Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
100 lines (84 sloc) 3.53 KB
//
// LTMorphingLabel+Pixelate.swift
// https://github.com/lexrus/LTMorphingLabel
//
// The MIT License (MIT)
// Copyright (c) 2017 Lex Tang, http://lexrus.com
//
// 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 UIKit
extension LTMorphingLabel {
@objc
func PixelateLoad() {
effectClosures["Pixelate\(LTMorphingPhases.disappear)"] = {
char, index, progress in
return LTCharacterLimbo(
char: char,
rect: self.previousRects[index],
alpha: CGFloat(1.0 - progress),
size: self.font.pointSize,
drawingProgress: CGFloat(progress))
}
effectClosures["Pixelate\(LTMorphingPhases.appear)"] = {
char, index, progress in
return LTCharacterLimbo(
char: char,
rect: self.newRects[index],
alpha: CGFloat(progress),
size: self.font.pointSize,
drawingProgress: CGFloat(1.0 - progress)
)
}
drawingClosures["Pixelate\(LTMorphingPhases.draw)"] = {
limbo in
if limbo.drawingProgress > 0.0 {
let charImage = self.pixelateImageForCharLimbo(
limbo,
withBlurRadius: limbo.drawingProgress * 6.0
)
charImage.draw(in: limbo.rect)
return true
}
return false
}
}
fileprivate func pixelateImageForCharLimbo(
_ charLimbo: LTCharacterLimbo,
withBlurRadius blurRadius: CGFloat
) -> UIImage {
let scale = min(UIScreen.main.scale, 1.0 / blurRadius)
UIGraphicsBeginImageContextWithOptions(charLimbo.rect.size, false, scale)
let fadeOutAlpha = min(1.0, max(0.0, charLimbo.drawingProgress * -2.0 + 2.0 + 0.01))
let rect = CGRect(
x: 0,
y: 0,
width: charLimbo.rect.size.width,
height: charLimbo.rect.size.height
)
String(charLimbo.char).draw(in: rect, withAttributes: [
.font: self.font as Any,
.foregroundColor: self.textColor.withAlphaComponent(fadeOutAlpha)
])
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage!
}
}
You can’t perform that action at this time.