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Support for diffrent mouse buttons in UI buttons #389

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6 changes: 3 additions & 3 deletions crates/bevy_input/src/input.rs
Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,9 @@ use std::hash::Hash;

/// A "press-able" input of type `T`
pub struct Input<T> {
pressed: HashSet<T>,
just_pressed: HashSet<T>,
just_released: HashSet<T>,
pub pressed: HashSet<T>,
pub just_pressed: HashSet<T>,
pub just_released: HashSet<T>,
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}

impl<T> Default for Input<T> {
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11 changes: 11 additions & 0 deletions crates/bevy_input/src/mouse.rs
Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,17 @@ pub enum MouseButton {
Other(u8),
}

impl Into<u16> for MouseButton {
fn into(self) -> u16 {
match self {
MouseButton::Left => 0,
MouseButton::Right => 1,
MouseButton::Middle => 2,
MouseButton::Other(i) => (i as u16),
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}
}
}

/// A mouse motion event
#[derive(Debug, Clone)]
pub struct MouseMotion {
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80 changes: 68 additions & 12 deletions crates/bevy_ui/src/focus.rs
Original file line number Diff line number Diff line change
Expand Up @@ -9,11 +9,44 @@ use bevy_window::CursorMoved;

#[derive(Copy, Clone, Eq, PartialEq, Debug)]
pub enum Interaction {
Clicked,
Clicked(MouseFlags),
Hovered,
None,
}

#[derive(Copy, Clone, Eq, PartialEq, Debug)]
pub struct MouseFlags(u16);

impl MouseFlags {
pub fn check(self, button: MouseButton) -> bool {
let i: u16 = button.into();
((self.0 << i) >> 15) > 0
}

pub fn build(button: &MouseButton) -> Self {
button.clone().into()
}

pub fn remove(&mut self, button: &MouseButton) {
let i: u16 = button.clone().into();
let mask = !((u16::MAX << 15) >> i);
self.0 &= mask;
}

pub fn add(&mut self, button: &MouseButton) {
let i: u16 = button.clone().into();
let mask = (u16::MAX << 15) >> i;
self.0 |= mask;
}
}

impl From<MouseButton> for MouseFlags {
fn from(button: MouseButton) -> Self {
let i: u16 = button.into();
MouseFlags((u16::MAX << 15) >> i)
}
}

impl Default for Interaction {
fn default() -> Self {
Interaction::None
Expand Down Expand Up @@ -55,17 +88,23 @@ pub fn ui_focus_system(
state.cursor_position = cursor_moved.position;
}

if mouse_button_input.just_released(MouseButton::Left) {
for (_entity, _node, _transform, interaction, _focus_policy) in &mut node_query.iter() {
if let Some(mut interaction) = interaction {
if *interaction == Interaction::Clicked {
for (_entity, _node, _transform, interaction, _focus_policy) in &mut node_query.iter() {
if let Some(mut interaction) = interaction {
for released in &mouse_button_input.just_released {
if let Interaction::Clicked(mut flags) = *interaction {
flags.remove(released);
*interaction = Interaction::Clicked(flags);
}
}

if let Interaction::Clicked(flags) = *interaction {
if flags.0 == 0 {
*interaction = Interaction::None;
}
}
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}
}

let mouse_clicked = mouse_button_input.just_pressed(MouseButton::Left);
let mut hovered_entity = None;

{
Expand Down Expand Up @@ -97,13 +136,30 @@ pub fn ui_focus_system(
moused_over_z_sorted_nodes.sort_by_key(|(_, _, _, z)| -*z);
for (entity, focus_policy, interaction, _) in moused_over_z_sorted_nodes {
if let Some(mut interaction) = interaction {
if mouse_clicked {
// only consider nodes with ClickState "clickable"
if *interaction != Interaction::Clicked {
*interaction = Interaction::Clicked;
}
} else if *interaction == Interaction::None {
//Build bitflags out of hashset
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let new_flags = mouse_button_input.just_pressed.iter().fold(
MouseFlags(0),
|mut flags, button| {
flags.add(button);
flags
},
);

let old_flags =
mouse_button_input
.pressed
.iter()
.fold(MouseFlags(0), |mut flags, button| {
flags.add(button);
flags
});

if old_flags.0 == 0
// nothing is clicked
{
*interaction = Interaction::Hovered;
} else if new_flags.0 != 0 {
*interaction = Interaction::Clicked(old_flags)
}
}

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2 changes: 1 addition & 1 deletion crates/bevy_ui/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ pub mod prelude {
entity::*,
node::*,
widget::{Button, Text},
Anchors, Interaction, Margins,
Anchors, Interaction, Margins, MouseFlags,
};
}

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17 changes: 14 additions & 3 deletions examples/ui/button.rs
Original file line number Diff line number Diff line change
Expand Up @@ -40,8 +40,19 @@ fn button_system(
for (_button, interaction, mut material, children) in &mut interaction_query.iter() {
let mut text = text_query.get_mut::<Text>(children[0]).unwrap();
match *interaction {
Interaction::Clicked => {
text.value = "Press".to_string();
Interaction::Clicked(i) => {
let mut s = String::with_capacity(20);
if i.check(MouseButton::Left) {
s.push_str(" Left");
}
if i.check(MouseButton::Right) {
s.push_str(" Right");
}
if i.check(MouseButton::Middle) {
s.push_str(" Middle");
}

text.value = format!("Pressing button(s){}", s).to_string();
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*material = button_materials.pressed;
}
Interaction::Hovered => {
Expand All @@ -66,7 +77,7 @@ fn setup(
.spawn(UiCameraComponents::default())
.spawn(ButtonComponents {
style: Style {
size: Size::new(Val::Px(150.0), Val::Px(65.0)),
size: Size::new(Val::Px(550.0), Val::Px(65.0)),
// center button
margin: Rect::all(Val::Auto),
// horizontally center child text
Expand Down