feat：amis支持手写签名面板

docs/zh-CN/components/form/input-signature.md

@@ -0,0 +1,115 @@
+---
+title: inputSignature 签名面板
+description:
+type: 0
+group: null
+menuName: inputSignature
+icon:
+order: 62
+---
+
+## 基本用法
+
+```schema: scope="body"
+{
+    "type": "form",
+    "api": "/api/mock2/form/saveForm",
+    "body": [
+        {
+            "name": "signature",
+            "type": "input-signature",
+            "label": "手写签名",
+            "height": 200
+        }
+    ]
+}
+```
+
+## 水平展示
+
+```schema: scope="body"
+{
+    "type": "form",
+    "api": "/api/mock2/form/saveForm",
+    "body": [
+        {
+            "name": "signature",
+            "type": "input-signature",
+            "horiz": true,
+            "height": 300
+        }
+    ]
+}
+```
+
+## 自定义按钮名称
+
+```schema: scope="body"
+{
+    "type": "form",
+    "api": "/api/mock2/form/saveForm",
+    "body": [
+        {
+            "name": "signature",
+            "type": "input-signature",
+            "height": 160,
+            "confirmText": "确定",
+            "undoText": "上一步",
+            "clearText": "重置"
+        }
+    ]
+}
+```
+
+## 自定义颜色
+
+```schema: scope="body"
+{
+    "type": "form",
+    "api": "/api/mock2/form/saveForm",
+    "body": [
+        {
+            "name": "signature",
+            "type": "input-signature",
+            "label": "手写签名",
+            "height": 200,
+            "color": "#ff0000",
+            "bgColor": "#fff"
+        }
+    ]
+}
+```
+
+## 配合图片组件实现实时预览
+
+```schema: scope="body"
+{
+    "type": "form",
+    "api": "/api/mock2/form/saveForm",
+    "body": [
+        {
+            "name": "signature",
+            "type": "input-signature",
+            "label": "手写签名",
+            "height": 200
+        },
+        {
+            "type": "image",
+            "name": "signature"
+        }
+    ]
+}
+```
+
+## 属性表
+
+| 属性名      | 类型      | 默认值    | 说明               |
+| ----------- | --------- | --------- | ------------------ |
+| width       | `number`  |           | 组件宽度，最小 300 |
+| height      | `number`  |           | 组件高度，最小 160 |
+| color       | `string`  | `#000`    | 手写字体颜色       |
+| bgColor     | `string`  | `#EFEFEF` | 面板背景颜色       |
+| clearText   | `string`  | `清空`    | 清空按钮名称       |
+| undoText    | `string`  | `撤销`    | 撤销按钮名称       |
+| confirmText | `string`  | `确认`    | 确认按钮名称       |
+| horiz       | `boolean` |           | 是否水平展示       |

examples/components/Components.tsx

@@ -785,6 +785,16 @@ export const components = [
             wrapDoc
           )
         )
+      },
+
+      {
+        label: 'InputSignature 签名面板',
+        path: '/zh-CN/components/form/input-signature',
+        component: React.lazy(() =>
+          import('../../docs/zh-CN/components/form/input-signature.md').then(
+            wrapDoc
+          )
+        )
       }
     ]
   },

package.json

@@ -43,7 +43,8 @@
   "dependencies": {
     "path-to-regexp": "^6.2.0",
     "postcss": "^8.4.14",
-    "qs": "6.9.7"
+    "qs": "6.9.7",
+    "smooth-signature": "^1.0.13"
   },
   "devDependencies": {
     "@babel/generator": "^7.22.9",
@@ -149,4 +150,4 @@
       "printBasicPrototype": false
     }
   }
-}
+}

packages/amis-ui/scss/components/_signature.scss

@@ -0,0 +1,35 @@
+.#{$ns}Signature {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  justify-content: space-between;
+  &-canvas {
+    border: 1px dashed #aaa;
+  }
+  &-Tool {
+    text-align: center;
+    height: 40px;
+    margin-top: 8px;
+    button {
+      margin-left: 5px;
+    }
+  }
+
+  &.is-horizontal {
+    flex-direction: row-reverse;
+    align-items: center;
+    .#{$ns}Signature-Tool {
+      width: 32px;
+      height: 100%;
+      margin-top: 0;
+      display: flex;
+      justify-content: center;
+      align-items: center;
+      .actions {
+        white-space: nowrap;
+        transform: rotate(90deg);
+      }
+    }
+  }
+}

packages/amis-ui/scss/themes/_common.scss

@@ -143,5 +143,6 @@
 @import '../components/menu';
 @import '../components/overflow-tpl';
 @import '../components/pdf_viewer';
+@import '../components/signature';
 
 @import '../components/print';

packages/amis-ui/src/components/Signature.tsx

@@ -0,0 +1,113 @@
+/**
+ * @file Signature.tsx 签名组件
+ *
+ * @created: 2024/03/04
+ */
+
+import React from 'react';
+import {themeable, ThemeProps} from 'amis-core';
+import {LocaleProps, localeable} from 'amis-core';
+import {resizeSensor} from 'amis-core';
+import SmoothSignature from 'smooth-signature';
+import Button from './Button';
+
+export interface ISignatureProps extends LocaleProps, ThemeProps {
+  width?: number;
+  height?: number;
+  color?: string;
+  bgColor?: string;
+  clearText?: string;
+  undoText?: string;
+  confirmText?: string;
+  horizontal?: boolean;
+  onChange?: (value?: string) => void;
+}
+
+const Signature: React.FC<ISignatureProps> = props => {
+  const {classnames: cx, horizontal, width, height} = props;
+  const [sign, setSign] = React.useState<SmoothSignature | null>(null);
+  const wrapper = React.useRef<HTMLDivElement>(null);
+  const canvas = React.useRef<HTMLCanvasElement>(null);
+
+  React.useEffect(() => {
+    if (!wrapper.current || !canvas.current) {
+      return;
+    }
+
+    initCanvas(canvas.current);
+    const unSensor = resizeSensor(wrapper.current, resize);
+
+    return () => {
+      setSign(null);
+      unSensor();
+    };
+  }, []);
+
+  const clear = React.useCallback(() => {
+    if (sign) {
+      sign.clear();
+      props.onChange?.(undefined);
+    }
+  }, [sign]);
+  const undo = React.useCallback(() => {
+    if (sign) {
+      sign.undo();
+    }
+  }, [sign]);
+  const confirm = React.useCallback(() => {
+    if (sign) {
+      const base64 = sign.toDataURL();
+      props.onChange?.(base64);
+    }
+  }, [sign]);
+  const resize = React.useCallback(() => {
+    setSign(null);
+    initCanvas(canvas.current!);
+  }, []);
+  const initCanvas = React.useCallback(
+    (element: HTMLCanvasElement) => {
+      const {width, height} = props;
+      const rect = element.parentElement!.getBoundingClientRect();
+      const clientWidth = Math.floor(rect.width);
+      const defaultWidth = width || clientWidth - (horizontal ? 40 : 0);
+      const defaultHeight = height || clientWidth / 2 - (horizontal ? 0 : 40);
+      const signature = new SmoothSignature(element, {
+        width: Math.max(defaultWidth, 300),
+        height: Math.max(defaultHeight, 160),
+        color: props.color || '#000',
+        bgColor: props.bgColor || '#efefef'
+      });
+      setSign(signature);
+    },
+    [width, height, horizontal]
+  );
+
+  function renderTool() {
+    const {translate: __, clearText, undoText, confirmText} = props;
+    return (
+      <div className={cx('Signature-Tool')}>
+        <div className="actions">
+          <Button onClick={clear}>{clearText || __('Signature.clear')}</Button>
+          <Button onClick={undo}>{undoText || __('Signature.undo')}</Button>
+          <Button onClick={confirm}>
+            {confirmText || __('Signature.confirm')}
+          </Button>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div
+      className={cx('Signature', {
+        'is-horizontal': horizontal
+      })}
+      ref={wrapper}
+    >
+      <canvas className={cx('Signature-canvas')} ref={canvas} />
+      {renderTool()}
+    </div>
+  );
+};
+
+export default themeable(localeable(Signature));

packages/amis-ui/src/components/index.tsx

@@ -130,6 +130,7 @@ import InputBoxWithSuggestion from './InputBoxWithSuggestion';
 import {CodeMirrorEditor} from './CodeMirror';
 import type CodeMirror from 'codemirror';
 import OverflowTpl from './OverflowTpl';
+import Signature from './Signature';
 
 export {
   NotFound,
@@ -263,5 +264,6 @@ export {
   Menu,
   CodeMirror,
   CodeMirrorEditor,
-  OverflowTpl
+  OverflowTpl,
+  Signature
 };

packages/amis-ui/src/locale/de-DE.ts

@@ -430,5 +430,8 @@ register('de-DE', {
   'TimeNow': 'Jetzt',
   'Steps.step': 'Schritt {{index}}',
   'FormulaInput.True': 'Treu',
-  'FormulaInput.False': 'Falsch'
+  'FormulaInput.False': 'Falsch',
+  'Signature.clear': 'leer',
+  'Signature.undo': 'widerrufen',
+  'Signature.confirm': 'bestätigen'
 });

packages/amis-ui/src/locale/en-US.ts

@@ -414,5 +414,8 @@ register('en-US', {
   'IconSelect.choice': 'Icon selection',
   'Steps.step': 'Step {{index}}',
   'FormulaInput.True': 'True',
-  'FormulaInput.False': 'False'
+  'FormulaInput.False': 'False',
+  'Signature.clear': 'clear',
+  'Signature.undo': 'undo',
+  'Signature.confirm': 'confirm'
 });

packages/amis-ui/src/locale/zh-CN.ts

@@ -409,5 +409,8 @@ register('zh-CN', {
   'IconSelect.choice': '图标选择',
   'Steps.step': '第 {{index}} 步',
   'FormulaInput.True': '真',
-  'FormulaInput.False': '假'
+  'FormulaInput.False': '假',
+  'Signature.clear': '清空',
+  'Signature.undo': '撤销',
+  'Signature.confirm': '确认'
 });

packages/amis/src/Schema.ts

@@ -121,6 +121,7 @@ import {TransferPickerControlSchema} from './renderers/Form/TransferPicker';
 import {TabsTransferPickerControlSchema} from './renderers/Form/TabsTransferPicker';
 import {UserSelectControlSchema} from './renderers/Form/UserSelect';
 import {JSONSchemaEditorControlSchema} from './renderers/Form/JSONSchemaEditor';
+import {InputSignatureSchema} from './renderers/Form/InputSignature';
 import {TableSchema2} from './renderers/Table2';
 import {
   BaseSchemaWithoutType,
@@ -254,6 +255,7 @@ export type SchemaType =
   | 'diff-editor'
   | 'office-viewer'
   | 'pdf-viewer'
+  | 'input-signature'
 
   // editor 系列
   | 'editor'
@@ -461,6 +463,7 @@ export type SchemaObject =
   | InputGroupControlSchema
   | ListControlSchema
   | JSONSchemaEditorControlSchema
+  | InputSignatureSchema
   | LocationControlSchema
   | UUIDControlSchema
   | MatrixControlSchema

packages/amis/src/index.tsx

@@ -94,6 +94,7 @@ import './renderers/Form/TabsTransferPicker';
 import './renderers/Form/Group';
 import './renderers/Form/InputGroup';
 import './renderers/Form/UserSelect';
+import './renderers/Form/InputSignature';
 import './renderers/Grid';
 import './renderers/Grid2D';
 import './renderers/HBox';

packages/amis/src/renderers/Form/InputSignature.tsx

@@ -0,0 +1,112 @@
+/**
+ * @file Signature.tsx 签名组件
+ *
+ * @created: 2024/03/04
+ */
+
+import React from 'react';
+import {
+  IScopedContext,
+  FormItem,
+  FormControlProps,
+  ScopedContext
+} from 'amis-core';
+import {Signature} from 'amis-ui';
+import pick from 'lodash/pick';
+import {FormBaseControlSchema} from '../../Schema';
+
+export interface InputSignatureSchema extends FormBaseControlSchema {
+  type: 'input-signature';
+  /**
+   * 组件宽度，默认占满父容器
+   */
+  width?: number;
+  /**
+   * 组件高度，默认占满父容器
+   */
+  height?: number;
+  /**
+   * 组件字段颜色
+   * @default #000
+   */
+  color?: string;
+  /**
+   * 组件背景颜色
+   * @default #efefef
+   */
+  bgColor?: string;
+  /**
+   * 清空按钮名称
+   * @default 清空
+   */
+  clearText?: string;
+  /**
+   * 撤销按钮名称
+   * @default 撤销
+   */
+  undoText?: string;
+  /**
+   * 确认按钮名称
+   * @default 确认
+   */
+  confirmText?: string;
+  /**
+   * 是否水平展示
+   */
+  horiz?: boolean;
+}
+
+export interface IInputSignatureProps extends FormControlProps {}
+
+interface IInputSignatureState {
+  loading: boolean;
+}
+
+export default class InputSignatureComp extends React.Component<
+  IInputSignatureProps,
+  IInputSignatureState
+> {
+  render() {
+    const {classnames: cx, horiz: horizontal, onChange} = this.props;
+    const props = pick(this.props, [
+      'width',
+      'height',
+      'mobileUI',
+      'color',
+      'bgColor',
+      'clearText',
+      'undoText',
+      'confirmText'
+    ]);
+
+    return (
+      <Signature
+        classnames={cx}
+        horizontal={horizontal}
+        onChange={onChange}
+        {...props}
+      />
+    );
+  }
+}
+
+@FormItem({
+  type: 'input-signature',
+  sizeMutable: false
+})
+export class InputSignatureRenderer extends InputSignatureComp {
+  static contextType = ScopedContext;
+
+  constructor(props: IInputSignatureProps, context: IScopedContext) {
+    super(props);
+
+    const scoped = context;
+    scoped.registerComponent(this);
+  }
+
+  componentWillUnmount() {
+    super.componentWillUnmount?.();
+    const scoped = this.context as IScopedContext;
+    scoped.unRegisterComponent(this);
+  }
+}