kylefang/HHPanningTableViewCell
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Optional custom action trigger. Optional velocity. Optional max pan distance.

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This commit is contained in:
Justin Bergen
2012-11-03 22:28:40 -06:00
parent 4046f4d0f5
commit b8ec7e8a73
5 changed files with 50 additions and 8 deletions
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11
HHPanningTableViewCell/HHPanningTableViewCell.h
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@@ -28,12 +28,22 @@
#import <UIKit/UIKit.h>
@class HHPanningTableViewCell;
typedef enum {
HHPanningTableViewCellDirectionRight = UISwipeGestureRecognizerDirectionRight,
HHPanningTableViewCellDirectionLeft = UISwipeGestureRecognizerDirectionLeft,
} HHPanningTableViewCellDirection;
@protocol HHPanningTableViewCellDelegate <NSObject>
@optional
//If implemented this this will be triggered instead of fully revealing
- (void)panningTableViewCellDidTrigger:(HHPanningTableViewCell *)cell inDirection:(HHPanningTableViewCellDirection)direction;
@end
@interface HHPanningTableViewCell : UITableViewCell
@@ -44,6 +54,7 @@ typedef enum {
@property (nonatomic, assign) NSInteger directionMask;
@property (nonatomic, assign) BOOL shouldBounce;
@property (nonatomic, strong) id<HHPanningTableViewCellDelegate> delegate;
- (BOOL)isDrawerRevealed;
- (void)setDrawerRevealed:(BOOL)revealed animated:(BOOL)animated;

19
HHPanningTableViewCell/HHPanningTableViewCell.m
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@@ -36,9 +36,11 @@
#define HH_PANNING_ANIMATION_DURATION 0.1f
#define HH_PANNING_BOUNCE_DISTANCE 20.0f
#define HH_PANNING_MINIMUM_PAN 50.0f
#define HH_PANNING_BOUNCE_DISTANCE 10.0f
#define HH_PANNING_MINIMUM_PAN 1.0f
#define HH_PANNING_MAXIMUM_PAN 0.0f //Set to 0.0f for full view width
#define HH_PANNING_TRIGGER_OFFSET 100.0f
#define HH_PANNING_USE_VELOCITY YES
@interface HHPanningTableViewCell () <UIGestureRecognizerDelegate>
@@ -418,7 +420,7 @@ static HHPanningTableViewCellDirection HHOppositeDirection(HHPanningTableViewCel
containerViewFrame.origin.x = self.panOriginX + totalPanX;
CGFloat width = self.bounds.size.width;
CGFloat width = (HH_PANNING_MAXIMUM_PAN > 0.0f) ? HH_PANNING_MAXIMUM_PAN : self.bounds.size.width;
NSInteger directionMask = self.directionMask;
CGFloat leftLimit = (directionMask & HHPanningTableViewCellDirectionLeft) ? (-1.0 * width) : 0.0f;
CGFloat rightLimit = (directionMask & HHPanningTableViewCellDirectionRight) ? width : 0.0f;
@@ -443,6 +445,7 @@ static HHPanningTableViewCellDirection HHOppositeDirection(HHPanningTableViewCel
HHPanningTableViewCellDirection panDirection = (totalPanX > 0.0f) ? HHPanningTableViewCellDirectionRight : HHPanningTableViewCellDirectionLeft;
HHPanningTableViewCellDirection normalizedPanDirection = drawerRevealed ? HHOppositeDirection(panDirection) : panDirection;
NSInteger directionMask = self.directionMask;
BOOL isDelegateTrigger = [self.delegate respondsToSelector:@selector(panningTableViewCellDidTrigger:inDirection:)];
if (drawerRevealed) {
directionMask = isOffsetRight ? HHPanningTableViewCellDirectionRight : HHPanningTableViewCellDirectionLeft;
@@ -454,7 +457,7 @@ static HHPanningTableViewCellDirection HHOppositeDirection(HHPanningTableViewCel
if (fabsf(totalPanX) > triggerOffset) {
drawerRevealed = !drawerRevealed;
}
else {
else if (HH_PANNING_USE_VELOCITY) {
CGPoint velocity = [gestureRecognizer velocityInView:self];
CGFloat velocityX = velocity.x;
@@ -470,7 +473,13 @@ static HHPanningTableViewCellDirection HHOppositeDirection(HHPanningTableViewCel
direction = isOffsetRight ? HHPanningTableViewCellDirectionRight : HHPanningTableViewCellDirectionLeft;
}
[self setDrawerRevealed:drawerRevealed direction:direction animated:YES];
if (isDelegateTrigger && (drawerRevealed != drawerWasRevealed)) {
[self setDrawerRevealed:NO direction:direction animated:YES];
[self.delegate panningTableViewCellDidTrigger:self inDirection:panDirection];
}
else {
[self setDrawerRevealed:drawerRevealed direction:direction animated:YES];
}
self.panning = NO;
}

3
HHPanningTableViewCell/TableViewController.h
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@@ -27,9 +27,10 @@
*/
#import <UIKit/UIKit.h>
#import "HHPanningTableViewCell.h"
@interface TableViewController : UITableViewController
@interface TableViewController : UITableViewController <HHPanningTableViewCellDelegate>
- (id)init;

24
HHPanningTableViewCell/TableViewController.m
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@@ -48,7 +48,7 @@
self = [super initWithNibName:@"TableViewController" bundle:nil];
if (self != nil) {
self.rowTitles = [NSArray arrayWithObjects:@"Pan direction: None", @"Pan direction: Right", @"Pan direction: Left", @"Pan direction: Both", nil];
self.rowTitles = [NSArray arrayWithObjects:@"Pan direction: None", @"Pan direction: Right", @"Pan direction: Left", @"Pan direction: Both", @"Custom trigger", nil];
}
return self;
@@ -111,7 +111,14 @@
drawerView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"dark_dotted"]];
cell.drawerView = drawerView;
cell.directionMask = indexPath.row;
if (indexPath.row < 4) {
cell.directionMask = indexPath.row;
}
else {
cell.directionMask = HHPanningTableViewCellDirectionLeft + HHPanningTableViewCellDirectionRight;
cell.delegate = self;
}
}
cell.textLabel.text = [self.rowTitles objectAtIndex:indexPath.row];
@@ -142,4 +149,17 @@
{
}
#pragma mark -
#pragma mark HHPanningTableViewCellDelegate
- (void)panningTableViewCellDidTrigger:(HHPanningTableViewCell *)cell inDirection:(HHPanningTableViewCellDirection)direction
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Custom Action"
message:@"You triggered a custom action"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
@end

1
README.md
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@@ -32,6 +32,7 @@ The code presented here is identical to the one used in the shipped product.
* Use HHPanningTableViewCell instances for your table cells
* Set a panning direction mask on the cells
* Provide a drawer view for the cells
* Optionally, implement the HHPanningTableViewCellDelegate method to trigger your own custom action.
* Refer to the demo application for details
## License