---
title: "Column Resizing & Wrapping"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Column Resizing & Wrapping}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

```{r, include = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)
```

`dtsmartr` supports flexible column presentation settings for clear and dynamic data display.

## 1. Column Resizing
Columns can be resized dynamically inside the browser:
- Hover over the right edge of any column header to reveal a blue drag handle.
- Drag left or right to change column widths to fit your data.

## 2. Auto Text-Wrapping
When columns contain long strings (e.g. sentences, address logs, or uppercase category labels), the grid wraps text automatically onto multiple lines:
- The virtualized grid adjusts row heights dynamically.
- Alignment remains perfect, and viewport performance stays smooth.

## 3. Custom Default Hidden Columns
You can set columns to be hidden by default on load using the `hidden_columns` parameter in `dtsmartr_options()`:

```r
library(dtsmartr)

dtsmartr(
  mtcars,
  options = dtsmartr_options(
    hidden_columns = c("mpg", "cyl")
  )
)
```

## 4. Toggle Header Summaries
By default, column headers show a Kaggle-style summary micro-dashboard (histograms for numbers, stacked completeness bar charts for categories, evolutionary data ranges). You can turn this off to render a compact layout:

```r
# Collapses headers to standard compact labels
dtsmartr(
  mtcars,
  options = dtsmartr_options(
    header_summary = FALSE
  )
)
```
