Kuika's Thumbnail element is used to show small preview images in applications. It is often used to link to a larger version of an image or video, or to give a brief idea of the content. Thumbnail elements help draw attention to important content in the interface by quickly providing visual information to users. For example, they can be used to show product images in a product catalog or small previews of videos in a video gallery. In this tutorial, you will learn how to create visual previews in your application using the Thumbnail element.

The Thumbnail element is only supported by web applications.

This training content consists of the following topics:

Adding a Thumbnail element,
Thumbnail element properties,
Thumbnail element usage,
Authorization,
Visibility,
Editability,
Customize the interface design with Style Panel,
Actions.

Add Thumbnail Element

After logging in to the Kuika platform, open the project you will work on from the “Apps” screen.

In the “UI Design” (1) module, drag and drop the Thumbnail element (4) under the “Display” (3) category from the “Elements” (2) panel on the left edge.

Thumbnail Element Properties

Located in the Properties panel:

Value: You can add a static value to the Value field, or you can dynamically display a status, Thumbnail element content or the value of an action result via Symbol Picker.
Placeholder Image: Placeholder is the image shown when there is no Image value. If no content is loaded, the user will be shown this image instead of an empty space.
Zoom On Click: The Zoom On Click property determines whether clicking on thumbnails will display a larger version of the image. When you activate the switch, you can switch from a small preview to a full-size image.
Image Fit: The Thumbnail element can have a custom size based on the dimensions specified in the Styling > Layout tab, or it can be scaled to the dimensions of the parent element. In this case, you can specify how the image to be displayed fits into the Thumbnail frame.
Position: You can determine the position of the image to be displayed in the Thumbnail element by selecting it from the drop-down menu (bottom, center, right, left, top).

Thumbnail Element Usage

Click Value in the “Properties” panel on the right side. Select “Uploaded Images” from the drop-down menu. There are “ADD IMAGE” and “GENERATE WITH AI” buttons in the image library.
ADD IMAGE: You can add images from your device by drag and drop or by selecting them from your computer.
GENERATE WITH AI: When you click on the button, a chatbot opens. As a result of the definition sentences you write to the chatbot, artificial intelligence generates images that are not available in browsers. To add the generated images to the Image Library, you can click the download icon in the upper right corner of each image to add the image to the library.
Next, add the “Set Value Of” action. To add the Set Value Of action, select OnClick → UIControl → Set Value Of from the “+ADD ACTION” button on the right side.
After the action is created, select the Thumbnail element in the window that opens. When you select the Thumbnail element, the Value parameter will appear automatically.
Click Symbol Picker to fill in the Value parameter:
Action Results → Upload File → Data.
Finally, preview the application by clicking the “Run” button on the upper right side. Clicking the button will open a screen for uploading files from your device. Here you can select either a PDF or an image file. If the selected file is a PDF, it will be displayed with the PDF icon and if it is an image, it will be displayed with the preview image.

Authorization.

You can customize user access with “Anonymous Access” and “All Roles Access” authorization options on the screens and elements of your application. While “Anonymous Access” enables access without any account information query, “All Roles Access” provides access by verifying user account information.

For element level authorization, you can manage the security and user experience of your application by selecting the relevant element and editing the “Authorization” settings from the Properties panel.

Visibility.

It allows you to adjust the visibility of screens or elements. Visibility in Elements allows you to regulate visibility based on a specific state or condition. For each element, you can make it always visible, hidden, or visible and hidden depending on a condition.

Click on the element on the screen.
Open the “Properties” panel on the right side.
Click on the “Visibility” field and make one of the following selections according to the needs of your application. Kuika offers Always Visible, Hidden, Sometimes Visible options to control the visibility of the screens in your application.

Always Visible: Ensures that the screens in your app are always visible. ‍
Hidden: Allows hiding screens in your application. ‍
Sometimes Visible: Makes screens in your application conditionally visible.

Editability

Allows you to make elements editable.

Enabled: Selecting this option makes the element editable.
Disabled: In this case, the element cannot be edited.
Sometimes Enabled: This option means that the element is sometimes editable and sometimes not, depending on certain conditions.

Customize the İnterface Design with Style Panel

By customizing your elements with the Styling Panel, you can create unique and impressive user interfaces in your web and mobile applications.

The sections defined below vary depending on the element.

Layout‍: Here you can make visual adjustments such as sizing, alignment and padding of elements. These settings also affect the layout of other elements within the element. Properties include Size, Min Size and Align; however, some elements may not support the Display property.
Text: The element's text properties can be edited here through font family, style, color, size, spacing and other options. This section supports all Text related adjustments.
Fill: You can use the Fill setting to customize the element's background with color or images.
Border: You can give your elements a more aesthetic look by adding borders and adjusting the corner radii.
Shadow: You can add a shadow effect to elements used in web applications to give a sense of depth. However, the shadow feature may not be supported as some elements are not suitable for mobile applications.

Actions.

Kuika contains system actions such as Arithmetic, Authorization, Condition, Device, Export, Geolocation, Invers, Local Storage, Multi Language, Navigation, Notification, Payment, UI Control, Process Administration, Process Automation, Trigger, Process Automation, Process Administration and String Operations.

In addition to system actions, you can also use SQL actions that you create yourself.

To add actions to elements, you can use the “+ADD ACTION” button from the Properties panel on the right side.