Added getNaturalSize, getWidthForHeight, getHeightForWidth JS API's

[platform/core/uifw/dali-toolkit.git] / plugins / dali-script-v8 / src / actors / actor-api.cpp

diff --git a/plugins/dali-script-v8/src/actors/actor-api.cpp b/plugins/dali-script-v8/src/actors/actor-api.cpp
index b36f68a..f712893 100644 (file)
--- a/plugins/dali-script-v8/src/actors/actor-api.cpp
+++ b/plugins/dali-script-v8/src/actors/actor-api.cpp
@@ -499,6 +499,93 @@ void ActorApi::GetActorType( const v8::FunctionCallbackInfo<v8::Value>& args )
   args.GetReturnValue().Set( v8String );
 }
 /**
+ * Return the natural size of the actor.
+ *
+ * @for Actor
+ * @method getNaturalSize
+ * @return {Object} { x, y, z }
+ */
+void ActorApi::GetNaturalSize( const v8::FunctionCallbackInfo<v8::Value>& args )
+{
+  v8::Isolate* isolate = args.GetIsolate();
+  v8::HandleScope handleScope( isolate );
+  Actor actor = GetActor( isolate, args );
+
+  Vector3 size( actor.GetNaturalSize() );
+
+  v8::Local<v8::Object> sizeObject = v8::Object::New( isolate );
+
+  sizeObject->Set( v8::String::NewFromUtf8( isolate, "x" ), v8::Integer::New( isolate, size.width ) );
+  sizeObject->Set( v8::String::NewFromUtf8( isolate, "y" ), v8::Integer::New( isolate, size.height ) );
+  sizeObject->Set( v8::String::NewFromUtf8( isolate, "z" ), v8::Integer::New( isolate, size.depth ) );
+
+  args.GetReturnValue().Set( sizeObject );
+}
+
+/**
+ *  Calculate the width of the actor given a height
+ *
+ * The natural size is used for default calculation.
+ * size 0 is treated as aspect ratio 1:1.
+ * @for Actor
+ * @method getWidthForHeight
+ * @param {Float} height to use
+ * @return {Float} Return the width based on the height
+ * @example
+ *   myTextLabel.getWidthForHeight(40);
+ *
+ * // DALi uses this formula internally
+ * // width = naturalSize.width * height / naturalSize.height;
+ *
+ *
+ */
+void ActorApi::GetWidthForHeight( const v8::FunctionCallbackInfo<v8::Value>& args )
+{
+  v8::Isolate* isolate = args.GetIsolate();
+  v8::HandleScope handleScope( isolate );
+  Actor actor = GetActor( isolate, args );
+
+  bool found;
+  float height = V8Utils::GetFloatParameter( PARAMETER_0, found, isolate, args, 0.f );
+  if( !found )
+  {
+    DALI_SCRIPT_EXCEPTION( isolate, "missing height parameter");
+    return;
+  }
+  args.GetReturnValue().Set( v8::Number::New( isolate, actor.GetWidthForHeight( height ) ) );
+}
+
+/**
+ *  Calculate the height of the actor given a width
+ *
+ * The natural size is used for default calculation.
+ * size 0 is treated as aspect ratio 1:1.
+ * @for Actor
+ * @method getHeightForWidth
+ * @param {Float} width to use
+ * @return {Float} Return the height based on the width
+ * @example
+ *   myTextLabel.getHeightForWidth(250);
+ *
+ * // DALi uses this formula internally
+ * // height = naturalSize.height * width / naturalSize.width
+ */
+void ActorApi::GetHeightForWidth( const v8::FunctionCallbackInfo<v8::Value>& args )
+{
+  v8::Isolate* isolate = args.GetIsolate();
+  v8::HandleScope handleScope( isolate );
+  Actor actor = GetActor( isolate, args );
+
+  bool found;
+  float width = V8Utils::GetFloatParameter( PARAMETER_0, found, isolate, args, 0.f );
+  if( !found )
+  {
+    DALI_SCRIPT_EXCEPTION( isolate, "missing width parameter");
+    return;
+  }
+  args.GetReturnValue().Set( v8::Number::New( isolate, actor.GetHeightForWidth( width ) ) );
+}
+/**
  * Move an actor relative to its existing position.
  * @example
  *