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Improve docs concerning custom fonts, themes and accessibility

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Closes https://github.com/emilk/egui/pull/370
Closes https://github.com/emilk/egui/issues/372
This commit is contained in:
Emil Ernerfeldt
2021-05-11 14:56:27 +02:00
parent 8f8ba16696
commit 7b0f991b20
11 changed files with 127 additions and 16 deletions
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37
epaint/src/text/fonts.rs
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@@ -74,11 +74,42 @@ fn rusttype_font_from_font_data(name: &str, data: &FontData) -> rusttype::Font<'
/// Often you would start with [`FontDefinitions::default()`] and then add/change the contents.
///
/// ```
/// let mut fonts = epaint::text::FontDefinitions::default();
/// # use {epaint::text::{FontDefinitions, TextStyle, FontFamily}};
/// # struct FakeEguiCtx {};
/// # impl FakeEguiCtx { fn set_fonts(&self, _: FontDefinitions) {} }
/// # let ctx = FakeEguiCtx {};
/// let mut fonts = FontDefinitions::default();
///
/// // Large button text:
/// fonts.family_and_size.insert(
/// epaint::text::TextStyle::Button,
/// (epaint::text::FontFamily::Proportional, 32.0));
/// TextStyle::Button,
/// (FontFamily::Proportional, 32.0)
/// );
///
/// ctx.set_fonts(fonts);
/// ```
///
/// You can also install your own custom fonts:
/// ```
/// # use {epaint::text::{FontDefinitions, TextStyle, FontFamily}};
/// # struct FakeEguiCtx {};
/// # impl FakeEguiCtx { fn set_fonts(&self, _: FontDefinitions) {} }
/// # let ctx = FakeEguiCtx {};
/// let mut fonts = FontDefinitions::default();
///
/// // Install my own font (maybe supporting non-latin characters):
/// fonts.font_data.insert("my_font".to_owned(),
/// std::borrow::Cow::Borrowed(include_bytes!("../../fonts/Ubuntu-Light.ttf"))); // .ttf and .otf supported
///
/// // Put my font first (highest priority):
/// fonts.fonts_for_family.get_mut(&FontFamily::Proportional).unwrap()
/// .insert(0, "my_font".to_owned());
///
/// // Put my font as last fallback for monospace:
/// fonts.fonts_for_family.get_mut(&FontFamily::Monospace).unwrap()
/// .push("my_font".to_owned());
///
/// ctx.set_fonts(fonts);
/// ```
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]