---
description: >-
  This feature enables smooth and animated transitions when dragging the
  splitter or programmatically changing its position, enhancing the visual
  fluidity of the control.
---

# Animation & Smooth Drag

## Overview

The Animation & Smooth Drag feature of the SiticoneSplitContainer control introduces visual enhancements that make splitter movement appear fluid and responsive. By leveraging properties like `EnableSmoothDrag`, `DragUpdateInterval`, `EnableAnimatedSplitter`, `AnimationInterval`, and `AnimationStep`, developers can provide a more engaging user experience during both manual dragging and automated splitter adjustments.

***

### Key Points

| Aspect                   | Description                                                                                                                                           |
| ------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------- |
| Smooth Drag Activation   | Use `EnableSmoothDrag` and `DragUpdateInterval` to control real-time visual updates as the splitter is moved by the user.                             |
| Animated Transitions     | `EnableAnimatedSplitter`, `AnimationInterval`, and `AnimationStep` allow for animated movements when changing the splitter position programmatically. |
| Enhanced User Experience | The combination of smooth dragging and animated transitions creates a visually appealing and interactive resizing experience.                         |
| Configurable Parameters  | Developers can fine-tune the animation speed and update rate to best match the application's responsiveness and aesthetic requirements.               |

***

### Best Practices

| Recommendation                   | Details                                                                                                                                                        |
| -------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Balance Performance and Fluidity | Adjust `DragUpdateInterval` and `AnimationInterval` to achieve smooth animations without degrading overall application performance.                            |
| Use Animation Selectively        | Employ animated transitions for programmatic changes (e.g., resetting or toggling the splitter) rather than every minor user interaction to avoid distraction. |
| Test on Target Hardware          | Validate smooth drag and animation settings on multiple devices and screen resolutions to ensure consistent behavior across environments.                      |
| Combine with State Management    | Integrate animations with state persistence to provide seamless transitions when restoring the splitter position on control reloads.                           |

***

### Common Pitfalls

| Pitfall                   | Explanation                                                                                                    | Mitigation Strategy                                                                               |
| ------------------------- | -------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
| Excessive Animation Delay | Setting a high `AnimationInterval` can make the animation feel sluggish, negatively impacting user experience. | Optimize the interval settings to balance smoothness and responsiveness.                          |
| Overuse of Animations     | Applying animations on every minor movement may cause visual distraction or performance issues.                | Limit animations to programmatically triggered changes rather than continuous user drag events.   |
| Ignoring Timer Cleanup    | Failure to properly stop or dispose of timers (for smooth drag or animation) can lead to resource leaks.       | Always stop and dispose timers in the control’s `Dispose` method or when animations are disabled. |

***

### Usage Scenarios

| Scenario                      | Description                                                                                                    | Example Use Case                                                                                                        |
| ----------------------------- | -------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- |
| Programmatic Splitter Reset   | Animate the splitter back to a default or saved position after a user action (e.g., clicking a reset button).  | Smoothly transition the splitter to the center of the control after the user clicks "Reset Position".                   |
| Dynamic Resizing Feedback     | Provide real-time visual updates during user dragging to ensure a responsive UI experience.                    | Update the visual representation of the splitter as the user drags, ensuring smooth transitions even on fast movements. |
| Gradual Panel Reveal/Collapse | Use animations to visually indicate the expanding or collapsing of panels for a more engaging user experience. | Animate the splitter to collapse a panel when its size drops below a threshold, rather than abruptly hiding it.         |

***

### Code Examples

#### 1. Enabling Smooth Drag

This example demonstrates how to enable and configure smooth drag behavior:

```csharp
public class SmoothDragForm : Form
{
    private SiticoneSplitContainer splitContainer;

    public SmoothDragForm()
    {
        InitializeComponent();
        splitContainer = new SiticoneSplitContainer
        {
            Dock = DockStyle.Fill,
            // Enable smooth dragging for real-time visual feedback
            EnableSmoothDrag = true,
            DragUpdateInterval = 16 // Update approximately every 16 ms (roughly 60 FPS)
        };

        this.Controls.Add(splitContainer);
    }
}
```

#### 2. Enabling Animated Splitter Movement

The following example illustrates how to set up animated transitions for programmatically changing the splitter position:

```csharp
public class AnimatedSplitterForm : Form
{
    private SiticoneSplitContainer splitContainer;
    private Button animateButton;

    public AnimatedSplitterForm()
    {
        InitializeComponent();
        splitContainer = new SiticoneSplitContainer
        {
            Dock = DockStyle.Fill,
            // Enable animated splitter transitions
            EnableAnimatedSplitter = true,
            AnimationInterval = 15, // Set the interval for animation steps (in milliseconds)
            AnimationStep = 5       // Define the pixel movement per animation step
        };

        animateButton = new Button
        {
            Text = "Animate Splitter to Center",
            Dock = DockStyle.Top
        };

        animateButton.Click += (sender, e) =>
        {
            // Animate the splitter to the center of the container
            int targetPosition = (splitContainer.Orientation == Orientation.Vertical)
                ? splitContainer.Width / 2
                : splitContainer.Height / 2;
            // The AnimateSplitterTo method handles the animated transition
            splitContainer.AnimateSplitterTo(targetPosition);
        };

        this.Controls.Add(splitContainer);
        this.Controls.Add(animateButton);
    }
}
```

#### 3. Combining Smooth Drag and Animated Transitions

Here is an example that shows both smooth drag and animated transitions in action:

```csharp
public class CombinedAnimationForm : Form
{
    private SiticoneSplitContainer splitContainer;
    private Button resetButton;

    public CombinedAnimationForm()
    {
        InitializeComponent();
        splitContainer = new SiticoneSplitContainer
        {
            Dock = DockStyle.Fill,
            EnableSmoothDrag = true,
            DragUpdateInterval = 16,
            EnableAnimatedSplitter = true,
            AnimationInterval = 15,
            AnimationStep = 5,
            // Additional movement and snapping configurations can be applied here as needed
        };

        resetButton = new Button
        {
            Text = "Reset Position with Animation",
            Dock = DockStyle.Top
        };

        resetButton.Click += (sender, e) =>
        {
            // Animate the splitter to the center position
            int targetPosition = (splitContainer.Orientation == Orientation.Vertical)
                ? splitContainer.Width / 2
                : splitContainer.Height / 2;
            splitContainer.AnimateSplitterTo(targetPosition);
        };

        this.Controls.Add(splitContainer);
        this.Controls.Add(resetButton);
    }
}
```

***

### Review

| Aspect                     | Details                                                                                                                                                            |
| -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Visual Appeal              | Smooth drag and animated transitions enhance the user experience by making interactions feel natural and responsive.                                               |
| Ease of Integration        | With simple property settings and methods like `AnimateSplitterTo()`, adding animations requires minimal code changes while providing significant UI improvements. |
| Performance Considerations | Proper configuration of timer intervals and animation steps is crucial to balance visual smoothness with overall application performance.                          |

***

### Summary

The Animation & Smooth Drag feature in the SiticoneSplitContainer control is designed to improve the visual responsiveness of splitter movements. Whether the splitter is moved by the user or programmatically adjusted, smooth drag updates and animated transitions provide a fluid and polished user experience that is easily customizable through simple property settings.

***

### Integration Steps

| Step   | Action                                                                                                                                                    |
| ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Step 1 | Instantiate the SiticoneSplitContainer and add it to your form, setting the Dock property as required.                                                    |
| Step 2 | Enable smooth drag by setting `EnableSmoothDrag` to true and adjusting `DragUpdateInterval` for optimal performance.                                      |
| Step 3 | Enable animated transitions by setting `EnableAnimatedSplitter`, then configure `AnimationInterval` and `AnimationStep` to define the animation behavior. |
| Step 4 | Optionally, use the `AnimateSplitterTo()` method to programmatically trigger animated splitter movements based on user actions.                           |
| Step 5 | Test the animations across various screen sizes and resolutions to ensure consistent performance and appearance.                                          |

***

### Additional Resources

| Resource                       | Description                                                                                      | Example Link                                                                                                                         |
| ------------------------------ | ------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------ |
| .NET Timer Class Documentation | Provides details on using System.Windows.Forms.Timer for smooth animations and periodic updates. | [https://docs.microsoft.com/dotnet/api/system.windows.forms.timer](https://docs.microsoft.com/dotnet/api/system.windows.forms.timer) |
| WinForms Animation Techniques  | Articles and tutorials on implementing animations in WinForms applications.                      | (Link to a recommended WinForms tutorial site)                                                                                       |

***

By following this comprehensive documentation and integrating the provided code examples, developers can effectively enhance their applications with smooth and animated splitter transitions using the SiticoneSplitContainer control.
