using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.IO;
using System.Drawing.Imaging;

namespace PictureText
{
    public partial class FormDrawBoard : Form
    {
        #region 变量

        Bitmap originImg;
        Image finishImg;
        Graphics g;
        Point StartPoint, EndPoint, picPoint;
        Color drawColor;
        bool IsDraw;
        Font font;
        string drawText;
        string backgroundPicturePath;
        string backgroundPicturePathNext;

        RadioButton preRadioButton;
        DrawType drawtype;

        SolidBrush myBrush;//画刷

        string folderExportOnekey;

        #endregion

        #region 枚举

        enum DrawType
        {
            Rect,
            RectWhite,
            Text
        }

        #endregion

        #region 初始化

        //构造函数
        public FormDrawBoard()
        {
            InitializeComponent();

            drawColor = Config.getColor();
            bt_color.BackColor = drawColor;
            font = Config.getFont();

            folderExportOnekey = Config.getExportPath();
            if (folderExportOnekey != null)
                btnExportOnekey.Enabled = true;

            initRadioButton();
        }

        //初始化背景
        private void bt_init_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "Image file(*.jpg;*.png;*.bmp)|*.jpg;*.png;*.bmp";
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                backgroundPicturePath = ofd.FileName;
                init_Background();
                picDraw.Image = originImg;
            }
        }

        //设置背景
        void init_Background()
        {
            Image img = Image.FromFile(backgroundPicturePath);
            picDraw.Width = img.Width;
            picDraw.Height = img.Height;

            this.SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint, true);
            this.UpdateStyles();

            originImg = new Bitmap(img.Width, img.Height);
            g = Graphics.FromImage(originImg);
            g.DrawImage(img, 0, 0, img.Width, img.Height);

            finishImg = (Image)originImg.Clone();

            this.Text = "文件： " + backgroundPicturePath.Substring(backgroundPicturePath.LastIndexOf('\\') + 1);

            findNext();

            initChapter();
        }

        void findNext()
        {
            string dir = backgroundPicturePath.Substring(0, backgroundPicturePath.LastIndexOf('\\') + 1);
            string path = backgroundPicturePath.Substring(backgroundPicturePath.LastIndexOf('\\') + 1);
            string exe;
            int num;

            exe = path.Substring(path.LastIndexOf('.'));
            path = path.Replace(exe, "");
            try
            {
                num = Int32.Parse(path);
            }
            catch
            {
                bt_next.Enabled = false;
                return;
            }

            num++;
            if (!File.Exists(dir + num.ToString("D6") + exe))
            {
                bt_next.Enabled = false;
                return;
            }

            backgroundPicturePathNext = dir + num.ToString("D6") + exe;
            bt_next.Enabled = true;
        }

        private void bt_next_Click(object sender, EventArgs e)
        {
            backgroundPicturePath = backgroundPicturePathNext;
            init_Background();
            picDraw.Image = originImg;
        }

        void initChapter()
        {
            string file = backgroundPicturePath.Substring(backgroundPicturePath.LastIndexOf('\\') + 1);
            file = file.Substring(0, file.LastIndexOf('.'));
            int id = Int32.Parse(file);
            tv_chapter.Text = Database.query(id);
        }

        //初始化单选按钮
        void initRadioButton()
        {
            iterateRadioButton(this.Controls);

            preRadioButton = rb_2;
            rb_1.Checked = true;
            //RadioButton_Click(rb_name, null);
            setDrawText(rb_1);
        }

        // 遍历RadioButton
        public virtual void iterateRadioButton(Control.ControlCollection ctls)
        {
            foreach (Control control in ctls)
            {
                if (control is RadioButton)
                {
                    ((RadioButton)control).Click += new System.EventHandler(RadioButton_Click);
                }

                if (control.Controls.Count > 0)
                {
                    iterateRadioButton(control.Controls);
                }
            }
        }

        //单选按钮点击事件
        private void RadioButton_Click(object sender, EventArgs e)
        {
            RadioButton rb = (RadioButton)sender;
            if (rb.Text.Contains(" "))
                setDrawText(rb);
            else
                setRectangle(rb);
        }

        //复位
        private void bt_reset_Click(object sender, EventArgs e)
        {
            if (backgroundPicturePath == null || backgroundPicturePath == "")
                return;

            init_Background();
            picDraw.Image = originImg;
        }

        #endregion

        #region 绘图

        private void picDraw_MouseDown(object sender, MouseEventArgs e)
        {
            if (originImg == null)
                return;

            if (e.Button == MouseButtons.Left)
            {
                IsDraw = true;
                StartPoint = e.Location;
            }
        }

        private void picDraw_MouseMove(object sender, MouseEventArgs e)
        {
            if (IsDraw)
            {
                EndPoint = e.Location;

                finishImg = (Image)originImg.Clone();

                g = Graphics.FromImage(finishImg);
                g.SmoothingMode = SmoothingMode.AntiAlias; //抗锯齿  

                if (drawtype == DrawType.Text)
                {
                    if (!cb_isTransparent.Checked)
                    {
                        SizeF s = g.MeasureString(drawText, font);
                        myBrush = new SolidBrush(Color.White);
                        g.FillRectangle(myBrush, EndPoint.X, EndPoint.Y, (int)s.Width, (int)s.Height);
                    }
                    g.DrawString(drawText, font, new SolidBrush(drawColor), EndPoint);
                }
                else
                {
                    Point leftTop = new Point(StartPoint.X, StartPoint.Y);
                    int Ewidth = Math.Abs(StartPoint.X - e.X), Eheight = Math.Abs(StartPoint.Y - e.Y);
                    if (e.X < StartPoint.X)
                        leftTop.X = e.X;
                    if (e.Y < StartPoint.Y)
                        leftTop.Y = e.Y;
                    Rectangle rect = new Rectangle(leftTop, new Size(Ewidth, Eheight));

                    if (drawtype == DrawType.Rect)
                    {
                        myBrush = new SolidBrush(drawColor);
                        g.FillRectangle(myBrush, rect);
                    }
                    else
                    {
                        myBrush = new SolidBrush(Color.White);
                        g.FillRectangle(myBrush, rect);
                    }
                }

                picPoint = EndPoint;

                reDraw();
            }
        }

        private void picDraw_MouseUp(object sender, MouseEventArgs e)
        {
            IsDraw = false;
            originImg = (Bitmap)finishImg;

            //此句的作用是避免窗体最小化后还原窗体时，画布内容“丢失”  
            //其实没有丢失，只是没刷新而已，读者可以在画布任意处作画，便可还原画布内容  
            picDraw.Image = originImg;
        }

        //重绘绘图区（二次缓冲技术）  
        private void reDraw()
        {
            Graphics graphics = picDraw.CreateGraphics();
            graphics.DrawImage(finishImg, new Point(0, 0));
            graphics.Dispose();
        }

        #endregion

        #region 设置

        //设置颜色
        private void bt_color_Click(object sender, EventArgs e)
        {
            ColorDialog cd = new ColorDialog();
            cd.FullOpen = true;
            cd.Color = drawColor;
            if (cd.ShowDialog() == DialogResult.OK)
            {
                setColor(cd.Color);
            }
        }

        //设置字体
        private void bt_font_Click(object sender, EventArgs e)
        {
            FontDialog fd = new FontDialog();
            fd.Font = font;
            if (fd.ShowDialog() == DialogResult.OK)
            {
                font = fd.Font;
            }
        }

        //设置文字
        void setDrawText(RadioButton rb)
        {
            int index = rb.Text.LastIndexOf(" ");
            setColor(rb.Text.Substring(index));
            drawText = rb.Text.Substring(index + 1);
            drawtype = DrawType.Text;
            setRadioButtonColor(rb);
        }

        //设置矩形
        void setRectangle(RadioButton rb)
        {
            if (rb.Text == "矩形")
                drawtype = DrawType.Rect;
            else if (rb.Text == "白色矩形")
                drawtype = DrawType.RectWhite;
            setRadioButtonColor(rb);
        }

        //设置单选按钮颜色
        void setRadioButtonColor(RadioButton rb)
        {
            preRadioButton.ForeColor = Color.Black;
            rb.ForeColor = Color.Red;
            preRadioButton = rb;
        }

        //设置导出目录
        private void setDir_Click(object sender, EventArgs e)
        {
            FormOnekey f = new FormOnekey(folderExportOnekey);
            f.StartPosition = FormStartPosition.CenterScreen;
            f.Owner = this;
            f.Show();
        }

        //设置导出目录，外部调用
        public void setFolderExportOnekey(string path)
        {
            if (path == "")
                return;

            folderExportOnekey = path;
            btnExportOnekey.Enabled = true;
            Config.saveExportPath(path);
        }

        #endregion

        #region 保存

        //保存单个图片
        private void btnExport_Click(object sender, EventArgs e)
        {
            if (originImg == null)
            {
                MessageBox.Show("不存在背景图片");
                return;
            }

            SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "jpg|*.jpg|png|*.png|bmp|*.bmp";
            if (sfd.ShowDialog() == DialogResult.OK)
            {
                finishImg.Save(sfd.FileName);
            }
            MessageBox.Show("保存成功");
        }

        //保存配置
        private void bt_saveconfig_Click(object sender, EventArgs e)
        {
            Config.saveFont(font);
            Config.saveColor(drawColor);

            MessageBox.Show("保存成功");
        }

        // 一键保存图片
        private void btnExportOnekey_Click(object sender, EventArgs e)
        {
            if (originImg == null)
            {
                MessageBox.Show("不存在背景图片");
                return;
            }

            string path = folderExportOnekey;
            path += backgroundPicturePath.Substring(backgroundPicturePath.LastIndexOf('\\'));
            finishImg.Save(path);
            MessageBox.Show("保存成功");
        }

        #endregion

        #region  颜色

        void setColor(Color c)
        {
            drawColor = c;
            bt_color.BackColor = c;
        }

        void setColor(string text)
        {
            setColor(getTextColor(text));
        }

        private void Color_Click(object sender, EventArgs e)
        {
            PictureBox pb = (PictureBox)sender;
            setColor(pb.BackColor);
        }

        Color getTextColor(string text)
        {
            text = text.Trim();

            if (isTextEquals(text, "形容词", "定语"))
                return ColorTranslator.FromHtml("#912BD6");

            if (isTextEquals(text, "专有名词"))
                return ColorTranslator.FromHtml("#329CBF");

            if (isTextEquals(text, "名词", "偏次", "同位语", "主语", "代主语", "名词句"))
                return ColorTranslator.FromHtml("#6F9FDB");

            if (isTextEquals(text, "介词", "介词短语", "受词"))
                return ColorTranslator.FromHtml("#D73434");

            if (isTextEquals(text, "牵挂","否定虚词", "字母"))
                return ColorTranslator.FromHtml("#F08229");

            if (isTextEquals(text, "动词", "动词句", "状语"))
                return ColorTranslator.FromHtml("#45D040");

            if (isTextEquals(text, "连词", "另起虚词"))
                return ColorTranslator.FromHtml("#1903E9");

            if (isTextEquals(text, "人称代词", "谓语", "宾语"))
                return ColorTranslator.FromHtml("#637B93");

            if (isTextEquals(text, "并列语", "强调"))
                return ColorTranslator.FromHtml("#D8019C");

            if (isTextEquals(text, "关系代词", "关系子句"))
                return ColorTranslator.FromHtml("#8B7B03");

            if (isTextEquals(text, "指示代词"))
                return ColorTranslator.FromHtml("#C9AD58");

            //  

            return drawColor;
        }

        //字符串对比
        public bool isTextEquals(string data, params string[] texts)
        {
            foreach (string t in texts)
            {
                if (data == t)
                    return true;
            }
            return false;
        }

        #endregion

        #region 拖拽操作

        private void Form_DragDrop(object sender, DragEventArgs e)
        {
            string path = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString();

            if (!PICTURE.IsImage(path))
            {
                MessageBox.Show("不是图片");
                return;
            }

            backgroundPicturePath = path;
            init_Background();
            picDraw.Image = originImg;

        }

        private void Form_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
                e.Effect = DragDropEffects.Link;
            else e.Effect = DragDropEffects.None;
        }

        #endregion



    }
}