StonehearthEditor.NetWorthVisualizer.canvas_Paint C# (CSharp) Method

        private void canvas_Paint(object sender, PaintEventArgs e)
        {
            Graphics graphics = e.Graphics;
            int cellSizeZoomed = (int)Math.Round(kCellSize * mZoom);

            int maxCols = Math.Min(mMaxNetWorth, kMaxRows);
            int maxRows = Math.Min(mItemCount, kMaxRows);
            int canvasWidth = maxCols * (cellSizeZoomed + 1);
            int canvasHeightLimit = maxRows * (cellSizeZoomed + 1);
            int canvasHeight = (maxRows * (cellSizeZoomed + 1)) + kBottomOffset;

            canvas.Width = canvasWidth;
            canvas.Height = canvasHeight;

            for (int i = 0; i < maxCols; ++i)
            {
                if (mZoom > 0.25f || (mZoom == 0.25f && ((i + 1) % 10) == 0))
                {
                    string colName = "" + (i + 1);
                    Point position = new Point(i * cellSizeZoomed, canvasHeight - kStringOffset);
                    graphics.DrawString(colName, SystemFonts.DefaultFont, Brushes.Black, position);
                }
                else
                {
                }

                List<JsonFileData> list;
                if (mNetWorthValues.TryGetValue(i + 1, out list))
                {
                    int count = Math.Min(maxRows, list.Count);
                    for (int j = 0; j < count; j++)
                    {
                        JsonFileData data = list[j];
                        string imageFile = FindImageForFile(data);
                        if (string.IsNullOrEmpty(imageFile))
                        {
                            Console.WriteLine("file " + data.FileName + " has no icon!");
                        }
                        else
                        {
                            Image thumbnail = ThumbnailCache.GetThumbnail(imageFile);

                            int ylocation = canvasHeight - ((j + 1) * cellSizeZoomed) - maxRows - kBottomOffset - 1;
                            Rectangle location = new Rectangle(i * cellSizeZoomed, ylocation, cellSizeZoomed, cellSizeZoomed);
                            graphics.DrawImage(thumbnail, location);

                            if (data.RecommendedMaxNetWorth > 0)
                            {
                                int cost = i + 1;
                                bool shouldWarn = false;
                                JToken sellable = data.Json.SelectToken("entity_data.stonehearth:net_worth.shop_info.sellable");
                                if (sellable != null && sellable.ToString() == "False")
                                {
                                    shouldWarn = true;
                                }

                                if (cost < data.RecommendedMinNetWorth * kMinRecommendedMultiplier)
                                {
                                    shouldWarn = true;
                                }

                                if (cost > ((data.RecommendedMaxNetWorth * kMaxRecommendedMultiplier) + 1))
                                {
                                    shouldWarn = true;
                                }

                                if (shouldWarn)
                                {
                                    Pen semiRed = new Pen(Color.FromArgb(100, Color.Red));
                                    graphics.FillRectangle(semiRed.Brush, location);
                                }
                            }
                        }
                    }
                }
            }

            for (int i = 0; i < canvasWidth; i += cellSizeZoomed)
            {
                graphics.DrawLine(System.Drawing.Pens.Black, new Point(i, 0), new Point(i, canvasHeightLimit));
            }

            for (int j = 0; j < canvasHeightLimit; j += cellSizeZoomed)
            {
                graphics.DrawLine(System.Drawing.Pens.Black, new Point(0, j), new Point(canvasWidth, j));
            }
        }