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mod icon_dir;
mod icon_file;
mod icon_theme;
pub use icon_dir::{IconDir, IconSizeType};
pub use icon_file::{IconFile, IconFileType};
pub(crate) use icon_theme::IconThemes;
/// Struct containing information about a themed icon.
#[derive(Clone, Debug, Hash, PartialEq, Eq)]
pub struct Icon {
icon_name: String,
theme_name: String,
files: Vec<IconFile>,
}
impl Icon {
/// Returns the associated icon's name.
pub fn icon_name(&self) -> &str {
&self.icon_name
}
/// Returns the associated icon's theme name.
pub fn theme_name(&self) -> &str {
&self.theme_name
}
/// Returns the icon files found for the associated icon.
pub fn files(&self) -> &[IconFile] {
&self.files
}
/// Returns the file of the associated icon that fits the given size best and has a scale of 1.
/// If there is no exact fit available, the next bigger one is chosen.
/// If there is no bigger one, the next smaller one is returned.
/// If that cannot be found, the scale restriction is ignored.
///
/// # Arguments
///
/// * `size` - The ideal size of the returned icon file.
///
///# Example
///
/// ```
/// use std::ops::Deref;
/// use icon_loader::IconLoader;
///
/// let loader = IconLoader::new();
/// if let Some(icon) = loader.load_icon("minimum") {
/// let icon_file = icon.file_for_size(32);
/// };
/// ```
pub fn file_for_size(&self, size: u16) -> &IconFile {
self.file_for_size_scaled(size, 1)
}
/// Returns the file of the associated icon that fits the given size and scale best.
/// If there is no exact fit available, the next bigger size is chosen.
/// If there is no bigger fit with the given scale, the next smaller one is returned.
/// If no file with the preferred scale can be found, one with the size `size * scale` and scale 1 is looked for.
/// If that cannot be found, the scale restriction is ignored.
///
/// # Arguments
///
/// * `size` - The ideal size of the returned icon file.
/// * `scale` - The preferred scale of the returned icon file.
///
///# Example
///
/// ```
/// use std::ops::Deref;
/// use icon_loader::IconLoader;
///
/// let loader = IconLoader::new();
/// if let Some(icon) = loader.load_icon("minimum") {
/// let icon_file = icon.file_for_size_scaled(32, 2);
/// };
/// ```
pub fn file_for_size_scaled(&self, size: u16, scale: u16) -> &IconFile {
if let Some(file) = self.file_for_size_filtered(size, |file| file.scale() == scale) {
return file;
}
if let Some(file) = self.file_for_size_filtered(size * scale, |file| file.scale() == 1) {
return file;
}
// If we don't filter, there is always at least one file on disk.
self.file_for_size_filtered(size, |_| true).unwrap()
}
/// Returns the file of the associated icon that fits the given size best and matches the provided filter.
/// If there is no exact fit available, the next bigger one is chosen.
/// If there is no bigger one, the next smaller one is returned.
/// Use this, if you want only files of type PNG or anything like that.
///
/// # Arguments
///
/// * `size` - The ideal size of the returned icon file.
/// * `filter` - A function that takes a reference to an [`IconFile`](icon::IconFile) and returns true, if it passes the test and false otherwise.
///
/// # Example
///
/// ```
/// use std::ops::Deref;
/// use icon_loader::{IconLoader, IconFileType};
///
/// let loader = IconLoader::new();
/// if let Some(icon) = loader.load_icon("minimum") {
/// let icon_file = icon.file_for_size_filtered(32, |file| file.icon_type() == IconFileType::PNG);
/// };
/// ```
pub fn file_for_size_filtered(
&self,
size: u16,
filter: impl Fn(&IconFile) -> bool,
) -> Option<&IconFile> {
let files = self.files.iter().filter(|&file| filter(file));
// Try to return an exact fit.
if let Some(icon_file) = files.clone().find(|file| file.dir_info().size() == size) {
return Some(icon_file);
}
// Try to return a threshold fit.
if let Some(icon_file) = files
.clone()
.filter(|file| file.dir_info().size_type() == IconSizeType::Threshold)
.find(|file| {
size >= file.dir_info().size() - file.dir_info().threshold()
&& size <= file.dir_info().size() + file.dir_info().threshold()
})
{
return Some(icon_file);
}
// Try to return a slightly bigger fit.
if let Some(icon_file) = files
.clone()
.filter(|file| file.dir_info().size() > size)
.min_by_key(|file| file.dir_info().size())
{
return Some(icon_file);
}
// Return the biggest available.
files.max_by_key(|file| file.dir_info().size())
}
pub(crate) fn new(icon_name: String, theme_name: String, files: Vec<IconFile>) -> Option<Self> {
if icon_name.is_empty() || theme_name.is_empty() || files.is_empty() {
None
} else {
Some(Self {
files,
icon_name,
theme_name,
})
}
}
}