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use std::fmt::Write;
/// Holds parameters for the SuperTitle
#[derive(Clone)]
pub struct SuperTitleParams {
/// The x location of the text in figure coordinates (default = 0.5)
x: Option<f64>,
/// The y location of the text in figure coordinates (default = 0.98)
y: Option<f64>,
/// The horizontal alignment of the text relative to (x, y) (default = "center")
///
/// Options: "center", "left", "right"
align_horizontal: String,
/// The vertical alignment of the text relative to (x, y) (default = "top")
///
/// Options: "top", "center", "bottom", "baseline"
align_vertical: String,
/// The font size of the text
fontsize: f64,
/// The font weight of the text
fontweight: f64,
}
impl SuperTitleParams {
/// Allocates a new instance
pub fn new() -> Self {
SuperTitleParams {
x: None,
y: None,
align_horizontal: String::new(),
align_vertical: String::new(),
fontsize: 0.0,
fontweight: 0.0,
}
}
/// Sets the x location of the text in figure coordinates (default = 0.5)
pub fn set_x(&mut self, value: f64) -> &mut Self {
self.x = Some(value);
self
}
/// Sets the y location of the text in figure coordinates (default = 0.98)
pub fn set_y(&mut self, value: f64) -> &mut Self {
self.y = Some(value);
self
}
/// Sets the horizontal alignment of the text relative to (x, y) (default = "center")
///
/// Options: "center", "left", "right"
pub fn set_align_horizontal(&mut self, value: &str) -> &mut Self {
self.align_horizontal = String::from(value);
self
}
/// Sets the vertical alignment of the text relative to (x, y) (default = "top")
///
/// Options: "top", "center", "bottom", "baseline"
pub fn set_align_vertical(&mut self, value: &str) -> &mut Self {
self.align_vertical = String::from(value);
self
}
/// Sets the font size of the text
pub fn set_fontsize(&mut self, value: f64) -> &mut Self {
self.fontsize = value;
self
}
/// Sets the font weight of the text
pub fn set_fontweight(&mut self, value: f64) -> &mut Self {
self.fontweight = value;
self
}
/// Returns options for SuperTitle
pub(crate) fn options(&self) -> String {
let mut opt = String::new();
if let Some(v) = self.x {
write!(&mut opt, ",x={}", v).unwrap()
}
if let Some(v) = self.y {
write!(&mut opt, ",y={}", v).unwrap()
}
if self.align_horizontal != "" {
write!(&mut opt, ",ha='{}'", self.align_horizontal).unwrap()
}
if self.align_vertical != "" {
write!(&mut opt, ",va='{}'", self.align_vertical).unwrap()
}
if self.fontsize > 0.0 {
write!(&mut opt, ",fontsize={}", self.fontsize).unwrap()
}
if self.fontweight > 0.0 {
write!(&mut opt, ",fontweight={}", self.fontweight).unwrap()
}
opt
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#[cfg(test)]
mod tests {
use super::SuperTitleParams;
#[test]
fn new_works() {
let params = SuperTitleParams::new();
assert_eq!(params.x, None);
assert_eq!(params.y, None);
assert_eq!(params.align_horizontal.len(), 0);
assert_eq!(params.align_vertical.len(), 0);
assert_eq!(params.fontsize, 0.0);
assert_eq!(params.fontweight, 0.0);
}
#[test]
fn clone_works() {
let params = SuperTitleParams::new();
let clone = params.clone();
assert_eq!(clone.fontsize, 0.0);
}
#[test]
fn options_works() {
let mut params = SuperTitleParams::new();
params
.set_x(0.6)
.set_y(0.8)
.set_align_horizontal("center")
.set_align_vertical("center")
.set_fontsize(8.0)
.set_fontweight(10.0);
let opt = params.options();
assert_eq!(
opt,
",x=0.6\
,y=0.8\
,ha='center'\
,va='center'\
,fontsize=8\
,fontweight=10"
);
}
}