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Fixed history for canvas edits

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unsettledgames
2020-06-23 23:29:13 +02:00
parent 927be7c310
commit 8201099ad5
3 changed files with 17 additions and 14 deletions
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24
js/_history.js
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@@ -33,23 +33,31 @@ function HistoryStateAddLayer() {
//prototype for undoing canvas changes
function HistoryStateEditCanvas () {
this.canvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
this.canvasState = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
this.layerID = currentLayer.id;
this.undo = function () {
var currentCanvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
currentLayer.context.putImageData(this.canvas, 0, 0);
console.log("id: " + this.layerID);
this.canvas = currentCanvas;
var stateLayer = getLayerByID(this.layerID);
var currentCanvas = stateLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
stateLayer.context.putImageData(this.canvasState, 0, 0);
this.canvasState = currentCanvas;
redoStates.push(this);
currentLayer.updateLayerPreview();
stateLayer.updateLayerPreview();
};
this.redo = function () {
var currentCanvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
currentLayer.context.putImageData(this.canvas, 0, 0);
console.log("id: " + this.layerID);
this.canvas = currentCanvas;
var stateLayer = getLayerByID(this.layerID);
var currentCanvas = stateLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
stateLayer.context.putImageData(this.canvasState, 0, 0);
this.canvasState = currentCanvas;
undoStates.push(this);
currentLayer.updateLayerPreview();