/*
Embroidery Reader - an application to view .pes embroidery designs

Copyright (C) 2011 Nathan Crawford
 
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.

A copy of the full GPL 2 license can be found in the docs directory.
You can contact me at http://www.njcrawford.com/contact
*/


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Reflection;
using System.Runtime.InteropServices;

namespace embroideryReader
{
    public partial class frmMain : Form
    {
        private string[] args;
        private Pen drawPen = Pens.Black;
        private Bitmap DrawArea;
        private PesFile.PesFile design;
        private EmbroideryReaderSettings settings = new EmbroideryReaderSettings();

        private const String APP_TITLE = "Embroidery Reader";


        public frmMain()
        {
            InitializeComponent();
            args = Environment.GetCommandLineArgs();
        }

        private void checkSettings()
        {
            this.BackColor = settings.backgroundColor;
            this.Width = settings.windowWidth;
            this.Height = settings.windowHeight;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            checkSettings();
            this.Text = APP_TITLE;
            if (args.Length > 1)
            {
                openFile(args[1]);
            }
        }

        public static bool checkColorFromStrings(string red, string green, string blue)
        {
            byte redByte;
            byte greenByte;
            byte blueByte;
            bool retval = false;
            if (String.IsNullOrEmpty(red) || String.IsNullOrEmpty(green) || String.IsNullOrEmpty(blue))
            {
                retval = false;
            }
            else
            {
                try
                {
                    redByte = Convert.ToByte(red);
                    greenByte = Convert.ToByte(green);
                    blueByte = Convert.ToByte(blue);
                    retval = true;
                }
                catch (Exception ex)
                {
#if DEBUG
                    Console.WriteLine(ex.Message);
#endif
                    retval = false;
                }
            }
            return retval;
        }

        public static Color makeColorFromStrings(string red, string green, string blue)
        {
            if (checkColorFromStrings(red, green, blue))
            {
                return Color.FromArgb(Convert.ToByte(red), Convert.ToByte(green), Convert.ToByte(blue));
            }
            else
            {
                return Color.Red;
            }
        }

        private void openFile(string filename)
        {
            if (!System.IO.File.Exists(filename))
            {
                return;
            }
            design = new PesFile.PesFile(filename);
            if (design.getStatus() == PesFile.statusEnum.Ready)
            {
                this.Text = System.IO.Path.GetFileName(filename) + " - " + APP_TITLE;

                DrawArea = design.designToBitmap((float)settings.threadThickness, (settings.filterStiches), (int)settings.filterStitchesThreshold);
                panel1.Width = design.GetWidth() + (int)(settings.threadThickness * 2);
                panel1.Height = design.GetHeight() + (int)(settings.threadThickness * 2);
                panel1.Invalidate();

                if (design.getFormatWarning())
                {
                    toolStripStatusLabel1.Text = "The format of this file is not completely supported";
                }
                else if (design.getColorWarning())
                {
                    toolStripStatusLabel1.Text = "Colors shown for this design may be inaccurate";
                }
                else
                {
                    toolStripStatusLabel1.Text = "";
                }
                copyToolStripMenuItem.Enabled = true;
                saveDebugInfoToolStripMenuItem.Enabled = true;
                printPreviewToolStripMenuItem.Enabled = true;
                printToolStripMenuItem.Enabled = true;
                rotateLeftToolStripMenuItem.Enabled = true;
                rotateRightToolStripMenuItem.Enabled = true;
                refreshToolStripMenuItem.Enabled = true;
                showDebugInfoToolStripMenuItem.Enabled = true;
                saveAsBitmapToolStripMenuItem.Enabled = true;
                panel2.Select();
            }
            else
            {
                string message = "An error occured while reading the file:" + Environment.NewLine + design.getLastError();
                if (design.getStatus() == PesFile.statusEnum.ParseError)
                {
                    message += Environment.NewLine + "This file is either corrupt or not a valid PES file.";
                }
                MessageBox.Show(message);
                copyToolStripMenuItem.Enabled = false;
                saveDebugInfoToolStripMenuItem.Enabled = false;
                printPreviewToolStripMenuItem.Enabled = false;
                printToolStripMenuItem.Enabled = false;
                rotateLeftToolStripMenuItem.Enabled = false;
                rotateRightToolStripMenuItem.Enabled = false;
                refreshToolStripMenuItem.Enabled = false;
                showDebugInfoToolStripMenuItem.Enabled = false;
                saveAsBitmapToolStripMenuItem.Enabled = false;
            }
        }

        private void openToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string filename;
            if (settings.lastOpenFileFolder != null)
            {
                openFileDialog1.InitialDirectory = settings.lastOpenFileFolder;
            }
            openFileDialog1.FileName = "";
            openFileDialog1.Filter = "Embroidery Files (*.pes)|*.pes|All Files (*.*)|*.*";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                filename = openFileDialog1.FileName;
                if (!System.IO.File.Exists(filename))
                {
                    return;
                }
                else
                {
                    settings.lastOpenFileFolder = System.IO.Path.GetDirectoryName(filename);
                    openFile(filename);
                }
            }
        }

        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void panel1_Paint(object sender, PaintEventArgs e)
        {
            if (DrawArea != null)
            {
                e.Graphics.DrawImage(DrawArea, 0, 0);
            }
        }

        private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
        {
            MessageBox.Show("EmbroideryReader version " + currentVersion() + ". This program reads and displays embroidery designs from .PES files.");
        }

        private void checkForUpdateToolStripMenuItem_Click(object sender, EventArgs e)
        {
            NJCrawford.UpdateCheck updater = new NJCrawford.UpdateCheck(settings.updateLocation, null, null);
            updater.waitForInfo();

            if (updater.GetLastError() != "")
            {
                MessageBox.Show("Encountered an error while checking for updates: " + updater.GetLastError());
            }
            else if (updater.IsUpdateAvailable())
            {
                if (MessageBox.Show("Version " + updater.VersionAvailable() + " was released on " + updater.getReleaseDate().ToShortDateString() + "." + Environment.NewLine + "You have version " + currentVersion() + ". Would you like to go to the Embroidery Reader website to download or find out more about the new version?", "New version available", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                {
                    try
                    {
                        System.Diagnostics.Process.Start(updater.getMoreInfoURL());
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show("An error occured while trying to open the webpage:" + Environment.NewLine + ex.ToString());
                    }
                }
            }
            else
            {
                MessageBox.Show("No updates are available right now." + Environment.NewLine + "(Latest version is " + updater.VersionAvailable() + ", you have version " + currentVersion() + ")");
            }

        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            settings.windowWidth = this.Width;
            settings.windowHeight = this.Height;
            settings.save();
        }

        private string currentVersion()
        {
            return Assembly.GetExecutingAssembly().GetName().Version.ToString();
        }

        private void saveDebugInfoToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (design != null)
            {
                try
                {
                    design.saveDebugInfo();
                }
                catch (Exception ex)
                {
                    MessageBox.Show("There was an error while saving debug info:" + Environment.NewLine + ex.ToString());
                }
            }
            else
            {
                MessageBox.Show("No design loaded.");
            }
        }

        private void preferencesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmSettingsDialog tempForm = new frmSettingsDialog();
            tempForm.settingsToModify = settings;
            if (tempForm.ShowDialog() == DialogResult.OK)
            {
                settings = tempForm.settingsToModify;
                checkSettings();
            }
        }

        private void printToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (printDialog1.ShowDialog() == DialogResult.OK)
            {
                printDocument1.Print();
            }
        }

        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            if (DrawArea != null)
            {
                float dpiX = 100;
                float dpiY = 100;
                double inchesPerMM = 0.03937007874015748031496062992126;
                e.Graphics.ScaleTransform((float)(dpiX * inchesPerMM * 0.1), (float)(dpiY * inchesPerMM * 0.1));

                e.Graphics.DrawImage(DrawArea, 30, 30);
            }
        }

        private void printPreviewToolStripMenuItem_Click(object sender, EventArgs e)
        {
            printPreviewDialog1.Document = printDocument1;
            printPreviewDialog1.ShowDialog();
        }

        private void copyToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (DrawArea != null)
            {
                Clipboard.Clear();
                Bitmap temp = new Bitmap(DrawArea.Width, DrawArea.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                Graphics tempGraph = Graphics.FromImage(temp);
                tempGraph.FillRectangle(Brushes.White, 0, 0, temp.Width, temp.Height);
                tempGraph.DrawImageUnscaled(DrawArea, 0, 0);
                tempGraph.Dispose();
                Clipboard.SetImage(temp);
            }
        }

        private void refreshToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (design != null && design.getStatus() == PesFile.statusEnum.Ready)
            {
                DrawArea = design.designToBitmap((float)settings.threadThickness, (settings.filterStiches), (int)settings.filterStitchesThreshold);
                panel1.Width = design.GetWidth() + (int)(settings.threadThickness * 2);
                panel1.Height = design.GetHeight() + (int)(settings.threadThickness * 2);
                panel1.Invalidate();

                if (design.getClassWarning())
                {
                    toolStripStatusLabel1.Text = "This file contains a class that is not yet supported";
                }
                else if (design.getFormatWarning())
                {
                    toolStripStatusLabel1.Text = "The format of this file is not completely supported";
                }
                else if (design.getColorWarning())
                {
                    toolStripStatusLabel1.Text = "Colors shown for this design may be inaccurate";
                }
                else
                {
                    toolStripStatusLabel1.Text = "";
                }
            }
        }

        private void rotateLeftToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Bitmap temp = new Bitmap(DrawArea.Height, DrawArea.Width);
            Graphics g = Graphics.FromImage(temp);
            g.RotateTransform(270.0f);
            g.DrawImage(DrawArea, -DrawArea.Width, 0);
            g.Dispose();
            DrawArea = temp;
            int temp2 = panel1.Width;
            panel1.Width = panel1.Height;
            panel1.Height = temp2;
            panel1.Invalidate();
        }

        private void rotateRightToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Bitmap temp = new Bitmap(DrawArea.Height, DrawArea.Width);
            Graphics g = Graphics.FromImage(temp);
            g.RotateTransform(90.0f);
            g.DrawImage(DrawArea, 0, -DrawArea.Height);
            g.Dispose();
            DrawArea = temp;
            int temp2 = panel1.Width;
            panel1.Width = panel1.Height;
            panel1.Height = temp2;
            panel1.Invalidate();
        }

        private void showDebugInfoToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (design != null)
            {
                try
                {
                    frmTextbox theform = new frmTextbox();
                    theform.showText(design.getDebugInfo());
                }
                catch (Exception ex)
                {
                    MessageBox.Show("There was an error while saving debug info:" + Environment.NewLine + ex.ToString());
                }
            }
            else
            {
                MessageBox.Show("No design loaded.");
            }
        }

        private void saveAsBitmapToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (DrawArea != null)
            {
                Bitmap temp = new Bitmap(DrawArea.Width, DrawArea.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);

                Graphics tempGraph = Graphics.FromImage(temp);
                tempGraph.FillRectangle(Brushes.White, 0, 0, temp.Width, temp.Height);
                tempGraph.DrawImageUnscaled(DrawArea, 0, 0);
                tempGraph.Dispose();
                saveFileDialog1.FileName = "";
                saveFileDialog1.Filter = "Bitmap (*.bmp)|*.bmp|PNG (*.png)|*.png|JPEG (*.jpg)|*.jpg|GIF (*.gif)|*.gif|TIFF (*.tif)|*.tif|All Files (*.*)|*.*";
                if (settings.lastSaveImageLocation != null)
                {
                    saveFileDialog1.InitialDirectory = settings.lastSaveImageLocation;
                }
                if (saveFileDialog1.ShowDialog() == DialogResult.OK)
                {
                    string filename = "";
                    filename = saveFileDialog1.FileName;
                    System.Drawing.Imaging.ImageFormat format;
                    switch (System.IO.Path.GetExtension(filename).ToLower())
                    {
                        case ".bmp": format = System.Drawing.Imaging.ImageFormat.Bmp; break;
                        case ".png": format = System.Drawing.Imaging.ImageFormat.Png; break;
                        case ".jpg": format = System.Drawing.Imaging.ImageFormat.Jpeg; break;
                        case ".gif": format = System.Drawing.Imaging.ImageFormat.Gif; break;
                        case ".tif": format = System.Drawing.Imaging.ImageFormat.Tiff; break;
                        default: format = System.Drawing.Imaging.ImageFormat.Bmp; break;
                    }
                    temp.Save(filename, format);
                    showStatus("Image saved", 5000);
                    settings.lastSaveImageLocation = System.IO.Path.GetDirectoryName(filename);
                }
            }
        }

        private void showStatus(string text, int msec)
        {
            toolStripStatusLabel2.Text = text;
            timer1.Interval = msec;
            timer1.Enabled = true;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            toolStripStatusLabel2.Text = "";
        }
    }
}