Nextion is a powerful graphical user interface (GUI) development platform for embedded systems. It allows developers to easily create custom GUIs for their devices without the need for extensive coding. One of the most common GUI elements is the button. Buttons can be used to trigger actions, navigate between screens, and more. In this article, we will show you how to make a button into a circle using Nextion.
To make a button into a circle, you will need to use the “circle” property. The “circle” property can be set to “true” or “false”. When the “circle” property is set to “true”, the button will be drawn as a circle. You can also specify the radius of the circle using the “radius” property. The “radius” property is measured in pixels.
Moreover, you can customize the appearance of the button by setting the “background color,” “text color,” and “font” properties. The “background color” property specifies the color of the button’s background. The “text color” property specifies the color of the button’s text. The “font” property specifies the font of the button’s text.
Changing the Button’s Shape to Circle
To change a button’s shape to a circle, open the Nextion Editor and select the button you want to edit. In the “Properties” panel, you’ll find the “Shape” property. Click on the drop-down menu and select “Circle”.
Alternatively, you can use the following code to change the button’s shape:
“`
btn.shape = “circle”
“`
Customizing the Circle Button
Once you’ve changed the button’s shape to a circle, you can further customize its appearance by adjusting the following properties:
| Property | Description |
|---|---|
| radius | The radius of the circle button in pixels. |
| borderWidth | The width of the button’s border in pixels. |
| borderColor | The color of the button’s border. |
| fillColor | The color of the button’s interior. |
| image | The path to an image file to be displayed on the button. |
| imagePos | The position of the image on the button. |
Example
The following code demonstrates how to create a custom circle button:
“`
btn.shape = “circle”
btn.radius = 50
btn.borderWidth = 2
btn.borderColor = “#FF0000”
btn.fillColor = “#00FF00”
btn.image = “button.png”
btn.imagePos = “center”
“`
This code will create a circular button with a red border, a green interior, a radius of 50 pixels, and a centered image.
Configuring the Circle Button’s Appearance
Customizing the circle button’s visual attributes involves setting specific parameters in the Nextion Editor’s object properties panel. The following steps guide you through the configuration process:
1. Set Button Type to “RoundRect”
In the “Object” section, select “Button” as the object type. Then, under “Style”, choose “RoundRect” to create a circle-shaped button.
2. Adjust Corner Radius
The “Corner Radius” property determines the curvature of the circle’s corners. Set this value to “0” for a perfect circle.
3. Configure Background Color and Border
Use the “BKG Color” and “Border Color” properties to specify the fill color and outline color of the circle button, respectively.
4. Setting Advanced Appearance Options
The “Advanced” section offers additional customization options for the circle button:
| Property | Description |
|---|---|
| Gradient | Adds a gradient effect to the button’s background |
| Image | Inserts an image within the button’s boundaries |
| Align/Scale | Controls the position and size of the image within the button |
| Alpha Transparency | Adjusts the transparency of the button’s overall appearance |
Event Handling for the Circle Button
The circle button supports a wide range of event handling options, allowing you to customize its behavior in response to user actions. Here are the most common event handlers used with the circle button:
onTap(event)
The `onTap` event handler is triggered when the user taps on the circle button. This event can be used to execute a specific action or function when the button is clicked.
To add an `onTap` event handler to the circle button, use the following syntax:
“`
my_circle_button.onTap(function() {
// Code to execute when the button is clicked
});
“`
onTouchStart(event) and onTouchEnd(event)
The `onTouchStart` and `onTouchEnd` event handlers are triggered when the user touches and releases the circle button, respectively. These events can be used to perform different actions based on the user’s touch gesture.
To add `onTouchStart` and `onTouchEnd` event handlers to the circle button, use the following syntax:
“`
my_circle_button.onTouchStart(function() {
// Code to execute when the button is touched
});
my_circle_button.onTouchEnd(function() {
// Code to execute when the button is released
});
<h4><ins>onHold(duration)</ins></h4>
<p>The `onHold` event handler is triggered when the user holds the circle button for a specified duration. This event can be used to perform actions that require a sustained press, such as opening a context menu.</p>
<p>To add an `onHold` event handler to the circle button, use the following syntax:</p>
my_circle_button.onHold(500, function() {
// Code to execute when the button is held for 500ms
});
Nextion How To Make A Button Into A Circle
Nextion is a graphical user interface (GUI) for human-machine interfaces (HMIs). It is a popular choice for creating user interfaces for embedded systems, such as those found in industrial machinery, medical devices, and consumer electronics. One of the most common elements used in Nextion GUIs is the button. By default, buttons are rectangular, but it is possible to create circular buttons.
To create a circular button in Nextion, you will need to use the “ImageButton” object. The ImageButton object allows you to specify an image file to be used as the button’s background. You can then use the “Shape” property to specify that the button should be circular.
Here are the steps on how to create a circular button in Nextion:
- Open the Nextion Editor and create a new project.
- Select the “ImageButton” object from the Toolbox.
- Drag and drop the ImageButton object onto the Form.
- In the Properties window, set the following properties:
- Name: The name of the button.
- Image: The image file to be used as the button’s background.
- Shape: Circle.
- Size: The size of the button.
- Position: The position of the button.
- Click the “OK” button to save the changes.
People Also Ask About Nextion How To Make A Button Into A Circle
Can I use any image file as the button’s background?
Yes, you can use any image file as the button’s background. However, the image file must be in a supported format, such as BMP, JPG, or PNG.
Can I change the size and position of the button?
Yes, you can change the size and position of the button. To do this, simply select the button and then use the Properties window to adjust the Size and Position properties.
How do I add text to the button?
To add text to the button, you can use the “Text” property. The Text property allows you to specify the text that will be displayed on the button.
