Add plumbing for event system (#52)

* Add plumbing for event system

* Apply review suggestions

* Add swap and reset color functions
This commit is contained in:
T0mstone 2021-03-28 23:39:33 +02:00 committed by Keavon Chambers
parent f8ac13c3f2
commit 5c13279d91
9 changed files with 352 additions and 210 deletions

33
Cargo.lock generated
View File

@ -1,5 +1,17 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
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@ -35,11 +47,17 @@ version = "0.1.0"
[[package]]
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dependencies = [
"kurbo",
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]
[[package]]
name = "graphite-editor-core"
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dependencies = [
"bitflags",
"graphite-document-core",
"log",
]
@ -66,6 +84,15 @@ dependencies = [
"wasm-bindgen",
]
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"arrayvec",
]
[[package]]
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@ -105,6 +132,12 @@ version = "1.0.0"
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[[package]]
name = "syn"
version = "1.0.64"

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@ -605,6 +605,95 @@
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@ -5386,95 +5475,6 @@
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@ -12,7 +12,12 @@
</LayoutRow>
<LayoutRow :class="'tools-and-viewport'">
<LayoutCol :class="'tools'"></LayoutCol>
<LayoutCol :class="'viewport-container'" @click="canvasClick"></LayoutCol>
<LayoutCol
:class="'canvas'"
@mousedown="canvasMouseDown"
@mouseup="canvasMouseUp"
@mousemove="canvasMouseMove"
></LayoutCol>
</LayoutRow>
</LayoutCol>
</template>
@ -57,7 +62,7 @@
flex: 0 0 32px;
}
.viewport-container {
.canvas {
background: #111;
flex: 1 1 100%;
}
@ -78,11 +83,21 @@ export default defineComponent({
LayoutCol,
},
methods: {
async canvasClick(e: MouseEvent) {
console.log(e);
const { on_mouse_click } = await wasm;
on_mouse_click(e.offsetX, e.offsetY);
}
async canvasMouseDown(e: MouseEvent) {
console.log(e);
const { on_mouse_down } = await wasm;
on_mouse_down(e.offsetX, e.offsetY, e.buttons);
},
async canvasMouseUp(e: MouseEvent) {
console.log(e);
const { on_mouse_up } = await wasm;
on_mouse_up(e.offsetX, e.offsetY, e.buttons);
},
async canvasMouseMove(e: MouseEvent) {
console.log(e);
const { on_mouse_move } = await wasm;
on_mouse_move(e.offsetX, e.offsetY);
},
},
});
</script>

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@ -8,51 +8,68 @@ use wasm_bindgen::prelude::*;
#[wasm_bindgen]
pub fn select_tool(tool: String) -> Result<(), JsValue> {
EDITOR_STATE.with(|editor| match translate_tool(&tool) {
Some(tool) => {
editor.borrow_mut().tools.active_tool = tool;
Ok(())
}
Some(tool) => editor.borrow_mut().handle_event(events::Event::SelectTool(tool)).map_err(|err| Error::new(&err.to_string()).into()),
None => Err(Error::new(&format!("Couldn't select {} because it was not recognized as a valid tool", tool)).into()),
})
}
/// Mouse movement with the bounds of the canvas
#[wasm_bindgen]
pub fn on_mouse_move(x: u32, y: u32) {
EDITOR_STATE.with(|editor| {
let mut editor = editor.borrow_mut();
if editor.tools.mouse_is_clicked {
editor.tools.trace.append_point(x, y)
}
})
pub fn on_mouse_move(x: u32, y: u32) -> Result<(), JsValue> {
let ev = events::Event::MouseMovement(events::CanvasPosition { x, y });
EDITOR_STATE.with(|editor| editor.borrow_mut().handle_event(ev)).map_err(|err| Error::new(&err.to_string()).into())
}
/// Mouse click within the bounds of the canvas
#[wasm_bindgen]
pub fn on_mouse_click(x: u32, y: u32) -> Result<(), JsValue> {
let ev = events::Event::Click(events::MouseState::from_pos(x, y));
EDITOR_STATE
.with(|editor| {
let mut editor = editor.borrow_mut();
editor.tools.mouse_is_clicked = true;
editor.tools.trace.clear();
editor.handle_event(ev)
})
.map_err(|err| Error::new(&err.to_string()).into())
pub fn on_mouse_down(x: u32, y: u32, mouse_keys: u8) -> Result<(), JsValue> {
let mouse_keys = events::MouseKeys::from_bits(mouse_keys).expect("invalid modifier keys");
let ev = events::Event::MouseDown(events::MouseState {
position: events::CanvasPosition { x, y },
mouse_keys,
});
EDITOR_STATE.with(|editor| editor.borrow_mut().handle_event(ev)).map_err(|err| Error::new(&err.to_string()).into())
}
/// Mouse released
#[wasm_bindgen]
pub fn on_mouse_release() {
EDITOR_STATE.with(|editor| editor.borrow_mut().tools.mouse_is_clicked = false)
pub fn on_mouse_up(x: u32, y: u32, mouse_keys: u8) -> Result<(), JsValue> {
let mouse_keys = events::MouseKeys::from_bits(mouse_keys).expect("invalid modifier keys");
let ev = events::Event::MouseDown(events::MouseState {
position: events::CanvasPosition { x, y },
mouse_keys,
});
EDITOR_STATE.with(|editor| editor.borrow_mut().handle_event(ev)).map_err(|err| Error::new(&err.to_string()).into())
}
/// Update working colors
/// Update primary color
#[wasm_bindgen]
pub fn update_colors(primary_color: Color, secondary_color: Color) {
EDITOR_STATE.with(|editor| {
let mut editor = editor.borrow_mut();
editor.tools.primary_color = primary_color.inner();
editor.tools.secondary_color = secondary_color.inner();
})
pub fn update_primary_color(primary_color: Color) -> Result<(), JsValue> {
EDITOR_STATE
.with(|editor| editor.borrow_mut().handle_event(events::Event::SelectPrimaryColor(primary_color.inner())))
.map_err(|err: editor_core::EditorError| Error::new(&err.to_string()).into())
}
/// Update secondary color
#[wasm_bindgen]
pub fn update_secondary_color(secondary_color: Color) -> Result<(), JsValue> {
EDITOR_STATE
.with(|editor| editor.borrow_mut().handle_event(events::Event::SelectSecondaryColor(secondary_color.inner())))
.map_err(|err: editor_core::EditorError| Error::new(&err.to_string()).into())
}
/// Swap primary and secondary color
#[wasm_bindgen]
pub fn swap_colors() -> Result<(), JsValue> {
EDITOR_STATE
.with(|editor| editor.borrow_mut().handle_event(events::Event::SwapColors))
.map_err(|err: editor_core::EditorError| Error::new(&err.to_string()).into())
}
/// Reset primary and secondary colors to their defaults
#[wasm_bindgen]
pub fn reset_colors() -> Result<(), JsValue> {
EDITOR_STATE
.with(|editor| editor.borrow_mut().handle_event(events::Event::ResetColors))
.map_err(|err: editor_core::EditorError| Error::new(&err.to_string()).into())
}

View File

@ -10,3 +10,8 @@ license = "Apache-2.0"
[dependencies]
log = "0.4"
bitflags = "1.2.1"
[dependencies.document-core]
path = "../document"
package = "graphite-document-core"

View File

@ -1,12 +1,21 @@
use crate::tools::ToolType;
use crate::Color;
use bitflags::bitflags;
use std::ops::{Deref, DerefMut};
#[derive(Debug, Clone)]
#[repr(C)]
pub enum Event {
SelectTool(ToolType),
ModifierKeyDown(ModKey),
ModifierKeyUp(ModKey),
MouseMovement(Trace),
Click(MouseState),
SelectPrimaryColor(Color),
SelectSecondaryColor(Color),
SwapColors,
ResetColors,
MouseDown(MouseState),
MouseUp(MouseState),
MouseMovement(CanvasPosition),
ModifierKeyDown(ModKeys),
ModifierKeyUp(ModKeys),
KeyPress(Key),
}
@ -17,92 +26,81 @@ pub enum Response {
}
#[derive(Debug, Clone, Default)]
pub struct Trace(Vec<MouseState>);
pub struct Trace(Vec<TracePoint>);
impl Deref for Trace {
type Target = Vec<TracePoint>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for Trace {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
impl Trace {
pub fn new() -> Self {
Self::default()
}
pub fn first_point(&self) -> Option<&MouseState> {
self.0.first()
}
pub fn last_point(&self) -> Option<&MouseState> {
self.0.last()
}
pub fn append_point(&mut self, x: u32, y: u32) {
self.0.push(MouseState::from_pos(x, y))
}
pub fn clear(&mut self) {
self.0.clear()
}
}
#[derive(Debug, Clone, Default)]
// origin is top left
#[derive(Debug, Copy, Clone, Default, Eq, PartialEq)]
pub struct CanvasPosition {
pub x: u32,
pub y: u32,
}
#[derive(Debug, Copy, Clone, Default, Eq, PartialEq)]
pub struct TracePoint {
pub mouse_state: MouseState,
pub mod_keys: ModKeys,
}
#[derive(Debug, Copy, Clone, Default, Eq, PartialEq)]
pub struct MouseState {
x: u32,
y: u32,
mod_keys: ModKeysStorage,
mouse_keys: MouseKeysStorage,
pub position: CanvasPosition,
pub mouse_keys: MouseKeys,
}
impl MouseState {
pub const fn new() -> MouseState {
pub fn new() -> MouseState {
Self::default()
}
pub fn from_pos(x: u32, y: u32) -> MouseState {
MouseState {
x: 0,
y: 0,
mod_keys: 0,
mouse_keys: 0,
position: CanvasPosition { x, y },
mouse_keys: MouseKeys::default(),
}
}
pub const fn from_pos(x: u32, y: u32) -> MouseState {
MouseState { x, y, mod_keys: 0, mouse_keys: 0 }
}
}
#[derive(Debug, Clone)]
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub enum Key {
None,
UnknownKey,
}
pub type ModKeysStorage = u8;
pub type MouseKeysStorage = u8;
#[derive(Debug, Clone, Copy)]
#[repr(transparent)]
pub struct ModKeys(ModKeysStorage);
impl ModKeys {
pub fn get_key(&self, key: ModKey) -> bool {
key as ModKeysStorage & self.0 > 0
}
pub fn set_key(&mut self, key: ModKey) {
self.0 |= key as ModKeysStorage
bitflags! {
#[derive(Default)]
#[repr(transparent)]
pub struct ModKeys: u8 {
const CONTROL = 0b0000_0001;
const SHIFT = 0b0000_0010;
const ALT = 0b0000_0100;
}
}
#[derive(Debug, Clone, Copy)]
#[repr(transparent)]
struct MouseKeys(u8);
impl MouseKeys {
pub fn get_key(&self, key: MouseKey) -> bool {
key as ModKeysStorage & self.0 > 0
}
pub fn set_key(&mut self, key: MouseKey) {
self.0 |= key as MouseKeysStorage
bitflags! {
#[derive(Default)]
#[repr(transparent)]
pub struct MouseKeys: u8 {
const LEFT = 0b0000_0001;
const RIGHT = 0b0000_0010;
const MIDDLE = 0b0000_0100;
}
}
#[repr(u8)]
#[derive(Debug, Clone)]
pub enum ModKey {
Control = 1,
Shift = 2,
Alt = 4,
}
#[repr(u8)]
#[derive(Debug, Clone)]
pub enum MouseKey {
LeftMouse = 1,
RightMouse = 2,
MiddleMouse = 4,
}

View File

@ -1,5 +1,6 @@
pub mod events;
use crate::EditorError;
use crate::tools::ToolState;
use crate::{Color, EditorError};
use events::{Event, Response};
pub type Callback = Box<dyn Fn(Response)>;
@ -8,10 +9,63 @@ pub struct Dispatcher {
}
impl Dispatcher {
pub fn handle_event(&self, event: Event) -> Result<(), EditorError> {
pub fn handle_event(&self, tool_state: &mut ToolState, event: Event) -> Result<(), EditorError> {
match event {
Event::Click(_) => Ok(self.emit_response(Response::UpdateCanvas)),
_ => todo!(),
Event::SelectTool(tool_type) => {
tool_state.active_tool = tool_type;
Ok(())
}
Event::SelectPrimaryColor(color) => {
tool_state.primary_color = color;
Ok(())
}
Event::SelectSecondaryColor(color) => {
tool_state.secondary_color = color;
Ok(())
}
Event::SwapColors => {
std::mem::swap(&mut tool_state.primary_color, &mut tool_state.secondary_color);
Ok(())
}
Event::ResetColors => {
tool_state.primary_color = Color::BLACK;
tool_state.secondary_color = Color::WHITE;
Ok(())
}
Event::MouseDown(mouse_state) => {
tool_state.mouse_state = mouse_state;
// the state has changed so we add a trace point
tool_state.record_trace_point();
self.emit_response(Response::UpdateCanvas);
Ok(())
}
Event::MouseUp(mouse_state) => {
tool_state.mouse_state = mouse_state;
// the state has changed so we add a trace point
tool_state.record_trace_point();
self.emit_response(Response::UpdateCanvas);
Ok(())
}
Event::MouseMovement(pos) => {
tool_state.mouse_state.position = pos;
tool_state.record_trace_point();
Ok(())
}
Event::ModifierKeyDown(mod_keys) => {
tool_state.mod_keys = mod_keys;
// the state has changed so we add a trace point
tool_state.record_trace_point();
Ok(())
}
Event::ModifierKeyUp(mod_keys) => {
tool_state.mod_keys = mod_keys;
// the state has changed so we add a trace point
tool_state.record_trace_point();
Ok(())
}
Event::KeyPress(key) => todo!(),
}
}
pub fn emit_response(&self, response: Response) {

View File

@ -22,7 +22,7 @@ use workspace::Workspace;
// TODO: serialize with serde to save the current editor state
pub struct Editor {
pub tools: ToolState,
tools: ToolState,
workspace: Workspace,
dispatcher: Dispatcher,
}
@ -36,6 +36,6 @@ impl Editor {
}
}
pub fn handle_event(&mut self, event: events::Event) -> Result<(), EditorError> {
self.dispatcher.handle_event(event)
self.dispatcher.handle_event(&mut self.tools, event)
}
}

View File

@ -1,8 +1,10 @@
use crate::events::{ModKeys, MouseState, TracePoint};
use crate::{events::Trace, Color};
use std::collections::HashMap;
pub struct ToolState {
pub mouse_is_clicked: bool,
pub mouse_state: MouseState,
pub mod_keys: ModKeys,
pub trace: Trace,
pub primary_color: Color,
pub secondary_color: Color,
@ -10,10 +12,11 @@ pub struct ToolState {
tool_settings: HashMap<ToolType, ToolSettings>,
}
impl ToolState {
pub fn new() -> Self {
impl Default for ToolState {
fn default() -> Self {
ToolState {
mouse_is_clicked: false,
mouse_state: MouseState::default(),
mod_keys: ModKeys::default(),
trace: Trace::new(),
primary_color: Color::BLACK,
secondary_color: Color::WHITE,
@ -23,14 +26,29 @@ impl ToolState {
}
}
impl ToolState {
pub fn new() -> Self {
Self::default()
}
pub fn record_trace_point(&mut self) {
self.trace.push(TracePoint {
mouse_state: self.mouse_state,
mod_keys: self.mod_keys,
})
}
}
fn default_tool_settings() -> HashMap<ToolType, ToolSettings> {
let tool_init = |tool: &ToolType| (*tool, tool.default_settings());
// TODO: when 1.51 is more common, change this to use array::IntoIter
[
tool_init(&ToolType::Select),
tool_init(&ToolType::Ellipse),
tool_init(&ToolType::Shape), // TODO: Add more tool defaults
]
.iter()
.cloned()
.copied()
.collect()
}
@ -54,6 +72,7 @@ impl ToolType {
fn default_settings(&self) -> ToolSettings {
match self {
ToolType::Select => ToolSettings::Select { append_mode: SelectAppendMode::New },
ToolType::Ellipse => ToolSettings::Ellipse,
ToolType::Shape => ToolSettings::Shape {
shape: Shape::Polygon { vertices: 3 },
},
@ -62,13 +81,14 @@ impl ToolType {
}
}
#[derive(Debug, Clone, Copy)]
#[derive(Debug, Clone, Copy, Eq, PartialEq)]
pub enum ToolSettings {
Select { append_mode: SelectAppendMode },
Ellipse,
Shape { shape: Shape },
}
#[derive(Debug, Clone, Copy)]
#[derive(Debug, Clone, Copy, Eq, PartialEq)]
pub enum SelectAppendMode {
New,
Add,
@ -76,7 +96,7 @@ pub enum SelectAppendMode {
Intersect,
}
#[derive(Debug, Clone, Copy)]
#[derive(Debug, Clone, Copy, Eq, PartialEq)]
pub enum Shape {
Star { vertices: u32 },
Polygon { vertices: u32 },