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executable file
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/*
* Copyright (c) 2013 Nils Mattisson, Martin Hartl
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#import "DropdownMenuController.h"
#import "DropdownMenuSegue.h"
#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
@interface DropdownMenuController()
@property (nonatomic, readonly) CGFloat offset;
- (void)iOS6_hideMenuCompleted;
@end
@implementation DropdownMenuController {
bool shouldDisplayDropShape;
float fadeAlpha;
float trianglePlacement;
}
CAShapeLayer *openMenuShape;
CAShapeLayer *closedMenuShape;
- (void)viewDidLoad {
[super viewDidLoad];
shouldDisplayDropShape = YES;
fadeAlpha = 0.5f;
trianglePlacement = 0.87f;
}
- (void) viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
// Set the current view controller to the one embedded (in the storyboard).
self.currentViewController = self.childViewControllers.firstObject;
// Draw the shapes for the open and close menu triangle.
[self drawOpenLayer];
[self drawClosedLayer];
}
//Enables/Disables the 'drop' triangle from displaying when down
- (void) dropShapeShouldShowWhenOpen:(BOOL)shouldShow {
shouldDisplayDropShape = shouldShow;
}
//Sets the color that background content will fade to when the menu is open
- (void) setFadeTintWithColor:(UIColor *) color {
self.view.backgroundColor = color;
}
//Sets the amount of fade that should be applied to background content when menu is open
- (void) setFadeAmountWithAlpha:(float) alphaVal {
fadeAlpha = alphaVal;
}
- (void) setTrianglePlacement: (float) trianglePlacementVal {
trianglePlacement = trianglePlacementVal;
}
- (void) setMenubarTitle:(NSString *) menubarTitle {
self.titleLabel.text = menubarTitle;
}
- (void) setMenubarBackground:(UIColor *) color {
self.menubar.backgroundColor = color;
}
- (IBAction) menuButtonAction: (UIButton *) sender {
[self toggleMenu];
}
- (IBAction) listButtonAction: (UIButton *) sender {
[self hideMenu];
}
- (void) toggleMenu {
if(self.menu.hidden) {
[self showMenu];
} else {
[self hideMenu];
}
}
- (void) showMenu {
self.menu.hidden = NO;
self.menu.translatesAutoresizingMaskIntoConstraints = YES;
[closedMenuShape removeFromSuperlayer];
if (shouldDisplayDropShape)
{
[[[self view] layer] addSublayer:openMenuShape];
}
// Set new origin of menu
CGRect menuFrame = self.menu.frame;
menuFrame.origin.y = self.menubar.frame.size.height-self.offset;
// Set new alpha of Container View (to get fade effect)
float containerAlpha = fadeAlpha;
if (SYSTEM_VERSION_LESS_THAN(@"7.0")) {
[UIView beginAnimations:nil context:nil];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
self.menu.frame = menuFrame;
[self.container setAlpha:containerAlpha];
} else {
[UIView animateWithDuration:0.4
delay:0.0
usingSpringWithDamping:1.0
initialSpringVelocity:4.0
options: UIViewAnimationOptionCurveEaseInOut
animations:^{
self.menu.frame = menuFrame;
[self.container setAlpha: containerAlpha];
}
completion:^(BOOL finished){
}];
}
[UIView commitAnimations];
}
- (void) hideMenu {
// Set the border layer to hidden menu state
[openMenuShape removeFromSuperlayer];
[[[self view] layer] addSublayer:closedMenuShape];
// Set new origin of menu
CGRect menuFrame = self.menu.frame;
menuFrame.origin.y = self.menubar.frame.size.height-menuFrame.size.height;
// Set new alpha of Container View (to get fade effect)
float containerAlpha = 1.0f;
if (SYSTEM_VERSION_LESS_THAN(@"7.0")) {
[UIView beginAnimations:nil context:nil];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(iOS6_hideMenuCompleted)];
self.menu.frame = menuFrame;
[self.container setAlpha:containerAlpha];
} else {
[UIView animateWithDuration:0.3f
delay:0.05f
usingSpringWithDamping:1.0
initialSpringVelocity:4.0
options: UIViewAnimationOptionCurveEaseInOut
animations:^{
self.menu.frame = menuFrame;
[self.container setAlpha: containerAlpha];
}
completion:^(BOOL finished){
self.menu.hidden = YES;
}];
}
[UIView commitAnimations];
}
- (void)iOS6_hideMenuCompleted {
self.menu.hidden = YES;
}
-(CGFloat)offset {
UIInterfaceOrientation interfaceOrientation;
// Check if we are running an iOS version that support `interfaceOrientation`
// Otherwise, use statusBarOrientation.
if (SYSTEM_VERSION_LESS_THAN(@"8.0")) {
interfaceOrientation = self.interfaceOrientation;
} else {
interfaceOrientation = [UIApplication sharedApplication].statusBarOrientation;
}
return UIInterfaceOrientationIsLandscape(interfaceOrientation) ? 20.0f : 0.0f;
}
- (void) drawOpenLayer {
[openMenuShape removeFromSuperlayer];
openMenuShape = [CAShapeLayer layer];
// Constants to ease drawing the border and the stroke.
int height = self.menubar.frame.size.height;
int width = self.menubar.frame.size.width;
int triangleDirection = 1; // 1 for down, -1 for up.
int triangleSize = 8;
int trianglePosition = trianglePlacement*width;
// The path for the triangle (showing that the menu is open).
UIBezierPath *triangleShape = [[UIBezierPath alloc] init];
[triangleShape moveToPoint:CGPointMake(trianglePosition, height)];
[triangleShape addLineToPoint:CGPointMake(trianglePosition+triangleSize, height+triangleDirection*triangleSize)];
[triangleShape addLineToPoint:CGPointMake(trianglePosition+2*triangleSize, height)];
[triangleShape addLineToPoint:CGPointMake(trianglePosition, height)];
[openMenuShape setPath:triangleShape.CGPath];
[openMenuShape setFillColor:[self.menubar.backgroundColor CGColor]];
//[openMenuShape setFillColor:[self.menu.backgroundColor CGColor]];
UIBezierPath *borderPath = [[UIBezierPath alloc] init];
[borderPath moveToPoint:CGPointMake(0, height)];
[borderPath addLineToPoint:CGPointMake(trianglePosition, height)];
[borderPath addLineToPoint:CGPointMake(trianglePosition+triangleSize, height+triangleDirection*triangleSize)];
[borderPath addLineToPoint:CGPointMake(trianglePosition+2*triangleSize, height)];
[borderPath addLineToPoint:CGPointMake(width, height)];
[openMenuShape setPath:borderPath.CGPath];
[openMenuShape setStrokeColor:[[UIColor whiteColor] CGColor]];
[openMenuShape setBounds:CGRectMake(0.0f, 0.0f, height+triangleSize, width)];
[openMenuShape setAnchorPoint:CGPointMake(0.0f, 0.0f)];
[openMenuShape setPosition:CGPointMake(0.0f, -self.offset)];
}
- (void) drawClosedLayer {
[closedMenuShape removeFromSuperlayer];
closedMenuShape = [CAShapeLayer layer];
// Constants to ease drawing the border and the stroke.
int height = self.menubar.frame.size.height;
int width = self.menubar.frame.size.width;
// The path for the border (just a straight line)
UIBezierPath *borderPath = [[UIBezierPath alloc] init];
[borderPath moveToPoint:CGPointMake(0, height)];
[borderPath addLineToPoint:CGPointMake(width, height)];
[closedMenuShape setPath:borderPath.CGPath];
[closedMenuShape setStrokeColor:[[UIColor whiteColor] CGColor]];
[closedMenuShape setBounds:CGRectMake(0.0f, 0.0f, height, width)];
[closedMenuShape setAnchorPoint:CGPointMake(0.0f, 0.0f)];
[closedMenuShape setPosition:CGPointMake(0.0f, -self.offset)];
}
- (IBAction)displayGestureForTapRecognizer:(UITapGestureRecognizer *)recognizer {
// Get the location of the gesture
CGPoint tapLocation = [recognizer locationInView:self.view];
// NSLog(@"Tap location X:%1.0f, Y:%1.0f", tapLocation.x, tapLocation.y);
// If menu is open, and the tap is outside of the menu, close it.
if (!CGRectContainsPoint(self.menu.frame, tapLocation) && !self.menu.hidden) {
[self hideMenu];
}
}
#pragma mark - Rotation
-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
[super didRotateFromInterfaceOrientation:fromInterfaceOrientation];
CGRect menuFrame = self.menu.frame;
menuFrame.origin.y = self.menubar.frame.size.height - self.offset;
self.menu.frame = menuFrame;
[self drawClosedLayer];
[self drawOpenLayer];
if (self.menu.hidden) {
[[[self view] layer] addSublayer:closedMenuShape];
} else {
if (shouldDisplayDropShape) {
[[[self view] layer] addSublayer:openMenuShape];
}
}
}
-(void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
[super willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];
[closedMenuShape removeFromSuperlayer];
[openMenuShape removeFromSuperlayer];
}
#pragma mark - Segue
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
self.currentSegueIdentifier = segue.identifier;
[super prepareForSegue:segue sender:sender];
}
- (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender {
if ([self.currentSegueIdentifier isEqual:identifier]) {
//Dont perform segue, if visible ViewController is already the destination ViewController
return NO;
}
return YES;
}
#pragma mark - Memory Warning
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
@end
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