add(ViewPort): wrapper for vaxis.widgets.ScrollView

src/main.zig

@@ -61,6 +61,9 @@ pub fn main() !void {
     var header = try widget.Header.init(alloc, &vx.unicode);
     defer header.deinit();
 
+    var view_port = widget.ViewPort.init(alloc, &vx.unicode);
+    defer view_port.deinit();
+
     // Sends queries to terminal to detect certain features. This should always
     // be called after entering the alt screen, if you are using the alt screen
     try vx.queryTerminal(tty.anyWriter(), 1 * std.time.ns_per_s);
@@ -69,6 +72,7 @@ pub fn main() !void {
         const event = loop.nextEvent();
         // update widgets
         header.update(event);
+        view_port.update(event);
 
         switch (event) {
             .key_press => |key| {
@@ -81,9 +85,15 @@ pub fn main() !void {
                 } else if (key.matches('l', .{ .ctrl = true })) {
                     vx.queueRefresh();
                 } else if (key.matches(vaxis.Key.enter, .{})) {
-                    const title = alloc.alloc(u8, text_input.buf.buffer.len) catch @panic("OOM");
-                    @memcpy(title, text_input.buf.buffer);
-                    if (loop.tryPostEvent(.{ .title = title })) {
+                    var len: usize = 0;
+                    for (text_input.buf.buffer) |c| {
+                        if (c == 0xaa or c == 0)
+                            break;
+                        len += 1;
+                    }
+                    const path = alloc.alloc(u8, len) catch @panic("OOM");
+                    @memcpy(path, text_input.buf.buffer[0..len]);
+                    if (loop.tryPostEvent(.{ .path = path })) {
                         text_input.clearAndFree();
                     }
                 } else {
@@ -91,8 +101,8 @@ pub fn main() !void {
                 }
             },
             .winsize => |ws| try vx.resize(alloc, tty.anyWriter(), ws),
-            .title => |*title| {
-                alloc.free(title.*);
+            .path => |*path| {
+                alloc.free(path.*);
             },
         }
 
@@ -108,25 +118,25 @@ pub fn main() !void {
             .border = .{ .where = .all },
         }));
 
-        // Create a style
-        const style: vaxis.Style = .{
-            .fg = .{ .index = color_idx },
-        };
-
-        // Create a bordered child window
-        const child = root_window.child(.{
-            .x_off = root_window.width / 2 - 20,
-            .y_off = root_window.height / 2 - 3,
+        text_input.draw(root_window.child(.{
+            .x_off = 20,
+            .y_off = 3,
             .width = .{ .limit = 40 },
             .height = .{ .limit = 3 },
             .border = .{
                 .where = .all,
-                .style = style,
+                .style = .{ .fg = .{ .index = color_idx } },
             },
-        });
+        }));
 
-        // Draw the text_input in the child window
-        text_input.draw(child);
+        view_port.draw(root_window.child(.{
+            .x_off = root_window.width / 4,
+            .y_off = 3,
+            .width = .{ .limit = root_window.width / 2 },
+            .border = .{
+                .where = .{ .other = .{ .right = true, .left = true } },
+            },
+        }));
 
         // Render the screen. Using a buffered writer will offer much better
         // performance, but is not required