javascript - 如何使用 jQuery 更改仪表大小？

Question

我创建了一个“找到的”仪表，我想更改它的大小，因为现在它看起来不太好。

我试图从 CSS 更改它，但我的尝试完全破坏了仪表。

我的代码:

$(document).ready(function () {
    var gaugeObj = $('#gauge1'),
        gaugeMin = gaugeObj.data('min'),
        gaugeMax = gaugeObj.data('max'),
        gaugeValue = gaugeObj.data('value');
    setRangeText(gaugeObj);
    setGauge(gaugeObj, gaugeMin, gaugeMax, gaugeValue);

    function setRangeText(gaugeObj) {
        gaugeObj.find('.gauge-min').text(gaugeMin);
        gaugeObj.find('.gauge-max').text(gaugeMax);
        gaugeObj.find('.gauge-value').text(gaugeValue);
    }

    function setGauge(gaugeObj, gaugeMin, gaugeMax, gaugeValue) {
        var percentage = (gaugeValue / gaugeMax),
            degrees = 180 * percentage,
            pointerDegrees = degrees - 90,
            spinner = gaugeObj.find('.gauge-spinner'),
            pointer = gaugeObj.find('.pointer');

        spinner.css('transform', 'rotate(' + degrees + 'deg)');
        pointer.css('transform', 'rotate(' + pointerDegrees + 'deg)');
    }

});

.gauge-wrapper {
    margin-top: 10px;
    padding-bottom: 4rem;
}

    .gauge-wrapper:not(:last-of-type) {
        margin-bottom: 10px;
    }

.gauge {
    width: 250px;
    height: 125px;
    position: relative;
    overflow: hidden;
}

.gauge-outer {
    display: inline-block;
    position: relative;
    width: 250px;
    height: 125px;

}

.gauge-inner {
    width: 250px;
    height: 125px;
    display: block;
    background-color: #ddd;
    border-radius: 250px 250px 0 0;
    z-index: 1;
}

    .gauge-inner::after {
        content: '';
        width: 170px;
        height: 85px;
        top: 40px;
        left: 40px;
        background-color: #fff;
        border-radius: 250px 250px 0 0;
        position: absolute;
        z-index: 3;
    }

.gauge-spinner {
    width: 250px;
    height: 125px;
    background: #4bd440;
    position: absolute;
    z-index: 2;
    transform-origin: top center;
    transform: rotate(0deg);
    transition: transform 800ms cubic-bezier(0.5, 0.03, 0.06, 1.01);
    transform: translateZ(0);
    border-radius: 0 0 250px 250px;
}

.gauge-range {
    position: relative;
}

.gauge-min, .gauge-max {
    position: absolute;
    padding-top: .5em;
    padding-bottom: .5em;
    width: 40px;
    color: #aaa;
    text-align: center;
}

.gauge-min {
    left: 0;
}

.gauge-max {
    right: 0;
}

.gauge-value {
    position: absolute;
    left: 0;
    right: 0;
    top: .5em;
    text-align: center;
    font-size: 2.5em;
    font-weight: 600;
    color: #000;
}

.pointer {
    display: block;
    width: 6px;
    height: 130px;
    background-color: #000;
    border-radius: 4px 4px 0 0;
    position: absolute;
    z-index: 4;
    bottom: 0;
    left: 122px;
    transform: rotate(-90deg);
    transform-origin: center bottom;
    transition: transform 800ms cubic-bezier(0.5, 0.03, 0.06, 1.01);
}

    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
 <div class="gauge-wrapper">
                    <div class="gauge-outer" id="gauge1" data-min="1" data-max="150" data-value="77">
                        <div class="gauge">
                            <div class="gauge-inner"></div>
                            <div class="gauge-spinner alt"></div>
                        </div>
                        <div class="pointer"></div>
                        <div class="gauge-range">
                            <div class="gauge-min"></div>
                            <div class="gauge-max"></div>
                            <div class="gauge-value"></div>
                        </div>
                    </div>
                </div>

所以我尝试在 css 中更改此参数:

.gauge {
width: 250px;
height: 125px;
position: relative;
overflow: hidden;
}

经过几个小时的努力，我找不到关于如何更改此仪表大小的解决方案。所以现在我想把它变小。如何在不破坏量规的情况下做到这一点？

Answer 1

你的问题有点不清楚。更小？小了多少？您可以手动更改 height 和 width 并记住比例。但您也可以使用 transform:scale(0.x) 使其更小。

例如，我添加了 .gauge-outer {transform:scale(0.5)}，这将使所有内容都变成原始大小的 1/2。

$(document).ready(function () {
    var gaugeObj = $('#gauge1'),
        gaugeMin = gaugeObj.data('min'),
        gaugeMax = gaugeObj.data('max'),
        gaugeValue = gaugeObj.data('value');
    setRangeText(gaugeObj);
    setGauge(gaugeObj, gaugeMin, gaugeMax, gaugeValue);

    function setRangeText(gaugeObj) {
        gaugeObj.find('.gauge-min').text(gaugeMin);
        gaugeObj.find('.gauge-max').text(gaugeMax);
        gaugeObj.find('.gauge-value').text(gaugeValue);
    }

    function setGauge(gaugeObj, gaugeMin, gaugeMax, gaugeValue) {
        var percentage = (gaugeValue / gaugeMax),
            degrees = 180 * percentage,
            pointerDegrees = degrees - 90,
            spinner = gaugeObj.find('.gauge-spinner'),
            pointer = gaugeObj.find('.pointer');

        spinner.css('transform', 'rotate(' + degrees + 'deg)');
        pointer.css('transform', 'rotate(' + pointerDegrees + 'deg)');
    }

});

.gauge-wrapper {
    margin-top: 10px;
    padding-bottom: 4rem;
}

    .gauge-wrapper:not(:last-of-type) {
        margin-bottom: 10px;
    }

.gauge {
    width: 250px;
    height: 125px;
    position: relative;
    overflow: hidden;
}

.gauge-outer {
    display: inline-block;
    position: relative;
    width: 250px;
    height: 125px;

}

.gauge-inner {
    width: 250px;
    height: 125px;
    display: block;
    background-color: #ddd;
    border-radius: 250px 250px 0 0;
    z-index: 1;
}

    .gauge-inner::after {
        content: '';
        width: 170px;
        height: 85px;
        top: 40px;
        left: 40px;
        background-color: #fff;
        border-radius: 250px 250px 0 0;
        position: absolute;
        z-index: 3;
    }

.gauge-spinner {
    width: 250px;
    height: 125px;
    background: #4bd440;
    position: absolute;
    z-index: 2;
    transform-origin: top center;
    transform: rotate(0deg);
    transition: transform 800ms cubic-bezier(0.5, 0.03, 0.06, 1.01);
    transform: translateZ(0);
    border-radius: 0 0 250px 250px;
}

.gauge-range {
    position: relative;
}

.gauge-min, .gauge-max {
    position: absolute;
    padding-top: .5em;
    padding-bottom: .5em;
    width: 40px;
    color: #aaa;
    text-align: center;
}

.gauge-min {
    left: 0;
}

.gauge-max {
    right: 0;
}

.gauge-value {
    position: absolute;
    left: 0;
    right: 0;
    top: .5em;
    text-align: center;
    font-size: 1.2em;
    font-weight: 600;
    color: #000;
}

.pointer {
    display: block;
    width: 6px;
    height: 130px;
    background-color: #000;
    border-radius: 4px 4px 0 0;
    position: absolute;
    z-index: 4;
    bottom: 0;
    left: 122px;
    transform: rotate(-90deg);
    transform-origin: center bottom;
    transition: transform 800ms cubic-bezier(0.5, 0.03, 0.06, 1.01);
}

.gauge-outer {
transform:scale(0.5)
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
 <div class="gauge-wrapper">
                    <div class="gauge-outer" id="gauge1" data-min="1" data-max="150" data-value="77">
                        <div class="gauge">
                            <div class="gauge-inner"></div>
                            <div class="gauge-spinner alt"></div>
                        </div>
                        <div class="pointer"></div>
                        <div class="gauge-range">
                            <div class="gauge-min"></div>
                            <div class="gauge-max"></div>
                            <div class="gauge-value"></div>
                        </div>
                    </div>
                </div>