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STTextBox.Interface.cs
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233 lines (214 loc) · 9.9 KB
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.ComponentModel;
namespace ST.Library.UI.STTextBox
{
partial class STTextBox
{
public class Core
{
private Dictionary<ITextStyleMonitor, TextStyleRange> m_dic_cache_style;
public int FontHeight { get { return this.ITextBoxRender.GetFontHeight(); } }
public int LineHeight { get { return this.ITextBoxRender.GetFontHeight() + this.TextBox.GetIntYSize(this.TextBox.LineSpacing); } }
public ITextBoundary IGraphemeSplitter { get; internal set; }
public ITextBoundary IWordSplitter { get; internal set; }
public ISTTextBoxRender ITextBoxRender { get; internal set; }
public IEmojiRender IEmojiRender { get; internal set; }
public ITextView ITextView { get; internal set; }
public ITextHistory ITextHistory { get; internal set; }
public ITextStyleMonitor[] ITextStyleMonitors { get; internal set; }
public Rectangle ViewRectangle { get; internal set; }
public STTextBox TextBox { get; private set; }
public TextManager TextManager { get; private set; }
public STTextBoxCaretInfo Caret { get; private set; }
public STTextBoxScrollInfo Scroll { get; private set; }
public STTextBoxSelectionInfo Selection { get; private set; }
internal Core(STTextBox textBox) {
if (textBox == null) {
throw new ArgumentNullException("textBox");
}
this.TextBox = textBox;
m_dic_cache_style = new Dictionary<ITextStyleMonitor, TextStyleRange>();
//GraphemeSplitter.CreateArrayCache();
//WordSplitter.CreateArrayCache();
this.IGraphemeSplitter = new GraphemeSplitter();
this.IWordSplitter = new WordSplitter();
this.ITextBoxRender = new STTextBoxGDIPRender();
this.ITextHistory = new TextHistory(10);
this.ITextView = new NoWrapTextView();
this.TextManager = new TextManager();
this.Caret = new STTextBoxCaretInfo();
this.Scroll = new STTextBoxScrollInfo();
this.Selection = new STTextBoxSelectionInfo();
var textManager = this.TextManager;
textManager.TextStartChange += (s, e) => {
this.ITextBoxRender.BeginPaint();
this.ITextView.OnTextStartChange(this.ITextBoxRender, e);
};
textManager.LineAdded += (s, e) => this.ITextView.OnLineAdded(this.ITextBoxRender, e);
textManager.LineChanged += (s, e) => this.ITextView.OnLineChanged(this.ITextBoxRender, e);
textManager.LineRemoved += (s, e) => this.ITextView.OnLineRemoved(this.ITextBoxRender, e);
textManager.LineCountChanged += (s, e) => {
this.ITextView.OnLineCountChanged(this.ITextBoxRender, e);
this.ITextView.OnCalcTextRectangle();
};
textManager.TextChanged += (s, e) => {
m_dic_cache_style.Clear();
if (this.ITextStyleMonitors != null) {
foreach (var m in this.ITextStyleMonitors) {
m.OnTextChanged(textManager, e.TextHistoryRecord);
}
}
this.ITextView.OnTextChanged(this.ITextBoxRender, e);
this.ITextBoxRender.EndPaint();
this.ITextView.OnCalcScroll(this.Scroll);
this.TextBox.Invalidate();
};
this.ITextBoxRender.BindControl(textBox);
this.ITextView.Init(this);
this.Selection.SelectionChanged += (s, e) => {
if (this.ITextStyleMonitors == null || this.ITextStyleMonitors.Length == 0) {
return;
}
m_dic_cache_style.Clear();
foreach (var m in this.ITextStyleMonitors) {
m.OnSelectionChanged(textManager, this.Selection.StartIndex, this.Selection.Length);
}
};
}
public ISTTextBoxRender SetTextBoxRender(ISTTextBoxRender render) {
//TODO: move out
var old = this.ITextBoxRender;
if (old == render) return old;
old.UnbindControl();
render.BindControl(this.TextBox);
this.ITextBoxRender = render;
return old;
}
public ITextStyleMonitor[] SetTextStyleMonitors(params ITextStyleMonitor[] monitors) {
var old = this.ITextStyleMonitors;
string strText = this.TextManager.GetText();
List<ITextStyleMonitor> lst = new List<ITextStyleMonitor>();
foreach (var m in monitors) {
if (m == null) {
continue;
}
lst.Add(m);
m.Init(strText);
}
this.ITextStyleMonitors = lst.ToArray();
m_dic_cache_style.Clear();
return old;
}
public bool IsEmoji(string strChar) {
if (this.IEmojiRender == null) return false;
return this.IEmojiRender.IsEmoji(strChar);
}
public int GetStringWidth(string strText, TextStyle textStyle, int nLeftWidth) {
if (this.IsEmoji(strText)) {
return this.FontHeight;
}
if (strText.Length > 1 && strText[strText.Length - 1] >= '\uFE00' && strText[strText.Length - 1] <= '\uFE0F') {
strText = strText.Substring(0, strText.Length - 1);
}
return this.ITextBoxRender.GetStringWidth(strText, textStyle, nLeftWidth) + this.TextBox.GetIntXSize(this.TextBox.CharSpacing);
}
public TextStyle GetStyleFromCharIndex(int nIndex) {
TextStyle style = new TextStyle();
if (this.ITextStyleMonitors == null || this.ITextStyleMonitors.Length == 0) {
style.ForeColor = this.TextBox.ForeColor;
return style;
}
var range = TextStyleRange.Empty;
foreach (var m in this.ITextStyleMonitors) {
if (m_dic_cache_style.ContainsKey(m)) {
range = m_dic_cache_style[m];
if (nIndex >= range.Index && nIndex < range.Index + range.Length) {
if (range.Style.RejectMix) return range.Style;
style.Mix(range.Style);
continue;
}
}
range = m.GetStyleFromCharIndex(nIndex);
if (range == TextStyleRange.Empty) continue;
if (m_dic_cache_style.ContainsKey(m)) {
m_dic_cache_style[m] = range;
} else {
m_dic_cache_style.Add(m, range);
}
if (range.Style.RejectMix) return range.Style;
style.Mix(range.Style);
}
if (style.ForeColor.A == 0) {
style.ForeColor = this.TextBox.ForeColor;
}
return style;
}
}
public ISTTextBoxRender SetTextBoxRender(ISTTextBoxRender render) {
if (render == null) {
throw new ArgumentNullException("render");
}
return m_core.SetTextBoxRender(render);
}
public ITextBoundary SetGraphemeSplitter(ITextBoundary textBoundary) {
if (textBoundary == null) {
throw new ArgumentNullException("textBoundary");
}
if (m_core.IGraphemeSplitter == textBoundary) {
return textBoundary;
}
var old = m_core.IGraphemeSplitter;
m_core.IGraphemeSplitter = textBoundary;
return old;
}
public ITextBoundary SetWordSplitter(ITextBoundary textBoundary) {
if (textBoundary == null) {
throw new ArgumentNullException("textBoundary");
}
if (m_core.IWordSplitter == textBoundary) {
return textBoundary;
}
var old = m_core.IWordSplitter;
m_core.IWordSplitter = textBoundary;
return old;
}
public IEmojiRender SetEmojiRender(IEmojiRender emojiRender) {
if (emojiRender == null) {
throw new ArgumentNullException("emojiRender");
}
if (m_core.IEmojiRender == emojiRender) {
return emojiRender;
}
var old = m_core.IEmojiRender;
m_core.IEmojiRender = emojiRender;
return old;
}
public ITextHistory SetTextHistory(ITextHistory textHistory) {
if (m_core.ITextHistory == textHistory) {
return textHistory;
}
var old = m_core.ITextHistory;
m_core.ITextHistory = textHistory;
return old;
}
public ITextView SetTextView(ITextView textView) {
if (textView == null) {
throw new ArgumentNullException("textView");
}
if (m_core.ITextView == textView) {
return textView;
}
var old = m_core.ITextView;
m_core.ITextView = textView;
textView.Init(m_core);
return old;
}
public ITextStyleMonitor[] SetTextStyleMonitors(params ITextStyleMonitor[] monitors) {
return m_core.SetTextStyleMonitors(monitors);
}
}
}