456 lines
14 KiB
C#
456 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace Mesen.GUI.Debugger
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{
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[Flags]
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public enum LineSymbol
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{
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None = 0,
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Circle = 1,
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CircleOutline = 2,
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Arrow = 4,
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}
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public class LineProperties
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{
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public Color? BgColor;
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public Color? FgColor;
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public Color? OutlineColor;
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public LineSymbol Symbol;
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}
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public partial class ctrlTextbox : Control
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{
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public event EventHandler ScrollPositionChanged;
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private string[] _contents = new string[0];
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private int[] _lineNumbers = new int[0];
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private Dictionary<int, int> _lineNumberIndex = new Dictionary<int,int>();
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private Dictionary<int, LineProperties> _lineProperties = new Dictionary<int,LineProperties>();
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private bool _showLineNumbers = false;
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private bool _showLineInHex = false;
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private int _cursorPosition = 0;
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private int _scrollPosition = 0;
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private string _searchString = null;
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private string _header = null;
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public ctrlTextbox()
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{
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InitializeComponent();
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this.ResizeRedraw = true;
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this.DoubleBuffered = true;
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}
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public string[] TextLines
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{
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set
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{
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_contents = value;
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_lineNumbers = new int[_contents.Length];
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_lineNumberIndex.Clear();
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for(int i = _contents.Length - 1; i >=0; i--) {
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_lineNumbers[i] = i;
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_lineNumberIndex[i] = i;
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}
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this.Invalidate();
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}
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}
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public int LineCount
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{
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get
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{
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return _contents.Length;
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}
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}
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public int[] CustomLineNumbers
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{
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set
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{
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_lineNumbers = value;
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_lineNumberIndex.Clear();
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int i = 0;
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foreach(int line in _lineNumbers) {
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_lineNumberIndex[line] = i;
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i++;
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}
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this.Invalidate();
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}
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}
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public string Header
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{
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set
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{
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this._header = value;
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this.Invalidate();
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}
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}
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public bool Search(string searchString, bool searchBackwards, bool isNewSearch)
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{
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if(string.IsNullOrWhiteSpace(searchString)) {
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this._searchString = null;
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this.Invalidate();
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return true;
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} else {
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int startPosition;
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int endPosition;
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this._searchString = searchString.ToLowerInvariant();
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int searchOffset = (searchBackwards ? -1 : 1);
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if(isNewSearch) {
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startPosition = this.CursorPosition;
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endPosition = this.CursorPosition - searchOffset;
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if(endPosition < 0) {
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endPosition = _contents.Length - 1;
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} else if(endPosition >= _contents.Length) {
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endPosition = 0;
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}
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} else {
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startPosition = this.CursorPosition + searchOffset;
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endPosition = this.CursorPosition;
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if(startPosition < 0) {
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startPosition = _contents.Length - 1;
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} else if(startPosition >= _contents.Length) {
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startPosition = 0;
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}
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}
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for(int i = startPosition; i != endPosition; i += searchOffset) {
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string line = _contents[i].ToLowerInvariant();
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if(line.Contains(searchString)) {
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this.ScrollToLineIndex(i);
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return true;
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}
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//Continue search from start/end of document
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if(!searchBackwards && i == this._contents.Length - 1) {
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i = 0;
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} else if(searchBackwards && i == 0) {
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i = this._contents.Length - 1;
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}
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}
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this.Invalidate();
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return _contents[_cursorPosition].ToLowerInvariant().Contains(this._searchString);
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}
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}
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public void ClearLineStyles()
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{
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_lineProperties.Clear();
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this.Invalidate();
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}
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public void SetLineColor(int lineNumber, Color? fgColor = null, Color? bgColor = null, Color? outlineColor = null, LineSymbol symbol = LineSymbol.None)
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{
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if(lineNumber != -1) {
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if(_lineNumberIndex.ContainsKey(lineNumber)) {
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LineProperties properties = new LineProperties() {
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BgColor = bgColor,
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FgColor = fgColor,
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OutlineColor = outlineColor,
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Symbol = symbol
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};
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_lineProperties[_lineNumberIndex[lineNumber]] = properties;
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this.Invalidate();
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}
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}
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}
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public int GetLineIndex(int lineNumber)
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{
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if(_lineNumberIndex.ContainsKey(lineNumber)) {
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return _lineNumberIndex[lineNumber];
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} else {
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foreach(int line in _lineNumbers) {
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if(line > lineNumber) {
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return Math.Max(0, GetLineIndex(line) - 1);
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}
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}
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}
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return -1;
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}
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public int GetLineNumber(int lineIndex)
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{
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return _lineNumbers[lineIndex];
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}
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public void ScrollToLineIndex(int lineIndex)
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{
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if(lineIndex < this.ScrollPosition || lineIndex > this.GetLastVisibleLineIndex()) {
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//Line isn't currently visible, scroll it to the middle of the viewport
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this.ScrollPosition = lineIndex - this.GetNumberVisibleLines()/2;
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}
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this.CursorPosition = lineIndex;
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}
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public void ScrollToLineNumber(int lineNumber)
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{
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int lineIndex = this.GetLineIndex(lineNumber);
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if(lineIndex >= 0) {
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ScrollToLineIndex(lineIndex);
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}
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}
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private int GetMargin(Graphics g)
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{
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return this.ShowLineNumbers ? (int)(g.MeasureString("W", this.Font).Width * 6) : 0;
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}
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public string GetWordUnderLocation(Point position)
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{
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using(Graphics g = Graphics.FromHwnd(this.Handle)) {
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int marginLeft = this.GetMargin(g);
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int positionX = position.X - marginLeft;
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int lineOffset = this.GetLineAtPosition(position.Y);
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if(positionX >= 0 && this.ScrollPosition + lineOffset < _contents.Length) {
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string text = _contents[this.ScrollPosition + lineOffset];
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int charIndex = -1;
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int previousWidth = 0;
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for(int i = 0, len = text.Length; i < len; i++) {
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int width = (int)g.MeasureString(text.Substring(0, i+1), this.Font).Width;
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if(width >= positionX && previousWidth <= positionX) {
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charIndex = i;
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break;
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}
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previousWidth = width;
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}
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if(charIndex >= 0) {
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List<char> wordDelimiters = new List<char>(new char[] { ' ', ',' });
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if(wordDelimiters.Contains(text[charIndex])) {
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return string.Empty;
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} else {
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int endIndex = text.IndexOfAny(wordDelimiters.ToArray(), charIndex);
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if(endIndex == -1) {
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endIndex = text.Length;
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}
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int startIndex = text.LastIndexOfAny(wordDelimiters.ToArray(), charIndex);
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return text.Substring(startIndex + 1, endIndex - startIndex - 1);
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}
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}
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}
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}
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return string.Empty;
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}
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private int GetLineAtPosition(int yPos)
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{
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if(!string.IsNullOrWhiteSpace(this._header)) {
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yPos -= this.LineHeight;
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}
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return Math.Max(0, yPos / this.LineHeight);
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}
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private int GetLastVisibleLineIndex()
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{
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return this.ScrollPosition + this.GetNumberVisibleLines() - 1;
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}
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public int GetNumberVisibleLines()
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{
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Rectangle rect = this.ClientRectangle;
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return this.GetLineAtPosition(rect.Height);
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}
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[Browsable(false)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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public int CursorPosition
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{
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get { return Math.Min(this._contents.Length - 1, Math.Max(0, _cursorPosition)); }
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set
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{
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_cursorPosition = Math.Min(this._contents.Length - 1, Math.Max(0, value));
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if(_cursorPosition < this.ScrollPosition) {
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this.ScrollPosition = _cursorPosition;
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} else if(_cursorPosition > this.GetLastVisibleLineIndex()) {
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this.ScrollPosition = _cursorPosition - this.GetNumberVisibleLines() + 1;
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}
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this.Invalidate();
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}
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}
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public int CurrentLine
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{
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get { return _lineNumbers[_cursorPosition]; }
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}
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[Browsable(false)]
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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public int ScrollPosition
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{
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get { return _scrollPosition; }
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set
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{
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value = Math.Max(0, Math.Min(value, this._contents.Length-1));
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_scrollPosition = value;
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if(this.ScrollPositionChanged != null) {
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ScrollPositionChanged(this, null);
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}
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this.Invalidate();
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}
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}
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public bool ShowLineNumbers
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{
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get { return _showLineNumbers; }
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set { _showLineNumbers = value; }
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}
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public bool ShowLineInHex
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{
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get { return _showLineInHex; }
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set { _showLineInHex = value; }
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}
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private int LineHeight
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{
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get { return this.Font.Height - 1; }
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}
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protected override void OnMouseDown(MouseEventArgs e)
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{
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this.Focus();
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base.OnMouseDown(e);
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}
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protected override void OnMouseClick(MouseEventArgs e)
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{
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if(e.Button == System.Windows.Forms.MouseButtons.Left) {
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int clickedLine = this.GetLineAtPosition(e.Y);
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this.CursorPosition = this.ScrollPosition + clickedLine;
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}
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base.OnMouseClick(e);
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}
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private void DrawLine(Graphics g, int currentLine, int marginLeft, int positionY)
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{
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if(this.ShowLineNumbers) {
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//Show line number
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string lineNumber = _lineNumbers[currentLine] >= 0 ? _lineNumbers[currentLine].ToString(_showLineInHex ? "X4" : "") : "..";
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float width = g.MeasureString(lineNumber, this.Font).Width;
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g.DrawString(lineNumber, this.Font, Brushes.Gray, marginLeft - width, positionY);
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}
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if(currentLine == this.CursorPosition) {
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//Highlight current line
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g.FillRectangle(Brushes.AliceBlue, marginLeft, positionY, this.ClientRectangle.Width - marginLeft, this.LineHeight);
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}
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Color textColor = Color.Black;
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if(_lineProperties.ContainsKey(currentLine)) {
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//Process background, foreground, outline color and line symbol
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LineProperties lineProperties = _lineProperties[currentLine];
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textColor = lineProperties.FgColor ?? Color.Black;
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float stringLength = g.MeasureString(_contents[currentLine], this.Font).Width;
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if(lineProperties.BgColor.HasValue) {
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using(Brush bgBrush = new SolidBrush(lineProperties.BgColor.Value)) {
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g.FillRectangle(bgBrush, marginLeft + 1, positionY + 1, stringLength, this.LineHeight-1);
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}
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}
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if(lineProperties.OutlineColor.HasValue) {
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using(Pen outlinePen = new Pen(lineProperties.OutlineColor.Value, 1)) {
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g.DrawRectangle(outlinePen, marginLeft + 1, positionY + 1, stringLength, this.LineHeight-1);
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}
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}
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if(lineProperties.Symbol.HasFlag(LineSymbol.Circle)) {
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using(Brush brush = new SolidBrush(lineProperties.OutlineColor.Value)) {
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g.FillEllipse(brush, 1, positionY + 2, this.LineHeight - 3, this.LineHeight - 3);
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}
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}
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if(lineProperties.Symbol.HasFlag(LineSymbol.CircleOutline) && lineProperties.OutlineColor.HasValue) {
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using(Pen pen = new Pen(lineProperties.OutlineColor.Value, 1)) {
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g.DrawEllipse(pen, 1, positionY + 2, this.LineHeight - 3, this.LineHeight - 3);
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}
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}
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if(lineProperties.Symbol.HasFlag(LineSymbol.Arrow)) {
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int arrowY = positionY + this.LineHeight / 2 + 1;
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using(Pen pen = new Pen(Color.Black, this.LineHeight * 0.33f)) {
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//Outline
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g.DrawLine(pen, 3, arrowY, 3 + this.LineHeight * 0.25f, arrowY);
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pen.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
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g.DrawLine(pen, 3 + this.LineHeight * 0.25f, arrowY, 3 + this.LineHeight * 0.75f, arrowY);
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//Fill
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pen.Width-=2f;
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pen.Color = lineProperties.BgColor.Value;
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pen.EndCap = System.Drawing.Drawing2D.LineCap.Square;
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g.DrawLine(pen, 4, arrowY, 3 + this.LineHeight * 0.25f - 1, arrowY);
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pen.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
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g.DrawLine(pen, 3 + this.LineHeight * 0.25f, arrowY, this.LineHeight * 0.75f + 1, arrowY);
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}
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}
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}
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using(Brush fgBrush = new SolidBrush(textColor)) {
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int searchIndex;
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if(!string.IsNullOrWhiteSpace(this._searchString) && (searchIndex = _contents[currentLine].ToLowerInvariant().IndexOf(this._searchString)) >= 0) {
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//Draw colored search string
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string searchString = _contents[currentLine].Substring(searchIndex, this._searchString.Length);
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StringFormat stringFormat = new StringFormat(StringFormat.GenericTypographic) { FormatFlags = StringFormatFlags.MeasureTrailingSpaces };
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float searchStringWidth = g.MeasureString(searchString, this.Font, Int32.MaxValue, stringFormat).Width;
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g.DrawString(_contents[currentLine].Substring(0, searchIndex), this.Font, fgBrush, marginLeft, positionY);
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float offsetX = g.MeasureString(_contents[currentLine].Substring(0, searchIndex), this.Font, Int32.MaxValue, stringFormat).Width;
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using(Brush selBrush = new SolidBrush(Color.White), selBgBrush = new SolidBrush(Color.CornflowerBlue)) {
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g.FillRectangle(selBgBrush, marginLeft+offsetX+1, positionY, searchStringWidth+2, this.LineHeight);
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g.DrawString(searchString, this.Font, selBrush, marginLeft+offsetX, positionY);
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}
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offsetX += searchStringWidth;
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g.DrawString(_contents[currentLine].Substring(searchIndex+this._searchString.Length), this.Font, fgBrush, marginLeft+offsetX, positionY);
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} else {
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g.DrawString(_contents[currentLine], this.Font, fgBrush, marginLeft, positionY);
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}
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}
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}
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protected override void OnPaint(PaintEventArgs pe)
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{
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pe.Graphics.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
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using(Brush lightGrayBrush = new SolidBrush(Color.FromArgb(240,240,240))) {
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using(Pen grayPen = new Pen(Color.LightGray)) {
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Rectangle rect = this.ClientRectangle;
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pe.Graphics.FillRectangle(Brushes.White, rect);
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int marginLeft = this.GetMargin(pe.Graphics);
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if(this.ShowLineNumbers) {
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pe.Graphics.FillRectangle(lightGrayBrush, 0, 0, marginLeft, rect.Bottom);
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pe.Graphics.DrawLine(grayPen, marginLeft, rect.Top, marginLeft, rect.Bottom);
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}
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int currentLine = this.ScrollPosition;
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int positionY = 0;
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if(!string.IsNullOrWhiteSpace(this._header)) {
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pe.Graphics.FillRectangle(lightGrayBrush, marginLeft, 0, rect.Right, this.LineHeight);
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pe.Graphics.DrawString(_header, this.Font, Brushes.Gray, marginLeft, positionY);
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positionY += this.LineHeight;
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}
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while(positionY < rect.Bottom && currentLine < _contents.Length) {
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this.DrawLine(pe.Graphics, currentLine, marginLeft, positionY);
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positionY += this.LineHeight;
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currentLine++;
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}
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}
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}
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}
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}
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}
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