label processing string & remove shared label info

[LinYunMo]

Re: #15890
#15693
https://github.com/cocos/3d-tasks/issues/17388

Changelog

---

Continuous Integration

This pull request:

• needs automatic test cases check.

  Manual trigger with @cocos-robot run test cases afterward.

• does not change any runtime related code or build configuration

  If any reviewer thinks the CI checks are needed, please uncheck this option, then close and reopen the issue.

---

Compatibility Check

This pull request:

• changes public API, and have ensured backward compatibility with deprecated features.
• affects platform compatibility, e.g. system version, browser version, platform sdk version, platform toolchain, language version, hardware compatibility etc.
• affects file structure of the build package or build configuration which requires user project upgrade.
• introduces breaking changes, please list all changes, affected features and the scope of violation.

[LinYunMo]

@cocos-robot run test cases

[github-actions]

Interface Check Report

! WARNING this pull request has changed these public interfaces:

@@ -60083,8 +60083,59 @@
              * @param {Number} y
              */
             drawTextureAt(image: ImageAsset, x: number, y: number): void;
         }
+        export interface _cocos_2d_assembler_label_font_utils__ILabelInfo {
+            fontSize: number;
+            fontFamily: string;
+            fontDesc: string;
+            color: math.Color;
+            isOutlined: boolean;
+            out: math.Color;
+            margin: number;
+            fontScale: number;
+        }
+        export class _cocos_2d_assembler_label_font_utils__LetterTexture {
+            image: ImageAsset | null;
+            labelInfo: _cocos_2d_assembler_label_font_utils__ILabelInfo;
+            char: string;
+            data: _cocos_2d_assembler_label_font_utils__ISharedLabelData | null;
+            canvas: HTMLCanvasElement | null;
+            context: CanvasRenderingContext2D | null;
+            width: number;
+            height: number;
+            offsetY: number;
+            hash: string;
+            constructor(char: string, labelInfo: _cocos_2d_assembler_label_font_utils__ILabelInfo, hash: string);
+            updateRenderData(): void;
+            destroy(): void;
+        }
+        export class _cocos_2d_assembler_label_font_utils__FontLetterDefinition {
+            u: number;
+            v: number;
+            w: number;
+            h: number;
+            texture: _cocos_2d_assembler_label_font_utils__LetterRenderTexture | null;
+            offsetX: number;
+            offsetY: number;
+            valid: boolean;
+            xAdvance: number;
+        }
+        export class _cocos_2d_assembler_label_font_utils__LetterAtlas {
+            get width(): number;
+            get height(): number;
+            fontDefDictionary: _cocos_2d_assets_bitmap_font__FontAtlas;
+            constructor(width: number, height: number);
+            insertLetterTexture(letterTexture: _cocos_2d_assembler_label_font_utils__LetterTexture): _cocos_2d_assembler_label_font_utils__FontLetterDefinition | null;
+            update(): void;
+            reset(): void;
+            destroy(): void;
+            getTexture(): any;
+            beforeSceneLoad(): void;
+            clearAllCache(): void;
+            getLetter(key: string): any;
+            getLetterDefinitionForChar(char: string, style: _cocos_2d_assembler_label_text_style__TextStyle, fontScale: number): any;
+        }
         export class _cocos_2d_assembler_label_text_style__TextStyle {
             isBold: boolean;
             isItalic: boolean;
             isUnderline: boolean;
@@ -60106,8 +60157,10 @@
             fontFamily: string;
             fontDesc: string;
             fntConfig: _cocos_2d_assets_bitmap_font__IConfig | null;
             spriteFrame: SpriteFrame | null;
+            hash: string;
+            fontAtlas: _cocos_2d_assets_bitmap_font__FontAtlas | _cocos_2d_assembler_label_font_utils__LetterAtlas | null;
             fontScale: number;
             reset(): void;
         }
         export class _cocos_2d_assembler_label_text_layout__TextLayout {
@@ -60146,15 +60199,24 @@
             uiTransAnchorX: number;
             uiTransAnchorY: number;
             reset(): void;
         }
+        export class _cocos_2d_assembler_label_text_processing__LetterInfo {
+            char: string;
+            valid: boolean;
+            x: number;
+            y: number;
+            line: number;
+            hash: string;
+        }
         export class _cocos_2d_assembler_label_text_output_data__TextOutputLayoutData {
             parsedString: string[];
             nodeContentSize: math.Size;
             canvasSize: math.Size;
             canvasPadding: math.Rect;
             contentSizeExtend: math.Size;
             startPosition: math.Vec2;
+            lettersInfo: _cocos_2d_assembler_label_text_processing__LetterInfo[];
             reset(): void;
         }
         export class _cocos_2d_renderer_native_2d__NativeBatcher2d {
             syncMeshBuffersToNative(accId: number, buffers: _cocos_2d_renderer_native_2d__NativeUIMeshBuffer[]): any;

[LinYunMo]

@cocos-robot run test cases

[LinYunMo]

@cocos-robot run test cases

[holycanvas]

这里没用了么？

[LinYunMo]

重复函数

[holycanvas]

应该直接把 font 传下来，不应该拆成多个传递

[holycanvas]

组件上为什么要缓存这个变量

[holycanvas]

更新渲染时，需要先更新布局？

[LinYunMo]

不需要，只是在此PR中未进行流程分离，在流程分离 PR 中移除了此步

[holycanvas]

为什么会需要回调？

[LinYunMo]

由于在两种类型中，顶点处理方式无法统一，所以使用回调函数