flutter-tizen · JSUYA · Mar 31, 2026 · May 15, 2026 · May 18, 2026 · May 18, 2026
diff --git a/build/config/BUILDCONFIG.gn b/build/config/BUILDCONFIG.gn
@@ -31,6 +31,9 @@ declare_args() {
 
   # Use the system libstdc++ without building third_party/libcxx from source.
   use_system_cxx = false
+
+  # Use tizen-core-wl API instead of ecore.
+  use_tcore = false
 }
 
 _default_configs = [

diff --git a/flutter/shell/platform/tizen/BUILD.gn b/flutter/shell/platform/tizen/BUILD.gn
@@ -17,15 +17,6 @@ config("flutter_tizen_config") {
     "${sysroot_path}/usr/include/dali-adaptor",
     "${sysroot_path}/usr/include/dali-toolkit",
     "${sysroot_path}/usr/include/dlog",
-    "${sysroot_path}/usr/include/ecore-1",
-    "${sysroot_path}/usr/include/ecore-imf-1",
-    "${sysroot_path}/usr/include/ecore-input-1",
-    "${sysroot_path}/usr/include/ecore-wayland-1",
-    "${sysroot_path}/usr/include/ecore-wl2-1",
-    "${sysroot_path}/usr/include/efl-1",
-    "${sysroot_path}/usr/include/eina-1",
-    "${sysroot_path}/usr/include/eina-1/eina",
-    "${sysroot_path}/usr/include/eo-1",
     "${sysroot_path}/usr/include/feedback",
     "${sysroot_path}/usr/include/system",
     "${sysroot_path}/usr/include/tzsh",
@@ -35,6 +26,28 @@ config("flutter_tizen_config") {
     "${sysroot_path}/usr/lib/glib-2.0/include",
   ]
 
+  # tcore-specific includes
+  if (use_tcore) {
+    include_dirs += [
+      "${sysroot_path}/usr/include/tizen-core",
+      "${sysroot_path}/usr/include/tizen-core-imf",
+      "${sysroot_path}/usr/include/tizen-core-wl",
+    ]
+  } else {
+    # ecore-specific includes
+    include_dirs += [
+      "${sysroot_path}/usr/include/ecore-1",
+      "${sysroot_path}/usr/include/ecore-imf-1",
+      "${sysroot_path}/usr/include/ecore-input-1",
+      "${sysroot_path}/usr/include/ecore-wayland-1",
+      "${sysroot_path}/usr/include/ecore-wl2-1",
+      "${sysroot_path}/usr/include/efl-1",
+      "${sysroot_path}/usr/include/eina-1",
+      "${sysroot_path}/usr/include/eina-1/eina",
+      "${sysroot_path}/usr/include/eo-1",
+    ]
+  }
+
   cflags_cc = [
     "-Wno-newline-eof",
     "-Wno-macro-redefined",
@@ -93,14 +106,25 @@ template("embedder") {
       "logger.cc",
       "system_utils.cc",
       "tizen_event_loop.cc",
-      "tizen_input_method_context.cc",
       "tizen_renderer.cc",
       "tizen_renderer_egl.cc",
       "tizen_renderer_gl.cc",
       "tizen_vsync_waiter.cc",
-      "tizen_window_ecore_wl2.cc",
     ]
 
+    # Select window implementation based on use_tcore
+    if (use_tcore) {
+      sources += [
+        "tizen_input_method_context_tcore.cc",
+        "tizen_window_tcore_wl.cc",
+      ]
+    } else {
+      sources += [
+        "tizen_input_method_context.cc",
+        "tizen_window_ecore_wl2.cc",
+      ]
+    }
+
     lib_dirs = [ "//engine/${target_cpu}" ]
 
     libs = [
@@ -113,11 +137,7 @@ template("embedder") {
       "capi-system-info",
       "capi-system-system-settings",
       "dlog",
-      "ecore",
-      "ecore_imf",
-      "ecore_input",
-      "ecore_wl2",
-      "eina",
+      "glib-2.0",
       "gio-2.0",
       "feedback",
       "flutter_engine",
@@ -130,6 +150,23 @@ template("embedder") {
       "GLESv2",
     ]
 
+    # tcore-specific or ecore-specific libraries
+    if (use_tcore) {
+      libs += [
+        "tizen-core",
+        "tizen-core-imf",
+        "tizen-core-wl",
+      ]
+    } else {
+      libs += [
+        "ecore",
+        "ecore_imf",
+        "ecore_input",
+        "ecore_wl2",
+        "eina",
+      ]
+    }
+
     if (target_name == "flutter_tizen_common" ||
         target_name == "flutter_tizen_common_experimental") {
       sources += [ "channels/tizen_shell.cc" ]
@@ -143,6 +180,11 @@ template("embedder") {
     defines += invoker.defines
     defines += [ "FLUTTER_ENGINE_NO_PROTOTYPES" ]
 
+    # Add USE_TCORE_WL define when using tcore
+    if (use_tcore) {
+      defines += [ "USE_TCORE_WL" ]
+    }
+
     if (target_name == "flutter_tizen_mobile_experimental" ||
         target_name == "flutter_tizen_tv_experimental" ||
         target_name == "flutter_tizen_common_experimental") {
@@ -255,6 +297,10 @@ executable("flutter_tizen_unittests") {
 
   ldflags = [ "-Wl,--unresolved-symbols=ignore-in-shared-libs" ]
 
+  if (use_tcore) {
+    defines = [ "USE_TCORE_WL" ]
+  }
+
   configs += [ ":flutter_tizen_config" ]
 
   deps += [

diff --git a/flutter/shell/platform/tizen/channels/input_panel_channel.cc b/flutter/shell/platform/tizen/channels/input_panel_channel.cc
@@ -7,7 +7,11 @@
 #include "flutter/shell/platform/common/client_wrapper/include/flutter/event_stream_handler_functions.h"
 #include "flutter/shell/platform/common/client_wrapper/include/flutter/standard_method_codec.h"
 #include "flutter/shell/platform/tizen/logger.h"
+#ifdef USE_TCORE_WL
+#include "flutter/shell/platform/tizen/tizen_input_method_context_tcore.h"
+#else
 #include "flutter/shell/platform/tizen/tizen_input_method_context.h"
+#endif
 
 namespace {
 

diff --git a/flutter/shell/platform/tizen/channels/key_mapping.cc b/flutter/shell/platform/tizen/channels/key_mapping.cc
@@ -177,7 +177,7 @@ std::map<uint32_t, uint32_t> kScanCodeToGtkKeyCode = {
     {0x0000024d, 269025069},  // launchScreenSaver
 };
 
-std::map<int, int> kEcoreModifierToGtkModifier = {
+std::map<int, int> kModifierToGtkModifier = {
     {0x0001, 1 << 0},   // SHIFT -> modifierShift
     {0x0002, 1 << 2},   // CTRL -> modifierControl
     {0x0004, 1 << 3},   // ALT -> modifierMod1

diff --git a/flutter/shell/platform/tizen/channels/key_mapping.h b/flutter/shell/platform/tizen/channels/key_mapping.h
@@ -19,15 +19,15 @@
 // legacy RawKeyboard API is removed from the framework in the future.
 extern std::map<uint32_t, uint32_t> kScanCodeToGtkKeyCode;
 
-// Maps Ecore modifiers to GTK modifiers.
+// Maps Tizen modifier bitmask values to GTK modifiers.
 //
-// The values are originally defined in:
-// - efl/Ecore_Input.h
-// - flutter/raw_keyboard_linux.dart (GtkKeyHelper)
+// The modifier bitmask values match tizen_core_wl_modifier_e.
+// The GTK modifier values are from flutter/raw_keyboard_linux.dart
+// (GtkKeyHelper).
 //
 // Provided only for backward compatibility. This will be removed after the
 // legacy RawKeyboard API is removed from the framework in the future.
-extern std::map<int, int> kEcoreModifierToGtkModifier;
+extern std::map<int, int> kModifierToGtkModifier;
 
 // Maps XKB scan codes to Flutter's physical key codes.
 //

diff --git a/flutter/shell/platform/tizen/channels/keyboard_channel.cc b/flutter/shell/platform/tizen/channels/keyboard_channel.cc
@@ -164,7 +164,7 @@ void KeyboardChannel::SendChannelEvent(const char* key,
   }
 
   int gtk_modifiers = 0;
-  for (auto element : kEcoreModifierToGtkModifier) {
+  for (auto element : kModifierToGtkModifier) {
     if (element.first & modifiers) {
       gtk_modifiers |= element.second;
     }

diff --git a/flutter/shell/platform/tizen/channels/text_input_channel.cc b/flutter/shell/platform/tizen/channels/text_input_channel.cc
@@ -335,7 +335,6 @@ bool TextInputChannel::HandleKey(const char* key,
     return true;
 #endif
   } else {
-    FT_LOG(Info) << "Key[" << key << "] is unhandled.";
     return false;
   }
 

diff --git a/flutter/shell/platform/tizen/channels/text_input_channel.h b/flutter/shell/platform/tizen/channels/text_input_channel.h
@@ -11,7 +11,11 @@
 #include "flutter/shell/platform/common/client_wrapper/include/flutter/binary_messenger.h"
 #include "flutter/shell/platform/common/client_wrapper/include/flutter/method_channel.h"
 #include "flutter/shell/platform/common/text_input_model.h"
+#ifdef USE_TCORE_WL
+#include "flutter/shell/platform/tizen/tizen_input_method_context_tcore.h"
+#else
 #include "flutter/shell/platform/tizen/tizen_input_method_context.h"
+#endif
 #include "rapidjson/document.h"
 
 namespace flutter {

diff --git a/flutter/shell/platform/tizen/channels/window_channel.cc b/flutter/shell/platform/tizen/channels/window_channel.cc
@@ -8,7 +8,11 @@
 #include "flutter/shell/platform/tizen/channels/encodable_value_holder.h"
 #include "flutter/shell/platform/tizen/logger.h"
 #include "flutter/shell/platform/tizen/tizen_window.h"
+#ifdef USE_TCORE_WL
+#include "flutter/shell/platform/tizen/tizen_window_tcore_wl.h"
+#else
 #include "flutter/shell/platform/tizen/tizen_window_ecore_wl2.h"
+#endif
 
 namespace flutter {
 

diff --git a/flutter/shell/platform/tizen/external_texture_surface_vulkan_buffer_dma.cc b/flutter/shell/platform/tizen/external_texture_surface_vulkan_buffer_dma.cc
@@ -3,6 +3,9 @@
 // found in the LICENSE file.
 
 #include "flutter/shell/platform/tizen/external_texture_surface_vulkan_buffer_dma.h"
+
+#include <unistd.h>
+
 #include "flutter/shell/platform/tizen/logger.h"
 
 namespace flutter {

diff --git a/flutter/shell/platform/tizen/flutter_tizen.cc b/flutter/shell/platform/tizen/flutter_tizen.cc
@@ -20,7 +20,11 @@
 #include "flutter/shell/platform/tizen/tizen_view_nui.h"
 #endif
 #include "flutter/shell/platform/tizen/tizen_window.h"
+#ifdef USE_TCORE_WL
+#include "flutter/shell/platform/tizen/tizen_window_tcore_wl.h"
+#else
 #include "flutter/shell/platform/tizen/tizen_window_ecore_wl2.h"
+#endif
 
 namespace {
 
@@ -201,12 +205,21 @@ FlutterDesktopViewRef FlutterDesktopViewCreateFromNewWindow(
 
   std::unique_ptr<flutter::TizenWindow> window;
 
+#ifdef USE_TCORE_WL
+  window = std::make_unique<flutter::TizenWindowTcoreWl>(
+      window_geometry, window_properties.transparent,
+      window_properties.focusable, window_properties.top_level,
+      window_properties.pointing_device_support,
+      window_properties.floating_menu_support, window_properties.window_handle,
+      window_properties.renderer_type == kEVulkan);
+#else
   window = std::make_unique<flutter::TizenWindowEcoreWl2>(
       window_geometry, window_properties.transparent,
       window_properties.focusable, window_properties.top_level,
       window_properties.pointing_device_support,
       window_properties.floating_menu_support, window_properties.window_handle,
       window_properties.renderer_type == kEVulkan);
+#endif
 
   auto view = std::make_unique<flutter::FlutterTizenView>(
       flutter::kImplicitViewId, std::move(window),

diff --git a/flutter/shell/platform/tizen/flutter_tizen_display_monitor.cc b/flutter/shell/platform/tizen/flutter_tizen_display_monitor.cc
@@ -3,7 +3,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include <Ecore.h>
 #include <system_info.h>
 
 #include "flutter/shell/platform/tizen/flutter_tizen_display_monitor.h"
@@ -29,12 +28,11 @@ void FlutterTizenDisplayMonitor::UpdateDisplays() {
   display.display_id = 0;
   display.single_display = true;
 
-  double fps = ecore_animator_frametime_get();
-  if (fps <= 0.0) {
-    display.refresh_rate = 0.0;
-  } else {
-    display.refresh_rate = 1 / fps;
-  }
+  // TODO(jsuya): Default to 60Hz refresh rate. The previous implementation
+  // used ecore_animator_frametime_get(), which is no longer available after
+  // dropping the Ecore dependency. Replace this once tizen-core (or another
+  // public Tizen API) exposes a way to query the display refresh rate.
+  display.refresh_rate = 60.0;
 
   int32_t width = 0, height = 0, dpi = 0;
   FlutterTizenView* view = engine_->view();

diff --git a/flutter/shell/platform/tizen/flutter_tizen_engine.cc b/flutter/shell/platform/tizen/flutter_tizen_engine.cc
@@ -15,7 +15,11 @@
 #include "flutter/shell/platform/tizen/flutter_tizen_view.h"
 #include "flutter/shell/platform/tizen/logger.h"
 #include "flutter/shell/platform/tizen/system_utils.h"
+#ifdef USE_TCORE_WL
+#include "flutter/shell/platform/tizen/tizen_input_method_context_tcore.h"
+#else
 #include "flutter/shell/platform/tizen/tizen_input_method_context.h"
+#endif
 #include "flutter/shell/platform/tizen/tizen_renderer_egl.h"
 
 #ifdef FLUTTER_TIZEN_EXPERIMENTAL

diff --git a/flutter/shell/platform/tizen/flutter_tizen_engine_unittest.cc b/flutter/shell/platform/tizen/flutter_tizen_engine_unittest.cc
@@ -4,7 +4,11 @@
 
 #include "flutter/shell/platform/tizen/flutter_tizen_engine.h"
 
+#ifdef USE_TCORE_WL
+#include <tizen_core_wl.h>
+#else
 #include <Ecore.h>
+#endif
 
 #include "flutter/shell/platform/embedder/test_utils/proc_table_replacement.h"
 #include "flutter/shell/platform/tizen/testing/engine_modifier.h"
@@ -15,7 +19,13 @@ namespace testing {
 
 class FlutterTizenEngineTest : public ::testing::Test {
  public:
-  FlutterTizenEngineTest() { ecore_init(); }
+  FlutterTizenEngineTest() {
+#ifdef USE_TCORE_WL
+    tizen_core_wl_init();
+#else
+    ecore_init();
+#endif
+  }
 
  protected:
   void SetUp() {

diff --git a/flutter/shell/platform/tizen/flutter_tizen_texture_registrar_unittests.cc b/flutter/shell/platform/tizen/flutter_tizen_texture_registrar_unittests.cc
@@ -4,7 +4,11 @@
 
 #include "flutter/shell/platform/tizen/flutter_tizen_texture_registrar.h"
 
+#ifdef USE_TCORE_WL
+#include <tizen_core_wl.h>
+#else
 #include <Ecore.h>
+#endif
 
 #include <iostream>
 
@@ -18,7 +22,13 @@ namespace testing {
 
 class FlutterTizenTextureRegistrarTest : public ::testing::Test {
  public:
-  FlutterTizenTextureRegistrarTest() { ecore_init(); }
+  FlutterTizenTextureRegistrarTest() {
+#ifdef USE_TCORE_WL
+    tizen_core_wl_init();
+#else
+    ecore_init();
+#endif
+  }
 
  protected:
   void SetUp() {

diff --git a/flutter/shell/platform/tizen/public/flutter_tizen.h b/flutter/shell/platform/tizen/public/flutter_tizen.h
@@ -206,7 +206,7 @@ FLUTTER_EXPORT void FlutterDesktopViewDestroy(FlutterDesktopViewRef view);
 // Returns a native UI toolkit handle for manipulation in host application.
 //
 // Cast the returned void*
-// - window ecore wl2   : to Ecore_Wl2_Window*
+// - window ecore wl2   : to tizen_core_wl_window_h
 // @warning This API is a work-in-progress and may change.
 FLUTTER_EXPORT void* FlutterDesktopViewGetNativeHandle(
     FlutterDesktopViewRef view);