Allow to set transform for run method

examples/text.rs

@@ -8,7 +8,7 @@ fn main() {
 
     for (page_nr, page) in file.pages().enumerate() {
         let page = page.expect("can't read page");
-        let flow = pdf_text::run(&file, &page, &resolver).expect("can't render page");
+        let flow = pdf_text::run(&file, &page, &resolver, Default::default()).expect("can't render page");
         println!("# page {}", page_nr + 1);
         for run in flow.runs {
             for line in run.lines {

src/lib.rs

@@ -1,6 +1,7 @@
 use std::collections::HashSet;
 
 use entry::Flow;
+use pathfinder_geometry::transform2d::Transform2F;
 use pdf::{backend::Backend, object::{Page, Resolve}, PdfError};
 use pdf_render::{tracer::{TraceCache, Tracer, DrawItem}, Fill, render_pattern, render_page, FillMode, font::OutlineBuilder};
 
@@ -9,17 +10,17 @@ mod util;
 mod text;
 pub mod entry;
 
-pub fn run<B: Backend>(file: &pdf::file::CachedFile<B>, page: &Page, resolve: &impl Resolve) -> Result<Flow, PdfError> {
+pub fn run<B: Backend>(file: &pdf::file::CachedFile<B>, page: &Page, resolve: &impl Resolve, transform: Transform2F) -> Result<Flow, PdfError> {
     let mut cache = TraceCache::new(OutlineBuilder::default());
 
     let mut clip_paths = vec![];
     let mut tracer = Tracer::new(&mut cache, &mut clip_paths);
 
-    render_page(&mut tracer, resolve, &page, Default::default())?;
+    render_page(&mut tracer, resolve, &page, transform)?;
 
     let bbox = tracer.view_box();
 
-    let items = tracer.finish();
+    let items: Vec<DrawItem<OutlineBuilder>> = tracer.finish();
     let mut patterns = HashSet::new();
     for item in items.iter() {
         if let DrawItem::Vector(ref v) = item {
@@ -80,8 +81,9 @@ pub fn run<B: Backend>(file: &pdf::file::CachedFile<B>, page: &Page, resolve: &i
     for item in items {
         visit_item(item);
     }
-
+    
     let root = tree::build(&spans, bbox, &lines);
+    // dbg!(&root);
     let mut flow = Flow::new();
     tree::items(&mut flow, &spans, &root, bbox.min_x());
     Ok(flow)