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4 files changed, 759 insertions, 0 deletions

diff --git a/src/site/components/grid/waterfall/Waterfall.vue b/src/site/components/grid/waterfall/Waterfall.vue
new file mode 100644
index 0000000..9827075
--- /dev/null
+++ b/src/site/components/grid/waterfall/Waterfall.vue
@@ -0,0 +1,181 @@
+<style>
+	.waterfall {
+		position: relative;
+	}
+</style>
+<template>
+	<div class="waterfall">
+		<slot/>
+	</div>
+</template>
+<script>
+// import {quickSort, getMinIndex, _, sum} from './util'
+
+const quickSort = (arr, type) => {
+	let left = [];
+	let right = [];
+	let povis;
+	if (arr.length <= 1) {
+		return arr;
+	}
+	povis = arr[0];
+	for (let i = 1; i < arr.length; i++) {
+		if (arr[i][type] < povis[type]) {
+			left.push(arr[i]);
+		} else {
+			right.push(arr[i]);
+		}
+	}
+	return quickSort(left, type).concat(povis, quickSort(right, type))
+};
+
+const getMinIndex = arr => {
+	let pos = 0;
+	for (let i = 0; i < arr.length; i++) {
+		if (arr[pos] > arr[i]) {
+			pos = i;
+		}
+	}
+	return pos;
+};
+
+const _ = {
+	on(el, type, func, capture = false) {
+		el.addEventListener(type, func, capture);
+	},
+	off(el, type, func, capture = false) {
+		el.removeEventListener(type, func, capture);
+	}
+};
+
+const sum = arr => arr.reduce((sum, val) => sum + val);
+export default {
+	name: 'Waterfall',
+	props: {
+		gutterWidth: {
+			type: Number,
+			default: 0
+		},
+		gutterHeight: {
+			type: Number,
+			default: 0
+		},
+		resizable: {
+			type: Boolean,
+			default: true
+		},
+		align: {
+			type: String,
+			default: 'center'
+		},
+		fixWidth: {
+			type: Number
+		},
+		minCol: {
+			type: Number,
+			default: 1
+		},
+		maxCol: {
+			type: Number
+		},
+		percent: {
+			type: Array
+		}
+	},
+	data() {
+		return {
+			timer: null,
+			colNum: 0,
+			lastWidth: 0,
+			percentWidthArr: []
+		};
+	},
+	created() {
+		this.$on('itemRender', () => {
+			if (this.timer) {
+				clearTimeout(this.timer);
+			}
+			this.timer = setTimeout(() => {
+				this.render();
+			}, 0);
+		});
+	},
+	mounted() {
+		this.resizeHandle();
+		this.$watch('resizable', this.resizeHandle);
+	},
+	methods: {
+		calulate(arr) {
+			let pageWidth = this.fixWidth ? this.fixWidth : this.$el.offsetWidth;
+			// 百分比布局计算
+			if (this.percent) {
+				this.colNum = this.percent.length;
+				const total = sum(this.percent);
+				this.percentWidthArr = this.percent.map(value => (value / total) * pageWidth);
+				this.lastWidth = 0;
+			// 正常布局计算
+			} else {
+				this.colNum = parseInt(pageWidth / (arr.width + this.gutterWidth));
+				if (this.minCol && this.colNum < this.minCol) {
+					this.colNum = this.minCol;
+					this.lastWidth = 0;
+				} else if (this.maxCol && this.colNum > this.maxCol) {
+					this.colNum = this.maxCol;
+					this.lastWidth = pageWidth - (arr.width + this.gutterWidth) * this.colNum + this.gutterWidth;
+				} else {
+					this.lastWidth = pageWidth - (arr.width + this.gutterWidth) * this.colNum + this.gutterWidth;
+				}
+			}
+		},
+		resizeHandle() {
+			if (this.resizable) {
+				_.on(window, 'resize', this.render, false);
+			} else {
+				_.off(window, 'resize', this.render, false);
+			}
+		},
+		render() {
+			// 重新排序
+			let childArr = [];
+			childArr = this.$children.map(child => child.getMeta());
+			childArr = quickSort(childArr, 'order');
+			// 计算列数
+			this.calulate(childArr[0])
+			let offsetArr = Array(this.colNum).fill(0);
+			// 渲染
+			childArr.forEach(child => {
+				let position = getMinIndex(offsetArr);
+				// 百分比布局渲染
+				if (this.percent) {
+					let left = 0;
+					child.el.style.width = `${this.percentWidthArr[position]}px`;
+					if (position === 0) {
+						left = 0;
+					} else {
+						for (let i = 0; i < position; i++) {
+							left += this.percentWidthArr[i];
+						}
+					}
+					child.el.style.left = `${left}px`;
+				// 正常布局渲染
+				} else {
+					if (this.align === 'left') { // eslint-disable-line no-lonely-if
+						child.el.style.left = `${position * (child.width + this.gutterWidth)}px`;
+					} else if (this.align === 'right') {
+						child.el.style.left = `${position * (child.width + this.gutterWidth) + this.lastWidth}px`;
+					} else {
+						child.el.style.left = `${position * (child.width + this.gutterWidth) + this.lastWidth / 2}px`;
+					}
+				}
+				if (child.height === 0) {
+					return;
+				}
+				child.el.style.top = `${offsetArr[position]}px`;
+				offsetArr[position] += (child.height + this.gutterHeight);
+				this.$el.style.height = `${Math.max.apply(Math, offsetArr)}px`;
+			});
+			this.$emit('rendered', this);
+		}
+	}
+};
+</script>
diff --git a/src/site/components/grid/waterfall/WaterfallItem.vue b/src/site/components/grid/waterfall/WaterfallItem.vue
new file mode 100644
index 0000000..597cca6
--- /dev/null
+++ b/src/site/components/grid/waterfall/WaterfallItem.vue
@@ -0,0 +1,60 @@
+<style>
+	.waterfall-item {
+		position: absolute;
+	}
+</style>
+<template>
+	<div class="waterfall-item">
+		<slot/>
+	</div>
+</template>
+<script>
+import imagesLoaded from 'imagesloaded';
+export default {
+	name: 'WaterfallItem',
+	props: {
+		order: {
+			type: Number,
+			default: 0
+		},
+		width: {
+			type: Number,
+			default: 150
+		}
+	},
+	data() {
+		return {
+			itemWidth: 0,
+			height: 0
+		};
+	},
+	created() {
+		this.$watch(() => this.height, this.emit);
+	},
+	mounted() {
+		this.$el.style.display = 'none';
+		this.$el.style.width = `${this.width}px`;
+		this.emit();
+		imagesLoaded(this.$el, () => {
+			this.$el.style.left = '-9999px';
+			this.$el.style.top = '-9999px';
+			this.$el.style.display = 'block';
+			this.height = this.$el.offsetHeight;
+			this.itemWidth = this.$el.offsetWidth;
+		});
+	},
+	methods: {
+		emit() {
+			this.$parent.$emit('itemRender');
+		},
+		getMeta() {
+			return {
+				el: this.$el,
+				height: this.height,
+				width: this.itemWidth,
+				order: this.order
+			};
+		}
+	}
+}
+</script>
diff --git a/src/site/components/grid/waterfall/old/waterfall-slot.vue b/src/site/components/grid/waterfall/old/waterfall-slot.vue
new file mode 100644
index 0000000..07ca268
--- /dev/null
+++ b/src/site/components/grid/waterfall/old/waterfall-slot.vue
@@ -0,0 +1,76 @@
+<template>
+  <div class="vue-waterfall-slot" v-show="isShow">
+    <slot></slot>
+  </div>
+</template>
+
+<style>
+.vue-waterfall-slot {
+  position: absolute;
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+</style>
+
+<script>
+
+export default {
+  data: () => ({
+    isShow: false
+  }),
+  props: {
+    width: {
+      required: true,
+      validator: (val) => val >= 0
+    },
+    height: {
+      required: true,
+      validator: (val) => val >= 0
+    },
+    order: {
+      default: 0
+    },
+    moveClass: {
+      default: ''
+    }
+  },
+  methods: {
+    notify () {
+      this.$parent.$emit('reflow', this)
+    },
+    getMeta () {
+      return {
+        vm: this,
+        node: this.$el,
+        order: this.order,
+        width: this.width,
+        height: this.height,
+        moveClass: this.moveClass
+      }
+    }
+  },
+  created () {
+    this.rect = {
+      top: 0,
+      left: 0,
+      width: 0,
+      height: 0
+    }
+    this.$watch(() => (
+      this.width,
+      this.height
+    ), this.notify)
+  },
+  mounted () {
+    this.$parent.$once('reflowed', () => {
+      this.isShow = true
+    })
+    this.notify()
+  },
+  destroyed () {
+    this.notify()
+  }
+}
+
+</script>
diff --git a/src/site/components/grid/waterfall/old/waterfall.vue b/src/site/components/grid/waterfall/old/waterfall.vue
new file mode 100644
index 0000000..84e3c98
--- /dev/null
+++ b/src/site/components/grid/waterfall/old/waterfall.vue
@@ -0,0 +1,442 @@
+<template>
+  <div class="vue-waterfall" :style="style">
+    <slot></slot>
+  </div>
+</template>
+
+<style>
+.vue-waterfall {
+  position: relative;
+  /*overflow: hidden; cause clientWidth = 0 in IE if height not bigger than 0 */
+}
+</style>
+
+<script>
+
+const MOVE_CLASS_PROP = '_wfMoveClass'
+
+export default {
+  props: {
+    autoResize: {
+      default: true
+    },
+    interval: {
+      default: 200,
+      validator: (val) => val >= 0
+    },
+    align: {
+      default: 'left',
+      validator: (val) => ~['left', 'right', 'center'].indexOf(val)
+    },
+    line: {
+      default: 'v',
+      validator: (val) => ~['v', 'h'].indexOf(val)
+    },
+    lineGap: {
+      required: true,
+      validator: (val) => val >= 0
+    },
+    minLineGap: {
+      validator: (val) => val >= 0
+    },
+    maxLineGap: {
+      validator: (val) => val >= 0
+    },
+    singleMaxWidth: {
+      validator: (val) => val >= 0
+    },
+    fixedHeight: {
+      default: false
+    },
+    grow: {
+      validator: (val) => val instanceof Array
+    },
+    watch: {
+      default: () => ({})
+    }
+  },
+  data: () => ({
+    style: {
+      height: '',
+      overflow: ''
+    },
+    token: null
+  }),
+  methods: {
+    reflowHandler,
+    autoResizeHandler,
+    reflow
+  },
+  created () {
+    this.virtualRects = []
+    this.$on('reflow', () => {
+      this.reflowHandler()
+    })
+    this.$watch(() => (
+      this.align,
+      this.line,
+      this.lineGap,
+      this.minLineGap,
+      this.maxLineGap,
+      this.singleMaxWidth,
+      this.fixedHeight,
+      this.watch
+    ), this.reflowHandler)
+    this.$watch('grow', this.reflowHandler)
+  },
+  mounted () {
+    this.$watch('autoResize', this.autoResizeHandler)
+    on(this.$el, getTransitionEndEvent(), tidyUpAnimations, true)
+    this.autoResizeHandler(this.autoResize)
+  },
+  beforeDestroy () {
+    this.autoResizeHandler(false)
+    off(this.$el, getTransitionEndEvent(), tidyUpAnimations, true)
+  }
+}
+
+function autoResizeHandler (autoResize) {
+  if (autoResize === false || !this.autoResize) {
+    off(window, 'resize', this.reflowHandler, false)
+  } else {
+    on(window, 'resize', this.reflowHandler, false)
+  }
+}
+
+function tidyUpAnimations (event) {
+  let node = event.target
+  let moveClass = node[MOVE_CLASS_PROP]
+  if (moveClass) {
+    removeClass(node, moveClass)
+  }
+}
+
+function reflowHandler () {
+  clearTimeout(this.token)
+  this.token = setTimeout(this.reflow, this.interval)
+}
+
+function reflow () {
+  if (!this.$el) { return }
+  let width = this.$el.clientWidth
+  let metas = this.$children.map((slot) => slot.getMeta())
+  metas.sort((a, b) => a.order - b.order)
+  this.virtualRects = metas.map(() => ({}))
+  calculate(this, metas, this.virtualRects)
+  setTimeout(() => {
+    if (isScrollBarVisibilityChange(this.$el, width)) {
+      calculate(this, metas, this.virtualRects)
+    }
+    this.style.overflow = 'hidden'
+    render(this.virtualRects, metas)
+    this.$emit('reflowed', this)
+  }, 0)
+}
+
+function isScrollBarVisibilityChange (el, lastClientWidth) {
+  return lastClientWidth !== el.clientWidth
+}
+
+function calculate (vm, metas, styles) {
+  let options = getOptions(vm)
+  let processor = vm.line === 'h' ? horizontalLineProcessor : verticalLineProcessor
+  processor.calculate(vm, options, metas, styles)
+}
+
+function getOptions (vm) {
+  const maxLineGap = vm.maxLineGap ? +vm.maxLineGap : vm.lineGap
+  return {
+    align: ~['left', 'right', 'center'].indexOf(vm.align) ? vm.align : 'left',
+    line: ~['v', 'h'].indexOf(vm.line) ? vm.line : 'v',
+    lineGap: +vm.lineGap,
+    minLineGap: vm.minLineGap ? +vm.minLineGap : vm.lineGap,
+    maxLineGap: maxLineGap,
+    singleMaxWidth: Math.max(vm.singleMaxWidth || 0, maxLineGap),
+    fixedHeight: !!vm.fixedHeight,
+    grow: vm.grow && vm.grow.map(val => +val)
+  }
+}
+
+var verticalLineProcessor = (() => {
+
+  function calculate (vm, options, metas, rects) {
+    let width = vm.$el.clientWidth
+    let grow = options.grow
+    let strategy = grow
+      ? getRowStrategyWithGrow(width, grow)
+      : getRowStrategy(width, options)
+    let tops = getArrayFillWith(0, strategy.count)
+    metas.forEach((meta, index) => {
+      let offset = tops.reduce((last, top, i) => top < tops[last] ? i : last, 0)
+      let width = strategy.width[offset % strategy.count]
+      let rect = rects[index]
+      rect.top = tops[offset]
+      rect.left = strategy.left + (offset ? sum(strategy.width.slice(0, offset)) : 0)
+      rect.width = width
+      rect.height = meta.height * (options.fixedHeight ? 1 : width / meta.width)
+      tops[offset] = tops[offset] + rect.height
+    })
+    vm.style.height = Math.max.apply(Math, tops) + 'px'
+  }
+
+  function getRowStrategy (width, options) {
+    let count = width / options.lineGap
+    let slotWidth
+    if (options.singleMaxWidth >= width) {
+      count = 1
+      slotWidth = Math.max(width, options.minLineGap)
+    } else {
+      let maxContentWidth = options.maxLineGap * ~~count
+      let minGreedyContentWidth = options.minLineGap * ~~(count + 1)
+      let canFit = maxContentWidth >= width
+      let canFitGreedy = minGreedyContentWidth <= width
+      if (canFit && canFitGreedy) {
+        count = Math.round(count)
+        slotWidth = width / count
+      } else if (canFit) {
+        count = ~~count
+        slotWidth = width / count
+      } else if (canFitGreedy) {
+        count = ~~(count + 1)
+        slotWidth = width / count
+      } else {
+        count = ~~count
+        slotWidth = options.maxLineGap
+      }
+      if (count === 1) {
+        slotWidth = Math.min(width, options.singleMaxWidth)
+        slotWidth = Math.max(slotWidth, options.minLineGap)
+      }
+    }
+    return {
+      width: getArrayFillWith(slotWidth, count),
+      count: count,
+      left: getLeft(width, slotWidth * count, options.align)
+    }
+  }
+
+  function getRowStrategyWithGrow (width, grow) {
+    let total = sum(grow)
+    return {
+      width: grow.map(val => width * val / total),
+      count: grow.length,
+      left: 0
+    }
+  }
+
+  return {
+    calculate
+  }
+
+})()
+
+var horizontalLineProcessor = (() => {
+
+  function calculate (vm, options, metas, rects) {
+    let width = vm.$el.clientWidth
+    let total = metas.length
+    let top = 0
+    let offset = 0
+    while (offset < total) {
+      let strategy = getRowStrategy(width, options, metas, offset)
+      for (let i = 0, left = 0, meta, rect; i < strategy.count; i++) {
+        meta = metas[offset + i]
+        rect = rects[offset + i]
+        rect.top = top
+        rect.left = strategy.left + left
+        rect.width = meta.width * strategy.height / meta.height
+        rect.height = strategy.height
+        left += rect.width
+      }
+      offset += strategy.count
+      top += strategy.height
+    }
+    vm.style.height = top + 'px'
+  }
+
+  function getRowStrategy (width, options, metas, offset) {
+    let greedyCount = getGreedyCount(width, options.lineGap, metas, offset)
+    let lazyCount = Math.max(greedyCount - 1, 1)
+    let greedySize = getContentSize(width, options, metas, offset, greedyCount)
+    let lazySize = getContentSize(width, options, metas, offset, lazyCount)
+    let finalSize = chooseFinalSize(lazySize, greedySize, width)
+    let height = finalSize.height
+    let fitContentWidth = finalSize.width
+    if (finalSize.count === 1) {
+      fitContentWidth = Math.min(options.singleMaxWidth, width)
+      height = metas[offset].height * fitContentWidth / metas[offset].width
+    }
+    return {
+      left: getLeft(width, fitContentWidth, options.align),
+      count: finalSize.count,
+      height: height
+    }
+  }
+
+  function getGreedyCount (rowWidth, rowHeight, metas, offset) {
+    let count = 0
+    for (let i = offset, width = 0; i < metas.length && width <= rowWidth; i++) {
+      width += metas[i].width * rowHeight / metas[i].height
+      count++
+    }
+    return count
+  }
+
+  function getContentSize (rowWidth, options, metas, offset, count) {
+    let originWidth = 0
+    for (let i = count - 1; i >= 0; i--) {
+      let meta = metas[offset + i]
+      originWidth += meta.width * options.lineGap / meta.height
+    }
+    let fitHeight = options.lineGap * rowWidth / originWidth
+    let canFit = (fitHeight <= options.maxLineGap && fitHeight >= options.minLineGap)
+    if (canFit) {
+      return {
+        cost: Math.abs(options.lineGap - fitHeight),
+        count: count,
+        width: rowWidth,
+        height: fitHeight
+      }
+    } else {
+      let height = originWidth > rowWidth ? options.minLineGap : options.maxLineGap
+      return {
+        cost: Infinity,
+        count: count,
+        width: originWidth * height / options.lineGap,
+        height: height
+      }
+    }
+  }
+
+  function chooseFinalSize (lazySize, greedySize, rowWidth) {
+    if (lazySize.cost === Infinity && greedySize.cost === Infinity) {
+      return greedySize.width < rowWidth ? greedySize : lazySize
+    } else {
+      return greedySize.cost >= lazySize.cost ? lazySize : greedySize
+    }
+  }
+
+  return {
+    calculate
+  }
+
+})()
+
+function getLeft (width, contentWidth, align) {
+  switch (align) {
+    case 'right':
+      return width - contentWidth
+    case 'center':
+      return (width - contentWidth) / 2
+    default:
+      return 0
+  }
+}
+
+function sum (arr) {
+  return arr.reduce((sum, val) => sum + val)
+}
+
+function render (rects, metas) {
+  let metasNeedToMoveByTransform = metas.filter((meta) => meta.moveClass)
+  let firstRects = getRects(metasNeedToMoveByTransform)
+  applyRects(rects, metas)
+  let lastRects = getRects(metasNeedToMoveByTransform)
+  metasNeedToMoveByTransform.forEach((meta, i) => {
+    meta.node[MOVE_CLASS_PROP] = meta.moveClass
+    setTransform(meta.node, firstRects[i], lastRects[i])
+  })
+  document.body.clientWidth // forced reflow
+  metasNeedToMoveByTransform.forEach((meta) => {
+    addClass(meta.node, meta.moveClass)
+    clearTransform(meta.node)
+  })
+}
+
+function getRects (metas) {
+  return metas.map((meta) => meta.vm.rect)
+}
+
+function applyRects (rects, metas) {
+  rects.forEach((rect, i) => {
+    let style = metas[i].node.style
+    metas[i].vm.rect = rect
+    for (let prop in rect) {
+      style[prop] = rect[prop] + 'px'
+    }
+  })
+}
+
+function setTransform (node, firstRect, lastRect) {
+  let dx = firstRect.left - lastRect.left
+  let dy = firstRect.top - lastRect.top
+  let sw = firstRect.width / lastRect.width
+  let sh = firstRect.height / lastRect.height
+  node.style.transform =
+  node.style.WebkitTransform = `translate(${dx}px,${dy}px) scale(${sw},${sh})`
+  node.style.transitionDuration = '0s'
+}
+
+function clearTransform (node) {
+  node.style.transform = node.style.WebkitTransform = ''
+  node.style.transitionDuration = ''
+}
+
+function getTransitionEndEvent () {
+  let isWebkitTrans =
+    window.ontransitionend === undefined &&
+    window.onwebkittransitionend !== undefined
+  let transitionEndEvent = isWebkitTrans
+    ? 'webkitTransitionEnd'
+    : 'transitionend'
+  return transitionEndEvent
+}
+
+/**
+ * util
+ */
+
+function getArrayFillWith (item, count) {
+  let getter = (typeof item === 'function') ? () => item() : () => item
+  let arr = []
+  for (let i = 0; i < count; i++) {
+    arr[i] = getter()
+  }
+  return arr
+}
+
+function addClass (elem, name) {
+  if (!hasClass(elem, name)) {
+    let cur = attr(elem, 'class').trim()
+    let res = (cur + ' ' + name).trim()
+    attr(elem, 'class', res)
+  }
+}
+
+function removeClass (elem, name) {
+  let reg = new RegExp('\\s*\\b' + name + '\\b\\s*', 'g')
+  let res = attr(elem, 'class').replace(reg, ' ').trim()
+  attr(elem, 'class', res)
+}
+
+function hasClass (elem, name) {
+  return (new RegExp('\\b' + name + '\\b')).test(attr(elem, 'class'))
+}
+
+function attr (elem, name, value) {
+  if (typeof value !== 'undefined') {
+    elem.setAttribute(name, value)
+  } else {
+    return elem.getAttribute(name) || ''
+  }
+}
+
+function on (elem, type, listener, useCapture = false) {
+  elem.addEventListener(type, listener, useCapture)
+}
+
+function off (elem, type, listener, useCapture = false) {
+  elem.removeEventListener(type, listener, useCapture)
+}
+
+</script>