urho3d/Engine/UI/BorderImage.h

//
// Urho3D Engine
// Copyright (c) 2008-2011 Lasse Öörni
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//

#pragma once

#include "UIElement.h"

class Texture;
class Texture2D;

/// %Image %UI element with optional border.
class BorderImage : public UIElement
{
    OBJECT(BorderImage);
    
    using UIElement::SetStyle;
    
public:
    /// Construct.
    BorderImage(Context* context);
    /// Destruct.
    virtual ~BorderImage();
    /// Register object factory.
    static void RegisterObject(Context* context);
    
    /// %Set UI element style from XML data.
    virtual void SetStyle(const XMLElement& element);
    /// Return UI rendering batches.
    virtual void GetBatches(PODVector<UIBatch>& batches, PODVector<UIQuad>& quads, const IntRect& currentScissor);
    
    /// %Set textures.
    void SetTexture(Texture* texture);
    /// %Set part of texture to use as the image.
    void SetImageRect(const IntRect& rect);
    /// Use whole texture as the image.
    void SetFullImageRect();
    /// %Set image border dimensions.
    void SetBorder(const IntRect& rect);
    /// %Set offset to image rectangle used on hover.
    void SetHoverOffset(const IntVector2& offset);
    /// %Set offset to image rectangle used on hover.
    void SetHoverOffset(int x, int y);
    
    /// Return texture.
    Texture* GetTexture() const { return texture_; }
    /// Return image rectangle.
    const IntRect& GetImageRect() const { return imageRect_; }
    /// Return image border dimensions.
    const IntRect& GetBorder() const { return border_; }
    /// Return offset to image rectangle used on hover.
    const IntVector2& GetHoverOffset() const { return hoverOffset_; }
    
protected:
    /// Return UI rendering batches with offset to image rectangle.
    void GetBatches(PODVector<UIBatch>& batches, PODVector<UIQuad>& quads, const IntRect& currentScissor, const IntVector2& offset);
    
    /// Texture.
    SharedPtr<Texture> texture_;
    /// Image rectangle.
    IntRect imageRect_;
    /// Image border dimensions.
    IntRect border_;
    /// Offset to image rectangle on hover.
    IntVector2 hoverOffset_;
};