NinePatch.h

/*
 * Gamedev Framework (gf)
 * Copyright (C) 2016-2021 Julien Bernard
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 */
#ifndef GF_NINE_PATCH_H
#define GF_NINE_PATCH_H

#include "GraphicsApi.h"
#include "Transformable.h"
#include "Vertex.h"
#include "VertexBuffer.h"

namespace gf {
#ifndef DOXYGEN_SHOULD_SKIP_THIS
inline namespace v1 {
#endif

  class Texture;

  class GF_GRAPHICS_API NinePatch : public Transformable {
  public:
    NinePatch();

    NinePatch(const Texture& texture);

    NinePatch(const Texture& texture, const RectF& textureRect);

    void setTexture(const Texture& texture, bool resetRect = false);

    const Texture& getTexture() const {
      return *m_texture;
    }

    bool hasTexture() const {
      return m_texture != nullptr;
    }

    void unsetTexture();

    void setTextureRect(const RectF& rect);

    const RectF& getTextureRect() const {
      return m_textureRect;
    }

    void setColor(const Color4f& color);

    const Color4f& getColor() const;

    void setLimits(float top, float bottom, float left, float right);

    void setVerticalLimits(float top, float bottom);

    void setHorizontalLimits(float left, float right);

    void setSize(Vector2f size);

    Vector2f getSize() const {
      return m_size;
    }

    RectF getLocalBounds() const;

    void setAnchor(Anchor anchor);

    VertexBuffer commitGeometry() const;

    virtual void draw(RenderTarget& target, const RenderStates& states) override;

  private:
    void updatePositions();
    void updateTexCoords();

  private:
    const Texture *m_texture;
    RectF m_textureRect;

    float m_top;
    float m_bottom;
    float m_left;
    float m_right;

    Vector2f m_size;

    Vertex m_vertices[16];
  };


#ifndef DOXYGEN_SHOULD_SKIP_THIS
}
#endif
}

#endif // GF_NINE_PATCH_H