Made rating component size work a bit better.

Send an onFileChanged(FILE_METADATA_CHANGED) when a game is launched to catch stat changes.
Updated documentation.

THEMES.md

@@ -299,8 +299,8 @@ Reference
 Common to almost all elements is a `pos` and `size` property of the NORMALIZED_PAIR type.  They are normalized in terms of their "parent" object's size; 99% of the time, this is just the size of the screen.  In this case, `<pos>0 0</pos>` would correspond to the top left corner, and `<pos>1 1</pos>` the bottom right corner (a positive Y value points further down).  `pos` almost always refers to the top left corner of your element.  You *can* use numbers outside of the [0..1] range if you want to place an element partially or completely off-screen.
 
 The order you define properties in does not matter.
-
 Remember, you do *not* need to specify every property!
+*Note that a view may choose to only make only certain properties on a particular element themable!*
 
 #### image
 
@@ -308,10 +308,11 @@ Can be created as an extra.
 
 * `pos` - type: NORMALIZED_PAIR.
 * `size` - type: NORMALIZED_PAIR.
+	- If only one axis is specified (and the other is zero), the other will be automatically calculated in accordance with the image's aspect ratio.
 * `maxSize` - type: NORMALIZED_PAIR.
 	- The image will be resized as large as possible so that it fits within this size and maintains its aspect ratio.  Use this instead of `size` when you don't know what kind of image you're using so it doesn't get grossly oversized on one axis (e.g. with a game's image metadata).
 * `origin` - type: NORMALIZED_PAIR.
-	- Where on the image `pos` refers to.  For example, an origin of `0.5 0.5` and a `pos` of `0.5 0.5` would place the image exactly in the middle of the screen.
+	- Where on the image `pos` refers to.  For example, an origin of `0.5 0.5` and a `pos` of `0.5 0.5` would place the image exactly in the middle of the screen.  If the "POSITION" and "SIZE" attributes are themable, "ORIGIN" is implied.
 * `path` - type: PATH.
 	- Path to the image file.  Most common extensions are supported (including .jpg, .png, and unanimated .gif).
 * `tile` - type: BOOLEAN.
@@ -323,6 +324,7 @@ Can be created as an extra.
 
 * `pos` - type: NORMALIZED_PAIR.
 * `size` - type: NORMALIZED_PAIR.
+	- You should only set this if you want your text to behave like a "textbox" - that is, your text is multi-line and should wrap.
 * `text` - type: STRING.
 * `color` - type: COLOR.
 * `fontPath` - type: PATH.
@@ -359,14 +361,31 @@ Can be created as an extra.
 
 EmulationStation borrows the concept of "nine patches" from Android (or "9-Slices"). Currently the implementation is very simple and hard-coded to only use 48x48px images (16x16px for each "patch"). Check the `data/resources` directory for some examples (button.png, frame.png).
 
+#### rating
+
+* `pos` - type: NORMALIZED_PAIR.
+* `size` - type: NORMALIZED_PAIR.
+	- Only one value is actually used. The other value should be zero.  (e.g. specify width OR height, but not both.  This is done to maintain the aspect ratio.)
+* `filledPath` - type: PATH.
+	- Path to the "filled star" image.  Image must be square (width equals height).
+* `unfilledPath` - type: PATH.
+	- Path to the "unfilled star" image.  Image must be square (width equals height).
+
+#### datetime
+
+* `pos` - type: NORMALIZED_PAIR.
+* `size` - type: NORMALIZED_PAIR.
+	- You should probably not set this.  Leave it to `fontSize`.
+* `color` - type: COLOR.
+* `fontPath` - type: PATH.
+* `fontSize` - type: FLOAT.
+
 #### sound
 
 * `path` - type: PATH.
 	- Path to the sound file.  Only .wav files are currently supported.
 
 
-*Note that a view may choose to only make only certain properties on a particular element themable!*
-
 
 [*Check out the "official" themes for some more examples!*](http://aloshi.com/emulationstation#themes)
 

src/components/RatingComponent.cpp

@@ -34,6 +34,11 @@ std::string RatingComponent::getValue() const
 
 void RatingComponent::onSizeChanged()
 {
+	if(mSize.y() == 0)
+		mSize[1] = mSize.x() / 5.0f;
+	else if(mSize.x() == 0)
+		mSize[0] = mSize.y() * 5.0f;
+
 	updateVertices();
 }
 

src/views/ViewController.cpp

@@ -69,11 +69,10 @@ void ViewController::playViewTransition()
 
 void ViewController::onFileChanged(FileData* file, FileChangeType change)
 {
-	for(auto it = mGameListViews.begin(); it != mGameListViews.end(); it++)
-	{
+	auto it = mGameListViews.find(file->getSystem());
+	if(it != mGameListViews.end())
 		it->second->onFileChanged(file, change);
 }
-}
 
 void ViewController::launch(FileData* game, Eigen::Vector3f center)
 {
@@ -95,6 +94,7 @@ void ViewController::launch(FileData* game, Eigen::Vector3f center)
 		mCamera = origCamera;
 		mLockInput = false;
 		setAnimation(new LaunchAnimation(mCamera, mFadeOpacity, center, 600), nullptr, true);
+		this->onFileChanged(game, FILE_METADATA_CHANGED);
 	});
 }