#夏日挑战赛# HarmonyOS - 自定义组件之Stepper步进器 原创 精华

<div class="step-wrapper {{ disabled ? 'step-wrapper-disabled' : 'step-wrapper-not-disabled' }}">
  <div class="step-minus">
    <div class="icon">
      <div
        class="step-minus-icon {{ num <= min ? 'step-btn-disabled' : 'step-btn-not-disabled' }}"
        disabled="{{ disabled || num <= min }}"
        @click="minusHandle">
      </div>
    </div>
  </div>
  <div class="step-state">
    <div if="{{ ! disabled || ! title }}" class="step-num {{ title ? 'small-top' : 'big-top' }}">
      <text>
        {{ showNum }}
      </text>
    </div>
    <div if="{{ title }}" class="{{ disabled ? 'step-disabled-title' : 'step-title' }}">
      <text>
        <span>{{ title }}</span>
      </text>
    </div>
  </div>
  <div class="step-add">
    <div class="icon">
      <div
        class="step-add-icon {{ num >= max ? 'step-btn-disabled' : 'step-btn-not-disabled' }}"
        disabled="{{ disabled || num >= max }}"
        @click="addHandle">
      </div>
    </div>
  </div>
</div>
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export default {
	props: {
		disabled: {
			default: false
		},
		num: {
			default: 0
		},
		min: Number,
		max: Number,
		title: {
			default: ""
		},
		step: {
			default: 1
		},
		precision: {
			default: 0
		}
	},
	computed: {
		showNum() {
			let num = this.num
			return num.toFixed(this.precision);
		}
	},
	addHandle() {
		this.$emit("change", {
			num: this.num + this.step
		});
	},
	minusHandle() {
		this.$emit("change", {
			num: this.num - this.step
		});
	}
}
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.step-wrapper {
	width: 100%;
	height: 64px;
	margin: 12px;
	border-radius: 16px;
	background-color: #fff;
}

.step-wrapper-disabled {
	opacity: 0.4;
}

.step-wrapper-not-disabled {
	opacity: 1;
}

.step-minus, .step-add, .step-state {
	flex: 1;
}

.step-minus, .step-add {
	justify-content: center;
}

.icon {
	width: 100%;
	margin-top: 21px;
	justify-content: center;
}

.step-minus-icon, .step-add-icon, .step-minus-icon:active, .step-add-icon:active {
	width: 24px;
	height: 24px;
	background-position: center;
	background-repeat: no-repeat;
	background-size: cover;
}

.step-minus-icon {
	background-image: url("/common/images/ic_minus_disabled.png");
}

.step-add-icon {
	background-image: url("/common/images/ic_add_disabled.png");
}


.step-minus-icon:active {
	background-image: url("/common/images/ic_minus_active.png");
}

.step-add-icon:active {
	background-image: url("/common/images/ic_add_active.png");
}


.step-btn-disabled {
	opacity: 0.4;
}

.step-btn-not-disabled {
	opacity: 1;
}

.step-state {
	flex-direction: column;
	align-items: center;
}

.step-num {
	margin-bottom: 2px;
}

.small-top {
	margin-top: 13px;
}

.big-top {
	margin-top: 21px;
}

.step-num > text {
	font-size: 16px;
	height: 21px;
	line-height: 22px;
}

.step-title > text {
	height: 16px;
	font-size: 12px;
	line-height: 16px;
}

.step-num, .step-title {
	width: 100%;
	font-family: HarmonyHeiTi-, HarmonyHeiTi;
	font-weight: normal;
	color: #000000;
	justify-content: center;
}

.step-disabled-title {
	width: 100%;
	margin-top: 21px;
}

.step-disabled-title > text {
	width: 100%;
	text-align: center;
	height: 21px;
	font-size: 16px;
	line-height: 22px;
}
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<step num="{{ num }}" @change="stepChange"></step> 
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<step num="{{ num }}" disabled="{{ true }}" @change="stepChange"></step>
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<step num="{{ num }}" precision="{{ 2 }}" @change="stepChange"></step>
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<step num="{{ num }}" precision="{{ 2 }}" step="{{ 0.01 }}" @change="stepChange"></step>
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<step num="{{ num }}" min="{{ 20 }}" max="{{ 26 }}" @change="stepChange"></step>
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<step num="{{ num }}" title="{{ '目标' }}" @change="stepChange"></step>
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class="step-wrapper {{ disabled ? 'step-wrapper-disabled' : 'step-wrapper-not-disabled' }}"
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computed: {
    showNum() {
        let num = this.num
        return num.toFixed(this.precision);
    }
}
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<!-- comp.hml -->
<div class="item">
	<text class="title-style">{{compProp}}</text>
</div>
// comp.js export default {   props: ['compProp'],}
<!-- xxx.hml -->
<element name='comp' src='../../common/component/comp/comp.hml'></element>
<div class="container">
	<comp comp-prop="{{title}}"></comp>
</div>
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<div class="item">
    <text class="title-style">{{ title }}</text>
</div>
<!-- comp.jsexport default {   props: {    title: {      default: 'title',    },  },} -->
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<element name='comp' src='../../common/component/comp/comp.hml'></element>
<div class="container">
    <comp title="自定义组件"></comp>
</div>
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<div class="item">
	<text class="text-style" onclick="childClicked">点击这里查看隐藏文本</text>
	<text class="text-style" if="{{showObj}}">hello world</text>
</div>
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export default {
	childClicked () {
    	this.$emit('eventType1', {text: '收到子组件参数'});
        this.showObj = !this.showObj;
    },
}
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<div class="container">
	<text>父组件：{{text}}</text>
    <comp @event-type1="textClicked"></comp>
</div>
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export default {
	data: {
    	text: '开始',
    },
    textClicked (e) {
    	this.text = e.detail.text;
  	},
}
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