Added gesture recognisers

Author: jrturton

Pentominoes/Base.lproj/Main.storyboard

@@ -17,9 +17,30 @@
                         <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                        <gestureRecognizers/>
+                        <connections>
+                            <outletCollection property="gestureRecognizers" destination="zzi-L9-7Va" appends="YES" id="5Rz-MP-lCt"/>
+                            <outletCollection property="gestureRecognizers" destination="5gy-Pc-Dai" appends="YES" id="9ve-IB-loS"/>
+                        </connections>
                     </view>
+                    <connections>
+                        <outlet property="pan" destination="5gy-Pc-Dai" id="5XS-9t-SRU"/>
+                        <outlet property="tap" destination="zzi-L9-7Va" id="tQd-Vs-0Vu"/>
+                    </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+                <tapGestureRecognizer id="zzi-L9-7Va">
+                    <connections>
+                        <action selector="handleTap:" destination="BYZ-38-t0r" id="LdE-hu-pgC"/>
+                        <outlet property="delegate" destination="BYZ-38-t0r" id="FoT-mt-wOf"/>
+                    </connections>
+                </tapGestureRecognizer>
+                <panGestureRecognizer minimumNumberOfTouches="1" maximumNumberOfTouches="1" id="5gy-Pc-Dai">
+                    <connections>
+                        <action selector="handlePan:" destination="BYZ-38-t0r" id="4ru-Ld-i89"/>
+                        <outlet property="delegate" destination="BYZ-38-t0r" id="EXE-kg-iQR"/>
+                    </connections>
+                </panGestureRecognizer>
             </objects>
         </scene>
     </scenes>

Pentominoes/PentominoesViewController.swift

@@ -2,7 +2,10 @@ import UIKit
 
 public class PentominoesViewController: UIViewController {
 
-    private let gridSize: CGFloat = 30
+    @IBOutlet var tap: UITapGestureRecognizer!
+    @IBOutlet var pan: UIPanGestureRecognizer!
+    
+    private let gridSize: CGFloat = 35
     var boardView: BoardView!
     var tileViews: [TileView]!
     public var board: Board! {
@@ -48,4 +51,60 @@ public class PentominoesViewController: UIViewController {
 
         }
     }
+    
+    var activeTile: TileView? {
+        willSet {
+            if let oldActiveTile = activeTile {
+                oldActiveTile.lifted = false
+                oldActiveTile.layer.zPosition = 0
+            }
+        }
+        didSet {
+            if let newActiveTile = activeTile {
+                newActiveTile.lifted = true
+                newActiveTile.layer.zPosition = 10
+            }
+        }
+    }
+    
+    @IBAction func handleTap(sender: UITapGestureRecognizer) {
+        activeTile?.rotate(true)
+    }
+    
+    @IBAction func handlePan(sender: UIPanGestureRecognizer) {
+        var fingerClearedLocation = sender.locationInView(view)
+        fingerClearedLocation.y -= (activeTile?.bounds.height ?? 0.0) * 0.5
+        switch sender.state {
+        case .Began:
+            UIView.animateWithDuration(0.1) { self.activeTile?.center = fingerClearedLocation }
+        case .Changed:
+            activeTile?.center = fingerClearedLocation
+        case .Ended, .Cancelled:
+            // TODO: put it down in a permissible place
+            activeTile = nil
+        default:
+            break
+        }
+    }
+    
+    
+    
+}
+
+extension PentominoesViewController: UIGestureRecognizerDelegate {
+    public func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWithGestureRecognizer otherGestureRecognizer: UIGestureRecognizer) -> Bool {
+        return true
+    }
+    
+    public func gestureRecognizerShouldBegin(gestureRecognizer: UIGestureRecognizer) -> Bool {
+        if gestureRecognizer != pan {
+            return true
+        }
+        let location = gestureRecognizer.locationInView(view)
+        if let hitTile = view.hitTest(location, withEvent: nil) as? TileView {
+            activeTile = hitTile
+            return true
+        }
+        return false
+    }
 }