Added haptic API to the button

Author: TimOliver

TORoundedButton/TORoundedButton.h

@@ -33,6 +33,14 @@ typedef NS_ENUM(NSInteger, TORoundedButtonBackgroundStyle) {
     TORoundedButtonBackgroundStyleGlass
 };
 
+/// The types of impacts that the button can generate when tapped by the user.
+typedef NS_ENUM(NSInteger, TORoundedButtonImpactStyle) {
+    TORoundedButtonImpactStyleNone = -1,
+    TORoundedButtonImpactStyleLight = UIImpactFeedbackStyleLight,
+    TORoundedButtonImpactStyleMedium = UIImpactFeedbackStyleMedium,
+    TORoundedButtonImpactStyleHeavy = UIImpactFeedbackStyleHeavy
+};
+
 NS_SWIFT_NAME(RoundedButtonDelegate)
 @protocol TORoundedButtonDelegate <NSObject>
 
@@ -75,6 +83,9 @@ IB_DESIGNABLE @interface TORoundedButton : UIControl
 /// The style, whether static or dynamic of the button's background view.
 @property (nonatomic, assign) TORoundedButtonBackgroundStyle backgroundStyle;
 
+/// The haptic impact style that this button will generate when tapped by the user. (Default is medium)
+@property (nonatomic, assign) TORoundedButtonImpactStyle impactStyle;
+
 /// When `backgroundStyle` is set to `.blur`, the specific blur style to apply.
 @property (nonatomic, assign) UIBlurEffectStyle blurStyle;
 

TORoundedButton/TORoundedButton.m

@@ -63,6 +63,9 @@ @implementation TORoundedButton {
     /** Maintain a reference to the corner configuration in case we swap out the background view */
     UICornerConfiguration *_cornerConfiguration API_AVAILABLE(ios(26.0));
 #endif
+
+    /** The current haptic feedback generator that will play vibrations when the button is tapped. */
+    UIImpactFeedbackGenerator *_impactGenerator;
 }
 
 #pragma mark - View Creation -
@@ -118,6 +121,7 @@ - (void)_roundedButtonCommonInit TOROUNDEDBUTTON_OBJC_DIRECT {
     _tappedTintColorBrightnessOffset = !TORoundedButtonFloatIsZero(_tappedTintColorBrightnessOffset) ?: -0.15f;
     _contentInset = (UIEdgeInsets){15.0, 15.0, 15.0, 15.0};
     _blurStyle = UIBlurEffectStyleDark;
+    _impactStyle = TORoundedButtonImpactStyleMedium;
 
     // Set the corner radius depending on system version
 #ifdef __IPHONE_26_0
@@ -211,6 +215,19 @@ - (UIView *)_makeBackgroundViewWithStyle:(TORoundedButtonBackgroundStyle)style T
     return backgroundView;
 }
 
+- (UIImpactFeedbackGenerator *)_makeImpactGeneratorWithStyle:(TORoundedButtonImpactStyle)style TOROUNDEDBUTTON_OBJC_DIRECT {
+    if (style == TORoundedButtonImpactStyleNone) {
+        return nil;
+    }
+
+    const UIImpactFeedbackStyle impactStyle = (UIImpactFeedbackStyle)style;
+    if (@available(iOS 17.5, *)) {
+        return [UIImpactFeedbackGenerator feedbackGeneratorWithStyle:impactStyle forView:self];
+    }
+
+    return [[UIImpactFeedbackGenerator alloc] initWithStyle:impactStyle];
+}
+
 #pragma mark - View Lifecycle -
 
 - (void)didMoveToSuperview {
@@ -222,6 +239,11 @@ - (void)didMoveToSuperview {
     // Defer making the background until we're added to the subview in case the user changes it
     _backgroundView = [self _makeBackgroundViewWithStyle:_backgroundStyle];
     [_containerView insertSubview:_backgroundView atIndex:0];
+
+    // If the button has been configured to set up an impact generator, create it now.
+    if (_impactStyle != TORoundedButtonImpactStyleNone && !_impactGenerator) {
+        _impactGenerator = [self _makeImpactGeneratorWithStyle:_impactStyle];
+    }
 }
 
 - (void)tintColorDidChange {
@@ -308,6 +330,9 @@ - (CGSize)sizeThatFits:(CGSize)size {
 - (void)_didTouchDownInside {
     _isTapped = YES;
 
+    // Preheat the impact generator to prepare playing it when we tap up.
+    [_impactGenerator prepare];
+
     // The user touched their finger down into the button bounds
     [self _setLabelAlphaTappedAnimated:NO];
     [self _setBackgroundColorTappedAnimated:YES];
@@ -317,6 +342,9 @@ - (void)_didTouchDownInside {
 - (void)_didTouchUpInside {
     _isTapped = NO;
 
+    // Play the impact.
+    [_impactGenerator impactOccurred];
+
     // The user lifted their finger up from inside the button bounds
     [self _setLabelAlphaTappedAnimated:YES];
     [self _setBackgroundColorTappedAnimated:YES];
@@ -585,6 +613,12 @@ - (void)setEnabled:(BOOL)enabled {
     _containerView.alpha = enabled ? 1 : 0.4;
 }
 
+- (void)setImpactStyle:(TORoundedButtonImpactStyle)impactStyle {
+    if (_impactStyle == impactStyle) { return; }
+    _impactStyle = impactStyle;
+    _impactGenerator = [self _makeImpactGeneratorWithStyle:impactStyle];
+}
+
 #pragma mark - Private -
 
 - (void)_setBackgroundTintColor:(UIColor *)tintColor TOROUNDEDBUTTON_OBJC_DIRECT {