static IEnumerable <CssLineBox> GetLineWalkDownIter(LineWalkVisitor visitor, CssBox box)
{
//recursive
float y = visitor._globalY;
if (box.LineBoxCount > 0)
{
foreach (CssLineBox linebox in box.GetLineBoxIter())
{
visitor._globalY = y + linebox.CachedLineTop;
yield return(linebox);
}
}
else
{
//element based
foreach (CssBox childbox in box.GetChildBoxIter())
{
visitor._globalY = y + childbox.LocalY;
//recursive
foreach (var linebox in GetLineWalkDownIter(visitor, childbox))
{
yield return(linebox);
}
}
}
visitor._globalY = y;
}
/// walk down and up
/// </summary>
/// <param name="startLine"></param>
/// <returns></returns>
static IEnumerable <CssLineBox> GetLineWalkDownAndUpIter(LineWalkVisitor visitor, CssLineBox startLine)
{
float sx, sy;
startLine.OwnerBox.GetGlobalLocation(out sx, out sy);
CssLineBox curLine = startLine;
//walk up and down the tree
CssLineBox nextline = curLine.NextLine;
while (nextline != null)
{
visitor.globalY = sy + startLine.CachedLineTop;
yield return(nextline);
nextline = nextline.NextLine;
}
//--------------------
//no next line
//then walk up ***
CssBox curBox = startLine.OwnerBox;
RETRY:
CssBox level1Sibling = BoxHitUtils.GetNextSibling(curBox);
while (level1Sibling != null)
{
level1Sibling.GetGlobalLocation(out sx, out sy);
visitor.globalY = sy;
//walk down
foreach (var line in GetLineWalkDownIter(visitor, level1Sibling))
{
yield return(line);
}
level1Sibling = BoxHitUtils.GetNextSibling(level1Sibling);
}
//--------------------
//other further sibling
//then step to parent of lineOwner
if (curBox.ParentBox != null)
{
//if has parent
//walk up***
curBox = curBox.ParentBox;
goto RETRY;
}
}
///// walk down and up
///// </summary>
///// <param name="startLine"></param>
///// <returns></returns>
//static IEnumerable<CssLineBox> GetLineWalkDownAndUpIter(LineWalkVisitor visitor, CssLineBox startLine)
//{
// float sx, sy;
// startLine.OwnerBox.GetGlobalLocation(out sx, out sy);
// CssLineBox curLine = startLine;
// //walk up and down the tree
// CssLineBox nextline = curLine.NextLine;
// while (nextline != null)
// {
// visitor._globalY = sy + startLine.CachedLineTop;
// yield return nextline;
// nextline = nextline.NextLine;
// }
// //--------------------
// //no next line
// //then walk up ***
// CssBox curBox = startLine.OwnerBox;
// RETRY://***
// CssBox level1Sibling = BoxHitUtils.GetNextSibling(curBox);
// while (level1Sibling != null)
// {
// level1Sibling.GetGlobalLocation(out sx, out sy);
// visitor._globalY = sy;
// //walk down
// foreach (CssLineBox line in GetLineWalkDownIter(visitor, level1Sibling))
// {
// yield return line;
// }
// level1Sibling = BoxHitUtils.GetNextSibling(level1Sibling);
// }
// //--------------------
// //other further sibling
// //then step to parent of lineOwner
// if (curBox.ParentBox != null)
// {
// //if has parent
// //walk up***
// curBox = curBox.ParentBox;
// goto RETRY;
// }
//}
/// walk down and up
/// </summary>
/// <param name="startLine"></param>
/// <returns></returns>
static IEnumerable <CssLineBox> GetLineWalkDownAndUpIter(LineWalkVisitor visitor, CssLineBox startLine)
{
PointF p = new PointF();
startLine.OwnerBox.GetGlobalLocationRelativeToRoot(ref p);
CssLineBox curLine = startLine;
//walk up and down the tree
CssLineBox nextline = curLine.NextLine;
while (nextline != null)
{
visitor._globalY = p.Y + startLine.CachedLineTop;
yield return(nextline);
nextline = nextline.NextLine;
}
//--------------------
//no next line
//then walk up ***
CssBox curBox = startLine.OwnerBox;
RETRY: //***
CssBox level1Sibling = BoxHitUtils.GetNextSibling(curBox);
while (level1Sibling != null)
{
p = new PointF();
level1Sibling.GetGlobalLocationRelativeToRoot(ref p);
visitor._globalY = p.Y;
//walk down
foreach (CssLineBox line in GetLineWalkDownIter(visitor, level1Sibling))
{
yield return(line);
}
level1Sibling = BoxHitUtils.GetNextSibling(level1Sibling);
}
//--------------------
//other further sibling
//then step to parent of lineOwner
if (curBox.ParentBox != null)
{
//if has parent
//walk up***
curBox = curBox.ParentBox;
goto RETRY;
}
}
void SetupEndHitPoint(CssBoxHitChain startChain, CssBoxHitChain endChain, ITextService textService)
{
//find global location of end point
HitInfo endHit = endChain.GetLastHit();
int xposOnEndLine = 0;
CssLineBox endline = null;
//find endline first
_endHitRunCharIndex = 0;
_endHitRun = null;
switch (endHit.hitObjectKind)
{
default:
{
throw new NotSupportedException();
}
case HitObjectKind.Run:
{
CssRun endRun = (CssRun)endHit.hitObject;
#if DEBUG
//if (endRun.Text != null && endRun.Text.Contains("Jose"))
//{
//}
if (endHit.localX > 23)
{
}
System.Diagnostics.Debug.WriteLine(endHit.localX);
#endif
endRun.FindSelectionPoint(textService,
endHit.localX,
out int run_sel_index,
out int run_sel_offset);
endline = endRun.HostLine;
xposOnEndLine = (int)(endRun.Left + run_sel_offset);
_endHitRunCharIndex = run_sel_index;
#if DEBUG
System.Diagnostics.Debug.WriteLine(_endHitRunCharIndex);
#endif
_endHitRun = endRun;
}
break;
case HitObjectKind.LineBox:
{
endline = (CssLineBox)endHit.hitObject;
xposOnEndLine = endHit.localX;
}
break;
case HitObjectKind.CssBox:
{
CssBox hitBox = (CssBox)endHit.hitObject;
endline = FindNearestLine(hitBox, endChain.RootGlobalY, 5);
xposOnEndLine = endHit.localX;
}
break;
}
#if DEBUG
if (xposOnEndLine == 0)
{
}
#endif
//----------------------------------
_selectedLines = new List <CssLineBox>();
if (_startHitHostLine == endline)
{
_selectedLines.Add(endline);
_startHitHostLine.Select(_startLineBeginSelectionAtPixel, xposOnEndLine,
_startHitRun, _startHitRunCharIndex,
_endHitRun, _endHitRunCharIndex);
return; //early exit here ***
}
//----------------------------------
//select on different line
LineWalkVisitor lineWalkVisitor = null;
if (FindCommonGround(startChain, endChain, out int breakAtLevel) && breakAtLevel > 0)
{
CssBlockRun hitBlockRun = endChain.GetHitInfo(breakAtLevel).hitObject as CssBlockRun;
//multiple select
//1. first part
if (hitBlockRun != null)
{
_startHitHostLine.Select(_startLineBeginSelectionAtPixel, (int)hitBlockRun.Left,
_startHitRun, _startHitRunCharIndex,
_endHitRun, _endHitRunCharIndex);
_selectedLines.Add(_startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(hitBlockRun);
}
else
{
_startHitHostLine.SelectPartialToEnd(_startLineBeginSelectionAtPixel, _startHitRun, _startHitRunCharIndex);
_selectedLines.Add(_startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(_startHitHostLine);
}
}
else
{
_startHitHostLine.SelectPartialToEnd(_startLineBeginSelectionAtPixel, _startHitRun, _startHitRunCharIndex);
_selectedLines.Add(_startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(_startHitHostLine);
}
lineWalkVisitor.SetWalkTargetPosition(endChain.RootGlobalX, endChain.RootGlobalY);
#if DEBUG
int dbugExpectedId = 1;
#endif
lineWalkVisitor.Walk(endline, (lineCoverage, linebox, partialLineRun) =>
{
#if DEBUG
//System.Diagnostics.Debug.WriteLine("sel:" + linebox.dbugId);
if (dbugExpectedId != linebox.dbugId)
{
}
dbugExpectedId++;
#endif
switch (lineCoverage)
{
case LineCoverage.EndLine:
{
//found end line
linebox.SelectPartialFromStart(xposOnEndLine, _endHitRun, _endHitRunCharIndex);
_selectedLines.Add(linebox);
}
break;
case LineCoverage.PartialLine:
{
linebox.SelectPartialFromStart((int)partialLineRun.Right, _endHitRun, _endHitRunCharIndex);
_selectedLines.Add(linebox);
}
break;
case LineCoverage.FullLine:
{
//check if hitpoint is in the line area
linebox.SelectFull();
_selectedLines.Add(linebox);
}
break;
}
});
}
void SetupEndHitPoint(CssBoxHitChain startChain, CssBoxHitChain endChain, ITextService ifonts)
{
//find global location of end point
HitInfo endHit = endChain.GetLastHit();
int xposOnEndLine = 0;
CssLineBox endline = null;
int run_sel_offset = 0;
//find endline first
this.endHitRunCharIndex = 0;
this.endHitRun = null;
switch (endHit.hitObjectKind)
{
default:
{
throw new NotSupportedException();
}
case HitObjectKind.Run:
{
CssRun endRun = (CssRun)endHit.hitObject;
//if (endRun.Text != null && endRun.Text.Contains("Jose"))
//{
//}
int run_sel_index;
endRun.FindSelectionPoint(ifonts,
endHit.localX,
out run_sel_index,
out run_sel_offset);
endline = endRun.HostLine;
xposOnEndLine = (int)(endRun.Left + run_sel_offset);
this.endHitRunCharIndex = run_sel_index;
this.endHitRun = endRun;
}
break;
case HitObjectKind.LineBox:
{
endline = (CssLineBox)endHit.hitObject;
xposOnEndLine = endHit.localX;
}
break;
case HitObjectKind.CssBox:
{
CssBox hitBox = (CssBox)endHit.hitObject;
endline = FindNearestLine(hitBox, endChain.RootGlobalY, 5);
xposOnEndLine = endHit.localX;
}
break;
}
#if DEBUG
if (xposOnEndLine == 0)
{
}
#endif
//----------------------------------
this.selectedLines = new List <CssLineBox>();
if (startHitHostLine == endline)
{
this.selectedLines.Add(endline);
startHitHostLine.Select(startLineBeginSelectionAtPixel, xposOnEndLine,
this.startHitRun, this.startHitRunCharIndex,
this.endHitRun, this.endHitRunCharIndex);
return; //early exit here ***
}
//----------------------------------
//select on different line
LineWalkVisitor lineWalkVisitor = null;
int breakAtLevel;
if (FindCommonGround(startChain, endChain, out breakAtLevel) && breakAtLevel > 0)
{
var hit1 = endChain.GetHitInfo(breakAtLevel).hitObject;
var hitBlockRun = hit1 as CssBlockRun;
//multiple select
//1. first part
if (hitBlockRun != null)
{
startHitHostLine.Select(startLineBeginSelectionAtPixel, (int)hitBlockRun.Left,
this.startHitRun, this.startHitRunCharIndex,
this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(hitBlockRun);
}
else
{
startHitHostLine.SelectPartialToEnd(startLineBeginSelectionAtPixel, this.startHitRun, this.startHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(startHitHostLine);
}
}
else
{
startHitHostLine.SelectPartialToEnd(startLineBeginSelectionAtPixel, this.startHitRun, this.startHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(startHitHostLine);
}
lineWalkVisitor.SetWalkTargetPosition(endChain.RootGlobalX, endChain.RootGlobalY);
lineWalkVisitor.Walk(endline, (lineCoverage, linebox, partialLineRun) =>
{
switch (lineCoverage)
{
case LineCoverage.EndLine:
{
//found end line
linebox.SelectPartialFromStart(xposOnEndLine, this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(linebox);
}
break;
case LineCoverage.PartialLine:
{
linebox.SelectPartialFromStart((int)partialLineRun.Right, this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(linebox);
}
break;
case LineCoverage.FullLine:
{
//check if hitpoint is in the line area
linebox.SelectFull();
selectedLines.Add(linebox);
}
break;
}
});
}
static IEnumerable<CssLineBox> GetLineWalkDownIter(LineWalkVisitor visitor, CssBox box)
{
//recursive
float y = visitor.globalY;
if (box.LineBoxCount > 0)
{
foreach (var linebox in box.GetLineBoxIter())
{
visitor.globalY = y + linebox.CachedLineTop;
yield return linebox;
}
}
else
{
//element based
foreach (var childbox in box.GetChildBoxIter())
{
visitor.globalY = y + childbox.LocalY;
//recursive
foreach (var linebox in GetLineWalkDownIter(visitor, childbox))
{
yield return linebox;
}
}
}
visitor.globalY = y;
}
/// walk down and up
/// </summary>
/// <param name="startLine"></param>
/// <returns></returns>
static IEnumerable<CssLineBox> GetLineWalkDownAndUpIter(LineWalkVisitor visitor, CssLineBox startLine)
{
float sx, sy;
startLine.OwnerBox.GetGlobalLocation(out sx, out sy);
CssLineBox curLine = startLine;
//walk up and down the tree
CssLineBox nextline = curLine.NextLine;
while (nextline != null)
{
visitor.globalY = sy + startLine.CachedLineTop;
yield return nextline;
nextline = nextline.NextLine;
}
//--------------------
//no next line
//then walk up ***
CssBox curBox = startLine.OwnerBox;
RETRY:
CssBox level1Sibling = BoxHitUtils.GetNextSibling(curBox);
while (level1Sibling != null)
{
level1Sibling.GetGlobalLocation(out sx, out sy);
visitor.globalY = sy;
//walk down
foreach (var line in GetLineWalkDownIter(visitor, level1Sibling))
{
yield return line;
}
level1Sibling = BoxHitUtils.GetNextSibling(level1Sibling);
}
//--------------------
//other further sibling
//then step to parent of lineOwner
if (curBox.ParentBox != null)
{
//if has parent
//walk up***
curBox = curBox.ParentBox;
goto RETRY;
}
}
void SetupEndHitPoint(CssBoxHitChain startChain, CssBoxHitChain endChain, IFonts ifonts)
{
//find global location of end point
HitInfo endHit = endChain.GetLastHit();
int xposOnEndLine = 0;
CssLineBox endline = null;
int run_sel_offset = 0;
//find endline first
this.endHitRunCharIndex = 0;
this.endHitRun = null;
switch (endHit.hitObjectKind)
{
default:
{
throw new NotSupportedException();
}
case HitObjectKind.Run:
{
CssRun endRun = (CssRun)endHit.hitObject;
//if (endRun.Text != null && endRun.Text.Contains("Jose"))
//{
//}
int run_sel_index;
endRun.FindSelectionPoint(ifonts,
endHit.localX,
out run_sel_index,
out run_sel_offset);
endline = endRun.HostLine;
xposOnEndLine = (int)(endRun.Left + run_sel_offset);
this.endHitRunCharIndex = run_sel_index;
this.endHitRun = endRun;
}
break;
case HitObjectKind.LineBox:
{
endline = (CssLineBox)endHit.hitObject;
xposOnEndLine = endHit.localX;
}
break;
case HitObjectKind.CssBox:
{
CssBox hitBox = (CssBox)endHit.hitObject;
endline = FindNearestLine(hitBox, endChain.RootGlobalY, 5);
xposOnEndLine = endHit.localX;
}
break;
}
#if DEBUG
if (xposOnEndLine == 0)
{
}
#endif
//----------------------------------
this.selectedLines = new List<CssLineBox>();
if (startHitHostLine == endline)
{
this.selectedLines.Add(endline);
startHitHostLine.Select(startLineBeginSelectionAtPixel, xposOnEndLine,
this.startHitRun, this.startHitRunCharIndex,
this.endHitRun, this.endHitRunCharIndex);
return; //early exit here ***
}
//----------------------------------
//select on different line
LineWalkVisitor lineWalkVisitor = null;
int breakAtLevel;
if (FindCommonGround(startChain, endChain, out breakAtLevel) && breakAtLevel > 0)
{
var hit1 = endChain.GetHitInfo(breakAtLevel).hitObject;
var hitBlockRun = hit1 as CssBlockRun;
//multiple select
//1. first part
if (hitBlockRun != null)
{
startHitHostLine.Select(startLineBeginSelectionAtPixel, (int)hitBlockRun.Left,
this.startHitRun, this.startHitRunCharIndex,
this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(hitBlockRun);
}
else
{
startHitHostLine.SelectPartialToEnd(startLineBeginSelectionAtPixel, this.startHitRun, this.startHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(startHitHostLine);
}
}
else
{
startHitHostLine.SelectPartialToEnd(startLineBeginSelectionAtPixel, this.startHitRun, this.startHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(startHitHostLine);
}
lineWalkVisitor.SetWalkTargetPosition(endChain.RootGlobalX, endChain.RootGlobalY);
lineWalkVisitor.Walk(endline, (lineCoverage, linebox, partialLineRun) =>
{
switch (lineCoverage)
{
case LineCoverage.EndLine:
{
//found end line
linebox.SelectPartialFromStart(xposOnEndLine, this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(linebox);
}
break;
case LineCoverage.PartialLine:
{
linebox.SelectPartialFromStart((int)partialLineRun.Right, this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(linebox);
}
break;
case LineCoverage.FullLine:
{
//check if hitpoint is in the line area
linebox.SelectFull();
selectedLines.Add(linebox);
}
break;
}
});
}
