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40 lines
2.3 KiB
Markdown
40 lines
2.3 KiB
Markdown
# Font Extensions
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The **MLEM** base package features several additional font manipulation methods, including line splitting and text truncating. These abilities can be accessed through generic fonts.
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## Generic fonts
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MLEM features the `GenericFont` class along with a `GenericSpriteFont` implementation. This is used by the **MLEM.Ui** package, but it can also be used separately to have more control over font rendering.
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Additionally, the **MLEM.Extended** package provides the following generic fonts:
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- `GenericBitmapFont`, which uses [MonoGame.Extended](http://www.monogameextended.net/)'s `SpriteFont`
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- `GenericStashFont`, which uses [FontStashSharp](https://github.com/rds1983/FontStashSharp)'s fonts
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### Creating a generic font
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To create a generic font, simply create an instance of the desired generic font class when loading your game:
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```cs
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// Using MonoGame SpriteFonts
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var spriteFont = new GenericSpriteFont(this.Content.Load<SpriteFont>("Fonts/ExampleFont"));
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```
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## Line splitting
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Using generic fonts, a long line of text can be split into multiple lines based on a maximum width in pixels. The split text that is returned is delimited by `\n` (newline characters).
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```cs
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var split = spriteFont.SplitString("This is a really long line of text [...]", width: 100, scale: 1);
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spriteFont.DrawString(this.SpriteBatch, split, new Vector2(10, 10), Color.White);
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```
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Alternatively, the `SplitStringSeparate` method returns a collection of strings, where each entry represents a place where a split has been introduced. Using this method, you can differentiate between pre-existing newline characters and newly introduced ones.
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```cs
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var split = spriteFont.SplitStringSeparate("This is a line of text that contains\nnewline characters!", width: 10, scale: 1);
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// returns something like ["This is a line of ", "text that contains\nnewline characters!"]
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```
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## Truncating
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Using generic fonts, a long line of text can also be truncated to fit a certain width in pixels. The remaining text that doesn't fit will simply be chopped off of the end (or start) of the string.
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```cs
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// Truncate from the front
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var truncFront = spriteFont.TruncateString("This is a really long line of text [...]", width: 100, fromBack: false, scale: 1);
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// Truncate from the back
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var truncBack = spriteFont.TruncateString("This is a really long line of text [...]", width: 100, fromBack: true, scale: 1);
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```
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