逻辑修改

src/core/utils/DraggableResizableWindow.ts

@@ -51,8 +51,8 @@ interface IDraggableResizableOptions {
   target: HTMLElement;
   /** 拖拽句柄 */
   handle?: HTMLElement;
-  /** 拖拽边界或容器元素 */
-  boundary?: IBoundaryRect | HTMLElement;
+  /** 拖拽边界容器元素 */
+  boundaryElement?: HTMLElement;
   /** 移动步进（网格吸附） */
   snapGrid?: number;
   /** 关键点吸附阈值 */
@@ -110,7 +110,7 @@ interface IBoundaryRect {
 export class DraggableResizableWindow {
   private handle?: HTMLElement;
   private target: HTMLElement;
-  private boundary?: HTMLElement | IBoundaryRect;
+  private boundaryElement: HTMLElement;
   private snapGrid: number;
   private snapThreshold: number;
   private snapAnimation: boolean;
@@ -153,7 +153,7 @@ export class DraggableResizableWindow {
   private maxWidth: number;
   private maxHeight: number;
 
-  private containerRect?: DOMRect;
+  private containerRect: DOMRect;
   private resizeObserver?: ResizeObserver;
   private mutationObserver: MutationObserver;
   private animationFrame?: number;
@@ -174,7 +174,7 @@ export class DraggableResizableWindow {
   constructor(options: IDraggableResizableOptions) {
     this.handle = options.handle;
     this.target = options.target;
-    this.boundary = options.boundary;
+    this.boundaryElement = options.boundaryElement ?? document.body;
     this.snapGrid = options.snapGrid ?? 1;
     this.snapThreshold = options.snapThreshold ?? 0;
     this.snapAnimation = options.snapAnimation ?? false;
@@ -193,15 +193,6 @@ export class DraggableResizableWindow {
     this.onResizeEnd = options.onResizeEnd;
     this.onWindowStateChange = options.onWindowStateChange;
 
-    requestAnimationFrame(() => {
-      this.targetBounds = {
-        width: this.target.offsetWidth,
-        height: this.target.offsetHeight,
-        top: this.target.offsetTop,
-        left: this.target.offsetLeft,
-      };
-    });
-
     this.taskbarElementId = options.taskbarElementId;
 
     this.target.style.position = "absolute";
@@ -210,6 +201,19 @@ export class DraggableResizableWindow {
     this.target.style.transform = "translate(0px, 0px)";
 
     this.init();
+
+    requestAnimationFrame(() => {
+      this.targetBounds = {
+        width: this.target.offsetWidth,
+        height: this.target.offsetHeight,
+        top: this.target.offsetTop,
+        left: this.target.offsetLeft,
+      };
+      this.containerRect = this.boundaryElement.getBoundingClientRect();
+      const x = this.containerRect.width / 2 - this.target.offsetWidth / 2;
+      const y = this.containerRect.height / 2 - this.target.offsetHeight / 2;
+      this.target.style.transform = `translate(${x}px, ${y}px)`;
+    });
   }
 
   private init() {
@@ -220,7 +224,7 @@ export class DraggableResizableWindow {
     this.target.addEventListener('mouseleave', this.onMouseLeave);
     document.addEventListener('mousemove', this.onDocumentMouseMoveCursor);
 
-    if (this.boundary instanceof HTMLElement) this.observeResize(this.boundary);
+    this.observeResize(this.boundaryElement);
 
     this.mutationObserver = new MutationObserver(mutations => {
       for (const mutation of mutations) {
@@ -382,19 +386,12 @@ export class DraggableResizableWindow {
   }
 
   private applyBoundary() {
-    if (!this.boundary || this.allowOverflow) return;
+    if (this.allowOverflow) return;
     let { x, y } = { x: this.currentX, y: this.currentY };
 
-    if (this.boundary instanceof HTMLElement && this.containerRect) {
     const rect = this.target.getBoundingClientRect();
     x = Math.min(Math.max(x, 0), this.containerRect.width - rect.width);
     y = Math.min(Math.max(y, 0), this.containerRect.height - rect.height);
-    } else if (!(this.boundary instanceof HTMLElement) && this.boundary) {
-      if (this.boundary.minX !== undefined) x = Math.max(x, this.boundary.minX);
-      if (this.boundary.maxX !== undefined) x = Math.min(x, this.boundary.maxX);
-      if (this.boundary.minY !== undefined) y = Math.max(y, this.boundary.minY);
-      if (this.boundary.maxY !== undefined) y = Math.min(y, this.boundary.maxY);
-    }
 
     this.currentX = x;
     this.currentY = y;
@@ -413,16 +410,9 @@ export class DraggableResizableWindow {
 
   private getSnapPoints() {
     const snapPoints = { x: [] as number[], y: [] as number[] };
-    if (this.boundary instanceof HTMLElement && this.containerRect) {
     const rect = this.target.getBoundingClientRect();
     snapPoints.x = [0, this.containerRect.width - rect.width];
     snapPoints.y = [0, this.containerRect.height - rect.height];
-    } else if (this.boundary && !(this.boundary instanceof HTMLElement)) {
-      if (this.boundary.minX !== undefined) snapPoints.x.push(this.boundary.minX);
-      if (this.boundary.maxX !== undefined) snapPoints.x.push(this.boundary.maxX);
-      if (this.boundary.minY !== undefined) snapPoints.y.push(this.boundary.minY);
-      if (this.boundary.maxY !== undefined) snapPoints.y.push(this.boundary.maxY);
-    }
     return snapPoints;
   }
 
@@ -517,7 +507,7 @@ export class DraggableResizableWindow {
     newHeight = Math.max(this.minHeight, Math.min(this.maxHeight, newHeight));
 
     // 边界限制
-    if (!this.boundary || this.allowOverflow) {
+    if (this.allowOverflow) {
       this.currentX = newX;
       this.currentY = newY;
       this.target.style.width = `${newWidth}px`;
@@ -526,15 +516,8 @@ export class DraggableResizableWindow {
       return;
     }
 
-    if (this.boundary instanceof HTMLElement && this.containerRect) {
     newX = Math.min(Math.max(0, newX), this.containerRect.width - newWidth);
     newY = Math.min(Math.max(0, newY), this.containerRect.height - newHeight);
-    } else if (!(this.boundary instanceof HTMLElement) && this.boundary) {
-      if (this.boundary.minX !== undefined) newX = Math.max(newX, this.boundary.minX);
-      if (this.boundary.maxX !== undefined) newX = Math.min(newX, this.boundary.maxX);
-      if (this.boundary.minY !== undefined) newY = Math.max(newY, this.boundary.minY);
-      if (this.boundary.maxY !== undefined) newY = Math.min(newY, this.boundary.maxY);
-    }
 
     this.currentX = newX;
     this.currentY = newY;

src/core/window/css/window-form.scss

@@ -1,3 +1,5 @@
+$titleBarHeight: 40px;
+
 /* 窗体容器 */
 .window {
   width: 100%;
@@ -15,6 +17,8 @@
   justify-content: space-between;
   align-items: center;
   user-select: none;
+  width: 100%;
+  height: $titleBarHeight;
 
   .title {
     display: block;
@@ -24,6 +28,7 @@
     white-space: nowrap;
     text-overflow: ellipsis;
     font-size: 18px;
+    line-height: $titleBarHeight;
   }
 
   .window-controls {
@@ -52,6 +57,7 @@
 
 /* 窗体内容 */
 .window-content {
-  padding: 15px;
+  width: 100%;
+  height: calc(100% - #{$titleBarHeight});
   background-color: #e0e0e0;
 }

src/core/window/impl/WindowFormImpl.ts

@@ -53,7 +53,7 @@ export default class WindowFormImpl implements IWindowForm {
       handle: header,
       snapAnimation: true,
       snapThreshold: 20,
-      boundary: document.body,
+      boundaryElement: document.body,
       taskbarElementId: '#taskbar',
       onWindowStateChange: (state) => {
         if (state === 'maximized') {