public MainForm()
{
const int LAYOUT_COLUMN_COUNT = 4;
const int LAYOUT_ROW_COUNT = 4;
const int ZERO = 0;
const int ONE = 1;
const int TWO = 2;
const int THREE = 3;
InitializeComponent();
//
// prepare presentation model, model
//
_model = new DrawingModel.Model();
_presentationModel = new PresentationModel.PresentationModel(_model);
_model._modelChanged += HandleModelChanged;
_serializer = new Serializer();
//
// _mainLayout
//
TableLayoutPanel mainLayout = new TableLayoutPanel();
mainLayout.ColumnCount = LAYOUT_COLUMN_COUNT;
mainLayout.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 33.333F));
mainLayout.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 33.333F));
mainLayout.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 33.333F));
mainLayout.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 33.333F));
mainLayout.RowCount = LAYOUT_ROW_COUNT;
mainLayout.RowStyles.Add(new RowStyle(SizeType.Absolute, 40F));
mainLayout.RowStyles.Add(new RowStyle(SizeType.Absolute, 40F));
mainLayout.RowStyles.Add(new RowStyle(SizeType.Percent, 100F));
mainLayout.RowStyles.Add(new RowStyle(SizeType.Absolute, 40F));
mainLayout.Dock = DockStyle.Fill;
Controls.Add(mainLayout);
//
// prepare line button
//
mainLayout.Controls.Add(_line, ZERO, ZERO);
_line.Enabled = false;
_line.Text = "Line";
_line.Dock = DockStyle.Fill;
_line.AutoSize = true;
_line.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
_line.Click += HandleLineButtonClick;
//
// prepare rectangle button
//
mainLayout.Controls.Add(_rectangle, ONE, ZERO);
_rectangle.Text = "Rectangle";
_rectangle.Dock = DockStyle.Fill;
_rectangle.AutoSize = true;
_rectangle.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
_rectangle.Click += HandleRectangleButtonClick;
//
// prepare rectangle button
//
mainLayout.Controls.Add(_ellipse, TWO, ZERO);
_ellipse.Text = "Ellipse";
_ellipse.Dock = DockStyle.Fill;
_ellipse.AutoSize = true;
_ellipse.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
_ellipse.Click += HandleEllipseButtonClick;
//
// prepare arrow button
//
mainLayout.Controls.Add(_arrow, THREE, ZERO);
_arrow.Text = "Arrow";
_arrow.Dock = DockStyle.Fill;
_arrow.AutoSize = true;
_arrow.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
_arrow.Click += HandleArrowButtonClick;
//
// prepare delete button
//
mainLayout.Controls.Add(_delete, ZERO, ONE);
_delete.Enabled = _presentationModel.IsClearButtonEnabled;
_delete.Text = "Delete";
_delete.Dock = DockStyle.Fill;
_delete.AutoSize = true;
_delete.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
_delete.Click += HandleDeleteButtonClick;
//
// prepare clear button
//
mainLayout.Controls.Add(_clear, ONE, ONE);
_clear.Enabled = _presentationModel.IsClearButtonEnabled;
_clear.Text = "Clear";
_clear.Dock = DockStyle.Fill;
_clear.AutoSize = true;
_clear.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
_clear.Click += HandleClearButtonClick;
//
// prepare undo button
//
mainLayout.Controls.Add(_undo, TWO, ONE);
_undo.Enabled = false;
_undo.Text = "Undo";
_undo.Dock = DockStyle.Fill;
_undo.AutoSize = true;
_undo.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
_undo.Click += HandleUndoButtonClick;
//
// prepare redo button
//
mainLayout.Controls.Add(_redo, THREE, ONE);
_redo.Enabled = false;
_redo.Text = "Redo";
_redo.Dock = DockStyle.Fill;
_redo.AutoSize = true;
_redo.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
_redo.Click += HandleRedoButtonClick;
//
// prepare canvas
//
mainLayout.Controls.Add(_canvas, ZERO, TWO);
mainLayout.SetColumnSpan(_canvas, LAYOUT_COLUMN_COUNT);
_canvas.Dock = DockStyle.Fill;
_canvas.BackColor = System.Drawing.Color.LightYellow;
_canvas.MouseDown += HandleCanvasPressed;
_canvas.MouseUp += HandleCanvasReleased;
_canvas.MouseMove += HandleCanvasMoved;
_canvas.Paint += HandleCanvasPaint;
//
// prepare upload button
//
mainLayout.Controls.Add(_upload, ZERO, THREE);
mainLayout.SetColumnSpan(_upload, LAYOUT_COLUMN_COUNT);
_upload.Enabled = _presentationModel.IsClearButtonEnabled;
_upload.Text = "Upload";
_upload.Dock = DockStyle.Fill;
_upload.AutoSize = true;
_upload.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
_upload.Click += HandleUploadButtonClick;
//
//reload saved file
//
_model.SetShapes(_serializer.ReadShapes());
}
