Add a script to jump to a named marker

scripts/jump_to_marker.lua

@@ -0,0 +1,67 @@
+ardour { ["type"] = "EditorAction", name = "Jump to Marker",
+	license     = "MIT",
+	author      = "Ardour Team",
+	description = [[Jump to the first marker matching a given pattern]]
+}
+
+function factory () return function ()
+	local keep = false
+
+	::restart::
+
+	local dlg = LuaDialog.Dialog ("Search and Jump to Marker",
+		{
+			{ type = "entry",    key = "marker", default = '',   title = "Marker Prefix" },
+			{ type = "checkbox", key = "keep",   default = keep, title = "Keep Dialog Open" },
+		})
+
+	local rv = dlg:run()
+	if not rv then return end
+
+	keep = rv['keep']
+
+	if (rv['marker'] == "") then
+		if keep then goto restart end
+		return
+	end
+
+	for l in Session:locations():list():iter() do
+		if l:is_mark() and string.find (l:name(), "^" .. rv['marker'] .. ".*$") then
+			Session:request_locate (l:start())
+			if keep then goto restart end
+			return
+		end
+	end
+
+	LuaDialog.Message ("Jump to Marker", "No marker matching the given pattern was found.", LuaDialog.MessageType.Warning, LuaDialog.ButtonType.Close):run ()
+
+	if keep then goto restart end
+end end
+
+
+function icon (params) return function (ctx, width, height, fg)
+	local mh = height - 3.5;
+	local m3 = width / 3;
+	local m6 = width / 6;
+
+	ctx:set_line_width (.5)
+
+	-- compare to gtk2_ardour/marker.cc "Marker"
+	ctx:set_source_rgba (.6, .6, .6, 1.0)
+	ctx:move_to (width / 2 - m6, 2)
+	ctx:rel_line_to (m3, 0)
+	ctx:rel_line_to (0, mh * 0.4)
+	ctx:rel_line_to (-m6, mh * 0.6)
+	ctx:rel_line_to (-m6, -mh * 0.6)
+	ctx:close_path ()
+	ctx:fill_preserve ()
+	ctx:set_source_rgba (.0, .0, .0, 1.0)
+	ctx:stroke ()
+
+	ctx:set_source_rgba (ARDOUR.LuaAPI.color_to_rgba (fg))
+	local txt = Cairo.PangoLayout (ctx, "ArdourMono ".. math.ceil(math.min (width, height) * .5) .. "px")
+	txt:set_text ("txt")
+	local tw, th = txt:get_pixel_size ()
+	ctx:move_to (.5 * (width - tw), .5 * (height - th))
+	txt:show_in_cairo_context (ctx)
+end end