[Bug]: Overflow On Windows Using Webview

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Description

When trying to authenticate using the flutter_web_auth_2 package on a Windows machine, a new window is opened which then gives overflow exceptions. The error message indicates that a RenderFlex has overflowed by 56 pixels on the bottom, causing the content to be cut off.

Image

The error message is as follows:

======== Exception caught by rendering library ===================================================== The following assertion was thrown during layout: A RenderFlex overflowed by 56 pixels on the bottom.

The relevant error-causing widget was: Column Column:file:///D:/Development/Projects/XXX/App/lib/features/authentication/presentation/views/sign_in_view.dart:48:20 The overflowing RenderFlex has an orientation of Axis.vertical. The edge of the RenderFlex that is overflowing has been marked in the rendering with a yellow and black striped pattern. This is usually caused by the contents being too big for the RenderFlex.

Consider applying a flex factor (e.g. using an Expanded widget) to force the children of the RenderFlex to fit within the available space instead of being sized to their natural size. This is considered an error condition because it indicates that there is content that cannot be seen. If the content is legitimately bigger than the available space, consider clipping it with a ClipRect widget before putting it in the flex, or using a scrollable container rather than a Flex, like a ListView.

Q&A

Q: What is the issue with the flutter_web_auth_2 package on Windows?

A: The issue is that when trying to authenticate, a new window is opened which then gives overflow exceptions. The error message indicates that a RenderFlex has overflowed by 56 pixels on the bottom, causing the content to be cut off.

Q: What is the error message indicating?

A: The error message is indicating that there is content that cannot be seen because it is overflowing the available space. This is usually caused by the contents being too big for the RenderFlex.

Q: How can I fix this issue?

A: To fix this issue, you can apply a flex factor (e.g. using an Expanded widget) to force the children of the RenderFlex to fit within the available space instead of being sized to their natural size. Alternatively, you can clip the content with a ClipRect widget before putting it in the flex, or use a scrollable container rather than a Flex, like a ListView.

Q: What is the specific RenderFlex in question?

A: The specific RenderFlex in question is: RenderFlex#813cd relayoutBoundary=up3 OVERFLOWING. This RenderFlex has an orientation of Axis.vertical and is overflowing by 56 pixels on the bottom.

Q: What are the constraints of the RenderFlex?

A: The constraints of the RenderFlex are: BoxConstraints(w=632.0, 0.0<=h<=40.0). This means that the width of the RenderFlex is fixed at 632.0 pixels, and the height is constrained to be between 0.0 and 40.0 pixels.

Q: What is the size of the RenderFlex?

A: The size of the RenderFlex is: Size(632.0, 40.0). This means that the RenderFlex is currently sized to be 632.0 pixels wide and 40.0 pixels high.

Q: What is the direction of the RenderFlex?

A: The direction of the RenderFlex is: vertical. This means that the RenderFlex is laid out vertically.

Q: What is the main axis of the RenderFlex?

A: The main axis of the RenderFlex is: max. This means that the RenderFlex is laid out to fill the maximum available space.

Q: What is the cross axis of the RenderFlex?

A: The cross axis of the RenderFlex is: center. This means that the RenderFlex is centered horizontally.

Q: What is the vertical direction of the RenderFlex?

A: The vertical direction of the RenderFlex is: down. This means that the RenderFlex is laid out from top to bottom.

Q: What is the spacing of the RenderFlex?

A: The spacing of the RenderFlex is: 0.0. This means that there is no spacing between the children of the RenderFlex.

Troubleshooting Steps

  1. Check the constraints of the RenderFlex to ensure that they are not too tight.
  2. Check the size of the RenderFlex to ensure that it is not too large.
  3. Check the direction of the RenderFlex to ensure that it is laid out correctly.
  4. Check the main axis of the RenderFlex to ensure that it is laid out to fill the maximum available space.
  5. Check the cross axis of the RenderFlex to ensure that it is centered horizontally.
  6. Check the vertical direction of the RenderFlex to ensure that it is laid out from top to bottom.
  7. Check the spacing of the RenderFlex to ensure that there is no spacing between the children.

Additional Resources