如何將標記圖標或MapCircle動態設置爲Qt中地圖上當前位置的固定大小快速

Question

我無法找到任何方式將MapCircle的半徑設置爲固定大小，同時縮放地圖。標記圖標用於PlaceSearchModel，但我無法使其動態化。當我縮小地圖時，它變得更大，當最小化地圖時，標記消失。

下面是代碼：

import QtQuick 2.0 
import QtQuick.Controls 2.0 
import QtQuick.Controls.Material 2.0 
import QtQuick.Controls.Universal 2.0 
import Fluid.Controls 1.0 
import QtLocation 5.6 
import QtPositioning 5.6 

TabbedPage { 
    id: frame 
    title: "Web Map" 

    Tab { 
     title: "Map Viewer" 
     anchors { 
      left: parent.left 
      top: parent.top 
      bottom: parent.bottom 
     } 
     width: parent.width 
     clip: true 
     Material.background: "white" 
     Material.elevation: 1 
     Universal.background: Universal.accent 

     Plugin { 
      id: mapPlugin 
      name: "osm" 
     } 

     Map { 
      id:map 
      anchors.fill: parent 
      plugin: mapPlugin 
      zoomLevel: 14 

      MapItemView { 
       model: src 
       delegate: MapQuickItem { 
        coordinate: src.position.coordinate 

        anchorPoint.x: image.width * 0.5 
        anchorPoint.y: image.height 

        sourceItem: Column { 
         Image { id: image; source: "marker.png" } 
         Text { text: title; font.bold: true } 
        } 
       } 
      } 

      MapCircle { 
       center : src.position.coordinate 
       radius: parent.width/10 
       border.width: 1 
       color: 'green' 
      } 
     } 
     PositionSource { 
      id: src 
      updateInterval: 1000 
      active: true 

      onPositionChanged: { 
       var coord = src.position.coordinate; 
       console.debug("current position:", coord.latitude, coord.longitude); 
       map.center = position.coordinate 
      } 
     } 
} 
} 

截圖：

Answer 1

我發現從Qt的例子稱爲地方的解決方案：

MapQuickItem { 
     id: yeahh 
     sourceItem: Rectangle { width: 10; height: 10; color: "red"; border.width: 2; border.color: "blue"; smooth: true; radius: 15 } 
     coordinate :src.position.coordinate 
     opacity:1.0 
     anchorPoint: Qt.point(sourceItem.width/2, sourceItem.height/2) 
    }