71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
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#pragma once
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#include <QString>
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#include <QRectF>
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#include <maplayer.h>
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#include <mapcanvas.h>
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#include <webmercator.h>
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#include <tmsproviderfactory.h>
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namespace LAMPMainWidget
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{
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/**
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* tms服务所用图层
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*/
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class TmsLayer : public MapLayer
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{
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public:
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TmsLayer(TmsProviders provider,
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const QString& id,
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MapCanvas* mapCanvas,
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CRS* crs = new WebMercator{});
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public:
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/**
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* 获取图层在当前zoom值的分辨率
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* @return 图层分辨率
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*/
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double resolution() const override;
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/**
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* 获取图层的整个显示边界，一般情况下等同于坐标系的边界
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* @return 图层的显示区域
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*/
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QRectF extent() const override;
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/**
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* 设置图层的zoom值
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* @param zoom 图层zoom值
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*/
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void setZoomValue(int zoom) override;
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/**
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* 由rect和zoom值解析出该区域内的所有瓦片url路径，
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* 并将结果存储在tiles中
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* @param rect 区域（经纬度坐标）
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* @param zoom zoom值
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* @param tiles 结果
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* @param size 下载的瓦片大小
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* @return 是否解析成功
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*/
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bool parseTiles(const QRectF& rect, int zoom, QHash<QPoint, QString>& tiles, QSize& size) const;
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/**
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* 图层所能支持的最大zoom值
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* @return 最大zoom值
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*/
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virtual int maxZoom() const { return kMaxZoom; }
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/**
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* 图层所能支持的最小zoom值
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* @return 最小zoom值
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*/
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virtual int minZoom() const { return kMinZoom; }
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private:
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static const int kMinZoom{4};
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static const int kMaxZoom{18};
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};
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}
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