feat(terminal): sixel support (#1557)

* work

* work

* work

* work

* work

* more work

* work

* work

* work

* hack around stdin repeater

* refactor(sixel): rename sixel structs

* feat(sixel): render text above images

* fix(sixel): reap images once they're past the end of the scrollbuffer

* fix(sixel): display images in the middle of the line

* fix(sixel): render crash

* fix(sixel): react to SIGWINCH

* fix(sixel): behave properly in alternate screen mode

* fix(sixel): reap images on terminal reset

* feat(sixel): handle DECSDM

* fix(terminal): properly respond to XTSMGRAPHICS and device attributes with Sixel

* Add comment

* fix(sixel): hack for unknown event overflow until we fix the api

* feat(input): query terminal for all OSC 4 colors and respond to them in a buggy way

* fix(sixel): do not render corrupted image

* feat(input): improve STDIN queries

* fix(client): mistake in clear terminal attributes string

* fix(ansi): report correct number of supported color registers

* fix(sixel): reap images that are completely covered

* style(comment): fix name

* test(sixel): infra

* test(sixel): cases and fixes

* fix(sixel): forward dcs bytes to sixel parser

* refactor(client): ansi stdin parser

* refactor(output): cleanup

* some refactorings

* fix test

* refactor(grid): sixel-grid / sixel-image-store

* refactor(grid): grid debug method

* refactor(grid): move various logic to sixel.rs

* refactor(grid): remove unused methods

* fix(sixel): work with multiple users

* refactor(pane): remove unused z_index

* style(fmt): prepend unused variable

* style(fmt): rustfmt

* fix(tests): various apis

* chore(dependencies): use published version of sixel crates

* style(fmt): rustfmt

* style(fmt): rustfmt

* style(lint): make clippy happy

* style(lint): make clippy happy... again

* style(lint): make clippy happy... again (chapter 2)

* style(comment): remove unused

* fix(colors): export COLORTERM and respond to XTVERSION

* fix(test): color register count

* fix(stdin): adjust STDIN sleep times

1 files changed, 15 insertions, 2 deletions

diff --git a/zellij-server/src/ui/pane_contents_and_ui.rs b/zellij-server/src/ui/pane_contents_and_ui.rs
index 50f763167..b0eae8e82 100644
--- a/zellij-server/src/ui/pane_contents_and_ui.rs
+++ b/zellij-server/src/ui/pane_contents_and_ui.rs
@@ -44,13 +44,19 @@ impl<'a> PaneContentsAndUi<'a> {
         &mut self,
         clients: impl Iterator<Item = ClientId>,
     ) {
-        if let Some((character_chunks, raw_vte_output)) = self.pane.render(None) {
+        if let Some((character_chunks, raw_vte_output, sixel_image_chunks)) = self.pane.render(None)
+        {
             let clients: Vec<ClientId> = clients.collect();
             self.output.add_character_chunks_to_multiple_clients(
                 character_chunks,
                 clients.iter().copied(),
                 self.z_index,
             );
+            self.output.add_sixel_image_chunks_to_multiple_clients(
+                sixel_image_chunks,
+                clients.iter().copied(),
+                self.z_index,
+            );
             if let Some(raw_vte_output) = raw_vte_output {
                 self.output.add_post_vte_instruction_to_multiple_clients(
                     clients.iter().copied(),
@@ -65,9 +71,16 @@ impl<'a> PaneContentsAndUi<'a> {
         }
     }
     pub fn render_pane_contents_for_client(&mut self, client_id: ClientId) {
-        if let Some((character_chunks, raw_vte_output)) = self.pane.render(Some(client_id)) {
+        if let Some((character_chunks, raw_vte_output, sixel_image_chunks)) =
+            self.pane.render(Some(client_id))
+        {
             self.output
                 .add_character_chunks_to_client(client_id, character_chunks, self.z_index);
+            self.output.add_sixel_image_chunks_to_client(
+                client_id,
+                sixel_image_chunks,
+                self.z_index,
+            );
             if let Some(raw_vte_output) = raw_vte_output {
                 self.output.add_post_vte_instruction_to_client(
                     client_id,