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DrawOnYourScreen
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make smooth transformations undoable/redoable

This commit is contained in:
abakkk 2020-10-04 20:55:06 +02:00
parent e218819edd
commit ccf928c048
1 changed files with 23 additions and 6 deletions
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29
elements.js
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@ -31,7 +31,7 @@ const Me = imports.misc.extensionUtils.getCurrentExtension();
const UUID = Me.uuid.replace(/@/gi, '_at_').replace(/[^a-z0-9+_-]/gi, '_');
var Shapes = { NONE: 0, LINE: 1, ELLIPSE: 2, RECTANGLE: 3, TEXT: 4, POLYGON: 5, POLYLINE: 6, IMAGE: 7 };
var Transformations = { TRANSLATION: 0, ROTATION: 1, SCALE_PRESERVE: 2, STRETCH: 3, REFLECTION: 4, INVERSION: 5 };
var Transformations = { TRANSLATION: 0, ROTATION: 1, SCALE_PRESERVE: 2, STRETCH: 3, REFLECTION: 4, INVERSION: 5, SMOOTH: 100 };
var getAllFontFamilies = function() {
return PangoCairo.font_map_get_default().list_families().map(fontFamily => fontFamily.get_name()).sort((a,b) => a.localeCompare(b));
@ -123,7 +123,7 @@ const _DrawingElement = new Lang.Class({
fill: this.fill,
fillRule: this.fillRule,
eraser: this.eraser,
transformations: this.transformations,
transformations: this.transformations.filter(transformation => transformation.type != Transformations.SMOOTH),
points: this.points.map((point) => [Math.round(point[0]*100)/100, Math.round(point[1]*100)/100])
};
},
@ -402,9 +402,16 @@ const _DrawingElement = new Lang.Class({
},
smoothAll: function() {
for (let i = 0; i < this.points.length; i++) {
let oldPoints = this.points.slice();
for (let i = 0; i < this.points.length; i++)
this._smooth(i);
}
let newPoints = this.points.slice();
this.transformations.push({ type: Transformations.SMOOTH,
undo: () => this.points = oldPoints,
redo: () => this.points = newPoints });
},
addPoint: function() {
@ -594,7 +601,12 @@ const _DrawingElement = new Lang.Class({
if (!this._undoneTransformations)
this._undoneTransformations = [];
this._undoneTransformations.push(this.transformations.pop());
let transformation = this.transformations.pop();
if (transformation.type == Transformations.SMOOTH)
transformation.undo();
this._undoneTransformations.push(transformation);
return true;
}
@ -606,7 +618,12 @@ const _DrawingElement = new Lang.Class({
if (this._undoneTransformations && this._undoneTransformations.length) {
if (!this.transformations)
this.transformations = [];
this.transformations.push(this._undoneTransformations.pop());
let transformation = this._undoneTransformations.pop();
if (transformation.type == Transformations.SMOOTH)
transformation.redo();
this.transformations.push(transformation);
return true;
}