mirror of
https://github.com/MessageKit/MessageKit.git
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74 lines
3.2 KiB
Swift
74 lines
3.2 KiB
Swift
/*
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MIT License
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Copyright (c) 2017-2018 MessageKit
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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import Foundation
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open class ContactMessageSizeCalculator: MessageSizeCalculator {
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public var incomingMessageNameLabelInsets = UIEdgeInsets(top: 7, left: 46, bottom: 7, right: 30)
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public var outgoingMessageNameLabelInsets = UIEdgeInsets(top: 7, left: 41, bottom: 7, right: 35)
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public var contactLabelFont = UIFont.preferredFont(forTextStyle: .body)
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internal func contactLabelInsets(for message: MessageType) -> UIEdgeInsets {
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let dataSource = messagesLayout.messagesDataSource
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let isFromCurrentSender = dataSource.isFromCurrentSender(message: message)
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return isFromCurrentSender ? outgoingMessageNameLabelInsets : incomingMessageNameLabelInsets
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}
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open override func messageContainerMaxWidth(for message: MessageType) -> CGFloat {
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let maxWidth = super.messageContainerMaxWidth(for: message)
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let textInsets = contactLabelInsets(for: message)
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return maxWidth - textInsets.horizontal
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}
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open override func messageContainerSize(for message: MessageType) -> CGSize {
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let maxWidth = messageContainerMaxWidth(for: message)
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var messageContainerSize: CGSize
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let attributedText: NSAttributedString
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switch message.kind {
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case .contact(let item):
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attributedText = NSAttributedString(string: item.displayName, attributes: [.font: contactLabelFont])
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default:
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fatalError("messageContainerSize received unhandled MessageDataType: \(message.kind)")
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}
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messageContainerSize = labelSize(for: attributedText, considering: maxWidth)
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let messageInsets = contactLabelInsets(for: message)
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messageContainerSize.width += messageInsets.horizontal
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messageContainerSize.height += messageInsets.vertical
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return messageContainerSize
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}
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open override func configure(attributes: UICollectionViewLayoutAttributes) {
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super.configure(attributes: attributes)
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guard let attributes = attributes as? MessagesCollectionViewLayoutAttributes else { return }
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attributes.messageLabelFont = contactLabelFont
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}
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}
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