Fix wrappanel new row issue [CommunityToolkit/Windows#759]

lgztx96 · lgztx96 · commit 84b125cbd772 · 2025-12-19T11:19:08.000+08:00
diff --git a/XamlToolkit.WinUI.Controls/WrapPanel/WrapPanel.cpp b/XamlToolkit.WinUI.Controls/WrapPanel/WrapPanel.cpp
@@ -103,7 +103,7 @@ namespace winrt::XamlToolkit::WinUI::Controls::implementation
                 }
 
                 auto desiredMeasure = UvMeasure(orientation, child.DesiredSize());
-                if ((desiredMeasure.U + position.U + paddingEnd.U) > parentMeasure.U)
+                if ((desiredMeasure.U + position.U + paddingEnd.U) > parentMeasure.U || position.U >= parentMeasure.U)
                 {
                     // next row!
                     position.U = paddingStart.U;

Original file line number	Diff line number	Diff line change
`@@ -103,7 +103,7 @@ namespace winrt::XamlToolkit::WinUI::Controls::implementation`
`103`	`103`	`}`
`104`	`104`
`105`	`105`	`auto desiredMeasure = UvMeasure(orientation, child.DesiredSize());`
`106`		`- if ((desiredMeasure.U + position.U + paddingEnd.U) > parentMeasure.U)`
	`106`	`+ if ((desiredMeasure.U + position.U + paddingEnd.U) > parentMeasure.U \|\| position.U >= parentMeasure.U)`
`107`	`107`	`{`
`108`	`108`	`// next row!`
`109`	`109`	`position.U = paddingStart.U;`