Prevent zoomout in both dimensions using double-pass system

Cargo.toml

@@ -22,16 +22,21 @@ path = "src/main.rs"
 name = "tdf"
 
 [dependencies]
-ratatui = { version = "^0.30.1", default-features = false, features = [ "crossterm", "layout-cache" ] }
-ratatui-image = { version = "11.0", default-features = false }
+# we're using this branch because it has significant performance fixes that I'm waiting on responses from the upstream devs to get upstreamed. See https://github.com/ratatui-org/ratatui/issues/1116
+ratatui = { git = "https://github.com/itsjunetime/ratatui.git", rev = "720ac2d0cad1ac6424364fea74856fec9c100cb1", default-features = false, features = [ "crossterm", "layout-cache" ] }
+# ratatui = { path = "./ratatui/ratatui/" }
+# We're using this to have the vb64 feature (for faster base64 encoding, since that does take up a good bit of time when converting images to the `Protocol`. It also just includes a few more features that I'm waiting on main to upstream
+ratatui-image = { git = "https://github.com/itsjunetime/ratatui-image.git", rev = "a276a87cb8e2976442c6cc59db831db81551da89", default-features = false }
+# ratatui-image = { path = "./ratatui-image", default-features = false }
 crossterm = { version = "0.29.0", features = ["event-stream"] }
+# crossterm = { path = "../crossterm", features = ["event-stream"] }
 image = { version = "0.25.1", features = ["pnm", "rayon", "png"], default-features = false }
 notify = { version = "8.0.0", features = ["crossbeam-channel"] }
 tokio = { version = "1.37.0", features = ["rt-multi-thread", "macros"] }
 futures-util = { version = "0.3.30", default-features = false }
 flume = { version = "0.12.0", default-features = false, features = ["async"] }
 xflags = "0.4.0-pre.2"
-mimalloc = { version = "0.1.43", features = [ "debug_in_debug" ] }
+mimalloc = "0.1.43"
 nix = { version = "0.31.0", features = ["signal"] }
 mupdf = { git = "https://github.com/messense/mupdf-rs.git", rev = "d7441b9998c92135e329559c0aa71d9dc92cf4de", default-features = false, features = ["svg", "system-fonts", "img"] }
 rayon = { version = "1", default-features = false }
@@ -49,6 +54,9 @@ flexi_logger = "0.31"
 # for tracing with tokio-console
 console-subscriber = { version = "0.5.0", optional = true }
 
+[patch.crates-io]
+pathfinder_simd = { git = "https://github.com/itsjunetime/pathfinder.git", rev = "814671e162a1829e074521446317b915311d3d4d" }
+
 [profile.production]
 inherits = "release"
 lto = "fat"

benches/utils.rs

@@ -4,10 +4,7 @@ use crossterm::terminal::WindowSize;
 use flume::{Sender, r#async::RecvStream, unbounded};
 use futures_util::stream::StreamExt as _;
 use ratatui::layout::Rect;
-use ratatui_image::{
-	FontSize,
-	picker::{Picker, ProtocolType}
-};
+use ratatui_image::picker::{Picker, ProtocolType};
 use tdf::{
 	converter::{ConvertedPage, ConverterMsg, run_conversion_loop},
 	renderer::{RenderError, RenderInfo, RenderNotif, fill_default, start_rendering}
@@ -57,10 +54,7 @@ pub struct RenderState {
 	pub to_render_tx: Sender<RenderNotif>
 }
 
-const FONT_SIZE: FontSize = FontSize {
-	width: 8,
-	height: 14
-};
+const FONT_SIZE: (u16, u16) = (8, 14);
 
 pub fn start_rendering_loop(
 	path: impl AsRef<Path>,
@@ -80,8 +74,8 @@ pub fn start_rendering_loop(
 	let size = WindowSize {
 		columns,
 		rows,
-		height: rows * FONT_SIZE.height,
-		width: columns * FONT_SIZE.width
+		height: rows * FONT_SIZE.1,
+		width: columns * FONT_SIZE.0
 	};
 
 	let main_area = Rect {

src/converter.rs

@@ -8,7 +8,7 @@ use flume::{Receiver, SendError, Sender, TryRecvError};
 use futures_util::stream::StreamExt as _;
 use image::{DynamicImage, codecs::pnm::PnmDecoder};
 use kittage::NumberOrId;
-use ratatui::prelude::Size;
+use ratatui::layout::Rect;
 use ratatui_image::{
 	Resize,
 	picker::{Picker, ProtocolType},
@@ -27,7 +27,7 @@ pub enum MaybeTransferred {
 	Transferred(kittage::ImageId)
 }
 
-// #[derive(Debug)]
+#[derive(Debug)]
 pub enum ConvertedImage {
 	Generic(Protocol),
 	Kitty {
@@ -42,8 +42,8 @@ impl ConvertedImage {
 	pub fn w_h(&self) -> (u16, u16) {
 		match self {
 			Self::Generic(prot) => {
-				let Size { width, height } = prot.size();
-				(width, height)
+				let a = prot.area();
+				(a.width, a.height)
 			}
 			Self::Kitty {
 				img: _,
@@ -72,7 +72,7 @@ pub async fn run_conversion_loop(
 	picker: Picker,
 	prerender: usize,
 	shms_work: bool
-) -> Result<(), Box<SendError<Result<ConvertedPage, RenderError>>>> {
+) -> Result<(), SendError<Result<ConvertedPage, RenderError>>> {
 	let mut images = vec![];
 	let mut page: usize = 0;
 	let pid = std::process::id();
@@ -134,9 +134,11 @@ pub async fn run_conversion_loop(
 				.for_each(|(_, _, px)| px.0[2] = px.0[2].saturating_sub(u8::MAX / 2));
 		}
 
-		let img_size = Size {
+		let img_area = Rect {
 			width: page_info.img_data.cell_w,
-			height: page_info.img_data.cell_h
+			height: page_info.img_data.cell_h,
+			x: 0,
+			y: 0
 		};
 
 		let dyn_img = DynamicImage::ImageRgb8(dyn_img);
@@ -172,7 +174,7 @@ pub async fn run_conversion_loop(
 			}
 			_ => ConvertedImage::Generic(
 				picker
-					.new_protocol(dyn_img, img_size, Resize::Crop(None))
+					.new_protocol(dyn_img, img_area, Resize::None)
 					.map_err(|e| {
 						RenderError::Converting(format!(
 							"Couldn't convert DynamicImage to ratatui image: {e}"

src/main.rs

@@ -260,7 +260,7 @@ async fn inner_main() -> Result<(), WrappedErr> {
 				// the 'equivalent' that is suggested instead is not the same. We need to keep
 				// calling this.
 				#[expect(deprecated)]
-				Ok(Picker::from_fontsize(FontSize { width: cell_width_px, height: cell_height_px }))
+				Ok(Picker::from_fontsize((cell_width_px, cell_height_px)))
 			},
 			ratatui_image::errors::Errors::NoFontSize => Err(WrappedErr(
 				"Unable to detect your terminal's font size; this is an issue with your terminal emulator.\nPlease use a different terminal emulator or report this bug to tdf.".into()
@@ -315,7 +315,7 @@ async fn inner_main() -> Result<(), WrappedErr> {
 	let mut term = Terminal::new(backend).map_err(|e| {
 		WrappedErr(format!("Couldn't set up crossterm's terminal backend: {e}").into())
 	})?;
-	// term.skip_diff(true);
+	term.skip_diff(true);
 
 	enable_raw_mode().map_err(|e| {
 		WrappedErr(

src/skip.rs

@@ -1,14 +1,23 @@
 use std::num::NonZeroUsize;
 
-use ratatui::{prelude::buffer::CellDiffOption, widgets::Widget};
+use ratatui::widgets::Widget;
 
-pub struct Skip;
+pub struct Skip {
+	skip: bool
+}
+
+impl Skip {
+	#[must_use]
+	pub fn new(skip: bool) -> Self {
+		Self { skip }
+	}
+}
 
 impl Widget for Skip {
 	fn render(self, area: ratatui::prelude::Rect, buf: &mut ratatui::prelude::Buffer) {
 		for x in area.x..(area.x + area.width) {
 			for y in area.y..(area.y + area.height) {
-				buf[(x, y)].diff_option = CellDiffOption::Skip;
+				buf[(x, y)].skip = self.skip;
 			}
 		}
 	}

src/tui.rs

@@ -349,8 +349,8 @@ impl Tui {
 			}
 		}
 
-		let width = (img_section_w * f32::from(font_size.width)) as u32;
-		let height = (img_section_h * f32::from(font_size.height)) as u32;
+		let width = (img_section_w * f32::from(font_size.0)) as u32;
+		let height = (img_section_h * f32::from(font_size.1)) as u32;
 
 		zoom.cell_pan_from_left = zoom
 			.cell_pan_from_left
@@ -367,8 +367,8 @@ impl Tui {
 				y: img_area.y
 			},
 			display_loc: DisplayLocation {
-				x: u32::from(zoom.cell_pan_from_left) * u32::from(font_size.width),
-				y: u32::from(zoom.cell_pan_from_top) * u32::from(font_size.height),
+				x: u32::from(zoom.cell_pan_from_left) * u32::from(font_size.0),
+				y: u32::from(zoom.cell_pan_from_top) * u32::from(font_size.1),
 				width,
 				height,
 				columns: img_area.width,
@@ -409,7 +409,7 @@ impl Tui {
 			// resize this time), then go through every element in the buffer where any Image would
 			// be written and set to skip it so that ratatui doesn't spend a lot of time diffing it
 			// each re-render
-			frame.render_widget(Skip, img_area);
+			frame.render_widget(Skip::new(true), img_area);
 			return KittyDisplay::NoChange;
 		}