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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:50 +0000 |
commit | 9835e2ae736235810b4ea1c162ca5e65c547e770 (patch) | |
tree | 3fcebf40ed70e581d776a8a4c65923e8ec20e026 /vendor/plotters/src/style/font/naive.rs | |
parent | Releasing progress-linux version 1.70.0+dfsg2-1~progress7.99u1. (diff) | |
download | rustc-9835e2ae736235810b4ea1c162ca5e65c547e770.tar.xz rustc-9835e2ae736235810b4ea1c162ca5e65c547e770.zip |
Merging upstream version 1.71.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/plotters/src/style/font/naive.rs')
-rw-r--r-- | vendor/plotters/src/style/font/naive.rs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/vendor/plotters/src/style/font/naive.rs b/vendor/plotters/src/style/font/naive.rs new file mode 100644 index 000000000..99530401b --- /dev/null +++ b/vendor/plotters/src/style/font/naive.rs @@ -0,0 +1,40 @@ +use super::{FontData, FontFamily, FontStyle, LayoutBox}; + +#[derive(Debug, Clone)] +pub struct FontError; + +impl std::fmt::Display for FontError { + fn fmt(&self, fmt: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> { + write!(fmt, "General Error")?; + Ok(()) + } +} + +impl std::error::Error for FontError {} + +#[derive(Clone)] +pub struct FontDataInternal(String, String); + +impl FontData for FontDataInternal { + type ErrorType = FontError; + fn new(family: FontFamily, style: FontStyle) -> Result<Self, FontError> { + Ok(FontDataInternal( + family.as_str().into(), + style.as_str().into(), + )) + } + + /// Note: This is only a crude estimatation, since for some backend such as SVG, we have no way to + /// know the real size of the text anyway. Thus using font-kit is an overkill and doesn't helps + /// the layout. + fn estimate_layout(&self, size: f64, text: &str) -> Result<LayoutBox, Self::ErrorType> { + let em = size / 1.24 / 1.24; + Ok(( + (0, -em.round() as i32), + ( + (em * 0.7 * text.len() as f64).round() as i32, + (em * 0.24).round() as i32, + ), + )) + } +} |