layers... now exist?

Signed-off-by: Victor Seiji Hariki <victorseijih@gmail.com>

css/ui/layers.css

@@ -0,0 +1,16 @@
+#layer-list {
+	height: 200px;
+}
+
+#layer-list .ui-layer {
+	cursor: pointer;
+	background-color: #fff3;
+}
+
+#layer-list .ui-layer:hover {
+	filter: brightness(90%);
+}
+
+#layer-list .ui-layer:active {
+	filter: brightness(80%);
+}

index.html

@@ -12,6 +12,7 @@
 		<link href="css/ui/generic.css" rel="stylesheet" />
 
 		<link href="css/ui/history.css" rel="stylesheet" />
+		<link href="css/ui/layers.css" rel="stylesheet" />
 		<link href="css/ui/toolbar.css" rel="stylesheet" />
 
 		<!-- Tool Specific CSS -->
@@ -194,11 +195,22 @@
 			</div>
 		</div>
 
+		<!-- Layers -->
+		<div
+			id="ui-layers"
+			class="floating-window"
+			style="right: 10px; bottom: 10px">
+			<div class="draggable floating-window-title">Layers</div>
+			<div class="menu-container" style="min-width: 200px">
+				<div id="layer-list" class="layer-list"></div>
+			</div>
+		</div>
+
 		<!-- Toolbar -->
 		<div
 			id="ui-toolbar"
 			class="floating-window toolbar"
-			style="right: 10px; top: 350px">
+			style="right: 270px; top: 10px">
 			<div class="draggable handle">
 				<span class="line"></span>
 			</div>
@@ -225,6 +237,7 @@
 		<!-- Content -->
 		<script src="js/index.js" type="text/javascript"></script>
 		<script src="js/ui/floating/history.js" type="text/javascript"></script>
+		<script src="js/ui/floating/layers.js" type="text/javascript"></script>
 
 		<!-- Load Tools -->
 		<script src="js/ui/tool/dream.js" type="text/javascript"></script>

js/index.js

@@ -334,8 +334,8 @@ function newImage(evt) {
 	commands.runCommand("eraseImage", "Clear Canvas", {
 		x: 0,
 		y: 0,
-		w: imgCanvas.width,
-		h: imgCanvas.height,
+		w: uiLayers.active.canvas.width,
+		h: uiLayers.active.canvas.height,
 	});
 }
 
@@ -765,7 +765,7 @@ async function upscaleAndDownload() {
 	// get cropped canvas, send it to upscaler, download result
 	var upscale_factor = 2; // TODO: make this a user input 1.x - 4.0 or something
 	var upscaler = document.getElementById("upscalers").value;
-	var croppedCanvas = cropCanvas(imgCanvas);
+	var croppedCanvas = cropCanvas(uiLayers.active.canvas);
 	if (croppedCanvas != null) {
 		var upscaler = document.getElementById("upscalers").value;
 		var url =

js/initalize/layers.populate.js

@@ -52,7 +52,17 @@ const getVisible = (bb) => {
 	canvas.width = bb.w;
 	canvas.height = bb.h;
 	ctx.drawImage(bgLayer.canvas, bb.x, bb.y, bb.w, bb.h, 0, 0, bb.w, bb.h);
-	ctx.drawImage(imgCanvas, bb.x, bb.y, bb.w, bb.h, 0, 0, bb.w, bb.h);
+	ctx.drawImage(
+		uiLayers.active.canvas,
+		bb.x,
+		bb.y,
+		bb.w,
+		bb.h,
+		0,
+		0,
+		bb.w,
+		bb.h
+	);
 
 	return canvas;
 };

js/lib/commands.js

@@ -192,7 +192,7 @@ commands.createCommand(
 
 		// Check if we have state
 		if (!state.context) {
-			const context = options.ctx || imgCtx;
+			const context = options.ctx || uiLayers.active.ctx;
 			state.context = context;
 
 			// Saving what was in the canvas before the command
@@ -252,7 +252,7 @@ commands.createCommand(
 
 		// Check if we have state
 		if (!state.context) {
-			const context = options.ctx || imgCtx;
+			const context = options.ctx || uiLayers.active.ctx;
 			state.context = context;
 
 			// Saving what was in the canvas before the command

js/lib/util.js

@@ -250,14 +250,14 @@ function cropCanvas(sourceCanvas, options = {}) {
  *
  * @param {Object} options - Optional Information
  * @param {boolean} [options.cropToContent] - If we wish to crop to content first (default: true)
- * @param {HTMLCanvasElement} [options.canvas] - The source canvas (default: imgCanvas)
+ * @param {HTMLCanvasElement} [options.canvas] - The source canvas (default: uiLayers.active.canvas)
  * @param {string} [options.filename] - The filename to save as (default: '[ISO date] [Hours] [Minutes] [Seconds] openOutpaint image.png').\
  * If null, opens image in new tab.
  */
 function downloadCanvas(options = {}) {
 	defaultOpt(options, {
 		cropToContent: true,
-		canvas: imgCanvas,
+		canvas: uiLayers.active.canvas,
 		filename:
 			new Date()
 				.toISOString()

js/ui/floating/layers.js

@@ -0,0 +1,56 @@
+/**
+ * The layering UI window
+ */
+
+const uiLayers = {
+	layers: [],
+	active: null,
+
+	_syncLayers() {
+		const layersEl = document.getElementById("layer-list");
+
+		const children = Array.from(layersEl.children);
+
+		this.layers.forEach((uiLayer) => {
+			if (!uiLayer.entry) {
+				uiLayer.entry = document.createElement("div");
+				uiLayer.entry.textContent = uiLayer.name;
+
+				uiLayer.entry.id = `ui-layer-${uiLayer.id}`;
+				uiLayer.entry.classList.add("ui-layer");
+				uiLayer.entry.addEventListener(
+					"click",
+					() => (this.active = uiLayer.layer)
+				);
+
+				if (true || children.length === 0) layersEl.appendChild(uiLayer.entry);
+			}
+		});
+	},
+
+	addLayer(group, name) {
+		const layer = imageCollection.registerLayer(null, {
+			name,
+			after:
+				(this.layers.length > 0 && this.layers[this.layers.length - 1].layer) ||
+				bgLayer,
+		});
+
+		const uiLayer = {
+			id: layer.id,
+			group,
+			name,
+			entry: null,
+			layer,
+		};
+		this.layers.push(uiLayer);
+
+		this.active = uiLayer.layer;
+
+		this._syncLayers();
+
+		return uiLayer;
+	},
+};
+uiLayers.addLayer(null, "Default Image Layer");
+uiLayers.addLayer(null, "Test Extra Layer");

js/ui/tool/colorbrush.js

@@ -271,20 +271,20 @@ const colorBrushTool = () =>
 					const bkpcanvas = state.eraseBackup.canvas;
 					const bkpctx = state.eraseBackup.ctx;
 					bkpctx.clearRect(0, 0, bkpcanvas.width, bkpcanvas.height);
-					bkpctx.drawImage(imgCanvas, 0, 0);
+					bkpctx.drawImage(uiLayers.active.canvas, 0, 0);
 
-					imgCtx.globalCompositeOperation = "destination-out";
-					_color_brush_erase_callback(evn, state, imgCtx);
-					imgCtx.globalCompositeOperation = "source-over";
+					uiLayers.active.ctx.globalCompositeOperation = "destination-out";
+					_color_brush_erase_callback(evn, state, uiLayers.active.ctx);
+					uiLayers.active.ctx.globalCompositeOperation = "source-over";
 					_color_brush_erase_callback(evn, state, state.eraseLayer.ctx);
 				};
 
 				state.erasecb = (evn) => {
 					if (state.eyedropper || !state.erasing) return;
 					if (state.affectMask) _mask_brush_erase_callback(evn, state);
-					imgCtx.globalCompositeOperation = "destination-out";
-					_color_brush_erase_callback(evn, state, imgCtx);
-					imgCtx.globalCompositeOperation = "source-over";
+					uiLayers.active.ctx.globalCompositeOperation = "destination-out";
+					_color_brush_erase_callback(evn, state, uiLayers.active.ctx);
+					uiLayers.active.ctx.globalCompositeOperation = "source-over";
 					_color_brush_erase_callback(evn, state, state.eraseLayer.ctx);
 				};
 
@@ -300,8 +300,13 @@ const colorBrushTool = () =>
 					const cropped = cropCanvas(canvas, {border: 10});
 					const bb = cropped.bb;
 
-					imgCtx.clearRect(0, 0, imgCanvas.width, imgCanvas.height);
-					imgCtx.drawImage(bkpcanvas, 0, 0);
+					uiLayers.active.ctx.clearRect(
+						0,
+						0,
+						uiLayers.active.canvas.width,
+						uiLayers.active.canvas.height
+					);
+					uiLayers.active.ctx.drawImage(bkpcanvas, 0, 0);
 
 					commands.runCommand("eraseImage", "Color Brush Erase", {
 						mask: cropped.canvas,

js/ui/tool/dream.js

@@ -367,7 +367,7 @@ const dream_generate_callback = async (evn, state) => {
 		blockNewImages = true;
 
 		// Use txt2img if canvas is blank
-		if (isCanvasBlank(bb.x, bb.y, bb.w, bb.h, imgCanvas)) {
+		if (isCanvasBlank(bb.x, bb.y, bb.w, bb.h, uiLayers.active.canvas)) {
 			// Dream
 			_generate("txt2img", request, bb);
 		} else {
@@ -384,7 +384,7 @@ const dream_generate_callback = async (evn, state) => {
 			// Get init image
 			auxCtx.fillRect(0, 0, request.width, request.height);
 			auxCtx.drawImage(
-				imgCanvas,
+				uiLayers.active.canvas,
 				bb.x,
 				bb.y,
 				bb.w,
@@ -417,7 +417,7 @@ const dream_generate_callback = async (evn, state) => {
 
 				auxCtx.globalCompositeOperation = "destination-in";
 				auxCtx.drawImage(
-					imgCanvas,
+					uiLayers.active.canvas,
 					bb.x,
 					bb.y,
 					bb.w,
@@ -430,7 +430,7 @@ const dream_generate_callback = async (evn, state) => {
 			} else {
 				auxCtx.globalCompositeOperation = "destination-in";
 				auxCtx.drawImage(
-					imgCanvas,
+					uiLayers.active.canvas,
 					bb.x,
 					bb.y,
 					bb.w,
@@ -536,7 +536,7 @@ const dream_img2img_callback = (evn, state) => {
 		);
 
 		// Do nothing if no image exists
-		if (isCanvasBlank(bb.x, bb.y, bb.w, bb.h, imgCanvas)) return;
+		if (isCanvasBlank(bb.x, bb.y, bb.w, bb.h, uiLayers.active.canvas)) return;
 
 		// Build request to the API
 		const request = {};
@@ -565,7 +565,7 @@ const dream_img2img_callback = (evn, state) => {
 		// Get init image
 		auxCtx.fillRect(0, 0, request.width, request.height);
 		auxCtx.drawImage(
-			imgCanvas,
+			uiLayers.active.canvas,
 			bb.x,
 			bb.y,
 			bb.w,

js/ui/tool/select.js

@@ -84,7 +84,7 @@ const selectTransformTool = () =>
 				// Clears selection and make things right
 				state.reset = () => {
 					if (state.selected)
-						imgCtx.drawImage(
+						uiLayers.active.ctx.drawImage(
 							state.original.image,
 							state.original.x,
 							state.original.y
@@ -312,7 +312,7 @@ const selectTransformTool = () =>
 
 					// If something is selected, commit changes to the canvas
 					if (state.selected) {
-						imgCtx.drawImage(
+						uiLayers.active.ctx.drawImage(
 							state.selected.image,
 							state.original.x,
 							state.original.y
@@ -406,7 +406,7 @@ const selectTransformTool = () =>
 						const ctx = cvs.getContext("2d");
 
 						ctx.drawImage(
-							imgCanvas,
+							uiLayers.active.canvas,
 							state.selected.x,
 							state.selected.y,
 							state.selected.w,
@@ -417,7 +417,7 @@ const selectTransformTool = () =>
 							state.selected.h
 						);
 
-						imgCtx.clearRect(
+						uiLayers.active.ctx.clearRect(
 							state.selected.x,
 							state.selected.y,
 							state.selected.w,