{"id":109923,"date":"2026-09-25T08:32:58","date_gmt":"2026-09-25T00:32:58","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/109923.html"},"modified":"2026-09-25T08:32:58","modified_gmt":"2026-09-25T00:32:58","slug":"qml-lottie%e5%8a%a8%e7%94%bb%ef%bc%9a%e7%b4%a0%e6%9d%90%e7%8b%ac%e7%ab%8b%e6%8e%a7%e5%88%b6%e4%b8%8e%e5%b0%ba%e5%af%b8%e9%80%82%e9%85%8d","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/109923.html","title":{"rendered":"QML Lottie\u52a8\u753b\uff1a\u7d20\u6750\u72ec\u7acb\u63a7\u5236\u4e0e\u5c3a\u5bf8\u9002\u914d"},"content":{"rendered":"

\u8fd9\u7bc7\u7528\u4e00\u4e2a\u793a\u4f8b\u628a 4 \u4e2a Lottie \u7d20\u6750\u653e\u5230\u540c\u4e00\u5c4f\u4e0a\u540c\u65f6\u64ad\u653e，\u6f14\u793a\u4e24\u4ef6\u4e8b：\u591a\u8def\u52a8\u753b\u600e\u4e48\u5404\u81ea\u72ec\u7acb\u53c8\u7edf\u4e00\u63a7\u5236，\u4ee5\u53ca LottieAnimation \u90a3\u4e2a\u300c\u5199\u4e86 width \u4e5f\u4e0d\u751f\u6548\u300d\u7684\u5751\u5230\u5e95\u8be5\u600e\u4e48\u89e3\u3002<\/p>\n

\u672c\u6587\u662f QML Lottie \u7cfb\u5217\u7b2c 2 \u7bc7，\u5171 3 \u7bc7\u3002<\/p>\n

\n

\u52a8\u753b\u5c55\u793a<\/h3>\n

4 \u4e2a\u7d20\u6750\u5404\u5360\u4e00\u5f20\u5361\u7247，\u8fdb\u5165\u5373\u540c\u65f6\u64ad\u653e\u3002\u9876\u90e8\u4e00\u6392\u662f\u300c\u5168\u90e8\u64ad\u653e \/ \u5168\u90e8\u6682\u505c\u300d\u548c\u300c\u5168\u90e8\u91cd\u64ad\u300d，\u76f4\u63a5\u70b9\u67d0\u5f20\u5361\u7247\u5219\u53ea\u63a7\u5236\u90a3\u4e00\u8def\u3002<\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\n

\u6f14\u793a\u4ee3\u7801<\/h4>\n

import QtQuick
\nimport QtQuick.Controls
\nimport QtQuick.Layouts
\nimport Qt.labs.lottieqt<\/p>\n

Rectangle {
\n id: root
\n color: "#FAFBFC"<\/p>\n

property bool allPlaying: true<\/p>\n

property var cards: [
\n { name: "\u5bf9\u52fe\u5706\u73af", src: "qrc:\/lottie\/success.json" },
\n { name: "\u6587\u6863\u626b\u63cf", src: "qrc:\/lottie\/document-ocr-scan.json" },
\n { name: "\u6c99\u6f0f\u52a0\u8f7d", src: "qrc:\/lottie\/loading-sand-clock_qt.json" },
\n { name: "\u5220\u9664\u6587\u4ef6", src: "qrc:\/lottie\/delete-bin.json" }
\n ]<\/p>\n

\/\/ \u7edf\u4e00\u63a7\u5236\u6240\u6709\u5361\u7247：\u5361\u7247\u672c\u8eab\u5bf9\u5916\u66b4\u9732 setPlaying()
\n \/\/ \u6ce8\u610f Grid \u53ea\u7ba1\u6446\u653e\u3001\u4e0d\u80fd\u6309\u4e0b\u6807\u53d6\u5b50\u9879，\u8981\u901a\u8fc7 Repeater \u6765\u7d22\u5f15
\n function setAll(on) {
\n allPlaying = on
\n for (var i = 0; i < cardRepeater.count; ++i) {
\n var c = cardRepeater.itemAt(i)
\n if (c)
\n c.setPlaying(on)
\n }
\n }<\/p>\n

\/\/ \u5355\u5361\u7247\u88ab\u70b9\u4e86\u4e4b\u540e，\u628a\u300c\u5168\u90e8\u64ad\u653e \/ \u5168\u90e8\u6682\u505c\u300d\u7684\u6587\u6848\u540c\u6b65\u8fc7\u6765
\n function syncAllPlaying() {
\n for (var i = 0; i < cardRepeater.count; ++i) {
\n var c = cardRepeater.itemAt(i)
\n if (c && c.playing) {
\n allPlaying = true
\n return
\n }
\n }
\n allPlaying = false
\n }<\/p>\n

ColumnLayout {
\n anchors.fill: parent
\n anchors.margins: 18
\n spacing: 12<\/p>\n

\/\/ … \u7701\u7565\u9875\u9762\u6807\u9898\u4e0e\u8bf4\u660e\u6587\u6848 …<\/p>\n

\/\/ \u7edf\u4e00\u63a7\u5236
\n RowLayout {
\n Layout.fillWidth: true
\n spacing: 10
\n Button {
\n text: root.allPlaying ? "\u5168\u90e8\u6682\u505c" : "\u5168\u90e8\u64ad\u653e"
\n implicitHeight: 32
\n implicitWidth: 116
\n onClicked: root.setAll(!root.allPlaying)
\n }
\n Button {
\n text: "\u5168\u90e8\u91cd\u64ad"
\n implicitHeight: 32
\n onClicked: {
\n root.setAll(true)
\n for (var i = 0; i < cardRepeater.count; ++i) {
\n var c = cardRepeater.itemAt(i)
\n if (!c)
\n continue
\n var a = c.childAnim()
\n a.gotoAndPlay(a.startFrame)
\n }
\n }
\n }
\n Item { Layout.fillWidth: true }
\n Label {
\n text: "\u70b9\u5361\u7247\u53ef\u5355\u72ec\u6682\u505c\u67d0\u4e00\u8def"
\n color: "#999"
\n font.pixelSize: 11
\n }
\n }<\/p>\n

Grid {
\n id: grid
\n Layout.fillWidth: true
\n Layout.fillHeight: true
\n columns: 2
\n columnSpacing: 14
\n rowSpacing: 14<\/p>\n

Repeater {
\n id: cardRepeater
\n model: root.cards<\/p>\n

delegate: Rectangle {
\n id: card
\n property bool playing: true<\/p>\n

width: (grid.width – grid.columnSpacing) \/ 2
\n height: (grid.height – grid.rowSpacing) \/ 2
\n radius: 10
\n color: "#FFFFFF"
\n border.color: card.playing ? "#C9D4E8" : "#E3E6ED"
\n border.width: 1
\n clip: true<\/p>\n

function setPlaying(on) {
\n playing = on
\n if (on)
\n anim.play()
\n else
\n anim.pause()
\n }
\n \/\/ \u4f9b\u63a7\u4ef6\u5916\u90e8\u7edf\u4e00\u9a71\u52a8\u7684\u51fa\u53e3
\n function childAnim() { return anim }<\/p>\n

\/\/ \u5b9a\u5c3a\u5bb9\u5668：LottieAnimation \u81ea\u5df1\u7684\u5bbd\u9ad8\u4f1a\u88ab\u7d20\u6750\u5c3a\u5bf8\u8986\u76d6，\u7f29\u653e\u53ea\u80fd\u9760 scale
\n Item {
\n id: animBox
\n readonly property real side: Math.max(50, Math.min(card.width – 44,
\n card.height – 30 – 30))
\n width: side
\n height: side
\n anchors.horizontalCenter: parent.horizontalCenter
\n anchors.top: parent.top
\n anchors.topMargin: 14<\/p>\n

LottieAnimation {
\n id: anim
\n source: modelData.src
\n autoPlay: true
\n loops: LottieAnimation.Infinite
\n quality: LottieAnimation.MediumQuality
\n transformOrigin: Item.TopLeft
\n scale: (width > 0 && height > 0)
\n ? Math.min(animBox.width \/ width, animBox.height \/ height)
\n : 1
\n }
\n }<\/p>\n

\/\/ … \u7701\u7565\u5e95\u90e8\u540d\u79f0\u4e0e\u7d20\u6750\u5c3a\u5bf8\u4fe1\u606f\u6761 …<\/p>\n

\/\/ … \u7701\u7565\u53f3\u4e0a\u89d2\u64ad\u653e\u72b6\u6001\u89d2\u6807 …<\/p>\n

\/\/ \u70b9\u5361\u7247\u5355\u72ec\u5f00\u5173\u8fd9\u4e00\u8def\u52a8\u753b
\n MouseArea {
\n anchors.fill: parent
\n anchors.bottomMargin: 30
\n cursorShape: Qt.PointingHandCursor
\n onClicked: {
\n card.setPlaying(!card.playing)
\n root.syncAllPlaying()
\n }
\n }
\n }
\n }
\n }
\n }
\n}<\/p>\n

\u5173\u952e\u903b\u8f91\u8bb2\u89e3<\/h4>\n

\u5c3a\u5bf8\u6539\u4e0d\u52a8\u7684\u6b63\u89e3<\/h5>\n

\u56db\u4e2a\u7d20\u6750\u7684\u56fa\u6709\u5c3a\u5bf8\u5404\u4e0d\u76f8\u540c，\u6709 600\u00d7600 \u7684，\u4e5f\u6709 1200\u00d71200 \u7684\u3002\u5982\u679c\u4f60\u76f4\u63a5\u7ed9 LottieAnimation \u5199 width \/ height，\u4f1a\u53d1\u73b0\u5b8c\u5168\u4e0d\u8d77\u4f5c\u7528\u2014\u2014\u56e0\u4e3a\u7d20\u6750\u52a0\u8f7d\u5b8c\u6210\u540e，\u63a7\u4ef6\u5c3a\u5bf8\u4f1a\u88ab\u5f3a\u5236\u6539\u5199\u6210\u7d20\u6750\u672c\u8eab\u7684\u5927\u5c0f\u3002<\/p>\n

\u8fd9\u662f Qt \u6e90\u7801\u91cc\u5199\u6b7b\u7684\u884c\u4e3a，\u7d20\u6750 JSON \u91cc\u662f\u591a\u5927，\u63a7\u4ef6\u5c31\u88ab\u6539\u6210\u591a\u5927：<\/p>\n

\/\/ qt 6.8.2 src\/qtlottie\/src\/imports\/lottieanimation.cpp<\/span>
\nsetWidth<\/span>(<\/span>m_animWidth)<\/span>;<\/span> \/\/ \u7d20\u6750 JSON \u91cc\u7684 "w"<\/span>
\nsetHeight<\/span>(<\/span>m_animHeight)<\/span>;<\/span> \/\/ \u7d20\u6750 JSON \u91cc\u7684 "h"<\/span><\/p>\n

\u5b98\u65b9\u6587\u6863\u4e5f\u660e\u786e\u8bf4\u4e86\u8fd9\u4ef6\u4e8b：\u6539 LottieAnimation \u7684\u5bbd\u9ad8\u4e0d\u4f1a\u5f71\u54cd\u52a8\u753b\u663e\u793a\u7684\u5927\u5c0f，\u8981\u63a7\u5236\u5c3a\u5bf8\u5f97\u628a\u5b83\u5957\u5728\u4e00\u4e2a\u5916\u5c42\u5bb9\u5668\u91cc\u3002<\/p>\n

\u6240\u4ee5\u6b63\u786e\u505a\u6cd5\u662f：\u5916\u9762\u653e\u4e00\u4e2a Item \u5f53\u300c\u753b\u6846\u300d，\u52a8\u753b\u81ea\u5df1\u7528 scale \u7f29\u8fdb\u53bb\u9002\u914d\u753b\u6846\u3002<\/p>\n

Item {
\n id: animBox
\n width: 230
\n height: 230
\n anchors.centerIn: parent \/\/ \u5c45\u4e2d\u7684\u951a\u70b9\u6302\u5728\u3010\u5916\u5c42\u3011<\/p>\n

LottieAnimation {
\n id: anim
\n source: "qrc:\/lottie\/success.json"
\n transformOrigin: Item.TopLeft
\n scale: (width > 0 && height > 0)
\n ? Math.min(animBox.width \/ width, animBox.height \/ height)
\n : 1 \/\/ \u52a0\u8f7d\u524d width=0，\u4e0d\u7ed9\u5b88\u536b\u4f1a\u7b97\u51fa NaN
\n }
\n}<\/p>\n

\u8fd9\u91cc\u9762\u6709\u4e09\u4e2a\u7ec6\u8282\u90fd\u4e0d\u80fd\u7701，\u5c11\u4e00\u4e2a\u5c31\u4f1a\u51fa\u95ee\u9898\u3002\u7b2c\u4e00\u4e2a\u662f transformOrigin: Item.TopLeft，\u9ed8\u8ba4\u7f29\u653e\u539f\u70b9\u662f\u4e2d\u5fc3，\u7d20\u6750\u7f29\u5c0f\u65f6\u4f1a\u5f80\u4e2d\u95f4\u584c，\u548c\u5de6\u4e0a\u89d2\u5bf9\u9f50\u7684\u5916\u5c42\u5bb9\u5668\u5bf9\u4e0d\u4e0a，\u6240\u4ee5\u5fc5\u987b\u6539\u6210\u4ece\u5de6\u4e0a\u89d2\u5f00\u59cb\u7f29\u3002\u7b2c\u4e8c\u4e2a\u662f\u5c45\u4e2d\u7684 anchors \u5fc5\u987b\u6302\u5728\u5916\u5c42 Item \u4e0a，\u6302\u5728\u5185\u5c42\u7b49\u4e8e\u53bb\u5c45\u4e2d\u90a3\u4e2a 600\u00d7600 \u7684\u5927\u63a7\u4ef6，\u7f29\u5b8c\u7167\u6837\u9519\u4f4d\u3002\u7b2c\u4e09\u4e2a\u662f width > 0 \u7684\u5b88\u536b，\u7d20\u6750\u52a0\u8f7d\u5b8c\u6210\u524d width \u662f 0，\u76f4\u63a5\u505a\u9664\u6cd5\u4f1a\u5f97\u5230 NaN，\u6574\u4e2a\u52a8\u753b\u5c31\u4e0d\u663e\u793a\u4e86\u3002<\/p>\n

\u8fd9\u6837\u5199\u8fd8\u6709\u4e2a\u989d\u5916\u597d\u5904：\u6362\u7d20\u6750\u4e0d\u7528\u6539\u6570\u5b57\u3002\u4e0d\u7ba1\u7d20\u6750\u662f 600\u00b2 \u8fd8\u662f 1200\u00b2，Math.min \u90fd\u4f1a\u81ea\u5df1\u7b97\u51fa\u5408\u9002\u7684\u7f29\u653e\u6bd4\u4f8b\u3002\u793a\u4f8b\u91cc\u5361\u7247\u5c3a\u5bf8\u8ddf\u7740\u7a97\u53e3\u53d8，\u52a8\u753b\u4e5f\u4f1a\u81ea\u52a8\u91cd\u65b0\u7f29\u653e，\u539f\u7406\u662f\u4e00\u6837\u7684\u3002<\/p>\n

\u987a\u5e26\u63d0\u9192\u4e00\u4e0b，\u4e0d\u8981\u8bd5\u56fe\u53bb\u6539\u7d20\u6750 JSON \u91cc\u7684 w \/ h \u6765\u7f29\u5c0f\u52a8\u753b\u3002Lottie \u7684\u5bbd\u9ad8\u662f\u5408\u6210\u89c6\u53e3，\u56fe\u5c42\u5750\u6807\u662f\u7edd\u5bf9\u5750\u6807，\u6539\u5c0f\u53ea\u4f1a\u88c1\u6389\u5185\u5bb9，\u4e0d\u4f1a\u7b49\u6bd4\u7f29\u5c0f\u3002<\/p>\n

\n
\u60f3\u6309\u7f16\u53f7\u53d6\u5361\u7247，\u522b\u627e Grid，\u627e Repeater<\/h5>\n

\u7edf\u4e00\u63a7\u5236\u6240\u6709\u5361\u7247\u65f6，\u9700\u8981\u6309\u4e0b\u6807\u4e00\u5f20\u4e00\u5f20\u62ff\u5230\u5b83\u4eec\u3002\u6700\u5f00\u59cb\u6211\u5199\u7684\u662f grid.itemAt(i)，\u8fd0\u884c\u76f4\u63a5\u62a5\u9519\u8bf4 itemAt \u4e0d\u662f\u4e2a\u51fd\u6570\u3002<\/p>\n

\u539f\u56e0\u5f88\u7b80\u5355：Grid\u3001Row\u3001Column\u3001Flow \u8fd9\u4e9b\u5e03\u5c40\u7ec4\u4ef6\u53ea\u7ba1\u628a\u5b50\u9879\u6446\u5230\u6b63\u786e\u4f4d\u7f6e，\u5e76\u4e0d\u63d0\u4f9b\u300c\u6309\u4e0b\u6807\u53d6\u5b50\u9879\u300d\u7684\u80fd\u529b\u3002\u8981\u7d22\u5f15\u5b50\u9879，\u5f97\u627e\u5305\u88f9\u5728\u91cc\u9762\u7684 Repeater\u3002<\/p>\n

Repeater { id: cardRepeater; model: root.cards; delegate: … }<\/p>\n

\/\/ \u6b63\u786e\u5199\u6cd5
\ncardRepeater.count
\ncardRepeater.itemAt(i)<\/p>\n

\n
\u6bcf\u5f20\u5361\u7247\u81ea\u5df1\u7ba1\u81ea\u5df1\u7684\u64ad\u653e\u72b6\u6001<\/h5>\n

\u6bcf\u5f20\u5361\u7247\u5185\u90e8\u7ef4\u62a4\u81ea\u5df1\u7684\u64ad\u653e\u72b6\u6001，\u5bf9\u5916\u53ea\u66b4\u9732\u4e24\u4e2a\u51fd\u6570：\u4e00\u4e2a\u7528\u6765\u5f00\u5173\u64ad\u653e，\u4e00\u4e2a\u8fd4\u56de\u5185\u90e8\u52a8\u753b\u5bf9\u8c61\u4f9b\u5916\u90e8\u7edf\u4e00\u64cd\u4f5c\u3002<\/p>\n

function setPlaying(on) {
\n playing = on
\n if (on)
\n anim.play()
\n else
\n anim.pause()
\n}
\nfunction childAnim() { return anim }<\/p>\n

\u9876\u5c42\u4e0d\u76f4\u63a5\u64cd\u4f5c\u52a8\u753b\u63a7\u4ef6，\u800c\u662f\u904d\u5386\u6240\u6709\u5361\u7247\u8c03\u7528 setPlaying()\u3002\u4e4b\u6240\u4ee5\u8981\u7528\u8fd9\u79cd\u300c\u5e7f\u64ad\u4e0b\u53bb\u3001\u5361\u7247\u81ea\u5df1\u6267\u884c\u300d\u7684\u7ed3\u6784，\u662f\u56e0\u4e3a LottieAnimation \u672c\u8eab\u6ca1\u6709 playing \u5c5e\u6027，\u5916\u9762\u8bfb\u4e0d\u5230\u5b83\u5f53\u524d\u5728\u4e0d\u5728\u64ad，\u53ea\u80fd\u5728\u5361\u7247\u91cc\u81ea\u5df1\u7ef4\u62a4\u4e00\u4efd\u72b6\u6001\u3002<\/p>\n

\u53cd\u8fc7\u6765，\u70b9\u5355\u5f20\u5361\u7247\u6682\u505c\u540e，\u9876\u90e8\u6309\u94ae\u7684\u6587\u6848\u4e5f\u8981\u8ddf\u7740\u53d8，\u6240\u4ee5\u6709\u4e2a syncAllPlaying() \u53cd\u8fc7\u6765\u67e5\u4e00\u904d\u6240\u6709\u5361\u7247：\u53ea\u8981\u8fd8\u6709\u4e00\u8def\u5728\u64ad，\u6309\u94ae\u5c31\u663e\u793a\u300c\u5168\u90e8\u6682\u505c\u300d，\u5168\u505c\u4e86\u624d\u663e\u793a\u300c\u5168\u90e8\u64ad\u653e\u300d\u3002<\/p>\n

\u518d\u8bf4\u8bf4\u300c\u5168\u90e8\u91cd\u64ad\u300d\u4e3a\u4ec0\u4e48\u7528 gotoAndPlay() \u800c\u4e0d\u662f play()\u3002play() \u662f\u4ece\u5f53\u524d\u4f4d\u7f6e\u7ee7\u7eed\u64ad，\u5982\u679c\u52a8\u753b\u5df2\u7ecf\u8dd1\u5230\u4e00\u534a\u4e86，\u70b9\u91cd\u64ad\u4e0d\u4f1a\u6709\u4efb\u4f55\u89c6\u89c9\u53d8\u5316\u3002gotoAndPlay(startFrame) \u624d\u4f1a\u5f3a\u5236\u628a\u64ad\u653e\u5934\u62e8\u56de\u7b2c\u4e00\u5e27\u518d\u5f00\u59cb，\u8fd9\u624d\u662f\u300c\u91cd\u64ad\u300d\u8be5\u6709\u7684\u6548\u679c\u3002\u8fd9\u4e2a\u533a\u522b\u5f88\u5bb9\u6613\u5ffd\u7565，\u8bb0\u4e00\u4e0b\u5c31\u597d\u3002<\/p>\n

\n
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\u5bf9\u52fe\u5706\u73af<\/td>\n600\u00d7600<\/td>\n\u7ea6 177 px<\/td>\n<\/tr>\n
\u6587\u6863\u626b\u63cf<\/td>\n600\u00d7600<\/td>\n\u7ea6 177 px<\/td>\n<\/tr>\n
\u6c99\u6f0f\u52a0\u8f7d<\/td>\n1080\u00d71080<\/td>\n\u7ea6 177 px<\/td>\n<\/tr>\n
\u5220\u9664\u6587\u4ef6<\/td>\n1200\u00d71200<\/td>\n\u7ea6 177 px<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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\u7cfb\u5217\u6587\u7ae0<\/h3>\n
    \n
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    \n

    \u5df2\u9a8c\u8bc1\u73af\u5883：<\/p>\n

      \n
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