frame].ExtensionBlockCount;
+  for (int x = 0; x < len; ++x, ++ext) {
+    if ((ext->Function == GRAPHICS_EXT_FUNC_CODE) && (ext->Bytes[0] & 1)) {
+      return ext->Bytes[3] == 0 ? 0 : (uint8_t) ext->Bytes[3];
+    }
+  }
+  return -1;
+}
+
+/*
+ * Memory GIF reader callback.
+ */
+
+int
+read_gif_from_memory(GifFileType *gif, GifByteType *buf, int len) {
+  gif_data_t *data = (gif_data_t *) gif->UserData;
+  if ((data->pos + len) > data->len) len = data->len - data->pos;
+  memcpy(buf, data->pos + data->buf, len);
+  data->pos += len;
+  return len;
+}
+
+/*
+ * Load GIF.
+ */
+
+cairo_status_t
+Image::loadGIF(FILE *stream) {
+  struct stat s;
+  int fd = fileno(stream);
+
+  // stat
+  if (fstat(fd, &s) < 0) {
+    fclose(stream);
+    return CAIRO_STATUS_READ_ERROR;
+  }
+
+  uint8_t *buf = (uint8_t *) malloc(s.st_size);
+
+  if (!buf) {
+    fclose(stream);
+    return CAIRO_STATUS_NO_MEMORY;
+  }
+
+  size_t read = fread(buf, s.st_size, 1, stream);
+  fclose(stream);
+
+  cairo_status_t result = CAIRO_STATUS_READ_ERROR;
+  if (1 == read) result = loadGIFFromBuffer(buf, s.st_size);
+  free(buf);
+
+  return result;
+}
+
+/*
+ * Load give from `buf` and the given `len`.
+ */
+
+cairo_status_t
+Image::loadGIFFromBuffer(uint8_t *buf, unsigned len) {
+  int i = 0;
+  GifFileType* gif;
+
+  gif_data_t gifd = { buf, len, 0 };
+
+#if GIFLIB_MAJOR >= 5
+  int errorcode;
+  if ((gif = DGifOpen((void*) &gifd, read_gif_from_memory, &errorcode)) == NULL)
+    return CAIRO_STATUS_READ_ERROR;
+#else
+  if ((gif = DGifOpen((void*) &gifd, read_gif_from_memory)) == NULL)
+    return CAIRO_STATUS_READ_ERROR;
+#endif
+
+  if (GIF_OK != DGifSlurp(gif)) {
+    GIF_CLOSE_FILE(gif);
+    return CAIRO_STATUS_READ_ERROR;
+  }
+
+  width = gif->SWidth;
+  height = gif->SHeight;
+
+  uint8_t *data = (uint8_t *) malloc(width * height * 4);
+  if (!data) {
+    GIF_CLOSE_FILE(gif);
+    return CAIRO_STATUS_NO_MEMORY;
+  }
+
+  GifImageDesc *img = &gif->SavedImages[i].ImageDesc;
+
+  // local colormap takes precedence over global
+  ColorMapObject *colormap = img->ColorMap
+    ? img->ColorMap
+    : gif->SColorMap;
+
+  int bgColor = 0;
+  int alphaColor = get_gif_transparent_color(gif, i);
+  if (gif->SColorMap) bgColor = (uint8_t) gif->SBackGroundColor;
+  else if(alphaColor >= 0) bgColor = alphaColor;
+
+  uint8_t *src_data = (uint8_t*) gif->SavedImages[i].RasterBits;
+  uint32_t *dst_data = (uint32_t*) data;
+
+  if (!gif->Image.Interlace) {
+    if (width == img->Width && height == img->Height) {
+      for (int y = 0; y < height; ++y) {
+        for (int x = 0; x < width; ++x) {
+          *dst_data = ((*src_data == alphaColor) ? 0 : 255) << 24
+            | colormap->Colors[*src_data].Red << 16
+            | colormap->Colors[*src_data].Green << 8
+            | colormap->Colors[*src_data].Blue;
+
+          dst_data++;
+          src_data++;
+        }
+      }
+    } else {
+      // Image does not take up whole "screen" so we need to fill-in the background
+      int bottom = img->Top + img->Height;
+      int right = img->Left + img->Width;
+
+      for (int y = 0; y < height; ++y) {
+        for (int x = 0; x < width; ++x) {
+          if (y < img->Top || y >= bottom || x < img->Left || x >= right) {
+            *dst_data = ((bgColor == alphaColor) ? 0 : 255) << 24
+              | colormap->Colors[bgColor].Red << 16
+              | colormap->Colors[bgColor].Green << 8
+              | colormap->Colors[bgColor].Blue;
+          } else {
+            *dst_data = ((*src_data == alphaColor) ? 0 : 255) << 24
+              | colormap->Colors[*src_data].Red << 16
+              | colormap->Colors[*src_data].Green << 8
+              | colormap->Colors[*src_data].Blue;
+          }
+
+          dst_data++;
+          src_data++;
+        }
+      }
+    }
+  } else {
+    // Image is interlaced so that it streams nice over 14.4k and 28.8k modems :)
+    // We first load in 1/8 of the image, followed by another 1/8, followed by
+    // 1/4 and finally the remaining 1/2.
+    int ioffs[] = { 0, 4, 2, 1 };
+    int ijumps[] = { 8, 8, 4, 2 };
+
+    uint8_t *src_ptr = src_data;
+    uint32_t *dst_ptr;
+
+    for(int z = 0; z < 4; z++) {
+      for(int y = ioffs[z]; y < height; y += ijumps[z]) {
+        dst_ptr = dst_data + width * y;
+        for(int x = 0; x < width; ++x) {
+          *dst_ptr = ((*src_ptr == alphaColor) ? 0 : 255) << 24
+            | (colormap->Colors[*src_ptr].Red) << 16
+            | (colormap->Colors[*src_ptr].Green) << 8
+            | (colormap->Colors[*src_ptr].Blue);
+
+          dst_ptr++;
+          src_ptr++;
+        }
+      }
+    }
+  }
+
+  GIF_CLOSE_FILE(gif);
+
+  // New image surface
+  _surface = cairo_image_surface_create_for_data(
+      data
+    , CAIRO_FORMAT_ARGB32
+    , width
+    , height
+    , cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width));
+
+  cairo_status_t status = cairo_surface_status(_surface);
+
+  if (status) {
+    free(data);
+    return status;
+  }
+
+  _data = data;
+
+  return CAIRO_STATUS_SUCCESS;
+}
+#endif /* HAVE_GIF */
+
+// JPEG support
+
+#ifdef HAVE_JPEG
+
+// libjpeg 6.2 does not have jpeg_mem_src; define it ourselves here unless
+// libjpeg 8 is installed.
+#if JPEG_LIB_VERSION < 80
+
+/* Read JPEG image from a memory segment */
+static void
+init_source(j_decompress_ptr cinfo) {}
+
+static boolean
+fill_input_buffer(j_decompress_ptr cinfo) {
+  ERREXIT(cinfo, JERR_INPUT_EMPTY);
+  return TRUE;
+}
+static void
+skip_input_data(j_decompress_ptr cinfo, long num_bytes) {
+  struct jpeg_source_mgr* src = (struct jpeg_source_mgr*) cinfo->src;
+  if (num_bytes > 0) {
+    src->next_input_byte += (size_t) num_bytes;
+    src->bytes_in_buffer -= (size_t) num_bytes;
+  }
+}
+
+static void term_source (j_decompress_ptr cinfo) {}
+static void jpeg_mem_src (j_decompress_ptr cinfo, void* buffer, long nbytes) {
+  struct jpeg_source_mgr* src;
+
+  if (cinfo->src == NULL) {
+    cinfo->src = (struct jpeg_source_mgr *)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+                                  sizeof(struct jpeg_source_mgr));
+  }
+
+  src = (struct jpeg_source_mgr*) cinfo->src;
+  src->init_source = init_source;
+  src->fill_input_buffer = fill_input_buffer;
+  src->skip_input_data = skip_input_data;
+  src->resync_to_restart = jpeg_resync_to_restart; /* use default method */
+  src->term_source = term_source;
+  src->bytes_in_buffer = nbytes;
+  src->next_input_byte = (JOCTET*)buffer;
+}
+
+#endif
+
+/*
+ * Takes an initialised jpeg_decompress_struct and decodes the
+ * data into _surface.
+ */
+
+cairo_status_t
+Image::decodeJPEGIntoSurface(jpeg_decompress_struct *args) {
+  int stride = width * 4;
+  cairo_status_t status;
+
+  uint8_t *data = (uint8_t *) malloc(width * height * 4);
+  if (!data) {
+    jpeg_abort_decompress(args);
+    jpeg_destroy_decompress(args);
+    return CAIRO_STATUS_NO_MEMORY;
+  }
+
+  uint8_t *src = (uint8_t *) malloc(width * args->output_components);
+  if (!src) {
+    free(data);
+    jpeg_abort_decompress(args);
+    jpeg_destroy_decompress(args);
+    return CAIRO_STATUS_NO_MEMORY;
+  }
+
+  for (int y = 0; y < height; ++y) {
+    jpeg_read_scanlines(args, &src, 1);
+    uint32_t *row = (uint32_t *)(data + stride * y);
+    for (int x = 0; x < width; ++x) {
+      if (args->jpeg_color_space == 1) {
+        uint32_t *pixel = row + x;
+        *pixel = 255 << 24
+          | src[x] << 16
+          | src[x] << 8
+          | src[x];
+      } else {
+        int bx = 3 * x;
+        uint32_t *pixel = row + x;
+        *pixel = 255 << 24
+          | src[bx + 0] << 16
+          | src[bx + 1] << 8
+          | src[bx + 2];
+      }
+    }
+  }
+
+  _surface = cairo_image_surface_create_for_data(
+      data
+    , CAIRO_FORMAT_ARGB32
+    , width
+    , height
+    , cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width));
+
+  jpeg_finish_decompress(args);
+  jpeg_destroy_decompress(args);
+  status = cairo_surface_status(_surface);
+
+  if (status) {
+    free(data);
+    free(src);
+    return status;
+  }
+
+  free(src);
+
+  _data = data;
+
+  return CAIRO_STATUS_SUCCESS;
+}
+
+#if CAIRO_VERSION_MINOR >= 10
+
+/*
+ * Takes a jpeg data buffer and assigns it as mime data to a
+ * dummy surface
+ */
+
+cairo_status_t
+Image::decodeJPEGBufferIntoMimeSurface(uint8_t *buf, unsigned len) {
+  // TODO: remove this duplicate logic
+  // JPEG setup
+  struct jpeg_decompress_struct args;
+  struct jpeg_error_mgr err;
+  args.err = jpeg_std_error(&err);
+  jpeg_create_decompress(&args);
+
+  jpeg_mem_src(&args, buf, len);
+
+  jpeg_read_header(&args, 1);
+  jpeg_start_decompress(&args);
+  width = args.output_width;
+  height = args.output_height;
+
+  // Data alloc
+  // 8 pixels per byte using Alpha Channel format to reduce memory requirement.
+  int buf_size = height * cairo_format_stride_for_width(CAIRO_FORMAT_A1, width);
+  uint8_t *data = (uint8_t *) malloc(buf_size);
+  if (!data) return CAIRO_STATUS_NO_MEMORY;
+
+  // New image surface
+  _surface = cairo_image_surface_create_for_data(
+      data
+    , CAIRO_FORMAT_A1
+    , width
+    , height
+    , cairo_format_stride_for_width(CAIRO_FORMAT_A1, width));
+
+  // Cleanup
+  jpeg_abort_decompress(&args);
+  jpeg_destroy_decompress(&args);
+  cairo_status_t status = cairo_surface_status(_surface);
+
+  if (status) {
+    free(data);
+    return status;
+  }
+
+  _data = data;
+
+  return assignDataAsMime(buf, len, CAIRO_MIME_TYPE_JPEG);
+}
+
+/*
+ * Helper function for disposing of a mime data closure.
+ */
+
+void
+clearMimeData(void *closure) {
+  Nan::AdjustExternalMemory(-((read_closure_t *)closure)->len);
+  free(((read_closure_t *) closure)->buf);
+  free(closure);
+}
+
+/*
+ * Assign a given buffer as mime data against the surface.
+ * The provided buffer will be copied, and the copy will
+ * be automatically freed when the surface is destroyed.
+ */
+
+cairo_status_t
+Image::assignDataAsMime(uint8_t *data, int len, const char *mime_type) {
+  uint8_t *mime_data = (uint8_t *) malloc(len);
+  if (!mime_data) return CAIRO_STATUS_NO_MEMORY;
+
+  read_closure_t *mime_closure = (read_closure_t *) malloc(sizeof(read_closure_t));
+  if (!mime_closure) {
+    free(mime_data);
+    return CAIRO_STATUS_NO_MEMORY;
+  }
+
+  memcpy(mime_data, data, len);
+
+  mime_closure->buf = mime_data;
+  mime_closure->len = len;
+
+  Nan::AdjustExternalMemory(len);
+
+  return cairo_surface_set_mime_data(_surface
+    , mime_type
+    , mime_data
+    , len
+    , clearMimeData
+    , mime_closure);
+}
+
+#endif
+
+/*
+ * Load jpeg from buffer.
+ */
+
+cairo_status_t
+Image::loadJPEGFromBuffer(uint8_t *buf, unsigned len) {
+  // TODO: remove this duplicate logic
+  // JPEG setup
+  struct jpeg_decompress_struct args;
+  struct jpeg_error_mgr err;
+  args.err = jpeg_std_error(&err);
+  jpeg_create_decompress(&args);
+
+  jpeg_mem_src(&args, buf, len);
+
+  jpeg_read_header(&args, 1);
+  jpeg_start_decompress(&args);
+  width = args.output_width;
+  height = args.output_height;
+
+  return decodeJPEGIntoSurface(&args);
+}
+
+/*
+ * Load JPEG, convert RGB to ARGB.
+ */
+
+cairo_status_t
+Image::loadJPEG(FILE *stream) {
+  cairo_status_t status;
+
+  if (data_mode == DATA_IMAGE) { // Can lazily read in the JPEG.
+    // JPEG setup
+    struct jpeg_decompress_struct args;
+    struct jpeg_error_mgr err;
+    args.err = jpeg_std_error(&err);
+    jpeg_create_decompress(&args);
+
+    jpeg_stdio_src(&args, stream);
+
+    jpeg_read_header(&args, 1);
+    jpeg_start_decompress(&args);
+    width = args.output_width;
+    height = args.output_height;
+
+    status = decodeJPEGIntoSurface(&args);
+    fclose(stream);
+  } else { // We'll need the actual source jpeg data, so read fully.
+#if CAIRO_VERSION_MINOR >= 10
+    uint8_t *buf;
+    unsigned len;
+
+    fseek(stream, 0, SEEK_END);
+    len = ftell(stream);
+    fseek(stream, 0, SEEK_SET);
+
+    buf = (uint8_t *) malloc(len);
+    if (!buf) return CAIRO_STATUS_NO_MEMORY;
+
+    if (fread(buf, len, 1, stream) != 1) {
+      status = CAIRO_STATUS_READ_ERROR;
+    } else if ((DATA_IMAGE | DATA_MIME) == data_mode) {
+      status = loadJPEGFromBuffer(buf, len);
+      if (!status) status = assignDataAsMime(buf, len, CAIRO_MIME_TYPE_JPEG);
+    } else if (DATA_MIME == data_mode) {
+      status = decodeJPEGBufferIntoMimeSurface(buf, len);
+    } else {
+      status = CAIRO_STATUS_READ_ERROR;
+    }
+
+    fclose(stream);
+    free(buf);
+#else
+    status = CAIRO_STATUS_READ_ERROR;
+#endif
+  }
+
+  return status;
+}
+
+#endif /* HAVE_JPEG */
+
+/*
+ * Return UNKNOWN, JPEG, or PNG based on the filename.
+ */
+
+Image::type
+Image::extension(const char *filename) {
+  size_t len = strlen(filename);
+  filename += len;
+  if (len >= 5 && 0 == strcmp(".jpeg", filename - 5)) return Image::JPEG;
+  if (len >= 4 && 0 == strcmp(".gif", filename - 4)) return Image::GIF;
+  if (len >= 4 && 0 == strcmp(".jpg", filename - 4)) return Image::JPEG;
+  if (len >= 4 && 0 == strcmp(".png", filename - 4)) return Image::PNG;
+  return Image::UNKNOWN;
+}
+
+/*
+ * Sniff bytes 0..1 for JPEG's magic number ff d8.
+ */
+
+int
+Image::isJPEG(uint8_t *data) {
+  return 0xff == data[0] && 0xd8 == data[1];
+}
+
+/*
+ * Sniff bytes 0..2 for "GIF".
+ */
+
+int
+Image::isGIF(uint8_t *data) {
+  return 'G' == data[0] && 'I' == data[1] && 'F' == data[2];
+}
+
+/*
+ * Sniff bytes 1..3 for "PNG".
+ */
+
+int
+Image::isPNG(uint8_t *data) {
+  return 'P' == data[1] && 'N' == data[2] && 'G' == data[3];
+}

hm_sunwell/node_modules/canvas/src/Image.h

@@ -0,0 +1,108 @@
+
+//
+// Image.h
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __NODE_IMAGE_H__
+#define __NODE_IMAGE_H__
+
+#include "Canvas.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
+
+
+
+class Image: public Nan::ObjectWrap {
+  public:
+    char *filename;
+    int width, height;
+    Nan::Callback *onload;
+    Nan::Callback *onerror;
+    static Nan::Persistent<FunctionTemplate> constructor;
+    static void Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target);
+    static NAN_METHOD(New);
+    static NAN_GETTER(GetSource);
+    static NAN_GETTER(GetOnload);
+    static NAN_GETTER(GetOnerror);
+    static NAN_GETTER(GetComplete);
+    static NAN_GETTER(GetWidth);
+    static NAN_GETTER(GetHeight);
+    static NAN_GETTER(GetDataMode);
+    static NAN_SETTER(SetSource);
+    static NAN_SETTER(SetOnload);
+    static NAN_SETTER(SetOnerror);
+    static NAN_SETTER(SetDataMode);
+    inline cairo_surface_t *surface(){ return _surface; }
+    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 cairo_status_t readPNG(void *closure, unsigned char *data, unsigned len);
+    inline int isComplete(){ return COMPLETE == state; }
+    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_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);
+    cairo_status_t decodeJPEGIntoSurface(jpeg_decompress_struct *info);
+#if CAIRO_VERSION_MINOR >= 10
+    cairo_status_t decodeJPEGBufferIntoMimeSurface(uint8_t *buf, unsigned len);
+    cairo_status_t assignDataAsMime(uint8_t *data, int len, const char *mime_type);
+#endif
+#endif
+    void error(Local<Value> error);
+    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
+    } type;
+
+    static type extension(const char *filename);
+
+  private:
+    cairo_surface_t *_surface;
+    uint8_t *_data;
+    int _data_len;
+    ~Image();
+};
+
+#endif

hm_sunwell/node_modules/canvas/src/ImageData.cc

@@ -0,0 +1,135 @@
+
+//
+// ImageData.cc
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#include "ImageData.h"
+
+Nan::Persistent<FunctionTemplate> ImageData::constructor;
+
+/*
+ * Initialize ImageData.
+ */
+
+void
+ImageData::Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target) {
+  Nan::HandleScope scope;
+
+  // Constructor
+  Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(ImageData::New);
+  constructor.Reset(ctor);
+  ctor->InstanceTemplate()->SetInternalFieldCount(1);
+  ctor->SetClassName(Nan::New("ImageData").ToLocalChecked());
+
+  // Prototype
+  Local<ObjectTemplate> proto = ctor->PrototypeTemplate();
+  Nan::SetAccessor(proto, Nan::New("width").ToLocalChecked(), GetWidth);
+  Nan::SetAccessor(proto, Nan::New("height").ToLocalChecked(), GetHeight);
+  Nan::Set(target, Nan::New("ImageData").ToLocalChecked(), ctor->GetFunction());
+}
+
+/*
+ * Initialize a new ImageData object.
+ */
+
+NAN_METHOD(ImageData::New) {
+  if (!info.IsConstructCall()) {
+    return Nan::ThrowTypeError("Class constructors cannot be invoked without 'new'");
+  }
+
+#if NODE_MAJOR_VERSION == 0 && NODE_MINOR_VERSION <= 10
+  Local<v8::Object> clampedArray;
+  Local<Object> global = Context::GetCurrent()->Global();
+#else
+  Local<Uint8ClampedArray> clampedArray;
+#endif
+
+  uint32_t width;
+  uint32_t height;
+  int length;
+
+  if (info[0]->IsUint32() && info[1]->IsUint32()) {
+    width = info[0]->Uint32Value();
+    if (width == 0) {
+      Nan::ThrowRangeError("The source width is zero.");
+      return;
+    }
+    height = info[1]->Uint32Value();
+    if (height == 0) {
+      Nan::ThrowRangeError("The source height is zero.");
+      return;
+    }
+    length = width * height * 4;
+
+#if NODE_MAJOR_VERSION == 0 && NODE_MINOR_VERSION <= 10
+    Local<Int32> sizeHandle = Nan::New(length);
+    Local<Value> caargv[] = { sizeHandle };
+    clampedArray = global->Get(Nan::New("Uint8ClampedArray").ToLocalChecked()).As<Function>()->NewInstance(1, caargv);
+#else
+    clampedArray = Uint8ClampedArray::New(ArrayBuffer::New(Isolate::GetCurrent(), length), 0, length);
+#endif
+
+#if NODE_MAJOR_VERSION == 0 && NODE_MINOR_VERSION <= 10
+  } else if (info[0]->ToObject()->GetIndexedPropertiesExternalArrayDataType() == kExternalPixelArray && info[1]->IsUint32()) {
+    clampedArray = info[0]->ToObject();
+    length = clampedArray->GetIndexedPropertiesExternalArrayDataLength();
+#else
+  } else if (info[0]->IsUint8ClampedArray() && info[1]->IsUint32()) {
+    clampedArray = info[0].As<Uint8ClampedArray>();
+    length = clampedArray->Length();
+#endif
+    if (length == 0) {
+      Nan::ThrowRangeError("The input data has a zero byte length.");
+      return;
+    }
+    if (length % 4 != 0) {
+      Nan::ThrowRangeError("The input data byte length is not a multiple of 4.");
+      return;
+    }
+    width = info[1]->Uint32Value();
+    int size = length / 4;
+    if (width == 0) {
+      Nan::ThrowRangeError("The source width is zero.");
+      return;
+    }
+    if (size % width != 0) {
+      Nan::ThrowRangeError("The input data byte length is not a multiple of (4 * width).");
+      return;
+    }
+    height = size / width;
+    if (info[2]->IsUint32() && info[2]->Uint32Value() != height) {
+      Nan::ThrowRangeError("The input data byte length is not equal to (4 * width * height).");
+      return;
+    }
+  } else {
+    Nan::ThrowTypeError("Expected (Uint8ClampedArray, width[, height]) or (width, height)");
+    return;
+  }
+
+  Nan::TypedArrayContents<uint8_t> dataPtr(clampedArray);
+
+  ImageData *imageData = new ImageData(reinterpret_cast<uint8_t*>(*dataPtr), width, height);
+  imageData->Wrap(info.This());
+  info.This()->Set(Nan::New("data").ToLocalChecked(), clampedArray);
+  info.GetReturnValue().Set(info.This());
+}
+
+/*
+ * Get width.
+ */
+
+NAN_GETTER(ImageData::GetWidth) {
+  ImageData *imageData = Nan::ObjectWrap::Unwrap<ImageData>(info.This());
+  info.GetReturnValue().Set(Nan::New<Number>(imageData->width()));
+}
+
+/*
+ * Get height.
+ */
+
+NAN_GETTER(ImageData::GetHeight) {
+  ImageData *imageData = Nan::ObjectWrap::Unwrap<ImageData>(info.This());
+  info.GetReturnValue().Set(Nan::New<Number>(imageData->height()));
+}

hm_sunwell/node_modules/canvas/src/ImageData.h

@@ -0,0 +1,36 @@
+
+//
+// ImageData.h
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __NODE_IMAGE_DATA_H__
+#define __NODE_IMAGE_DATA_H__
+
+#include "Canvas.h"
+#include <stdlib.h>
+#include "v8.h"
+
+class ImageData: public Nan::ObjectWrap {
+  public:
+    static Nan::Persistent<FunctionTemplate> constructor;
+    static void Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target);
+    static NAN_METHOD(New);
+    static NAN_GETTER(GetWidth);
+    static NAN_GETTER(GetHeight);
+
+    inline int width() { return _width; }
+    inline int height() { return _height; }
+    inline uint8_t *data() { return _data; }
+    inline int stride() { return _width * 4; }
+    ImageData(uint8_t *data, int width, int height) : _width(width), _height(height), _data(data) {}
+
+  private:
+    int _width;
+    int _height;
+    uint8_t *_data;
+
+};
+
+#endif

hm_sunwell/node_modules/canvas/src/JPEGStream.h

@@ -0,0 +1,146 @@
+
+//
+// JPEGStream.h
+//
+
+#ifndef __NODE_JPEG_STREAM_H__
+#define __NODE_JPEG_STREAM_H__
+
+#include "Canvas.h"
+#include <jpeglib.h>
+#include <jerror.h>
+
+/*
+ * Expanded data destination object for closure output,
+ * inspired by IJG's jdatadst.c
+ */
+
+typedef struct {
+  struct jpeg_destination_mgr pub;
+  closure_t *closure;
+  JOCTET *buffer;
+  int bufsize;
+} closure_destination_mgr;
+
+void
+init_closure_destination(j_compress_ptr cinfo){
+  // we really don't have to do anything here
+}
+
+boolean
+empty_closure_output_buffer(j_compress_ptr cinfo){
+  Nan::HandleScope scope;
+  closure_destination_mgr *dest = (closure_destination_mgr *) cinfo->dest;
+
+  Local<Object> buf = Nan::NewBuffer((char *)dest->buffer, dest->bufsize).ToLocalChecked();
+
+  // emit "data"
+  Local<Value> argv[2] = {
+      Nan::Null()
+    , buf
+  };
+  Nan::MakeCallback(Nan::GetCurrentContext()->Global(), (v8::Local<v8::Function>)dest->closure->fn, 2, argv);
+
+  dest->buffer = (JOCTET *)malloc(dest->bufsize);
+  cinfo->dest->next_output_byte = dest->buffer;
+  cinfo->dest->free_in_buffer = dest->bufsize;
+  return true;
+}
+
+void
+term_closure_destination(j_compress_ptr cinfo){
+  Nan::HandleScope scope;
+  closure_destination_mgr *dest = (closure_destination_mgr *) cinfo->dest;
+
+  /* emit remaining data */
+  Local<Object> buf = Nan::NewBuffer((char *)dest->buffer, dest->bufsize - dest->pub.free_in_buffer).ToLocalChecked();
+
+  Local<Value> data_argv[2] = {
+      Nan::Null()
+    , buf
+  };
+
+  Nan::MakeCallback(Nan::GetCurrentContext()->Global(), (v8::Local<v8::Function>)dest->closure->fn, 2, data_argv);
+
+  // emit "end"
+  Local<Value> end_argv[2] = {
+      Nan::Null()
+    , Nan::Null()
+  };
+
+  Nan::MakeCallback(Nan::GetCurrentContext()->Global(), (v8::Local<v8::Function>)dest->closure->fn, 2, end_argv);
+}
+
+void
+jpeg_closure_dest(j_compress_ptr cinfo, closure_t * closure, int bufsize){
+  closure_destination_mgr * dest;
+
+  /* The destination object is made permanent so that multiple JPEG images
+   * can be written to the same buffer without re-executing jpeg_mem_dest.
+   */
+  if (cinfo->dest == NULL) {  /* first time for this JPEG object? */
+    cinfo->dest = (struct jpeg_destination_mgr *)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+         sizeof(closure_destination_mgr));
+  }
+
+  dest = (closure_destination_mgr *) cinfo->dest;
+
+  cinfo->dest->init_destination = &init_closure_destination;
+  cinfo->dest->empty_output_buffer = &empty_closure_output_buffer;
+  cinfo->dest->term_destination = &term_closure_destination;
+
+  dest->closure = closure;
+  dest->bufsize = bufsize;
+  dest->buffer = (JOCTET *)malloc(bufsize);
+
+  cinfo->dest->next_output_byte = dest->buffer;
+  cinfo->dest->free_in_buffer = dest->bufsize;
+}
+
+void
+write_to_jpeg_stream(cairo_surface_t *surface, int bufsize, int quality, bool progressive, closure_t *closure){
+  int w = cairo_image_surface_get_width(surface);
+  int h = cairo_image_surface_get_height(surface);
+  struct jpeg_compress_struct cinfo;
+  struct jpeg_error_mgr jerr;
+
+  JSAMPROW slr;
+  cinfo.err = jpeg_std_error(&jerr);
+  jpeg_create_compress(&cinfo);
+  cinfo.in_color_space = JCS_RGB;
+  cinfo.input_components = 3;
+  cinfo.image_width = w;
+  cinfo.image_height = h;
+  jpeg_set_defaults(&cinfo);
+  if (progressive)
+     jpeg_simple_progression(&cinfo);
+  jpeg_set_quality(&cinfo, quality, (quality<25)?0:1);
+  jpeg_closure_dest(&cinfo, closure, bufsize);
+
+  jpeg_start_compress(&cinfo, TRUE);
+  unsigned char *dst;
+  unsigned int *src = (unsigned int *) cairo_image_surface_get_data(surface);
+  int sl = 0;
+  dst = (unsigned char *) malloc(w * 3);
+  while (sl < h) {
+    unsigned char *dp = dst;
+    int x = 0;
+    while (x < w) {
+      dp[0] = (*src >> 16) & 255;
+      dp[1] = (*src >> 8) & 255;
+      dp[2] = *src & 255;
+      src++;
+      dp += 3;
+      x++;
+    }
+    slr = dst;
+    jpeg_write_scanlines(&cinfo, &slr, 1);
+    sl++;
+  }
+  free(dst);
+  jpeg_finish_compress(&cinfo);
+  jpeg_destroy_compress(&cinfo);
+}
+
+#endif

hm_sunwell/node_modules/canvas/src/PNG.h

@@ -0,0 +1,227 @@
+#ifndef _CANVAS_PNG_H
+#define _CANVAS_PNG_H
+#include <png.h>
+#include <pngconf.h>
+#include <cairo.h>
+#include <stdlib.h>
+#include <string.h>
+#include "closure.h"
+
+#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
+#define likely(expr) (__builtin_expect (!!(expr), 1))
+#define unlikely(expr) (__builtin_expect (!!(expr), 0))
+#else
+#define likely(expr) (expr)
+#define unlikely(expr) (expr)
+#endif
+
+#ifndef CAIRO_FORMAT_INVALID
+#define CAIRO_FORMAT_INVALID -1
+#endif
+
+static void canvas_png_flush(png_structp png_ptr) {
+    /* Do nothing; fflush() is said to be just a waste of energy. */
+    (void) png_ptr;   /* Stifle compiler warning */
+}
+
+/* Converts native endian xRGB => RGBx bytes */
+static void canvas_convert_data_to_bytes(png_structp png, png_row_infop row_info, png_bytep data) {
+    unsigned int i;
+
+    for (i = 0; i < row_info->rowbytes; i += 4) {
+        uint8_t *b = &data[i];
+        uint32_t pixel;
+
+        memcpy(&pixel, b, sizeof (uint32_t));
+
+        b[0] = (pixel & 0xff0000) >> 16;
+        b[1] = (pixel & 0x00ff00) >>  8;
+        b[2] = (pixel & 0x0000ff) >>  0;
+        b[3] = 0;
+    }
+}
+
+/* Unpremultiplies data and converts native endian ARGB => RGBA bytes */
+static void canvas_unpremultiply_data(png_structp png, png_row_infop row_info, png_bytep data) {
+    unsigned int i;
+
+    for (i = 0; i < row_info->rowbytes; i += 4) {
+        uint8_t *b = &data[i];
+        uint32_t pixel;
+        uint8_t  alpha;
+
+        memcpy(&pixel, b, sizeof (uint32_t));
+        alpha = (pixel & 0xff000000) >> 24;
+        if (alpha == 0) {
+            b[0] = b[1] = b[2] = b[3] = 0;
+        } else {
+            b[0] = (((pixel & 0xff0000) >> 16) * 255 + alpha / 2) / alpha;
+            b[1] = (((pixel & 0x00ff00) >>  8) * 255 + alpha / 2) / alpha;
+            b[2] = (((pixel & 0x0000ff) >>  0) * 255 + alpha / 2) / alpha;
+            b[3] = alpha;
+        }
+    }
+}
+
+struct canvas_png_write_closure_t {
+    cairo_write_func_t write_func;
+    void *closure;
+};
+
+static cairo_status_t canvas_write_png(cairo_surface_t *surface, png_rw_ptr write_func, void *closure) {
+    unsigned int i;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    uint8_t *data;
+    png_structp png;
+    png_infop info;
+    png_bytep *volatile rows = NULL;
+    png_color_16 white;
+    int png_color_type;
+    int bpc;
+    unsigned int width = cairo_image_surface_get_width(surface);
+    unsigned int height = cairo_image_surface_get_height(surface);
+
+    data = cairo_image_surface_get_data(surface);
+    if (data == NULL) {
+        status = CAIRO_STATUS_SURFACE_TYPE_MISMATCH;
+        return status;
+    }
+    cairo_surface_flush(surface);
+
+    if (width == 0 || height == 0) {
+        status = CAIRO_STATUS_WRITE_ERROR;
+        return status;
+    }
+
+    rows = (png_bytep *) malloc(height * sizeof (png_byte*));
+    if (unlikely(rows == NULL)) {
+        status = CAIRO_STATUS_NO_MEMORY;
+        return status;
+    }
+
+    for (i = 0; i < height; i++) {
+	rows[i] = (png_byte *) data + i * cairo_image_surface_get_stride(surface);
+    }
+
+#ifdef PNG_USER_MEM_SUPPORTED
+     png = png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL, NULL, NULL, NULL);
+#else
+    png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+#endif
+
+    if (unlikely(png == NULL)) {
+        status = CAIRO_STATUS_NO_MEMORY;
+        free(rows);
+        return status;
+    }
+
+    info = png_create_info_struct (png);
+    if (unlikely(info == NULL)) {
+        status = CAIRO_STATUS_NO_MEMORY;
+        png_destroy_write_struct(&png, &info);
+        free(rows);
+        return status;
+
+    }
+
+#ifdef PNG_SETJMP_SUPPORTED
+    if (setjmp (png_jmpbuf (png))) {
+        png_destroy_write_struct(&png, &info);
+        free(rows);
+        return status;
+    }
+#endif
+
+    png_set_write_fn(png, closure, write_func, canvas_png_flush);
+    png_set_compression_level(png, ((closure_t *) ((canvas_png_write_closure_t *) closure)->closure)->compression_level);
+    png_set_filter(png, 0, ((closure_t *) ((canvas_png_write_closure_t *) closure)->closure)->filter);
+
+    switch (cairo_image_surface_get_format(surface)) {
+    case CAIRO_FORMAT_ARGB32:
+        bpc = 8;
+        png_color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+        break;
+#ifdef CAIRO_FORMAT_RGB30
+    case CAIRO_FORMAT_RGB30:
+        bpc = 10;
+        png_color_type = PNG_COLOR_TYPE_RGB;
+        break;
+#endif
+    case CAIRO_FORMAT_RGB24:
+        bpc = 8;
+        png_color_type = PNG_COLOR_TYPE_RGB;
+        break;
+    case CAIRO_FORMAT_A8:
+        bpc = 8;
+        png_color_type = PNG_COLOR_TYPE_GRAY;
+        break;
+    case CAIRO_FORMAT_A1:
+        bpc = 1;
+        png_color_type = PNG_COLOR_TYPE_GRAY;
+#ifndef WORDS_BIGENDIAN
+        png_set_packswap(png);
+#endif
+        break;
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_RGB16_565:
+    default:
+        status = CAIRO_STATUS_INVALID_FORMAT;
+        png_destroy_write_struct(&png, &info);
+        free(rows);
+        return status;
+    }
+
+    png_set_IHDR(png, info, width, height, bpc, png_color_type, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+
+    white.gray = (1 << bpc) - 1;
+    white.red = white.blue = white.green = white.gray;
+    png_set_bKGD(png, info, &white);
+
+    /* We have to call png_write_info() before setting up the write
+     * transformation, since it stores data internally in 'png'
+     * that is needed for the write transformation functions to work.
+     */
+    png_write_info(png, info);
+    if (png_color_type == PNG_COLOR_TYPE_RGB_ALPHA) {
+        png_set_write_user_transform_fn(png, canvas_unpremultiply_data);
+    } else if (png_color_type == PNG_COLOR_TYPE_RGB) {
+        png_set_write_user_transform_fn(png, canvas_convert_data_to_bytes);
+        png_set_filler(png, 0, PNG_FILLER_AFTER);
+    }
+
+    png_write_image(png, rows);
+    png_write_end(png, info);
+
+    png_destroy_write_struct(&png, &info);
+    free(rows);
+    return status;
+}
+
+static void canvas_stream_write_func(png_structp png, png_bytep data, png_size_t size) {
+    cairo_status_t status;
+    struct canvas_png_write_closure_t *png_closure;
+
+    png_closure = (struct canvas_png_write_closure_t *) png_get_io_ptr(png);
+    status = png_closure->write_func(png_closure->closure, data, size);
+    if (unlikely(status)) {
+        cairo_status_t *error = (cairo_status_t *) png_get_error_ptr(png);
+        if (*error == CAIRO_STATUS_SUCCESS) {
+            *error = status;
+        }
+        png_error(png, NULL);
+    }
+}
+
+static cairo_status_t canvas_write_to_png_stream(cairo_surface_t *surface, cairo_write_func_t write_func, void *closure) {
+    struct canvas_png_write_closure_t png_closure;
+
+    if (cairo_surface_status(surface)) {
+        return cairo_surface_status(surface);
+    }
+
+    png_closure.write_func = write_func;
+    png_closure.closure = closure;
+
+    return canvas_write_png(surface, canvas_stream_write_func, &png_closure);
+}
+#endif

hm_sunwell/node_modules/canvas/src/Point.h

@@ -0,0 +1,19 @@
+
+
+//
+// Point.h
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __NODE_POINT_H__
+#define __NODE_POINT_H__
+
+template <class T>
+class Point {
+  public:
+    T x, y;
+    Point(T x, T y): x(x), y(y) {}
+};
+
+#endif /* __NODE_POINT_H__ */

hm_sunwell/node_modules/canvas/src/closure.h

@@ -0,0 +1,65 @@
+
+//
+// closure.h
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __NODE_CLOSURE_H__
+#define __NODE_CLOSURE_H__
+
+#ifdef __unix__
+  #include<sys/user.h>
+#endif
+
+#ifndef PAGE_SIZE
+  #define PAGE_SIZE 4096
+#endif
+
+#include <nan.h>
+
+/*
+ * PNG stream closure.
+ */
+
+typedef struct {
+  Nan::Callback *pfn;
+  Local<Function> fn;
+  unsigned len;
+  unsigned max_len;
+  uint8_t *data;
+  Canvas *canvas;
+  cairo_status_t status;
+  uint32_t compression_level;
+  uint32_t filter;
+} closure_t;
+
+/*
+ * Initialize the given closure.
+ */
+
+cairo_status_t
+closure_init(closure_t *closure, Canvas *canvas, unsigned int compression_level, unsigned int filter) {
+  closure->len = 0;
+  closure->canvas = canvas;
+  closure->data = (uint8_t *) malloc(closure->max_len = PAGE_SIZE);
+  if (!closure->data) return CAIRO_STATUS_NO_MEMORY;
+  closure->compression_level = compression_level;
+  closure->filter = filter;
+  return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Free the given closure's data,
+ * and hint V8 at the memory dealloc.
+ */
+
+void
+closure_destroy(closure_t *closure) {
+  if (closure->len) {
+    free(closure->data);
+    Nan::AdjustExternalMemory(-((intptr_t) closure->max_len));
+  }
+}
+
+#endif /* __NODE_CLOSURE_H__ */

hm_sunwell/node_modules/canvas/src/color.cc

@@ -0,0 +1,744 @@
+
+//
+// color.cc
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#include "color.h"
+#include <stdlib.h>
+#include <cmath>
+#include <limits>
+
+// Compatibility with Visual Studio versions prior to VS2015
+#if defined(_MSC_VER) && _MSC_VER < 1900
+#define snprintf _snprintf
+#endif
+
+/*
+ * Parse integer value
+ */
+
+template <typename parsed_t>
+static bool
+parse_integer(const char** pStr, parsed_t *pParsed) {
+  parsed_t& c = *pParsed;
+  const char*& str = *pStr;
+  int8_t sign=1;
+
+  c = 0;
+  if (*str == '-') {
+    sign=-1;
+    ++str;
+  }
+  else if (*str == '+')
+    ++str;
+
+  if (*str >= '0' && *str <= '9') {
+     do {
+       c *= 10;
+       c += *str++ - '0';
+     } while (*str >= '0' && *str <= '9');
+   } else {
+     return false;
+   }
+   if (sign<0)
+    c=-c;
+   return true;
+}
+
+
+/*
+ * Parse CSS <number> value
+ * Adapted from http://crackprogramming.blogspot.co.il/2012/10/implement-atof.html
+ */
+
+template <typename parsed_t>
+static bool
+parse_css_number(const char** pStr, parsed_t *pParsed) {
+   parsed_t &parsed = *pParsed;
+   const char*& str = *pStr;
+   const char* startStr = str;
+   if (!str || !*str)
+       return false; 
+   parsed_t integerPart = 0;
+   parsed_t fractionPart = 0;
+   int divisorForFraction = 1;
+   int sign = 1;
+   int exponent = 0;
+   int digits = 0;
+   bool inFraction = false;
+  
+   if (*str == '-') {
+       ++str;
+       sign = -1;
+   }
+   else if (*str == '+')
+       ++str;
+   while (*str != '\0') {
+       if (*str >= '0' && *str <= '9') {
+          if (digits>=std::numeric_limits<parsed_t>::digits10) {
+            if (!inFraction)
+              return false;
+          }
+          else {
+            ++digits;
+          
+            if (inFraction) {
+                fractionPart = fractionPart*10 + (*str - '0');
+                divisorForFraction *= 10;
+            }
+            else {
+                integerPart = integerPart*10 + (*str - '0');
+            }
+          }
+       }
+       else if (*str == '.') {
+           if (inFraction)
+               break;
+           else
+               inFraction = true;
+       }
+       else if (*str == 'e') {
+          ++str;
+          if (!parse_integer(&str, &exponent))
+            return false;
+          break;
+       }
+       else
+          break;
+       ++str;
+   }
+   if (str != startStr) {
+      parsed = sign * (integerPart + fractionPart/divisorForFraction);
+      for (;exponent>0;--exponent)
+        parsed *= 10;
+      for (;exponent<0;++exponent)
+        parsed /= 10;
+      return true;
+   }
+   return false;
+}
+
+/*
+ * Clip value to the range [minValue, maxValue]
+ */
+
+template <typename T>
+static T
+clip(T value, T minValue, T maxValue) {
+  if (value > maxValue)
+      value = maxValue;
+  if (value < minValue)
+      value = minValue;
+  return value;
+}
+
+/*
+ * Wrap value to the range [0, limit]
+ */
+ 
+template <typename T>
+static T
+wrap_float(T value, T limit) {
+  return fmod(fmod(value, limit) + limit, limit);
+}
+
+/*
+ * Wrap value to the range [0, limit] - currently-unused integer version of wrap_float
+ */
+
+// template <typename T>
+// static T wrap_int(T value, T limit) {
+//   return (value % limit + limit) % limit;
+// }
+
+/*
+ * Parse color channel value
+ */
+
+static bool
+parse_rgb_channel(const char** pStr, uint8_t *pChannel) {
+  int channel;
+  if (parse_integer(pStr, &channel)) {
+    *pChannel = clip(channel, 0, 255);
+    return true;
+  }
+  return false;
+}
+
+/*
+ * Parse a value in degrees
+ */
+
+static bool
+parse_degrees(const char** pStr, float *pDegrees) {
+  float degrees;
+  if (parse_css_number(pStr, &degrees)) {
+    *pDegrees = wrap_float(degrees, 360.0f);
+    return true;
+  }
+  return false;
+}
+
+/*
+ * Parse and clip a percentage value. Returns a float in the range [0, 1].
+ */
+
+static bool
+parse_clipped_percentage(const char** pStr, float *pFraction) { 
+  float percentage;
+  bool result = parse_css_number(pStr,&percentage);
+  const char*& str = *pStr;
+  if (result) {
+    if (*str == '%') {
+      ++str;
+      *pFraction = clip(percentage, 0.0f, 100.0f) / 100.0f;
+      return result;
+    }
+  }
+  return false;
+}
+
+/*
+ * Macros to help with parsing inside rgba_from_*_string
+ */
+
+#define WHITESPACE \
+  while (' ' == *str) ++str;
+
+#define WHITESPACE_OR_COMMA \
+  while (' ' == *str || ',' == *str) ++str;
+
+#define CHANNEL(NAME) \
+   if (!parse_rgb_channel(&str, &NAME)) \
+    return 0; \
+
+#define HUE(NAME) \
+   if (!parse_degrees(&str, &NAME)) \
+    return 0;
+
+#define SATURATION(NAME) \
+   if (!parse_clipped_percentage(&str, &NAME)) \
+    return 0;
+
+#define LIGHTNESS(NAME) SATURATION(NAME)
+
+#define ALPHA(NAME) \
+  if (*str >= '1' && *str <= '9') { \
+      NAME = 1; \
+    } else { \
+      if ('0' == *str) ++str; \
+      if ('.' == *str) { \
+        ++str; \
+        float n = .1f; \
+        while (*str >= '0' && *str <= '9') { \
+          NAME += (*str++ - '0') * n; \
+          n *= .1f; \
+        } \
+      } \
+    } \
+    do {} while (0) // require trailing semicolon
+
+/*
+ * Named colors.
+ */
+
+static struct named_color {
+  const char *name;
+  uint32_t val;
+} named_colors[] = {
+    { "transparent", 0xFFFFFF00}
+  , { "aliceblue", 0xF0F8FFFF }
+  , { "antiquewhite", 0xFAEBD7FF }
+  , { "aqua", 0x00FFFFFF }
+  , { "aquamarine", 0x7FFFD4FF }
+  , { "azure", 0xF0FFFFFF }
+  , { "beige", 0xF5F5DCFF }
+  , { "bisque", 0xFFE4C4FF }
+  , { "black", 0x000000FF }
+  , { "blanchedalmond", 0xFFEBCDFF }
+  , { "blue", 0x0000FFFF }
+  , { "blueviolet", 0x8A2BE2FF }
+  , { "brown", 0xA52A2AFF }
+  , { "burlywood", 0xDEB887FF }
+  , { "cadetblue", 0x5F9EA0FF }
+  , { "chartreuse", 0x7FFF00FF }
+  , { "chocolate", 0xD2691EFF }
+  , { "coral", 0xFF7F50FF }
+  , { "cornflowerblue", 0x6495EDFF }
+  , { "cornsilk", 0xFFF8DCFF }
+  , { "crimson", 0xDC143CFF }
+  , { "cyan", 0x00FFFFFF }
+  , { "darkblue", 0x00008BFF }
+  , { "darkcyan", 0x008B8BFF }
+  , { "darkgoldenrod", 0xB8860BFF }
+  , { "darkgray", 0xA9A9A9FF }
+  , { "darkgreen", 0x006400FF }
+  , { "darkgrey", 0xA9A9A9FF }
+  , { "darkkhaki", 0xBDB76BFF }
+  , { "darkmagenta", 0x8B008BFF }
+  , { "darkolivegreen", 0x556B2FFF }
+  , { "darkorange", 0xFF8C00FF }
+  , { "darkorchid", 0x9932CCFF }
+  , { "darkred", 0x8B0000FF }
+  , { "darksalmon", 0xE9967AFF }
+  , { "darkseagreen", 0x8FBC8FFF }
+  , { "darkslateblue", 0x483D8BFF }
+  , { "darkslategray", 0x2F4F4FFF }
+  , { "darkslategrey", 0x2F4F4FFF }
+  , { "darkturquoise", 0x00CED1FF }
+  , { "darkviolet", 0x9400D3FF }
+  , { "deeppink", 0xFF1493FF }
+  , { "deepskyblue", 0x00BFFFFF }
+  , { "dimgray", 0x696969FF }
+  , { "dimgrey", 0x696969FF }
+  , { "dodgerblue", 0x1E90FFFF }
+  , { "firebrick", 0xB22222FF }
+  , { "floralwhite", 0xFFFAF0FF }
+  , { "forestgreen", 0x228B22FF }
+  , { "fuchsia", 0xFF00FFFF }
+  , { "gainsboro", 0xDCDCDCFF }
+  , { "ghostwhite", 0xF8F8FFFF }
+  , { "gold", 0xFFD700FF }
+  , { "goldenrod", 0xDAA520FF }
+  , { "gray", 0x808080FF }
+  , { "green", 0x008000FF }
+  , { "greenyellow", 0xADFF2FFF }
+  , { "grey", 0x808080FF }
+  , { "honeydew", 0xF0FFF0FF }
+  , { "hotpink", 0xFF69B4FF }
+  , { "indianred", 0xCD5C5CFF }
+  , { "indigo", 0x4B0082FF }
+  , { "ivory", 0xFFFFF0FF }
+  , { "khaki", 0xF0E68CFF }
+  , { "lavender", 0xE6E6FAFF }
+  , { "lavenderblush", 0xFFF0F5FF }
+  , { "lawngreen", 0x7CFC00FF }
+  , { "lemonchiffon", 0xFFFACDFF }
+  , { "lightblue", 0xADD8E6FF }
+  , { "lightcoral", 0xF08080FF }
+  , { "lightcyan", 0xE0FFFFFF }
+  , { "lightgoldenrodyellow", 0xFAFAD2FF }
+  , { "lightgray", 0xD3D3D3FF }
+  , { "lightgreen", 0x90EE90FF }
+  , { "lightgrey", 0xD3D3D3FF }
+  , { "lightpink", 0xFFB6C1FF }
+  , { "lightsalmon", 0xFFA07AFF }
+  , { "lightseagreen", 0x20B2AAFF }
+  , { "lightskyblue", 0x87CEFAFF }
+  , { "lightslategray", 0x778899FF }
+  , { "lightslategrey", 0x778899FF }
+  , { "lightsteelblue", 0xB0C4DEFF }
+  , { "lightyellow", 0xFFFFE0FF }
+  , { "lime", 0x00FF00FF }
+  , { "limegreen", 0x32CD32FF }
+  , { "linen", 0xFAF0E6FF }
+  , { "magenta", 0xFF00FFFF }
+  , { "maroon", 0x800000FF }
+  , { "mediumaquamarine", 0x66CDAAFF }
+  , { "mediumblue", 0x0000CDFF }
+  , { "mediumorchid", 0xBA55D3FF }
+  , { "mediumpurple", 0x9370DBFF }
+  , { "mediumseagreen", 0x3CB371FF }
+  , { "mediumslateblue", 0x7B68EEFF }
+  , { "mediumspringgreen", 0x00FA9AFF }
+  , { "mediumturquoise", 0x48D1CCFF }
+  , { "mediumvioletred", 0xC71585FF }
+  , { "midnightblue", 0x191970FF }
+  , { "mintcream", 0xF5FFFAFF }
+  , { "mistyrose", 0xFFE4E1FF }
+  , { "moccasin", 0xFFE4B5FF }
+  , { "navajowhite", 0xFFDEADFF }
+  , { "navy", 0x000080FF }
+  , { "oldlace", 0xFDF5E6FF }
+  , { "olive", 0x808000FF }
+  , { "olivedrab", 0x6B8E23FF }
+  , { "orange", 0xFFA500FF }
+  , { "orangered", 0xFF4500FF }
+  , { "orchid", 0xDA70D6FF }
+  , { "palegoldenrod", 0xEEE8AAFF }
+  , { "palegreen", 0x98FB98FF }
+  , { "paleturquoise", 0xAFEEEEFF }
+  , { "palevioletred", 0xDB7093FF }
+  , { "papayawhip", 0xFFEFD5FF }
+  , { "peachpuff", 0xFFDAB9FF }
+  , { "peru", 0xCD853FFF }
+  , { "pink", 0xFFC0CBFF }
+  , { "plum", 0xDDA0DDFF }
+  , { "powderblue", 0xB0E0E6FF }
+  , { "purple", 0x800080FF }
+  , { "rebeccapurple", 0x663399FF } // Source: CSS Color Level 4 draft
+  , { "red", 0xFF0000FF }
+  , { "rosybrown", 0xBC8F8FFF }
+  , { "royalblue", 0x4169E1FF }
+  , { "saddlebrown", 0x8B4513FF }
+  , { "salmon", 0xFA8072FF }
+  , { "sandybrown", 0xF4A460FF }
+  , { "seagreen", 0x2E8B57FF }
+  , { "seashell", 0xFFF5EEFF }
+  , { "sienna", 0xA0522DFF }
+  , { "silver", 0xC0C0C0FF }
+  , { "skyblue", 0x87CEEBFF }
+  , { "slateblue", 0x6A5ACDFF }
+  , { "slategray", 0x708090FF }
+  , { "slategrey", 0x708090FF }
+  , { "snow", 0xFFFAFAFF }
+  , { "springgreen", 0x00FF7FFF }
+  , { "steelblue", 0x4682B4FF }
+  , { "tan", 0xD2B48CFF }
+  , { "teal", 0x008080FF }
+  , { "thistle", 0xD8BFD8FF }
+  , { "tomato", 0xFF6347FF }
+  , { "turquoise", 0x40E0D0FF }
+  , { "violet", 0xEE82EEFF }
+  , { "wheat", 0xF5DEB3FF }
+  , { "white", 0xFFFFFFFF }
+  , { "whitesmoke", 0xF5F5F5FF }
+  , { "yellow", 0xFFFF00FF }
+  , { "yellowgreen", 0x9ACD32FF }
+  , { NULL, 0 }
+};
+
+/*
+ * Hex digit int val.
+ */
+
+static int
+h(char c) {
+  switch (c) {
+    case '0':
+    case '1':
+    case '2':
+    case '3':
+    case '4':
+    case '5':
+    case '6':
+    case '7':
+    case '8':
+    case '9':
+      return c - '0';
+    case 'a':
+    case 'b':
+    case 'c':
+    case 'd':
+    case 'e':
+    case 'f':
+      return (c - 'a') + 10;
+    case 'A':
+    case 'B':
+    case 'C':
+    case 'D':
+    case 'E':
+    case 'F':
+      return (c - 'A') + 10;
+  }
+  return 0;
+}
+
+/*
+ * Return rgba_t from rgba.
+ */
+
+rgba_t
+rgba_create(uint32_t rgba) {
+  rgba_t color;
+  color.r = (double) (rgba >> 24) / 255;
+  color.g = (double) (rgba >> 16 & 0xff) / 255;
+  color.b = (double) (rgba >> 8 & 0xff) / 255;
+  color.a = (double) (rgba & 0xff) / 255;
+  return color;
+}
+
+/*
+ * Return a string representation of the color.
+ */
+
+void
+rgba_to_string(rgba_t rgba, char *buf, size_t len) {
+  if (1 == rgba.a) {
+    snprintf(buf, len, "#%.2x%.2x%.2x"
+      , (int) (rgba.r * 255)
+      , (int) (rgba.g * 255)
+      , (int) (rgba.b * 255));
+  } else {
+    snprintf(buf, len, "rgba(%d, %d, %d, %.2f)"
+      , (int) (rgba.r * 255)
+      , (int) (rgba.g * 255)
+      , (int) (rgba.b * 255)
+      , rgba.a);
+  }
+}
+
+/*
+ * Return rgba from (r,g,b,a).
+ */
+
+static inline int32_t
+rgba_from_rgba(uint8_t r, uint8_t g, uint8_t b, uint8_t a) {
+  return
+      r << 24
+    | g << 16
+    | b << 8
+    | a;
+}
+
+/*
+ * Helper function used in rgba_from_hsla().
+ * Based on http://dev.w3.org/csswg/css-color-4/#hsl-to-rgb
+ */
+
+static float
+hue_to_rgb(float t1, float t2, float hue) {
+  if (hue < 0)
+    hue += 6;
+  if (hue >= 6)
+    hue -= 6;
+
+  if (hue < 1)
+    return (t2 - t1) * hue + t1;
+  else if (hue < 3)
+    return t2;
+  else if (hue < 4)
+    return (t2 - t1) * (4 - hue) + t1;
+  else
+    return t1;
+}
+
+/*
+ * Return rgba from (h,s,l,a).
+ * Expects h values in the range [0, 360), and s, l, a in the range [0, 1].
+ * Adapted from http://dev.w3.org/csswg/css-color-4/#hsl-to-rgb
+ */
+
+static inline int32_t
+rgba_from_hsla(float h_deg, float s, float l, float a) {
+  uint8_t r, g, b;
+  float h = (6 * h_deg) / 360.0f, m1, m2;
+
+  if (l<=0.5)
+    m2=l*(s+1);
+  else
+    m2=l+s-l*s;
+  m1 = l*2 - m2;
+
+  // Scale and round the RGB components
+  r = (uint8_t)floor(hue_to_rgb(m1, m2, h + 2) * 255 + 0.5);
+  g = (uint8_t)floor(hue_to_rgb(m1, m2, h    ) * 255 + 0.5);
+  b = (uint8_t)floor(hue_to_rgb(m1, m2, h - 2) * 255 + 0.5);
+
+  return rgba_from_rgba(r, g, b, (uint8_t) (a * 255));
+}
+
+/*
+ * Return rgba from (h,s,l).
+ * Expects h values in the range [0, 360), and s, l in the range [0, 1].
+ */
+
+static inline int32_t
+rgba_from_hsl(float h_deg, float s, float l) {
+  return rgba_from_hsla(h_deg, s, l, 1.0);
+}
+
+
+/*
+ * Return rgba from (r,g,b).
+ */
+
+static int32_t
+rgba_from_rgb(uint8_t r, uint8_t g, uint8_t b) {
+  return rgba_from_rgba(r, g, b, 255);
+}
+
+/*
+ * Return rgb from "#RRGGBB".
+ */
+
+static int32_t
+rgba_from_hex6_string(const char *str) {
+  return rgba_from_rgb(
+      (h(str[0]) << 4) + h(str[1])
+    , (h(str[2]) << 4) + h(str[3])
+    , (h(str[4]) << 4) + h(str[5])
+    );
+}
+
+/*
+ * Return rgb from "#RGB"
+ */
+
+static int32_t
+rgba_from_hex3_string(const char *str) {
+  return rgba_from_rgb(
+      (h(str[0]) << 4) + h(str[0])
+    , (h(str[1]) << 4) + h(str[1])
+    , (h(str[2]) << 4) + h(str[2])
+    );
+}
+
+/*
+ * Return rgb from "rgb()"
+ */
+
+static int32_t
+rgba_from_rgb_string(const char *str, short *ok) {
+  if (str == strstr(str, "rgb(")) {
+    str += 4;
+    WHITESPACE;
+    uint8_t r = 0, g = 0, b = 0;
+    CHANNEL(r);
+    WHITESPACE_OR_COMMA;
+    CHANNEL(g);
+    WHITESPACE_OR_COMMA;
+    CHANNEL(b);
+    WHITESPACE;
+    return *ok = 1, rgba_from_rgb(r, g, b);
+  }
+  return *ok = 0;
+}
+
+/*
+ * Return rgb from "rgba()"
+ */
+
+static int32_t
+rgba_from_rgba_string(const char *str, short *ok) {
+  if (str == strstr(str, "rgba(")) {
+    str += 5;
+    WHITESPACE;
+    uint8_t r = 0, g = 0, b = 0;
+    float a = 0;
+    CHANNEL(r);
+    WHITESPACE_OR_COMMA;
+    CHANNEL(g);
+    WHITESPACE_OR_COMMA;
+    CHANNEL(b);
+    WHITESPACE_OR_COMMA;
+    ALPHA(a);
+    WHITESPACE;
+    return *ok = 1, rgba_from_rgba(r, g, b, (int) (a * 255));
+  }
+  return *ok = 0;
+}
+
+/*
+ * Return rgb from "hsla()"
+ */
+
+static int32_t
+rgba_from_hsla_string(const char *str, short *ok) {
+  if (str == strstr(str, "hsla(")) {
+    str += 5;
+    WHITESPACE;
+    float h_deg = 0;
+    float s = 0, l = 0;
+    float a = 0;
+    HUE(h_deg);
+    WHITESPACE_OR_COMMA;
+    SATURATION(s);
+    WHITESPACE_OR_COMMA;
+    LIGHTNESS(l);
+    WHITESPACE_OR_COMMA;
+    ALPHA(a);
+    WHITESPACE;
+    return *ok = 1, rgba_from_hsla(h_deg, s, l, a);
+  }
+  return *ok = 0;
+}
+
+/*
+ * Return rgb from "hsl()"
+ */
+
+static int32_t
+rgba_from_hsl_string(const char *str, short *ok) {
+  if (str == strstr(str, "hsl(")) {
+    str += 4;
+    WHITESPACE;
+    float h_deg = 0;
+    float s = 0, l = 0;
+    HUE(h_deg);
+    WHITESPACE_OR_COMMA;
+    SATURATION(s);
+    WHITESPACE_OR_COMMA;
+    LIGHTNESS(l);
+    WHITESPACE;
+    return *ok = 1, rgba_from_hsl(h_deg, s, l);
+  }
+  return *ok = 0;
+}
+
+
+/*
+ * Return rgb from:
+ *  
+ *  - "#RGB"
+ *  - "#RRGGBB"
+ *
+ */
+
+static int32_t
+rgba_from_hex_string(const char *str, short *ok) {
+  size_t len = strlen(str);
+  *ok = 1;
+  if (6 == len) return rgba_from_hex6_string(str);
+  if (3 == len) return rgba_from_hex3_string(str);
+  return *ok = 0;
+}
+
+/*
+ * Return named color value.
+ */
+
+static int32_t
+rgba_from_name_string(const char *str, short *ok) {
+  int i = 0;
+  struct named_color color;
+  while ((color = named_colors[i++]).name) {
+    if (*str == *color.name && 0 == strcmp(str, color.name))
+      return *ok = 1, color.val;
+  }
+  return *ok = 0;
+}
+
+/*
+ * Return rgb from:
+ *  
+ *  - #RGB
+ *  - #RRGGBB
+ *  - rgb(r,g,b)
+ *  - rgba(r,g,b,a)
+ *  - hsl(h,s,l)
+ *  - hsla(h,s,l,a)
+ *  - name
+ *
+ */
+
+int32_t
+rgba_from_string(const char *str, short *ok) {
+  if ('#' == str[0]) 
+    return rgba_from_hex_string(++str, ok);
+  if (str == strstr(str, "rgba"))
+    return rgba_from_rgba_string(str, ok);
+  if (str == strstr(str, "rgb"))
+    return rgba_from_rgb_string(str, ok);
+  if (str == strstr(str, "hsla"))
+    return rgba_from_hsla_string(str, ok);
+  if (str == strstr(str, "hsl"))
+    return rgba_from_hsl_string(str, ok);
+  return rgba_from_name_string(str, ok);
+}
+
+/*
+ * Inspect the given rgba color.
+ */
+
+void
+rgba_inspect(int32_t rgba) {
+  printf("rgba(%d,%d,%d,%d)\n"
+    , rgba >> 24 & 0xff
+    , rgba >> 16 & 0xff
+    , rgba >> 8 & 0xff
+    , rgba & 0xff
+    );
+}

hm_sunwell/node_modules/canvas/src/color.h

@@ -0,0 +1,40 @@
+
+//
+// color.h
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __COLOR_PARSER_H__
+#define __COLOR_PARSER_H__
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stddef.h>
+
+/*
+ * RGBA struct.
+ */
+
+typedef struct {
+  double r, g, b, a;
+} rgba_t;
+
+/*
+ * Prototypes.
+ */
+
+rgba_t
+rgba_create(uint32_t rgba);
+
+int32_t
+rgba_from_string(const char *str, short *ok);
+
+void
+rgba_to_string(rgba_t rgba, char *buf, size_t len);
+
+void
+rgba_inspect(int32_t rgba);
+
+#endif /* __COLOR_PARSER_H__ */

hm_sunwell/node_modules/canvas/src/init.cc

@@ -0,0 +1,82 @@
+
+//
+// init.cc
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#include <stdio.h>
+#include "Canvas.h"
+#include "Image.h"
+#include "ImageData.h"
+#include "CanvasGradient.h"
+#include "CanvasPattern.h"
+#include "CanvasRenderingContext2d.h"
+
+#ifdef HAVE_FREETYPE
+#include "FontFace.h"
+#include FT_FREETYPE_H
+#endif
+
+// Compatibility with Visual Studio versions prior to VS2015
+#if defined(_MSC_VER) && _MSC_VER < 1900
+#define snprintf _snprintf
+#endif
+
+NAN_MODULE_INIT(init) {
+  Canvas::Initialize(target);
+  Image::Initialize(target);
+  ImageData::Initialize(target);
+  Context2d::Initialize(target);
+  Gradient::Initialize(target);
+  Pattern::Initialize(target);
+#ifdef HAVE_FREETYPE
+  FontFace::Initialize(target);
+#endif
+
+  target->Set(Nan::New<String>("cairoVersion").ToLocalChecked(), Nan::New<String>(cairo_version_string()).ToLocalChecked());
+#ifdef HAVE_JPEG
+
+#ifndef JPEG_LIB_VERSION_MAJOR
+#ifdef JPEG_LIB_VERSION
+#define JPEG_LIB_VERSION_MAJOR (JPEG_LIB_VERSION / 10)
+#else
+#define JPEG_LIB_VERSION_MAJOR 0
+#endif
+#endif
+
+#ifndef JPEG_LIB_VERSION_MINOR
+#ifdef JPEG_LIB_VERSION
+#define JPEG_LIB_VERSION_MINOR (JPEG_LIB_VERSION % 10)
+#else
+#define JPEG_LIB_VERSION_MINOR 0
+#endif
+#endif
+
+  char jpeg_version[10];
+  if (JPEG_LIB_VERSION_MINOR > 0) {
+    snprintf(jpeg_version, 10, "%d%c", JPEG_LIB_VERSION_MAJOR, JPEG_LIB_VERSION_MINOR + 'a' - 1);
+  } else {
+    snprintf(jpeg_version, 10, "%d", JPEG_LIB_VERSION_MAJOR);
+  }
+  target->Set(Nan::New<String>("jpegVersion").ToLocalChecked(), Nan::New<String>(jpeg_version).ToLocalChecked());
+#endif
+
+#ifdef HAVE_GIF
+#ifndef GIF_LIB_VERSION
+  char gif_version[10];
+  snprintf(gif_version, 10, "%d.%d.%d", GIFLIB_MAJOR, GIFLIB_MINOR, GIFLIB_RELEASE);
+  target->Set(Nan::New<String>("gifVersion").ToLocalChecked(), Nan::New<String>(gif_version).ToLocalChecked());
+#else
+  target->Set(Nan::New<String>("gifVersion").ToLocalChecked(), Nan::New<String>(GIF_LIB_VERSION).ToLocalChecked());
+#endif
+#endif
+
+#ifdef HAVE_FREETYPE
+  char freetype_version[10];
+  snprintf(freetype_version, 10, "%d.%d.%d", FREETYPE_MAJOR, FREETYPE_MINOR, FREETYPE_PATCH);
+  target->Set(Nan::New<String>("freetypeVersion").ToLocalChecked(), Nan::New<String>(freetype_version).ToLocalChecked());
+#endif
+}
+
+NODE_MODULE(canvas,init);