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Make PDF render feature flag to disable
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| use crate::errors::AppError; | ||
| use crate::file_converters::pdf::{PdfInfo, PdfPageInfo, PdfToImage}; | ||
| use crate::AppResult; | ||
| use bytes::Bytes; | ||
| use pdfium_render::prelude::*; | ||
|
|
||
| pub struct PdfImageConverter { | ||
| pdfium: Pdfium, | ||
| } | ||
|
|
||
| impl PdfImageConverter { | ||
| pub fn new() -> AppResult<Self> { | ||
| let executable = std::env::current_exe()?; | ||
| let current_dir = executable | ||
| .parent() | ||
| .ok_or(AppError::SystemError { | ||
| message: "No parent directory for executable".to_string(), | ||
| })? | ||
| .to_path_buf(); | ||
|
|
||
| let bindings = Pdfium::bind_to_library( | ||
| // Attempt to bind to a pdfium library in the current working directory... | ||
| Pdfium::pdfium_platform_library_name_at_path("./"), | ||
| ) | ||
| .or_else(|_| Pdfium::bind_to_library(Pdfium::pdfium_platform_library_name_at_path("./lib"))) | ||
| .or_else(|_| { | ||
| Pdfium::bind_to_library(Pdfium::pdfium_platform_library_name_at_path( | ||
| ¤t_dir | ||
| .parent() | ||
| .map(|p| p.join("lib")) | ||
| .unwrap_or(current_dir.clone()), | ||
| )) | ||
| }) | ||
| .or_else(|_| { | ||
| Pdfium::bind_to_library(Pdfium::pdfium_platform_library_name_at_path(¤t_dir)) | ||
| }) | ||
| .or_else(|_| Pdfium::bind_to_system_library())?; | ||
|
|
||
| let pdfium = Pdfium::new(bindings); | ||
| Ok(Self { pdfium }) | ||
| } | ||
| } | ||
|
|
||
| impl PdfToImage for PdfImageConverter { | ||
| fn convert_to_images(&self, pdf_bytes: Bytes) -> AppResult<PdfInfo> { | ||
| let render_config = PdfRenderConfig::new() | ||
| .set_target_width(2000) | ||
| .set_maximum_height(2000) | ||
| .rotate_if_landscape(PdfPageRenderRotation::Degrees90, true); | ||
| let document = self | ||
| .pdfium | ||
| .load_pdf_from_byte_vec(pdf_bytes.to_vec(), None)?; | ||
| let mut pdf_info = PdfInfo { pages: Vec::new() }; | ||
| for page in document.pages().iter() { | ||
| let image = page.render_with_config(&render_config)?.as_image(); | ||
| let page_info = PdfPageInfo { | ||
| height: page.height(), | ||
| width: page.width(), | ||
| page_as_images: image, | ||
| }; | ||
| pdf_info.pages.push(page_info); | ||
| } | ||
| Ok(pdf_info) | ||
| } | ||
|
|
||
| fn images_to_pdf(&self, pdf_info: PdfInfo) -> AppResult<Bytes> { | ||
| let mut document = self.pdfium.create_new_pdf()?; | ||
| for src_page in pdf_info.pages { | ||
| let mut page = | ||
| document | ||
| .pages_mut() | ||
| .create_page_at_start(PdfPagePaperSize::from_points( | ||
| src_page.width, | ||
| src_page.height, | ||
| ))?; | ||
| let object = PdfPageImageObject::new_with_size( | ||
| &document, | ||
| &src_page.page_as_images, | ||
| src_page.width, | ||
| src_page.height, | ||
| )?; | ||
| page.objects_mut().add_image_object(object)?; | ||
| } | ||
| Ok(document.save_to_bytes()?.into()) | ||
| } | ||
| } |