superstar_v2/PrimaryFormParts/SongSearch/PrimaryForm.SongSearch.WordCountSearch.cs

using System.IO;
using System.Drawing.Imaging;

namespace DualScreenDemo
{
    public partial class PrimaryForm
    {
        private PictureBox pictureBoxWordCountSongs;
        private Button[] numberWordCountButtonsForSongs;
        private Button modifyButtonWordCountSongs;
        private Button clearButtonWordCountSongs;
        private Button closeButtonWordCountSongs;
        private Button enterButtonWordCountSongs;
        private RichTextBox inputBoxWordCountSongs;


        // 初始化所有與注音歌手相關的按鈕，包括語音符號按鈕、特殊按鈕及輸入框。
        private void InitializeButtonsForWordCountSongs()
        {
            // 初始化所有語音按鈕
            InitializeNumberWordCountSongsButtons(pictureBoxWordCountSongs,NumberWordCountSongsButton_Click);
            // 初始化注音歌手的輸入框
            InitializeInputBoxWordCountSongs();
            // 初始化下排功能按鈕
            InitializeSongWordButton();
        }

        /// 初始化並設置語音按鈕的相關資料，包括符號、座標與圖片等。
        private void InitializeNumberWordCountSongsButtons(Control control, EventHandler handler)
        {
            // 初始化語音按鈕陣列，總共有 10 個按鈕
            numberWordCountButtonsForSongs = new Button[10];

            // 設置上排數字按鈕
            int x = 10;
            for (int i = 0; i < 5; i++)
            {
                CreateNumBtnWordCountButton(i, x, 120, control, handler);
                x += 82;
            }
            // 設置下排數字按鈕
            x = 10;
            for (int i = 5; i < 10; i++)
            {
                CreateNumBtnWordCountButton(i, x, 197, control, handler);
                x += 82;
            }
        }

        private void CreateNumBtnWordCountButton(int index, int x, int y,Control control,EventHandler handler)
        {
            try
            {
                // 加載配置數據
                var data = LoadBtnConfigData();
                // 創建語音按鈕並設置其屬性
                numberWordCountButtonsForSongs[index] = new Button
                {
                    Name = $"numberWordCountButton_{numberWordCountSymbols[index]}", // 按鈕名稱設為語音符號名稱
                };

                ConfigureButton(numberWordCountButtonsForSongs[index], x, y, 72, 67,
                    new Bitmap(Path.Combine(serverPath, data["NumberWordCountButtonImages"][$"button{index}_normal"])),
                    new Bitmap(Path.Combine(serverPath, data["NumberWordCountButtonImages"][$"button{index}_mouseOver"])),
                    new Bitmap(Path.Combine(serverPath, data["NumberWordCountButtonImages"][$"button{index}_mouseDown"])),
                    handler);

                // 設置按鈕的 Tag 屬性為對應的語音符號
                numberWordCountButtonsForSongs[index].Tag = numberWordCountSymbols[index];

                // 將按鈕添加到表單的控制項集合中
                control.Controls.Add(numberWordCountButtonsForSongs[index]);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error creating button at index {index}: {ex.Message}");
            }
        }

        /// 初始化下排按鈕，設定按鈕的坐標、圖片和點擊事件。
        private void InitializeSongWordButton()
        {
            // 加載配置數據
            var data = LoadBtnConfigData();


            // 初始化「清除」按鈕
            clearButtonWordCountSongs = new Button { Name = "btnClearWordCountSongs" };
            ConfigureButton(clearButtonWordCountSongs, 55, 274, 72, 67,
                new Bitmap(Path.Combine(serverPath, data["ClearButtonImagesWordCount"]["normal"])),
                new Bitmap(Path.Combine(serverPath, data["ClearButtonImagesWordCount"]["mouseOver"])),
                new Bitmap(Path.Combine(serverPath, data["ClearButtonImagesWordCount"]["mouseDown"])),
                ClearButtonWordCountSongs_Click);

            pictureBoxWordCountSongs.Controls.Add(clearButtonWordCountSongs);

            // 初始化「重填」按鈕
            modifyButtonWordCountSongs = new Button { Name = "btnModifyWordCountSongs" };
            ConfigureButton(modifyButtonWordCountSongs, 136, 274, 72, 67,
                new Bitmap(Path.Combine(serverPath, data["ModifyButtonImagesWordCount"]["normal"])),
                new Bitmap(Path.Combine(serverPath, data["ModifyButtonImagesWordCount"]["mouseOver"])),
                new Bitmap(Path.Combine(serverPath, data["ModifyButtonImagesWordCount"]["mouseDown"])),
                ModifyButtonWordCountSongs_Click);

            pictureBoxWordCountSongs.Controls.Add(modifyButtonWordCountSongs);

            // 初始化「確認」按鈕
            enterButtonWordCountSongs = new Button { Name = "btnEnterWordCountSongs" };
            ConfigureButton(enterButtonWordCountSongs, 217, 274, 72, 67,
                new Bitmap(Path.Combine(serverPath, data["EnterButtonImagesWordCount"]["normal"])),
                new Bitmap(Path.Combine(serverPath, data["EnterButtonImagesWordCount"]["mouseOver"])),
                new Bitmap(Path.Combine(serverPath, data["EnterButtonImagesWordCount"]["mouseDown"])),
                (sender, e) => FindWordCountSongs());

            pictureBoxWordCountSongs.Controls.Add(enterButtonWordCountSongs);

            // 初始化「關閉」按鈕
            closeButtonWordCountSongs = new Button { Name = "btnCloseWordCountSongs" };
            ConfigureButton(closeButtonWordCountSongs, 298, 274, 72, 67,
                new Bitmap(Path.Combine(serverPath, data["CloseButtonImagesWordCount"]["normal"])),
                new Bitmap(Path.Combine(serverPath, data["CloseButtonImagesWordCount"]["mouseOver"])),
                new Bitmap(Path.Combine(serverPath, data["CloseButtonImagesWordCount"]["mouseDown"])),
                CloseButtonWordCountSongs_Click);

            pictureBoxWordCountSongs.Controls.Add(closeButtonWordCountSongs);
        }

        // 初始化 WordCount 歌手輸入框，並設定其屬性與事件處理程序。
        private void InitializeInputBoxWordCountSongs()
        {
            try
            {
                // 創建一個 RichTextBox 控件來作為輸入框
                inputBoxWordCountSongs = new RichTextBox
                {
                    Name = "inputBoxWordCountSongs",
                    ForeColor = Color.Black,  // 設定文字顏色
                    Font = new Font("Times New Roman", 26, FontStyle.Regular),  // 設定字體樣式
                    ScrollBars = RichTextBoxScrollBars.None  // 不顯示滾動條
                };

                // 調整和定位輸入框的位置及大小
                ResizeAndPositionControl(inputBoxWordCountSongs, 10, 55, 400, 60);
                // 將輸入框加入到窗體的控件集合中
                pictureBoxWordCountSongs.Controls.Add(inputBoxWordCountSongs);
            }
            catch (Exception ex)
            {
                Console.WriteLine("Error initializing inputBoxWordCountSongs: " + ex.Message);
            }
        }


        // 顯示圖片並根據配置文件設置顯示區域的大小和位置。
        // <param name="imagePath">圖片的路徑。</param>
        private void ShowImageOnPictureBoxWordCountSongs(string imagePath)
        {
            // 加載原始圖片
            Bitmap originalImage = new Bitmap(imagePath);

            // 設置圖片到 PictureBox
            pictureBoxWordCountSongs.Image = originalImage;

            // 調整 PictureBox 大小和位置
            ResizeAndPositionPictureBox(pictureBoxWordCountSongs, 778, 366, 420, 350);

            // 顯示圖片
            pictureBoxWordCountSongs.Visible = true;
        }

        // 設置注音歌手相關控制項（包括圖片框、按鈕和輸入框）的顯示或隱藏狀態。
        // <param name="isVisible">指定控件是否可見。True 為顯示，False 為隱藏。</param>
        private void SetWordCountSongsAndButtonsVisibility(bool isVisible)
        {
            // 定義一個動作來處理控制項的顯示或隱藏
            System.Action action = () =>
            {
                try
                {
                    // 暫停控制項佈局的重新排版，提高效率
                    SuspendLayout();
                    if (isVisible) SetUIVisible(pictureBoxWordCountSongs);
                    else CloseUI(pictureBoxWordCountSongs);
                }
                catch (Exception ex)
                {
                    Console.WriteLine("Error in SetWordCountSongsAndButtonsVisibility: " + ex.Message);
                }
            };

            // 檢查是否需要在主執行緒外執行
            if (this.InvokeRequired)
            {
                this.Invoke(action);  // 如果需要，透過主執行緒執行
            }
            else
            {
                action();  // 否則直接執行
            }
        }

        #region 按鈕點擊事件

        /// <summary>
        /// <para> 點擊「注音歌手搜尋」按鈕時執行的事件處理函式。</para>
        /// <para>此函式負責更新按鈕的背景圖片、載入對應的歌手圖片，並切換相關 UI 控件的可見性。</para>
        /// </summary>
        /// <param name="sender">觸發事件的物件（通常是按鈕本身）。</param>
        /// <param name="e">事件參數。</param>
        private void WordCountSearchSongsButton_Click(object sender, EventArgs e)
        {
            // 設定按鈕背景，將「注音搜尋」設為啟動狀態，其餘按鈕恢復為正常狀態
            zhuyinSearchSongButton.BackgroundImage = zhuyinSearchSongNormalBackground;
            englishSearchSongButton.BackgroundImage = englishSearchSongNormalBackground;
            pinyinSearchSongButton.BackgroundImage = pinyinSearchSongNormalBackground;
            wordCountSearchSongButton.BackgroundImage = wordCountSearchSongActiveBackground;
            handWritingSearchSongButton.BackgroundImage = handWritingSearchSongNormalBackground;
            numberSearchSongButton.BackgroundImage = numberSearchSongNormalBackground;

            // 載入設定檔，取得圖片路徑資訊
            var configData = LoadBtnConfigData();

            // 取得「注音歌手圖片」的完整路徑
            string imagePath = Path.Combine(serverPath, configData["ImagePaths"]["WordCountSongs"]);

            // 在 PictureBox 中顯示對應的「注音歌手」圖片
            ShowImageOnPictureBoxWordCountSongs(Path.Combine(serverPath, imagePath));

            // 鍵盤UI介面顯示設定
            SetWordCountSongsAndButtonsVisibility(true);
            SetEnglishSongsAndButtonsVisibility(false);
            SetPinYinSongsAndButtonsVisibility(false);
            SetHandWritingForSongsAndButtonsVisibility(false);
            SetSongIDSearchAndButtonsVisibility(false);
            SetZhuYinSongsAndButtonsVisibility(false);
            SetHandWritingForSongsAndButtonsVisibility(false);

            SetWordCountSongsAndButtonsVisibility(true);       // 顯示字數搜尋相關控件            
            // 顯示「注音歌手搜尋」的圖片框
            ResetinputBox();
            pictureBoxWordCountSongs.Visible = true;
        }

        /// <summary>
        /// 處理「修改」按鈕的點擊事件，該事件會刪除輸入框中的最後一個字符。
        /// </summary>
        private void ModifyButtonWordCountSongs_Click(object sender, EventArgs e)
        {
            // 如果輸入框不為空，且包含輸入內容，則刪除最後一個字符
            if (pictureBoxWordCountSongs.Controls.Contains(inputBoxWordCountSongs) && inputBoxWordCountSongs.Text.Length > 0)
            {
                inputBoxWordCountSongs.Text = inputBoxWordCountSongs.Text.Substring(0, inputBoxWordCountSongs.Text.Length - 1);
            }
        }

        /// <summary>
        /// 處理「清除」按鈕的點擊事件，該事件會清空輸入框中的所有文本。
        /// </summary>
        private void ClearButtonWordCountSongs_Click(object sender, EventArgs e)
        {
            // 如果輸入框不為空，則清空該框的文本內容
            if (pictureBoxWordCountSongs.Controls.Contains(inputBoxWordCountSongs) && inputBoxWordCountSongs.Text.Length > 0)
            {
                inputBoxWordCountSongs.Text = "";
            }
        }

        /// <summary>
        /// 「關閉」按鈕的點擊事件處理方法。
        /// 隱藏 WordCount 歌手圖片框以及與其相關的按鈕。
        /// </summary>
        private void CloseButtonWordCountSongs_Click(object sender, EventArgs e)
        {
            // 隱藏 WordCount 歌手圖片框
            pictureBoxWordCountSongs.Visible = false;
            // 關閉背景圖式
            wordCountSearchSongButton.BackgroundImage = wordCountSearchSongNormalBackground;
            // 隱藏與 WordCount 歌手相關的所有按鈕
            SetWordCountSongsAndButtonsVisibility(false);
        }
        private void NumberWordCountSongsButton_Click(object sender, EventArgs e)
        {
            var button = sender as Button;
            if (button != null && button.Tag != null)
            {

                if (inputBoxWordCountSongs.Visible)
                {
                    inputBoxWordCountSongs.Text += button.Tag.ToString();
                }
            }
        }
        
        /// 查詢歌曲(字數查詢)
        private void FindWordCountSongs()
        {
            string searchText = inputBoxWordCountSongs.Text;
            // 在這裡添加搜尋歌曲的邏輯
            // 例如：根據輸入框的內容搜尋歌曲
            string query;
            if (int.TryParse(searchText, out int length))
            {
                query = $"SELECT * FROM song_library_cache WHERE CHAR_LENGTH(song_name) = {length} order by 'song_name' DESC ;";
            }
            else
            {
                // 處理輸入錯誤，例如顯示提示訊息
                //MessageBox.Show("請輸入正確的數字！");
                query = string.Empty; // 清空查詢
                return;
            }
            var searchResults = SearchSongs_Mysql(query);
            // 重置分頁    
            currentPage = 0;
            totalPages = (int)Math.Ceiling((double)searchResults.Count / itemsPerPage);
            // 更新多頁面面板的內容
            multiPagePanel.currentPageIndex = 0;
            multiPagePanel.LoadSongs(searchResults);
        }
        #endregion

        #region 移除圖像周圍的白色邊框       
        /// <summary>
        /// 移除圖像周圍的白色邊框，將邊框的像素透明化。
        /// </summary>
        /// <param name="imagePath">待處理的圖像文件路徑。</param>
        /// <returns>處理後的圖像，其中白色邊框已被去除並替換為透明。</returns>
        private Image RemoveWhiteBorderForWordCountSongs(string imagePath)
        {
            // 創建一個 Bitmap 物件來加載圖像
            Bitmap bmp = new Bitmap(imagePath);

            // 定義圖像的矩形區域，這是我們將要操作的區域
            Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);

            // 鎖定圖像的位圖數據，以便進行直接修改
            BitmapData bmpData = bmp.LockBits(rect, ImageLockMode.ReadWrite, bmp.PixelFormat);

            IntPtr ptr = bmpData.Scan0;  // 獲取位圖數據的起始位置
            int bytes = Math.Abs(bmpData.Stride) * bmp.Height;  // 計算圖像的總字節數
            byte[] rgbValues = new byte[bytes];  // 用來存儲圖像的像素數據
            System.Runtime.InteropServices.Marshal.Copy(ptr, rgbValues, 0, bytes);  // 從圖像數據中複製像素數據到 rgbValues 陣列

            // 遍歷每個像素點，檢查是否為白色邊框
            for (int y = 0; y < bmp.Height; y++)
            {
                for (int x = 0; x < bmp.Width; x++)
                {
                    int position = (y * bmpData.Stride) + (x * 4);  // 計算當前像素的位址
                    byte b = rgbValues[position];  // 藍色分量
                    byte g = rgbValues[position + 1];  // 綠色分量
                    byte r = rgbValues[position + 2];  // 紅色分量
                    byte a = rgbValues[position + 3];  // alpha 分量（透明度）

                    // 如果當前像素在圖像邊緣且為白色 (255, 255, 255)，則將其設為透明
                    if ((x < 5 || x > bmp.Width - 5 || y < 5 || y > bmp.Height - 5) && r == 255 && g == 255 && b == 255)
                    {
                        // 將白色像素的 RGB 設置為 255, 255, 255 且 alpha 設為 0 (透明)
                        rgbValues[position] = 255;
                        rgbValues[position + 1] = 255;
                        rgbValues[position + 2] = 255;
                        rgbValues[position + 3] = 0;  // 透明
                    }
                }
            }

            // 將修改後的像素數據重新複製回位圖數據
            System.Runtime.InteropServices.Marshal.Copy(rgbValues, 0, ptr, bytes);

            // 解鎖圖像數據
            bmp.UnlockBits(bmpData);

            // 返回處理後的圖像
            return bmp;
        }
        #endregion
    }
}