428 lines
13 KiB
JavaScript
428 lines
13 KiB
JavaScript
/**
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* TODO: REFACTOR THIS WHOLE THING
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*/
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const selectTransformTool = () =>
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toolbar.registerTool(
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"./res/icons/box-select.svg",
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"Select Image",
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(state, opt) => {
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// Draw new cursor immediately
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ovLayer.clear();
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state.movecb(mouse.coords.world.pos);
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// Canvas left mouse handlers
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mouse.listen.world.onmousemove.on(state.movecb);
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mouse.listen.world.btn.left.onclick.on(state.clickcb);
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mouse.listen.world.btn.left.ondragstart.on(state.dragstartcb);
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mouse.listen.world.btn.left.ondragend.on(state.dragendcb);
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// Canvas right mouse handler
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mouse.listen.world.btn.right.onclick.on(state.cancelcb);
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// Keyboard click handlers
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keyboard.listen.onkeyclick.on(state.keyclickcb);
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keyboard.listen.onkeydown.on(state.keydowncb);
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// Layer system handlers
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uil.onactive.on(state.uilayeractivecb);
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// Registers keyboard shortcuts
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keyboard.onShortcut({ctrl: true, key: "KeyC"}, state.ctrlccb);
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keyboard.onShortcut({ctrl: true, key: "KeyV"}, state.ctrlvcb);
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keyboard.onShortcut({ctrl: true, key: "KeyX"}, state.ctrlxcb);
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state.selected = null;
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},
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(state, opt) => {
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// Clear all those listeners and shortcuts we set up
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mouse.listen.world.onmousemove.clear(state.movecb);
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mouse.listen.world.btn.left.onclick.clear(state.clickcb);
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mouse.listen.world.btn.left.ondragstart.clear(state.dragstartcb);
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mouse.listen.world.btn.left.ondragend.clear(state.dragendcb);
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mouse.listen.world.btn.right.onclick.clear(state.cancelcb);
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keyboard.listen.onkeyclick.clear(state.keyclickcb);
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keyboard.listen.onkeydown.clear(state.keydowncb);
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keyboard.deleteShortcut(state.ctrlccb, "KeyC");
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keyboard.deleteShortcut(state.ctrlvcb, "KeyV");
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keyboard.deleteShortcut(state.ctrlxcb, "KeyX");
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uil.onactive.clear(state.uilayeractivecb);
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// Clear any selections
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state.reset();
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// Resets cursor
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ovLayer.clear();
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// Clears overlay
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imageCollection.inputElement.style.cursor = "auto";
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},
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{
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init: (state) => {
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state.clipboard = {};
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state.snapToGrid = true;
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state.keepAspectRatio = true;
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state.block_res_change = true;
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state.useClipboard = !!(
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navigator.clipboard && navigator.clipboard.write
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); // Use it by default if supported
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state.selectionPeekOpacity = 40;
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state.original = null;
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state._selected = null;
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Object.defineProperty(state, "selected", {
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get: () => state._selected,
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set: (v) => {
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if (v) state.ctxmenu.enableButtons();
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else state.ctxmenu.disableButtons();
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return (state._selected = v);
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},
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});
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// Some things to easy request for a redraw
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state.lastMouseTarget = null;
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state.lastMouseMove = {x: 0, y: 0};
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state.redraw = () => {
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ovLayer.clear();
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state.movecb(state.lastMouseMove);
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};
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state.uilayeractivecb = ({uilayer}) => {
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if (state.originalDisplayLayer) {
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state.originalDisplayLayer.moveAfter(uilayer.layer);
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}
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};
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// Clears selection and make things right
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state.reset = (erase = false) => {
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if (state.selected && !erase)
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state.originalLayer.ctx.drawImage(
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state.original.image,
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state.original.x,
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state.original.y
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);
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if (state.originalDisplayLayer) {
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imageCollection.deleteLayer(state.originalDisplayLayer);
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state.originalDisplayLayer = null;
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}
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if (state.dragging) state.dragging = null;
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else state.selected = null;
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state.rotation = 0;
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state.original = null;
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state.redraw();
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};
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// Selection Handlers
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const selection = _tool._draggable_selection(state);
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state.dragstartcb = (evn) => selection.dragstartcb(evn);
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state.dragcb = (evn) => selection.dragcb(evn);
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state.dragendcb = (evn) => selection.dragendcb(evn);
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// Mouse Move Handler
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let eraseCursor = () => null;
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state.movecb = (evn) => {
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// Get cursor positions
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const {x, y, sx, sy} = _tool._process_cursor(evn, state.snapToGrid);
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// Draw cursor
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eraseCursor();
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eraseCursor = _tool._cursor_draw(sx, sy);
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// Draw Box and Selected Image
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if (state.selected) {
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state.selected.drawBox(uiCtx);
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}
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// Draw Selection
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if (selection.exists) {
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uiCtx.setLineDash([2, 2]);
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uiCtx.lineWidth = 1;
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uiCtx.strokeStyle = "#FFF";
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const vpbb = selection.bb.transform(viewport.matrix);
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}
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};
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// Handles left mouse clicks
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state.clickcb = (evn) => {};
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// Handles left mouse drag events
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state.dragstartcb = (evn) => {
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if (state.selected && state.selected.hasCursor()) {
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} else {
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state.selection;
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}
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};
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// Handles left mouse drag end events
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state.dragendcb = (evn) => {};
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// Handler for right clicks. Basically resets everything
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state.cancelcb = (evn) => {
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state.reset();
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};
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// Keyboard callbacks (For now, they just handle the "delete" key)
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state.keydowncb = (evn) => {};
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state.keyclickcb = (evn) => {
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switch (evn.code) {
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case "Delete":
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// Deletes selected area
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state.selected &&
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commands.runCommand("eraseImage", "Erase Area", state.selected);
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state.selected = null;
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state.redraw();
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}
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};
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// Register Ctrl-C/V Shortcut
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// Handles copying
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state.ctrlccb = (evn, cut = false) => {
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// We create a new canvas to store the data
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state.clipboard.copy = document.createElement("canvas");
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state.clipboard.copy.width = state.selected.w;
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state.clipboard.copy.height = state.selected.h;
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const ctx = state.clipboard.copy.getContext("2d");
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ctx.clearRect(0, 0, state.selected.w, state.selected.h);
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ctx.drawImage(
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state.selected.image,
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0,
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0,
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state.selected.image.width,
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state.selected.image.height,
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0,
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0,
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state.selected.w,
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state.selected.h
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);
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// If cutting, we reverse the selection and erase the selection area
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if (cut) {
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const aux = state.original;
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state.reset();
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commands.runCommand("eraseImage", "Cut Image", aux);
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}
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// Because firefox needs manual activation of the feature
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if (state.useClipboard) {
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// Send to clipboard
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state.clipboard.copy.toBlob((blob) => {
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const item = new ClipboardItem({"image/png": blob});
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navigator.clipboard &&
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navigator.clipboard.write([item]).catch((e) => {
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console.warn("Error sending to clipboard");
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console.warn(e);
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});
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});
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}
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};
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// Handles pasting
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state.ctrlvcb = (evn) => {
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if (state.useClipboard) {
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// If we use the clipboard, do some proccessing of clipboard data (ugly but kind of minimum required)
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navigator.clipboard &&
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navigator.clipboard.read().then((items) => {
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for (const item of items) {
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for (const type of item.types) {
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if (type.startsWith("image/")) {
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item.getType(type).then(async (blob) => {
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// Converts blob to image
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const url = window.URL || window.webkitURL;
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const image = document.createElement("img");
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image.src = url.createObjectURL(blob);
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await image.decode();
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tools.stamp.enable({
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image,
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back: tools.selecttransform.enable,
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});
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});
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}
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}
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}
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});
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} else if (state.clipboard.copy) {
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// Use internal clipboard
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const image = document.createElement("img");
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image.src = state.clipboard.copy.toDataURL();
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// Send to stamp, as clipboard temporary data
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tools.stamp.enable({
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image,
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back: tools.selecttransform.enable,
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});
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}
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};
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// Cut shortcut. Basically, send to copy handler
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state.ctrlxcb = (evn) => {
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state.ctrlccb(evn, true);
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};
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},
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populateContextMenu: (menu, state) => {
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if (!state.ctxmenu) {
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state.ctxmenu = {};
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// Snap To Grid Checkbox
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state.ctxmenu.snapToGridLabel = _toolbar_input.checkbox(
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state,
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"snapToGrid",
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"Snap To Grid",
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"icon-grid"
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).checkbox;
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// Keep Aspect Ratio
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state.ctxmenu.keepAspectRatioLabel = _toolbar_input.checkbox(
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state,
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"keepAspectRatio",
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"Keep Aspect Ratio",
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"icon-maximize"
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).checkbox;
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// Use Clipboard
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const clipboardCheckbox = _toolbar_input.checkbox(
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state,
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"useClipboard",
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"Use clipboard",
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"icon-clipboard-list"
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);
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state.ctxmenu.useClipboardLabel = clipboardCheckbox.checkbox;
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if (!(navigator.clipboard && navigator.clipboard.write))
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clipboardCheckbox.checkbox.disabled = true; // Disable if not available
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// Selection Peek Opacity
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state.ctxmenu.selectionPeekOpacitySlider = _toolbar_input.slider(
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state,
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"selectionPeekOpacity",
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"Peek Opacity",
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{
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min: 0,
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max: 100,
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step: 10,
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textStep: 1,
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cb: () => {
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state.redraw();
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},
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}
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).slider;
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// Some useful actions to do with selection
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const actionArray = document.createElement("div");
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actionArray.classList.add("button-array");
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// Save button
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const saveSelectionButton = document.createElement("button");
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saveSelectionButton.classList.add("button", "tool");
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saveSelectionButton.textContent = "Save Sel.";
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saveSelectionButton.title = "Saves Selection";
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saveSelectionButton.onclick = () => {
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downloadCanvas({
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cropToContent: false,
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canvas: state.selected.image,
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});
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};
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// Save as Resource Button
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const createResourceButton = document.createElement("button");
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createResourceButton.classList.add("button", "tool");
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createResourceButton.textContent = "Resource";
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createResourceButton.title = "Saves Selection as a Resource";
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createResourceButton.onclick = () => {
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const image = document.createElement("img");
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image.src = state.selected.image.toDataURL();
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image.onload = () => {
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tools.stamp.state.addResource("Selection Resource", image);
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tools.stamp.enable();
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};
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};
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actionArray.appendChild(saveSelectionButton);
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actionArray.appendChild(createResourceButton);
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// Some useful actions to do with selection
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const visibleActionArray = document.createElement("div");
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visibleActionArray.classList.add("button-array");
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// Save Visible button
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const saveVisibleSelectionButton = document.createElement("button");
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saveVisibleSelectionButton.classList.add("button", "tool");
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saveVisibleSelectionButton.textContent = "Save Vis.";
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saveVisibleSelectionButton.title = "Saves Visible Selection";
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saveVisibleSelectionButton.onclick = () => {
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const canvas = uil.getVisible(state.selected, {
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categories: ["image", "user", "select-display"],
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});
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downloadCanvas({
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cropToContent: false,
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canvas,
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});
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};
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// Save Visible as Resource Button
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const createVisibleResourceButton = document.createElement("button");
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createVisibleResourceButton.classList.add("button", "tool");
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createVisibleResourceButton.textContent = "Vis. to Res.";
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createVisibleResourceButton.title =
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"Saves Visible Selection as a Resource";
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createVisibleResourceButton.onclick = () => {
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const canvas = uil.getVisible(state.selected, {
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categories: ["image", "user", "select-display"],
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});
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const image = document.createElement("img");
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image.src = canvas.toDataURL();
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image.onload = () => {
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tools.stamp.state.addResource("Selection Resource", image);
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tools.stamp.enable();
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};
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};
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visibleActionArray.appendChild(saveVisibleSelectionButton);
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visibleActionArray.appendChild(createVisibleResourceButton);
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// Disable buttons (if nothing is selected)
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state.ctxmenu.disableButtons = () => {
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saveSelectionButton.disabled = true;
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createResourceButton.disabled = true;
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saveVisibleSelectionButton.disabled = true;
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createVisibleResourceButton.disabled = true;
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};
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// Disable buttons (if something is selected)
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state.ctxmenu.enableButtons = () => {
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saveSelectionButton.disabled = "";
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createResourceButton.disabled = "";
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saveVisibleSelectionButton.disabled = "";
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createVisibleResourceButton.disabled = "";
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};
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state.ctxmenu.actionArray = actionArray;
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state.ctxmenu.visibleActionArray = visibleActionArray;
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}
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const array = document.createElement("div");
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array.classList.add("checkbox-array");
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array.appendChild(state.ctxmenu.snapToGridLabel);
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array.appendChild(state.ctxmenu.keepAspectRatioLabel);
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array.appendChild(state.ctxmenu.useClipboardLabel);
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menu.appendChild(array);
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menu.appendChild(state.ctxmenu.selectionPeekOpacitySlider);
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menu.appendChild(state.ctxmenu.actionArray);
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menu.appendChild(state.ctxmenu.visibleActionArray);
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},
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shortcut: "S",
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}
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);
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