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f56a29b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | import { useState, useCallback, type RefObject } from 'react';
import { useKeyboardStore } from '@/lib/store/keyboard';
import { useCanvasStore } from '@/lib/store';
import type { PPTElement } from '@/lib/types/slides';
import { getElementRange } from '@/lib/utils/element';
export function useMouseSelection(
elementListRef: React.RefObject<PPTElement[]>,
viewportRef: RefObject<HTMLElement | null>,
) {
const [mouseSelectionVisible, setMouseSelectionVisible] = useState(false);
const [mouseSelectionQuadrant, setMouseSelectionQuadrant] = useState(1);
const [mouseSelection, setMouseSelection] = useState({
top: 0,
left: 0,
width: 0,
height: 0,
});
const canvasScale = useCanvasStore.use.canvasScale();
const hiddenElementIdList = useCanvasStore.use.hiddenElementIdList();
const setActiveElementIdList = useCanvasStore.use.setActiveElementIdList();
const ctrlOrShiftKeyActive = useKeyboardStore((state) => state.ctrlOrShiftKeyActive());
// Update mouse selection range
const updateMouseSelection = useCallback(
(e: React.MouseEvent) => {
if (!viewportRef.current) return;
let isMouseDown = true;
const viewportRect = viewportRef.current.getBoundingClientRect();
const minSelectionRange = 5;
const startPageX = e.pageX;
const startPageY = e.pageY;
const left = (startPageX - viewportRect.x) / canvasScale;
const top = (startPageY - viewportRect.y) / canvasScale;
// Initialize selection start position and defaults
setMouseSelection({
top: top,
left: left,
width: 0,
height: 0,
});
setMouseSelectionVisible(false);
setMouseSelectionQuadrant(4);
const handleMouseMove = (e: MouseEvent) => {
if (!isMouseDown) return;
const currentPageX = e.pageX;
const currentPageY = e.pageY;
const offsetWidth = (currentPageX - startPageX) / canvasScale;
const offsetHeight = (currentPageY - startPageY) / canvasScale;
const width = Math.abs(offsetWidth);
const height = Math.abs(offsetHeight);
if (width < minSelectionRange || height < minSelectionRange) return;
// Determine mouse selection (movement) direction
// Classified by quadrant position, e.g. bottom-right is quadrant 4
let quadrant = 0;
if (offsetWidth > 0 && offsetHeight > 0) quadrant = 4;
else if (offsetWidth < 0 && offsetHeight < 0) quadrant = 2;
else if (offsetWidth > 0 && offsetHeight < 0) quadrant = 1;
else if (offsetWidth < 0 && offsetHeight > 0) quadrant = 3;
// Update selection range
setMouseSelection((prev) => ({
...prev,
width: width,
height: height,
}));
setMouseSelectionVisible(true);
setMouseSelectionQuadrant(quadrant);
};
const handleMouseUp = () => {
document.onmousemove = null;
document.onmouseup = null;
isMouseDown = false;
// Check which canvas elements are within the mouse selection range and set them as selected
let inRangeElementList: PPTElement[] = [];
for (const element of elementListRef.current) {
const mouseSelectionLeft = mouseSelection.left;
const mouseSelectionTop = mouseSelection.top;
const mouseSelectionWidth = mouseSelection.width;
const mouseSelectionHeight = mouseSelection.height;
const { minX, maxX, minY, maxY } = getElementRange(element);
// Inclusion check differs for each quadrant direction
let isInclude = false;
if (ctrlOrShiftKeyActive) {
if (mouseSelectionQuadrant === 4) {
isInclude =
maxX > mouseSelectionLeft &&
minX < mouseSelectionLeft + mouseSelectionWidth &&
maxY > mouseSelectionTop &&
minY < mouseSelectionTop + mouseSelectionHeight;
} else if (mouseSelectionQuadrant === 2) {
isInclude =
maxX > mouseSelectionLeft - mouseSelectionWidth &&
minX < mouseSelectionLeft - mouseSelectionWidth + mouseSelectionWidth &&
maxY > mouseSelectionTop - mouseSelectionHeight &&
minY < mouseSelectionTop - mouseSelectionHeight + mouseSelectionHeight;
} else if (mouseSelectionQuadrant === 1) {
isInclude =
maxX > mouseSelectionLeft &&
minX < mouseSelectionLeft + mouseSelectionWidth &&
maxY > mouseSelectionTop - mouseSelectionHeight &&
minY < mouseSelectionTop - mouseSelectionHeight + mouseSelectionHeight;
} else if (mouseSelectionQuadrant === 3) {
isInclude =
maxX > mouseSelectionLeft - mouseSelectionWidth &&
minX < mouseSelectionLeft - mouseSelectionWidth + mouseSelectionWidth &&
maxY > mouseSelectionTop &&
minY < mouseSelectionTop + mouseSelectionHeight;
}
} else {
if (mouseSelectionQuadrant === 4) {
isInclude =
minX > mouseSelectionLeft &&
maxX < mouseSelectionLeft + mouseSelectionWidth &&
minY > mouseSelectionTop &&
maxY < mouseSelectionTop + mouseSelectionHeight;
} else if (mouseSelectionQuadrant === 2) {
isInclude =
minX > mouseSelectionLeft - mouseSelectionWidth &&
maxX < mouseSelectionLeft - mouseSelectionWidth + mouseSelectionWidth &&
minY > mouseSelectionTop - mouseSelectionHeight &&
maxY < mouseSelectionTop - mouseSelectionHeight + mouseSelectionHeight;
} else if (mouseSelectionQuadrant === 1) {
isInclude =
minX > mouseSelectionLeft &&
maxX < mouseSelectionLeft + mouseSelectionWidth &&
minY > mouseSelectionTop - mouseSelectionHeight &&
maxY < mouseSelectionTop - mouseSelectionHeight + mouseSelectionHeight;
} else if (mouseSelectionQuadrant === 3) {
isInclude =
minX > mouseSelectionLeft - mouseSelectionWidth &&
maxX < mouseSelectionLeft - mouseSelectionWidth + mouseSelectionWidth &&
minY > mouseSelectionTop &&
maxY < mouseSelectionTop + mouseSelectionHeight;
}
}
// Locked or hidden elements should not be selected even if within range
if (isInclude && !element.lock && !hiddenElementIdList.includes(element.id))
inRangeElementList.push(element);
}
// If grouped elements are in range, all members of the group must be in range to be selected
inRangeElementList = inRangeElementList.filter((inRangeElement) => {
if (inRangeElement.groupId) {
const inRangeElementIdList = inRangeElementList.map(
(inRangeElement) => inRangeElement.id,
);
const groupElementList = elementListRef.current.filter(
(element) => element.groupId === inRangeElement.groupId,
);
return groupElementList.every((groupElement) =>
inRangeElementIdList.includes(groupElement.id),
);
}
return true;
});
const inRangeElementIdList = inRangeElementList.map((inRangeElement) => inRangeElement.id);
setActiveElementIdList(inRangeElementIdList);
setMouseSelectionVisible(false);
};
document.onmousemove = handleMouseMove;
document.onmouseup = handleMouseUp;
},
// eslint-disable-next-line react-hooks/exhaustive-deps -- Intentionally excludes mouseSelection state to avoid infinite re-creation
[
viewportRef,
canvasScale,
ctrlOrShiftKeyActive,
hiddenElementIdList,
elementListRef,
setActiveElementIdList,
],
);
return {
mouseSelection,
mouseSelectionVisible,
mouseSelectionQuadrant,
updateMouseSelection,
};
}
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