From a37b6eac6a8018c04ea0a039d3a04e5cdf3a6299 Mon Sep 17 00:00:00 2001
From: Tj Holowaychuk <tj@vision-media.ca>
Date: Wed, 29 Sep 2010 15:11:33 -0700
Subject: [PATCH] Added rotate() / translate()

---
 src/context2d.cc | 40 ++++++++++++++++++++++++++++++++++++++++
 src/context2d.h  |  2 ++
 2 files changed, 42 insertions(+)

diff --git a/src/context2d.cc b/src/context2d.cc
index 02f7f59..dac61b2 100644
--- a/src/context2d.cc
+++ b/src/context2d.cc
@@ -86,6 +86,8 @@ Context2d::Initialize(Handle<Object> target) {
   Local<ObjectTemplate> proto = t->PrototypeTemplate();
   NODE_SET_PROTOTYPE_METHOD(t, "save", Save);
   NODE_SET_PROTOTYPE_METHOD(t, "restore", Restore);
+  NODE_SET_PROTOTYPE_METHOD(t, "rotate", Rotate);
+  NODE_SET_PROTOTYPE_METHOD(t, "translate", Translate);
   NODE_SET_PROTOTYPE_METHOD(t, "fill", Fill);
   NODE_SET_PROTOTYPE_METHOD(t, "stroke", Stroke);
   NODE_SET_PROTOTYPE_METHOD(t, "fillRect", FillRect);
@@ -356,6 +358,44 @@ Context2d::ClosePath(const Arguments &args) {
   return Undefined();
 }
 
+/*
+ * Rotate transformation.
+ */
+
+Handle<Value>
+Context2d::Rotate(const Arguments &args) {
+  HandleScope scope;
+
+  if (!args[0]->IsNumber()) 
+    return ThrowException(Exception::TypeError(String::New("angle required")));
+
+  Context2d *context = ObjectWrap::Unwrap<Context2d>(args.This());
+  cairo_rotate(context->getContext(), args[0]->NumberValue());
+
+  return Undefined();
+}
+
+/*
+ * Translate transformation.
+ */
+
+Handle<Value>
+Context2d::Translate(const Arguments &args) {
+  HandleScope scope;
+
+  if (!args[0]->IsNumber()) 
+    return ThrowException(Exception::TypeError(String::New("tx required")));
+  if (!args[1]->IsNumber()) 
+    return ThrowException(Exception::TypeError(String::New("ty required")));
+
+  Context2d *context = ObjectWrap::Unwrap<Context2d>(args.This());
+  cairo_translate(context->getContext()
+    , args[0]->NumberValue()
+    , args[1]->NumberValue());
+
+  return Undefined();
+}
+
 /*
  * Fill the shape.
  */
diff --git a/src/context2d.h b/src/context2d.h
index 65aa269..fed4688 100644
--- a/src/context2d.h
+++ b/src/context2d.h
@@ -23,6 +23,8 @@ class Context2d: public node::ObjectWrap {
     static Handle<Value> New(const Arguments &args);
     static Handle<Value> Save(const Arguments &args);
     static Handle<Value> Restore(const Arguments &args);
+    static Handle<Value> Rotate(const Arguments &args);
+    static Handle<Value> Translate(const Arguments &args);
     static Handle<Value> BeginPath(const Arguments &args);
     static Handle<Value> ClosePath(const Arguments &args);
     static Handle<Value> Fill(const Arguments &args);