terminal/src/buffer/out/OutputCellRect.hpp

50 lines
1.4 KiB
C++

/*++
Copyright (c) Microsoft Corporation
Licensed under the MIT license.
Module Name:
- OutputCellRect.hpp
Abstract:
- Designed to hold a rectangular area of OutputCells where the column/row count is known ahead of time.
- This is done for performance reasons (one big heap allocation block with appropriate views instead of tiny allocations.)
- NOTE: For cases where the internal buffer will not change during your call, use Iterators and Views to completely
avoid any copy or allocate at all. Only use this when a copy of your content or the buffer is needed.
Author:
- Michael Niksa (MiNiksa) 12-Oct-2018
Revision History:
- Based on work from OutputCell.hpp/cpp by Austin Diviness (AustDi)
--*/
#pragma once
#include "DbcsAttribute.hpp"
#include "TextAttribute.hpp"
#include "OutputCell.hpp"
#include "OutputCellIterator.hpp"
class OutputCellRect final
{
public:
OutputCellRect();
OutputCellRect(const size_t rows, const size_t cols);
gsl::span<OutputCell> GetRow(const size_t row);
OutputCellIterator GetRowIter(const size_t row) const;
size_t Height() const noexcept;
size_t Width() const noexcept;
private:
std::vector<OutputCell> _storage;
OutputCell* _FindRowOffset(const size_t row);
const OutputCell* _FindRowOffset(const size_t row) const;
size_t _cols;
size_t _rows;
};