#ifndef DALI_DEMO_UTILITY_H
#define DALI_DEMO_UTILITY_H

/*
 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#include <dali/dali.h>
#include <dali/devel-api/adaptor-framework/image-loading.h>
#include <dali/public-api/math/uint-16-pair.h>
#include <dali/public-api/rendering/geometry.h>
#include <dali/public-api/rendering/texture.h>

namespace DemoHelper
{
Dali::Texture LoadTexture(const char*              imagePath,
                          Dali::ImageDimensions    size                  = Dali::ImageDimensions(),
                          Dali::FittingMode::Type  fittingMode           = Dali::FittingMode::DEFAULT,
                          Dali::SamplingMode::Type samplingMode          = Dali::SamplingMode::DEFAULT,
                          bool                     orientationCorrection = true)
{
  Dali::Devel::PixelBuffer pixelBuffer = LoadImageFromFile(imagePath, size, fittingMode, samplingMode, orientationCorrection);
  Dali::Texture            texture     = Dali::Texture::New(Dali::TextureType::TEXTURE_2D,
                                             pixelBuffer.GetPixelFormat(),
                                             pixelBuffer.GetWidth(),
                                             pixelBuffer.GetHeight());

  Dali::PixelData pixelData = Dali::Devel::PixelBuffer::Convert(pixelBuffer);
  texture.Upload(pixelData);

  return texture;
}

Dali::Texture LoadWindowFillingTexture(Dali::Uint16Pair size, const char* imagePath)
{
  return LoadTexture(imagePath, size, Dali::FittingMode::SCALE_TO_FILL, Dali::SamplingMode::BOX_THEN_LINEAR);
}

Dali::Geometry CreateTexturedQuad()
{
  struct Vertex
  {
    Dali::Vector2 position;
    Dali::Vector2 texCoord;
  };

  static const Vertex data[] = {{Dali::Vector2(-0.5f, -0.5f), Dali::Vector2(0.0f, 0.0f)},
                                {Dali::Vector2(0.5f, -0.5f), Dali::Vector2(1.0f, 0.0f)},
                                {Dali::Vector2(-0.5f, 0.5f), Dali::Vector2(0.0f, 1.0f)},
                                {Dali::Vector2(0.5f, 0.5f), Dali::Vector2(1.0f, 1.0f)}};

  Dali::VertexBuffer  vertexBuffer;
  Dali::Property::Map vertexFormat;
  vertexFormat["aPosition"] = Dali::Property::VECTOR2;
  vertexFormat["aTexCoord"] = Dali::Property::VECTOR2;

  //Create a vertex buffer for vertex positions and texture coordinates
  vertexBuffer = Dali::VertexBuffer::New(vertexFormat);
  vertexBuffer.SetData(data, 4u);

  //Create the geometry
  Dali::Geometry geometry = Dali::Geometry::New();
  geometry.AddVertexBuffer(vertexBuffer);
  geometry.SetType(Dali::Geometry::TRIANGLE_STRIP);

  return geometry;
}
} // namespace DemoHelper

#endif // DALI_DEMO_UTILITY_H