openOutpaint/js/ui/tool/select.js
2023-12-15 17:27:44 +01:00

899 lines
25 KiB
JavaScript

const selectTransformTool = () =>
toolbar.registerTool(
"./res/icons/box-select.svg",
"Select Image",
(state, opt) => {
// Draw new cursor immediately
ovLayer.clear();
state.movecb(mouse.coords.world.pos);
// Canvas left mouse handlers
mouse.listen.world.onmousemove.on(state.movecb);
mouse.listen.world.btn.left.onclick.on(state.clickcb);
mouse.listen.world.btn.left.ondragstart.on(state.dragstartcb);
mouse.listen.world.btn.left.ondrag.on(state.dragcb);
mouse.listen.world.btn.left.ondragend.on(state.dragendcb);
// Canvas right mouse handler
mouse.listen.world.btn.right.onclick.on(state.cancelcb);
// Keyboard click handlers
keyboard.listen.onkeyclick.on(state.keyclickcb);
keyboard.listen.onkeydown.on(state.keydowncb);
// Layer system handlers
uil.onactive.on(state.uilayeractivecb);
// Registers keyboard shortcuts
keyboard.onShortcut({ctrl: true, key: "KeyA"}, state.ctrlacb);
keyboard.onShortcut(
{ctrl: true, shift: true, key: "KeyA"},
state.ctrlsacb
);
keyboard.onShortcut({ctrl: true, key: "KeyC"}, state.ctrlccb);
keyboard.onShortcut({ctrl: true, key: "KeyV"}, state.ctrlvcb);
keyboard.onShortcut({ctrl: true, key: "KeyX"}, state.ctrlxcb);
keyboard.onShortcut({key: "Equal"}, state.togglemirror);
state.ctxmenu.mirrorSelectionCheckbox.disabled = true;
state.selected = null;
// Register Layer
state.originalDisplayLayer = imageCollection.registerLayer(null, {
after: uil.layer,
category: "select-display",
});
},
(state, opt) => {
// Clear all those listeners and shortcuts we set up
mouse.listen.world.onmousemove.clear(state.movecb);
mouse.listen.world.btn.left.onclick.clear(state.clickcb);
mouse.listen.world.btn.left.ondragstart.clear(state.dragstartcb);
mouse.listen.world.btn.left.ondrag.clear(state.dragcb);
mouse.listen.world.btn.left.ondragend.clear(state.dragendcb);
mouse.listen.world.btn.right.onclick.clear(state.cancelcb);
keyboard.listen.onkeyclick.clear(state.keyclickcb);
keyboard.listen.onkeydown.clear(state.keydowncb);
keyboard.deleteShortcut(state.ctrlacb, "KeyA");
keyboard.deleteShortcut(state.ctrlsacb, "KeyA");
keyboard.deleteShortcut(state.ctrlccb, "KeyC");
keyboard.deleteShortcut(state.ctrlvcb, "KeyV");
keyboard.deleteShortcut(state.ctrlxcb, "KeyX");
keyboard.deleteShortcut(state.togglemirror, "Equal");
uil.onactive.clear(state.uilayeractivecb);
// Clear any selections
state.reset();
// Resets cursor
ovLayer.clear();
// Clears overlay
imageCollection.inputElement.style.cursor = "auto";
// Delete Layer
imageCollection.deleteLayer(state.originalDisplayLayer);
state.originalDisplayLayer = null;
},
{
init: (state) => {
state.clipboard = {};
state.snapToGrid = true;
state.keepAspectRatio = true;
state.block_res_change = true;
state.useClipboard = !!(
navigator.clipboard && navigator.clipboard.write
); // Use it by default if supported
state.selectionPeekOpacity = 40;
state.original = null;
state._selected = null;
Object.defineProperty(state, "selected", {
get: () => state._selected,
set: (v) => {
if (v) state.ctxmenu.enableButtons();
else state.ctxmenu.disableButtons();
return (state._selected = v);
},
});
// Some things to easy request for a redraw
state.lastMouseTarget = null;
state.lastMouseMove = {x: 0, y: 0};
state.redraw = () => {
ovLayer.clear();
state.movecb(state.lastMouseMove);
};
state.uilayeractivecb = ({uilayer}) => {
if (state.originalDisplayLayer) {
state.originalDisplayLayer.moveAfter(uilayer.layer);
}
};
/** @type {{selected: Point, offset: Point} | null} */
let moving = null;
/** @type {{handle: Point} | null} */
let scaling = null;
let rotating = false;
// Clears selection and make things right
state.reset = (erase = false) => {
if (state.selected && !erase)
state.original.layer.ctx.drawImage(
state.selected.canvas,
state.original.x,
state.original.y
);
if (state.originalDisplayLayer) {
state.originalDisplayLayer.clear();
}
if (state.dragging) state.dragging = null;
else {
state.ctxmenu.mirrorSelectionCheckbox.disabled = true;
state.selected = null;
}
state.mirrorSetValue(false);
state.rotation = 0;
state.original = null;
moving = null;
scaling = null;
rotating = null;
state.redraw();
};
// Selection Handlers
const selection = _tool._draggable_selection(state);
// UI Erasers
let eraseSelectedBox = () => null;
let eraseSelectedImage = () => null;
let eraseCursor = () => null;
let eraseSelection = () => null;
// Redraw UI
state.redrawui = () => {
// Get cursor positions
const {x, y, sx, sy} = _tool._process_cursor(
state.lastMouseMove,
state.snapToGrid
);
eraseSelectedBox();
if (state.selected) {
eraseSelectedBox = state.selected.drawBox(
uiCtx,
{x, y},
viewport.c2v
);
}
};
// Mirroring
state.togglemirror = () => {
state.mirrorSetValue(!state.mirrorSelection);
};
// Mouse Move Handler
state.movecb = (evn) => {
state.lastMouseMove = evn;
// Get cursor positions
const {x, y, sx, sy} = _tool._process_cursor(evn, state.snapToGrid);
// Erase Cursor
eraseSelectedBox();
eraseSelectedImage();
eraseSelection();
eraseCursor();
imageCollection.inputElement.style.cursor = "default";
// Draw Box and Selected Image
if (state.selected) {
eraseSelectedBox = state.selected.drawBox(
uiCtx,
{x, y},
viewport.c2v
);
if (
state.selected.hoveringBox(x, y) ||
state.selected.hoveringHandle(x, y, viewport.zoom).onHandle ||
state.selected.hoveringRotateHandle(x, y, viewport.zoom)
) {
imageCollection.inputElement.style.cursor = "pointer";
}
eraseSelectedImage = state.selected.drawImage(
state.originalDisplayLayer.ctx,
ovCtx,
{opacity: state.selectionPeekOpacity / 100}
);
}
// Draw Selection
if (selection.exists) {
uiCtx.save();
uiCtx.setLineDash([2, 2]);
uiCtx.lineWidth = 2;
uiCtx.strokeStyle = "#FFF";
const bbvp = selection.bb.transform(viewport.c2v);
uiCtx.beginPath();
uiCtx.strokeRect(bbvp.x, bbvp.y, bbvp.w, bbvp.h);
uiCtx.stroke();
eraseSelection = () =>
uiCtx.clearRect(
bbvp.x - 10,
bbvp.y - 10,
bbvp.w + 20,
bbvp.h + 20
);
uiCtx.restore();
}
// Draw cursor
eraseCursor = _tool._cursor_draw(sx, sy);
};
// Handles left mouse clicks
state.clickcb = (evn) => {
if (
state.selected &&
!(
state.selected.rotation === 0 &&
state.selected.scale.x === 1 &&
state.selected.scale.y === 1 &&
state.selected.position.x === state.original.sx &&
state.selected.position.y === state.original.sy &&
!state.mirrorSelection &&
state.original.layer === uil.layer
) &&
!isCanvasBlank(
0,
0,
state.selected.canvas.width,
state.selected.canvas.height,
state.selected.canvas
)
) {
// Put original image back
state.original.layer.ctx.drawImage(
state.selected.canvas,
state.original.x,
state.original.y
);
// Erase Original Selection Area
commands.runCommand(
"eraseImage",
"Transform Tool Erase",
{
layer: state.original.layer,
x: state.original.x,
y: state.original.y,
w: state.selected.canvas.width,
h: state.selected.canvas.height,
},
{
extra: {
log: `Erased original selection area at x: ${state.original.x}, y: ${state.original.y}, width: ${state.selected.canvas.width}, height: ${state.selected.canvas.height} from layer ${state.original.layer.id}`,
},
}
);
// Draw Image
const {canvas, bb} = cropCanvas(state.originalDisplayLayer.canvas, {
border: 10,
});
let commandLog = "";
const addline = (v, newline = true) => {
commandLog += v;
if (newline) commandLog += "\n";
};
addline(
`Draw selected area to x: ${bb.x}, y: ${bb.y}, width: ${bb.w}, height: ${bb.h} to layer ${state.original.layer.id}`
);
addline(
` - translation: (x: ${state.selected.position.x}, y: ${state.selected.position.y})`
);
addline(
` - rotation : ${
Math.round(1000 * ((180 * state.selected.rotation) / Math.PI)) /
1000
} degrees`,
false
);
commands.runCommand(
"drawImage",
"Transform Tool Apply",
{
image: canvas,
...bb,
},
{
extra: {
log: commandLog,
},
}
);
state.reset(true);
} else {
state.reset();
}
};
// Handles left mouse drag start events
state.dragstartcb = (evn) => {
const {
x: ix,
y: iy,
sx: six,
sy: siy,
} = _tool._process_cursor({x: evn.ix, y: evn.iy}, state.snapToGrid);
const {x, y, sx, sy} = _tool._process_cursor(evn, state.snapToGrid);
if (state.selected) {
const hoveringBox = state.selected.hoveringBox(ix, iy);
const hoveringHandle = state.selected.hoveringHandle(
ix,
iy,
viewport.zoom
);
const hoveringRotateHandle = state.selected.hoveringRotateHandle(
ix,
iy,
viewport.zoom
);
if (hoveringBox) {
// Start dragging
moving = {
selected: state.selected.position,
offset: {
x: six - state.selected.position.x,
y: siy - state.selected.position.y,
},
};
return;
} else if (hoveringHandle.onHandle) {
// Start scaling
let handle = {x: 0, y: 0};
const lbb = new BoundingBox({
x: -state.selected.canvas.width / 2,
y: -state.selected.canvas.height / 2,
w: state.selected.canvas.width,
h: state.selected.canvas.height,
});
if (hoveringHandle.ontl) {
handle = lbb.tl;
} else if (hoveringHandle.ontr) {
handle = lbb.tr;
} else if (hoveringHandle.onbl) {
handle = lbb.bl;
} else {
handle = lbb.br;
}
scaling = {
handle,
};
return;
} else if (hoveringRotateHandle) {
rotating = true;
return;
}
}
selection.dragstartcb(evn);
};
const transform = (evn, x, y, sx, sy) => {
if (moving) {
state.selected.position = {
x: sx - moving.offset.x,
y: sy - moving.offset.y,
};
}
if (scaling) {
/** @type {DOMMatrix} */
const m = state.selected.rtmatrix.invertSelf();
const lscursor = m.transformPoint({x: sx, y: sy});
const xs = lscursor.x / scaling.handle.x;
const ys = lscursor.y / scaling.handle.y;
let xscale = 1;
let yscale = 1;
if (!state.keepAspectRatio) {
xscale = xs;
yscale = ys;
} else {
xscale = yscale = Math.max(xs, ys);
}
state.selected.scale = {x: xscale, y: yscale};
}
if (rotating) {
const center = state.selected.matrix.transformPoint({x: 0, y: 0});
let angle = Math.atan2(x - center.x, center.y - y);
if (evn.evn.shiftKey)
angle =
config.rotationSnappingAngles.find(
(v) => Math.abs(v - angle) < config.rotationSnappingDistance
) ?? angle;
state.selected.rotation = angle;
}
};
// Handles left mouse drag events
state.dragcb = (evn) => {
const {x, y, sx, sy} = _tool._process_cursor(evn, state.snapToGrid);
if (state.selected) transform(evn, x, y, sx, sy);
if (selection.exists) selection.dragcb(evn);
};
// Handles left mouse drag end events
/** @type {(bb: BoundingBox) => void} */
const select = (bb) => {
const canvas = document.createElement("canvas");
canvas.width = bb.w;
canvas.height = bb.h;
canvas
.getContext("2d")
.drawImage(uil.canvas, bb.x, bb.y, bb.w, bb.h, 0, 0, bb.w, bb.h);
uil.ctx.clearRect(bb.x, bb.y, bb.w, bb.h);
state.original = {
...bb,
sx: bb.center.x,
sy: bb.center.y,
layer: uil.layer,
};
state.selected = new _tool.MarqueeSelection(canvas, bb.center);
state.ctxmenu.mirrorSelectionCheckbox.disabled = false;
state.redraw();
};
state.dragendcb = (evn) => {
const {x, y, sx, sy} = _tool._process_cursor(evn, state.snapToGrid);
if (selection.exists) {
selection.dragendcb(evn);
const bb = selection.bb;
state.backupBB = bb;
state.reset();
if (selection.exists && bb.w !== 0 && bb.h !== 0) select(bb);
selection.deselect();
}
if (state.selected) transform(evn, x, y, sx, sy);
moving = null;
scaling = null;
rotating = false;
state.redraw();
};
// Handler for right clicks. Basically resets everything
state.cancelcb = (evn) => {
state.reset();
};
// Keyboard callbacks (For now, they just handle the "delete" key)
state.keydowncb = (evn) => {};
state.keyclickcb = (evn) => {
switch (evn.code) {
case "Delete":
// Deletes selected area
state.selected &&
commands.runCommand(
"eraseImage",
"Erase Area",
state.selected,
{
extra: {
log: `[Placeholder] Delete selected area. TODO it's also broken`,
},
}
);
state.ctxmenu.mirrorSelectionCheckbox.disabled = true;
state.selected = null;
state.redraw();
}
};
// Register Ctrl-A Shortcut
state.ctrlacb = () => {
try {
const {bb} = cropCanvas(uil.canvas);
select(bb);
} catch (e) {
// Ignore errors
}
};
state.ctrlsacb = () => {
// Shift Key selects based on all visible layer information
const tl = {x: Infinity, y: Infinity};
const br = {x: -Infinity, y: -Infinity};
uil.layers.forEach(({layer}) => {
try {
const {bb} = cropCanvas(layer.canvas);
tl.x = Math.min(bb.tl.x, tl.x);
tl.y = Math.min(bb.tl.y, tl.y);
br.x = Math.max(bb.br.x, br.x);
br.y = Math.max(bb.br.y, br.y);
} catch (e) {
// Ignore errors
}
});
if (Number.isFinite(br.x - tl.y)) {
select(BoundingBox.fromStartEnd(tl, br));
}
};
// Register Ctrl-C/V Shortcut
// Handles copying
state.ctrlccb = (evn, cut = false) => {
if (!state.selected) return;
if (
isCanvasBlank(
0,
0,
state.selected.canvas.width,
state.selected.canvas.height,
state.selected.canvas
)
)
return;
// We create a new canvas to store the data
state.clipboard.copy = document.createElement("canvas");
state.clipboard.copy.width = state.selected.canvas.width;
state.clipboard.copy.height = state.selected.canvas.height;
const ctx = state.clipboard.copy.getContext("2d");
ctx.clearRect(0, 0, state.selected.w, state.selected.h);
ctx.drawImage(state.selected.canvas, 0, 0);
// If cutting, we reverse the selection and erase the selection area
if (cut) {
const aux = state.original;
state.reset();
commands.runCommand("eraseImage", "Cut Image", aux, {
extra: {
log: `Cut to clipboard a selected area at x: ${aux.x}, y: ${aux.y}, width: ${aux.w}, height: ${aux.h} from layer ${state.original.layer.id}`,
},
});
}
// Because firefox needs manual activation of the feature
if (state.useClipboard) {
// Send to clipboard
state.clipboard.copy.toBlob((blob) => {
const item = new ClipboardItem({"image/png": blob});
navigator.clipboard &&
navigator.clipboard.write([item]).catch((e) => {
console.warn("Error sending to clipboard");
console.warn(e);
});
});
}
};
// Handles pasting
state.ctrlvcb = async (evn) => {
if (state.useClipboard) {
// If we use the clipboard, do some proccessing of clipboard data (ugly but kind of minimum required)
navigator.clipboard &&
navigator.clipboard.read().then((items) => {
for (const item of items) {
for (const type of item.types) {
if (type.startsWith("image/")) {
item.getType(type).then(async (blob) => {
// Converts blob to image
const url = window.URL || window.webkitURL;
const image = document.createElement("img");
image.src = url.createObjectURL(blob);
await image.decode();
tools.stamp.enable({
image,
back: tools.selecttransform.enable,
});
});
}
}
}
});
} else if (state.clipboard.copy) {
// Use internal clipboard
const image = document.createElement("img");
image.src = state.clipboard.copy.toDataURL();
await image.decode();
// Send to stamp, as clipboard temporary data
tools.stamp.enable({
image,
back: tools.selecttransform.enable,
});
}
};
// Cut shortcut. Basically, send to copy handler
state.ctrlxcb = (evn) => {
state.ctrlccb(evn, true);
};
},
populateContextMenu: (menu, state) => {
if (!state.ctxmenu) {
state.ctxmenu = {};
// Snap To Grid Checkbox
state.ctxmenu.snapToGridLabel = _toolbar_input.checkbox(
state,
"openoutpaint/select-snaptogrid",
"snapToGrid",
"Snap To Grid",
"icon-grid"
).checkbox;
// Keep Aspect Ratio
state.ctxmenu.keepAspectRatioLabel = _toolbar_input.checkbox(
state,
"openoutpaint/select-keepaspectratio",
"keepAspectRatio",
"Keep Aspect Ratio",
"icon-maximize"
).checkbox;
// Mirroring
state.onMirror = () => {
if (state.selected) {
const scale = state.selected.scale;
scale.x *= -1;
state.selected.scale = scale;
state.redraw();
}
};
const {checkbox: mirrorCheckbox, setValue: _mirrorSetValue} =
_toolbar_input.checkbox(
state,
"openoutpaint/select-mirror",
"mirrorSelection",
"Mirror Selection",
"icon-flip-horizontal",
(v) => {
state.onMirror();
}
);
state.ctxmenu.mirrorSelectionCheckbox = mirrorCheckbox;
state.ctxmenu.mirrorSelectionCheckbox.disabled = true;
_mirrorSetValue(false);
state.mirrorSetValue = (v) => {
_mirrorSetValue(v);
if (v !== state.mirrorSelection) {
state.onMirror();
}
};
// Use Clipboard
const clipboardCheckbox = _toolbar_input.checkbox(
state,
"openoutpaint/select-useclipboard",
"useClipboard",
"Use clipboard",
"icon-clipboard-list"
);
state.ctxmenu.useClipboardLabel = clipboardCheckbox.checkbox;
if (!(navigator.clipboard && navigator.clipboard.write))
clipboardCheckbox.checkbox.disabled = true; // Disable if not available
// Selection Peek Opacity
state.ctxmenu.selectionPeekOpacitySlider = _toolbar_input.slider(
state,
"openoutpaint/select-peekopacity",
"selectionPeekOpacity",
"Peek Opacity",
{
min: 0,
max: 100,
step: 10,
textStep: 1,
cb: () => {
state.redraw();
},
}
).slider;
// Some useful actions to do with selection
const actionArray = document.createElement("div");
actionArray.classList.add("button-array");
// Save button
const saveSelectionButton = document.createElement("button");
saveSelectionButton.classList.add("button", "tool");
saveSelectionButton.textContent = "Save Sel.";
saveSelectionButton.title = "Saves Selection";
saveSelectionButton.onclick = () => {
downloadCanvas({
cropToContent: false,
canvas: state.selected.canvas,
});
};
// Save as Resource Button
const createResourceButton = document.createElement("button");
createResourceButton.classList.add("button", "tool");
createResourceButton.textContent = "Resource";
createResourceButton.title = "Saves Selection as a Resource";
createResourceButton.onclick = () => {
const image = document.createElement("img");
image.src = state.selected.canvas.toDataURL();
image.onload = () => {
tools.stamp.state.addResource("Selection Resource", image);
tools.stamp.enable();
};
};
actionArray.appendChild(saveSelectionButton);
actionArray.appendChild(createResourceButton);
// Some useful actions to do with selection
const visibleActionArray = document.createElement("div");
visibleActionArray.classList.add("button-array");
// Save Visible button
const saveVisibleSelectionButton = document.createElement("button");
saveVisibleSelectionButton.classList.add("button", "tool");
saveVisibleSelectionButton.textContent = "Save Vis.";
saveVisibleSelectionButton.title = "Saves Visible Selection";
saveVisibleSelectionButton.onclick = () => {
console.debug(state.selected);
console.debug(state.selected.bb);
var selectBB =
state.selected.bb != undefined
? state.selected.bb
: state.backupBB;
const canvas = uil.getVisible(selectBB, {
categories: ["image", "user", "select-display"],
});
downloadCanvas({
cropToContent: false,
canvas,
});
};
// Save Visible as Resource Button
const createVisibleResourceButton = document.createElement("button");
createVisibleResourceButton.classList.add("button", "tool");
createVisibleResourceButton.textContent = "Vis. to Res.";
createVisibleResourceButton.title =
"Saves Visible Selection as a Resource";
createVisibleResourceButton.onclick = () => {
var selectBB =
state.selected.bb != undefined
? state.selected.bb
: state.backupBB;
const canvas = uil.getVisible(selectBB, {
categories: ["image", "user", "select-display"],
});
const image = document.createElement("img");
image.src = canvas.toDataURL();
image.onload = () => {
tools.stamp.state.addResource("Selection Resource", image);
tools.stamp.enable();
};
};
visibleActionArray.appendChild(saveVisibleSelectionButton);
visibleActionArray.appendChild(createVisibleResourceButton);
// Disable buttons (if nothing is selected)
state.ctxmenu.disableButtons = () => {
saveSelectionButton.disabled = true;
createResourceButton.disabled = true;
saveVisibleSelectionButton.disabled = true;
createVisibleResourceButton.disabled = true;
};
// Enable buttons (if something is selected)
state.ctxmenu.enableButtons = () => {
saveSelectionButton.disabled = "";
createResourceButton.disabled = "";
saveVisibleSelectionButton.disabled = "";
createVisibleResourceButton.disabled = "";
};
state.ctxmenu.actionArray = actionArray;
state.ctxmenu.visibleActionArray = visibleActionArray;
// Send Selection to Destination
state.ctxmenu.sendSelected = document.createElement("select");
state.ctxmenu.sendSelected.style.width = "100%";
state.ctxmenu.sendSelected.addEventListener("change", (evn) => {
const v = evn.target.value;
if (state.selected && v !== "None")
global.webui && global.webui.sendTo(state.selected.canvas, v);
evn.target.value = "None";
});
let opt = document.createElement("option");
opt.textContent = "Send To...";
opt.value = "None";
state.ctxmenu.sendSelected.appendChild(opt);
}
const array = document.createElement("div");
array.classList.add("checkbox-array");
array.appendChild(state.ctxmenu.snapToGridLabel);
array.appendChild(state.ctxmenu.keepAspectRatioLabel);
array.appendChild(state.ctxmenu.mirrorSelectionCheckbox);
array.appendChild(state.ctxmenu.useClipboardLabel);
menu.appendChild(array);
menu.appendChild(state.ctxmenu.selectionPeekOpacitySlider);
menu.appendChild(state.ctxmenu.actionArray);
menu.appendChild(state.ctxmenu.visibleActionArray);
if (global.webui && global.webui.destinations) {
while (state.ctxmenu.sendSelected.lastChild.value !== "None") {
state.ctxmenu.sendSelected.removeChild(
state.ctxmenu.sendSelected.lastChild
);
}
global.webui.destinations.forEach((dst) => {
const opt = document.createElement("option");
opt.textContent = dst.name;
opt.value = dst.id;
state.ctxmenu.sendSelected.appendChild(opt);
});
menu.appendChild(state.ctxmenu.sendSelected);
}
},
shortcut: "S",
}
);