Method ensure_cursor_visible

src/text_input.rs:367–378

Update scroll offset to ensure cursor is visible within `visible_width`. `cursor_x` is the pixel x-position of the cursor relative to text start.

(&mut self, cursor_x: f32, visible_width: f32)

    /// Update scroll offset to ensure cursor is visible within `visible_width`.
    /// `cursor_x` is the pixel x-position of the cursor relative to text start.
    pub fn ensure_cursor_visible(&mut self, cursor_x: f32, visible_width: f32) {
        if cursor_x - self.scroll_offset > visible_width {
            self.scroll_offset = cursor_x - visible_width;
        }
        if cursor_x - self.scroll_offset < 0.0 {
            self.scroll_offset = cursor_x;
        }
        // Clamp scroll_offset to valid range
        if self.scroll_offset < 0.0 {
            self.scroll_offset = 0.0;
        }
    }

    /// Update vertical scroll offset to keep cursor visible in multiline mode.
    /// `cursor_line` is the 0-based line index the cursor is on.