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Managed to render to png, still only proof of concept

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This commit is contained in:
Julian Mutter
2023-11-22 19:35:16 +01:00
parent 1db3c212ba
commit b98ca6c9f6
4 changed files with 97 additions and 34 deletions
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15
src/cache.rs
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@ -1,3 +1,5 @@
use cairo::ImageSurface;
use gtk::gdk::Texture;
use poppler::{Document, Page};
use std::{
collections::BTreeMap,
@ -8,8 +10,10 @@ use std::{
use async_channel::Sender;
use crate::draw;
type PageNumber = usize;
pub type MyPageType = Page;
pub type MyPageType = Texture;
pub struct PageCache {
document: Document,
@ -39,7 +43,10 @@ impl PageCache {
}
if let Some(page) = self.document.page(page_number as i32) {
self.pages.insert(page_number, Rc::new(page));
let pages = vec![Rc::new(page)];
let texture = draw::draw_pages_to_texture(&pages, 500, 500);
self.pages.insert(page_number, Rc::new(texture));
if self.pages.len() > self.max_num_stored_pages && self.pages.len() > 2 {
let _result = self.remove_most_distant_page(page_number);
@ -76,7 +83,9 @@ impl PageCache {
}
CacheCommand::GetCurrentTwoPages { page_left_number } => {
if let Some(page_left) = self.get_page(page_left_number) {
println!("got left page");
if let Some(page_right) = self.get_page(page_left_number + 1) {
println!("got right page");
Some(CacheResponse::TwoPagesRetrieved {
page_left,
page_right,
@ -85,6 +94,7 @@ impl PageCache {
Some(CacheResponse::SinglePageRetrieved { page: page_left })
}
} else {
println!("did not get any page");
// TODO: if page left was not empty, this could be because page turning was too quick.
// In this case, just not rendering the current page is okay, but when no more render requests are available, one would want to wait for the caching
None
@ -140,6 +150,7 @@ where
// response_sender.send_blocking(response).unwrap();
println!("Command processed, activating receiver....");
receiver(response);
println!("receiver done");
}
}
});