def load_image(self):
    """加載并處理圖片"""
    try:
        # 使用PIL加載圖片并保持寬高比
        pil_image = Image.open(self.image_path)
        
        # 獲取當前面板大小
        panel_width, panel_height = self.GetSize()
        
        # 計算縮放比例保持寬高比
        img_width, img_height = pil_image.size
        scale_x = (panel_width - 20) / img_width  # 留出邊距
        scale_y = (panel_height - 40) / img_height  # 留出標題欄空間
        scale = min(scale_x, scale_y)
        
        new_width = int(img_width * scale)
        new_height = int(img_height * scale)
        
        # 縮放圖片
        pil_image = pil_image.resize((new_width, new_height), Image.Resampling.LANCZOS)

def on_paint(self, event):
    """繪制照片"""
    dc = wx.PaintDC(self)
    dc.Clear()
    
    # 繪制陰影
    shadow_color = wx.Colour(0, 0, 0, 50)
    dc.SetBrush(wx.Brush(shadow_color))
    dc.SetPen(wx.Pen(shadow_color))
    width, height = self.GetSize()
    dc.DrawRectangle(self.shadow_offset, self.shadow_offset, width, height)
    
    # 繪制白色邊框（模擬照片邊框）
    dc.SetBrush(wx.Brush(wx.Colour(255, 255, 255)))
    dc.SetPen(wx.Pen(wx.Colour(200, 200, 200), 1))
    dc.DrawRectangle(0, 0, width - self.shadow_offset, height - self.shadow_offset)

def on_left_down(self, event):
    """鼠標左鍵按下"""
    pos = event.GetPosition()
    width, height = self.GetSize()
    
    # 檢查是否點擊關閉按鈕
    close_btn_size = 20
    close_x = width - close_btn_size - self.shadow_offset - 5
    close_y = 5
    
    if (close_x <= pos.x <= close_x + close_btn_size and 
        close_y <= pos.y <= close_y + close_btn_size):
        # 點擊了關閉按鈕
        self.parent.remove_photo(self)
        return
    
    # 檢查是否點擊調整大小手柄
    handle_size = 15
    handle_x = width - handle_size - self.shadow_offset
    handle_y = height - handle_size - self.shadow_offset
    
    if (handle_x <= pos.x <= width - self.shadow_offset and 
        handle_y <= pos.y <= height - self.shadow_offset):
        # 開始調整大小
        self.resizing = True
        self.resize_start_pos = event.GetPosition()
        self.resize_start_size = self.GetSize()
        self.SetCursor(wx.Cursor(wx.CURSOR_SIZENWSE))
        self.CaptureMouse()
    else:
        # 開始拖拽
        self.dragging = True
        self.drag_start_pos = event.GetPosition()
        self.CaptureMouse()

def add_photo(self, image_path):
    """添加照片"""
    # 隨機位置
    max_x = max(50, self.GetSize().width - 250)
    max_y = max(50, self.GetSize().height - 200)
    
    x = random.randint(50, max_x)
    y = random.randint(50, max_y)
    
    # 創(chuàng)建照片面板
    photo_panel = PhotoPanel(self, image_path, pos=(x, y))
    self.photos.append(photo_panel)
    
    self.Refresh()  # 刷新背景

def remove_photo(self, photo_panel):
    """刪除照片"""
    if photo_panel in self.photos:
        self.photos.remove(photo_panel)
        photo_panel.Destroy()
        self.Refresh()

def bring_to_front(self, photo_panel):
    """將照片置于頂層"""
    if photo_panel in self.photos:
        self.photos.remove(photo_panel)
        self.photos.append(photo_panel)
        photo_panel.Raise()

def on_paint(self, event):
    """繪制背景"""
    dc = wx.PaintDC(self)
    dc.Clear()
    
    # 繪制桌布紋理效果
    size = self.GetSize()
    
    # 創(chuàng)建漸變背景
    dc.GradientFillLinear(wx.Rect(0, 0, size.width, size.height),
                         wx.Colour(250, 245, 230),
                         wx.Colour(230, 220, 200),
                         wx.SOUTH)
    
    # 如果沒有照片，顯示提示信息
    if not self.photos:
        dc.SetTextForeground(wx.Colour(150, 150, 150))
        dc.SetFont(wx.Font(16, wx.FONTFAMILY_DEFAULT, wx.FONTSTYLE_ITALIC, wx.FONTWEIGHT_NORMAL))
        
        text1 = "拖拽照片到這里"
        text2 = "或者使用 文件 -> 打開照片"
        
        text1_size = dc.GetTextExtent(text1)
        text2_size = dc.GetTextExtent(text2)
        
        x1 = (size.width - text1_size.width) // 2
        y1 = (size.height - text1_size.height) // 2 - 20
        
        x2 = (size.width - text2_size.width) // 2
        y2 = y1 + text1_size.height + 10
        
        dc.DrawText(text1, x1, y1)
        dc.DrawText(text2, x2, y2)

class FileDropTarget(wx.FileDropTarget):
    """文件拖拽目標類"""
    def __init__(self, window):
        super().__init__()
        self.window = window
    
    def OnDropFiles(self, x, y, filenames):
        """文件拖拽處理"""
        image_extensions = {'.jpg', '.jpeg', '.png', '.bmp', '.gif', '.tiff', '.webp'}
        
        for filename in filenames:
            ext = os.path.splitext(filename)[1].lower()
            if ext in image_extensions:
                self.window.add_photo(filename)
        
        return True

# 綁定事件
self.Bind(wx.EVT_PAINT, self.on_paint)
self.Bind(wx.EVT_LEFT_DOWN, self.on_left_down)
self.Bind(wx.EVT_LEFT_UP, self.on_left_up)
self.Bind(wx.EVT_MOTION, self.on_motion)
self.Bind(wx.EVT_RIGHT_DOWN, self.on_right_down)

# 檢查是否點擊關閉按鈕
close_btn_size = 20
close_x = width - close_btn_size - self.shadow_offset - 5
close_y = 5

if (close_x <= pos.x <= close_x + close_btn_size and 
    close_y <= pos.y <= close_y + close_btn_size):
    # 點擊了關閉按鈕
    self.parent.remove_photo(self)
    return