From 8cf26690d358ff9d7d28866bc4fcef72450d2442 Mon Sep 17 00:00:00 2001
From: Tj Holowaychuk <tj@vision-media.ca>
Date: Thu, 30 Sep 2010 13:11:30 -0700
Subject: [PATCH] Started Gradient

---
 src/canvas.cc   |  2 +-
 src/canvas.h    |  2 --
 src/gradient.cc | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/gradient.h  | 28 ++++++++++++++++++++++++++++
 4 files changed, 77 insertions(+), 3 deletions(-)
 create mode 100644 src/gradient.cc
 create mode 100644 src/gradient.h

diff --git a/src/canvas.cc b/src/canvas.cc
index 9068a8e..ea7bd48 100644
--- a/src/canvas.cc
+++ b/src/canvas.cc
@@ -37,7 +37,7 @@ Canvas::New(const Arguments &args) {
   if (!args[1]->IsNumber()) 
     return ThrowException(Exception::TypeError(String::New("height required")));
 
-  Canvas *canvas = new Canvas(args[0]->Uint32Value(), args[1]->Uint32Value());
+  Canvas *canvas = new Canvas(args[0]->Int32Value(), args[1]->Int32Value());
   canvas->Wrap(args.This());
   return args.This();
 }
diff --git a/src/canvas.h b/src/canvas.h
index 57138c1..104080e 100644
--- a/src/canvas.h
+++ b/src/canvas.h
@@ -21,8 +21,6 @@ class Canvas: public node::ObjectWrap {
     static Handle<Value> New(const Arguments &args);
     static Handle<Value> SavePNG(const Arguments &args);
     inline cairo_surface_t *getSurface(){ return _surface; }
-
-  protected:
     Canvas(int width, int height);
 
   private:
diff --git a/src/gradient.cc b/src/gradient.cc
new file mode 100644
index 0000000..dfe1538
--- /dev/null
+++ b/src/gradient.cc
@@ -0,0 +1,48 @@
+
+//
+// gradient.cc
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#include "canvas.h"
+#include "gradient.h"
+
+void
+Gradient::Initialize(Handle<Object> target) {
+  HandleScope scope;
+  Local<FunctionTemplate> t = FunctionTemplate::New(Gradient::New);
+  t->InstanceTemplate()->SetInternalFieldCount(1);
+  t->SetClassName(String::NewSymbol("CanvasGradient"));
+
+  target->Set(String::NewSymbol("CanvasGradient"), t->GetFunction());
+}
+
+Handle<Value>
+Gradient::New(const Arguments &args) {
+  HandleScope scope;
+
+  // Linear
+  if (4 == args.Length()) {
+    Gradient *grad = new Gradient(
+        args[0]->NumberValue()
+      , args[1]->NumberValue()
+      , args[2]->NumberValue()
+      , args[3]->NumberValue());
+  }
+
+  // Radial
+  if (6 == args.Length()) {
+    Gradient *grad = new Gradient(
+        args[0]->NumberValue()
+      , args[1]->NumberValue()
+      , args[2]->NumberValue()
+      , args[3]->NumberValue()
+      , args[4]->NumberValue()
+      , args[5]->NumberValue());
+    grad->Wrap(args.This());
+    return args.This();
+  }
+  
+  return ThrowException(Exception::TypeError(String::New("invalid arguments")));
+}
\ No newline at end of file
diff --git a/src/gradient.h b/src/gradient.h
new file mode 100644
index 0000000..48a08a3
--- /dev/null
+++ b/src/gradient.h
@@ -0,0 +1,28 @@
+
+//
+// gradient.h
+//
+// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
+//
+
+#ifndef __NODE_GRADIENT_H__
+#define __NODE_GRADIENT_H__
+
+#include "canvas.h"
+
+using namespace v8;
+
+class Gradient: public node::ObjectWrap {
+  public:
+    static void Initialize(Handle<Object> target);
+    static Handle<Value> New(const Arguments &args);
+    Gradient(double x0, double y0, double x1, double y1):
+      _x0(x0), _y0(y0), _x1(x1), _y1(y1) {};
+    Gradient(double x0, double y0, double r0, double x1, double y1, double r1):
+      _x0(x0), _y0(y0), _x1(x1), _y1(y1), _r0(r0), _r1(r1) {};
+
+  private:
+    double _x0, _y0, _x1, _y1, _r0, _r1;
+};
+
+#endif
\ No newline at end of file