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import React from "react";
import {Group, Layer, Stage} from "react-konva";
import {Shortcuts} from "react-shortcuts";
import DatacenterContainer from "../../containers/map/DatacenterContainer";
import ObjectHoverLayer from "../../containers/map/layers/ObjectHoverLayer";
import RoomHoverLayer from "../../containers/map/layers/RoomHoverLayer";
import jQuery from "../../util/jquery";
import {NAVBAR_HEIGHT} from "../navigation/Navbar";
import Backdrop from "./elements/Backdrop";
import GridGroup from "./groups/GridGroup";
import {
MAP_MAX_SCALE,
MAP_MIN_SCALE,
MAP_MOVE_PIXELS_PER_EVENT,
MAP_SCALE_PER_EVENT,
MAP_SIZE_IN_PIXELS
} from "./MapConstants";
class MapStage extends React.Component {
state = {
width: 600,
height: 400,
x: 0,
y: 0,
scale: 1,
mouseX: 0,
mouseY: 0
};
componentWillMount() {
this.updateDimensions();
}
componentDidMount() {
window.addEventListener("resize", this.updateDimensions.bind(this));
window.addEventListener("wheel", this.updateScale.bind(this));
}
componentWillUnmount() {
window.removeEventListener("resize", this.updateDimensions.bind(this));
window.removeEventListener("wheel", this.updateScale.bind(this));
}
updateDimensions() {
this.setState({width: jQuery(window).width(), height: jQuery(window).height() - NAVBAR_HEIGHT});
}
updateScale(e) {
e.preventDefault();
const mousePointsTo = {
x: this.state.mouseX / this.state.scale - this.state.x / this.state.scale,
y: this.state.mouseY / this.state.scale - this.state.y / this.state.scale,
};
const newScale = e.deltaY < 0 ? this.state.scale * MAP_SCALE_PER_EVENT : this.state.scale / MAP_SCALE_PER_EVENT;
const boundedScale = Math.min(Math.max(MAP_MIN_SCALE, newScale), MAP_MAX_SCALE);
const newX = -(mousePointsTo.x - this.state.mouseX / boundedScale) * boundedScale;
const newY = -(mousePointsTo.y - this.state.mouseY / boundedScale) * boundedScale;
this.setPositionWithBoundsCheck(newX, newY);
this.setState({scale: boundedScale});
}
updateMousePosition() {
const mousePos = this.stage.getStage().getPointerPosition();
this.setState({mouseX: mousePos.x, mouseY: mousePos.y});
}
handleShortcuts(action) {
switch (action) {
case "MOVE_LEFT":
this.moveWithDelta(MAP_MOVE_PIXELS_PER_EVENT, 0);
break;
case "MOVE_RIGHT":
this.moveWithDelta(-MAP_MOVE_PIXELS_PER_EVENT, 0);
break;
case "MOVE_UP":
this.moveWithDelta(0, MAP_MOVE_PIXELS_PER_EVENT);
break;
case "MOVE_DOWN":
this.moveWithDelta(0, -MAP_MOVE_PIXELS_PER_EVENT);
break;
default:
break;
}
}
moveWithDelta(deltaX, deltaY) {
this.setPositionWithBoundsCheck(this.state.x + deltaX, this.state.y + deltaY);
}
setPositionWithBoundsCheck(newX, newY) {
const scaledMapSize = MAP_SIZE_IN_PIXELS * this.state.scale;
const updatedPosition = {
x: newX > 0 ? 0 :
(newX < -scaledMapSize + this.state.width ? -scaledMapSize + this.state.width : newX),
y: newY > 0 ? 0 :
(newY < -scaledMapSize + this.state.height ? -scaledMapSize + this.state.height : newY)
};
this.setState(updatedPosition);
}
render() {
return (
<Shortcuts name="MAP" handler={this.handleShortcuts.bind(this)} targetNodeSelector="body">
<Stage
ref={(stage) => {this.stage = stage;}}
width={this.state.width}
height={this.state.height}
onMouseMove={this.updateMousePosition.bind(this)}
>
<Layer>
<Group x={this.state.x} y={this.state.y} scaleX={this.state.scale} scaleY={this.state.scale}>
<Backdrop/>
<DatacenterContainer/>
<GridGroup/>
</Group>
</Layer>
<RoomHoverLayer
mainGroupX={this.state.x}
mainGroupY={this.state.y}
mouseX={this.state.mouseX}
mouseY={this.state.mouseY}
scale={this.state.scale}
/>
<ObjectHoverLayer
mainGroupX={this.state.x}
mainGroupY={this.state.y}
mouseX={this.state.mouseX}
mouseY={this.state.mouseY}
scale={this.state.scale}
/>
</Stage>
</Shortcuts>
)
}
}
export default MapStage;
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