UIUtilities.cs

using System.Windows.Forms;
using System;
using System.Drawing;
using System.Runtime.InteropServices;

namespace Instagram
{
    class UIUtilities
    {
        public const int WM_NCLBUTTONDOWN = 0xA1;
        public const int HT_CAPTION = 0x2;
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        public static extern bool ReleaseCapture();
        public PictureBox btn_Close, btn_Minimize, btn_Maximize;
        public Panel sidePanel;
        private readonly bool lightModeOn;
        private bool isMaximized;
        private readonly int formWidth, formHeight;
        private readonly Main mainForm;
        private readonly Form formRef;

        public UIUtilities(bool formLightModeOn)
        {
            lightModeOn = formLightModeOn;
        }

        public UIUtilities(Form f, bool formLightModeOn)
        {
            formWidth = f.Width;
            formHeight = f.Height;
            lightModeOn = formLightModeOn;
            formRef = f;
            if (f.WindowState == FormWindowState.Normal)
                isMaximized = false;
            else
                isMaximized = true;
            Initialize_Top_Left_Buttons();
        }

        public UIUtilities(Main f, bool formLightModeOn)
        {
            formWidth = f.Width;
            formHeight = f.Height;
            lightModeOn = formLightModeOn;
            mainForm = f;
            if (f.WindowState == FormWindowState.Normal)
                isMaximized = false;
            else
                isMaximized = true;
            Initialize_Top_Left_Buttons();
            Initialize_Side_Panel();
        }

        private void Initialize_Top_Left_Buttons()
        {
            int x = formWidth, btn_Width = 45, btn_Height = 20;
            string location;
            Color backColor, hoverColor;
            location = Return_UI_Location();
            if (lightModeOn)
            {
                backColor = Color.FromArgb(242, 242, 242);
                hoverColor = Color.FromArgb(217, 217, 217);
            }
            else
            {
                backColor = Color.FromArgb(43, 43, 43);
                hoverColor = Color.FromArgb(57, 57, 57);
            }
            // Initializing
            btn_Close = Create_Button("close", new int[] { btn_Width, btn_Height }, new int[] { x - btn_Width, 0 }, backColor, false);
            btn_Maximize = Create_Button("maximize", new int[] { btn_Width, btn_Height }, new int[] { x - (btn_Width * 2), 0 }, backColor, false);
            btn_Minimize = Create_Button("minimize", new int[] { btn_Width, btn_Height }, new int[] { x - (btn_Width * 3), 0 }, backColor, false);
            // Setting up special settings
            btn_Close.MouseClick += new MouseEventHandler((o, a) => Application.Exit());
            btn_Close.MouseHover += new EventHandler((o, a) => btn_Close.BackColor = Color.Red);
            btn_Close.MouseLeave += new EventHandler((o, a) => btn_Close.BackColor = backColor);
            btn_Maximize.MouseClick += new MouseEventHandler((o, a) =>
            {
                try
                {
                    if (!isMaximized)
                    {
                        formRef.WindowState = FormWindowState.Maximized;
                        isMaximized = true;
                    }
                    else
                    {
                        formRef.WindowState = FormWindowState.Normal;
                        isMaximized = false;
                    }

                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }
            );
            btn_Maximize.MouseHover += new EventHandler((o, a) => btn_Maximize.BackColor = hoverColor);
            btn_Maximize.MouseLeave += new EventHandler((o, a) => btn_Maximize.BackColor = backColor);
            btn_Minimize.MouseClick += new MouseEventHandler((o, a) =>
            {
                formRef.WindowState = FormWindowState.Minimized;
            }
            );
            btn_Minimize.MouseHover += new EventHandler((o, a) => btn_Minimize.BackColor = hoverColor);
            btn_Minimize.MouseLeave += new EventHandler((o, a) => btn_Minimize.BackColor = backColor);
        }

        public void Initialize_Side_Panel()
        {
            int y = formHeight / 2 - 110, btn_Width = 65, btn_Height = 30;
            Color panelBackgroundColor;
            if (!lightModeOn)
                panelBackgroundColor = Color.FromArgb(43, 43, 43);
            else
                panelBackgroundColor = Color.FromArgb(242, 242, 242);
            // Initializing
            PictureBox homeBtn, searchBtn, chatBtn, addBtn, activityBtn, accountBtn;
            sidePanel = Create_Panel(new int[] { btn_Width, formHeight }, new int[] { 0, 0 }, panelBackgroundColor);
            homeBtn = Create_Button("home", new int[] { btn_Width, btn_Height - 5 }, new int[] { 0, y + (int)Math.Round(btn_Height * 0.1) }, panelBackgroundColor);
            chatBtn = Create_Button("chat", new int[] { btn_Width, (btn_Height - 4) }, new int[] { -1, (int)Math.Round(y + btn_Height * 1.4) }, panelBackgroundColor);
            searchBtn = Create_Button("search", new int[] { btn_Width, (btn_Height - 4) }, new int[] { 0, (int)Math.Round(y + btn_Height * 2.7) }, panelBackgroundColor);
            addBtn = Create_Button("plus", new int[] { btn_Width, btn_Height + 10 }, new int[] { 0, (y + (int)Math.Round((btn_Height * 3.9), MidpointRounding.AwayFromZero)) }, panelBackgroundColor);
            activityBtn = Create_Button("history", new int[] { btn_Width, btn_Height + 5 }, new int[] { 0, (y + (int)Math.Round((btn_Height * 5.7), MidpointRounding.AwayFromZero)) }, panelBackgroundColor);
            accountBtn = Create_Button("account", new int[] { btn_Width, btn_Height - 4 }, new int[] { 0, (y + (int)Math.Round((btn_Height * 8.5), MidpointRounding.AwayFromZero)) }, panelBackgroundColor);
            homeBtn.MouseClick += new MouseEventHandler((o, a) =>
            {
                mainForm.Initialize_Form(0);
            }
            );
            chatBtn.MouseClick += new MouseEventHandler((o, a) =>
            {
                mainForm.Initialize_Form(1);
            }
            );
            searchBtn.MouseClick += new MouseEventHandler((o, a) =>
            {
                mainForm.Initialize_Form(2);
            }
            );
            addBtn.MouseClick += new MouseEventHandler((o, a) =>
            {
                mainForm.Initialize_Form(3);
            }
            );
            activityBtn.MouseClick += new MouseEventHandler((o, a) =>
            {
                mainForm.Initialize_Form(4);
            }
            );
            accountBtn.MouseClick += new MouseEventHandler((o, a) =>
            {
                mainForm.Initialize_Form(5);
            }
            );
            sidePanel.Controls.Add(homeBtn);
            sidePanel.Controls.Add(chatBtn);
            sidePanel.Controls.Add(searchBtn);
            sidePanel.Controls.Add(addBtn);
            sidePanel.Controls.Add(activityBtn);
            sidePanel.Controls.Add(accountBtn);
        }


        public Panel Create_Panel(int[] size, int[] location, Color backColor)
        {
            Panel panel = new Panel();
            panel.Width = size[0];
            panel.Height = size[1];
            panel.Location = new System.Drawing.Point(location[0], location[1]);
            panel.BackColor = backColor;
            return panel;
        }

        public TextBox Create_TextBox(int[] location, int[] size)
        {
            TextBox textBox = new TextBox();
            if (!lightModeOn)
            {
                textBox.BackColor = Color.FromArgb(43, 43, 43);
                textBox.ForeColor = Color.FromArgb(255, 255, 255);
            }
            else
            {
                textBox.BackColor = Color.FromArgb(242, 242, 242);
                textBox.ForeColor = Color.FromArgb(0, 0, 0);
            }
            textBox.Font = new Font("Roboto", 12);
            textBox.Location = new System.Drawing.Point(location[0], location[1]);
            textBox.Width = size[0];
            textBox.Height = size[1];
            return textBox;
        }

        public string Return_UI_Location()
        {
            if (lightModeOn)
                return Environment.CurrentDirectory + @"\Assets\Light Mode\UI Icons\";
            else
                return Environment.CurrentDirectory + @"\Assets\Dark Mode\UI Icons\";
        }

        public PictureBox Create_Button(string name, int[] size, int[] location, Color backColor, bool add_effects = true)
        {
            PictureBox btn = new PictureBox();
            btn.Width = size[0];
            btn.Height = size[1];
            btn.ImageLocation = Return_UI_Location() + name + ".png";
            btn.Location = new System.Drawing.Point(location[0], location[1]);
            btn.SizeMode = PictureBoxSizeMode.Zoom;
            btn.BringToFront();
            if (add_effects)
            {
                btn.MouseHover += new EventHandler((o, a) =>
                {
                    btn.Image.Dispose();
                    btn.Image = Image.FromFile(Environment.CurrentDirectory + @"\Assets\Selected Mode\" + name + ".png");
                });
                btn.MouseLeave += new EventHandler((o, a) =>
                {
                    btn.Image.Dispose();
                    btn.Image = Image.FromFile(Return_UI_Location() + name + ".png");
                });
            }
            btn.BackColor = backColor;
            return btn;
        }


        public void MouseDown(IntPtr obj, object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                ReleaseCapture();
                SendMessage(obj, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
            }
        }

        public PictureBox Get_CloseBtn()
        {
            return btn_Close;
        }

        public PictureBox Get_MaximizeBtn()
        {
            return btn_Maximize;
        }

        public PictureBox Get_MinimizeBtn()
        {
            return btn_Minimize;
        }
        public Panel Get_Panel()
        {
            return sidePanel;
        }
        [DllImport("Gdi32.dll", EntryPoint = "CreateRoundRectRgn")]
        private static extern IntPtr CreateRoundRectRgn
       (
           int nLeftRect,     // x-coordinate of upper-left corner
           int nTopRect,      // y-coordinate of upper-left corner
           int nRightRect,    // x-coordinate of lower-right corner
           int nBottomRect,   // y-coordinate of lower-right corner
           int nWidthEllipse, // height of ellipse
           int nHeightEllipse // width of ellipse
       );

        public void Create_Rounded_Corners()
        {
            mainForm.FormBorderStyle = FormBorderStyle.None;
            mainForm.Region = System.Drawing.Region.FromHrgn(CreateRoundRectRgn(0, 0, mainForm.Width, mainForm.Height, 20, 20));
        }

        public void Dispose_UI_Components()
        {
            sidePanel.Dispose();
            btn_Close.Dispose();
            btn_Maximize.Dispose();
            btn_Minimize.Dispose();
        }
    }
}