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PDF highlight position info on iOS

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This commit is contained in:
Jackson Harper
2023-02-02 16:10:18 +08:00
parent d8aa36f148
commit 395ea3335e
1 changed files with 36 additions and 4 deletions
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40
apple/OmnivoreKit/Sources/App/PDFSupport/PDFViewer.swift
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@ -269,6 +269,34 @@ import Utils
return result
}
func heightBefore(pageIndex: PageIndex) -> Double {
var totalHeight = 0.0
for idx in 0 ..< pageIndex {
if let page = document.pageInfoForPage(at: idx) {
totalHeight += page.size.height
}
}
return totalHeight
}
func documentTotalHeight() -> Double {
var totalHeight = 0.0
for idx in 0 ..< document.pageCount {
if let page = document.pageInfoForPage(at: idx) {
totalHeight += page.size.height
}
}
return totalHeight
}
func highlightTop(pageView: PDFPageView, highlight: HighlightAnnotation) -> Double {
if let pageInfo = pageView.pageInfo {
return pageInfo.size.height - highlight.boundingBox.minY
}
return 0.0
}
// swiftlint:disable:next function_body_length
func highlightSelection(pageView: PDFPageView, selectedText: String, dataService: DataService) -> String {
let highlightID = UUID().uuidString.lowercased()
@ -290,6 +318,9 @@ import Utils
let overlapping = overlappingHighlights(pageView: pageView, highlight: highlight)
if let patchData = try? highlight.generateInstantJSON(), let patch = String(data: patchData, encoding: .utf8) {
let top = highlightTop(pageView: pageView, highlight: highlight)
let positionPercent = (heightBefore(pageIndex: pageView.pageIndex) + top) / documentTotalHeight()
if overlapping.isEmpty {
viewModel.createHighlight(
dataService: dataService,
@ -297,8 +328,7 @@ import Utils
highlightID: highlightID,
quote: quote,
patch: patch,
// TODO
positionPercent: nil,
positionPercent: positionPercent,
positionAnchorIndex: Int(pageView.pageIndex)
)
} else {
@ -310,6 +340,9 @@ import Utils
boundingBox: boundingBox,
pageIndex: Int(pageView.pageIndex)
) {
let top = boundingBox.minY
let positionPercent = (heightBefore(pageIndex: pageView.pageIndex) + top) / documentTotalHeight()
mergedHighlight.customData = highlight.customData
document.add(annotations: [mergedHighlight])
document.remove(annotations: overlapping + [highlight])
@ -320,8 +353,7 @@ import Utils
highlightID: highlightID,
quote: quote,
patch: patch,
// TODO:
positionPercent: nil,
positionPercent: positionPercent,
positionAnchorIndex: Int(pageView.pageIndex),
overlapHighlightIdList: highlightIds(overlapping)
)