static bool FindCommonGround(CssBoxHitChain startChain, CssBoxHitChain endChain, out int breakAtLevel)
{
//find common ground of startChain and endChain
int startChainCount = startChain.Count;
int endChainCount = endChain.Count;
int lim = Math.Min(startChainCount, endChainCount);
//from root to leave
breakAtLevel = 0;
for (int i = 0; i < lim; ++i)
{
HitInfo startHitInfo = startChain.GetHitInfo(i);
HitInfo endHitInfo = endChain.GetHitInfo(i);
if (startHitInfo.hitObject != endHitInfo.hitObject)
{
//found diff here
breakAtLevel = i;
break;
}
}
//----------------------------
//check
//return isDeepDown = endChainCount > startChainCount && (breakAtLevel == startChainCount - 1);
return(endChainCount > startChainCount && (breakAtLevel == startChainCount - 1));
}
void SetupStartHitPoint(CssBoxHitChain startChain, ITextService textService)
{
//find global location of start point
HitInfo startHit = startChain.GetLastHit();
//-----------------------------
_startHitRun = null;
_startHitRunCharIndex = 0;
switch (startHit.hitObjectKind)
{
case HitObjectKind.Run:
{
CssRun run = (CssRun)startHit.hitObject;
//-------------------------------------------------------
int sel_index;
int sel_offset;
run.FindSelectionPoint(textService,
startHit.localX,
out sel_index,
out sel_offset);
_startHitRunCharIndex = sel_index;
//modify hitpoint
_startHitHostLine = (CssLineBox)startChain.GetHitInfo(startChain.Count - 2).hitObject;
_startLineBeginSelectionAtPixel = (int)(run.Left + sel_offset);
_startHitRun = run;
}
break;
case HitObjectKind.LineBox:
{
_startHitHostLine = (CssLineBox)startHit.hitObject;
_startLineBeginSelectionAtPixel = startHit.localX;
//make global
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)startHit.hitObject;
//find first nearest line at point
CssLineBox startHitLine = FindNearestLine(box, startChain.RootGlobalY, 5);
_startLineBeginSelectionAtPixel = 0;
if (startHitLine != null)
{
_startHitHostLine = startHitLine;
}
else
{
//if not found?
_startHitHostLine = null;
}
}
break;
default:
{
throw new NotSupportedException();
}
}
}
static void SetEventOrigin(UIEventArgs e, CssBoxHitChain hitChain)
{
int count = hitChain.Count;
if (count > 0)
{
e.SetExactHitObject(hitChain.GetHitInfo(count - 1).hitObject);
}
}
static void SetEventOrigin(UIEventArgs e, CssBoxHitChain hitChain)
{
int count = hitChain.Count;
if (count > 0)
{
var hitInfo = hitChain.GetHitInfo(count - 1);
e.ExactHitObject = hitInfo.hitObject;
}
}
static void SetEventOrigin(UIEventArgs e, CssBoxHitChain hitChain)
{
int count = hitChain.Count;
if (count > 0)
{
var hitInfo = hitChain.GetHitInfo(count - 1);
e.ExactHitObject = hitInfo.hitObject;
}
}
static void ForEachEventListenerBubbleUp(UIEventArgs e, CssBoxHitChain hitChain, EventListenerAction listenerAction)
{
for (int i = hitChain.Count - 1; i >= 0; --i)
{
//propagate up
var hitInfo = hitChain.GetHitInfo(i);
IEventListener controller = null;
switch (hitInfo.hitObjectKind)
{
default:
{
continue;
}
case HitObjectKind.Run:
{
CssRun run = (CssRun)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(run.OwnerBox) as IEventListener;
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(box) as IEventListener;
}
break;
}
//---------------------
if (controller != null)
{
//found controller
if (e.SourceHitElement == null)
{
e.SourceHitElement = controller;
}
e.CurrentContextElement = controller;
e.SetLocation(hitInfo.localX, hitInfo.localY);
if (listenerAction())
{
return;
}
}
}
}
static void ForEachOnlyEventPortalBubbleUp(UIEventArgs e, CssBoxHitChain hitPointChain, EventPortalAction eventPortalAction)
{
//only listener that need tunnel down
for (int i = hitPointChain.Count - 1; i >= 0; --i)
{
//propagate up
var hitInfo = hitPointChain.GetHitInfo(i);
IEventPortal controller = null;
switch (hitInfo.hitObjectKind)
{
default:
{
continue;
}
case HitObjectKind.Run:
{
CssRun run = (CssRun)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(run.OwnerBox) as IEventPortal;
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(box) as IEventPortal;
}
break;
}
//---------------------
if (controller != null)
{
e.SetLocation(hitInfo.localX, hitInfo.localY);
if (eventPortalAction(controller))
{
return;
}
}
}
}
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 bool FindCommonGround(CssBoxHitChain startChain, CssBoxHitChain endChain, out int breakAtLevel)
{
//find common ground of startChain and endChain
int startChainCount = startChain.Count;
int endChainCount = endChain.Count;
int lim = Math.Min(startChainCount, endChainCount);
//from root to leave
breakAtLevel = 0;
for (int i = 0; i < lim; ++i)
{
var startHitInfo = startChain.GetHitInfo(i);
var endHitInfo = endChain.GetHitInfo(i);
if (startHitInfo.hitObject != endHitInfo.hitObject)
{
//found diff here
breakAtLevel = i;
break;
}
}
//----------------------------
//check
//return isDeepDown = endChainCount > startChainCount && (breakAtLevel == startChainCount - 1);
return endChainCount > startChainCount && (breakAtLevel == startChainCount - 1);
}
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;
}
});
}
void SetupStartHitPoint(CssBoxHitChain startChain, IFonts ifonts)
{
//find global location of start point
HitInfo startHit = startChain.GetLastHit();
//-----------------------------
this.startHitRun = null;
this.startHitRunCharIndex = 0;
switch (startHit.hitObjectKind)
{
case HitObjectKind.Run:
{
CssRun run = (CssRun)startHit.hitObject;
//-------------------------------------------------------
int sel_index;
int sel_offset;
run.FindSelectionPoint(ifonts,
startHit.localX,
out sel_index,
out sel_offset);
this.startHitRunCharIndex = sel_index;
//modify hitpoint
this.startHitHostLine = (CssLineBox)startChain.GetHitInfo(startChain.Count - 2).hitObject;
this.startLineBeginSelectionAtPixel = (int)(run.Left + sel_offset);
this.startHitRun = run;
}
break;
case HitObjectKind.LineBox:
{
this.startHitHostLine = (CssLineBox)startHit.hitObject;
this.startLineBeginSelectionAtPixel = startHit.localX;
//make global
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)startHit.hitObject;
//find first nearest line at point
CssLineBox startHitLine = FindNearestLine(box, startChain.RootGlobalY, 5);
this.startLineBeginSelectionAtPixel = 0;
if (startHitLine != null)
{
this.startHitHostLine = startHitLine;
}
else
{
//if not found?
this.startHitHostLine = null;
}
}
break;
default:
{
throw new NotSupportedException();
}
}
}
static void ForEachEventListenerBubbleUp(UIEventArgs e, CssBoxHitChain hitChain, EventListenerAction listenerAction)
{
for (int i = hitChain.Count - 1; i >= 0; --i)
{
//propagate up
var hitInfo = hitChain.GetHitInfo(i);
IEventListener controller = null;
switch (hitInfo.hitObjectKind)
{
default:
{
continue;
}
case HitObjectKind.Run:
{
CssRun run = (CssRun)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(run.OwnerBox) as IEventListener;
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(box) as IEventListener;
}
break;
}
//---------------------
if (controller != null)
{
//found controller
if (e.SourceHitElement == null)
{
e.SourceHitElement = controller;
}
e.CurrentContextElement = controller;
e.SetLocation(hitInfo.localX, hitInfo.localY);
if (listenerAction())
{
return;
}
}
}
}
static void ForEachOnlyEventPortalBubbleUp(UIEventArgs e, CssBoxHitChain hitPointChain, EventPortalAction eventPortalAction)
{
//only listener that need tunnel down
for (int i = hitPointChain.Count - 1; i >= 0; --i)
{
//propagate up
var hitInfo = hitPointChain.GetHitInfo(i);
IEventPortal controller = null;
switch (hitInfo.hitObjectKind)
{
default:
{
continue;
}
case HitObjectKind.Run:
{
CssRun run = (CssRun)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(run.OwnerBox) as IEventPortal;
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(box) as IEventPortal;
}
break;
}
//---------------------
if (controller != null)
{
e.SetLocation(hitInfo.localX, hitInfo.localY);
if (eventPortalAction(controller))
{
return;
}
}
}
}