Pan Gesture

Example/JVFloatingDrawer/JVDrawerSettingsTableViewController.m

@@ -10,7 +10,7 @@
 #import "JVFloatingDrawerSpringAnimator.h"
 #import "AppDelegate.h"
 
-@interface JVDrawerSettingsTableViewController ()
+@interface JVDrawerSettingsTableViewController () <JVFloatingDrawerPanGestureDelegate>
 
 @property (nonatomic, strong, readonly) JVFloatingDrawerSpringAnimator *drawerAnimator;
 
@@ -95,4 +95,10 @@ - (void)didReceiveMemoryWarning {
     // Dispose of any resources that can be recreated.
 }
 
+#pragma mark - JVFloatingDrawerPanGestureDelegate
+
+- (BOOL)shouldOpenDrawerWithSide:(JVFloatingDrawerSide)drawerSide {
+    return YES;
+}
+
 @end

Example/JVFloatingDrawer/JVGitHubViewController.m

@@ -8,10 +8,12 @@
 
 #import "JVGitHubViewController.h"
 #import "AppDelegate.h"
+#import "JVFloatingDrawerViewController.h"
+
 
 static NSString * const kJVGithubProjectPage = @"http://github.com/JVillella/JVFloatingDrawer";
 
-@interface JVGitHubViewController ()
+@interface JVGitHubViewController () <JVFloatingDrawerPanGestureDelegate>
 
 @property (weak, nonatomic) IBOutlet UIWebView *webview;
 
@@ -40,4 +42,10 @@ - (IBAction)actionToggleRightDrawer:(id)sender {
     [[AppDelegate globalDelegate] toggleRightDrawer:self animated:YES];
 }
 
+#pragma mark - JVFloatingDrawerPanGestureDelegate
+
+- (BOOL)shouldOpenDrawerWithSide:(JVFloatingDrawerSide)drawerSide {
+    return YES;
+}
+
 @end

Example/JVFloatingDrawer/JVLeftDrawerTableViewCell.m

@@ -18,6 +18,7 @@ @interface JVLeftDrawerTableViewCell ()
 @implementation JVLeftDrawerTableViewCell
 
 - (void)awakeFromNib {
+    [super awakeFromNib];
     self.selectionStyle = UITableViewCellSelectionStyleNone;
     self.backgroundColor = [UIColor clearColor];
 }

Example/Podfile

@@ -1,10 +1,10 @@
 source 'https://github.com/CocoaPods/Specs.git'
 
-target 'JVFloatingDrawer', :exclusive => true do
+target 'JVFloatingDrawer' do
 	pod "JVFloatingDrawer", :path => "../"
 end
 
-target 'JVFloatingDrawerTests', :exclusive => true do
+target 'JVFloatingDrawerTests' do
 	pod "JVFloatingDrawer", :path => "../"
 end
 

Example/Podfile.lock

@@ -6,9 +6,11 @@ DEPENDENCIES:
 
 EXTERNAL SOURCES:
   JVFloatingDrawer:
-    :path: "../"
+    :path: ../
 
 SPEC CHECKSUMS:
   JVFloatingDrawer: 4782b1df21411aef2c1818f3b346cace02cc2e24
 
-COCOAPODS: 0.37.2
+PODFILE CHECKSUM: f05e356e11bb0527b08f50ec30940e20a7f1673c
+
+COCOAPODS: 1.3.1

Pod/Classes/JVFloatingDrawerAnimation.h

@@ -57,6 +57,23 @@
  */
 - (void)didRotateOpenDrawerWithOpenSide:(JVFloatingDrawerSide)drawerSide sideView:(UIView *)sideView centerView:(UIView *)centerView;
 
+/**
+ *  Implementations should move the side view and the center view.
+ *
+ *  @param trans      The point that your finger points to
+ *  @param sideView   The view of the side of the drawer to be presented
+ *  @param centerView The center view
+ */
+@optional
+- (void)moveWithTranslation:(CGPoint)trans
+                   sideView:(UIView *)sideView
+                 centerView:(UIView *)centerView;
+
+@optional
+- (void)moveBackWithTranslation:(CGPoint)trans
+                       sideView:(UIView *)sideView
+                     centerView:(UIView *)centerView;
+
 @end
 
 

Pod/Classes/JVFloatingDrawerSpringAnimator.m

@@ -35,7 +35,7 @@ - (void)setup {
 #pragma mark Presentation/Dismissal
 
 - (void)presentationWithSide:(JVFloatingDrawerSide)drawerSide sideView:(UIView *)sideView centerView:(UIView *)centerView animated:(BOOL)animated completion:(void (^)(BOOL))completion {
-    void (^springAnimation)() = ^{
+    void (^springAnimation)(void) = ^{
         [self applyTransformsWithSide:drawerSide sideView:sideView centerView:centerView];
     };
 
@@ -53,7 +53,7 @@ - (void)presentationWithSide:(JVFloatingDrawerSide)drawerSide sideView:(UIView *
 }
 
 - (void)dismissWithSide:(JVFloatingDrawerSide)drawerSide sideView:(UIView *)sideView centerView:(UIView *)centerView animated:(BOOL)animated completion:(void (^)(BOOL))completion {
-    void (^springAnimation)() = ^{
+    void (^springAnimation)(void) = ^{
         [self removeTransformsWithSide:drawerSide sideView:sideView centerView:centerView];
     };
 
@@ -74,7 +74,7 @@ - (void)dismissWithSide:(JVFloatingDrawerSide)drawerSide sideView:(UIView *)side
 - (void)willRotateOpenDrawerWithOpenSide:(JVFloatingDrawerSide)drawerSide sideView:(UIView *)sideView centerView:(UIView *)centerView {}
 
 - (void)didRotateOpenDrawerWithOpenSide:(JVFloatingDrawerSide)drawerSide sideView:(UIView *)sideView centerView:(UIView *)centerView {
-    void (^springAnimation)() = ^{
+    void (^springAnimation)(void) = ^{
         [self applyTransformsWithSide:drawerSide sideView:sideView centerView:centerView];
     };
 
@@ -121,18 +121,19 @@ - (void)setAnchorPoint:(CGPoint)anchorPoint forView:(UIView *)view {
 #pragma mark Transforms
 
 - (void)applyTransformsWithSide:(JVFloatingDrawerSide)drawerSide sideView:(UIView *)sideView centerView:(UIView *)centerView {
-    CGFloat direction = drawerSide == JVFloatingDrawerSideLeft ? 1.0 : -1.0;
-    CGFloat sideWidth = sideView.bounds.size.width;
-    CGFloat centerWidth = centerView.bounds.size.width;
-    CGFloat centerViewHorizontalOffset = direction * sideWidth;
-    CGFloat scaledCenterViewHorizontalOffset = direction * (sideWidth - (centerWidth - kJVCenterViewDestinationScale * centerWidth) / 2.0);
+    CGFloat sideWidth   = sideView.bounds.size.width;
+    CGFloat direction = (drawerSide == JVFloatingDrawerSideLeft) ? 1.0 : -1.0;
 
-    CGAffineTransform sideTranslate = CGAffineTransformMakeTranslation(centerViewHorizontalOffset, 0.0);
-    sideView.transform = sideTranslate;
+    CGFloat sideViewHorizontalOffset = direction * sideWidth;
+    CGFloat centerScaleValue = kJVCenterViewDestinationScale;
+
+    CGFloat scaledCenterViewHorizontalOffset = sideViewHorizontalOffset - direction * (sideWidth * (1 - centerScaleValue));
 
+    CGAffineTransform sideTranslate = CGAffineTransformMakeTranslation(sideViewHorizontalOffset, 0.0);
+    sideView.transform = sideTranslate;
 
+    CGAffineTransform centerScale = CGAffineTransformMakeScale(centerScaleValue, centerScaleValue);
     CGAffineTransform centerTranslate = CGAffineTransformMakeTranslation(scaledCenterViewHorizontalOffset, 0.0);
-    CGAffineTransform centerScale = CGAffineTransformMakeScale(kJVCenterViewDestinationScale, kJVCenterViewDestinationScale);
     centerView.transform = CGAffineTransformConcat(centerScale, centerTranslate);
 }
 
@@ -141,4 +142,53 @@ - (void)removeTransformsWithSide:(JVFloatingDrawerSide)drawerSide sideView:(UIVi
     centerView.transform = CGAffineTransformIdentity;
 }
 
+- (void)moveBackWithTranslation:(CGPoint)trans sideView:(UIView *)sideView centerView:(UIView *)centerView {
+    CGFloat transX = trans.x;
+    CGFloat transWidth = fabs(transX);
+    BOOL toLeft = (transX >= 0.0);
+
+    CGFloat sideWidth   = sideView.bounds.size.width;
+
+    CGFloat direction = toLeft ? 1.0 : -1.0;
+    CGFloat ratio = (transWidth / sideWidth);
+
+    if (ratio > 1.0) return;
+
+    CGFloat sideViewHorizontalOffset = direction * (transWidth - sideWidth);
+    CGFloat centerScaleValue = kJVCenterViewDestinationScale + (1.0 - kJVCenterViewDestinationScale) * ratio;
+
+    CGFloat scaledCenterViewHorizontalOffset = sideViewHorizontalOffset * centerScaleValue;
+
+    CGAffineTransform sideTranslate = CGAffineTransformMakeTranslation(sideViewHorizontalOffset, 0.0);
+    sideView.transform = sideTranslate;
+
+    CGAffineTransform centerScale = CGAffineTransformMakeScale(centerScaleValue, centerScaleValue);
+    CGAffineTransform centerTranslate = CGAffineTransformMakeTranslation(scaledCenterViewHorizontalOffset, 0.0);
+    centerView.transform = CGAffineTransformConcat(centerScale, centerTranslate);
+}
+
+- (void)moveWithTranslation:(CGPoint)trans sideView:(UIView *)sideView centerView:(UIView *)centerView {
+    CGFloat transX = trans.x;
+    CGFloat transWidth = fabs(transX);
+    BOOL toLeft = (transX >= 0.0);
+
+    CGFloat sideWidth   = sideView.bounds.size.width;
+    CGFloat direction = toLeft ? 1.0 : -1.0;
+    CGFloat ratio = (transWidth / sideWidth);
+
+    if (ratio > 1.0) return;
+
+    CGFloat sideViewHorizontalOffset = direction * transWidth;
+    CGFloat centerScaleValue = 1.0 - (1.0 - kJVCenterViewDestinationScale) * ratio;
+
+    CGFloat scaledCenterViewHorizontalOffset = sideViewHorizontalOffset - direction * (transWidth * (1 - centerScaleValue));
+
+    CGAffineTransform sideTranslate = CGAffineTransformMakeTranslation(sideViewHorizontalOffset, 0.0);
+    sideView.transform = sideTranslate;
+
+    CGAffineTransform centerScale = CGAffineTransformMakeScale(centerScaleValue, centerScaleValue);
+    CGAffineTransform centerTranslate = CGAffineTransformMakeTranslation(scaledCenterViewHorizontalOffset, 0.0);
+    centerView.transform = CGAffineTransformConcat(centerScale, centerTranslate);
+}
+
 @end

Pod/Classes/JVFloatingDrawerView.m

@@ -8,7 +8,7 @@
 
 #import "JVFloatingDrawerView.h"
 
-static const CGFloat kJVCenterViewContainerCornerRadius = 5.0;
+static const CGFloat kJVCenterViewContainerCornerRadius = 6.0;
 static const CGFloat kJVDefaultViewContainerWidth = 280.0;
 
 @interface JVFloatingDrawerView ()

Pod/Classes/JVFloatingDrawerViewController.h

@@ -16,6 +16,12 @@ typedef NS_ENUM(NSInteger, JVFloatingDrawerSide) {
     JVFloatingDrawerSideRight
 };
 
+@protocol JVFloatingDrawerPanGestureDelegate <NSObject>
+@optional
+- (BOOL)shouldOpenDrawerWithSide:(JVFloatingDrawerSide)drawerSide;
+
+@end
+
 @interface JVFloatingDrawerViewController : UIViewController
 
 #pragma mark - Managed View Controllers
@@ -50,4 +56,9 @@ typedef NS_ENUM(NSInteger, JVFloatingDrawerSide) {
 
 @property (nonatomic, strong) UIImage *backgroundImage;
 
+#pragma mark - Pan Gesture
+
+@property (nonatomic, assign) CGFloat minimumDragDistance;
+@property (nonatomic, assign) CGFloat dragRespondingWidth;
+
 @end