【Code Art / C#】文字转换成字符画

版权声明：本文为 ls9512 原创文章，转载请注明出处！ https://blog.csdn.net/ls9512/article/details/50926372

【思路】

使用GDI将文字绘制到位图上，根据位图上的像素点颜色来转换成对应矩阵位置的字符，即可得到如上图所示的文本。

以下为程序主窗口代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Drawing.Imaging;
using System.Windows.Forms;

namespace TextTool
{
    public partial class MainForm : Form
    {
        /// <summary>
        /// 构造方法
        /// </summary>
        public MainForm()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 初始化
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void MainForm_Load(object sender, EventArgs e)
        {
            //初始化信息
            this.Text = "文字转字符字工具 " + ProVersion + "   By:ls9512";
            label5.Text = "输出字号：      (" + MinFontSize.ToString() + "-" + MaxFontSize.ToString() + ")";
            //获取系统字体列表
            System.Drawing.Text.InstalledFontCollection fonts = new System.Drawing.Text.InstalledFontCollection(); 
            foreach (System.Drawing.FontFamily family in fonts.Families)
            {
                comboBoxFont.Items.Add(family.Name);
            }
            DefaultType();
        }

        //全局变量
        private string ProVersion = "v1.0";
        private int MaxFontSize = 100;
        private int MinFontSize = 1;

        /// <summary>
        /// 转换
        /// </summary>
        private void ConvertType()
        {
            try
            {
                string text = "";
                int fontsize = Convert.ToInt32(textBoxSize.Text);
                int size = (int)(fontsize * 1.0 / 3 * 4 * 1.3);
                Bitmap bmp = new Bitmap(size, size);
                Graphics g = Graphics.FromImage(bmp);
                //绘图
                g.DrawString(textBoxText.Text, new Font(comboBoxFont.SelectedItem.ToString(), fontsize, FontStyle.Regular), Brushes.Black, 0, 0);
                //读像素拼接字符
                for (int i = 0; i < size; i++)
                {
                    text += textBoxBack.Text;
                    for (int j = 0; j < size; j++)
                    {
                        Color c = bmp.GetPixel(j, i);
                        if (c.A == 0)
                        {
                            text += textBoxBack.Text;
                        }
                        else
                        {
                            text += textBoxFore.Text;
                        }
                    }
                    //换行
                    text += textBoxBack.Text;
                    text += "\r\n";
                }
                textBoxAnswer.Text = text;
                //根据输出字号改变显示大小
                if (size > 90)
                {
                    textBoxAnswer.Font = new Font("宋体", 3f);
                }
                else if (size > 60)
                {
                    textBoxAnswer.Font = new Font("宋体", 6f);
                }
                else if (size > 30)
                {
                    textBoxAnswer.Font = new Font("宋体", 8f);
                }
                else
                {
                    textBoxAnswer.Font = new Font("宋体", 11f);
                }
            }
            catch
            {
                MessageBox.Show( "发生错误,请检查输入!","提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        /// <summary>
        /// 默认输入
        /// </summary>
        private void DefaultType()
        {
            int fontindex = 0;
            foreach (string fontname in comboBoxFont.Items)
            {
                if (fontname == "宋体")
                {
                    break;
                }
                fontindex++;
            }
            comboBoxFont.SelectedIndex = fontindex;
            textBoxText.Text = "烧";
            textBoxFore.Text = "F";
            textBoxBack.Text = " ";
            textBoxSize.Text = "9";
        }

        /// <summary>
        /// 清空输入
        /// </summary>
        private void ClearType()
        {
            int fontindex = 0;
            foreach (string fontname in comboBoxFont.Items)
            {
                if (fontname == "宋体")
                {
                    break;
                }
                fontindex++;
            }
            comboBoxFont.SelectedIndex = fontindex;
            textBoxText.Text = "";
            textBoxFore.Text = "";
            textBoxBack.Text = "";
            textBoxSize.Text = "9";
        }

        /// <summary>
        /// 按钮·清空输入
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonClear_Click(object sender, EventArgs e)
        {
            ClearType();
        }

        /// <summary>
        /// 按钮·默认输入
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonDefault_Click(object sender, EventArgs e)
        {
            DefaultType();
        }

        /// <summary>
        /// 按钮·转换
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonOK_Click(object sender, EventArgs e)
        {
            ConvertType();
        }

        /// <summary>
        /// 字号·限制输入数字范围
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void textBoxSize_TextChanged(object sender, EventArgs e)
        {
            int num = Convert.ToInt32(textBoxSize.Text);
            if (num < MinFontSize) textBoxSize.Text = MinFontSize.ToString();
            if (num > MaxFontSize) textBoxSize.Text = MaxFontSize.ToString();
        }

        /// <summary>
        /// 字号·限制输入数字
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void textBoxSize_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (!(Char.IsNumber(e.KeyChar)) && e.KeyChar != (char)13 && e.KeyChar != (char)8)
            {
                e.Handled = true;
            }
        }
    }
}