C#指定圖片新增文字
阿新 • • 發佈:2019-02-03
using System.Drawing; using System.IO; using UnityEngine; public class TestImage : MonoBehaviour { private string filePath; // Use this for initialization void Start() { filePath = @Application.streamingAssetsPath + "/test.jpg"; AddTextToImg("臥槽啊!小賤!"); } // Update is called once per frame void Update() { } /// <summary> /// 指定圖片新增指定文字 /// </summary> /// <param name="text">新增的文字</param> /// <param name="picname">生成檔名</param> private void AddTextToImg(string text) { //判斷指定圖片是否存在 if (!File.Exists(filePath)) { throw new FileNotFoundException("The file don't exist!"); } if (text == string.Empty) { return; } Image image = Image.FromFile(filePath); Bitmap bitmap = new Bitmap(image, image.Width, image.Height); System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap); //字型大小 float fontSize = 40.0f; //文字的長度 float textWidth = text.Length * fontSize; //下面定義一個矩形區域,以後在這個矩形裡畫上白底黑字 float rectX = 120; float rectY = 200; float rectWidth = text.Length * (fontSize + 40); float rectHeight = fontSize + 40; //宣告矩形域 RectangleF textArea = new RectangleF(rectX, rectY, rectWidth, rectHeight); //定義字型 System.Drawing.Font font = new System.Drawing.Font("微軟雅黑", fontSize, System.Drawing.FontStyle.Bold); //font.Bold = true; //白筆刷,畫文字用 Brush whiteBrush = new SolidBrush(System.Drawing.Color.DodgerBlue); //黑筆刷,畫背景用 //Brush blackBrush = new SolidBrush(Color.Black); //g.FillRectangle(blackBrush, rectX, rectY, rectWidth, rectHeight); g.DrawString(text, font, whiteBrush, textArea); //輸出方法一:將檔案生成並儲存到C盤 string path = @Application.streamingAssetsPath + "/test2.jpg"; bitmap.Save(path, System.Drawing.Imaging.ImageFormat.Jpeg); g.Dispose(); bitmap.Dispose(); image.Dispose(); } }