Zoom in or out
This document describes how to zoom on the whiteboard being displayed.
The image below displays the synchronized zooming effect using the web platform as an example, and the effect on mobile devices is the same.
Prerequisites
Create a whiteboard by referring to Create a super board.
Implementation steps
Enabled by default
The zooming function is enabled by default. You can use your hands to zoom in and out on a whiteboard.
Disable zooming
If you call the setToolType method to use click, you can not zoom in and out.
Enable zooming
Call the setOperationMode method to set the operation mode to ZegoSuperBoardOperationMode.zoom.value to enable the zooming function of ZegoSuperBoard.
// Call the setOperationMode interface to set the operation mode to zoom mode.
ZegoSuperBoardManager.instance.setOperationMode(ZegoSuperBoardOperationMode.zoom.value);Enable zooming and drawing at the same time
Call the setOperationMode method with the argument ZegoSuperBoardOperationMode.zoom.value|ZegoSuperBoardOperationMode.draw.value to enable both drawing and zooming functions simultaneously.
ZegoSuperBoardManager.instance.setOperationMode(ZegoSuperBoardOperationMode.zoom.value|ZegoSuperBoardOperationMode.draw.value);Synchronize zooming
To achieve synchronized zooming across all users in the room, the zooming user needs to call the enableSyncScale method to enable the synchronization feature. Other users need to call the enableResponseScale method to enable the response capability.
// To enable the synchronization
ZegoSuperBoardManager.instance.enableSyncScale(true);
// To enable the response
ZegoSuperBoardManager.instance.enableResponseScale(true);