Add cursor.

4 files changed, 72 insertions, 0 deletions

diff --git a/src/application.cpp b/src/application.cpp
index f53a002d..7658a340 100644
--- a/src/application.cpp
+++ b/src/application.cpp
@@ -5,6 +5,7 @@
 #include "exception.h"
 #include "timer.h"
 #include "ui/window.h"
+#include "ui/cursor.h"
 #include "graph/graph.h"
 #include "ui/animations/animation.h"
 
@@ -86,6 +87,16 @@ namespace cru {
         return instance_;
     }
 
+    namespace
+    {
+        void LoadSystemCursor(HINSTANCE h_instance)
+        {
+            ui::cursors[ui::cursor_arrow_key] = std::make_shared<ui::Cursor>(::LoadCursorW(h_instance, MAKEINTRESOURCEW(IDC_ARROW)), false);
+            ui::cursors[ui::cursor_hand_key] = std::make_shared<ui::Cursor>(::LoadCursorW(h_instance, MAKEINTRESOURCEW(IDC_HAND)), false);
+            ui::cursors[ui::cursor_i_beam_key] = std::make_shared<ui::Cursor>(::LoadCursorW(h_instance, MAKEINTRESOURCEW(IDC_IBEAM)), false);
+        }
+    }
+
     Application::Application(HINSTANCE h_instance)
         : h_instance_(h_instance) {
 
@@ -112,10 +123,14 @@ namespace cru {
         if (!::SystemParametersInfoW(SPI_GETCARETWIDTH, 0 , &caret_width, 0))
             throw Win32Error(::GetLastError(), "Failed to get system caret width.");
         caret_info_.half_caret_width = caret_width / 2.0f;
+
+        LoadSystemCursor(h_instance);
     }
 
     Application::~Application()
     {
+        ui::cursors.clear();
+
         animation_manager_.reset();
         instance_ = nullptr;
     }
diff --git a/src/ui/control.h b/src/ui/control.h
index b2321e2b..666d7f69 100644
--- a/src/ui/control.h
+++ b/src/ui/control.h
@@ -346,6 +346,10 @@ namespace cru
             virtual Size OnMeasureContent(const Size& available_size);
             virtual void OnLayoutContent(const Rect& rect);
 
+
+            //*************** region: cursor ***************
+            //TODO!
+
         private:
             // Only for layout manager to use.
             // Check if the old position is updated to current position.
diff --git a/src/ui/cursor.cpp b/src/ui/cursor.cpp
new file mode 100644
index 00000000..e0bd1814
--- /dev/null
+++ b/src/ui/cursor.cpp
@@ -0,0 +1,20 @@
+#include "cursor.h"
+
+#include "exception.h"
+
+namespace cru::ui
+{
+    Cursor::Cursor(HCURSOR handle, const bool auto_release)
+        : handle_(handle), auto_release_(auto_release)
+    {
+
+    }
+
+    Cursor::~Cursor()
+    {
+        if (auto_release_)
+            ::DestroyCursor(handle_);
+    }
+
+    std::unordered_map<String, Cursor::Ptr> cursors;
+}
diff --git a/src/ui/cursor.h b/src/ui/cursor.h
new file mode 100644
index 00000000..b57db9b7
--- /dev/null
+++ b/src/ui/cursor.h
@@ -0,0 +1,33 @@
+#pragma once
+
+#include "system_headers.h"
+#include <memory>
+#include <unordered_map>
+
+#include "base.h"
+
+namespace cru::ui
+{
+    class Cursor : public Object
+    {
+    public:
+        using Ptr = std::shared_ptr<Cursor>;
+
+        Cursor(HCURSOR handle, bool auto_release);
+        Cursor(const Cursor& other) = delete;
+        Cursor(Cursor&& other) = delete;
+        Cursor& operator=(const Cursor& other) = delete;
+        Cursor& operator=(Cursor&& other) = delete;
+        ~Cursor() override;
+
+    private:
+        HCURSOR handle_;
+        bool auto_release_;
+    };
+
+
+    extern std::unordered_map<String, Cursor::Ptr> cursors;
+    constexpr auto cursor_arrow_key = L"System_Arrow";
+    constexpr auto cursor_hand_key = L"System_Hand";
+    constexpr auto cursor_i_beam_key = L"System_IBeam";
+}