Tools

教具

public class MemberState {
    // The current tool. Modifying it will switch tools. The following tools are available:
    // 1. selector
    // 2. pencil tool
    // 3. rectangle tool
    // 4. ellipse tool
    // 5. eraser tool
    // 6. text tool
    private String currentApplianceName;
    // The color of the line, write RGB in an array. It looks like [255, 128, 255].
    private int[] strokeColor;
    // Thickness of lines
    private Double strokeWidth;
    // Text size
    private Double textSize;
    ... setter/getter
}

Switching tools

The White SDK provides a variety of teaching aids. We can change the current tool by modifying memberState. For example, to switch the current tool to the Pencil tool, you can use the following code.

MemberState memberState = new MemberState();
memberState.setCurrentApplianceName("pencil");
room.setMemberState(memberState);

You can get the name of the tool in the current room through the following code.

room.getMemberState().getCurrentApplianceName();

Tool list

| Name | String | Description | |: --- |: --- |:: --- | | Select | selector | select, move, scale | | Pencil | pencil | draw colored tracks | | Rectangle | draw a rectangle | Ellipse | ellipse | draw a perfect circle or ellipse | | Eraser | eraser | delete track | | Text | text | edit, enter text |

Palette

The following code can modify the color of the palette.

MemberState memberState = new MemberState();
memberState.setStrokeColor(new int[]{255, 0, 0});
room.setMemberState(memberState);

The color of the palette is represented by writing RGB in an array of the form [255, 0, 0].

You can also get the color of the current palette according to the following code.

room.getMemberState().getStrokeColor();

The palette can affect the effects of the pencil, rectangle, oval, and text tools.

Prohibition of tool operation

2.2.0 New API

You can block teaching aids as follows.

// Prohibition of tool operation
room.disableDeviceInputs(true);
// Recovery tool operation
room.disableDeviceInputs(false);