- Added paper unfolding demonstration

JTGestureBasedTableViewDemo.xcodeproj/project.pbxproj

@@ -21,6 +21,8 @@
 		52D621A014DF7F1E00400117 /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 52D6217E14DF7F1E00400117 /* Foundation.framework */; };
 		52D621A814DF7F1E00400117 /* InfoPlist.strings in Resources */ = {isa = PBXBuildFile; fileRef = 52D621A614DF7F1E00400117 /* InfoPlist.strings */; };
 		52D621AB14DF7F1E00400117 /* JTGestureBasedTableViewDemoTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 52D621AA14DF7F1E00400117 /* JTGestureBasedTableViewDemoTests.m */; };
+		52D621BA14DF84A500400117 /* TransformableTableViewCell.m in Sources */ = {isa = PBXBuildFile; fileRef = 52D621B914DF84A500400117 /* TransformableTableViewCell.m */; };
+		52D621BC14DF86D600400117 /* QuartzCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 52D621BB14DF86D600400117 /* QuartzCore.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -54,13 +56,17 @@
 		52D621A714DF7F1E00400117 /* en */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = en; path = en.lproj/InfoPlist.strings; sourceTree = "<group>"; };
 		52D621A914DF7F1E00400117 /* JTGestureBasedTableViewDemoTests.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = JTGestureBasedTableViewDemoTests.h; sourceTree = "<group>"; };
 		52D621AA14DF7F1E00400117 /* JTGestureBasedTableViewDemoTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = JTGestureBasedTableViewDemoTests.m; sourceTree = "<group>"; };
+		52D621B814DF84A500400117 /* TransformableTableViewCell.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TransformableTableViewCell.h; sourceTree = "<group>"; };
+		52D621B914DF84A500400117 /* TransformableTableViewCell.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = TransformableTableViewCell.m; sourceTree = "<group>"; };
+		52D621BB14DF86D600400117 /* QuartzCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuartzCore.framework; path = System/Library/Frameworks/QuartzCore.framework; sourceTree = SDKROOT; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
 		52D6217514DF7F1E00400117 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				52D621BC14DF86D600400117 /* QuartzCore.framework in Frameworks */,
 				52D6217D14DF7F1E00400117 /* UIKit.framework in Frameworks */,
 				52D6217F14DF7F1E00400117 /* Foundation.framework in Frameworks */,
 				52D6218114DF7F1E00400117 /* CoreGraphics.framework in Frameworks */,
@@ -83,6 +89,7 @@
 		52D6216D14DF7F1E00400117 = {
 			isa = PBXGroup;
 			children = (
+				52D621BB14DF86D600400117 /* QuartzCore.framework */,
 				52D6218214DF7F1E00400117 /* JTGestureBasedTableViewDemo */,
 				52D621A314DF7F1E00400117 /* JTGestureBasedTableViewDemoTests */,
 				52D6217B14DF7F1E00400117 /* Frameworks */,
@@ -117,6 +124,8 @@
 				52D6218C14DF7F1E00400117 /* AppDelegate.m */,
 				52D6218E14DF7F1E00400117 /* ViewController.h */,
 				52D6218F14DF7F1E00400117 /* ViewController.m */,
+				52D621B814DF84A500400117 /* TransformableTableViewCell.h */,
+				52D621B914DF84A500400117 /* TransformableTableViewCell.m */,
 				52D6219114DF7F1E00400117 /* ViewController_iPhone.xib */,
 				52D6219414DF7F1E00400117 /* ViewController_iPad.xib */,
 				52D6218314DF7F1E00400117 /* Supporting Files */,
@@ -264,6 +273,7 @@
 				52D6218914DF7F1E00400117 /* main.m in Sources */,
 				52D6218D14DF7F1E00400117 /* AppDelegate.m in Sources */,
 				52D6219014DF7F1E00400117 /* ViewController.m in Sources */,
+				52D621BA14DF84A500400117 /* TransformableTableViewCell.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -327,7 +337,7 @@
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				ARCHS = "$(ARCHS_STANDARD_32_BIT)";
 				CLANG_ENABLE_OBJC_ARC = YES;
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer: Keith Li (ZMNYK85DYB)";
 				COPY_PHASE_STRIP = NO;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
@@ -342,6 +352,7 @@
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 5.0;
+				"PROVISIONING_PROFILE[sdk=iphoneos*]" = "1CA8CFA0-0B9D-4AC6-BFFE-A7C2D73369FF";
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};

JTGestureBasedTableViewDemo/TransformableTableViewCell.h

@@ -0,0 +1,15 @@
+//
+//  TransformableTableViewCell.h
+//  JTGestureBasedTableViewDemo
+//
+//  Created by James Tang on 2/6/12.
+//  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface TransformableTableViewCell : UITableViewCell
+
+@property (nonatomic, assign) CGFloat finishedHeight;
+
+@end

JTGestureBasedTableViewDemo/TransformableTableViewCell.m

@@ -0,0 +1,73 @@
+//
+//  TransformableTableViewCell.m
+//  JTGestureBasedTableViewDemo
+//
+//  Created by James Tang on 2/6/12.
+//  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
+//
+
+#import "TransformableTableViewCell.h"
+#import <QuartzCore/QuartzCore.h>
+
+@implementation TransformableTableViewCell
+
+@synthesize finishedHeight;
+
+- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
+{
+    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
+    if (self) {
+        // Initialization code
+
+        [self addObserver:self forKeyPath:@"frame"
+                  options:NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew
+                  context:nil];
+
+
+        CATransform3D transform = CATransform3DIdentity;
+        transform.m34 = -1/500.f;
+        [self.contentView.layer setSublayerTransform:transform];
+
+
+        self.textLabel.layer.anchorPoint = CGPointMake(0.5, 0.0);
+        self.textLabel.clipsToBounds = NO;
+
+        self.detailTextLabel.layer.anchorPoint = CGPointMake(0.5, 1.0);
+        self.detailTextLabel.clipsToBounds = NO;
+        self.selectionStyle = UITableViewCellSelectionStyleNone;
+    }
+    return self;
+}
+
+- (void)setSelected:(BOOL)selected animated:(BOOL)animated
+{
+    [super setSelected:selected animated:animated];
+
+    // Configure the view for the selected state
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
+    if ([keyPath isEqualToString:@"frame"]) {
+
+        CGFloat fraction = self.frame.size.height / self.finishedHeight;
+
+        CATransform3D transform = CATransform3DMakeRotation((M_PI / 2) - asinf(fraction), -1, 0, 0);
+        [self.textLabel.layer setTransform:transform];
+        [self.detailTextLabel.layer setTransform:CATransform3DMakeRotation((M_PI / 2) - asinf(fraction), 1, 0, 0)];
+    }
+}
+
+- (void)layoutSubviews {
+    [super layoutSubviews];
+
+    CGFloat fraction = 1 / (self.frame.size.height / self.finishedHeight);
+
+    self.textLabel.backgroundColor = [UIColor colorWithWhite:0.8 alpha:1];
+    self.detailTextLabel.backgroundColor = [UIColor colorWithWhite:0.6 alpha:1];
+
+    CGFloat labelHeight = self.contentView.frame.size.height/2*fraction;
+    self.textLabel.frame = CGRectMake(0, 0, self.contentView.frame.size.width, labelHeight);
+    self.detailTextLabel.frame = CGRectMake(0,self.contentView.frame.size.height - labelHeight, self.contentView.frame.size.width, labelHeight);
+}
+
+@end

JTGestureBasedTableViewDemo/ViewController.m

@@ -7,13 +7,21 @@
 //
 
 #import "ViewController.h"
+#import "TransformableTableViewCell.h"
+#import <QuartzCore/QuartzCore.h>
+
+@interface ViewController ()
+@property (nonatomic, strong) NSMutableArray *selectedIndexPaths;
+@end
 
 @implementation ViewController
+@synthesize selectedIndexPaths;
 
 #pragma mark - View lifecycle
 
 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
     if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
+        self.selectedIndexPaths = [NSMutableArray array];
     }
     return self;
 }
@@ -74,26 +82,35 @@ - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
     static NSString *cellIdentifier = @"MyCell";
 
-    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
+    TransformableTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
     if (cell == nil) {
-        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
+        cell = [[TransformableTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];
+        cell.finishedHeight = 88;
     }
-
+    
     cell.textLabel.text = [NSString stringWithFormat:@"%d", indexPath.row];
+    cell.detailTextLabel.text = @" ";
 
     return cell;
 }
 
 #pragma mark UITableViewDelegate
 
 - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
-    if ([[tableView indexPathForSelectedRow] isEqual:indexPath]) {
-        return 44 * 2;
+    NSUInteger index = [self.selectedIndexPaths indexOfObject:indexPath];
+    if (index != NSNotFound) {
+        return 88;
     }
-    return 44;
+    return 36;
 }
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
+    NSUInteger index = [self.selectedIndexPaths indexOfObject:indexPath];
+    if (index != NSNotFound) {
+        [self.selectedIndexPaths removeObjectAtIndex:index];
+    } else {
+        [self.selectedIndexPaths addObject:indexPath];
+    }
     [tableView beginUpdates];
     [tableView endUpdates];
 }