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undo and redo, Hotkeys support

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This commit is contained in:
Neil Graham
2023-09-26 12:02:44 +13:00
parent 8d7ba536ed
commit 7f095ee3a0
3 changed files with 148 additions and 17 deletions
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web/page/bspaint.js
+138 -13
View File
@@ -7,6 +7,8 @@ if (location.pathname.includes("/page/")) {
$(initPaint);
}
var hotkeys = {};
var initialPalette = [
"#000000","#ffffff",
"#202020","#404040",
@@ -194,7 +196,9 @@ function createDrawArea(canvas = blankCanvas()) {
eventOverlay.addEventListener("contextmenu",function(e){e.preventDefault(); return false;});
const result = {element,eventOverlay,image,layers,canvas,mask,
const result = {element,eventOverlay,image,mask,
get layers() {return layers},
get canvas() {return canvas},
scale:1,
scalefactor:0,
offsetX:0,
@@ -208,9 +212,6 @@ function createDrawArea(canvas = blankCanvas()) {
element.style.setProperty("--scalefactor",scale)
element.style.setProperty("--translateX",offsetX+"px")
element.style.setProperty("--translateY",offsetY+"px")
//var trans =`translate(${offsetX}px,${offsetY}px) scale(${scale},${scale})`;
//$(element).css("transform",trans);
},
bringToFront() {
const oldPos = picStack.indexOf(this);
@@ -247,6 +248,7 @@ function createDrawArea(canvas = blankCanvas()) {
commit() {
let data = activeOperationCanvas.ctx.getAllImageData()
const undoRecord = {
type : "layer",
layer: this.activeLayer,
data: this.activeLayer.ctx.getAllImageData()
}
@@ -275,6 +277,11 @@ function createDrawArea(canvas = blankCanvas()) {
activeOperationCanvas.ctx.clearRect(0,0,activeOperationCanvas.width,activeOperationCanvas.height);
this.commit();
},
fillLayer(color = "#fff") {
activeOperationCanvas.ctx.fillStyle=color;
activeOperationCanvas.ctx.fillRect(0,0,activeOperationCanvas.width,activeOperationCanvas.height);
this.commit();
},
updateVisualRepresentation(transmit=false) {
if (transmit && this===selectedExport) {
this.composite(true); //suppress mask for transmitted canvas
@@ -286,8 +293,6 @@ function createDrawArea(canvas = blankCanvas()) {
startDraw(x,y) {
if (!this.activeLayer.visible) return; //don't draw on hidden layers.
this.strokeModifier=mirrorFunction;
//let data = this.activeLayer.ctx.getAllImageData()
//activeOperationCanvas.ctx.putImageData(data,0,0);
this.isDrawing=true;
this.strokeCoordinates=[{x:x+0.001,y}];
tip.x=x;
@@ -307,7 +312,6 @@ function createDrawArea(canvas = blankCanvas()) {
draw(x,y) {
this.strokeCoordinates.push({x,y});
//This is done in a timeout to allow multiple draw movements
//to accumulate rather than slowing things down
if (!updatingStroke) {
@@ -336,6 +340,17 @@ function createDrawArea(canvas = blankCanvas()) {
},1)
}
},
updateLayerList(newList) {
const undoRecord = {
type: 'layerList',
previousList: [...layers]
};
undoStack.push(undoRecord);
if (undoStack.length > undoDepth) undoStack.shift();
layers.length = 0; // Clear the existing array
layers.push(...newList); // Fill with new values
},
/*
removeLayer(layer=this.activeLayer) {
const i = layers.indexOf(layer);
if (i !==-1) {
@@ -363,7 +378,74 @@ function createDrawArea(canvas = blankCanvas()) {
} else {
layers.push(layer);
}
},
*/
addEmptyLayer() {
const newLayer = new Layer("new layer", canvas);
const newList = [...layers, newLayer];
this.updateLayerList(newList);
return newLayer;
},
removeLayer(layer = this.activeLayer) {
const newList = layers.filter(l => l !== layer);
this.updateLayerList(newList);
},
insertLayer(layer, below = null) {
const newList = [...layers];
const indexExisting = newList.indexOf(layer);
if (indexExisting !== -1) {
newList.splice(indexExisting, 1);
}
const indexBelow = newList.indexOf(below);
if (indexBelow !== -1) {
newList.splice(indexBelow, 0, layer);
} else {
newList.push(layer);
}
this.updateLayerList(newList);
},
undo() {
const lastRecord = undoStack.pop();
if (lastRecord) {
if (lastRecord.type === 'layerList') {
redoStack.push({type: 'layerList', previousList: [...layers]});
layers.length = 0;
layers.push(...lastRecord.previousList);
} else if (lastRecord.type === 'layer') {
redoStack.push({
type: 'layer',
layer: lastRecord.layer,
data: lastRecord.layer.ctx.getAllImageData()
});
lastRecord.layer.ctx.putImageData(lastRecord.data, 0, 0);
}
//... (handle other types of undoRecords)
}
this.updateVisualRepresentation(true);
updateLayerList();
},
redo() {
const lastRecord = redoStack.pop();
if (lastRecord) {
if (lastRecord.type === 'layerList') {
undoStack.push({type: 'layerList', previousList: [...layers]});
layers.length = 0;
layers.push(...lastRecord.previousList);
} else if (lastRecord.type === 'layer') {
undoStack.push({
type: 'layer',
layer: lastRecord.layer,
data: lastRecord.layer.ctx.getAllImageData()
});
lastRecord.layer.ctx.putImageData(lastRecord.data, 0, 0);
}
//... (handle other types of redoRecords)
}
this.updateVisualRepresentation(true);
updateLayerList();
},
}
eventOverlay.pic = result;
sidebar.addEventListener("mousedown",_=> setExportPic(result))
@@ -408,15 +490,14 @@ function initPaint(){
c=$("#foreground").val();
$(e.currentTarget).data("colour",c).css("background-color",c)
}
if (e.which == 3 && !eraser) {
if (e.ctrlKey) {
if (e.which == 3 ) {
if (e.ctrlKey && !eraser) {
c=$("#background").val();
$(e.currentTarget).data("colour",c).css("background-color",c)
} else {
$("#background").val(c).data("eraser",eraser);
}
}
}).on("contextmenu",
function(){return false;}
);
@@ -426,11 +507,14 @@ function initPaint(){
$("#pixels").on("click",function(e) {setTool(pixelTip);});
$("#pen").on("click",function(e) {setTool(feltTip); });
$("#clear").on("click",function(e) {activePic.clearLayer()});
$("#eraser").on("click",function(e) { setTool(eraserTip);});
$("#fine_eraser").on("click",function(e) {setTool(pixelClear);});
$("#eyedropper").on("click",function(e) { setTool(eyeDropper);});
$("#clear").on("click",function(e) {activePic?.clearLayer()});
$("#undo").on("click",function(e) {activePic?.undo()});
$("#redo").on("click",function(e) {activePic?.redo()});
$(".tool.button").on("click", function(e) {
$(".tool.button").removeClass("down");
$(e.currentTarget).addClass("down");
@@ -446,6 +530,7 @@ function initPaint(){
});
addEventListener("keydown", handleKeyDown);
$(".panel").append(brushSizeControl).append(`
<div class="subpanel simple_mirrors">
@@ -456,8 +541,8 @@ function initPaint(){
</div>
<div class="subpanel grid_mirrors">
<span style="display:inline-block;">
<input id="repeat_x" type="number" min="2" max="10" value="3" step="1" required />
<input id="repeat_y" type="number" min="2" max="10" value="3" step="1" required />
<input id="repeat_x" type="number" min="1" max="10" value="3" step="1" required />
<input id="repeat_y" type="number" min="1" max="10" value="3" step="1" required />
</span>
<div id="mirror_grid" class="mirror button"></div>
</div>
@@ -520,6 +605,27 @@ function addNewLayer(image) {
}
}
function handleKeyDown(e) {
if (!e.key) return;
if (e.key === "Dead" ) return;
if (e.key === "Unidentified" ) return;
//checking for hotkeys
let keyID = "";
if (e.ctrlKey) keyID+="CTRL_"
if (e.altKey) keyID+="ALT_"
if (e.shiftKey) keyID+="SHIFT_"
let key = e.key.toUpperCase();
if (key === " ") key = 'SPACE';
const hotkeyCode= keyID+key;
console.log({hotkeyCode})
if (hotkeys.hasOwnProperty(hotkeyCode)) {
hotkeys[hotkeyCode]();
}
}
function handleMouseDown(e) {
//console.log("mousedown on pic",e);
let pic = e.currentTarget.pic;
@@ -1135,3 +1241,22 @@ function createCaptureOverlay(element) {
function removeCaptureOverlay() {
$('#global_overlay').remove();
}
function fillOrClear(from) {
if (from.data("eraser")){
activePic?.clearLayer()
} else {
activePic?.fillLayer(from.val());
}
}
hotkeys["CTRL_Z"] = _=>{activePic?.undo()}
hotkeys["CTRL_SHIFT_Z"] = _=>{activePic?.redo()}
hotkeys["BACKSPACE"] = _=>{activePic?.clearLayer()}
hotkeys["ALT_BACKSPACE"] = _=>{fillOrClear($("#foreground"))}
hotkeys["CTRL_BACKSPACE"] = _=>{fillOrClear($("#background"))}
web/page/index.html
+2
View File
@@ -27,10 +27,12 @@
<div id="pixels" class="tool button" style="background-image:url(images/pixels.png);"></div>
<div id="fine_eraser" class="tool button" style="background-image:url(images/fine_eraser.png);"></div>
<div id="eyedropper" class="tool button" ></div>
<div class="subpanel actions">
<div id="clear" class="tool button" ></div>
<div id="undo" class="tool button" ></div>
<div id="redo" class="tool button" ></div>
</div>
</div>
<div id="palette" class="noselect">
<input id="foreground" type="color" value="#000000">
<input id="background" type="color" value="#ff00ff">
web/page/style.css
+4
View File
@@ -98,6 +98,10 @@ svg.tool.button {
box-sizing:border-box;
}
.subpanel.actions {
position:absolute;
right:0.5em;
}
.subpanel input {
display:block;
}