/* Copyright (c) 2018-2025, Arm Limited and Contributors
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * 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 "headless_window.h"

namespace vkb
{
HeadlessWindow::HeadlessWindow(const Window::Properties &properties) :
    Window(properties)
{
}

VkSurfaceKHR HeadlessWindow::create_surface(vkb::core::InstanceC &instance)
{
	return create_surface(instance.get_handle(), VK_NULL_HANDLE);
}

VkSurfaceKHR HeadlessWindow::create_surface(VkInstance instance, VkPhysicalDevice)
{
	VkSurfaceKHR surface = VK_NULL_HANDLE;

	if (instance)
	{
		VkHeadlessSurfaceCreateInfoEXT info{};
		info.sType = VK_STRUCTURE_TYPE_HEADLESS_SURFACE_CREATE_INFO_EXT;

		VK_CHECK(vkCreateHeadlessSurfaceEXT(instance, &info, VK_NULL_HANDLE, &surface));
	}

	return surface;
}

bool HeadlessWindow::should_close()
{
	return closed;
}

void HeadlessWindow::close()
{
	closed = true;
}

float HeadlessWindow::get_dpi_factor() const
{
	// This factor is used for scaling UI elements, so return 1.0f (1 x n = n)
	return 1.0f;
}

std::vector<const char *> HeadlessWindow::get_required_surface_extensions() const
{
	return {VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME};
}
}        // namespace vkb
