/// <summary> Cuts a texture from the main atlas based on given parameters. </summary>
/// <param name="elementStyle"> The style of the element to read. </param>
/// <param name="graphicsDevice"> The graphics device to create the texture on. </param>
/// <returns></returns>
private Texture2D calculateBackground(ElementStyle elementStyle, GraphicsDevice graphicsDevice)
{
//A new texture to be returned
Texture2D backgroundTexture;
//Information about the style parameters
bool containsBackgroundNode = elementStyle.Parameters.ContainsKey("Background");
bool containsImageParameter = containsBackgroundNode ? elementStyle.Parameters["Background"].Parameters.ContainsKey("Image") : false;
bool containsColourParameter = containsBackgroundNode ? elementStyle.Parameters["Background"].Parameters.ContainsKey("Colour") : false;
//If there's no background style node or no image name parameter, return a default background
if (!containsBackgroundNode || (containsBackgroundNode && !containsImageParameter))
{
//Create a 1x1 texture
backgroundTexture = new Texture2D(graphicsDevice, 1, 1);
//Since we know there's no image parameter, check if there's a colour parameter and use that to colour the texture instead of the default colour
Color backgroundColour = containsColourParameter ? elementStyle.Parameters["Background"].Parameters["Colour"].ParseColour() : Color.Honeydew;
//Set the texture to the colour and return it
backgroundTexture.SetData(new Color[1] {
backgroundColour
});
return(backgroundTexture);
}
//The Background node of the style
StyleParameter backgroundParameter = elementStyle.Parameters["Background"];
//If the texture doesn't exist within the list, throw an error
if (!textures.ContainsKey(backgroundParameter.Parameters["Image"]))
{
throw new Exception("Image parameter does not match texture defined in Resources node.");
}
//The main image the background will be cut from
Texture2D backgroundAtlas = textures[backgroundParameter.Parameters["Image"]];
//If a source is given, return that cut from the atlas, otherwise return the atlas itself
if (backgroundParameter.Parameters.ContainsKey("Source"))
{
return(backgroundAtlas.GetTexture(backgroundParameter.Parameters["Source"].ParseRectangle()));
}
else
{
return(backgroundAtlas);
}
}
/// <summary> Calculates the corners and edges of the border and fills them into a 3x3 array. </summary>
/// <param name="elementStyle"> The style of the element. </param>
/// <param name="graphicsDevice"> The graphics device to load onto. </param>
/// <returns> A 3x3 Texture2D array with the edges and corners filled in. </returns>
private Texture2D[,] calculateBorder(ElementStyle elementStyle, GraphicsDevice graphicsDevice)
{
//A new texture to be returned
Texture2D borderAtlas;
//Information about the style parameters
bool containsBorderNode = elementStyle.Parameters.ContainsKey("Border");
bool containsImageParameter = containsBorderNode ? elementStyle.Parameters["Border"].Parameters.ContainsKey("Image") : false;
bool containsColourParameter = containsBorderNode ? elementStyle.Parameters["Border"].Parameters.ContainsKey("Colour") : false;
//If there's no border style node or no image name parameter, return a default background
if (!containsBorderNode || (containsBorderNode && !containsImageParameter))
{
//Create a 1x1 texture
borderAtlas = new Texture2D(graphicsDevice, 1, 1);
//Since we know there's no image parameter, check if there's a colour parameter and use that to colour the texture instead of the default colour
Color borderColour = containsColourParameter ? elementStyle.Parameters["Border"].Parameters["Colour"].ParseColour() : Color.Black;
//Set the texture to the colour
borderAtlas.SetData(new Color[1] {
borderColour
});
//Use this texture for the edges of an array and return it
return(new Texture2D[3, 3]
{
{ borderAtlas, borderAtlas, borderAtlas },
{ borderAtlas, null, borderAtlas },
{ borderAtlas, borderAtlas, borderAtlas }
});
}
//The border node of the style
StyleParameter borderParameter = elementStyle.Parameters["Border"];
//If the texture doesn't exist within the list, throw an error
if (!textures.ContainsKey(borderParameter.Parameters["Image"]))
{
throw new Exception("Image parameter does not match texture defined in Resources node.");
}
//The atlas that the edges and corners are cut from
borderAtlas = textures[borderParameter.Parameters["Image"]];
//Initialises the array
Texture2D[,] borderArray = new Texture2D[3, 3];
//Local function that cuts from the given atlas using the given string rectangle
Texture2D calculateBorderPiece(string source, Texture2D atlas) => atlas.GetTexture(source.ParseRectangle());
//Given a corner source, all corners will use this unless specified otherwise. Defaults to the atlas
Texture2D defaultCorner = (borderParameter.Parameters.ContainsKey("Corner")) ? calculateBorderPiece(borderParameter.Parameters["Corner"], borderAtlas) : borderAtlas;
//Sets the corners
borderArray[0, 0] = (borderParameter.Parameters.ContainsKey("TopLeft-Corner")) ? calculateBorderPiece(borderParameter.Parameters["TopLeft-Corner"], borderAtlas) : defaultCorner;
borderArray[2, 0] = (borderParameter.Parameters.ContainsKey("TopRight-Corner")) ? calculateBorderPiece(borderParameter.Parameters["TopRight-Corner"], borderAtlas) : defaultCorner.Rotate(1);
borderArray[0, 2] = (borderParameter.Parameters.ContainsKey("BottomLeft-Corner")) ? calculateBorderPiece(borderParameter.Parameters["BottomLeft-Corner"], borderAtlas) : defaultCorner.Rotate(3);
borderArray[2, 2] = (borderParameter.Parameters.ContainsKey("BottomRight-Corner")) ? calculateBorderPiece(borderParameter.Parameters["BottomRight-Corner"], borderAtlas) : defaultCorner.Rotate(2);
//Given an edge source, all edges will use this unless specified otherwise. Defaults to the atlas
Texture2D defaultEdge = (borderParameter.Parameters.ContainsKey("Edge")) ? calculateBorderPiece(borderParameter.Parameters["Edge"], borderAtlas) : borderAtlas;
//Sets the edges
borderArray[1, 0] = (borderParameter.Parameters.ContainsKey("Top-Edge")) ? calculateBorderPiece(borderParameter.Parameters["Top-Edge"], borderAtlas) : defaultEdge;
borderArray[0, 1] = (borderParameter.Parameters.ContainsKey("Left-Edge")) ? calculateBorderPiece(borderParameter.Parameters["Left-Edge"], borderAtlas) : defaultEdge.Rotate(3);
borderArray[1, 2] = (borderParameter.Parameters.ContainsKey("Bottom-Edge")) ? calculateBorderPiece(borderParameter.Parameters["Bottom-Edge"], borderAtlas) : defaultEdge.Rotate(2);
borderArray[2, 1] = (borderParameter.Parameters.ContainsKey("Right-Edge")) ? calculateBorderPiece(borderParameter.Parameters["Right-Edge"], borderAtlas) : defaultEdge.Rotate(1);
//Returns the final array
return(borderArray);
}
/// <summary> Goes through the main style node and loads it into a list of data. </summary>
/// <param name="styleNode"> The style node. </param>
private void loadStyles(XmlNode styleNode)
{
//Checks that the style node exists and has children
if (styleNode == null)
{
throw new Exception("Missing Style node.");
}
if (!styleNode.HasChildNodes)
{
throw new Exception("Style node has no child nodes.");
}
//Initialises the style list
styles = new List <ElementStyle>(styleNode.ChildNodes.Count);
//Goes through each element style node and adds it to the styles
for (int s = 0; s < styleNode.ChildNodes.Count; s++)
{
//This style's node
XmlNode elementStyleNode = styleNode.ChildNodes[s];
//Creates a new ElementStyle to store this style
ElementStyle style = new ElementStyle();
//Sets the style's type, as long as the type is within the Element namespace
if (typeof(Element).Assembly.GetType(typeof(Element).Namespace + "." + elementStyleNode.Name) != null)
{
style.Type = typeof(Element).Assembly.GetType(typeof(Element).Namespace + "." + elementStyleNode.Name);
}
else
{
throw new Exception("Invalid style type, style node's name must match element name.");
}
//Sets the style's name if supplied, otherwise defaults to string.Empty
style.Name = (elementStyleNode.Attributes.GetNamedItem("Name") == null) ? string.Empty : elementStyleNode.Attributes.GetNamedItem("Name").Value;
//Initialises the style's parameters array
style.Parameters = new Dictionary <string, StyleParameter>(elementStyleNode.ChildNodes.Count);
//Goes through each node within the element style node
foreach (XmlNode styleParameter in elementStyleNode.ChildNodes)
{
//Creates a StyleParameter with the given name
StyleParameter parameter = new StyleParameter()
{
Name = styleParameter.Name,
Parameters = new Dictionary <string, string>(styleParameter.Attributes.Count)
};
//Goes through each attribute of the parameter and adds it to the styleParameter's dictionary
foreach (XmlAttribute attribute in styleParameter.Attributes)
{
parameter.Parameters[attribute.Name] = attribute.Value;
}
//Adds the parameter to the style
style.Parameters[styleParameter.Name] = parameter;
}
//Adds the style to the list
styles.Add(style);
}
}