From 0dcf8e686b93cca54a424affe0455d0a97d6c2ef Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 3 Mar 2020 23:36:45 +0800
Subject: ...

---
 include/cru/ui/controls/text_block.hpp  | 23 +++++++++---
 include/cru/ui/controls/text_box.hpp    |  2 +
 include/cru/ui/controls/text_common.hpp | 66 +++++++++++++++++++++++++++++++++
 3 files changed, 85 insertions(+), 6 deletions(-)
 create mode 100644 include/cru/ui/controls/text_common.hpp

(limited to 'include/cru/ui/controls')

diff --git a/include/cru/ui/controls/text_block.hpp b/include/cru/ui/controls/text_block.hpp
index 708b62f1..02e0eb2b 100644
--- a/include/cru/ui/controls/text_block.hpp
+++ b/include/cru/ui/controls/text_block.hpp
@@ -1,14 +1,18 @@
 #pragma once
 #include "../no_child_control.hpp"
 
+#include "text_common.hpp"
+
 #include <memory>
 
 namespace cru::ui::render {
+class StackLayoutRenderObject;
 class TextRenderObject;
-}
+class CanvasRenderObject;
+}  // namespace cru::ui::render
 
 namespace cru::ui::controls {
-class TextBlock : public NoChildControl {
+class TextBlock : public NoChildControl, public virtual ITextControl {
  public:
   static constexpr std::string_view control_type = "TextBlock";
 
@@ -24,16 +28,23 @@ class TextBlock : public NoChildControl {
   TextBlock& operator=(TextBlock&& other) = delete;
   ~TextBlock() override;
 
-  std::string_view GetControlType() const final {
-    return control_type;
-  }
+  std::string_view GetControlType() const final { return control_type; }
 
   render::RenderObject* GetRenderObject() const override;
 
   std::string GetText() const;
   void SetText(std::string text);
 
+  render::TextRenderObject* GetTextRenderObject() override;
+  render::CanvasRenderObject* GetCaretRenderObject() override;
+  platform::graph::IBrush* GetCaretBrush() override;
+
  private:
-  std::unique_ptr<render::TextRenderObject> render_object_;
+  std::unique_ptr<render::StackLayoutRenderObject> root_render_object_;
+  std::unique_ptr<render::TextRenderObject> text_render_object_;
+  std::unique_ptr<render::CanvasRenderObject> caret_render_object_;
+  std::shared_ptr<platform::graph::IBrush> caret_brush_;
+
+  std::unique_ptr<TextControlService> service_;
 };
 }  // namespace cru::ui::controls
diff --git a/include/cru/ui/controls/text_box.hpp b/include/cru/ui/controls/text_box.hpp
index 76a6299e..888a9527 100644
--- a/include/cru/ui/controls/text_box.hpp
+++ b/include/cru/ui/controls/text_box.hpp
@@ -5,6 +5,7 @@
 
 namespace cru::ui::render {
 class BorderRenderObject;
+class StackLayoutRenderObject;
 class TextRenderObject;
 class CanvasRenderObject;
 }  // namespace cru::ui::render
@@ -27,6 +28,7 @@ class TextBox : public NoChildControl {
 
  private:
   std::unique_ptr<render::BorderRenderObject> border_render_object_;
+  std::unique_ptr<render::StackLayoutRenderObject> stack_layout_render_object_;
   std::unique_ptr<render::TextRenderObject> text_render_object_;
   std::unique_ptr<render::CanvasRenderObject> caret_render_object_;
 };
diff --git a/include/cru/ui/controls/text_common.hpp b/include/cru/ui/controls/text_common.hpp
new file mode 100644
index 00000000..7398764f
--- /dev/null
+++ b/include/cru/ui/controls/text_common.hpp
@@ -0,0 +1,66 @@
+#pragma once
+#include "../base.hpp"
+
+#include "cru/ui/ui_event.hpp"
+
+#include <functional>
+#include <optional>
+
+namespace cru::platform::graph {
+struct IBrush;
+}
+
+namespace cru::ui::render {
+class TextRenderObject;
+class CanvasRenderObject;
+}  // namespace cru::ui::render
+
+namespace cru::ui::controls {
+
+struct ITextControl : virtual Interface {
+  virtual render::TextRenderObject* GetTextRenderObject() = 0;
+  virtual render::CanvasRenderObject* GetCaretRenderObject() = 0;
+  virtual platform::graph::IBrush* GetCaretBrush() = 0;
+};
+
+class TextControlService : public Object {
+ public:
+  TextControlService(Control* control, ITextControl* text_control);
+
+  CRU_DELETE_COPY(TextControlService)
+  CRU_DELETE_MOVE(TextControlService)
+
+  ~TextControlService();
+
+ public:
+  int GetCaretPosition() { return caret_position_; }
+  void SetCaretPosition(int position) { caret_position_ = position; }
+
+  bool IsCaretVisible() { return caret_visible_; }
+  void SetCaretVisible(bool visible);
+
+  // please set correct offset before calling this
+  void DrawCaret(platform::graph::IPainter* painter);
+
+ private:
+  void SetupCaretTimer();
+  void TearDownCaretTimer();
+
+ private:
+  Control* control_;
+  ITextControl* text_control_;
+  std::vector<EventRevokerGuard> event_revoker_guards_;
+
+  bool caret_visible_ = false;
+  int caret_position_ = 0;
+  unsigned long caret_timer_tag_;
+  // this is used for blinking of caret
+  bool caret_show_ = true;
+
+  // nullopt means not selecting
+  std::optional<MouseButton> select_down_button_;
+
+  // before the char
+  int select_start_position_;
+};
+}  // namespace cru::ui::controls
-- 
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