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client/notes: add scaling notes with shift key

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rr- 2016-08-05 22:01:51 +02:00
parent 1b62daed9a
commit 9013f15c1a
1 changed files with 66 additions and 2 deletions
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68
client/js/controls/post_notes_overlay_control.js
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@ -39,6 +39,18 @@ function _clearEditedNote(hostNode) {
return node !== null;
}
function _getNoteSize(note) {
const min = new Point(Infinity, Infinity);
const max = new Point(-Infinity, -Infinity);
for (let point of note.polygon) {
min.x = Math.min(min.x, point.x);
min.y = Math.min(min.y, point.y);
max.x = Math.max(max.x, point.x);
max.y = Math.max(max.y, point.y);
}
return new Point(max.x - min.x, max.y - min.y);
}
class State {
constructor(control) {
this._control = control;
@ -176,13 +188,18 @@ class SelectedState extends ActiveState {
}
evtNoteMouseDown(e, hoveredNote) {
const mousePoint = this._getPointFromEvent(e);
const mouseScreenPoint = this._getScreenPoint(mousePoint);
if (e.shiftKey) {
this._control._state = new ScalingNoteState(
this._control, this._note, mousePoint);
return;
}
if (this._note !== hoveredNote) {
this._control._state =
new SelectedState(this._control, hoveredNote);
return;
}
const mousePoint = this._getPointFromEvent(e);
const mouseScreenPoint = this._getScreenPoint(mousePoint);
this._clickTimeout = window.setTimeout(() => {
for (let polygonPoint of this._note.polygon) {
const distance = _getDistance(
@ -214,6 +231,11 @@ class SelectedState extends ActiveState {
evtCanvasMouseDown(e) {
const mousePoint = this._getPointFromEvent(e);
const mouseScreenPoint = this._getScreenPoint(mousePoint);
if (e.shiftKey) {
this._control._state = new ScalingNoteState(
this._control, this._note, mousePoint);
return;
}
for (let polygonPoint of this._note.polygon) {
const distance = _getDistance(
mouseScreenPoint,
@ -323,6 +345,48 @@ class MovingNoteState extends ActiveState {
}
}
class ScalingNoteState extends ActiveState {
constructor(control, note, mousePoint) {
super(control, note);
this._originalPolygon = [...note.polygon].map(
point => ({x: point.x, y: point.y}));
this._originalMousePoint = mousePoint;
this._originalSize = _getNoteSize(note);
}
evtCanvasKeyDown(e) {
if (e.which == KEY_ESCAPE) {
for (let i of misc.range(this._note.polygon.length)) {
this._note.polygon.at(i).x = this._originalPolygon[i].x;
this._note.polygon.at(i).y = this._originalPolygon[i].y;
}
this._control._state = new SelectedState(this._control, this._note);
}
}
evtCanvasMouseMove(e) {
const mousePoint = this._getPointFromEvent(e);
const originalMousePoint = this._originalMousePoint;
const originalSize = this._originalSize;
for (let i of misc.range(this._note.polygon.length)) {
const polygonPoint = this._note.polygon.at(i);
const originalPolygonPoint = this._originalPolygon[i];
polygonPoint.x =
originalMousePoint.x +
(originalPolygonPoint.x - originalMousePoint.x) *
(1 + (mousePoint.x - originalMousePoint.x) / originalSize.x);
polygonPoint.y =
originalMousePoint.y +
(originalPolygonPoint.y - originalMousePoint.y) *
(1 + (mousePoint.y - originalMousePoint.y) / originalSize.y);
}
}
evtCanvasMouseUp(e) {
this._control._state = new SelectedState(this._control, this._note);
}
}
class ReadyToDrawState extends ActiveState {
constructor(control) {
super(control);