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ability to move keys in CurveEditor widget

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This commit is contained in:
Dmitry
2021-08-03 11:04:50 +03:00
parent 92aab4d057
commit 4a16fe117f
1 changed files with 68 additions and 14 deletions
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rg3d-ui/src/curve/mod.rs
+68 -14
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@@ -1,5 +1,6 @@
#![allow(dead_code)] // TODO
use crate::message::ButtonState;
use crate::{
brush::Brush,
core::{
@@ -55,12 +56,14 @@ crate::define_widget_deref!(CurveEditor<M, C>);
#[derive(Clone)]
struct DragEntry {
key: usize,
mouse_relative_offset: Vector2<f32>,
initial_position: Vector2<f32>,
}
#[derive(Clone)]
enum OperationContext {
DragKeys {
// In local coordinates.
initial_mouse_pos: Vector2<f32>,
entries: Vec<DragEntry>,
},
MoveView {
@@ -68,6 +71,8 @@ enum OperationContext {
initial_view_pos: Vector2<f32>,
},
DragTangent {
// In local coordinates.
initial_mouse_pos: Vector2<f32>,
key: usize,
left: bool,
},
@@ -190,25 +195,69 @@ impl<M: MessageData, C: Control<M, C>> Control<M, C> for CurveEditor<M, C> {
if message.destination() == self.handle {
match message.data() {
UiMessageData::Widget(msg) => match msg {
WidgetMessage::MouseMove { pos, .. } => {
WidgetMessage::MouseMove { pos, state } => {
let local_mouse_pos = self.point_to_local_space(*pos);
if let Some(operation_context) = self.operation_context.as_ref() {
match operation_context {
OperationContext::DragKeys { .. } => {}
OperationContext::DragKeys {
entries,
initial_mouse_pos,
} => {
let mut local_delta = local_mouse_pos - initial_mouse_pos;
local_delta.y *= -1.0;
for entry in entries {
let key = &mut self.keys[entry.key];
key.position = entry.initial_position + local_delta;
}
}
OperationContext::MoveView {
initial_mouse_pos,
initial_view_pos,
} => {
let delta = (pos - initial_mouse_pos).scale(1.0 / self.zoom);
self.view_position = initial_view_pos + delta;
self.update_matrices();
}
OperationContext::DragTangent { .. } => {}
OperationContext::DragTangent { .. } => {
// TODO
}
}
} else if let Some(selection) = self.selection.as_ref() {
if state.left == ButtonState::Pressed {
match selection {
Selection::Keys { keys } => {
self.operation_context = Some(OperationContext::DragKeys {
entries: keys
.iter()
.map(|k| DragEntry {
key: *k,
initial_position: self.keys[*k].position,
})
.collect::<Vec<_>>(),
initial_mouse_pos: local_mouse_pos,
});
}
Selection::LeftTangent { .. } => {
// TODO
}
Selection::RightTangent { .. } => {
// TODO
}
}
}
}
}
WidgetMessage::MouseUp { .. } => {
if let Some(_context) = self.operation_context.take() {
if let Some(context) = self.operation_context.take() {
ui.release_mouse_capture();
match context {
OperationContext::DragKeys { .. } => {
// Commit
}
OperationContext::DragTangent { .. } => { // TODO
}
_ => (),
}
}
}
WidgetMessage::MouseDown { pos, button } => match button {
@@ -216,16 +265,21 @@ impl<M: MessageData, C: Control<M, C>> Control<M, C> for CurveEditor<M, C> {
let picked = self.pick(*pos);
if let Some(picked) = picked {
if ui.keyboard_modifiers().control {
if let Some(selection) = self.selection.as_mut() {
match selection {
Selection::Keys { keys } => {
if let Some(selection) = self.selection.as_mut() {
match selection {
Selection::Keys { keys } => {
if ui.keyboard_modifiers().control {
keys.insert(picked);
} else {
if !keys.contains(&picked) {
self.selection =
Some(Selection::single_key(picked));
}
}
Selection::LeftTangent { .. }
| Selection::RightTangent { .. } => {
self.selection = Some(Selection::single_key(picked))
}
}
Selection::LeftTangent { .. }
| Selection::RightTangent { .. } => {
self.selection = Some(Selection::single_key(picked))
}
}
} else {