From 956a401f9c955f26b7e661dc80f76bfc43fc4124 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sat, 1 Sep 2018 23:28:28 +0800
Subject: Initial commit

---
 CruUI/application.cpp | 96 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 CruUI/application.cpp

(limited to 'CruUI/application.cpp')

diff --git a/CruUI/application.cpp b/CruUI/application.cpp
new file mode 100644
index 00000000..4fd2cf9f
--- /dev/null
+++ b/CruUI/application.cpp
@@ -0,0 +1,96 @@
+#include "application.h"
+
+#include "timer.h"
+#include "ui/window.h"
+#include "graph/graph.h"
+
+namespace cru {
+    constexpr int invoke_later_message_id = WM_USER + 2000;
+
+    Application* Application::instance_ = nullptr;
+
+    Application * Application::GetInstance() {
+        return instance_;
+    }
+
+    Application::Application(HINSTANCE h_instance)
+        : h_instance_(h_instance) {
+
+        if (instance_)
+            throw std::runtime_error("A application instance already exists.");
+
+        instance_ = this;
+
+        window_manager_ = std::make_unique<ui::WindowManager>();
+        graph_manager_ = std::make_unique<graph::GraphManager>();
+        timer_manager_ = std::make_unique<TimerManager>();
+    }
+
+    Application::~Application()
+    {
+        instance_ = nullptr;
+    }
+
+    int Application::Run()
+    {
+        MSG msg;
+
+        while (GetMessage(&msg, nullptr, 0, 0))
+        {
+            if (!HandleThreadMessage(msg))
+            {
+                TranslateMessage(&msg);
+                DispatchMessage(&msg);
+
+            }
+        }
+
+        return static_cast<int>(msg.wParam);
+    }
+
+    void Application::Quit(const int quit_code) {
+        ::PostQuitMessage(quit_code);
+    }
+
+    bool Application::HandleThreadMessage(const MSG& message)
+    {
+        if (message.hwnd != nullptr)
+            return false;
+
+        switch (message.message)
+        {
+        case invoke_later_message_id:
+        {
+            const auto p_action = reinterpret_cast<InvokeLaterAction*>(message.wParam);
+            (*p_action)();
+            delete p_action;
+            return true;
+        }
+        case WM_TIMER:
+        {
+            const auto action = timer_manager_->GetAction(static_cast<UINT_PTR>(message.wParam));
+            if (action.has_value())
+            {
+                action.value()();
+                return true;
+            }
+            break;
+        }
+        default:
+            return false;
+        }
+        return false;
+    }
+
+    void InvokeLater(const InvokeLaterAction& action) {
+        //copy the action to a safe place
+        auto p_action_copy = new InvokeLaterAction(action);
+
+        PostMessage(
+            nullptr,
+            invoke_later_message_id,
+            reinterpret_cast<WPARAM>(p_action_copy),
+            0
+        );
+    }
+}
-- 
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