Files
Comfyui-LayerForge/js/CanvasInteractions.js
Dariusz L ef01be3323 Add canvas move and resize interactions
Implemented new interaction modes for moving and resizing the canvas using shift and alt modifiers. Added corresponding handlers for mouse events to support these actions.
2025-07-02 08:48:41 +02:00

779 lines
30 KiB
JavaScript

import {createModuleLogger} from "./utils/LoggerUtils.js";
import {snapToGrid, getSnapAdjustment} from "./utils/CommonUtils.js";
const log = createModuleLogger('CanvasInteractions');
export class CanvasInteractions {
constructor(canvas) {
this.canvas = canvas;
this.interaction = {
mode: 'none',
panStart: {x: 0, y: 0},
dragStart: {x: 0, y: 0},
transformOrigin: {},
resizeHandle: null,
resizeAnchor: {x: 0, y: 0},
canvasResizeStart: {x: 0, y: 0},
isCtrlPressed: false,
isAltPressed: false,
hasClonedInDrag: false,
lastClickTime: 0,
transformingLayer: null,
keyMovementInProgress: false, // Flaga do śledzenia ruchu klawiszami
};
this.originalLayerPositions = new Map();
this.interaction.canvasResizeRect = null;
this.interaction.canvasMoveRect = null;
}
setupEventListeners() {
this.canvas.canvas.addEventListener('mousedown', this.handleMouseDown.bind(this));
this.canvas.canvas.addEventListener('mousemove', this.handleMouseMove.bind(this));
this.canvas.canvas.addEventListener('mouseup', this.handleMouseUp.bind(this));
this.canvas.canvas.addEventListener('mouseleave', this.handleMouseLeave.bind(this));
this.canvas.canvas.addEventListener('wheel', this.handleWheel.bind(this), {passive: false});
this.canvas.canvas.addEventListener('keydown', this.handleKeyDown.bind(this));
this.canvas.canvas.addEventListener('keyup', this.handleKeyUp.bind(this));
document.addEventListener('paste', this.handlePasteEvent.bind(this));
this.canvas.canvas.addEventListener('mouseenter', (e) => {
this.canvas.isMouseOver = true;
this.handleMouseEnter(e);
});
this.canvas.canvas.addEventListener('mouseleave', (e) => {
this.canvas.isMouseOver = false;
this.handleMouseLeave(e);
});
this.canvas.canvas.addEventListener('dragover', this.handleDragOver.bind(this));
this.canvas.canvas.addEventListener('dragenter', this.handleDragEnter.bind(this));
this.canvas.canvas.addEventListener('dragleave', this.handleDragLeave.bind(this));
this.canvas.canvas.addEventListener('drop', this.handleDrop.bind(this));
this.canvas.canvas.addEventListener('contextmenu', this.handleContextMenu.bind(this));
}
resetInteractionState() {
this.interaction.mode = 'none';
this.interaction.resizeHandle = null;
this.originalLayerPositions.clear();
this.interaction.canvasResizeRect = null;
this.interaction.canvasMoveRect = null;
this.interaction.hasClonedInDrag = false;
this.interaction.transformingLayer = null;
this.canvas.canvas.style.cursor = 'default';
}
handleMouseDown(e) {
this.canvas.canvas.focus();
const worldCoords = this.canvas.getMouseWorldCoordinates(e);
const viewCoords = this.canvas.getMouseViewCoordinates(e);
if (e.button === 2) { // Obsługa prawego przycisku myszy
const clickedLayerResult = this.canvas.canvasLayers.getLayerAtPosition(worldCoords.x, worldCoords.y);
if (clickedLayerResult && this.canvas.selectedLayers.includes(clickedLayerResult.layer)) {
e.preventDefault();
this.canvas.canvasLayers.showBlendModeMenu(viewCoords.x, viewCoords.y);
return;
}
}
if (e.button !== 0) { // Ignoruj inne przyciski niż lewy i prawy
this.startPanning(e);
return;
}
const transformTarget = this.canvas.canvasLayers.getHandleAtPosition(worldCoords.x, worldCoords.y);
if (transformTarget) {
this.startLayerTransform(transformTarget.layer, transformTarget.handle, worldCoords);
return;
}
const clickedLayerResult = this.canvas.canvasLayers.getLayerAtPosition(worldCoords.x, worldCoords.y);
if (clickedLayerResult) {
// Zaznacz warstwę i przygotuj się do potencjalnego przeciągania
this.prepareForDrag(clickedLayerResult.layer, worldCoords);
return;
}
// Jeśli nie kliknięto na nic, rozpocznij panoramowanie lub wyczyść zaznaczenie
this.startPanningOrClearSelection(e);
}
handleMouseMove(e) {
const worldCoords = this.canvas.getMouseWorldCoordinates(e);
// Sprawdź, czy rozpocząć przeciąganie
if (this.interaction.mode === 'potential-drag') {
const dx = worldCoords.x - this.interaction.dragStart.x;
const dy = worldCoords.y - this.interaction.dragStart.y;
if (Math.sqrt(dx * dx + dy * dy) > 3) { // Próg 3 pikseli
this.interaction.mode = 'dragging';
this.originalLayerPositions.clear();
this.canvas.selectedLayers.forEach(l => {
this.originalLayerPositions.set(l, {x: l.x, y: l.y});
});
}
}
switch (this.interaction.mode) {
case 'panning':
this.panViewport(e);
break;
case 'dragging':
this.dragLayers(worldCoords);
break;
case 'resizing':
this.resizeLayerFromHandle(worldCoords, e.shiftKey);
break;
case 'rotating':
this.rotateLayerFromHandle(worldCoords, e.shiftKey);
break;
case 'resizingCanvas':
this.updateCanvasResize(worldCoords);
break;
case 'movingCanvas':
this.updateCanvasMove(worldCoords);
break;
default:
this.updateCursor(worldCoords);
break;
}
}
handleMouseUp(e) {
if (this.interaction.mode === 'resizingCanvas') {
this.finalizeCanvasResize();
}
if (this.interaction.mode === 'movingCanvas') {
this.finalizeCanvasMove();
}
// Zapisz stan tylko, jeśli faktycznie doszło do zmiany (przeciąganie, transformacja, duplikacja)
const stateChangingInteraction = ['dragging', 'resizing', 'rotating'].includes(this.interaction.mode);
const duplicatedInDrag = this.interaction.hasClonedInDrag;
if (stateChangingInteraction || duplicatedInDrag) {
this.canvas.saveState();
this.canvas.canvasState.saveStateToDB(true);
}
this.resetInteractionState();
this.canvas.render();
}
handleMouseLeave(e) {
const viewCoords = this.canvas.getMouseViewCoordinates(e);
if (this.canvas.maskTool.isActive) {
this.canvas.maskTool.handleMouseLeave();
if (this.canvas.maskTool.isDrawing) {
this.canvas.maskTool.handleMouseUp(viewCoords);
}
this.canvas.render();
return;
}
if (this.interaction.mode !== 'none') {
this.resetInteractionState();
this.canvas.render();
}
if (this.canvas.canvasLayers.internalClipboard.length > 0) {
this.canvas.canvasLayers.internalClipboard = [];
log.info("Internal clipboard cleared - mouse left canvas");
}
}
handleMouseEnter(e) {
if (this.canvas.maskTool.isActive) {
this.canvas.maskTool.handleMouseEnter();
}
}
handleContextMenu(e) {
e.preventDefault();
}
handleWheel(e) {
e.preventDefault();
if (this.canvas.maskTool.isActive) {
const worldCoords = this.canvas.getMouseWorldCoordinates(e);
const rect = this.canvas.canvas.getBoundingClientRect();
const mouseBufferX = (e.clientX - rect.left) * (this.canvas.offscreenCanvas.width / rect.width);
const mouseBufferY = (e.clientY - rect.top) * (this.canvas.offscreenCanvas.height / rect.height);
const zoomFactor = e.deltaY < 0 ? 1.1 : 1 / 1.1;
const newZoom = this.canvas.viewport.zoom * zoomFactor;
this.canvas.viewport.zoom = Math.max(0.1, Math.min(10, newZoom));
this.canvas.viewport.x = worldCoords.x - (mouseBufferX / this.canvas.viewport.zoom);
this.canvas.viewport.y = worldCoords.y - (mouseBufferY / this.canvas.viewport.zoom);
} else if (this.canvas.selectedLayer) {
const rotationStep = 5 * (e.deltaY > 0 ? -1 : 1);
this.canvas.selectedLayers.forEach(layer => {
if (e.shiftKey) {
layer.rotation += rotationStep;
} else {
const oldWidth = layer.width;
const oldHeight = layer.height;
let scaleFactor;
if (e.ctrlKey) {
const direction = e.deltaY > 0 ? -1 : 1;
const baseDimension = Math.max(layer.width, layer.height);
const newBaseDimension = baseDimension + direction;
if (newBaseDimension < 10) {
return;
}
scaleFactor = newBaseDimension / baseDimension;
} else {
const gridSize = 64;
const direction = e.deltaY > 0 ? -1 : 1;
let targetHeight;
if (direction > 0) {
targetHeight = (Math.floor(oldHeight / gridSize) + 1) * gridSize;
} else {
targetHeight = (Math.ceil(oldHeight / gridSize) - 1) * gridSize;
}
if (targetHeight < gridSize / 2) {
targetHeight = gridSize / 2;
}
if (Math.abs(oldHeight - targetHeight) < 1) {
if (direction > 0) targetHeight += gridSize;
else targetHeight -= gridSize;
if (targetHeight < gridSize / 2) return;
}
scaleFactor = targetHeight / oldHeight;
}
if (scaleFactor && isFinite(scaleFactor)) {
layer.width *= scaleFactor;
layer.height *= scaleFactor;
layer.x += (oldWidth - layer.width) / 2;
layer.y += (oldHeight - layer.height) / 2;
}
}
});
} else {
const worldCoords = this.canvas.getMouseWorldCoordinates(e);
const rect = this.canvas.canvas.getBoundingClientRect();
const mouseBufferX = (e.clientX - rect.left) * (this.canvas.offscreenCanvas.width / rect.width);
const mouseBufferY = (e.clientY - rect.top) * (this.canvas.offscreenCanvas.height / rect.height);
const zoomFactor = e.deltaY < 0 ? 1.1 : 1 / 1.1;
const newZoom = this.canvas.viewport.zoom * zoomFactor;
this.canvas.viewport.zoom = Math.max(0.1, Math.min(10, newZoom));
this.canvas.viewport.x = worldCoords.x - (mouseBufferX / this.canvas.viewport.zoom);
this.canvas.viewport.y = worldCoords.y - (mouseBufferY / this.canvas.viewport.zoom);
}
this.canvas.render();
if (!this.canvas.maskTool.isActive) {
this.canvas.requestSaveState(true); // Użyj opóźnionego zapisu
}
}
handleKeyDown(e) {
if (e.key === 'Control') this.interaction.isCtrlPressed = true;
if (e.key === 'Alt') {
this.interaction.isAltPressed = true;
e.preventDefault();
}
if (this.canvas.selectedLayer) {
const step = e.shiftKey ? 10 : 1;
let needsRender = false;
const movementKeys = ['ArrowLeft', 'ArrowRight', 'ArrowUp', 'ArrowDown', 'BracketLeft', 'BracketRight'];
if (movementKeys.includes(e.code)) {
e.preventDefault();
e.stopPropagation();
this.interaction.keyMovementInProgress = true;
if (e.code === 'ArrowLeft') this.canvas.selectedLayers.forEach(l => l.x -= step);
if (e.code === 'ArrowRight') this.canvas.selectedLayers.forEach(l => l.x += step);
if (e.code === 'ArrowUp') this.canvas.selectedLayers.forEach(l => l.y -= step);
if (e.code === 'ArrowDown') this.canvas.selectedLayers.forEach(l => l.y += step);
if (e.code === 'BracketLeft') this.canvas.selectedLayers.forEach(l => l.rotation -= step);
if (e.code === 'BracketRight') this.canvas.selectedLayers.forEach(l => l.rotation += step);
needsRender = true;
}
if (e.key === 'Delete') {
e.preventDefault();
e.stopPropagation();
this.canvas.removeSelectedLayers();
return;
}
if (needsRender) {
this.canvas.render(); // Tylko renderuj, nie zapisuj stanu
}
}
}
handleKeyUp(e) {
if (e.key === 'Control') this.interaction.isCtrlPressed = false;
if (e.key === 'Alt') this.interaction.isAltPressed = false;
const movementKeys = ['ArrowLeft', 'ArrowRight', 'ArrowUp', 'ArrowDown', 'BracketLeft', 'BracketRight'];
if (movementKeys.includes(e.code) && this.interaction.keyMovementInProgress) {
this.canvas.requestSaveState(); // Użyj opóźnionego zapisu
this.interaction.keyMovementInProgress = false;
}
}
updateCursor(worldCoords) {
const transformTarget = this.canvas.canvasLayers.getHandleAtPosition(worldCoords.x, worldCoords.y);
if (transformTarget) {
const handleName = transformTarget.handle;
const cursorMap = {
'n': 'ns-resize', 's': 'ns-resize', 'e': 'ew-resize', 'w': 'ew-resize',
'nw': 'nwse-resize', 'se': 'nwse-resize', 'ne': 'nesw-resize', 'sw': 'nesw-resize',
'rot': 'grab'
};
this.canvas.canvas.style.cursor = cursorMap[handleName];
} else if (this.canvas.canvasLayers.getLayerAtPosition(worldCoords.x, worldCoords.y)) {
this.canvas.canvas.style.cursor = 'move';
} else {
this.canvas.canvas.style.cursor = 'default';
}
}
startLayerTransform(layer, handle, worldCoords) {
this.interaction.transformingLayer = layer;
this.interaction.transformOrigin = {
x: layer.x, y: layer.y,
width: layer.width, height: layer.height,
rotation: layer.rotation,
centerX: layer.x + layer.width / 2,
centerY: layer.y + layer.height / 2
};
this.interaction.dragStart = {...worldCoords};
if (handle === 'rot') {
this.interaction.mode = 'rotating';
} else {
this.interaction.mode = 'resizing';
this.interaction.resizeHandle = handle;
const handles = this.canvas.canvasLayers.getHandles(layer);
const oppositeHandleKey = {
'n': 's', 's': 'n', 'e': 'w', 'w': 'e',
'nw': 'se', 'se': 'nw', 'ne': 'sw', 'sw': 'ne'
}[handle];
this.interaction.resizeAnchor = handles[oppositeHandleKey];
}
this.canvas.render();
}
prepareForDrag(layer, worldCoords) {
// Zaktualizuj zaznaczenie, ale nie zapisuj stanu
if (this.interaction.isCtrlPressed) {
const index = this.canvas.selectedLayers.indexOf(layer);
if (index === -1) {
this.canvas.updateSelection([...this.canvas.selectedLayers, layer]);
} else {
const newSelection = this.canvas.selectedLayers.filter(l => l !== layer);
this.canvas.updateSelection(newSelection);
}
} else {
if (!this.canvas.selectedLayers.includes(layer)) {
this.canvas.updateSelection([layer]);
}
}
this.interaction.mode = 'potential-drag';
this.interaction.dragStart = {...worldCoords};
}
startPanningOrClearSelection(e) {
const worldCoords = this.canvas.getMouseWorldCoordinates(e);
// Sprawdź modyfikatory dla akcji na tle
if (e.shiftKey) {
this.startCanvasResize(worldCoords);
return;
}
if (e.altKey) {
this.startCanvasMove(worldCoords);
return;
}
// Domyślna akcja: wyczyść zaznaczenie i rozpocznij panoramowanie
if (!this.interaction.isCtrlPressed) {
this.canvas.updateSelection([]);
}
this.interaction.mode = 'panning';
this.interaction.panStart = {x: e.clientX, y: e.clientY};
}
startCanvasResize(worldCoords) {
this.interaction.mode = 'resizingCanvas';
const startX = snapToGrid(worldCoords.x);
const startY = snapToGrid(worldCoords.y);
this.interaction.canvasResizeStart = {x: startX, y: startY};
this.interaction.canvasResizeRect = {x: startX, y: startY, width: 0, height: 0};
this.canvas.render();
}
startCanvasMove(worldCoords) {
this.interaction.mode = 'movingCanvas';
this.interaction.dragStart = {...worldCoords};
const initialX = snapToGrid(worldCoords.x - this.canvas.width / 2);
const initialY = snapToGrid(worldCoords.y - this.canvas.height / 2);
this.interaction.canvasMoveRect = {
x: initialX,
y: initialY,
width: this.canvas.width,
height: this.canvas.height
};
this.canvas.canvas.style.cursor = 'grabbing';
this.canvas.render();
}
updateCanvasMove(worldCoords) {
if (!this.interaction.canvasMoveRect) return;
const dx = worldCoords.x - this.interaction.dragStart.x;
const dy = worldCoords.y - this.interaction.dragStart.y;
const initialRectX = snapToGrid(this.interaction.dragStart.x - this.canvas.width / 2);
const initialRectY = snapToGrid(this.interaction.dragStart.y - this.canvas.height / 2);
this.interaction.canvasMoveRect.x = snapToGrid(initialRectX + dx);
this.interaction.canvasMoveRect.y = snapToGrid(initialRectY + dy);
this.canvas.render();
}
finalizeCanvasMove() {
const moveRect = this.interaction.canvasMoveRect;
if (moveRect && (moveRect.x !== 0 || moveRect.y !== 0)) {
const finalX = moveRect.x;
const finalY = moveRect.y;
this.canvas.layers.forEach(layer => {
layer.x -= finalX;
layer.y -= finalY;
});
this.canvas.maskTool.updatePosition(-finalX, -finalY);
this.canvas.viewport.x -= finalX;
this.canvas.viewport.y -= finalY;
}
this.canvas.render();
}
startPanning(e) {
if (!this.interaction.isCtrlPressed) {
this.canvas.updateSelection([]);
}
this.interaction.mode = 'panning';
this.interaction.panStart = {x: e.clientX, y: e.clientY};
}
panViewport(e) {
const dx = e.clientX - this.interaction.panStart.x;
const dy = e.clientY - this.interaction.panStart.y;
this.canvas.viewport.x -= dx / this.canvas.viewport.zoom;
this.canvas.viewport.y -= dy / this.canvas.viewport.zoom;
this.interaction.panStart = {x: e.clientX, y: e.clientY};
this.canvas.render();
}
dragLayers(worldCoords) {
if (this.interaction.isAltPressed && !this.interaction.hasClonedInDrag && this.canvas.selectedLayers.length > 0) {
// Scentralizowana logika duplikowania
const newLayers = this.canvas.duplicateSelectedLayers();
// Zresetuj pozycje przeciągania dla nowych, zduplikowanych warstw
this.originalLayerPositions.clear();
newLayers.forEach(l => {
this.originalLayerPositions.set(l, {x: l.x, y: l.y});
});
this.interaction.hasClonedInDrag = true;
}
const totalDx = worldCoords.x - this.interaction.dragStart.x;
const totalDy = worldCoords.y - this.interaction.dragStart.y;
let finalDx = totalDx, finalDy = totalDy;
if (this.interaction.isCtrlPressed && this.canvas.selectedLayer) {
const originalPos = this.originalLayerPositions.get(this.canvas.selectedLayer);
if (originalPos) {
const tempLayerForSnap = {
...this.canvas.selectedLayer,
x: originalPos.x + totalDx,
y: originalPos.y + totalDy
};
const snapAdjustment = getSnapAdjustment(tempLayerForSnap);
finalDx += snapAdjustment.dx;
finalDy += snapAdjustment.dy;
}
}
this.canvas.selectedLayers.forEach(layer => {
const originalPos = this.originalLayerPositions.get(layer);
if (originalPos) {
layer.x = originalPos.x + finalDx;
layer.y = originalPos.y + finalDy;
}
});
this.canvas.render();
}
resizeLayerFromHandle(worldCoords, isShiftPressed) {
const layer = this.interaction.transformingLayer;
if (!layer) return;
let mouseX = worldCoords.x;
let mouseY = worldCoords.y;
if (this.interaction.isCtrlPressed) {
const snapThreshold = 10 / this.canvas.viewport.zoom;
const snappedMouseX = snapToGrid(mouseX);
if (Math.abs(mouseX - snappedMouseX) < snapThreshold) mouseX = snappedMouseX;
const snappedMouseY = snapToGrid(mouseY);
if (Math.abs(mouseY - snappedMouseY) < snapThreshold) mouseY = snappedMouseY;
}
const o = this.interaction.transformOrigin;
const handle = this.interaction.resizeHandle;
const anchor = this.interaction.resizeAnchor;
const rad = o.rotation * Math.PI / 180;
const cos = Math.cos(rad);
const sin = Math.sin(rad);
const vecX = mouseX - anchor.x;
const vecY = mouseY - anchor.y;
let newWidth = vecX * cos + vecY * sin;
let newHeight = vecY * cos - vecX * sin;
if (isShiftPressed) {
const originalAspectRatio = o.width / o.height;
if (Math.abs(newWidth) > Math.abs(newHeight) * originalAspectRatio) {
newHeight = (Math.sign(newHeight) || 1) * Math.abs(newWidth) / originalAspectRatio;
} else {
newWidth = (Math.sign(newWidth) || 1) * Math.abs(newHeight) * originalAspectRatio;
}
}
let signX = handle.includes('e') ? 1 : (handle.includes('w') ? -1 : 0);
let signY = handle.includes('s') ? 1 : (handle.includes('n') ? -1 : 0);
newWidth *= signX;
newHeight *= signY;
if (signX === 0) newWidth = o.width;
if (signY === 0) newHeight = o.height;
if (newWidth < 10) newWidth = 10;
if (newHeight < 10) newHeight = 10;
layer.width = newWidth;
layer.height = newHeight;
const deltaW = newWidth - o.width;
const deltaH = newHeight - o.height;
const shiftX = (deltaW / 2) * signX;
const shiftY = (deltaH / 2) * signY;
const worldShiftX = shiftX * cos - shiftY * sin;
const worldShiftY = shiftX * sin + shiftY * cos;
const newCenterX = o.centerX + worldShiftX;
const newCenterY = o.centerY + worldShiftY;
layer.x = newCenterX - layer.width / 2;
layer.y = newCenterY - layer.height / 2;
this.canvas.render();
}
rotateLayerFromHandle(worldCoords, isShiftPressed) {
const layer = this.interaction.transformingLayer;
if (!layer) return;
const o = this.interaction.transformOrigin;
const startAngle = Math.atan2(this.interaction.dragStart.y - o.centerY, this.interaction.dragStart.x - o.centerX);
const currentAngle = Math.atan2(worldCoords.y - o.centerY, worldCoords.x - o.centerX);
let angleDiff = (currentAngle - startAngle) * 180 / Math.PI;
let newRotation = o.rotation + angleDiff;
if (isShiftPressed) {
newRotation = Math.round(newRotation / 15) * 15;
}
layer.rotation = newRotation;
this.canvas.render();
}
updateCanvasResize(worldCoords) {
const snappedMouseX = snapToGrid(worldCoords.x);
const snappedMouseY = snapToGrid(worldCoords.y);
const start = this.interaction.canvasResizeStart;
this.interaction.canvasResizeRect.x = Math.min(snappedMouseX, start.x);
this.interaction.canvasResizeRect.y = Math.min(snappedMouseY, start.y);
this.interaction.canvasResizeRect.width = Math.abs(snappedMouseX - start.x);
this.interaction.canvasResizeRect.height = Math.abs(snappedMouseY - start.y);
this.canvas.render();
}
finalizeCanvasResize() {
if (this.interaction.canvasResizeRect && this.interaction.canvasResizeRect.width > 1 && this.interaction.canvasResizeRect.height > 1) {
const newWidth = Math.round(this.interaction.canvasResizeRect.width);
const newHeight = Math.round(this.interaction.canvasResizeRect.height);
const rectX = this.interaction.canvasResizeRect.x;
const rectY = this.interaction.canvasResizeRect.y;
this.canvas.updateOutputAreaSize(newWidth, newHeight);
this.canvas.layers.forEach(layer => {
layer.x -= rectX;
layer.y -= rectY;
});
this.canvas.maskTool.updatePosition(-rectX, -rectY);
this.canvas.viewport.x -= rectX;
this.canvas.viewport.y -= rectY;
}
}
handleDragOver(e) {
e.preventDefault();
e.stopPropagation(); // Prevent ComfyUI from handling this event
e.dataTransfer.dropEffect = 'copy';
}
handleDragEnter(e) {
e.preventDefault();
e.stopPropagation(); // Prevent ComfyUI from handling this event
this.canvas.canvas.style.backgroundColor = 'rgba(45, 90, 160, 0.1)';
this.canvas.canvas.style.border = '2px dashed #2d5aa0';
}
handleDragLeave(e) {
e.preventDefault();
e.stopPropagation(); // Prevent ComfyUI from handling this event
if (!this.canvas.canvas.contains(e.relatedTarget)) {
this.canvas.canvas.style.backgroundColor = '';
this.canvas.canvas.style.border = '';
}
}
async handleDrop(e) {
e.preventDefault();
e.stopPropagation(); // CRITICAL: Prevent ComfyUI from handling this event and loading workflow
log.info("Canvas drag & drop event intercepted - preventing ComfyUI workflow loading");
this.canvas.canvas.style.backgroundColor = '';
this.canvas.canvas.style.border = '';
const files = Array.from(e.dataTransfer.files);
const worldCoords = this.canvas.getMouseWorldCoordinates(e);
log.info(`Dropped ${files.length} file(s) onto canvas at position (${worldCoords.x}, ${worldCoords.y})`);
for (const file of files) {
if (file.type.startsWith('image/')) {
try {
await this.loadDroppedImageFile(file, worldCoords);
log.info(`Successfully loaded dropped image: ${file.name}`);
} catch (error) {
log.error(`Failed to load dropped image ${file.name}:`, error);
}
} else {
log.warn(`Skipped non-image file: ${file.name} (${file.type})`);
}
}
}
async loadDroppedImageFile(file, worldCoords) {
const reader = new FileReader();
reader.onload = async (e) => {
const img = new Image();
img.onload = async () => {
const fitOnAddWidget = this.canvas.node.widgets.find(w => w.name === "fit_on_add");
const addMode = fitOnAddWidget && fitOnAddWidget.value ? 'fit' : 'center';
await this.canvas.addLayer(img, {}, addMode);
};
img.onerror = () => {
log.error(`Failed to load dropped image: ${file.name}`);
};
img.src = e.target.result;
};
reader.onerror = () => {
log.error(`Failed to read dropped file: ${file.name}`);
};
reader.readAsDataURL(file);
}
async handlePasteEvent(e) {
const shouldHandle = this.canvas.isMouseOver ||
this.canvas.canvas.contains(document.activeElement) ||
document.activeElement === this.canvas.canvas ||
document.activeElement === document.body;
if (!shouldHandle) {
log.debug("Paste event ignored - not focused on canvas");
return;
}
log.info("Paste event detected, checking clipboard preference");
const preference = this.canvas.canvasLayers.clipboardPreference;
if (preference === 'clipspace') {
log.info("Clipboard preference is clipspace, delegating to ClipboardManager");
e.preventDefault();
e.stopPropagation();
await this.canvas.canvasLayers.clipboardManager.handlePaste('mouse', preference);
return;
}
const clipboardData = e.clipboardData;
if (clipboardData && clipboardData.items) {
for (const item of clipboardData.items) {
if (item.type.startsWith('image/')) {
e.preventDefault();
e.stopPropagation();
const file = item.getAsFile();
if (file) {
log.info("Found direct image data in paste event");
const reader = new FileReader();
reader.onload = async (event) => {
const img = new Image();
img.onload = async () => {
await this.canvas.canvasLayers.addLayerWithImage(img, {}, 'mouse');
};
img.src = event.target.result;
};
reader.readAsDataURL(file);
return;
}
}
}
}
await this.canvas.canvasLayers.clipboardManager.handlePaste('mouse', preference);
}
}