fix: keep notification hover state on close button edge

1. Extend the notification bubble input area to cover the close button
   edge outside the notification card background
2. Keep the bubble delegate width aligned with the expanded input area
   while preserving the 360px notification content layout and right margin
3. Use the delegate hover state to keep the close button visible and
   block timeout closing while the pointer stays on the edge area

Influence:
1. Test notification bubble hover on the notification body and close button edge
2. Verify the close button remains visible when hovering its top-right edge
3. Verify hovered notifications do not expire automatically
4. Verify notification position and stacking animation remain unchanged

fix: 保持通知关闭按钮边缘区域悬停状态

1. 扩展通知气泡输入区域，覆盖通知卡片背景外的关闭按钮边缘区域
2. 保持delegate宽度与扩展后的输入区域一致，同时保留360px通知内容布局和右边距
3. 使用delegate悬停状态保持关闭按钮显示，并在指针位于边缘区域时阻止通知超时关闭

Influence:
1. 测试通知主体和关闭按钮边缘区域的悬停效果
2. 验证鼠标悬停在右上角关闭按钮边缘时关闭按钮持续显示
3. 验证悬停状态下通知不会自动超时消失
4. 验证通知显示位置和堆叠动画保持不变

PMS: BUG-365963

Author: robertkill

panels/notification/bubble/package/BubbleDelegate.qml

@@ -5,20 +5,37 @@
 import QtQuick 2.15
 import QtQuick.Controls 2.15
 
+import org.deepin.ds 1.0
+
 Item {
     id: delegateRoot
-    width: 360
+    width: ListView.view ? ListView.view.width : 360
+    // Close button overhang: half of 20px button height minus 2px visual offset
+    // (see NotifyItemContent.qml closePlaceHolder topMargin: -height / 2 + 2)
+    readonly property int closeButtonOverhang: 8
     property var bubble: model
     property int maxCount: 3
     // ListView 的 remove 动画执行的时候,remove Item的index会以负数的方式出现
     property int realIndex: index < 0 ? ListView.view.count + index : index;
 
     height: bubbleContent.height
     z: -realIndex
+
+    HoverHandler {
+        id: delegateHoverHandler
+        margin: delegateRoot.closeButtonOverhang
+        onHoveredChanged: {
+            Applet.setHoveredId(hovered && delegateRoot.bubble ? delegateRoot.bubble.id : 0)
+        }
+    }
+
     Bubble {
         id: bubbleContent
         width: 360
+        anchors.right: parent.right
+        anchors.rightMargin: 10
         bubble: delegateRoot.bubble
+        parentHovered: delegateHoverHandler.hovered
 
         transformOrigin: Item.Top
 

panels/notification/bubble/package/main.qml

@@ -91,21 +91,24 @@ Window {
 
     ListView  {
         id: bubbleView
-        width: 360
+        // Close button overhang: half of 20px button height minus 2px visual offset
+        // (see NotifyItemContent.qml closePlaceHolder topMargin: -height / 2 + 2)
+        readonly property int closeButtonOverhang: 8
+        width: root.width
         height: contentHeight
         anchors {
             right: parent.right
             bottom: parent.bottom
-            rightMargin: 10
+            rightMargin: 0
             bottomMargin: 10
         }
 
         function updateInputRegion() {
             root.DLayerShellWindow.setInputRegionRect(
                 Math.ceil(bubbleView.x),
-                Math.ceil(bubbleView.y),
-                Math.ceil(bubbleView.width), 
-                Math.ceil(Math.max(10, bubbleView.contentHeight))
+                Math.ceil(bubbleView.y - bubbleView.closeButtonOverhang),
+                Math.ceil(root.width),
+                Math.ceil(Math.max(10, bubbleView.contentHeight) + bubbleView.closeButtonOverhang)
             )
         }
         onContentHeightChanged: updateInputRegion()
@@ -169,23 +172,5 @@ Window {
         delegate: BubbleDelegate {
             maxCount: model.bubbleCount
         }
-
-        HoverHandler {
-            onPointChanged: {
-                const local = point.position
-                let hoveredItem = bubbleView.itemAt(local.x, local.y)
-                if (hoveredItem && hoveredItem.bubble) {
-                    Applet.setHoveredId(hoveredItem.bubble.id)
-                } else {
-                    Applet.setHoveredId(0)
-                }
-            }
-
-            onHoveredChanged: {
-                if (!hovered) {
-                    Applet.setHoveredId(0)
-                }
-            }
-        }
     }
 }