public static void SetCachedFormattedString(CssTextRun textrun, PixelFarm.Drawing.RenderVxFormattedString cache)
{
if (textrun._cacheRenderVx != null && textrun._cacheRenderVx != cache)
{
textrun._cacheRenderVx.Dispose();
}
textrun._cacheRenderVx = cache;
}
/// <summary>
/// Assigns words its width and height
/// </summary>
/// <param name="g"></param>
public virtual void MeasureRunsSize(LayoutVisitor lay)
{
//measure once !
if ((_boxCompactFlags & BoxFlags.LAY_RUNSIZE_MEASURE) != 0)
{
return;
}
//--------------------------------
if (this.BackgroundImageBinder != null)
{
//this has background
if (this.BackgroundImageBinder.State == BinderState.Unload)
{
lay.RequestImage(this.BackgroundImageBinder, this);
}
}
//--------------------------------
if (this.RunCount > 0)
{
//find word spacing
float actualWordspacing = _actualWordSpacing;
RequestFont actualFont = this.ResolvedFont;
float fontHeight = (actualFont.AscentInPixels - actualFont.DescentInPixels + actualFont.LineGapInPixels);
fontHeight += 4; //TODO: why +4 ????***
List <CssRun> tmpRuns = this.Runs;
for (int i = tmpRuns.Count - 1; i >= 0; --i)
{
CssRun run = tmpRuns[i];
run.Height = fontHeight;
//if this is newline then width =0 ***
switch (run.Kind)
{
case CssRunKind.Text:
{
CssTextRun textRun = (CssTextRun)run;
Size ss = lay.MeasureStringSize(CssBox.UnsafeGetTextBuffer(this),
textRun.TextStartIndex,
textRun.TextLength,
actualFont);
run.SetSize(ss.Width, ss.Height);
}
break;
case CssRunKind.SingleSpace:
{
run.Width = actualWordspacing;
}
break;
case CssRunKind.Space:
{
//other space size
run.Width = actualWordspacing * ((CssTextRun)run).TextLength;
}
break;
case CssRunKind.LineBreak:
{
run.Width = 0;
}
break;
}
}
}
_boxCompactFlags |= BoxFlags.LAY_RUNSIZE_MEASURE;
}
internal void PaintRuns(PaintVisitor p)
{
List <CssRun> tmpRuns = _runs;
int j = tmpRuns.Count;
if (j < 1)
{
return;
}
//-----------------------
//iterate from each words
CssBox latestOwner = null;
DrawBoard innerCanvas = p.InnerDrawBoard;
RequestFont enterFont = innerCanvas.CurrentFont;
Color enterColor = innerCanvas.CurrentTextColor;
for (int i = 0; i < j; ++i)
{
//-----------------
#if DEBUG
dbugCounter.dbugRunPaintCount++;
#endif
//-----------------
CssRun w = tmpRuns[i];
switch (w.Kind)
{
case CssRunKind.SolidContent:
{
w.OwnerBox.Paint(p, new RectangleF(w.Left, w.Top, w.Width, w.Height));
}
break;
case CssRunKind.BlockRun:
{
//Console.WriteLine("blockrun");
CssBlockRun blockRun = (CssBlockRun)w;
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
//p.SetCanvasOrigin(ox + (int)(blockRun.Left + blockRun.ContentBox.LocalX), oy + (int)blockRun.Top);
p.SetCanvasOrigin(ox + (int)(blockRun.Left), oy + (int)blockRun.Top);
blockRun.ContentBox.Paint(p);
p.SetCanvasOrigin(ox, oy);
}
break;
case CssRunKind.Text:
{
if (latestOwner != w.OwnerBox)
{
//change
latestOwner = w.OwnerBox;
//change font when change owner
p.InnerDrawBoard.CurrentFont = latestOwner.ResolvedFont;
p.InnerDrawBoard.CurrentTextColor = latestOwner.ActualColor;
}
CssTextRun textRun = (CssTextRun)w;
p.DrawText(CssBox.UnsafeGetTextBuffer(w.OwnerBox),
textRun.TextStartIndex,
textRun.TextLength,
new PointF(w.Left, w.Top),
new SizeF(w.Width, w.Height));
}
break;
default:
{
#if DEBUG
// w.OwnerBox.dbugPaintTextWordArea(g, offset, w);
#endif
}
break;
}
}
innerCanvas.CurrentFont = enterFont;
innerCanvas.CurrentTextColor = enterColor;
}
internal void PaintRuns(PaintVisitor p)
{
List <CssRun> tmpRuns = _runs;
int j = tmpRuns.Count;
if (j < 1)
{
return;
}
//-----------------------
//iterate from each words
CssBox latestOwner = null;
DrawBoard innerCanvas = p.InnerDrawBoard;
RequestFont enterFont = innerCanvas.CurrentFont;
Color enterColor = innerCanvas.CurrentTextColor;
for (int i = 0; i < j; ++i)
{
//-----------------
#if DEBUG
dbugCounter.dbugRunPaintCount++;
#endif
//-----------------
CssRun w = tmpRuns[i];
switch (w.Kind)
{
case CssRunKind.SolidContent:
{
#if DEBUG
//System.Diagnostics.Debug.WriteLine("ox,oy=" + p.CanvasOriginX + "," + p.CanvasOriginY);
//System.Diagnostics.Debug.WriteLine("clip=" + p.CurrentClipRect);
#endif
Rectangle currentClipRect = p.CurrentClipRect;
Rectangle wRect = new Rectangle((int)w.Left, (int)w.Top, (int)w.Width, (int)w.Height);
wRect.Intersect(currentClipRect);
#if DEBUG
//System.Diagnostics.Debug.WriteLine("empty_clip=" + (wRect.Height == 0 || wRect.Width == 0));
#endif
if (wRect.Height != 0 && wRect.Width != 0)
{
w.OwnerBox.Paint(p, new RectangleF(w.Left, w.Top, w.Width, w.Height));
}
}
break;
case CssRunKind.BlockRun:
{
//Console.WriteLine("blockrun");
CssBlockRun blockRun = (CssBlockRun)w;
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
//p.SetCanvasOrigin(ox + (int)(blockRun.Left + blockRun.ContentBox.LocalX), oy + (int)blockRun.Top);
p.SetCanvasOrigin(ox + (int)(blockRun.Left), oy + (int)blockRun.Top);
blockRun.ContentBox.Paint(p);
p.SetCanvasOrigin(ox, oy);
}
break;
case CssRunKind.Text:
{
if (latestOwner != w.OwnerBox)
{
//change
latestOwner = w.OwnerBox;
//change font when change owner
p.InnerDrawBoard.CurrentFont = latestOwner.ResolvedFont;
p.InnerDrawBoard.CurrentTextColor = latestOwner.ActualColor;
}
CssTextRun textRun = (CssTextRun)w;
p.DrawText(CssBox.UnsafeGetTextBuffer(w.OwnerBox),
textRun.TextStartIndex,
textRun.TextLength,
new PointF(w.Left, w.Top),
new SizeF(w.Width, w.Height));
//RenderVxFormattedString formattedStr = CssTextRun.GetCachedFormatString(textRun);
//if (formattedStr == null)
//{
// formattedStr = p.CreateRenderVx(CssBox.UnsafeGetTextBuffer(w.OwnerBox),
// textRun.TextStartIndex,
// textRun.TextLength);
// CssTextRun.SetCachedFormattedString(textRun, formattedStr);
//}
//if (formattedStr != null)
//{
// p.DrawText(formattedStr,
// new PointF(w.Left, w.Top),
// new SizeF(w.Width, w.Height));
//}
//else
//{
// p.DrawText(CssBox.UnsafeGetTextBuffer(w.OwnerBox),
// textRun.TextStartIndex,
// textRun.TextLength,
// new PointF(w.Left, w.Top),
// new SizeF(w.Width, w.Height));
//}
}
break;
default:
{
#if DEBUG
// w.OwnerBox.dbugPaintTextWordArea(g, offset, w);
#endif
}
break;
}
}
innerCanvas.CurrentFont = enterFont;
innerCanvas.CurrentTextColor = enterColor;
}
internal void FindSelectionPoint(ITextService ifonts,
int offset, out int selectionIndex,
out int runSelectionOffsetPx)
{
int charFit;
int charFitWidth;
var maxWidth = offset;
switch (this.Kind)
{
case CssRunKind.BlockRun:
{
//contains sub
selectionIndex = -1;
runSelectionOffsetPx = 0;
}
break;
case CssRunKind.SolidContent:
{
// not a text word - set full selection
selectionIndex = -1;
runSelectionOffsetPx = 0;
}
break;
case CssRunKind.Text:
{
char[] ownerTextBuff = CssBox.UnsafeGetTextBuffer(this.OwnerBox);
CssTextRun textRun = (CssTextRun)this;
var textBuf = new TextBufferSpan(ownerTextBuff, textRun.TextStartIndex, textRun.TextLength);
ifonts.MeasureString(ref textBuf,
this.OwnerBox.ResolvedFont, maxWidth, out charFit, out charFitWidth);
selectionIndex = charFit;
runSelectionOffsetPx = charFitWidth;
}
break;
case CssRunKind.Space:
{
char[] ownerTextBuff = CssBox.UnsafeGetTextBuffer(this.OwnerBox);
CssTextRun textRun = (CssTextRun)this;
var textBuf = new TextBufferSpan(ownerTextBuff, textRun.TextStartIndex, textRun.TextLength);
ifonts.MeasureString(ref textBuf,
this.OwnerBox.ResolvedFont, maxWidth, out charFit, out charFitWidth);
selectionIndex = charFit;
runSelectionOffsetPx = charFitWidth;
}
break;
case CssRunKind.SingleSpace:
{
if (offset > this.Width / 2)
{
selectionIndex = -1;
runSelectionOffsetPx = 0;
}
else
{
selectionIndex = 0;
runSelectionOffsetPx = (int)this.Width;
}
}
break;
default:
{
throw new NotSupportedException();
}
}
}
public static PixelFarm.Drawing.RenderVxFormattedString GetCachedFormatString(CssTextRun textrun) => textrun._cacheRenderVx;
/// <summary>
/// Assigns words its width and height
/// </summary>
/// <param name="g"></param>
public virtual void MeasureRunsSize(LayoutVisitor lay)
{
//measure once !
if ((this._boxCompactFlags & BoxFlags.LAY_RUNSIZE_MEASURE) != 0)
{
return;
}
//--------------------------------
if (this.BackgroundImageBinder != null)
{
//this has background
if (this.BackgroundImageBinder.State == ImageBinderState.Unload)
{
lay.RequestImage(this.BackgroundImageBinder, this);
}
}
//--------------------------------
if (this.RunCount > 0)
{
//find word spacing
float actualWordspacing = this._actualWordSpacing;
Font actualFont = this.ActualFont;
var fontInfo = actualFont.FontInfo;
float fontHeight = fontInfo.LineHeight;
var tmpRuns = this.Runs;
for (int i = tmpRuns.Count - 1; i >= 0; --i)
{
CssRun run = tmpRuns[i];
run.Height = fontHeight;
//if this is newline then width =0 ***
switch (run.Kind)
{
case CssRunKind.Text:
{
CssTextRun textRun = (CssTextRun)run;
run.Width = lay.MeasureStringWidth(
CssBox.UnsafeGetTextBuffer(this),
textRun.TextStartIndex,
textRun.TextLength,
actualFont);
}
break;
case CssRunKind.SingleSpace:
{
run.Width = actualWordspacing;
}
break;
case CssRunKind.Space:
{
//other space size
run.Width = actualWordspacing * ((CssTextRun)run).TextLength;
}
break;
case CssRunKind.LineBreak:
{
run.Width = 0;
}
break;
}
}
}
this._boxCompactFlags |= BoxFlags.LAY_RUNSIZE_MEASURE;
}