Add flutter tizen window api

flutter/shell/platform/tizen/BUILD.gn

@@ -7,6 +7,7 @@ import("//flutter/shell/platform/common/client_wrapper/publish.gni")
 _public_headers = [
   "public/flutter_platform_view.h",
   "public/flutter_tizen.h",
+  "public/flutter_tizen_window.h",
 ]
 
 config("flutter_tizen_config") {

flutter/shell/platform/tizen/flutter_tizen.cc

@@ -4,6 +4,7 @@
 // found in the LICENSE file.
 
 #include "public/flutter_tizen.h"
+#include "public/flutter_tizen_window.h"
 
 #include "flutter/shell/platform/common/client_wrapper/include/flutter/plugin_registrar.h"
 #include "flutter/shell/platform/common/client_wrapper/include/flutter/standard_message_codec.h"
@@ -295,3 +296,95 @@ FlutterDesktopMessengerRef FlutterDesktopMessengerLock(
 }
 
 void FlutterDesktopMessengerUnlock(FlutterDesktopMessengerRef messenger) {}
+
+// ========== Window API ==========
+
+// Returns the TizenWindow associated with the given view, or nullptr if the
+// view does not have a TizenWindow.
+static flutter::TizenWindow* TizenWindowFromView(
+    FlutterDesktopViewRef view_ref) {
+  flutter::FlutterTizenView* view = ViewFromHandle(view_ref);
+  if (!view || !view->tizen_view()) {
+    return nullptr;
+  }
+  // The tizen_view() returns a TizenViewBase*. We need to check if it's
+  // actually a TizenWindow by dynamic_cast.
+  return dynamic_cast<flutter::TizenWindow*>(view->tizen_view());
+}
+
+FlutterDesktopWindowGeometry FlutterDesktopWindowGetGeometry(
+    FlutterDesktopViewRef view) {
+  FlutterDesktopWindowGeometry result = {0, 0, 0, 0};
+  flutter::TizenWindow* window = TizenWindowFromView(view);
+  if (!window) {
+    return result;
+  }
+  flutter::TizenGeometry geometry = window->GetGeometry();
+  result.x = geometry.left;
+  result.y = geometry.top;
+  result.width = geometry.width;
+  result.height = geometry.height;
+  return result;
+}
+
+bool FlutterDesktopWindowSetGeometry(
+    FlutterDesktopViewRef view,
+    const FlutterDesktopWindowGeometry* geometry) {
+  if (!geometry) {
+    return false;
+  }
+  flutter::TizenWindow* window = TizenWindowFromView(view);
+  if (!window) {
+    return false;
+  }
+  flutter::TizenGeometry current = window->GetGeometry();
+  flutter::TizenGeometry target = {
+      geometry->x != -1 ? geometry->x : current.left,
+      geometry->y != -1 ? geometry->y : current.top,
+      geometry->width != -1 ? geometry->width : current.width,
+      geometry->height != -1 ? geometry->height : current.height,
+  };
+  return window->SetGeometry(target);
+}
+
+FlutterDesktopScreenGeometry FlutterDesktopWindowGetScreenGeometry(
+    FlutterDesktopViewRef view) {
+  FlutterDesktopScreenGeometry result = {0, 0};
+  flutter::TizenWindow* window = TizenWindowFromView(view);
+  if (!window) {
+    return result;
+  }
+  flutter::TizenGeometry geometry = window->GetScreenGeometry();
+  result.width = geometry.width;
+  result.height = geometry.height;
+  return result;
+}
+
+int32_t FlutterDesktopWindowGetRotation(FlutterDesktopViewRef view) {
+  flutter::TizenWindow* window = TizenWindowFromView(view);
+  if (!window) {
+    return 0;
+  }
+  return window->GetRotation();
+}
+
+void FlutterDesktopWindowActivate(FlutterDesktopViewRef view) {
+  flutter::TizenWindow* window = TizenWindowFromView(view);
+  if (window) {
+    window->ActivateWindow();
+  }
+}
+
+void FlutterDesktopWindowRaise(FlutterDesktopViewRef view) {
+  flutter::TizenWindow* window = TizenWindowFromView(view);
+  if (window) {
+    window->RaiseWindow();
+  }
+}
+
+void FlutterDesktopWindowLower(FlutterDesktopViewRef view) {
+  flutter::TizenWindow* window = TizenWindowFromView(view);
+  if (window) {
+    window->LowerWindow();
+  }
+}

flutter/shell/platform/tizen/public/flutter_tizen_window.h

@@ -0,0 +1,79 @@
+// Copyright 2026 Samsung Electronics Co., Ltd. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FLUTTER_SHELL_PLATFORM_TIZEN_PUBLIC_FLUTTER_TIZEN_WINDOW_H_
+#define FLUTTER_SHELL_PLATFORM_TIZEN_PUBLIC_FLUTTER_TIZEN_WINDOW_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "flutter_export.h"
+#include "flutter_tizen.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+// The geometry (position and size) of a window.
+typedef struct {
+  // The x-coordinate of the top left corner of the window.
+  int32_t x;
+  // The y-coordinate of the top left corner of the window.
+  int32_t y;
+  // The width of the window.
+  int32_t width;
+  // The height of the window.
+  int32_t height;
+} FlutterDesktopWindowGeometry;
+
+// The geometry (size) of the display screen.
+typedef struct {
+  // The width of the screen.
+  int32_t width;
+  // The height of the screen.
+  int32_t height;
+} FlutterDesktopScreenGeometry;
+
+// ========== Window ==========
+
+// Returns the geometry (position and size) of the window associated with
+// the given view.
+FLUTTER_EXPORT FlutterDesktopWindowGeometry
+FlutterDesktopWindowGetGeometry(FlutterDesktopViewRef view);
+
+// Sets the geometry (position and size) of the window associated with
+// the given view.
+//
+// If any field of |geometry| is -1, the current value for that field is
+// preserved.
+//
+// Returns true if the geometry was successfully set, false otherwise.
+FLUTTER_EXPORT bool FlutterDesktopWindowSetGeometry(
+    FlutterDesktopViewRef view,
+    const FlutterDesktopWindowGeometry* geometry);
+
+// Returns the geometry (size) of the screen that the window is on.
+FLUTTER_EXPORT FlutterDesktopScreenGeometry
+FlutterDesktopWindowGetScreenGeometry(FlutterDesktopViewRef view);
+
+// Returns the current rotation (in degrees) of the window.
+FLUTTER_EXPORT int32_t
+FlutterDesktopWindowGetRotation(FlutterDesktopViewRef view);
+
+// Activates the window associated with the given view.
+FLUTTER_EXPORT void FlutterDesktopWindowActivate(FlutterDesktopViewRef view);
+
+// Raises the window associated with the given view to the top of the
+// stacking order.
+FLUTTER_EXPORT void FlutterDesktopWindowRaise(FlutterDesktopViewRef view);
+
+// Lowers the window associated with the given view to the bottom of the
+// stacking order.
+FLUTTER_EXPORT void FlutterDesktopWindowLower(FlutterDesktopViewRef view);
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // FLUTTER_SHELL_PLATFORM_TIZEN_PUBLIC_FLUTTER_TIZEN_WINDOW_H_