添加HWPanModal和FLAnimatedImage

Pods/HWPanModal/Sources/Presentable/UIViewController+LayoutHelper.m

@@ -0,0 +1,130 @@
+//
+//  UIViewController+LayoutHelper.m
+//  HWPanModal
+//
+//  Created by heath wang on 2019/4/26.
+//
+
+#import "UIViewController+LayoutHelper.h"
+#import "HWPanModalPresentationController.h"
+#import "UIViewController+PanModalDefault.h"
+
+@implementation UIViewController (LayoutHelper)
+
+- (CGFloat)topLayoutOffset {
+    if (@available(iOS 11, *)) {
+        return [UIApplication sharedApplication].keyWindow.safeAreaInsets.top;
+    } else {
+        return [UIApplication sharedApplication].keyWindow.rootViewController.topLayoutGuide.length;
+    }
+	
+}
+
+- (CGFloat)bottomLayoutOffset {
+    if (@available(iOS 11, *)) {
+        return [UIApplication sharedApplication].keyWindow.safeAreaInsets.bottom;
+    } else {
+        return [UIApplication sharedApplication].keyWindow.rootViewController.bottomLayoutGuide.length;
+    }
+}
+
+- (HWPanModalPresentationController *)hw_presentedVC {
+    /*
+     * Fix iOS13 bug: if we access presentationController before present VC, this will lead `modalPresentationStyle` not working.
+     * refer to: https://github.com/HeathWang/HWPanModal/issues/27
+     * Apple Doc: If you have not yet presented the current view controller, accessing this property creates a presentation controller based on the current value in the modalPresentationStyle property.
+     */
+    
+    /**
+     * fix bug: https://github.com/HeathWang/HWPanModal/issues/37
+     */
+    if (self.presentingViewController) {
+        return [self hw_getPanModalPresentationController];
+    } else {
+        return nil;
+    }
+}
+
+- (HWPanModalPresentationController *)hw_getPanModalPresentationController {
+    UIViewController *ancestorsVC;
+    
+    // seeking for the root presentation VC.
+    if (self.splitViewController) {
+        ancestorsVC = self.splitViewController;
+    } else if (self.navigationController) {
+        ancestorsVC = self.navigationController;
+    } else if (self.tabBarController) {
+        ancestorsVC = self.tabBarController;
+    } else {
+        ancestorsVC = self;
+    }
+    
+    if ([ancestorsVC.presentationController isMemberOfClass:HWPanModalPresentationController.class]) {
+        return (HWPanModalPresentationController *) ancestorsVC.presentationController;
+    }
+    return nil;
+}
+
+/**
+ Returns the short form Y postion
+
+ - Note: If voiceover is on, the `longFormYPos` is returned.
+ We do not support short form when voiceover is on as it would make it difficult for user to navigate.
+*/
+- (CGFloat)shortFormYPos {
+    if (UIAccessibilityIsVoiceOverRunning()) {
+        return self.longFormYPos;
+    } else {
+    	CGFloat shortFormYPos = [self topMarginFromPanModalHeight:[self shortFormHeight]] + [self topOffset];
+		return MAX(shortFormYPos, self.longFormYPos);
+    }
+}
+
+- (CGFloat)mediumFormYPos {
+    if (UIAccessibilityIsVoiceOverRunning()) {
+        return self.longFormYPos;
+    } else {
+        CGFloat mediumFormYPos = [self topMarginFromPanModalHeight:[self mediumFormHeight]] + [self topOffset];
+        return MAX(mediumFormYPos, self.longFormYPos);
+    }
+}
+
+- (CGFloat)longFormYPos {
+	return MAX([self topMarginFromPanModalHeight:[self longFormHeight]], [self topMarginFromPanModalHeight:PanModalHeightMake(PanModalHeightTypeMax, 0)]) + [self topOffset];
+}
+
+/**
+ * Use the container view for relative positioning as this view's frame
+   is adjusted in PanModalPresentationController
+ */
+- (CGFloat)bottomYPos {
+	if (self.hw_presentedVC.containerView) {
+		return self.hw_presentedVC.containerView.bounds.size.height - [self topOffset];
+	}
+	return self.view.bounds.size.height;
+}
+
+- (CGFloat)topMarginFromPanModalHeight:(PanModalHeight)panModalHeight {
+	switch (panModalHeight.heightType) {
+		case PanModalHeightTypeMax:
+			return 0.0f;
+		case PanModalHeightTypeMaxTopInset:
+			return panModalHeight.height;
+		case PanModalHeightTypeContent:
+			return self.bottomYPos - (panModalHeight.height + self.bottomLayoutOffset);
+		case PanModalHeightTypeContentIgnoringSafeArea:
+			return self.bottomYPos - panModalHeight.height;
+		case PanModalHeightTypeIntrinsic:
+		{
+			[self.view layoutIfNeeded];
+
+            CGSize targetSize = CGSizeMake(self.hw_presentedVC.containerView ? self.hw_presentedVC.containerView.bounds.size.width : [UIScreen mainScreen].bounds.size.width, UILayoutFittingCompressedSize.height);
+            CGFloat intrinsicHeight = [self.view systemLayoutSizeFittingSize:targetSize].height;
+			return self.bottomYPos - (intrinsicHeight + self.bottomLayoutOffset);
+		}
+		default:
+			return 0;
+	}
+}
+
+@end