urho3d/Source/Samples/02_HelloGUI/HelloGUI.h

//
// Copyright (c) 2008-2013 the Urho3D project.
//
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// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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#pragma once

#include "Sample.h"
#include "Window.h"

using namespace Urho3D;

/// A simple 'HelloWorld' GUI created purely from code.
/// This sample demonstrates:
///     - Creation of controls and building a UI hierarchy;
///     - Loading UI style from XML and applying it to controls;
///     - Handling of global and per-control events;
class HelloGUI : public Sample
{
    OBJECT(HelloGUI);

public:
    /// Construct.
    HelloGUI(Context* context);

    /// Setup after engine initialization and before running the main loop.
    virtual void Start();

private:
    /// Creates and initializes a Window control.
    void InitWindow();

    /// Creates and add various common controls for demonstration purposes.
    void InitControls();

    /// Convenience method for event subscription.
    void SubscribeToEvents();

    /// Callback method invoked when a logic update event is dispatched.
    void HandleUpdate(StringHash eventType, VariantMap& eventData);

    /// Callback method invoked whenever any control is clicked.
    void HandleControlClicked(StringHash eventType, VariantMap& eventData);

    /// Callback method invoked when the close button is pressed and released.
    void HandleClosePressed(StringHash eventType, VariantMap& eventData);

    /// The Window.
    SharedPtr<Window> window_;
    /// The UI's root UIElement.
    SharedPtr<UIElement> uiRoot_;
};