101 lines
3.6 KiB
C#
101 lines
3.6 KiB
C#
// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
|
|
// software and associated documentation files (the "Software"), to deal in the Software
|
|
// without restriction, including without limitation the rights to use, copy, modify, merge,
|
|
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
|
|
// to whom the Software is furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all copies or
|
|
// substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
|
|
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
|
|
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
|
|
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
// DEALINGS IN THE SOFTWARE.
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using UnityEngine;
|
|
using UnityEngine.UIElements;
|
|
|
|
namespace Unity.CodeEditor.Rendering
|
|
{
|
|
internal sealed class ColumnRulerRenderer : IBackgroundRenderer
|
|
{
|
|
private Color _color;
|
|
private IEnumerable<int> _columns;
|
|
private readonly TextView _textView;
|
|
private readonly List<VisualElement> _rulerElements = new List<VisualElement>();
|
|
|
|
static readonly float DefaultThickness = 1f;
|
|
|
|
internal ColumnRulerRenderer(TextView textView)
|
|
{
|
|
_textView = textView ?? throw new ArgumentNullException(nameof(textView));
|
|
_textView.BackgroundRenderers.Add(this);
|
|
_textView.VisualLinesChanged += OnVisualLinesChanged;
|
|
}
|
|
|
|
public KnownLayer Layer => KnownLayer.Background;
|
|
|
|
internal void SetRuler(IEnumerable<int> columns, Color color)
|
|
{
|
|
_columns = columns;
|
|
_color = color;
|
|
UpdateRulerVisuals();
|
|
}
|
|
|
|
public void Draw(TextView textView)
|
|
{
|
|
}
|
|
|
|
private void OnVisualLinesChanged(object sender, EventArgs e)
|
|
{
|
|
UpdateRulerVisuals();
|
|
}
|
|
|
|
private void UpdateRulerVisuals()
|
|
{
|
|
if (_columns == null)
|
|
{
|
|
for (int i = 0; i < _rulerElements.Count; i++)
|
|
_rulerElements[i].visible = false;
|
|
return;
|
|
}
|
|
|
|
int needed = 0;
|
|
foreach (var col in _columns)
|
|
needed++;
|
|
|
|
while (_rulerElements.Count < needed)
|
|
{
|
|
var el = new VisualElement();
|
|
el.pickingMode = PickingMode.Ignore;
|
|
el.style.position = Position.Absolute;
|
|
el.style.top = 0;
|
|
el.style.bottom = 0;
|
|
el.style.width = DefaultThickness;
|
|
_rulerElements.Add(el);
|
|
_textView.Add(el);
|
|
}
|
|
|
|
int index = 0;
|
|
foreach (var column in _columns)
|
|
{
|
|
var el = _rulerElements[index];
|
|
float xPos = _textView.WideSpaceWidth * column - _textView.HorizontalOffset;
|
|
el.transform.position = new Vector3(xPos, 0, 0);
|
|
el.style.backgroundColor = _color;
|
|
el.visible = true;
|
|
index++;
|
|
}
|
|
|
|
for (int i = index; i < _rulerElements.Count; i++)
|
|
_rulerElements[i].visible = false;
|
|
}
|
|
}
|
|
}
|