100 lines
3.5 KiB
Objective-C
100 lines
3.5 KiB
Objective-C
//
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// AMapPolygonController.m
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// amap_map
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//
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// Created by lly on 2020/11/12.
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//
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#import "AMapPolygonController.h"
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#import "AMapPolygon.h"
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#import "AMapJsonUtils.h"
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#import "MAPolygon+Flutter.h"
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#import "MAPolygonRenderer+Flutter.h"
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#import "FlutterMethodChannel+MethodCallDispatch.h"
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@interface AMapPolygonController ()
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@property (nonatomic,strong) NSMutableDictionary<NSString*,AMapPolygon*> *polygonDict;
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@property (nonatomic,strong) FlutterMethodChannel *methodChannel;
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@property (nonatomic,strong) NSObject<FlutterPluginRegistrar> *registrar;
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@property (nonatomic,strong) MAMapView *mapView;
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@end
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@implementation AMapPolygonController
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- (instancetype)init:(FlutterMethodChannel*)methodChannel
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mapView:(MAMapView*)mapView
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registrar:(NSObject<FlutterPluginRegistrar>*)registrar {
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self = [super init];
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if (self) {
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_methodChannel = methodChannel;
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_mapView = mapView;
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_polygonDict = [NSMutableDictionary dictionaryWithCapacity:1];
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_registrar = registrar;
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__weak typeof(self) weakSelf = self;
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[_methodChannel addMethodName:@"polygons#update" withHandler:^(FlutterMethodCall * _Nonnull call, FlutterResult _Nonnull result) {
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id polygonsToAdd = call.arguments[@"polygonsToAdd"];
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if ([polygonsToAdd isKindOfClass:[NSArray class]]) {
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[weakSelf addPolygons:polygonsToAdd];
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}
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id polygonsToChange = call.arguments[@"polygonsToChange"];
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if ([polygonsToChange isKindOfClass:[NSArray class]]) {
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[weakSelf changePolygons:polygonsToChange];
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}
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id polygonIdsToRemove = call.arguments[@"polygonIdsToRemove"];
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if ([polygonIdsToRemove isKindOfClass:[NSArray class]]) {
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[weakSelf removePolygonIds:polygonIdsToRemove];
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}
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result(nil);
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}];
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}
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return self;
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}
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- (nullable AMapPolygon *)polygonForId:(NSString *)polygonId {
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return _polygonDict[polygonId];
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}
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- (void)addPolygons:(NSArray*)polygonsToAdd {
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for (NSDictionary* polygonDict in polygonsToAdd) {
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AMapPolygon *polygon = [AMapJsonUtils modelFromDict:polygonDict modelClass:[AMapPolygon class]];
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// 先加入到字段中，避免后续的地图回到里，取不到对应的overlay数据
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if (polygon.id_) {
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_polygonDict[polygon.id_] = polygon;
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}
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[self.mapView addOverlay:polygon.polygon];
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}
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}
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- (void)changePolygons:(NSArray*)polygonsToChange {
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for (NSDictionary* polygonDict in polygonsToChange) {
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AMapPolygon *polygon = [AMapJsonUtils modelFromDict:polygonDict modelClass:[AMapPolygon class]];
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AMapPolygon *currentPolygon = _polygonDict[polygon.id_];
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NSAssert(currentPolygon != nil, @"需要修改的Polygon不存在");
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[currentPolygon updatePolygon:polygon];
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MAOverlayRenderer *render = [self.mapView rendererForOverlay:currentPolygon.polygon];
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if (render && [render isKindOfClass:[MAPolygonRenderer class]]) { // render没有复用，只要添加过，就一定可以获取到
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[(MAPolygonRenderer *)render updateRenderWithPolygon:currentPolygon];
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}
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}
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}
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- (void)removePolygonIds:(NSArray*)polygonIdsToRemove {
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for (NSString* polygonId in polygonIdsToRemove) {
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if (!polygonId) {
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continue;
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}
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AMapPolygon* polygon = _polygonDict[polygonId];
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if (!polygon) {
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continue;
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}
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[self.mapView removeOverlay:polygon.polygon];
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[_polygonDict removeObjectForKey:polygonId];
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}
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}
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@end
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