From 2d4a5df468f8bc13fbb657e010c393365ef79bda Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 10 Nov 2020 15:52:15 +0800
Subject: ...

---
 src/ui/controls/TextBox.cpp            |  2 --
 src/ui/controls/TextControlService.hpp | 26 +++++++++++++++++++++++++-
 src/ui/host/LayoutPaintCycler.cpp      |  4 ++--
 3 files changed, 27 insertions(+), 5 deletions(-)

(limited to 'src/ui')

diff --git a/src/ui/controls/TextBox.cpp b/src/ui/controls/TextBox.cpp
index 4a8d6658..6ba6ecb2 100644
--- a/src/ui/controls/TextBox.cpp
+++ b/src/ui/controls/TextBox.cpp
@@ -10,9 +10,7 @@
 
 namespace cru::ui::controls {
 using render::BorderRenderObject;
-using render::CanvasRenderObject;
 using render::ScrollRenderObject;
-using render::StackLayoutRenderObject;
 using render::TextRenderObject;
 
 TextBox::TextBox()
diff --git a/src/ui/controls/TextControlService.hpp b/src/ui/controls/TextControlService.hpp
index 92a66f5e..d50621ea 100644
--- a/src/ui/controls/TextControlService.hpp
+++ b/src/ui/controls/TextControlService.hpp
@@ -298,6 +298,24 @@ class TextControlService : public Object {
                     selection.GetStart(), selection.GetEnd());
   }
 
+  void UpdateInputMethodPosition() {
+    if (auto input_method_context = this->GetInputMethodContext()) {
+      Point right_bottom =
+          this->GetTextRenderObject()->GetTotalOffset() +
+          this->GetTextRenderObject()->GetCaretRect().GetRightBottom();
+      right_bottom.x += 5;
+      right_bottom.y += 5;
+
+      if constexpr (debug_flags::text_service) {
+        log::TagDebug(log_tag,
+                      u"Calculate input method candidate window position: {}.",
+                      right_bottom.ToDebugString());
+      }
+
+      input_method_context->SetCandidateWindowPosition(right_bottom);
+    }
+  }
+
   template <typename TArgs>
   void SetupOneHandler(event::RoutedEvent<TArgs>* (Control::*event)(),
                        void (TextControlService::*handler)(
@@ -449,6 +467,12 @@ class TextControlService : public Object {
                 if (text == u"\b") return;
                 this->ReplaceSelectedText(text);
               });
+
+      host::WindowHost* window_host = control_->GetWindowHost();
+      if (window_host)
+        input_method_context_event_guard_ +=
+            window_host->AfterLayoutEvent()->AddHandler(
+                [this](auto) { this->UpdateInputMethodPosition(); });
     }
   }
 
@@ -481,5 +505,5 @@ class TextControlService : public Object {
 
   // nullopt means not selecting
   std::optional<MouseButton> select_down_button_;
-};  // namespace cru::ui::controls
+};
 }  // namespace cru::ui::controls
diff --git a/src/ui/host/LayoutPaintCycler.cpp b/src/ui/host/LayoutPaintCycler.cpp
index 9b319da4..fd581e00 100644
--- a/src/ui/host/LayoutPaintCycler.cpp
+++ b/src/ui/host/LayoutPaintCycler.cpp
@@ -29,7 +29,7 @@ void LayoutPaintCycler::OnCycle() {
       host_->Repaint();
     }
   }
-  layout_dirty_ = true;
-  paint_dirty_ = true;
+  layout_dirty_ = false;
+  paint_dirty_ = false;
 }
 }  // namespace cru::ui::host
-- 
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