From 269eb7e1546d6cc83c723c237ff81ab781204eb6 Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Wed, 18 Jun 2025 12:49:25 -0700
Subject: [PATCH] add Screen and ScreenOrientation

---
 src/browser/html/html.zig   |   1 +
 src/browser/html/screen.zig | 109 ++++++++++++++++++++++++++++++++++++
 src/browser/html/window.zig |   6 ++
 3 files changed, 116 insertions(+)
 create mode 100644 src/browser/html/screen.zig

diff --git a/src/browser/html/html.zig b/src/browser/html/html.zig
index ef75dde0..33b6b2ad 100644
--- a/src/browser/html/html.zig
+++ b/src/browser/html/html.zig
@@ -38,4 +38,5 @@ pub const Interfaces = .{
     Location,
     MediaQueryList,
     Performance,
+    @import("screen.zig").Interfaces,
 };
diff --git a/src/browser/html/screen.zig b/src/browser/html/screen.zig
new file mode 100644
index 00000000..6d705b6f
--- /dev/null
+++ b/src/browser/html/screen.zig
@@ -0,0 +1,109 @@
+// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+
+const EventTarget = @import("../dom/event_target.zig").EventTarget;
+
+pub const Interfaces = .{
+    Screen,
+    ScreenOrientation,
+};
+
+// https://developer.mozilla.org/en-US/docs/Web/API/Screen
+pub const Screen = struct {
+    pub const prototype = *EventTarget;
+
+    height: u32 = 1080,
+    width: u32 = 1920,
+    // https://developer.mozilla.org/en-US/docs/Web/API/Screen/colorDepth
+    color_depth: u32 = 8,
+    // https://developer.mozilla.org/en-US/docs/Web/API/Screen/pixelDepth
+    pixel_depth: u32 = 8,
+    orientation: ScreenOrientation = .{ .type = .landscape_primary },
+
+    pub fn get_availHeight(self: *const Screen) u32 {
+        return self.height;
+    }
+
+    pub fn get_availWidth(self: *const Screen) u32 {
+        return self.width;
+    }
+
+    pub fn get_height(self: *const Screen) u32 {
+        return self.height;
+    }
+
+    pub fn get_width(self: *const Screen) u32 {
+        return self.width;
+    }
+
+    pub fn get_pixelDepth(self: *const Screen) u32 {
+        return self.pixel_depth;
+    }
+
+    pub fn get_orientation(self: *const Screen) ScreenOrientation {
+        return self.orientation;
+    }
+};
+
+const ScreenOrientationType = enum {
+    portrait_primary,
+    portrait_secondary,
+    landscape_primary,
+    landscape_secondary,
+
+    pub fn toString(self: ScreenOrientationType) []const u8 {
+        return switch (self) {
+            .portrait_primary => "portrait-primary",
+            .portrait_secondary => "portrait-secondary",
+            .landscape_primary => "landscape-primary",
+            .landscape_secondary => "landscape-secondary",
+        };
+    }
+};
+
+pub const ScreenOrientation = struct {
+    pub const prototype = *EventTarget;
+
+    angle: u32 = 0,
+    type: ScreenOrientationType,
+
+    pub fn get_angle(self: *const ScreenOrientation) u32 {
+        return self.angle;
+    }
+
+    pub fn get_type(self: *const ScreenOrientation) []const u8 {
+        return self.type.toString();
+    }
+};
+
+const testing = @import("../../testing.zig");
+test "Browser.HTML.Screen" {
+    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
+    defer runner.deinit();
+
+    try runner.testCases(&.{
+        .{ "let screen = window.screen", "undefined" },
+        .{ "screen.width === 1920", "true" },
+        .{ "screen.height === 1080", "true" },
+        .{ "let orientation = screen.orientation", "undefined" },
+        .{ "orientation.angle === 0", "true" },
+        .{ "orientation.type === \"landscape-primary\"", "true" },
+    }, .{});
+}
diff --git a/src/browser/html/window.zig b/src/browser/html/window.zig
index f18b0cd2..c1fbdef2 100644
--- a/src/browser/html/window.zig
+++ b/src/browser/html/window.zig
@@ -34,6 +34,7 @@ const MediaQueryList = @import("media_query_list.zig").MediaQueryList;
 const Performance = @import("performance.zig").Performance;
 const CSSStyleDeclaration = @import("../cssom/css_style_declaration.zig").CSSStyleDeclaration;
 const CustomElementRegistry = @import("../webcomponents/custom_element_registry.zig").CustomElementRegistry;
+const Screen = @import("screen.zig").Screen;
 
 const storage = @import("../storage/storage.zig");
 
@@ -60,6 +61,7 @@ pub const Window = struct {
     navigator: Navigator = .{},
     performance: Performance,
     custom_elements: CustomElementRegistry = .{},
+    screen: Screen = .{},
 
     pub fn create(target: ?[]const u8, navigator: ?Navigator) !Window {
         var fbs = std.io.fixedBufferStream("");
@@ -169,6 +171,10 @@ pub const Window = struct {
         return &self.custom_elements;
     }
 
+    pub fn get_screen(self: *Window) *Screen {
+        return &self.screen;
+    }
+
     pub fn _requestAnimationFrame(self: *Window, cbk: Function, page: *Page) !u32 {
         return self.createTimeout(cbk, 5, page, .{ .animation_frame = true });
     }