84 lines
3.2 KiB
Rust
84 lines
3.2 KiB
Rust
//! Utilities for writing VIZIA widgets.
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use vizia::prelude::*;
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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 a `[0, 1]` value to an x-coordinate 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. This ignores the border width.
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pub fn remap_current_entity_x_t(cx: &EventContext, t: f32) -> f32 {
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let border_width = match cx.style.border_width.get(cx.current()) {
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Some(Units::Pixels(x)) => *x,
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_ => 0.0,
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};
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let x_pos = cx.cache.get_posx(cx.current()) + border_width;
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let width = cx.cache.get_width(cx.current()) - (border_width * 2.0);
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x_pos + (width * t.clamp(0.0, 1.0))
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}
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/// Remap a `[0, 1]` value to a y-coordinate 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. This ignores the border width.
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pub fn remap_current_entity_y_t(cx: &EventContext, t: f32) -> f32 {
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let border_width = match cx.style.border_width.get(cx.current()) {
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Some(Units::Pixels(x)) => *x,
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_ => 0.0,
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};
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let y_pos = cx.cache.get_posy(cx.current()) + border_width;
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let height = cx.cache.get_height(cx.current()) - (border_width * 2.0);
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y_pos + (height * t.clamp(0.0, 1.0))
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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. This ignores the border width.
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pub fn remap_current_entity_x_coordinate(cx: &EventContext, x_coord: f32) -> f32 {
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let border_width = match cx.style.border_width.get(cx.current()) {
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Some(Units::Pixels(x)) => *x,
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_ => 0.0,
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};
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let x_pos = cx.cache.get_posx(cx.current()) + border_width;
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let width = cx.cache.get_width(cx.current()) - (border_width * 2.0);
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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. This ignores the border width.
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pub fn remap_current_entity_y_coordinate(cx: &EventContext, y_coord: f32) -> f32 {
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let border_width = match cx.style.border_width.get(cx.current()) {
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Some(Units::Pixels(x)) => *x,
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_ => 0.0,
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};
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let y_pos = cx.cache.get_posy(cx.current()) + border_width;
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let height = cx.cache.get_height(cx.current()) - (border_width * 2.0);
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((y_coord - y_pos) / height).clamp(0.0, 1.0)
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}
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