Follow embedded PDF links through Look

1 files changed, 27 insertions, 2 deletions

diff --git a/src/panes.zig b/src/panes.zig
index ea733ea1..a66d8e21 100644
--- a/src/panes.zig
+++ b/src/panes.zig
@@ -2129,6 +2129,7 @@ pub const Output = struct {
         query: lsp.Kind,
         search,
         errors,
+        pdf_links,
     };
 
     pub const max_arg = dump.max_origin_arg;
@@ -2237,6 +2238,7 @@ pub const Output = struct {
             // rows are `location text`, so n/N walk them
             .search => .{ .name = config.search_buffer, .steps = true },
             .errors => .{ .name = config.errors_buffer, .doc = true },
+            .pdf_links => .{ .name = config.pdf_links_buffer, .steps = true },
             .cmd => |b| builtins.registry.outputTraits(b) orelse unreachable,
             .query => |k| switch (k) {
                 .hover => .{ .name = config.hover_buffer },
@@ -2285,6 +2287,7 @@ pub const Output = struct {
             .query => |k| @tagName(k),
             .search => "/",
             .errors => config.errors_buffer,
+            .pdf_links => config.pdf_links_buffer,
         };
     }
 
@@ -2292,6 +2295,7 @@ pub const Output = struct {
         if (w.len == 0) return null;
         if (std.mem.eql(u8, w, "/")) return .search;
         if (std.mem.eql(u8, w, config.errors_buffer)) return .errors;
+        if (std.mem.eql(u8, w, config.pdf_links_buffer)) return .pdf_links;
         if (std.meta.stringToEnum(Builtin, w)) |b|
             if (builtins.registry.outputTraits(b) != null) return .{ .cmd = b };
         if (std.meta.stringToEnum(lsp.Kind, w)) |k| return .{ .query = k };
@@ -2354,7 +2358,7 @@ pub const Output = struct {
                 => {},
                 else => return anchor,
             },
-            .errors => return anchor,
+            .errors, .pdf_links => return anchor,
         }
         if (content.len == 0) return anchor;
         const path_only = std.meta.eql(from, Origin{ .cmd = .Find });
@@ -2477,6 +2481,7 @@ pub const Output = struct {
             }
         }
         const format_locations = traits(from).steps and !traits(from).commands and
+            from != .pdf_links and
             !std.meta.eql(from, Origin{ .cmd = .Find }) and
             !std.meta.eql(from, Origin{ .query = .completion });
         if (format_locations) {
@@ -4941,8 +4946,10 @@ pub const Pdf = struct {
         page: usize,
         quads: []pdf.Quad,
         text: []u8,
+        link: ?pdf.Link = null,
 
         pub fn deinit(probe: *@This(), gpa: std.mem.Allocator) void {
+            if (probe.link) |*link| link.deinit(gpa);
             gpa.free(probe.quads);
             gpa.free(probe.text);
             probe.* = undefined;
@@ -5427,6 +5434,23 @@ pub const Pdf = struct {
         const page = nativePageAtGridRow(core, pane, row) orelse return null;
         const point = panePointAtPage(core, pane, page, col, row, false) orelse return null;
         const state = &(pane.pdf orelse return null);
+        if (state.document.linkAt(core.pdf_gpa, page, point) catch null) |found| {
+            var link = found;
+            if (core.pdfLinkLocation(pane, link) != null) {
+                const quads = core.pdf_gpa.alloc(pdf.Quad, 1) catch {
+                    link.deinit(core.pdf_gpa);
+                    return null;
+                };
+                const text = state.document.copyRectangle(core.pdf_gpa, page, link.quad) catch {
+                    core.pdf_gpa.free(quads);
+                    link.deinit(core.pdf_gpa);
+                    return null;
+                };
+                quads[0] = link.quad;
+                return .{ .page = page, .quads = quads, .text = text, .link = link };
+            }
+            link.deinit(core.pdf_gpa);
+        }
         return probeWord(&state.document, core.pdf_gpa, page, point) catch null;
     }
 
@@ -5618,11 +5642,12 @@ pub const Pdf = struct {
         else
             &.{};
         const hover_page = if (hover_quads.len > 0) core.pdf_hover_preview.?.probe.page else null;
+        const link_hover = hover_quads.len > 0 and core.pdf_hover_preview.?.probe.link != null;
         const selection_color = core.theme().sel_bg;
         return .{
             .hover_quads = hover_quads,
             .hover_page = hover_page,
-            .hover_color = selection_color,
+            .hover_color = if (link_hover) core.theme().box else selection_color,
             .selection_color = selection_color,
         };
     }