Azmyth.Editor.Grid.Grid_Paint C# (CSharp) Method

        private void Grid_Paint(object sender, PaintEventArgs e)
        {
            int width = Width;
                int height = Height;

                int rows = height / m_cellSize;
                int cols = width / m_cellSize;

                Graphics graphics = e.Graphics;
                Rectangle client = ClientRectangle;
                client.Inflate(200, 200);

                foreach (Point p in m_cells.Keys)
                {
                    if (client.Contains(new System.Drawing.Point(p.X, p.Y)))
                    {
                        int r, g, b;

                        r = m_cells[p].R;
                        g = m_cells[p].G;
                        b = m_cells[p].B;

                        if(m_invertScale)
                        {
                            r = 255 - r;
                            b = 255 - b;
                            g = 255 - g;
                        }

                        Color cellColor = Color.FromArgb(r, g, b);
                        graphics.FillRectangle(new SolidBrush(cellColor), new Rectangle(m_offsetX + (p.X * m_cellSize), m_offsetY + (p.Y * m_cellSize), m_cellSize, m_cellSize));

                    }
                }

                if(m_showGrid)
                {
                    for (int index = 0; index <= rows+1; index++)
                    {
                        int yPos = (index * m_cellSize) + (m_offsetY % m_cellSize);

                        graphics.DrawLine(m_gridPen, new System.Drawing.Point(0, yPos), new System.Drawing.Point(width, yPos));
                    }

                    for (int index = 0; index <= cols; index++)
                    {
                        int xPos = (index * m_cellSize) + (m_offsetX % m_cellSize);

                        graphics.DrawLine(m_gridPen, new System.Drawing.Point(xPos, 0), new System.Drawing.Point(xPos, width));
                    }
                }

                graphics.DrawRectangle(new Pen(Brushes.Red, 3), m_offsetX, m_offsetY, m_cellSize * bounds.Width, m_cellSize * bounds.Height);

                if (client.Contains(new System.Drawing.Point(m_offsetX, m_offsetY)))
                {
                    graphics.DrawString("(0, 0) (" + m_cellOffsetX + ", " + m_cellOffsetY + ")",
                            new Font("Arial", 20), Brushes.Red,
                            new Point(m_offsetX, m_offsetY));

                    graphics.DrawEllipse(Pens.Red, new Rectangle(new Point(m_offsetX - 4, m_offsetY - 4), new Size(8, 8)));
                }

                if (client.Contains(new System.Drawing.Point(m_offsetX + (bounds.Width * m_cellSize), m_offsetY + (bounds.Height * m_cellSize))))
                {
                    graphics.DrawString("(" + bounds.Width + ", " + bounds.Height + ")",
                            new Font("Arial", 20), Brushes.Red,
                            new Point(m_offsetX + (bounds.Width * m_cellSize), m_offsetY + (bounds.Height * m_cellSize)));

                    graphics.DrawEllipse(Pens.Red, new Rectangle(new Point((m_offsetX + (bounds.Width * m_cellSize)) - 4, (m_offsetY + (bounds.Height * m_cellSize)) - 4), new Size(8, 8)));
                }

                int selectedSizeX = selection.Width / m_cellSize;
                int selectedSizeY = selection.Height / m_cellSize;

                graphics.DrawString("(" + m_selectedX + "," + m_selectedY + ") (" + selectedSizeX + ", " + selectedSizeY + ")",
                        new Font("Arial", 20), Brushes.Red,
                        new Point(0, this.Height - 35));

                graphics.DrawRectangle(m_selectionPen, selection);
        }