/
BlurryMaskingView.swift
305 lines (223 loc) 路 8.52 KB
/
BlurryMaskingView.swift
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
//
// Copyright (c) 2018 Muukii <muukii.app@gmail.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
#if !COCOAPODS
import BrightroomEngine
#endif
import Verge
public final class BlurryMaskingView: PixelEditorCodeBasedView, UIScrollViewDelegate {
private struct State: Equatable {
fileprivate(set) var bounds: CGRect = .zero
fileprivate(set) var proposedCrop: EditingCrop?
fileprivate(set) var brushSize: CanvasView.BrushSize = .point(30)
func brushPixelSize() -> CGFloat? {
guard let proposedCrop = proposedCrop else {
return nil
}
let aspectRatio = PixelAspectRatio(proposedCrop.cropExtent.size)
let size = aspectRatio.sizeThatFits(in: bounds.size)
let (min, _) = proposedCrop.calculateZoomScale(visibleSize: size)
let scale = proposedCrop.scaleForDrawing()
switch brushSize {
case let .point(points):
return points / scale / min
case let .pixel(pixels):
return pixels
}
}
}
private final class ContainerView: PixelEditorCodeBasedView {
func addContent(_ view: UIView) {
addSubview(view)
view.frame = bounds
view.autoresizingMask = [.flexibleHeight, .flexibleWidth]
}
}
public var isBackdropImageViewHidden: Bool {
get {
backingView.isImageViewHidden
}
set {
backingView.isImageViewHidden = newValue
}
}
public var isblurryImageViewHidden: Bool {
get {
blurryImageView.isHidden
}
set {
blurryImageView.isHidden = newValue
}
}
let backingView: CropView
private let containerView = ContainerView()
private let blurryImageView = _ImageView()
private let drawingView = SmoothPathDrawingView()
private let canvasView = CanvasView()
private var subscriptions = Set<AnyCancellable>()
private let editingStack: EditingStack
private let store: UIStateStore<State, Never>
private var currentBrush: OvalBrush?
private var loadingOverlayFactory: (() -> UIView)?
private weak var currentLoadingOverlay: UIView?
private var isBinding = false
// MARK: - Initializers
public init(editingStack: EditingStack) {
self.editingStack = editingStack
self.backingView = .init(
editingStack: editingStack,
contentInset: .zero
)
self.backingView.accessibilityIdentifier = "BlurryMasking"
store = .init(
initialState: .init(),
logger: nil
)
super.init(frame: .zero)
setUp: do {
backgroundColor = .clear
addSubview(backingView)
backingView.isGuideInteractionEnabled = false
backingView.clipsToGuide = true
backingView.setCropOutsideOverlay(nil)
backingView.setCropInsideOverlay(nil)
backingView.setOverlayInImageView(containerView)
backingView.isScrollEnabled = false
backingView.isZoomEnabled = false
backingView.isAutoApplyEditingStackEnabled = false
containerView.addContent(blurryImageView)
containerView.addContent(canvasView)
containerView.addContent(drawingView)
blurryImageView.accessibilityIdentifier = "blurryImageView"
blurryImageView.isUserInteractionEnabled = false
blurryImageView.contentMode = .scaleAspectFit
blurryImageView.mask = canvasView
clipsToBounds = true
}
drawingView.handlers = drawingView.handlers&>.modify {
$0.willBeginPan = { [unowned self] path in
guard let pixelSize = store.state.primitive.brushPixelSize() else {
assertionFailure("It seems currently loading state.")
return
}
currentBrush = .init(color: .black, pixelSize: pixelSize)
let drawnPath = DrawnPath(brush: currentBrush!, path: path)
canvasView.previewDrawnPath = drawnPath
}
$0.panning = { [unowned self] path in
canvasView.updatePreviewDrawing()
}
$0.didFinishPan = { [unowned self] path in
canvasView.updatePreviewDrawing()
let _path = (path.copy() as! UIBezierPath)
let drawnPath = DrawnPath(brush: currentBrush!, path: _path)
canvasView.previewDrawnPath = nil
editingStack.append(blurringMaskPaths: CollectionOfOne(drawnPath))
currentBrush = nil
}
}
editingStack.sinkState { [weak self] (state: Changes<EditingStack.State>) in
guard let self = self else { return }
if let state = state.mapIfPresent(\.loadedState) {
state.ifChanged(\.currentEdit.crop).do { cropRect in
// scaling for drawing paths
[self.canvasView, self.drawingView].forEach { view in
view.bounds = .init(origin: .zero, size: cropRect.imageSize)
let scale = Geometry.diagonalRatio(to: cropRect.scrollViewContentSize(), from: cropRect.imageSize)
view.transform = .init(scaleX: scale, y: scale)
view.frame.origin = .zero
}
/**
To avoid running pending layout operations from User Initiated actions.
*/
if cropRect != self.store.state.proposedCrop {
self.store.commit {
$0.proposedCrop = cropRect
}
}
}
}
}
.store(in: &subscriptions)
defaultAppearance: do {
setLoadingOverlay(factory: {
LoadingBlurryOverlayView(effect: UIBlurEffect(style: .dark), activityIndicatorStyle: .large)
})
}
}
override public func willMove(toSuperview newSuperview: UIView?) {
super.willMove(toSuperview: newSuperview)
guard newSuperview != nil else { return }
if isBinding == false {
isBinding = true
editingStack.start()
binding: do {
editingStack.sinkState { [weak self] (state: Changes<EditingStack.State>) in
guard let self = self else { return }
if let state = state.mapIfPresent(\.loadedState) {
state.ifChanged(\.editingPreviewImage).do { image in
self.blurryImageView.display(image: BlurredMask.blur(image: image))
}
state.ifChanged(\.currentEdit.drawings.blurredMaskPaths).do { paths in
self.canvasView.setResolvedDrawnPaths(paths)
}
}
}
.store(in: &subscriptions)
}
}
}
public func setLoadingOverlay(factory: (() -> UIView)?) {
_pixeleditor_ensureMainThread()
loadingOverlayFactory = factory
}
public func setBrushSize(_ size: CanvasView.BrushSize) {
store.commit {
$0.brushSize = size
}
}
override public func layoutSubviews() {
super.layoutSubviews()
backingView.frame = bounds
store.commit {
if $0.bounds != bounds {
$0.bounds = bounds
}
}
}
}
import SwiftUI
public struct SwiftUIBlurryMaskingView: UIViewControllerRepresentable {
public typealias UIViewControllerType = _PixelEditor_WrapperViewController<BlurryMaskingView>
private let editingStack: EditingStack
public init(
editingStack: EditingStack
) {
self.editingStack = editingStack
}
public func makeUIViewController(context: Context) -> _PixelEditor_WrapperViewController<BlurryMaskingView> {
let view = BlurryMaskingView(editingStack: editingStack)
let controller = _PixelEditor_WrapperViewController.init(bodyView: view)
return controller
}
public func updateUIViewController(_ uiViewController: _PixelEditor_WrapperViewController<BlurryMaskingView>, context: Context) {
}
}