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use crate::*;
use bevy::{prelude::*, window::PrimaryWindow};
use cosmic_text::Affinity;
use self::buffer::{get_x_offset_center, get_y_offset_center};
#[derive(Component, Default)]
pub struct CosmicPadding(pub Vec2);
#[derive(Component, Default)]
pub struct CosmicWidgetSize(pub Vec2);
pub fn reshape(mut query: Query<&mut CosmicEditor>, mut font_system: ResMut<CosmicFontSystem>) {
for mut cosmic_editor in query.iter_mut() {
cosmic_editor.shape_as_needed(&mut font_system.0, false);
}
}
pub fn set_padding(
mut query: Query<
(
&mut CosmicPadding,
&CosmicTextPosition,
&CosmicBuffer,
&CosmicWidgetSize,
Option<&CosmicEditor>,
),
Or<(
With<CosmicEditor>,
Changed<CosmicTextPosition>,
Changed<CosmicBuffer>,
Changed<CosmicWidgetSize>,
)>,
>,
) {
for (mut padding, position, buffer, size, editor_opt) in query.iter_mut() {
// TODO: At least one of these clones is uneccessary
let mut buffer = buffer.0.clone();
if let Some(editor) = editor_opt {
buffer = editor.with_buffer(|b| b.clone());
}
if !buffer.redraw() {
continue;
}
padding.0 = match position {
CosmicTextPosition::Center => Vec2::new(
get_x_offset_center(size.0.x, &buffer) as f32,
get_y_offset_center(size.0.y, &buffer) as f32,
),
CosmicTextPosition::TopLeft { padding } => Vec2::new(*padding as f32, *padding as f32),
CosmicTextPosition::Left { padding } => Vec2::new(
*padding as f32,
get_y_offset_center(size.0.y, &buffer) as f32,
),
}
}
}
pub fn set_widget_size(
mut query: Query<(&mut CosmicWidgetSize, &Sprite), Changed<Sprite>>,
windows: Query<&Window, With<PrimaryWindow>>,
) {
if windows.iter().len() == 0 {
return;
}
// TODO: early return if sprite size is unchanged
let scale = windows.single().scale_factor();
for (mut size, sprite) in query.iter_mut() {
size.0 = sprite.custom_size.unwrap().ceil() * scale;
}
}
pub fn set_buffer_size(
mut query: Query<
(
&mut CosmicBuffer,
&CosmicMode,
&CosmicWidgetSize,
&CosmicTextPosition,
),
Or<(
Changed<CosmicMode>,
Changed<CosmicWidgetSize>,
Changed<CosmicTextPosition>,
)>,
>,
mut font_system: ResMut<CosmicFontSystem>,
) {
for (mut buffer, mode, size, position) in query.iter_mut() {
let padding_x = match position {
CosmicTextPosition::Center => 0.,
CosmicTextPosition::TopLeft { padding } => *padding as f32,
CosmicTextPosition::Left { padding } => *padding as f32,
};
let (buffer_width, buffer_height) = match mode {
CosmicMode::InfiniteLine => (f32::MAX, size.0.y),
CosmicMode::Wrap => (size.0.x - padding_x, size.0.y),
};
buffer.set_size(&mut font_system.0, buffer_width, buffer_height);
}
}
pub fn new_image_from_default(
mut query: Query<&mut Handle<Image>, Added<CosmicBuffer>>,
mut images: ResMut<Assets<Image>>,
) {
for mut canvas in query.iter_mut() {
*canvas = images.add(Image::default());
}
}
pub fn set_cursor(
mut query: Query<(
&mut XOffset,
&CosmicMode,
&CosmicEditor,
&CosmicBuffer,
&CosmicWidgetSize,
&CosmicPadding,
)>,
) {
for (mut x_offset, mode, editor, buffer, size, padding) in query.iter_mut() {
let mut cursor_x = 0.;
if mode == &CosmicMode::InfiniteLine {
if let Some(line) = buffer.layout_runs().next() {
for (idx, glyph) in line.glyphs.iter().enumerate() {
if editor.cursor().affinity == Affinity::Before {
if idx <= editor.cursor().index {
cursor_x += glyph.w;
}
} else if idx < editor.cursor().index {
cursor_x += glyph.w;
} else {
break;
}
}
}
}
if mode == &CosmicMode::InfiniteLine && x_offset.0.is_none() {
*x_offset = XOffset(Some((0., size.0.x - 2. * padding.0.x)));
}
if let Some((x_min, x_max)) = x_offset.0 {
if cursor_x > x_max {
let diff = cursor_x - x_max;
*x_offset = XOffset(Some((x_min + diff, cursor_x)));
}
if cursor_x < x_min {
let diff = x_min - cursor_x;
*x_offset = XOffset(Some((cursor_x, x_max - diff)));
}
}
}
}
pub fn set_sprite_size_from_ui(
mut source_q: Query<&mut Sprite, With<CosmicBuffer>>,
dest_q: Query<(&Node, &CosmicSource), Changed<Node>>,
) {
for (node, source) in dest_q.iter() {
if let Ok(mut sprite) = source_q.get_mut(source.0) {
sprite.custom_size = Some(node.size().ceil().max(Vec2::ONE));
}
}
}