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mastodon-ios
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Code Issues 17 Releases Wiki Activity

fix: profile avatar fade animation curve logic issue

This commit is contained in:
CMK 2021-05-27 15:27:12 +08:00
parent 423bdb2473
commit bdb1a120f1
2 changed files with 7 additions and 6 deletions
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10
Mastodon/Scene/Profile/Header/ProfileHeaderViewController.swift
View File

@ -362,7 +362,7 @@ extension ProfileHeaderViewController {
}
}
func updateHeaderScrollProgress(_ progress: CGFloat) {
func updateHeaderScrollProgress(_ progress: CGFloat, throttle: CGFloat) {
// os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: progress: %.2f", ((#file as NSString).lastPathComponent), #line, #function, progress)
updateHeaderBottomShadow(progress: progress)
@ -408,12 +408,12 @@ extension ProfileHeaderViewController {
viewModel.isTitleViewContentOffsetSet.value = true
}
// set avatar
// set avatar fade
if progress > 0 {
setProfileBannerFade(alpha: 0)
} else if progress > -0.3 {
// y = -(10/3)x
let alpha = -10.0 / 3.0 * progress
} else if progress > -abs(throttle) {
// y = -(1/0.8T)x
let alpha = -1 / abs(0.8 * throttle) * progress
setProfileBannerFade(alpha: alpha)
} else {
setProfileBannerFade(alpha: 1)

3
Mastodon/Scene/Profile/ProfileViewController.swift
View File

@ -652,7 +652,8 @@ extension ProfileViewController: UIScrollViewDelegate {
// elastically banner image
let headerScrollProgress = containerScrollView.contentOffset.y / topMaxContentOffsetY
profileHeaderViewController.updateHeaderScrollProgress(headerScrollProgress)
let throttle = ProfileHeaderViewController.headerMinHeight / topMaxContentOffsetY
profileHeaderViewController.updateHeaderScrollProgress(headerScrollProgress, throttle: throttle)
}
}