Move the frame into draw.zig and the transitions out of layout.zig

Pure moves, no behaviour change. draw.zig holds the whole core frame in
order: render, the pane, tag, header and notice painters it calls, and the
character-effect composition (Pardes.render stays a declaration alias).
Presentation.zig is the panel presentation state as a file struct, and
animation.zig the easing curves, transition kinds, tracks and boxes, the
character effects' sources and the generic displayed-value transition, all
of which lived in layout.zig. layout.zig keeps only layout.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/Messages.zig b/src/Messages.zig
index 72b3b63c..97a2f939 100644
--- a/src/Messages.zig
+++ b/src/Messages.zig
@@ -5,6 +5,7 @@ const pardes = @import("pardes.zig");
 const memory = @import("memory.zig");
 const std = @import("std");
 const layout = @import("layout.zig");
+const animation = @import("animation.zig");
 const ctlfs = @import("ninep/tree.zig");
 const panes = @import("panes.zig");
 const CellStyle = @import("surface.zig").CellStyle;
@@ -285,7 +286,7 @@ pub const MessageMotion = struct { alpha: f32 = 1, slide: f32 = 0 };
 
 /// Animation frames a message timing lasts; at least one.
 pub fn messageFrames(ms: u16) u16 {
-    return @intCast(@max(1, (@as(u32, ms) + layout.Animation.frame_ms - 1) / layout.Animation.frame_ms));
+    return @intCast(@max(1, (@as(u32, ms) + animation.Animation.frame_ms - 1) / animation.Animation.frame_ms));
 }
 
 pub fn messageMotion(p: *const Pardes, life: Pane.MessageLife) MessageMotion {