119 lines
4.2 KiB
Swift
119 lines
4.2 KiB
Swift
//
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// Copyright (c) 2022 Open Whisper Systems. All rights reserved.
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//
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import UIKit
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class ImageAttachmentPrepViewController: AttachmentPrepViewController {
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private let model: ImageEditorModel
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private lazy var editorView = ImageEditorView(model: model, delegate: self)
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required init?(attachmentApprovalItem: AttachmentApprovalItem) {
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guard let imageEditorModel = attachmentApprovalItem.imageEditorModel else {
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owsFailDebug("imageEditorModel is empty.")
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return nil
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}
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self.model = imageEditorModel
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super.init(attachmentApprovalItem: attachmentApprovalItem)
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}
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override var contentView: AttachmentPrepContentView {
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editorView
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}
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override func prepareContentView() {
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editorView.roundCorners = true
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editorView.textInteractionModes = [ .tap, .move ]
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editorView.configureSubviews()
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}
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override var shouldHideControls: Bool {
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editorView.shouldHideControls || super.shouldHideControls
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}
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override var canSaveMedia: Bool {
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if model.isDirty() {
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return true
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}
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return super.canSaveMedia
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}
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/**
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* Bottom toolbar in edit mode is always the same height and can be cached.
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*/
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private static let editModeToolbarHeight: CGFloat = {
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let toolbar = ImageEditorBottomBar(buttonProvider: nil)
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let size = toolbar.systemLayoutSizeFitting(CGSize(width: UIView.noIntrinsicMetric, height: .greatestFiniteMagnitude),
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withHorizontalFittingPriority: .fittingSizeLevel,
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verticalFittingPriority: .fittingSizeLevel)
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return size.height
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}()
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override var mediaEditingToolbarHeight: CGFloat? {
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ImageAttachmentPrepViewController.editModeToolbarHeight
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}
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// MARK: - Tools
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override func activatePenTool() {
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Logger.verbose("")
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let viewController = ImageEditorViewController(model: model)
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presentMediaTool(viewController: viewController)
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}
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override func activateCropTool() {
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Logger.verbose("")
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guard let srcImage = ImageEditorCanvasView.loadSrcImage(model: model) else {
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owsFailDebug("Couldn't load src image.")
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return
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}
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// We want to render a preview image that "flattens" all of the brush strokes, text items,
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// into the background image without applying the transform (e.g. rotating, etc.), so we
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// use a default transform.
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let previewTransform = ImageEditorTransform.defaultTransform(srcImageSizePixels: model.srcImageSizePixels)
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guard let previewImage = ImageEditorCanvasView.renderForOutput(model: model, transform: previewTransform) else {
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owsFailDebug("Couldn't generate preview image.")
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return
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}
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let cropTool = ImageEditorCropViewController(model: model, srcImage: srcImage, previewImage: previewImage)
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presentMediaTool(viewController: cropTool)
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}
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}
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// MARK: -
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extension ImageAttachmentPrepViewController: ImageEditorViewDelegate {
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private func openTextTool(with textItem: ImageEditorTextItem, isNewItem: Bool, editText: Bool) {
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let textEditor = ImageEditorViewController(model: model)
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textEditor.selectTextItem(textItem, isNewItem: isNewItem, startEditing: editText)
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presentMediaTool(viewController: textEditor)
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}
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func imageEditorView(_: ImageEditorView, didRequestAddTextItem textItem: ImageEditorTextItem) {
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openTextTool(with: textItem, isNewItem: true, editText: true)
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}
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func imageEditorView(_: ImageEditorView, didTapTextItem textItem: ImageEditorTextItem) {
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openTextTool(with: textItem, isNewItem: false, editText: false)
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}
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func imageEditorView(_ imageEditorView: ImageEditorView, didMoveTextItem textItem: ImageEditorTextItem) {
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openTextTool(with: textItem, isNewItem: false, editText: false)
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}
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func imageEditorViewDidUpdateSelection(_ imageEditorView: ImageEditorView) { }
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func imageEditorDidRequestToolbarVisibilityUpdate(_: ImageEditorView) {
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prepDelegate?.attachmentPrepViewControllerDidRequestUpdateControlsVisibility(self, completion: nil)
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}
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}
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