/// <summary>
/// 处理鼠标移动事件，包括拖动与选择的处理
/// </summary>
/// <param name="sender">事件发送者</param>
/// <param name="e">事件参数</param>
private void TextCtrl_MouseMove(object sender, MouseEventArgs e)
{
if (isDragging)
{
Point mouseAbsPos = e.Location + viewAbsolutePos;
if (selections.Find((Rectangle rect) => rect.Contains(mouseAbsPos)) == NULL)
{
if (ctrlState)
{
Cursor = Cursors.Hand;
}
else
{
Cursor = Cursors.Arrow;
}
if (showLineNum)
{
if (e.X > lineNumWidth)
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(e.X - lineNumWidth, e.Y));
}
else
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(0, e.Y));
}
}
else
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(e.X, e.Y));
}
ValidateCaretPos();
UpdateCaretPos();
}
else
{
Cursor = Cursors.No;
}
}
else if (mouseDown)
{
if (showLineNum)
{
if (e.X > lineNumWidth)
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(e.X - lineNumWidth, e.Y));
}
else
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(0, e.Y));
}
}
else
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(e.X, e.Y));
}
ValidateCaretPos();
selectionEndPos = cursorRelativePos + viewAbsolutePos;
UpdateSelection();
}
}
private void btnSearch_Click(object sender, EventArgs e)
{
CPosition result = new CPosition(), result2 = result, tmp;
if (txtPattern.Text.Length > 0)
{
tmp = txt.CursorAbsolutePosition;
//int[] sizes = txt.GetLineLengths();
//while (sizes[tmp.y] == tmp.x)
//{
// if (tmp.y == sizes.Length - 1)
// {
// tmp.x = tmp.y = 0;
// break;
// }
// tmp.y++;
//}
MatchPattern(txtPattern.Text, ref tmp, ref result, ref result2);
if (result.x < 0)
{
MessageBox.Show("找不到匹配的字符串！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else
{
txt.ScrollToAndSelect(result, result2);
}
}
}
/// <summary>
/// 滚动到指定位置并选择文段
/// </summary>
/// <param name="start">选区起点</param>
/// <param name="end">选区终点</param>
public void ScrollToAndSelect(CPosition start, CPosition end)
{
ScrollTo(end);
selectionStartPos = start;
selectionEndPos = end;
UpdateSelection();
}
private void UpdateCaretPos()
{
CPosition tmp = GetExactCoordOfPos(cursorRelativePos);
myCaret.Top = tmp.y;
myCaret.Left = tmp.x;
}
private void btnReplace_Click(object sender, EventArgs e)
{
CPosition result = new CPosition(), result2 = result, tmp;
if (txtPattern.Text.Length > 0)
{
tmp = txt.CursorAbsolutePosition;
int[] sizes = txt.GetLineLengths();
while (sizes[tmp.y] == tmp.x)
{
if (tmp.y == sizes.Length - 1)
{
tmp.x = tmp.y = 0;
break;
}
tmp.y++;
}
MatchPattern(txtPattern.Text, ref tmp, ref result, ref result2);
if (result.x < 0)
{
MessageBox.Show("找不到匹配的字符串！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else
{
CoreMethods.Replace(txtReplace.Text, ref result, ref result2, ref tmp);
txt.UpdateText();
txt.ScrollTo(tmp);
}
}
}
/// <summary>
/// 滚动到指定位置
/// </summary>
/// <param name="pos">滚动到的位置</param>
public void ScrollTo(CPosition pos)
{
CPosition rel = pos - viewAbsolutePos;
if (rel.x >= 0 && rel.y >= 0 && rel.x <= txtFieldSize.Width && rel.y < txtFieldSize.Height)
{
cursorRelativePos = rel;
UpdateCaretPos();
return;
}
cursorRelativePos.x = pos.x;
cursorRelativePos.y = pos.y;
viewAbsolutePos.x = 0;
viewAbsolutePos.y = 0;
ValidateCaretPos();
if (viewAbsolutePos.x + txtFieldSize.Width > lineMaxLen)
{
viewAbsolutePos.x = lineMaxLen - txtFieldSize.Width;
if (viewAbsolutePos.x < 0)
{
viewAbsolutePos.x = 0;
}
Invalidate();
}
UpdateCaretPos();
if (LineChange != null)
{
LineChange(this);
}
}
private void mnuBracketMatch_Click(object sender, EventArgs e)
{
CPosition inPos = txtMain.CursorAbsolutePosition, outPos = new CPosition();
CoreMethods.MatchBracket(ref inPos, ref outPos);
if (outPos.x > 0)
{
txtMain.ScrollToAndSelect(outPos, outPos + new CPosition(1, 0));
}
}
/// <summary>
/// 处理鼠标释放事件，包括拖放结束处理和选中的处理
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TextCtrl_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
return;
}
if (selectionStartPos > selectionEndPos)
{
CPosition tmp = selectionEndPos;
selectionEndPos = selectionStartPos;
selectionStartPos = tmp;
}
if (isDragging)
{
Point mouseAbsPos = e.Location + viewAbsolutePos;
if (selections.Find((Rectangle rect) => rect.Contains(mouseAbsPos)) == NULL)
{
if (showLineNum)
{
if (e.X > lineNumWidth)
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(e.X - lineNumWidth, e.Y));
}
else
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(0, e.Y));
}
}
else
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(e.X, e.Y));
}
ValidateCaretPos();
CPosition pos = cursorRelativePos + viewAbsolutePos;
if (!CoreMethods.Drag(ref selectionStartPos, ref selectionEndPos, ref pos, !ctrlState))
{
if (DebugMsgSend != null)
{
DebugMsgSend("::Drag failed!");
}
}
UpdateText();
ScrollTo(pos);
isSelecting = false;
}
isDragging = false;
Cursor = Cursors.IBeam;
}
mouseDown = false;
if (!isSelecting)
{
ClearSelection();
Invalidate();
}
}
/// <summary>
/// 处理鼠标按下事件，包括拖动与选择的处理
/// </summary>
/// <param name="sender">事件发送者</param>
/// <param name="e">事件参数</param>
private void TextCtrl_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
return;
}
if (isSelecting)
{
CPosition mousePos;
if (showLineNum)
{
if (e.X > lineNumWidth)
{
mousePos = new CPosition(e.X - lineNumWidth, e.Y);
}
else
{
mousePos = new CPosition(0, e.Y);
}
}
else
{
mousePos = new CPosition(e.X, e.Y);
}
if (selections.Find((Rectangle rect) => rect.Contains(mousePos)) != NULL)
{
isDragging = true;
return;
}
else
{
isDragging = false;
}
}
mouseDown = true;
isSelecting = false;
if (showLineNum)
{
if (e.X > lineNumWidth)
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(e.X - lineNumWidth, e.Y));
}
else
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(0, e.Y));
}
}
else
{
cursorRelativePos = GetCharPosOfCoord(new CPosition(e.X, e.Y));
}
ValidateCaretPos();
selectionStartPos = cursorRelativePos + viewAbsolutePos;
UpdateCaretPos();
}
/// <summary>
/// 调用核心模块开始匹配算法
/// </summary>
/// <param name="pattern">匹配模版</param>
/// <param name="pos">起始位置</param>
/// <param name="resultB">找到字串的起始点</param>
/// <param name="resultE">找到字串的终止点</param>
private void MatchPattern(string pattern, ref CPosition pos, ref CPosition resultB, ref CPosition resultE)
{
if (radbtnBM.Checked)
{
CoreMethods.Search(pattern, ref pos, ref resultB, ref resultE);
}
else
{
CoreMethods.KMPSearch(pattern, ref pos, ref resultB, ref resultE);
}
}
public TextCtrl()
{
selectionColor = Color.LightCoral;
isDragging = false;
lastKeyHandled = false;
ctrlState = false;
mouseDown = false;
isSelecting = false;
charWidthUpdated = false;
showLineNum = false;
charWidth = 8;
charHeight = 15;
lineNumWidth = 50;
texts = new char[][] { new char[] {} };
sizes = new int[] { 0 };
lineNums = new int[] { 0 };
pointers = new IntPtr[] { Marshal.UnsafeAddrOfPinnedArrayElement(texts[0], 0) };
styles = new List <List <CharStyle> >();
selections = new List <Rectangle>();
//int i;
//if (File.Exists("test.txt"))
// using (StreamReader sr = new StreamReader(new FileStream("test.txt", FileMode.Open)))
// while (!sr.EndOfStream)
// {
// string tmp = sr.ReadLine();
// texts.Add(tmp);
// styles.Add(new List<CharStyle>());
// List<CharStyle> lst = styles[styles.Count - 1];
// for (i = 0; i < tmp.Length; i++)
// lst.Add(new CharStyle(Color.Black, Color.White));
// if (tmp.Length > lineMaxLen)
// lineMaxLen = tmp.Length;
// }
cursorRelativePos = new CPosition();
viewAbsolutePos = new CPosition();
currFormat = new StringFormat(StringFormatFlags.NoClip | StringFormatFlags.FitBlackBox);
SetStyle(ControlStyles.Selectable, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
InitializeComponent();
myCaret.Visible = false;
UpdateCaretPos();
}
/// <summary>
/// 处理输入键按下的事件，即输入字符的事件
/// </summary>
/// <param name="sender">事件发送者</param>
/// <param name="e">事件参数</param>
private void TextCtrl_KeyPress(object sender, KeyPressEventArgs e)
{
if (lastKeyHandled)
{
return;
}
if (isSelecting)
{
if (!CoreMethods.Remove(ref selectionStartPos, ref selectionEndPos))
{
if (DebugMsgSend != null)
{
DebugMsgSend("::Remove failed!");
}
}
ScrollTo(selectionStartPos);
ClearSelection();
}
CPosition tmp = cursorRelativePos + viewAbsolutePos;
if (e.KeyChar == 13)
{
e.KeyChar = (char)10;
}
if (!CoreMethods.InsertC(ref tmp, e.KeyChar))
{
if (DebugMsgSend != null)
{
DebugMsgSend("::InsertChar failed!");
}
}
UpdateText();
UpdateScrollBars();
if (e.KeyChar == '\t')
{
cursorRelativePos.x += 4;
UpdateCaretPos();
}
else
{
CaretStep(true);
}
}
public TextCtrl()
{
texts = new List <string>(new string[] {
"Hi! I'm a pig", "I goes ghrr..", "MWAHAHA~", "haha", "hah", "ha", "h", "...", "hey! Can't you say something?",
"Oh well...", "well..", "well.", "HELL",
"Hi! I'm a pig", "I goes ghrr..", "MWAHAHA~", "haha", "hah", "ha", "h", "...", "hey! Can't you say something?",
});
lineMaxLen = 30;
cursorRelativePos = new CPosition();
viewAbsolutePos = new CPosition();
currFont = SystemFonts.DefaultFont;
SetStyle(ControlStyles.Selectable, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
InitializeComponent();
myCaret.Visible = false;
UpdateCaretPos();
}
/// <summary>
/// 在选择区域组中添加一个矩形选区。
/// </summary>
/// <param name="start">选区开始处的相对坐标</param>
/// <param name="end">选区结束处的相对坐标</param>
/// <returns>矩形中的字串长度</returns>
private int AddRectangle(CPosition start, CPosition end)
{
if (start == end)
{
return(0);
}
int result = end.x - start.x;
start = GetExactCoordOfPos(start);
end.y++;
end = GetExactCoordOfPos(end);
if (showLineNum)
{
selections.Add(new Rectangle(start + new CPosition(lineNumWidth, 0), end - start));
}
else
{
selections.Add(new Rectangle(start, end - start));
}
return(result);
}
/// <summary>
/// 粘贴选区
/// </summary>
public void Paste()
{
if (isSelecting)
{
if (!CoreMethods.Remove(ref selectionStartPos, ref selectionEndPos))
{
if (DebugMsgSend != null)
{
DebugMsgSend("::Remove failed!");
}
}
}
if (!Clipboard.ContainsText())
{
SystemSounds.Beep.Play();
return;
}
CPosition tmp = cursorRelativePos + viewAbsolutePos, endPos = new CPosition();
CoreMethods.InsertS(ref tmp, Clipboard.GetText(), ref endPos);
UpdateText();
ScrollTo(endPos);
}
internal static extern bool Remove(ref CPosition start, ref CPosition end);
internal static extern bool Backspace(ref CPosition pos);
internal static extern bool InsertC(ref CPosition pos, char chr);
internal static extern bool Drag(ref CPosition start, ref CPosition end, ref CPosition target, bool isMove);
internal static extern void InsertS(ref CPosition pos, string str, ref CPosition endPos);
/// <summary>
/// 从实际坐标转为字符坐标
/// </summary>
/// <param name="relativeCoord">实际坐标</param>
/// <returns>字符坐标</returns>
internal CPosition GetCharPosOfCoord(CPosition relativeCoord)
{
return(new CPosition((int)((relativeCoord.x - 1.0) / charWidth + 0.5), relativeCoord.y / charHeight));
}
internal CPosition GetExactCoordOfPos(CPosition relativePos)
{
return(new CPosition(relativePos.x * 9, relativePos.y * 15));
}
internal static extern void Replace(string target, ref CPosition start, ref CPosition end, ref CPosition endPos);
internal static extern void MatchBracket(ref CPosition inpos, ref CPosition outpos);
internal static extern void KMPSearch(string pattern, ref CPosition pos, ref CPosition resultS, ref CPosition resultE);
/// <summary>
/// 处理控制键按下的事件，包括功能键、删除键、编辑键的功能实现
/// </summary>
/// <param name="sender">事件触发者</param>
/// <param name="e">事件参数</param>
private void TextCtrl_KeyDown(object sender, KeyEventArgs e)
{
lastKeyHandled = true;
if (e.KeyCode == Keys.Up)
{
cursorRelativePos.y--;
if (!ValidateCaretPos())
{
SystemSounds.Beep.Play();
}
UpdateCaretPos();
ArrowKeyEndProc();
}
else if (e.KeyCode == Keys.Down)
{
cursorRelativePos.y++;
if (!ValidateCaretPos())
{
SystemSounds.Beep.Play();
}
UpdateCaretPos();
ArrowKeyEndProc();
}
else if (e.KeyCode == Keys.Left)
{
CaretStep(false);
}
else if (e.KeyCode == Keys.Right)
{
CaretStep(true);
}
else if (e.KeyCode == Keys.Home)
{
cursorRelativePos.x = viewAbsolutePos.x = 0;
ValidateCaretPos();
UpdateCaretPos();
Invalidate();
}
else if (e.KeyCode == Keys.End)
{
viewAbsolutePos.x = 0;
cursorRelativePos.x = lineMaxLen;
ValidateCaretPos();
UpdateCaretPos();
Invalidate();
}
else if (e.KeyCode == Keys.PageUp)
{
cursorRelativePos.y -= txtFieldSize.Height;
ValidateCaretPos();
UpdateCaretPos();
Invalidate();
}
else if (e.KeyCode == Keys.PageDown)
{
cursorRelativePos.y += txtFieldSize.Height;
ValidateCaretPos();
UpdateCaretPos();
Invalidate();
}
else if (e.KeyCode == Keys.C && e.Control)
{
CopySelection();
}
else if (e.KeyCode == Keys.V && e.Control)
{
Paste();
}
else if (e.KeyCode == Keys.F && e.Control)
{
RequestFind(this);
}
else if (e.KeyCode == Keys.S && e.Control)
{
SaveFile();
}
else if (e.KeyCode == Keys.A && e.Control)
{
selectionStartPos.x = selectionStartPos.y = 0;
selectionEndPos.y = texts.Length - 1;
selectionEndPos.x = sizes[texts.Length - 1];
isSelecting = true;
UpdateSelection();
}
else if (e.KeyCode == Keys.D && e.Control)
{
CoreMethods.RemoveLine(cursorRelativePos.y + viewAbsolutePos.y);
UpdateText();
ValidateCaretPos();
UpdateCaretPos();
}
else if (e.KeyCode == Keys.Back || e.KeyCode == Keys.Delete)
{
if (isSelecting)
{
if (!CoreMethods.Remove(ref selectionStartPos, ref selectionEndPos))
{
if (DebugMsgSend != null)
{
DebugMsgSend("::Remove failed!");
}
}
ScrollTo(selectionStartPos);
ClearSelection();
UpdateText();
}
else
{
if (e.KeyCode == Keys.Delete && !CaretStep(true, true))
{
return;
}
CPosition tmp = cursorRelativePos + viewAbsolutePos;
if (!CoreMethods.Backspace(ref tmp))
{
if (DebugMsgSend != null)
{
DebugMsgSend("::Backspace failed!");
}
}
CaretStep(false, true);
tmp = cursorRelativePos + viewAbsolutePos;
UpdateText();
UpdateScrollBars();
cursorRelativePos = tmp - viewAbsolutePos;
ValidateCaretPos();
UpdateCaretPos();
}
}
else
{
lastKeyHandled = false;
}
ctrlState = e.Control;
}
internal static extern void GetSelection(ref CPosition start, ref CPosition end,
[MarshalAs(UnmanagedType.LPStr)] StringBuilder result); // 转换托管类型为非托管
/// <summary>
/// 从字符位置转为实际坐标
/// </summary>
/// <param name="relativePos">相对字符坐标</param>
/// <returns>实际坐标</returns>
internal CPosition GetExactCoordOfPos(CPosition relativePos)
{
return(new CPosition((int)(relativePos.x * charWidth + 1), relativePos.y * charHeight));
}
