TimerApp/RestForm.cs

using System;
using System.Drawing;
using System.Windows.Forms;

namespace TimerApp
{
    public class RestForm : Form
    {
        private Label lblMessage = null!;
        private Label lblTimer = null!;
        private Button btnSkip = null!;

        public event EventHandler? SkipRequested;

        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams cp = base.CreateParams;
                // Turn on WS_EX_TOOLWINDOW style bit (0x80)
                // 这可以防止窗口出现在 Alt-Tab 列表中，并减少任务栏闪烁风险
                cp.ExStyle |= 0x80;
                return cp;
            }
        }

        public RestForm()
        {
            InitializeComponent();
        }

        private void InitializeComponent()
        {
            this.lblMessage = new System.Windows.Forms.Label();
            this.lblTimer = new System.Windows.Forms.Label();
            // this.btnSkip = new RoundedButton(); // Removed custom button
            this.SuspendLayout();

            // ... (keep form settings)
            //
            // Form 设置
            //
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.StartPosition = FormStartPosition.Manual;
            this.Location = new System.Drawing.Point(-32000, -32000); // 初始位置在屏幕外
            this.TopMost = true;
            this.BackColor = System.Drawing.Color.Black;
            this.Opacity = 0; // 初始隐藏，避免闪烁
            this.ShowInTaskbar = false;
            this.Name = "RestForm";
            this.Text = "Rest Now";
            this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.DoubleBuffer | ControlStyles.ResizeRedraw, true);

            //
            // lblMessage
            //
            this.lblMessage.AutoSize = false;
            this.lblMessage.Font = new System.Drawing.Font("Microsoft YaHei UI", 36F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
            this.lblMessage.ForeColor = System.Drawing.Color.White;
            this.lblMessage.Location = new System.Drawing.Point(100, 100);
            this.lblMessage.Name = "lblMessage";
            // 初始大小，会在CenterControls中动态调整
            this.lblMessage.Size = new System.Drawing.Size(800, 100);
            this.lblMessage.TabIndex = 0;
            this.lblMessage.Text = "休息一下，看看远方";
            this.lblMessage.TextAlign = ContentAlignment.MiddleCenter;

            //
            // lblTimer
            //
            this.lblTimer.AutoSize = false;
            this.lblTimer.Font = new System.Drawing.Font("Segoe UI Light", 72F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
            this.lblTimer.ForeColor = System.Drawing.Color.LightGreen;
            this.lblTimer.Location = new System.Drawing.Point(100, 200);
            this.lblTimer.Name = "lblTimer";
            // 初始大小，会在CenterControls中动态调整
            this.lblTimer.Size = new System.Drawing.Size(400, 180);
            this.lblTimer.TabIndex = 1;
            this.lblTimer.Text = "--:--";
            this.lblTimer.TextAlign = ContentAlignment.MiddleCenter;

            //
            // btnSkip
            //
            this.btnSkip = new System.Windows.Forms.Button();
            this.btnSkip.BackColor = System.Drawing.Color.FromArgb(63, 63, 70);
            this.btnSkip.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
            this.btnSkip.FlatAppearance.BorderSize = 0;
            this.btnSkip.FlatAppearance.MouseOverBackColor = System.Drawing.Color.FromArgb(80, 80, 90);
            this.btnSkip.Font = new System.Drawing.Font("Microsoft YaHei UI", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
            this.btnSkip.ForeColor = System.Drawing.Color.White;
            this.btnSkip.Location = new System.Drawing.Point(100, 400);
            this.btnSkip.Name = "btnSkip";
            this.btnSkip.Size = new System.Drawing.Size(120, 46);
            this.btnSkip.TabIndex = 2;
            this.btnSkip.Text = "跳过";
            this.btnSkip.UseVisualStyleBackColor = false;
            this.btnSkip.Cursor = System.Windows.Forms.Cursors.Hand;
            this.btnSkip.Click += new System.EventHandler(this.btnSkip_Click);

            // Add controls
            this.Controls.Add(this.btnSkip);
            this.Controls.Add(this.lblMessage);
            this.Controls.Add(this.lblTimer);

            this.btnSkip.BringToFront();

            this.Load += new System.EventHandler(this.RestForm_Load);
            this.Resize += new System.EventHandler(this.RestForm_Resize);

            this.ResumeLayout(false);
            this.PerformLayout();
        }

        private void RestForm_Load(object? sender, EventArgs e)
        {
            CenterControls();
        }

        protected override void OnVisibleChanged(EventArgs e)
        {
            base.OnVisibleChanged(e);
            if (this.Visible)
            {
                // 移回屏幕并最大化
                this.Location = new Point(0, 0);
                this.WindowState = FormWindowState.Maximized;
                this.Refresh();
                
                // 延迟显示，确保布局调整完成
                System.Windows.Forms.Timer t = new System.Windows.Forms.Timer();
                t.Interval = 50;
                t.Tick += (s, ev) => {
                    t.Stop();
                    t.Dispose();
                    this.Opacity = 0.90;
                };
                t.Start();
            }
        }

        private void RestForm_Resize(object? sender, EventArgs e)
        {
            CenterControls();
        }

        private void CenterControls()
        {
            // 简单的居中计算
            int centerX = this.Width / 2;
            int centerY = this.Height / 2;

            // Equal spacing logic
            int spacing = 80;

            // 使用足够大的固定大小，确保文本完整显示
            // 使用屏幕宽度的85%作为最大宽度，确保在不同分辨率下都能完整显示
            int maxWidth = (int)(this.Width * 0.85);

            // 消息文本：使用足够大的尺寸
            lblMessage.Size = new Size(maxWidth, 120);

            // 时间文本：使用足够大的尺寸（72pt字体需要较大空间）
            lblTimer.Size = new Size(maxWidth, 200);

            // Timer Center = centerY
            lblTimer.Location = new Point(centerX - lblTimer.Width / 2, centerY - lblTimer.Height / 2);

            // Message above Timer
            lblMessage.Location = new Point(centerX - lblMessage.Width / 2, lblTimer.Top - spacing - lblMessage.Height);

            // Button below Timer
            btnSkip.Location = new Point(centerX - btnSkip.Width / 2, lblTimer.Bottom + spacing);
        }


        public void UpdateTime(TimeSpan remaining)
        {
            if (lblTimer.InvokeRequired)
            {
                lblTimer.BeginInvoke(new Action<TimeSpan>(UpdateTime), remaining);
            }
            else
            {
                // 只更新文本，不重新居中，避免闪烁
                // 由于lblTimer已设置固定大小，文本居中显示，不会因为文本变化而改变位置
                lblTimer.Text = $"{remaining.Minutes:D2}:{remaining.Seconds:D2}";
            }
        }

        private void btnSkip_Click(object? sender, EventArgs e)
        {
            SkipRequested?.Invoke(this, EventArgs.Empty);
            this.Close();
        }
    }
}