Method showSuccess

pixelizer.js:1185–1213

(message)

    }

    showSuccess(message) {
        // 创建成功提示
        const successDiv = document.createElement('div');
        successDiv.className = 'success-message';
        successDiv.style.cssText = `
            position: fixed;
            top: 20px;
            right: 20px;
            background: #4caf50;
            color: white;
            padding: 16px 24px;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
            z-index: 1000;
            max-width: 400px;
            font-size: 14px;
            line-height: 1.4;
        `;
        successDiv.textContent = message;
        
        document.body.appendChild(successDiv);
        
        // 2秒后自动消失
        setTimeout(() => {
            if (successDiv.parentNode) {
                successDiv.parentNode.removeChild(successDiv);
            }
        }, 2000);
    }

    cancelProcessing() {
        if (this.currentWorker) {