54 lines
1.7 KiB
Rust
54 lines
1.7 KiB
Rust
//! Utilities for writing VIZIA widgets.
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use vizia::{Context, Modifiers};
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/// An extension trait for [`Modifiers`] that adds platform-independent getters.
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pub trait ModifiersExt {
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/// Returns true if the Command (on macOS) or Ctrl (on any other platform) key is pressed.
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fn command(&self) -> bool;
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/// Returns true if the Alt (or Option on macOS) key is pressed.
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fn alt(&self) -> bool;
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/// Returns true if the Shift key is pressed.
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fn shift(&self) -> bool;
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}
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impl ModifiersExt for Modifiers {
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fn command(&self) -> bool {
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#[cfg(target_os = "macos")]
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let result = self.contains(Modifiers::LOGO);
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#[cfg(not(target_os = "macos"))]
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let result = self.contains(Modifiers::CTRL);
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result
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}
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fn alt(&self) -> bool {
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self.contains(Modifiers::ALT)
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}
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fn shift(&self) -> bool {
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self.contains(Modifiers::SHIFT)
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}
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}
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/// Remap an x-coordinate to a `[0, 1]` value within the current entity's bounding box. The value
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/// will be clamped to `[0, 1]` if it isn't already in that range.
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///
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/// FIXME: These functions probably include borders, we dont' want that
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pub fn remap_current_entity_x_coordinate(cx: &Context, x_coord: f32) -> f32 {
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let x_pos = cx.cache.get_posx(cx.current);
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let width = cx.cache.get_width(cx.current);
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((x_coord - x_pos) / width).clamp(0.0, 1.0)
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}
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/// Remap an y-coordinate to a `[0, 1]` value within the current entity's bounding box. The value
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/// will be clamped to `[0, 1]` if it isn't already in that range.
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pub fn remap_current_entity_y_coordinate(cx: &Context, y_coord: f32) -> f32 {
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let y_pos = cx.cache.get_posy(cx.current);
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let height = cx.cache.get_height(cx.current);
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((y_coord - y_pos) / height).clamp(0.0, 1.0)
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}
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