611 lines
24 KiB
JavaScript
611 lines
24 KiB
JavaScript
import { useMitt } from '@/plugins/MittContext';
|
|
import { useCallback, useEffect, useRef, useState } from 'react';
|
|
import { Image, Layer, Line, Stage, Text, Transformer } from 'react-konva';
|
|
|
|
const VideoPreview = ({
|
|
// Dimensions
|
|
dimensions,
|
|
|
|
// Timeline state
|
|
currentTime,
|
|
totalDuration,
|
|
isPlaying,
|
|
status,
|
|
|
|
// Export state
|
|
isExporting,
|
|
exportProgress,
|
|
exportStatus,
|
|
|
|
// Data
|
|
timelineElements,
|
|
activeElements,
|
|
videoElements,
|
|
loadedVideos,
|
|
videoStates,
|
|
ffmpegCommand,
|
|
|
|
// Event handlers
|
|
handlePlay,
|
|
handlePause,
|
|
handleReset,
|
|
handleSeek,
|
|
copyFFmpegCommand,
|
|
exportVideo,
|
|
onElementUpdate, // New prop for updating element properties
|
|
|
|
// Refs
|
|
layerRef,
|
|
}) => {
|
|
const emitter = useMitt();
|
|
|
|
// Selection state
|
|
const [selectedElementId, setSelectedElementId] = useState(null);
|
|
const transformerRef = useRef(null);
|
|
const stageRef = useRef(null);
|
|
|
|
// Refs for each element to connect with transformer
|
|
const elementRefs = useRef({});
|
|
|
|
// Guide lines state
|
|
const [guideLines, setGuideLines] = useState({
|
|
vertical: null,
|
|
horizontal: null,
|
|
showVertical: false,
|
|
showHorizontal: false,
|
|
});
|
|
|
|
// Snap settings
|
|
const POSITION_SNAP_THRESHOLD = 10; // Pixels within which to snap to center
|
|
|
|
// Function to determine which image source to use for videos
|
|
const getImageSource = (element) => {
|
|
const isVideoActive = videoStates[element.id] && isPlaying;
|
|
|
|
if (isVideoActive && element.videoElement && element.isVideoReady) {
|
|
return element.videoElement;
|
|
} else if (element.posterImage && element.isVideoPoster) {
|
|
return element.posterImage;
|
|
}
|
|
|
|
return null;
|
|
};
|
|
|
|
// Helper function to get font style for text elements
|
|
const getTextFontStyle = (element) => {
|
|
const isBold = element.fontWeight === 'bold' || element.fontWeight === 700;
|
|
const isItalic = element.fontStyle === 'italic';
|
|
|
|
if (isBold && isItalic) {
|
|
return 'bold italic';
|
|
} else if (isBold) {
|
|
return 'bold';
|
|
} else if (isItalic) {
|
|
return 'italic';
|
|
} else {
|
|
return 'normal';
|
|
}
|
|
};
|
|
|
|
// Check if element uses center-offset positioning
|
|
const usesCenterPositioning = (elementType) => {
|
|
return elementType === 'video' || elementType === 'image';
|
|
};
|
|
|
|
// Check if position should snap to center and calculate guide lines
|
|
const calculateSnapAndGuides = (elementId, newX, newY, width, height) => {
|
|
const centerX = dimensions.width / 2;
|
|
const centerY = dimensions.height / 2;
|
|
|
|
// Calculate element center
|
|
const elementCenterX = newX + width / 2;
|
|
const elementCenterY = newY + height / 2;
|
|
|
|
let snapX = newX;
|
|
let snapY = newY;
|
|
let showVertical = false;
|
|
let showHorizontal = false;
|
|
let verticalLine = null;
|
|
let horizontalLine = null;
|
|
|
|
// Check vertical center snap
|
|
if (Math.abs(elementCenterX - centerX) < POSITION_SNAP_THRESHOLD) {
|
|
snapX = centerX - width / 2;
|
|
showVertical = true;
|
|
verticalLine = centerX;
|
|
}
|
|
|
|
// Check horizontal center snap
|
|
if (Math.abs(elementCenterY - centerY) < POSITION_SNAP_THRESHOLD) {
|
|
snapY = centerY - height / 2;
|
|
showHorizontal = true;
|
|
horizontalLine = centerY;
|
|
}
|
|
|
|
return {
|
|
x: snapX,
|
|
y: snapY,
|
|
guideLines: {
|
|
vertical: verticalLine,
|
|
horizontal: horizontalLine,
|
|
showVertical,
|
|
showHorizontal,
|
|
},
|
|
};
|
|
};
|
|
|
|
// Handle element selection
|
|
const handleElementSelect = useCallback(
|
|
(elementId) => {
|
|
setSelectedElementId(elementId);
|
|
|
|
// Find the selected element
|
|
const element = timelineElements.find((el) => el.id === elementId);
|
|
|
|
// If it's a text element, emit text-element-selected event
|
|
if (element && element.type === 'text') {
|
|
emitter.emit('text-element-selected', element);
|
|
}
|
|
|
|
// Clear guide lines when selecting
|
|
setGuideLines({
|
|
vertical: null,
|
|
horizontal: null,
|
|
showVertical: false,
|
|
showHorizontal: false,
|
|
});
|
|
},
|
|
[emitter, timelineElements],
|
|
);
|
|
|
|
// Handle clicking on empty space to deselect
|
|
const handleStageClick = useCallback((e) => {
|
|
// If clicking on stage (not on an element), deselect
|
|
if (e.target === e.target.getStage()) {
|
|
setSelectedElementId(null);
|
|
setGuideLines({
|
|
vertical: null,
|
|
horizontal: null,
|
|
showVertical: false,
|
|
showHorizontal: false,
|
|
});
|
|
}
|
|
}, []);
|
|
|
|
// Handle drag events with snapping
|
|
const handleDragMove = useCallback(
|
|
(elementId, e) => {
|
|
const node = e.target;
|
|
const element = timelineElements.find((el) => el.id === elementId);
|
|
if (!element) return;
|
|
|
|
const width = node.width() * node.scaleX();
|
|
const height = node.height() * node.scaleY();
|
|
|
|
let topLeftX, topLeftY;
|
|
|
|
if (usesCenterPositioning(element.type)) {
|
|
// For center-positioned elements (video/image), convert center to top-left
|
|
const elementCenterX = node.x();
|
|
const elementCenterY = node.y();
|
|
topLeftX = elementCenterX - width / 2;
|
|
topLeftY = elementCenterY - height / 2;
|
|
} else {
|
|
// For top-left positioned elements (text)
|
|
topLeftX = node.x();
|
|
topLeftY = node.y();
|
|
}
|
|
|
|
const snapResult = calculateSnapAndGuides(elementId, topLeftX, topLeftY, width, height);
|
|
|
|
// Update guide lines
|
|
setGuideLines(snapResult.guideLines);
|
|
|
|
// Update state during drag
|
|
if (onElementUpdate) {
|
|
onElementUpdate(elementId, {
|
|
x: snapResult.x,
|
|
y: snapResult.y,
|
|
});
|
|
}
|
|
},
|
|
[onElementUpdate, dimensions.width, dimensions.height, timelineElements],
|
|
);
|
|
|
|
// Create drag bound function for real-time snapping
|
|
const createDragBoundFunc = useCallback(
|
|
(elementId) => {
|
|
return (pos) => {
|
|
const element = timelineElements.find((el) => el.id === elementId);
|
|
if (!element) return pos;
|
|
|
|
const node = elementRefs.current[elementId];
|
|
if (!node) return pos;
|
|
|
|
const width = node.width() * node.scaleX();
|
|
const height = node.height() * node.scaleY();
|
|
|
|
let topLeftX, topLeftY;
|
|
|
|
if (usesCenterPositioning(element.type)) {
|
|
// Convert center position to top-left for snapping calculations
|
|
topLeftX = pos.x - width / 2;
|
|
topLeftY = pos.y - height / 2;
|
|
} else {
|
|
topLeftX = pos.x;
|
|
topLeftY = pos.y;
|
|
}
|
|
|
|
const snapResult = calculateSnapAndGuides(elementId, topLeftX, topLeftY, width, height);
|
|
|
|
if (usesCenterPositioning(element.type)) {
|
|
// Convert back to center position
|
|
return {
|
|
x: snapResult.x + width / 2,
|
|
y: snapResult.y + height / 2,
|
|
};
|
|
} else {
|
|
return {
|
|
x: snapResult.x,
|
|
y: snapResult.y,
|
|
};
|
|
}
|
|
};
|
|
},
|
|
[timelineElements, dimensions.width, dimensions.height],
|
|
);
|
|
|
|
const handleDragEnd = useCallback(
|
|
(elementId, e) => {
|
|
const node = e.target;
|
|
const element = timelineElements.find((el) => el.id === elementId);
|
|
if (!element) return;
|
|
|
|
// Clear guide lines when drag ends
|
|
setGuideLines({
|
|
vertical: null,
|
|
horizontal: null,
|
|
showVertical: false,
|
|
showHorizontal: false,
|
|
});
|
|
|
|
// Final position update
|
|
const width = node.width() * node.scaleX();
|
|
const height = node.height() * node.scaleY();
|
|
|
|
let finalX, finalY;
|
|
if (usesCenterPositioning(element.type)) {
|
|
finalX = node.x() - width / 2;
|
|
finalY = node.y() - height / 2;
|
|
} else {
|
|
finalX = node.x();
|
|
finalY = node.y();
|
|
}
|
|
|
|
if (onElementUpdate) {
|
|
onElementUpdate(elementId, {
|
|
x: finalX,
|
|
y: finalY,
|
|
});
|
|
}
|
|
},
|
|
[onElementUpdate, timelineElements],
|
|
);
|
|
|
|
// Handle transform events - TRANSFORMER IS SOURCE OF TRUTH
|
|
const handleTransform = useCallback(
|
|
(elementId) => {
|
|
const node = elementRefs.current[elementId];
|
|
const element = timelineElements.find((el) => el.id === elementId);
|
|
if (!node || !onElementUpdate || !element) return;
|
|
|
|
// Get rotation - Konva handles snapping automatically with rotationSnaps
|
|
const rotation = node.rotation();
|
|
|
|
// Get the scale values from Konva
|
|
const scaleX = node.scaleX();
|
|
const scaleY = node.scaleY();
|
|
|
|
let newWidth, newHeight;
|
|
let updates = { rotation };
|
|
|
|
if (element.type === 'text') {
|
|
// For text: Convert scale to actual fontSize and reset scale to 1
|
|
const avgScale = Math.max(Math.abs(scaleX), Math.abs(scaleY));
|
|
const newFontSize = Math.round(element.fontSize * avgScale);
|
|
|
|
// Clamp font size to reasonable limits
|
|
const clampedFontSize = Math.max(8, Math.min(120, newFontSize));
|
|
|
|
updates.fontSize = clampedFontSize;
|
|
|
|
// Reset scale to 1 since we've applied it to fontSize
|
|
node.scaleX(1);
|
|
node.scaleY(1);
|
|
|
|
// Text dimensions are handled by Konva based on content and fontSize
|
|
newWidth = node.width();
|
|
newHeight = node.height();
|
|
} else {
|
|
// For images/videos, maintain aspect ratio by using the larger scale
|
|
const scale = Math.max(Math.abs(scaleX), Math.abs(scaleY));
|
|
newWidth = node.width() * scale;
|
|
newHeight = node.height() * scale;
|
|
|
|
// Reset scale to 1 and update dimensions to maintain aspect ratio
|
|
node.scaleX(1);
|
|
node.scaleY(1);
|
|
node.width(newWidth);
|
|
node.height(newHeight);
|
|
|
|
// Update offset for center rotation
|
|
node.offsetX(newWidth / 2);
|
|
node.offsetY(newHeight / 2);
|
|
|
|
updates.width = newWidth;
|
|
updates.height = newHeight;
|
|
}
|
|
|
|
// Calculate position for snapping
|
|
let topLeftX, topLeftY;
|
|
|
|
if (usesCenterPositioning(element.type)) {
|
|
// Convert center position to top-left for snapping
|
|
const centerX = node.x();
|
|
const centerY = node.y();
|
|
topLeftX = centerX - newWidth / 2;
|
|
topLeftY = centerY - newHeight / 2;
|
|
} else {
|
|
// Use position directly for text
|
|
topLeftX = node.x();
|
|
topLeftY = node.y();
|
|
}
|
|
|
|
// Check for position snapping during transform (but be less aggressive during rotation)
|
|
const isRotating = Math.abs(rotation % 90) > 5; // Not close to perpendicular
|
|
if (!isRotating) {
|
|
const snapResult = calculateSnapAndGuides(elementId, topLeftX, topLeftY, newWidth, newHeight);
|
|
|
|
if (Math.abs(snapResult.x - topLeftX) > 5 || Math.abs(snapResult.y - topLeftY) > 5) {
|
|
if (usesCenterPositioning(element.type)) {
|
|
// Convert back to center position
|
|
const newCenterX = snapResult.x + newWidth / 2;
|
|
const newCenterY = snapResult.y + newHeight / 2;
|
|
node.x(newCenterX);
|
|
node.y(newCenterY);
|
|
} else {
|
|
// Apply directly for text
|
|
node.x(snapResult.x);
|
|
node.y(snapResult.y);
|
|
}
|
|
setGuideLines(snapResult.guideLines);
|
|
topLeftX = snapResult.x;
|
|
topLeftY = snapResult.y;
|
|
}
|
|
} else {
|
|
// Clear guide lines during rotation
|
|
setGuideLines({
|
|
vertical: null,
|
|
horizontal: null,
|
|
showVertical: false,
|
|
showHorizontal: false,
|
|
});
|
|
}
|
|
|
|
// Add position to updates
|
|
updates.x = topLeftX;
|
|
updates.y = topLeftY;
|
|
|
|
// Update state with all calculated values
|
|
onElementUpdate(elementId, updates);
|
|
},
|
|
[onElementUpdate, dimensions.width, dimensions.height, timelineElements],
|
|
);
|
|
|
|
// Update transformer when selection changes
|
|
useEffect(() => {
|
|
if (transformerRef.current) {
|
|
const selectedNode = selectedElementId ? elementRefs.current[selectedElementId] : null;
|
|
|
|
if (selectedNode) {
|
|
transformerRef.current.nodes([selectedNode]);
|
|
transformerRef.current.getLayer().batchDraw();
|
|
} else {
|
|
transformerRef.current.nodes([]);
|
|
}
|
|
}
|
|
}, [selectedElementId, activeElements]);
|
|
|
|
return (
|
|
<div>
|
|
<Stage width={dimensions.width} height={dimensions.height} ref={stageRef} onClick={handleStageClick} onTap={handleStageClick}>
|
|
<Layer ref={layerRef}>
|
|
{activeElements.map((element) => {
|
|
const isSelected = selectedElementId === element.id;
|
|
|
|
if (element.type === 'video') {
|
|
const imageSource = getImageSource(element);
|
|
|
|
if (!imageSource) {
|
|
return null;
|
|
}
|
|
|
|
return (
|
|
<Image
|
|
key={element.id}
|
|
ref={(node) => {
|
|
if (node) {
|
|
elementRefs.current[element.id] = node;
|
|
}
|
|
}}
|
|
image={imageSource}
|
|
// Use center position for x,y when offset is set
|
|
x={element.x + element.width / 2}
|
|
y={element.y + element.height / 2}
|
|
width={element.width}
|
|
height={element.height}
|
|
// Set offset to center for proper rotation
|
|
offsetX={element.width / 2}
|
|
offsetY={element.height / 2}
|
|
rotation={element.rotation || 0}
|
|
draggable
|
|
dragBoundFunc={createDragBoundFunc(element.id)}
|
|
onClick={() => handleElementSelect(element.id)}
|
|
onTap={() => handleElementSelect(element.id)}
|
|
onDragMove={(e) => handleDragMove(element.id, e)}
|
|
onDragEnd={(e) => handleDragEnd(element.id, e)}
|
|
onTransform={() => handleTransform(element.id)}
|
|
// Visual feedback for selection
|
|
stroke={isSelected ? '#0066ff' : undefined}
|
|
strokeWidth={isSelected ? 2 : 0}
|
|
strokeScaleEnabled={false}
|
|
/>
|
|
);
|
|
} else if (element.type === 'text') {
|
|
return (
|
|
<Text
|
|
key={element.id}
|
|
ref={(node) => {
|
|
if (node) {
|
|
elementRefs.current[element.id] = node;
|
|
}
|
|
}}
|
|
text={element.text}
|
|
x={element.x}
|
|
y={element.y}
|
|
fontSize={element.fontSize}
|
|
fontStyle={getTextFontStyle(element)}
|
|
fontFamily={element.fontFamily || 'Arial'}
|
|
fill={element.fill || '#ffffff'}
|
|
stroke={element.strokeWidth > 0 ? element.stroke || '#000000' : undefined}
|
|
strokeWidth={element.strokeWidth * 3 || 0}
|
|
fillAfterStrokeEnabled={true}
|
|
strokeScaleEnabled={false}
|
|
rotation={element.rotation || 0}
|
|
// Center the text horizontally
|
|
align="center"
|
|
// Let text have natural width and height for multiline support
|
|
wrap="word"
|
|
// Always scale 1 - size changes go through fontSize
|
|
scaleX={1}
|
|
scaleY={1}
|
|
draggable
|
|
dragBoundFunc={createDragBoundFunc(element.id)}
|
|
onClick={() => handleElementSelect(element.id)}
|
|
onTap={() => handleElementSelect(element.id)}
|
|
onDragMove={(e) => handleDragMove(element.id, e)}
|
|
onDragEnd={(e) => handleDragEnd(element.id, e)}
|
|
onTransform={() => handleTransform(element.id)}
|
|
// Visual feedback for selection
|
|
/>
|
|
);
|
|
} else if (element.type === 'image' && element.imageElement && element.isImageReady) {
|
|
return (
|
|
<Image
|
|
key={element.id}
|
|
ref={(node) => {
|
|
if (node) {
|
|
elementRefs.current[element.id] = node;
|
|
}
|
|
}}
|
|
image={element.imageElement}
|
|
// Use center position for x,y when offset is set
|
|
x={element.x + element.width / 2}
|
|
y={element.y + element.height / 2}
|
|
width={element.width}
|
|
height={element.height}
|
|
// Set offset to center for proper rotation
|
|
offsetX={element.width / 2}
|
|
offsetY={element.height / 2}
|
|
rotation={element.rotation || 0}
|
|
draggable
|
|
dragBoundFunc={createDragBoundFunc(element.id)}
|
|
onClick={() => handleElementSelect(element.id)}
|
|
onTap={() => handleElementSelect(element.id)}
|
|
onDragMove={(e) => handleDragMove(element.id, e)}
|
|
onDragEnd={(e) => handleDragEnd(element.id, e)}
|
|
onTransform={() => handleTransform(element.id)}
|
|
// Visual feedback for selection
|
|
stroke={isSelected ? '#0066ff' : undefined}
|
|
strokeWidth={isSelected ? 2 : 0}
|
|
strokeScaleEnabled={false}
|
|
/>
|
|
);
|
|
}
|
|
return null;
|
|
})}
|
|
|
|
{/* Guide Lines Layer */}
|
|
{guideLines.showVertical && (
|
|
<Line
|
|
points={[guideLines.vertical, 0, guideLines.vertical, dimensions.height]}
|
|
stroke="#0066ff"
|
|
strokeWidth={1}
|
|
dash={[4, 4]}
|
|
opacity={0.8}
|
|
listening={false}
|
|
/>
|
|
)}
|
|
{guideLines.showHorizontal && (
|
|
<Line
|
|
points={[0, guideLines.horizontal, dimensions.width, guideLines.horizontal]}
|
|
stroke="#0066ff"
|
|
strokeWidth={1}
|
|
dash={[4, 4]}
|
|
opacity={0.8}
|
|
listening={false}
|
|
/>
|
|
)}
|
|
|
|
{/* Transformer for selected element */}
|
|
<Transformer
|
|
ref={transformerRef}
|
|
boundBoxFunc={(oldBox, newBox) => {
|
|
// Limit resize to prevent elements from becoming too small
|
|
if (newBox.width < 20 || newBox.height < 20) {
|
|
return oldBox;
|
|
}
|
|
return newBox;
|
|
}}
|
|
// Transformer styling - Figma-like appearance
|
|
borderStroke="#0066ff"
|
|
borderStrokeWidth={2}
|
|
anchorStroke="#0066ff"
|
|
anchorFill="white"
|
|
anchorSize={14}
|
|
anchorCornerRadius={2}
|
|
// Enable only corner anchors for aspect ratio
|
|
enabledAnchors={['top-left', 'top-right', 'bottom-right', 'bottom-left']}
|
|
// Rotation handle
|
|
rotateAnchorOffset={30}
|
|
// Built-in Konva rotation snapping
|
|
rotationSnaps={[0, 90, 180, 270]}
|
|
rotationSnapTolerance={8}
|
|
// Clear guide lines when transform ends
|
|
onTransformEnd={() => {
|
|
setGuideLines({
|
|
vertical: null,
|
|
horizontal: null,
|
|
showVertical: false,
|
|
showHorizontal: false,
|
|
});
|
|
}}
|
|
// Style the rotation anchor to be circular
|
|
anchorStyleFunc={(anchor) => {
|
|
if (anchor.hasName('.rotater')) {
|
|
// Make it circular by setting corner radius to half the width
|
|
anchor.cornerRadius(anchor.width() / 2);
|
|
anchor.fill('#0066ff');
|
|
anchor.stroke('white');
|
|
anchor.strokeWidth(1);
|
|
}
|
|
}}
|
|
/>
|
|
</Layer>
|
|
</Stage>
|
|
</div>
|
|
);
|
|
};
|
|
|
|
export default VideoPreview;
|