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using System;
using System.Collections.Generic;
using Avalonia.Markup.Xaml;
using Emgu.CV;
using Emgu.CV.CvEnum;
using UVtools.Core.Extensions;
using UVtools.Core.Objects;
using UVtools.WPF.Extensions;
using Point = System.Drawing.Point;
using Size = System.Drawing.Size;
namespace UVtools.WPF.Controls
{
public class KernelControl : UserControlEx
{
private ElementShape _selectedKernelShape = ElementShape.Rectangle;
private uint _matrixWidth = 3;
private uint _matrixHeight = 3;
private int _anchorX = -1;
private int _anchorY = -1;
private string _matrixText;
public List<ElementShape> KernelShapes { get; } = new();
public string MatrixText
{
get => _matrixText;
set => RaiseAndSetIfChanged(ref _matrixText, value);
}
public ElementShape SelectedKernelShape
{
get => _selectedKernelShape;
set => RaiseAndSetIfChanged(ref _selectedKernelShape, value);
}
public uint MatrixWidth
{
get => _matrixWidth;
set => RaiseAndSetIfChanged(ref _matrixWidth, value);
}
public uint MatrixHeight
{
get => _matrixHeight;
set => RaiseAndSetIfChanged(ref _matrixHeight, value);
}
public Size MatrixSize => new((int)_matrixWidth, (int)_matrixHeight);
public int AnchorX
{
get => _anchorX;
set => RaiseAndSetIfChanged(ref _anchorX, value);
}
public int AnchorY
{
get => _anchorY;
set => RaiseAndSetIfChanged(ref _anchorY, value);
}
public Point Anchor => new(_anchorX, _anchorY);
public KernelControl()
{
InitializeComponent();
foreach (var element in (ElementShape[])Enum.GetValues(
typeof(ElementShape)))
{
if (element == ElementShape.Custom) continue;
KernelShapes.Add(element);
}
ResetKernel();
DataContext = this;
}
private void InitializeComponent()
{
AvaloniaXamlLoader.Load(this);
}
public void GenerateKernel()
{
if (MatrixWidth <= AnchorX || MatrixHeight <= AnchorY)
{
App.MainWindow.MessageBoxError("Anchor position X/Y can't be higher or equal than size X/Y\nPlease fix the values.", "Invalid anchor position");
return;
}
using var kernel = CvInvoke.GetStructuringElement(SelectedKernelShape, MatrixSize, Anchor);
string text = string.Empty;
for (int y = 0; y < kernel.Height; y++)
{
var span = kernel.GetRowSpan<byte>(y);
var line = string.Empty;
for (int x = 0; x < span.Length; x++)
{
line += $" {span[x]}";
}
line = line.Remove(0, 1);
text += line;
if (y < kernel.Height - 1)
{
text += '\n';
}
}
MatrixText = text;
}
public void ResetKernel()
{
SelectedKernelShape = ElementShape.Rectangle;
MatrixWidth = 3;
MatrixHeight = 3;
AnchorX = -1;
AnchorY = -1;
GenerateKernel();
}
public Matrix<byte> GetMatrix()
{
if (string.IsNullOrEmpty(MatrixText))
{
App.MainWindow.MessageBoxError("Kernel can't be empty.", "Empty Kernel");
return null;
}
Matrix<byte> matrix = null;
var lines = MatrixText.Split('\n');
for (var row = 0; row < lines.Length; row++)
{
var bytes = lines[row].Trim().Split(' ');
if (row == 0)
{
matrix = new Matrix<byte>(lines.Length, bytes.Length);
}
else
{
if (matrix.Cols != bytes.Length)
{
App.MainWindow.MessageBoxError($"Row {row + 1} have invalid number of columns, the matrix must have equal columns count per line, per defined on line 1", "Invalid kernel");
matrix.Dispose();
return null;
}
}
for (int col = 0; col < bytes.Length; col++)
{
if (byte.TryParse(bytes[col], out var value))
{
matrix[row, col] = value;
}
else
{
App.MainWindow.MessageBoxError($"{bytes[col]} is a invalid number, use values from 0 to 255");
matrix.Dispose();
return null;
}
}
}
if (matrix.Cols <= AnchorX || matrix.Rows <= AnchorY)
{
App.MainWindow.MessageBoxError("Anchor position X/Y can't be higher or equal than kernel columns/rows\nPlease fix the values.", "Invalid anchor position");
matrix.Dispose();
return null;
}
return matrix;
}
public Kernel GetKernel()
{
var matrix = GetMatrix();
return matrix is null ? null : new Kernel(matrix, Anchor);
}
}
}
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