add 'visible' theme element

THEMES.md

@@ -576,6 +576,8 @@ Can be created as an extra.
 	- If true, the image will be tiled instead of stretched to fit its size.  Useful for backgrounds.
 * `color` - type: COLOR.
 	- Multiply each pixel's color by this color. For example, an all-white image with `<color>FF0000</color>` would become completely red.  You can also control the transparency of an image with `<color>FFFFFFAA</color>` - keeping all the pixels their normal color and only affecting the alpha channel.
+* `visible` - type: BOOLEAN.
+    - If true, component will be rendered, otherwise rendering will be skipped.  Can be used to hide elements from a particular view.
 * `zIndex` - type: FLOAT.
 	- z-index value for component.  Components will be rendered in order of z-index value from low to high.
 
@@ -632,6 +634,8 @@ Can be created as an extra.
 	- If true, image will be shown when selected game does not have a video and no `default` video is configured.
 * `showSnapshotDelay` - type: BOOLEAN
 	- If true, playing of video will be delayed for `delayed` seconds, when game is selected.
+* `visible` - type: BOOLEAN.
+    - If true, component will be rendered, otherwise rendering will be skipped.  Can be used to hide elements from a particular view.
 * `zIndex` - type: FLOAT.
 	- z-index value for component.  Components will be rendered in order of z-index value from low to high.
 
@@ -662,6 +666,8 @@ Can be created as an extra.
 	- Valid values are "left", "center", or "right".  Controls alignment on the X axis.  "center" will also align vertically.
 * `forceUppercase` - type: BOOLEAN.  Draw text in uppercase.
 * `lineSpacing` - type: FLOAT.  Controls the space between lines (as a multiple of font height).  Default is 1.5.
+* `visible` - type: BOOLEAN.
+    - If true, component will be rendered, otherwise rendering will be skipped.  Can be used to hide elements from a particular view.
 * `zIndex` - type: FLOAT.
 	- z-index value for component.  Components will be rendered in order of z-index value from low to high.
 
@@ -705,11 +711,13 @@ Can be created as an extra.
 * `pos` - type: NORMALIZED_PAIR.
 * `size` - type: NORMALIZED_PAIR.
 * `path` - type: PATH.
-
-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).
+* `visible` - type: BOOLEAN.
+    - If true, component will be rendered, otherwise rendering will be skipped.  Can be used to hide elements from a particular view.
 * `zIndex` - type: FLOAT.
 	- z-index value for component.  Components will be rendered in order of z-index value from low to high.
 
+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.
@@ -727,6 +735,8 @@ EmulationStation borrows the concept of "nine patches" from Android (or "9-Slice
 	- Path to the "unfilled star" image.  Image must be square (width equals height).
 * `color` - type: COLOR.
 	- Multiply each pixel's color by this color. For example, an all-white image with `<color>FF0000</color>` would become completely red.  You can also control the transparency of an image with `<color>FFFFFFAA</color>` - keeping all the pixels their normal color and only affecting the alpha channel.
+* `visible` - type: BOOLEAN.
+    - If true, component will be rendered, otherwise rendering will be skipped.  Can be used to hide elements from a particular view.
 * `zIndex` - type: FLOAT.
 	- z-index value for component.  Components will be rendered in order of z-index value from low to high.	
 
@@ -753,6 +763,8 @@ EmulationStation borrows the concept of "nine patches" from Android (or "9-Slice
 	- Valid values are "left", "center", or "right".  Controls alignment on the X axis.  "center" will also align vertically.
 * `forceUppercase` - type: BOOLEAN.  Draw text in uppercase.
 * `lineSpacing` - type: FLOAT.  Controls the space between lines (as a multiple of font height).  Default is 1.5.
+* `visible` - type: BOOLEAN.
+    - If true, component will be rendered, otherwise rendering will be skipped.  Can be used to hide elements from a particular view.
 * `zIndex` - type: FLOAT.
 	- z-index value for component.  Components will be rendered in order of z-index value from low to high.
 * `displayRelative` - type: BOOLEAN.  Renders the datetime as a a relative string (ex: 'x days ago')

es-app/src/components/RatingComponent.cpp

@@ -112,6 +112,9 @@ void RatingComponent::updateColors()
 
 void RatingComponent::render(const Transform4x4f& parentTrans)
 {
+	if (!isVisible())
+		return;
+
 	Transform4x4f trans = parentTrans * getTransform();
 	trans.round();
 	Renderer::setMatrix(trans);

es-app/src/views/gamelist/DetailedGameListView.cpp

@@ -86,7 +86,7 @@ void DetailedGameListView::onThemeChanged(const std::shared_ptr<ThemeData>& them
 	BasicGameListView::onThemeChanged(theme);
 
 	using namespace ThemeFlags;
-	mImage.applyTheme(theme, getName(), "md_image", POSITION | ThemeFlags::SIZE | Z_INDEX | ROTATION);
+	mImage.applyTheme(theme, getName(), "md_image", POSITION | ThemeFlags::SIZE | Z_INDEX | ROTATION | VISIBLE);
 	mName.applyTheme(theme, getName(), "md_name", ALL);
 
 	initMDLabels();
@@ -116,7 +116,7 @@ void DetailedGameListView::onThemeChanged(const std::shared_ptr<ThemeData>& them
 		values[i]->applyTheme(theme, getName(), valElements[i], ALL ^ ThemeFlags::TEXT);
 	}
 
-	mDescContainer.applyTheme(theme, getName(), "md_description", POSITION | ThemeFlags::SIZE | Z_INDEX);
+	mDescContainer.applyTheme(theme, getName(), "md_description", POSITION | ThemeFlags::SIZE | Z_INDEX | VISIBLE);
 	mDescription.setSize(mDescContainer.getSize().x(), 0);
 	mDescription.applyTheme(theme, getName(), "md_description", ALL ^ (POSITION | ThemeFlags::SIZE | ThemeFlags::ORIGIN | TEXT | ROTATION));
 

es-app/src/views/gamelist/GridGameListView.cpp

@@ -163,7 +163,7 @@ void GridGameListView::onThemeChanged(const std::shared_ptr<ThemeData>& theme)
 		values[i]->applyTheme(theme, getName(), valElements[i], ALL ^ ThemeFlags::TEXT);
 	}
 
-	mDescContainer.applyTheme(theme, getName(), "md_description", POSITION | ThemeFlags::SIZE | Z_INDEX);
+	mDescContainer.applyTheme(theme, getName(), "md_description", POSITION | ThemeFlags::SIZE | Z_INDEX | VISIBLE);
 	mDescription.setSize(mDescContainer.getSize().x(), 0);
 	mDescription.applyTheme(theme, getName(), "md_description", ALL ^ (POSITION | ThemeFlags::SIZE | ThemeFlags::ORIGIN | TEXT | ROTATION));
 

es-app/src/views/gamelist/VideoGameListView.cpp

@@ -123,9 +123,9 @@ void VideoGameListView::onThemeChanged(const std::shared_ptr<ThemeData>& theme)
 	BasicGameListView::onThemeChanged(theme);
 
 	using namespace ThemeFlags;
-	mMarquee.applyTheme(theme, getName(), "md_marquee", POSITION | ThemeFlags::SIZE | Z_INDEX | ROTATION);
-	mImage.applyTheme(theme, getName(), "md_image", POSITION | ThemeFlags::SIZE | Z_INDEX | ROTATION);
-	mVideo->applyTheme(theme, getName(), "md_video", POSITION | ThemeFlags::SIZE | ThemeFlags::DELAY | Z_INDEX | ROTATION);
+	mMarquee.applyTheme(theme, getName(), "md_marquee", POSITION | ThemeFlags::SIZE | Z_INDEX | ROTATION | VISIBLE);
+	mImage.applyTheme(theme, getName(), "md_image", POSITION | ThemeFlags::SIZE | Z_INDEX | ROTATION | VISIBLE);
+	mVideo->applyTheme(theme, getName(), "md_video", POSITION | ThemeFlags::SIZE | ThemeFlags::DELAY | Z_INDEX | ROTATION | VISIBLE);
 	mName.applyTheme(theme, getName(), "md_name", ALL);
 
 	initMDLabels();
@@ -155,7 +155,7 @@ void VideoGameListView::onThemeChanged(const std::shared_ptr<ThemeData>& theme)
 		values[i]->applyTheme(theme, getName(), valElements[i], ALL ^ ThemeFlags::TEXT);
 	}
 
-	mDescContainer.applyTheme(theme, getName(), "md_description", POSITION | ThemeFlags::SIZE | Z_INDEX);
+	mDescContainer.applyTheme(theme, getName(), "md_description", POSITION | ThemeFlags::SIZE | Z_INDEX | VISIBLE);
 	mDescription.setSize(mDescContainer.getSize().x(), 0);
 	mDescription.applyTheme(theme, getName(), "md_description", ALL ^ (POSITION | ThemeFlags::SIZE | ThemeFlags::ORIGIN | TEXT | ROTATION));
 

es-core/src/GuiComponent.cpp

@@ -10,7 +10,7 @@
 
 GuiComponent::GuiComponent(Window* window) : mWindow(window), mParent(NULL), mOpacity(255),
 	mPosition(Vector3f::Zero()), mOrigin(Vector2f::Zero()), mRotationOrigin(0.5, 0.5),
-	mSize(Vector2f::Zero()), mTransform(Transform4x4f::Identity()), mIsProcessing(false)
+	mSize(Vector2f::Zero()), mTransform(Transform4x4f::Identity()), mIsProcessing(false), mVisible(true)
 {
 	for(unsigned char i = 0; i < MAX_ANIMATIONS; i++)
 		mAnimationMap[i] = NULL;
@@ -62,6 +62,9 @@ void GuiComponent::update(int deltaTime)
 
 void GuiComponent::render(const Transform4x4f& parentTrans)
 {
+	if (!isVisible())
+		return;
+
 	Transform4x4f trans = parentTrans * getTransform();
 	renderChildren(trans);
 }
@@ -157,6 +160,15 @@ void GuiComponent::setDefaultZIndex(float z)
 	mDefaultZIndex = z;
 }
 
+bool GuiComponent::isVisible() const
+{
+	return mVisible;
+}
+void GuiComponent::setVisible(bool visible)
+{
+	mVisible = visible;
+}
+
 Vector2f GuiComponent::getCenter() const
 {
 	return Vector2f(mPosition.x() - (getSize().x() * mOrigin.x()) + getSize().x() / 2,
@@ -424,6 +436,11 @@ void GuiComponent::applyTheme(const std::shared_ptr<ThemeData>& theme, const std
 		setZIndex(elem->get<float>("zIndex"));
 	else
 		setZIndex(getDefaultZIndex());
+
+	if(properties & ThemeFlags::VISIBLE && elem->has("visible"))
+		setVisible(elem->get<bool>("visible"));
+	else
+		setVisible(true);
 }
 
 void GuiComponent::updateHelpPrompts()

es-core/src/GuiComponent.h

@@ -76,6 +76,9 @@ public:
     float getDefaultZIndex() const;
     void setDefaultZIndex(float zIndex);
 
+    bool isVisible() const;
+    void setVisible(bool visible);
+
 	// Returns the center point of the image (takes origin into account).
 	Vector2f getCenter() const;
 
@@ -157,6 +160,7 @@ protected:
 	float mZIndex = 0;
 
 	bool mIsProcessing;
+	bool mVisible;
 
 public:
 	const static unsigned char MAX_ANIMATIONS = 4;

es-core/src/ThemeData.cpp

@@ -10,7 +10,7 @@
 #include <algorithm>
 
 std::vector<std::string> ThemeData::sSupportedViews { { "system" }, { "basic" }, { "detailed" }, { "grid" }, { "video" } };
-std::vector<std::string> ThemeData::sSupportedFeatures { { "video" }, { "carousel" }, { "z-index" } };
+std::vector<std::string> ThemeData::sSupportedFeatures { { "video" }, { "carousel" }, { "z-index" }, { "visible" } };
 
 std::map<std::string, std::map<std::string, ThemeData::ElementPropertyType>> ThemeData::sElementMap {
 	{ "image", {
@@ -24,6 +24,7 @@ std::map<std::string, std::map<std::string, ThemeData::ElementPropertyType>> The
 		{ "default", PATH },
 		{ "tile", BOOLEAN },
 		{ "color", COLOR },
+		{ "visible", BOOLEAN },
 		{ "zIndex", FLOAT } } },
 	{ "imagegrid", {
 		{ "pos", NORMALIZED_PAIR },
@@ -56,6 +57,7 @@ std::map<std::string, std::map<std::string, ThemeData::ElementPropertyType>> The
 		{ "forceUppercase", BOOLEAN },
 		{ "lineSpacing", FLOAT },
 		{ "value", STRING },
+		{ "visible", BOOLEAN },
 		{ "zIndex", FLOAT } } },
 	{ "textlist", {
 		{ "pos", NORMALIZED_PAIR },
@@ -81,11 +83,13 @@ std::map<std::string, std::map<std::string, ThemeData::ElementPropertyType>> The
 		{ "pos", NORMALIZED_PAIR },
 		{ "size", NORMALIZED_PAIR },
 	 	{ "origin", NORMALIZED_PAIR },
+	 	{ "visible", BOOLEAN },
 	 	{ "zIndex", FLOAT } } },
 	{ "ninepatch", {
 		{ "pos", NORMALIZED_PAIR },
 		{ "size", NORMALIZED_PAIR },
 		{ "path", PATH },
+	 	{ "visible", BOOLEAN },
 		{ "zIndex", FLOAT } } },
 	{ "datetime", {
 		{ "pos", NORMALIZED_PAIR },
@@ -103,6 +107,7 @@ std::map<std::string, std::map<std::string, ThemeData::ElementPropertyType>> The
 		{ "value", STRING },
 		{ "format", STRING },
 		{ "displayRelative", BOOLEAN },
+	 	{ "visible", BOOLEAN },
 	 	{ "zIndex", FLOAT } } },
 	{ "rating", {
 		{ "pos", NORMALIZED_PAIR },
@@ -113,6 +118,7 @@ std::map<std::string, std::map<std::string, ThemeData::ElementPropertyType>> The
 		{ "color", COLOR },
 		{ "filledPath", PATH },
 		{ "unfilledPath", PATH },
+		{ "visible", BOOLEAN },
 		{ "zIndex", FLOAT } } },
 	{ "sound", {
 		{ "path", PATH } } },
@@ -132,6 +138,7 @@ std::map<std::string, std::map<std::string, ThemeData::ElementPropertyType>> The
 		{ "rotationOrigin", NORMALIZED_PAIR },
 		{ "default", PATH },
 		{ "delay", FLOAT },
+	 	{ "visible", BOOLEAN },
 	 	{ "zIndex", FLOAT },
 		{ "showSnapshotNoVideo", BOOLEAN },
 		{ "showSnapshotDelay", BOOLEAN } } },

es-core/src/ThemeData.h

@@ -41,6 +41,7 @@ namespace ThemeFlags
 		DELAY = 4096,
 		Z_INDEX = 8192,
 		ROTATION = 16384,
+		VISIBLE = 32768,
 		ALL = 0xFFFFFFFF
 	};
 }

es-core/src/components/ImageComponent.cpp

@@ -317,6 +317,9 @@ void ImageComponent::updateColors()
 
 void ImageComponent::render(const Transform4x4f& parentTrans)
 {
+	if (!isVisible())
+		return;
+
 	Transform4x4f trans = parentTrans * getTransform();
 	Renderer::setMatrix(trans);
 
@@ -466,6 +469,11 @@ void ImageComponent::applyTheme(const std::shared_ptr<ThemeData>& theme, const s
 		setZIndex(elem->get<float>("zIndex"));
 	else
 		setZIndex(getDefaultZIndex());
+
+	if(properties & ThemeFlags::VISIBLE && elem->has("visible"))
+		setVisible(elem->get<bool>("visible"));
+	else
+		setVisible(true);
 }
 
 std::vector<HelpPrompt> ImageComponent::getHelpPrompts()

es-core/src/components/NinePatchComponent.cpp

@@ -103,6 +103,9 @@ void NinePatchComponent::buildVertices()
 
 void NinePatchComponent::render(const Transform4x4f& parentTrans)
 {
+	if (!isVisible())
+		return;
+
 	Transform4x4f trans = parentTrans * getTransform();
 	trans.round();
 	

es-core/src/components/ScrollableContainer.cpp

@@ -13,6 +13,9 @@ ScrollableContainer::ScrollableContainer(Window* window) : GuiComponent(window),
 
 void ScrollableContainer::render(const Transform4x4f& parentTrans)
 {
+	if (!isVisible())
+		return;
+
 	Transform4x4f trans = parentTrans * getTransform();
 
 	Vector2i clipPos((int)trans.translation().x(), (int)trans.translation().y());

es-core/src/components/TextComponent.cpp

@@ -95,6 +95,9 @@ void TextComponent::setUppercase(bool uppercase)
 
 void TextComponent::render(const Transform4x4f& parentTrans)
 {
+	if (!isVisible())
+		return;
+
 	Transform4x4f trans = parentTrans * getTransform();
 
 	if (mRenderBackground)

es-core/src/components/VideoComponent.cpp

@@ -145,6 +145,9 @@ void VideoComponent::setOpacity(unsigned char opacity)
 
 void VideoComponent::render(const Transform4x4f& parentTrans)
 {
+	if (!isVisible())
+		return;
+
 	Transform4x4f trans = parentTrans * getTransform();
 	GuiComponent::renderChildren(trans);
 
@@ -223,6 +226,11 @@ void VideoComponent::applyTheme(const std::shared_ptr<ThemeData>& theme, const s
 		setZIndex(elem->get<float>("zIndex"));
 	else
 		setZIndex(getDefaultZIndex());
+
+	if(properties & ThemeFlags::VISIBLE && elem->has("visible"))
+		setVisible(elem->get<bool>("visible"));
+	else
+		setVisible(true);
 }
 
 std::vector<HelpPrompt> VideoComponent::getHelpPrompts()

es-core/src/components/VideoPlayerComponent.cpp

@@ -30,6 +30,9 @@ VideoPlayerComponent::~VideoPlayerComponent()
 
 void VideoPlayerComponent::render(const Transform4x4f& parentTrans)
 {
+	if (!isVisible())
+		return;
+
 	VideoComponent::render(parentTrans);
 
 	if (!mIsPlaying || mPlayerPid == -1)

es-core/src/components/VideoVlcComponent.cpp

@@ -131,6 +131,9 @@ void VideoVlcComponent::resize()
 
 void VideoVlcComponent::render(const Transform4x4f& parentTrans)
 {
+	if (!isVisible())
+		return;
+
 	VideoComponent::render(parentTrans);
 	float x, y;