298 lines
9.2 KiB
JavaScript
298 lines
9.2 KiB
JavaScript
var __defProp = Object.defineProperty;
|
|
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
|
|
var __getOwnPropNames = Object.getOwnPropertyNames;
|
|
var __hasOwnProp = Object.prototype.hasOwnProperty;
|
|
var __export = (target, all) => {
|
|
for (var name in all)
|
|
__defProp(target, name, { get: all[name], enumerable: true });
|
|
};
|
|
var __copyProps = (to, from, except, desc) => {
|
|
if (from && typeof from === "object" || typeof from === "function") {
|
|
for (let key of __getOwnPropNames(from))
|
|
if (!__hasOwnProp.call(to, key) && key !== except)
|
|
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
|
|
}
|
|
return to;
|
|
};
|
|
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
|
|
var stdin_exports = {};
|
|
__export(stdin_exports, {
|
|
default: () => stdin_default
|
|
});
|
|
module.exports = __toCommonJS(stdin_exports);
|
|
var import_vue = require("vue");
|
|
var import_vue2 = require("vue");
|
|
var import_utils = require("../utils");
|
|
var import_use_touch = require("../composables/use-touch");
|
|
var import_use = require("@vant/use");
|
|
var import_image = require("../image");
|
|
var import_loading = require("../loading");
|
|
var import_swipe_item = require("../swipe-item");
|
|
const getDistance = (touches) => Math.sqrt((touches[0].clientX - touches[1].clientX) ** 2 + (touches[0].clientY - touches[1].clientY) ** 2);
|
|
const bem = (0, import_utils.createNamespace)("image-preview")[1];
|
|
var stdin_default = (0, import_vue2.defineComponent)({
|
|
props: {
|
|
src: String,
|
|
show: Boolean,
|
|
active: Number,
|
|
minZoom: (0, import_utils.makeRequiredProp)(import_utils.numericProp),
|
|
maxZoom: (0, import_utils.makeRequiredProp)(import_utils.numericProp),
|
|
rootWidth: (0, import_utils.makeRequiredProp)(Number),
|
|
rootHeight: (0, import_utils.makeRequiredProp)(Number),
|
|
disableZoom: Boolean
|
|
},
|
|
emits: ["scale", "close", "longPress"],
|
|
setup(props, {
|
|
emit,
|
|
slots
|
|
}) {
|
|
const state = (0, import_vue2.reactive)({
|
|
scale: 1,
|
|
moveX: 0,
|
|
moveY: 0,
|
|
moving: false,
|
|
zooming: false,
|
|
imageRatio: 0,
|
|
displayWidth: 0,
|
|
displayHeight: 0
|
|
});
|
|
const touch = (0, import_use_touch.useTouch)();
|
|
const swipeItem = (0, import_vue2.ref)();
|
|
const vertical = (0, import_vue2.computed)(() => {
|
|
const {
|
|
rootWidth,
|
|
rootHeight
|
|
} = props;
|
|
const rootRatio = rootHeight / rootWidth;
|
|
return state.imageRatio > rootRatio;
|
|
});
|
|
const imageStyle = (0, import_vue2.computed)(() => {
|
|
const {
|
|
scale,
|
|
moveX,
|
|
moveY,
|
|
moving,
|
|
zooming
|
|
} = state;
|
|
const style = {
|
|
transitionDuration: zooming || moving ? "0s" : ".3s"
|
|
};
|
|
if (scale !== 1) {
|
|
const offsetX = moveX / scale;
|
|
const offsetY = moveY / scale;
|
|
style.transform = `scale(${scale}, ${scale}) translate(${offsetX}px, ${offsetY}px)`;
|
|
}
|
|
return style;
|
|
});
|
|
const maxMoveX = (0, import_vue2.computed)(() => {
|
|
if (state.imageRatio) {
|
|
const {
|
|
rootWidth,
|
|
rootHeight
|
|
} = props;
|
|
const displayWidth = vertical.value ? rootHeight / state.imageRatio : rootWidth;
|
|
return Math.max(0, (state.scale * displayWidth - rootWidth) / 2);
|
|
}
|
|
return 0;
|
|
});
|
|
const maxMoveY = (0, import_vue2.computed)(() => {
|
|
if (state.imageRatio) {
|
|
const {
|
|
rootWidth,
|
|
rootHeight
|
|
} = props;
|
|
const displayHeight = vertical.value ? rootHeight : rootWidth * state.imageRatio;
|
|
return Math.max(0, (state.scale * displayHeight - rootHeight) / 2);
|
|
}
|
|
return 0;
|
|
});
|
|
const setScale = (scale) => {
|
|
scale = (0, import_utils.clamp)(scale, +props.minZoom, +props.maxZoom + 1);
|
|
if (scale !== state.scale) {
|
|
state.scale = scale;
|
|
emit("scale", {
|
|
scale,
|
|
index: props.active
|
|
});
|
|
}
|
|
};
|
|
const resetScale = () => {
|
|
setScale(1);
|
|
state.moveX = 0;
|
|
state.moveY = 0;
|
|
};
|
|
const toggleScale = () => {
|
|
const scale = state.scale > 1 ? 1 : 2;
|
|
setScale(scale);
|
|
state.moveX = 0;
|
|
state.moveY = 0;
|
|
};
|
|
let fingerNum;
|
|
let startMoveX;
|
|
let startMoveY;
|
|
let startScale;
|
|
let startDistance;
|
|
let doubleTapTimer;
|
|
let touchStartTime;
|
|
let isImageMoved = false;
|
|
const onTouchStart = (event) => {
|
|
const {
|
|
touches
|
|
} = event;
|
|
fingerNum = touches.length;
|
|
if (fingerNum === 2 && props.disableZoom) {
|
|
return;
|
|
}
|
|
const {
|
|
offsetX
|
|
} = touch;
|
|
touch.start(event);
|
|
startMoveX = state.moveX;
|
|
startMoveY = state.moveY;
|
|
touchStartTime = Date.now();
|
|
isImageMoved = false;
|
|
state.moving = fingerNum === 1 && state.scale !== 1;
|
|
state.zooming = fingerNum === 2 && !offsetX.value;
|
|
if (state.zooming) {
|
|
startScale = state.scale;
|
|
startDistance = getDistance(event.touches);
|
|
}
|
|
};
|
|
const onTouchMove = (event) => {
|
|
const {
|
|
touches
|
|
} = event;
|
|
touch.move(event);
|
|
if (state.moving) {
|
|
const {
|
|
deltaX,
|
|
deltaY
|
|
} = touch;
|
|
const moveX = deltaX.value + startMoveX;
|
|
const moveY = deltaY.value + startMoveY;
|
|
if ((moveX > maxMoveX.value || moveX < -maxMoveX.value) && !isImageMoved && touch.isHorizontal()) {
|
|
state.moving = false;
|
|
return;
|
|
}
|
|
isImageMoved = true;
|
|
(0, import_utils.preventDefault)(event, true);
|
|
state.moveX = (0, import_utils.clamp)(moveX, -maxMoveX.value, maxMoveX.value);
|
|
state.moveY = (0, import_utils.clamp)(moveY, -maxMoveY.value, maxMoveY.value);
|
|
}
|
|
if (state.zooming) {
|
|
(0, import_utils.preventDefault)(event, true);
|
|
if (touches.length === 2) {
|
|
const distance = getDistance(touches);
|
|
const scale = startScale * distance / startDistance;
|
|
setScale(scale);
|
|
}
|
|
}
|
|
};
|
|
const checkTap = () => {
|
|
if (fingerNum > 1) {
|
|
return;
|
|
}
|
|
const {
|
|
offsetX,
|
|
offsetY
|
|
} = touch;
|
|
const deltaTime = Date.now() - touchStartTime;
|
|
const TAP_TIME = 250;
|
|
const TAP_OFFSET = 5;
|
|
if (offsetX.value < TAP_OFFSET && offsetY.value < TAP_OFFSET) {
|
|
if (deltaTime < TAP_TIME) {
|
|
if (doubleTapTimer) {
|
|
clearTimeout(doubleTapTimer);
|
|
doubleTapTimer = null;
|
|
toggleScale();
|
|
} else {
|
|
doubleTapTimer = setTimeout(() => {
|
|
emit("close");
|
|
doubleTapTimer = null;
|
|
}, TAP_TIME);
|
|
}
|
|
} else if (deltaTime > import_utils.LONG_PRESS_START_TIME) {
|
|
emit("longPress");
|
|
}
|
|
}
|
|
};
|
|
const onTouchEnd = (event) => {
|
|
let stopPropagation = false;
|
|
if (state.moving || state.zooming) {
|
|
stopPropagation = true;
|
|
if (state.moving && startMoveX === state.moveX && startMoveY === state.moveY) {
|
|
stopPropagation = false;
|
|
}
|
|
if (!event.touches.length) {
|
|
if (state.zooming) {
|
|
state.moveX = (0, import_utils.clamp)(state.moveX, -maxMoveX.value, maxMoveX.value);
|
|
state.moveY = (0, import_utils.clamp)(state.moveY, -maxMoveY.value, maxMoveY.value);
|
|
state.zooming = false;
|
|
}
|
|
state.moving = false;
|
|
startMoveX = 0;
|
|
startMoveY = 0;
|
|
startScale = 1;
|
|
if (state.scale < 1) {
|
|
resetScale();
|
|
}
|
|
const maxZoom = +props.maxZoom;
|
|
if (state.scale > maxZoom) {
|
|
state.scale = maxZoom;
|
|
}
|
|
}
|
|
}
|
|
(0, import_utils.preventDefault)(event, stopPropagation);
|
|
checkTap();
|
|
touch.reset();
|
|
};
|
|
const onLoad = (event) => {
|
|
const {
|
|
naturalWidth,
|
|
naturalHeight
|
|
} = event.target;
|
|
state.imageRatio = naturalHeight / naturalWidth;
|
|
};
|
|
(0, import_vue2.watch)(() => props.active, resetScale);
|
|
(0, import_vue2.watch)(() => props.show, (value) => {
|
|
if (!value) {
|
|
resetScale();
|
|
}
|
|
});
|
|
(0, import_use.useEventListener)("touchmove", onTouchMove, {
|
|
target: (0, import_vue2.computed)(() => {
|
|
var _a;
|
|
return (_a = swipeItem.value) == null ? void 0 : _a.$el;
|
|
})
|
|
});
|
|
return () => {
|
|
const imageSlots = {
|
|
loading: () => (0, import_vue.createVNode)(import_loading.Loading, {
|
|
"type": "spinner"
|
|
}, null)
|
|
};
|
|
return (0, import_vue.createVNode)(import_swipe_item.SwipeItem, {
|
|
"ref": swipeItem,
|
|
"class": bem("swipe-item"),
|
|
"onTouchstartPassive": onTouchStart,
|
|
"onTouchend": onTouchEnd,
|
|
"onTouchcancel": onTouchEnd
|
|
}, {
|
|
default: () => [slots.image ? (0, import_vue.createVNode)("div", {
|
|
"class": bem("image-wrap")
|
|
}, [slots.image({
|
|
src: props.src
|
|
})]) : (0, import_vue.createVNode)(import_image.Image, {
|
|
"src": props.src,
|
|
"fit": "contain",
|
|
"class": bem("image", {
|
|
vertical: vertical.value
|
|
}),
|
|
"style": imageStyle.value,
|
|
"onLoad": onLoad
|
|
}, imageSlots)]
|
|
});
|
|
};
|
|
}
|
|
});
|