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fix pdf convert

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reng 4 months ago
parent a97a98c74f
commit 7abd0c2afd
7 changed files with 719 additions and 39 deletions
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  1. 418
      src-tauri/Cargo.lock
  2. 2
      src-tauri/Cargo.toml
  3. 75
      src-tauri/src/lib.rs
  4. 198
      src-tauri/src/raw_convert.rs
  5. 39
      src-tauri/src/util.rs
  6. 4
      src-tauri/tauri.conf.json
  7. 20
      src/App.jsx

418
src-tauri/Cargo.lock generated
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@ -43,6 +43,15 @@ version = "0.1.3"
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"num-derive",
"num-traits",
"once_cell",
"paste",
"profiling",
"rand 0.8.5",
"rand_chacha 0.3.1",
"simd_helpers",
"system-deps",
"thiserror 1.0.69",
"v_frame",
"wasm-bindgen",
]
[[package]]
name = "ravif"
version = "0.11.20"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5825c26fddd16ab9f515930d49028a630efec172e903483c94796cfe31893e6b"
dependencies = [
"avif-serialize",
"imgref",
"loop9",
"quick-error",
"rav1e",
"rayon",
"rgb",
]
[[package]] [[package]]
name = "raw-window-handle" name = "raw-window-handle"
version = "0.6.2" version = "0.6.2"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "20675572f6f24e9e76ef639bc5552774ed45f1c30e2951e1e99c59888861c539" checksum = "20675572f6f24e9e76ef639bc5552774ed45f1c30e2951e1e99c59888861c539"
[[package]]
name = "rayon"
version = "1.10.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b418a60154510ca1a002a752ca9714984e21e4241e804d32555251faf8b78ffa"
dependencies = [
"either",
"rayon-core",
]
[[package]]
name = "rayon-core"
version = "1.12.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1465873a3dfdaa8ae7cb14b4383657caab0b3e8a0aa9ae8e04b044854c8dfce2"
dependencies = [
"crossbeam-deque",
"crossbeam-utils",
]
[[package]] [[package]]
name = "redox_syscall" name = "redox_syscall"
version = "0.5.15" version = "0.5.15"
@ -4381,6 +4757,15 @@ version = "0.3.7"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe" checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
[[package]]
name = "simd_helpers"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "95890f873bec569a0362c235787f3aca6e1e887302ba4840839bcc6459c42da6"
dependencies = [
"quote",
]
[[package]] [[package]]
name = "simplecss" name = "simplecss"
version = "0.2.2" version = "0.2.2"
@ -5124,6 +5509,17 @@ dependencies = [
"syn 2.0.104", "syn 2.0.104",
] ]
[[package]]
name = "tiff"
version = "0.9.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ba1310fcea54c6a9a4fd1aad794ecc02c31682f6bfbecdf460bf19533eed1e3e"
dependencies = [
"flate2",
"jpeg-decoder",
"weezl",
]
[[package]] [[package]]
name = "time" name = "time"
version = "0.3.41" version = "0.3.41"
@ -5705,6 +6101,17 @@ dependencies = [
"wasm-bindgen", "wasm-bindgen",
] ]
[[package]]
name = "v_frame"
version = "0.3.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "666b7727c8875d6ab5db9533418d7c764233ac9c0cff1d469aec8fa127597be2"
dependencies = [
"aligned-vec",
"num-traits",
"wasm-bindgen",
]
[[package]] [[package]]
name = "vcpkg" name = "vcpkg"
version = "0.2.15" version = "0.2.15"
@ -6819,6 +7226,15 @@ version = "0.4.12"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3f423a2c17029964870cfaabb1f13dfab7d092a62a29a89264f4d36990ca414a" checksum = "3f423a2c17029964870cfaabb1f13dfab7d092a62a29a89264f4d36990ca414a"
[[package]]
name = "zune-inflate"
version = "0.2.54"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "73ab332fe2f6680068f3582b16a24f90ad7096d5d39b974d1c0aff0125116f02"
dependencies = [
"simd-adler32",
]
[[package]] [[package]]
name = "zune-jpeg" name = "zune-jpeg"
version = "0.4.19" version = "0.4.19"

2
src-tauri/Cargo.toml
Unescape View File

@ -27,3 +27,5 @@ winprint = "0.2.0"
tauri-plugin-dialog = "2" tauri-plugin-dialog = "2"
printpdf = { version="0.8.2", features= ["png"] } printpdf = { version="0.8.2", features= ["png"] }
tauri-plugin-fs = "2" tauri-plugin-fs = "2"
image = "0.25.6"
flate2 = "1.1.2"

75
src-tauri/src/lib.rs
Unescape View File

@ -8,7 +8,8 @@ use winprint::ticket::{
}; };
// use util::imageToPdf; // use util::imageToPdf;
mod util; // mod util;
mod raw_convert;
#[tauri::command] #[tauri::command]
fn get_all_printers() -> Vec<String> { fn get_all_printers() -> Vec<String> {
@ -24,6 +25,28 @@ fn get_my_device(device_name: String) -> Option<PrinterDevice> {
printers.into_iter().find(|x| x.name() == device_name) printers.into_iter().find(|x| x.name() == device_name)
} }
#[tauri::command]
fn convert_pdf(document_path: String) -> Result<String, String> {
let path = Path::new(&document_path);
if !path.exists() {
return Err(format!("File does not exist: {}", document_path));
}
match raw_convert::imageToPdf2(document_path.clone()) {
Ok(pdf_path) => {
// Print the converted PDF using the printer
// printer.print(Path::new(&pdf_path), ticket).unwrap();
println!("PDF converted successfully to {}", pdf_path);
Ok(pdf_path)
}
Err(e) => {
println!("Error converting image to PDF: {}", e);
Err(e)
}
}
}
#[tauri::command] #[tauri::command]
fn get_printer_capabilities(device_name: String) -> HashMap<String, Vec<String>> { fn get_printer_capabilities(device_name: String) -> HashMap<String, Vec<String>> {
let my_device = match get_my_device(device_name) { let my_device = match get_my_device(device_name) {
@ -117,6 +140,31 @@ fn print_document(
document_path, size, dpi, color document_path, size, dpi, color
); );
let path = Path::new(&document_path);
if path
.extension()
.map(|ext| !ext.eq_ignore_ascii_case("pdf"))
.unwrap_or(true)
{
match raw_convert::imageToPdf2(document_path.clone()) {
Ok(pdf_path) => {
print_document(
device_name,
pdf_path,
dpi,
color,
size,
);
}
Err(e) => {
println!("Error converting image to PDF: {}", e);
}
}
return;
}
let my_device = match get_my_device(device_name.clone()) { let my_device = match get_my_device(device_name.clone()) {
Some(device) => device, Some(device) => device,
None => { None => {
@ -182,30 +230,12 @@ fn print_document(
let path = Path::new(&document_path); let path = Path::new(&document_path);
let printer = PdfiumPrinter::new(my_device); let printer = PdfiumPrinter::new(my_device);
// let theprinter = ImagePrinter::new(my_device);
if path
.extension()
.map(|ext| ext.eq_ignore_ascii_case("pdf"))
.unwrap_or(false)
{
printer.print(path, ticket).unwrap(); printer.print(path, ticket).unwrap();
} else {
match util::imageToPdf(document_path.clone()) {
Ok(pdf_path) => {
// Print the converted PDF using the printer
printer.print(Path::new(&pdf_path), ticket).unwrap();
}
Err(e) => {
println!("Error converting image to PDF: {}", e);
}
}
};
// let theprinter = PdfiumPrinter::new(my_device);
// let theprinter = ImagePrinter::new(my_device);
// theprinter.print(path, ticket).unwrap();
} }
#[cfg_attr(mobile, tauri::mobile_entry_point)] #[cfg_attr(mobile, tauri::mobile_entry_point)]
pub fn run() { pub fn run() {
@ -216,7 +246,8 @@ pub fn run() {
.invoke_handler(tauri::generate_handler![ .invoke_handler(tauri::generate_handler![
get_all_printers, get_all_printers,
print_document, print_document,
get_printer_capabilities get_printer_capabilities,
convert_pdf
]) ])
.run(tauri::generate_context!()) .run(tauri::generate_context!())
.expect("error while running tauri application"); .expect("error while running tauri application");

198
src-tauri/src/raw_convert.rs
Unescape View File

@ -0,0 +1,198 @@
use std::path::Path;
use flate2::write::ZlibEncoder;
use flate2::Compression;
use image::{DynamicImage, GenericImageView};
use std::fs::File;
use std::io::{self, Read, Write};
pub fn imageToPdf2(path: String) -> Result<String, String> {
let image_data = std::fs::read(&path).expect("Failed to read image");
let pdf_data = img2pdf_from_bytes(&image_data, 300.0).expect("Failed to convert image to PDF");
let pdf_path = Path::new(&path).with_extension("pdf");
match std::fs::write(&pdf_path, pdf_data) {
Ok(_) => Ok(pdf_path.display().to_string()),
Err(e) => Err(format!("Failed to write PDF file: {}", e)),
}
}
/// Converts an image from binary data to a PDF as binary data.
///
/// # Arguments
///
/// * `img_data` - A slice of bytes representing the image data.
///
/// # Returns
///
/// A `Result` containing the PDF data as a `Vec<u8>` on success, or an `io::Error` on failure.
pub fn img2pdf_from_bytes(img_data: &[u8], dpi: f64) -> io::Result<Vec<u8>> {
let img = image::load_from_memory(img_data).expect("Failed to open image");
let (width, height) = img.dimensions();
let (page_width, page_height) = (
((width as f64) / dpi * 72.0).round() as u32,
((height as f64) / dpi * 72.0).round() as u32,
);
println!("Image size in pixels: {}x{}", width, height);
println!("Dest Image size in points: {}x{}", page_width, page_height);
let (rgb_img, mask_img) = separate_rgb_and_alpha(img);
let mut encoder = ZlibEncoder::new(Vec::new(), Compression::best());
encoder.write_all(&rgb_img)?;
let rgb_data = encoder.finish()?;
let mut encoder = ZlibEncoder::new(Vec::new(), Compression::best());
encoder.write_all(&mask_img)?;
let mask_data = encoder.finish()?;
let mut pdf_data = Vec::new();
writeln!(pdf_data, "%PDF-1.4")?;
let image_object_id = 2;
let image_object_pos = pdf_data.len();
writeln!(
pdf_data,
"{} 0 obj\n<< /Type /XObject /Subtype /Image /Width {} /Height {} /ColorSpace /DeviceRGB /BitsPerComponent 8 /Filter /FlateDecode /Length {} /SMask {} 0 R >>",
image_object_id,
width,
height,
// page_width,
// page_height,
rgb_data.len(),
image_object_id + 1
)?;
writeln!(pdf_data, "stream")?;
pdf_data.extend(&rgb_data);
writeln!(pdf_data, "endstream\nendobj")?;
let mask_object_id = image_object_id + 1;
let mask_object_pos = pdf_data.len();
writeln!(
pdf_data,
"{} 0 obj\n<< /Type /XObject /Subtype /Image /Width {} /Height {} /ColorSpace /DeviceGray /BitsPerComponent 8 /Filter /FlateDecode /Length {} >>",
mask_object_id,
width,
height,
// page_width,
// page_height,
mask_data.len()
)?;
writeln!(pdf_data, "stream")?;
pdf_data.extend(&mask_data);
writeln!(pdf_data, "endstream\nendobj")?;
let content_stream_object_id = 5;
let content_stream_pos = pdf_data.len();
let content = format!(
"q\n{} 0 0 {} 0 0 cm\n/Im{} Do\nQ",
// width, height, image_object_id
page_width, page_height, image_object_id
);
writeln!(
pdf_data,
"{} 0 obj\n<< /Length {} >>",
content_stream_object_id,
content.len()
)?;
writeln!(pdf_data, "stream\n{}\nendstream\nendobj", content)?;
let page_object_id = 4;
let page_object_pos = pdf_data.len();
writeln!(
pdf_data,
"{} 0 obj\n<< /Type /Page /Parent 1 0 R /MediaBox [0 0 {} {}] /Contents {} 0 R /Resources << /XObject << /Im{} {} 0 R >> >> >>",
page_object_id,
// width, height,
page_width, page_height,
content_stream_object_id, image_object_id, image_object_id
)?;
writeln!(pdf_data, "endobj")?;
let pages_object_pos = pdf_data.len();
writeln!(
pdf_data,
"1 0 obj\n<< /Type /Pages /Kids [ {} 0 R ] /Count 1 >>",
page_object_id
)?;
writeln!(pdf_data, "endobj")?;
let catalog_object_pos = pdf_data.len();
writeln!(pdf_data, "6 0 obj\n<< /Type /Catalog /Pages 1 0 R >>")?;
writeln!(pdf_data, "endobj")?;
let xref_start = pdf_data.len();
writeln!(pdf_data, "xref")?;
writeln!(pdf_data, "0 7")?;
writeln!(pdf_data, "0000000000 65535 f ")?;
writeln!(pdf_data, "{:010} 00000 n ", pages_object_pos)?;
writeln!(pdf_data, "{:010} 00000 n ", image_object_pos)?;
writeln!(pdf_data, "{:010} 00000 n ", mask_object_pos)?;
writeln!(pdf_data, "{:010} 00000 n ", page_object_pos)?;
writeln!(pdf_data, "{:010} 00000 n ", content_stream_pos)?;
writeln!(pdf_data, "{:010} 00000 n ", catalog_object_pos)?;
writeln!(pdf_data, "trailer\n<< /Size 7 /Root 6 0 R >>")?;
writeln!(pdf_data, "startxref\n{}", xref_start)?;
writeln!(pdf_data, "%%EOF")?;
Ok(pdf_data)
}
/// Separates the RGB and alpha channels of an image.
///
/// # Arguments
///
/// * `img` - The `DynamicImage` to be processed.
///
/// # Returns
///
/// A tuple containing the RGB data and the alpha channel data.
fn separate_rgb_and_alpha(img: DynamicImage) -> (Vec<u8>, Vec<u8>) {
let rgba = img.to_rgba8();
let mut rgb = Vec::with_capacity(rgba.len() / 4 * 3);
let mut alpha = Vec::with_capacity(rgba.len() / 4);
for pixel in rgba.pixels() {
rgb.push(pixel[0]);
rgb.push(pixel[1]);
rgb.push(pixel[2]);
alpha.push(pixel[3]);
}
(rgb, alpha)
}
/// Converts an image from a file to a PDF file.
///
/// # Arguments
///
/// * `input_path` - The path to the input image file.
/// * `output_path` - The path to the output PDF file.
///
/// # Returns
///
/// An `io::Result` indicating success or failure.
pub fn img2pdf_from_file<P: AsRef<Path>>(input_path: P, output_path: P, dpi: f64) -> io::Result<()> {
let mut input_file = File::open(input_path)?;
let mut img_data = Vec::new();
input_file.read_to_end(&mut img_data)?;
let pdf_data = img2pdf_from_bytes(&img_data, dpi)?;
let mut output_file = File::create(output_path)?;
output_file.write_all(&pdf_data)?;
Ok(())
}

39
src-tauri/src/util.rs
Unescape View File

@ -2,27 +2,28 @@ use printpdf::*;
use std::path::Path; use std::path::Path;
pub fn imageToPdf(path: String) -> Result<String, String> { pub fn imageToPdf(path: String) -> Result<String, String> {
let mut doc = PdfDocument::new("image_to_pdf"); let mut doc = PdfDocument::new("image_to_pdf");
let image_bytes = std::fs::read(&path).map_err(|e| e.to_string())?; let image_bytes = std::fs::read(&path).map_err(|e| e.to_string())?;
let image = RawImage::decode_from_bytes(&image_bytes, &mut Vec::new()).unwrap(); let image = RawImage::decode_from_bytes(&image_bytes, &mut Vec::new()).unwrap();
let mut ops = Vec::new(); let mut ops = Vec::new();
// In the PDF, an image is an `XObject`, identified by a unique `ImageId` // In the PDF, an image is an `XObject`, identified by a unique `ImageId`
let image_xobject_id = doc.add_image(&image); let image_xobject_id = doc.add_image(&image);
// Calculate image size in points (1 point = 1/72 inch) // Calculate image size in points (1 point = 1/72 inch)
// let dpi = 300.0; let dpi = 300.0;
// let output_width= 105.0; // A6 width in mm let output_width= 105.0; // A6 width in mm
// let output_height = 148.0; // A6 height in mm let output_height = 148.0; // A6 height in mm
// let mm_to_pt = 1.0 / 25.4; // Conversion factor let mm_to_pt = dpi / 25.4; // Conversion factor
// let width_pt = output_width * mm_to_pt * dpi / image.width as f64; let width_pt = output_width * mm_to_pt;
// let height_pt = output_height * mm_to_pt * dpi / image.height as f64; let height_pt = output_height * mm_to_pt;
// println!("Image size in points: {}x{}", width_pt, height_pt); println!("Image size in pixels: {}x{}", image.width, image.height);
println!("Dest Image size in points: {}x{}", width_pt, height_pt);
// Place the image at (0,0) with the calculated size // Place the image at (0,0) with the calculated size
ops.push(Op::UseXobject { ops.push(Op::UseXobject {
@ -30,17 +31,28 @@ pub fn imageToPdf(path: String) -> Result<String, String> {
transform: XObjectTransform { transform: XObjectTransform {
translate_x: Some(Pt(0.0)), translate_x: Some(Pt(0.0)),
translate_y: Some(Pt(0.0)), translate_y: Some(Pt(0.0)),
scale_x: Some(1.0), dpi: Some(dpi),
scale_y: Some(1.0),
dpi: Some(300.0),
..Default::default() ..Default::default()
}, },
}); });
let page1 = PdfPage::new(Mm(105.0), Mm(148.0), ops); let save_options= PdfSaveOptions {
optimize: false,
image_optimization: Some(ImageOptimizationOptions {
quality: Some(1.0),
auto_optimize: Some(false),
format: Some(ImageCompression::None),
..ImageOptimizationOptions::default()
}),
..Default::default()
};
let page1 = PdfPage::new(Mm(output_width), Mm(output_height), ops);
let pdf_bytes: Vec<u8> = doc let pdf_bytes: Vec<u8> = doc
.with_pages(vec![page1]) .with_pages(vec![page1])
.save(&PdfSaveOptions::default(), &mut Vec::new()); .save(&save_options, &mut Vec::new());
let pdf_path = Path::new(&path).with_extension("pdf"); let pdf_path = Path::new(&path).with_extension("pdf");
@ -55,3 +67,4 @@ pub fn imageToPdf(path: String) -> Result<String, String> {
Err(e) => Err(format!("Failed to write PDF: {}", e)), Err(e) => Err(format!("Failed to write PDF: {}", e)),
} }
} }

4
src-tauri/tauri.conf.json
Unescape View File

@ -13,8 +13,8 @@
"windows": [ "windows": [
{ {
"title": "printer", "title": "printer",
"width": 350, "width": 400,
"height": 480 "height": 560
} }
], ],
"security": { "security": {

20
src/App.jsx
Unescape View File

@ -42,6 +42,22 @@ function App() {
console.error("Error fetching printers:", error); console.error("Error fetching printers:", error);
}); });
} }
function convertPdf() {
const file = selectedFile;
if (!file) {
console.error("No document selected for conversion.");
return;
}
invoke("convert_pdf", { documentPath: file })
.then((convertedFilePath) => {
console.log("Converted file path:", convertedFilePath);
document.getElementById("pdf_path_label").textContent = convertedFilePath;
})
.catch((error) => {
console.error("Error converting PDF:", error);
});
}
function printDocument() { function printDocument() {
@ -143,6 +159,10 @@ function App() {
<label id="document_path_label" className="flex-1 break-all">{selectedFile ? `${selectedFile}` : "Select a document to print:"}</label> <label id="document_path_label" className="flex-1 break-all">{selectedFile ? `${selectedFile}` : "Select a document to print:"}</label>
<button onClick={openFile}>open</button> <button onClick={openFile}>open</button>
</div> </div>
<button onClick={convertPdf}>convert PDF</button>
<label id="pdf_path_label" className="flex-1"></label>
<button onClick={printDocument}>print</button> <button onClick={printDocument}>print</button>
</main> </main>
); );

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