MapView supports delegate for move, zoom and doubleTap-Events

@@ -11,6 +11,7 @@
 
 #import "RMFoundation.h"
 #import "RMLatLong.h"
+#import "RMMapViewDelegate.h"
 
 // iPhone-specific mapview stuff.
 // Handles event handling, whatnot.
@@ -30,9 +31,10 @@ typedef struct {
 @interface RMMapView : UIView
 {
 	RMMapContents *contents;
+	id<RMMapViewDelegate> delegate;
 	
-	bool enableDragging;
-	bool enableZoom;
+	BOOL enableDragging;
+	BOOL enableZoom;
 	RMGestureDetails lastGesture;
 }
 
@@ -40,6 +42,10 @@ typedef struct {
 // property. The contents structure holds the actual map bits.
 @property (readonly) RMMapContents *contents;
 
+// do not retain the delegate so you can let the corresponding controller implement the
+// delegate without circular references
+@property (assign) id<RMMapViewDelegate> delegate;
+
 - (void)moveToLatLong: (CLLocationCoordinate2D)latlong;
 - (void)moveToXYPoint: (RMXYPoint)aPoint;
 

@@ -8,12 +8,21 @@
 
 #import "RMMapView.h"
 #import "RMMapContents.h"
+#import "RMMapViewDelegate.h"
 
 #import "RMTileLoader.h"
 
 #import "RMMercatorToScreenProjection.h"
 #import "RMMarker.h"
 
+@implementation RMMapView (Internal)
+	BOOL delegateHasBeforeMapMove;
+	BOOL delegateHasAfterMapMove;
+	BOOL delegateHasBeforeMapZoomByFactor;
+	BOOL delegateHasAfterMapZoomByFactor;
+	BOOL delegateHasDoubleTapOnMap;
+@end
+
 @implementation RMMapView
 
 -(void) initValues
@@ -69,28 +78,58 @@
 	return [[contents retain] autorelease];
 }
 
+#pragma mark Delegate 
+
+@dynamic delegate;
+
+- (void) setDelegate: (id<RMMapViewDelegate>) _delegate
+{
+	if (delegate == _delegate) return;
+	delegate = _delegate;
+	
+	delegateHasBeforeMapMove = [(NSObject*) delegate respondsToSelector: @selector(beforeMapMove:)];
+	delegateHasAfterMapMove  = [(NSObject*) delegate respondsToSelector: @selector(afterMapMove:)];
+	
+	delegateHasBeforeMapZoomByFactor = [(NSObject*) delegate respondsToSelector: @selector(beforeMapZoom: byFactor: near:)];
+	delegateHasAfterMapZoomByFactor  = [(NSObject*) delegate respondsToSelector: @selector(afterMapZoom: byFactor: near:)];
+
+	delegateHasDoubleTapOnMap = [(NSObject*) delegate respondsToSelector: @selector(doubleTapOnMap:)];	
+
+	NSLog(@"%d %d %d %d %d", delegateHasBeforeMapMove, delegateHasAfterMapMove, delegateHasBeforeMapZoomByFactor, delegateHasAfterMapZoomByFactor, delegateHasDoubleTapOnMap);
+
+}
+
+- (id<RMMapViewDelegate>) delegate
+{
+	return delegate;
+}
+
 #pragma mark Movement
 
 -(void) moveToXYPoint: (RMXYPoint) aPoint
 {
-	// TODO Add delegate hooks
+	if (delegateHasBeforeMapMove) [delegate beforeMapMove: self];
 	[contents moveToXYPoint:aPoint];
+	if (delegateHasAfterMapMove) [delegate afterMapMove: self];
 }
 -(void) moveToLatLong: (CLLocationCoordinate2D) point
 {
-	// TODO Add delegate hooks
+	if (delegateHasBeforeMapMove) [delegate beforeMapMove: self];
 	[contents moveToLatLong:point];
+	if (delegateHasAfterMapMove) [delegate afterMapMove: self];
 }
 
 - (void)moveBy: (CGSize) delta
 {
-	// TODO Add delegate hooks
+	if (delegateHasBeforeMapMove) [delegate beforeMapMove: self];
 	[contents moveBy:delta];
+	if (delegateHasAfterMapMove) [delegate afterMapMove: self];
 }
 - (void)zoomByFactor: (float) zoomFactor near:(CGPoint) center
 {
-	// TODO Add delegate hooks
+	if (delegateHasBeforeMapZoomByFactor) [delegate beforeMapZoom: self byFactor: zoomFactor near: center];
 	[contents zoomByFactor:zoomFactor near:center];
+	if (delegateHasAfterMapZoomByFactor) [delegate afterMapZoom: self byFactor: zoomFactor near: center];
 }
 
 #pragma mark Event handling
@@ -212,30 +251,12 @@
 	//Double-tap detection (currently used for debugging pixelToLatLng() method)
 	if (touch.tapCount == 2)
 	{
-/*		NSLog(@"***************************************************");
-		NSLog(@"Begin double-tap pixel/LatLng translation debug test");
-		CGPoint pixel = [touch locationInView:self];
-		NSLog(@"Double-tap detected at: x=%f, y=%f", pixel.x, pixel.y);
-		CLLocationCoordinate2D touchLatLng = [self pixelToLatLong:pixel];
-		
-		NSLog(@"Double-tap (x=%f, y=%f) is equivalent to: %f, %f", pixel.x, pixel.y, touchLatLng.latitude, touchLatLng.longitude);
-		
-		RMXYPoint merc = [[contents mercatorToScreenProjection] projectScreenPointToXY:pixel];
-		NSLog(@"Which is mercator %f %f", merc.x, merc.y);
-		
-		CLLocationCoordinate2D point;
-		point.latitude = touchLatLng.latitude;
-		point.longitude = touchLatLng.longitude;
-		CGPoint screenPoint = [self latLongToPixel:point];
-		
-		NSLog(@"Converted LatLng to Pixel says we tapped at: x=%f, y=%f", screenPoint.x, screenPoint.y);
-		NSLog(@"***************************************************");
-*/
-
-		
-		// For consistancy with the built-in map app, I want to do something like this:
+		if (delegateHasDoubleTapOnMap) {
+			[delegate doubleTapOnMap: self];
+		} else {
+			// TODO: default behaviour
 			// [contents zoomInToNextNativeZoom];
-	
+		}
 	}
 	//***************************************************************************************
 	

+//
+//  RMMapViewDelegate.h
+//  MapView
+//
+//  Created by Hauke Brandes on 31.10.08.
+//  Copyright 2008 Orbster GmbH. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@class RMMapView;
+
+@protocol RMMapViewDelegate 
+
+@optional
+
+- (void) beforeMapMove: (RMMapView*) map;
+- (void) afterMapMove: (RMMapView*) map ;
+
+- (void) beforeMapZoom: (RMMapView*) map byFactor: (float) zoomFactor near:(CGPoint) center;
+- (void) afterMapZoom: (RMMapView*) map byFactor: (float) zoomFactor near:(CGPoint) center;
+
+- (void) doubleTapOnMap: (RMMapView*) map;
+
+@end

@@ -140,6 +140,7 @@
 		1296F5600EB8743500FF25E0 /* RMMarkerStyle.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RMMarkerStyle.m; sourceTree = "<group>"; };
 		1296F5620EB8745300FF25E0 /* RMMarkerStyles.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RMMarkerStyles.h; sourceTree = "<group>"; };
 		1296F5630EB8745300FF25E0 /* RMMarkerStyles.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RMMarkerStyles.m; sourceTree = "<group>"; };
+		12F2031E0EBB65E9003D7B6B /* RMMapViewDelegate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RMMapViewDelegate.h; sourceTree = "<group>"; };
 		1D30AB110D05D00D00671497 /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
 		1D3623240D0F684500981E51 /* MapViewAppDelegate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MapViewAppDelegate.h; sourceTree = "<group>"; };
 		1D3623250D0F684500981E51 /* MapViewAppDelegate.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MapViewAppDelegate.m; sourceTree = "<group>"; };
@@ -521,6 +522,7 @@
 				B8C9746A0E8A1A50007D16AD /* RMMapView.m */,
 				B8C974B60E8A280A007D16AD /* RMMapContents.h */,
 				B8C974B70E8A280A007D16AD /* RMMapContents.m */,
+				12F2031E0EBB65E9003D7B6B /* RMMapViewDelegate.h */,
 				B8C974B30E8A23C5007D16AD /* Coordinate Systems */,
 				B83E64E20E80E73F001663B6 /* Projections */,
 				B83E64EB0E80E73F001663B6 /* Tile Source */,