Function cancelCapture

apps/screenshot/content-script.js:356–373

* 取消截图操作

()

     * 取消截图操作
     */
    function cancelCapture() {
        if (isCapturing) {
            isCancelled = true;
            isCapturing = false;
            
            // 移除进度UI
            const progressContainer = document.getElementById('fehelper-screenshot-progress');
            if (progressContainer) {
                progressContainer.style.display = 'none';
            }
            
            // 恢复原始状态
            cleanup && typeof cleanup === 'function' && cleanup();
            
            return true;
        }
        return false;
    }

    /**
     * 隐藏所有FeHelper UI元素