public SimpleDocument(Size size, Font font, String text)
{
this.size = size;
this.font = font;
this.sections = new List<SimpleSection>();
this.sections.Add(new SimpleSection());
this.insertPos = this.sections.Last().End;
Insert(text);
DrawText();
}
public void Delete(SimpleChar sc)
{
var oldText = Lines.SelectMany(x => x.Line);
List<SimpleChar> newText = oldText.Where(x => x != sc && !x.IsLineEnd).ToList();
var lines = new List<SimpleLine>();
bool isLoose = true;
do {
var line = new SimpleLine(this);
line.Fill(newText, isLoose = !isLoose);
lines.Add(line);
} while (newText.Count > 0);
this.Lines = lines;
}
public void Insert(SimpleChar position, List<SimpleChar> insertChars)
{
var oldText = Lines.SelectMany(x => x.Line).ToList();
int insertPos = oldText.IndexOf(position);
var leftText = oldText.Take(insertPos);
var rightText = oldText.Skip(insertPos);
List<SimpleChar> newText= leftText.Concat(insertChars).Concat(rightText).Where(x => !x.IsLineEnd).ToList();
var lines = new List<SimpleLine>();
bool isLoose = true;
do {
var line = new SimpleLine(this);
line.Fill(newText, isLoose=!isLoose);
lines.Add(line);
} while (newText.Count > 0);
this.Lines = lines;
}
public void DeleteLeft()
{
var currentSec = this.insertPos.Line.Section;
if (this.insertPos == currentSec.Home) { // 段首
int currentSecIndex = sections.IndexOf(currentSec);
if (currentSecIndex > 0) {
var previousSec = sections[currentSecIndex - 1];
previousSec.Merge(currentSec);
sections.Remove(currentSec);
if (!this.insertPos.IsPrintableChar()) { // 空段落
this.insertPos = previousSec.End;
}
}
} else {
var deleteChar = this.insertPos;
do {
deleteChar = PreviousChar(deleteChar);
} while (!deleteChar.IsPrintableChar());
var nextChar = this.insertPos;
if (this.insertPos == currentSec.End) {
nextChar = null;
} else {
while (!nextChar.IsPrintableChar()) {
nextChar = NextChar(nextChar);
}
}
currentSec.Delete(deleteChar);
if (!this.insertPos.IsPrintableChar()) {
if (nextChar != null) {
this.insertPos = nextChar;
} else {
this.insertPos = currentSec.End;
}
}
}
DrawText();
}
private SimpleChar PreviousChar(SimpleChar c)
{
int index = c.Line.Line.IndexOf(c);
if (index > 0) {
return c.Line.Line[index - 1];
} else {
int lineIndex = c.Line.Section.Lines.IndexOf(c.Line);
if (lineIndex > 0) {
return c.Line.Section.Lines[lineIndex - 1].End;
} else {
int secIndex = sections.IndexOf(c.Line.Section);
if (secIndex > 0) {
return sections[secIndex - 1].End;
} else {
return sections[0].Home;
}
}
}
}
private SimpleChar NextChar(SimpleChar c)
{
int index = c.Line.Line.IndexOf(c);
if (index < c.Line.Line.Count - 1) {
return c.Line.Line[index + 1];
} else {
int lineIndex = c.Line.Section.Lines.IndexOf(c.Line);
if (lineIndex < c.Line.Section.Lines.Count - 1) {
return c.Line.Section.Lines[lineIndex + 1].Home;
} else {
int secIndex = sections.IndexOf(c.Line.Section);
if (secIndex < sections.Count - 1) {
return sections[secIndex + 1].Home;
} else {
return sections.Last().End;
}
}
}
}
private SimpleChar HomeChar(SimpleChar c)
{
if (c.Line.Line.Contains(c)) {
return c.Line.Line.First();
} else {
return c;
}
}
private SimpleChar EndChar(SimpleChar c)
{
if (c.Line.Line.Contains(c)) {
return c.Line.End;
} else {
return c;
}
}
public void SetInsertPosByMove(MoveOperation op)
{
switch (op) {
case MoveOperation.Left:
this.insertPos = PreviousChar(this.insertPos);
// 前一个字符是行末，并且不是段末，再往前找一格
if (!this.insertPos.IsPrintableChar() && this.insertPos != this.insertPos.Line.Section.End) {
this.insertPos = PreviousChar(this.insertPos);
}
break;
case MoveOperation.Right:
// 字符是行末，并且不是段末，多往后找一格
if (!this.insertPos.IsPrintableChar() && this.insertPos != this.insertPos.Line.Section.End) {
this.insertPos = NextChar(this.insertPos);
}
this.insertPos = NextChar(this.insertPos);
break;
case MoveOperation.Up:
PointF pUp = new PointF(this.insertPos.X, this.insertPos.Y - this.font.Height - ROW_SPACING);
SetInsertPosByLocation(pUp);
break;
case MoveOperation.Down:
PointF pDown = new PointF(this.insertPos.X, this.insertPos.Y + this.font.Height + ROW_SPACING);
SetInsertPosByLocation(pDown);
break;
case MoveOperation.Home:
this.insertPos = HomeChar(this.insertPos);
break;
case MoveOperation.End:
this.insertPos = EndChar(this.insertPos);
break;
default:
break;
}
}
public void SetInsertPosByLocation(PointF location)
{
this.insertPos = LocateChar(location);
}
public void Insert(String text)
{
text = text.Replace("\r\n", "\n").Replace("\r", "\n");
var secs = ConvertChars(text);
var currentSec = this.insertPos.Line.Section;
int currentSecIndex = sections.IndexOf(currentSec);
if (secs.Count > 1) {
var newSec = currentSec.Split(this.insertPos);
this.sections.Insert(currentSecIndex + 1, newSec);
}
currentSec.Insert(this.insertPos, secs[0]);
var lastInsertChar = secs[0].Count > 0 ? secs[0].Last() : currentSec.End;
for (int i = 1; i < secs.Count-1; i++) {
SimpleSection sec = new SimpleSection();
sec.Insert(sec.End, secs[i]);
this.sections.Insert(currentSecIndex + i, sec);
lastInsertChar = sec.End;
}
if (secs.Count > 1) {
var nextSec = sections[currentSecIndex + secs.Count - 1];
nextSec.Insert(nextSec.Home, secs[secs.Count - 1]);
if (secs[secs.Count - 1].Count > 0) {
lastInsertChar = secs[secs.Count - 1].Last();
} else {
lastInsertChar = null;
this.insertPos = nextSec.Home;
}
}
if (lastInsertChar != null) {
this.insertPos = NextChar(lastInsertChar);
}
DrawText();
}
public void DeleteRight()
{
var currentSec = this.insertPos.Line.Section;
if (this.insertPos == currentSec.End) { // 段末
int currentSecIndex = sections.IndexOf(currentSec);
if (currentSecIndex < sections.Count - 1) {
var nextSec = sections[currentSecIndex + 1];
this.insertPos = nextSec.Home;
currentSec.Merge(nextSec);
sections.Remove(nextSec);
if (!this.insertPos.IsPrintableChar()) { // 空段落
this.insertPos = currentSec.End;
}
}
} else {
var deleteChar = this.insertPos;
while (!deleteChar.IsPrintableChar()) {
deleteChar = NextChar(deleteChar);
}
var nextChar = NextChar(deleteChar);
currentSec.Delete(deleteChar);
this.insertPos = nextChar;
}
DrawText();
}
public SimpleSection Split(SimpleChar position)
{
var oldText = Lines.SelectMany(x => x.Line).ToList();
int splitPos = oldText.IndexOf(position);
var leftText = oldText.Take(splitPos).Where(x => !x.IsLineEnd).ToList();
var rightText = oldText.Skip(splitPos).Where(x => !x.IsLineEnd).ToList();
var lines = new List<SimpleLine>();
bool isLoose = true;
do {
var line = new SimpleLine(this);
line.Fill(leftText, isLoose = !isLoose);
lines.Add(line);
} while (leftText.Count > 0);
this.Lines = lines;
var splitOne = new SimpleSection();
splitOne.Insert(splitOne.End, rightText);
return splitOne;
}
