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Support PDF card backgrounds #320

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Support PDF card backgrounds #320

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44 changes: 36 additions & 8 deletions lara/views/tweaks/CardView.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -35,7 +35,9 @@ struct CardView: View {
private static let cardfiles = [
"cardBackground@2x.png",
"cardBackgroundCombined@2x.png",
"cardBackgroundCombined-watch@2x.png"
"cardBackgroundCombined-watch@2x.png",
"cardBackground.pdf",
"cardBackgroundCombined.pdf"
]

private struct carditem: Identifiable {
Expand Down Expand Up @@ -393,7 +395,7 @@ struct CardView: View {
if lower.hasSuffix(".pdf") {
if let doc = PDFDocument(url: URL(fileURLWithPath: card.imgpath)),
let page = doc.page(at: 0) {
return page.thumbnail(of: CGSize(width: 640, height: 400), for: .cropBox)
return pdfThumbnail(page: page)
}
} else if let img = UIImage(contentsOfFile: card.imgpath) {
return img
Expand All @@ -403,7 +405,7 @@ struct CardView: View {
if lower.hasSuffix(".pdf") {
if let doc = PDFDocument(data: data),
let page = doc.page(at: 0) {
return page.thumbnail(of: CGSize(width: 640, height: 400), for: .cropBox)
return pdfThumbnail(page: page)
}
} else {
return UIImage(data: data)
Expand All @@ -412,6 +414,18 @@ struct CardView: View {
return nil
}

private func pdfThumbnail(page: PDFPage) -> UIImage? {
let bounds = page.bounds(for: .cropBox)
guard bounds.width > 0, bounds.height > 0 else {
return page.thumbnail(of: CGSize(width: 280, height: 180), for: .cropBox)
}
let targetW: CGFloat = 280
let targetH: CGFloat = 180
let scale = min(targetW / bounds.width, targetH / bounds.height)
let size = CGSize(width: max(bounds.width * scale, 1), height: max(bounds.height * scale, 1))
return page.thumbnail(of: size, for: .cropBox)
}

private func applyreplace(card: carditem, imgdata: Data) {
guard let image = UIImage(data: imgdata) else {
status = "Invalid image data"
Expand All @@ -423,11 +437,7 @@ struct CardView: View {
if lower.hasSuffix(".png") {
payload = image.pngData()
} else if lower.hasSuffix(".pdf") {
let pdf = PDFDocument()
if let page = PDFPage(image: image) {
pdf.insert(page, at: 0)
payload = pdf.dataRepresentation()
}
payload = makePDFPayload(image: image, originalPath: card.imgpath)
} else {
payload = image.pngData()
}
Expand All @@ -447,6 +457,24 @@ struct CardView: View {
}
}

private func makePDFPayload(image: UIImage, originalPath: String) -> Data? {
var pageRect = CGRect(x: 0, y: 0, width: 886, height: 578)
if let doc = PDFDocument(url: URL(fileURLWithPath: originalPath)),
let page = doc.page(at: 0) {
let bounds = page.bounds(for: .cropBox)
if bounds.width > 0, bounds.height > 0 {
pageRect = CGRect(x: 0, y: 0, width: bounds.width, height: bounds.height)
}
}

let renderer = UIGraphicsPDFRenderer(bounds: pageRect)
let data = renderer.pdfData { ctx in
ctx.beginPage()
image.draw(in: pageRect)
}
return data
}

private func backupifneeded(card: carditem) {
let backuppath = card.imgpath + ".backup"
let fm = FileManager.default
Expand Down