def display_image(self, pil_image):
    """在界面上顯示圖片"""
    if pil_image.mode == "RGBA":
        data = pil_image.tobytes("raw", "RGBA")
        qimage = QImage(data, pil_image.size[0], pil_image.size[1], QImage.Format_RGBA8888)
        pixmap = QPixmap.fromImage(qimage)

def paste_image(self):
    """從剪切板粘貼圖片"""
    clipboard = QApplication.clipboard()
    pixmap = clipboard.pixmap()
    
    # 轉(zhuǎn)換為RGB格式（更穩(wěn)定）
    qimage = qimage.convertToFormat(QImage.Format_RGB888)
    
    # 獲取字節(jié)數(shù)據(jù)并轉(zhuǎn)換為numpy數(shù)組
    ptr = qimage.constBits()
    ptr.setsize(height * width * 3)
    arr = np.frombuffer(ptr, np.uint8).reshape((height, width, 3))

mask_draw.ellipse([0, 0, size, size], fill=255)

def _draw_heart_mask(self, draw, size):
    """使用參數(shù)方程繪制心形"""
    points = []
    for t in range(0, 360, 1):
        t_rad = math.radians(t)
        # 心形參數(shù)方程
        x = 16 * math.sin(t_rad) ** 3
        y = -(13 * math.cos(t_rad) - 5 * math.cos(2 * t_rad) - 
              2 * math.cos(3 * t_rad) - math.cos(4 * t_rad))
        points.append((center_x + x * scale, center_y + y * scale))
    draw.polygon(points, fill=255)

# 五角星的內(nèi)外半徑計(jì)算
for i in range(10):
    angle = i * math.pi / 5 - math.pi / 2
    radius = outer_radius if i % 2 == 0 else inner_radius
    x = center + radius * math.cos(angle)
    y = center + radius * math.sin(angle)
    points.append((x, y))

self.setStyleSheet("""
    QPushButton {
        background-color: #0078d4;
        color: white;
        border: none;
        border-radius: 5px;
        font-size: 14px;
        font-weight: bold;
    }
    QPushButton:hover {
        background-color: #106ebe;
    }
""")

# 計(jì)算偏移量，確保圖片居中
x_offset = (size - width) // 2 if width < size else (width - size) // 2
y_offset = (size - height) // 2 if height < size else (height - size) // 2

if width < size or height < size:
    square_img.paste(self.original_image, (max(0, x_offset), max(0, y_offset)))
else:
    # 如果原圖更大，進(jìn)行智能裁剪
    crop_box = (max(0, x_offset), max(0, y_offset), 
               max(0, x_offset) + size, max(0, y_offset) + size)
    cropped = self.original_image.crop(crop_box)
    square_img.paste(cropped, (0, 0))

# 創(chuàng)建透明背景的結(jié)果圖像
result = Image.new("RGBA", (size, size), (0, 0, 0, 0))
# 使用遮罩進(jìn)行圖像合成
result.paste(square_img, mask=mask)

try:
    # 圖像處理邏輯
    pass
except Exception as e:
    print(f"形狀轉(zhuǎn)換異常: {str(e)}")
    import traceback
    traceback.print_exc()
    QMessageBox.critical(self, "錯(cuò)誤", f"形狀轉(zhuǎn)換失敗: {str(e)}")

pip install PyQt5 Pillow numpy