internal static float ZeroLinesFit(ICharSequence text, TextPaint paint, float min, float max, int availWidth, int availHeight)
{
if (availHeight > int.MaxValue / 3)
{
return(max);
}
if (availWidth > int.MaxValue / 3)
{
var fontMetrics = paint.GetFontMetrics();
var fontLineHeight = fontMetrics.Descent * FontScale - fontMetrics.Ascent * FontScale;
var fontPixelSize = paint.TextSize * FontScale;
var lineHeightRatio = fontLineHeight / fontPixelSize;
var result = (availHeight / lineHeightRatio - 0.1f);
return(System.Math.Min(result, max));
}
if (max - min < Precision)
{
return(min);
}
float mid = (max + min) / 2.0f;
paint.TextSize = mid * Scale;
var layout = TextExtensions.StaticLayout(text, paint, availWidth, Android.Text.Layout.Alignment.AlignNormal, 1.0f, 0.0f, true);
var lineCount = layout.LineCount;
var height = layout.Height - layout.BottomPadding + layout.TopPadding;
if (height > availHeight)
{
return(ZeroLinesFit(text, paint, min, mid, availWidth, availHeight));
}
if (height < availHeight)
{
return(ZeroLinesFit(text, paint, mid, max, availWidth, availHeight));
}
float maxLineWidth = 0;
for (int i = 0; i < lineCount; i++)
{
if (layout.GetLineWidth(i) > maxLineWidth)
{
maxLineWidth = layout.GetLineWidth(i);
}
}
if (maxLineWidth > availWidth)
{
return(ZeroLinesFit(text, paint, min, mid, availWidth, availHeight));
}
if (maxLineWidth < availWidth)
{
return(ZeroLinesFit(text, paint, mid, max, availWidth, availHeight));
}
return(mid);
}
#pragma warning disable IDE0060 // Remove unused parameter
static float DescendingWidthFit(ICharSequence text, TextPaint paint, int lines, float min, float max, int availWidth, int availHeight, float step)
#pragma warning restore IDE0060 // Remove unused parameter
{
float result;
for (result = max; result > min; result -= step)
{
paint.TextSize = result * Scale * FontScale;
var layout = TextExtensions.StaticLayout(text, paint, availWidth, Android.Text.Layout.Alignment.AlignNormal, 1.0f, 0.0f, true);
if (layout.LineCount <= lines)
{
return(result);
}
}
return(result);
}
static string EndTruncatedIter(string text, TextPaint paint, int secondToLastEnd, int start, int endLow, int endHigh, float availWidth)
{
if (endHigh - endLow <= 1)
{
return((secondToLastEnd > 0 ? text.Substring(0, secondToLastEnd).TrimEnd() + "\n" : "") + text.Substring(start, endLow - start) + "…");
}
int mid = (endLow + endHigh) / 2;
var lastLineText = new Java.Lang.String(text.Substring(start, mid - start) + "…");
var layout = TextExtensions.StaticLayout(lastLineText, paint, int.MaxValue - 10000, Android.Text.Layout.Alignment.AlignNormal, 1.0f, 0.0f, true);
if (layout.GetLineWidth(0) > availWidth)
{
return(EndTruncatedIter(text, paint, secondToLastEnd, start, endLow, mid, availWidth));
}
return(EndTruncatedIter(text, paint, secondToLastEnd, start, mid, endHigh, availWidth));
}
static ICharSequence EndTruncatedFormattedIter(F9PFormattedString baseFormattedString, TextPaint paint, int secondToLastEnd, int start, int endLow, int endHigh, float availWidth)
{
if (endHigh - endLow <= 1)
{
return(baseFormattedString.ToSpannableString(EllipsePlacement.End, secondToLastEnd, start, endLow));
}
int mid = (endLow + endHigh) / 2;
var formattedText = baseFormattedString.ToSpannableString(EllipsePlacement.End, 0, start, mid);
var layout = TextExtensions.StaticLayout(formattedText, paint, int.MaxValue - 10000, Android.Text.Layout.Alignment.AlignNormal, 1.0f, 0.0f, true);
if (layout.GetLineWidth(0) > availWidth)
{
return(EndTruncatedFormattedIter(baseFormattedString, paint, secondToLastEnd, start, endLow, mid, availWidth));
}
return(EndTruncatedFormattedIter(baseFormattedString, paint, secondToLastEnd, start, mid, endHigh, availWidth));
}
static string MidTruncatedIter(string text, TextPaint paint, int secondToLastEnd, int startLastVisible, int midLastVisible, int startLow, int startHigh, int end, float availWidth, float lineHeightMultiplier)
{
if (startHigh - startLow <= 1)
{
return((secondToLastEnd > 0 ? text.Substring(0, secondToLastEnd).TrimEnd() + "\n" : "") + text.Substring(startLastVisible, midLastVisible - startLastVisible).TrimEnd() + "…" + text.Substring(startHigh, end - startHigh).TrimStart());
}
int mid = (startLow + startHigh) / 2;
var lastLineText = new Java.Lang.String(text.Substring(startLastVisible, midLastVisible - startLastVisible).TrimEnd() + "…" + text.Substring(mid, end - mid).TrimStart());
using (var layout = TextExtensions.StaticLayout(lastLineText, paint, int.MaxValue - 10000, Android.Text.Layout.Alignment.AlignNormal, lineHeightMultiplier, 0.0f, true))
{
if (layout.GetLineWidth(0) > availWidth)
{
return(MidTruncatedIter(text, paint, secondToLastEnd, startLastVisible, midLastVisible, mid, startHigh, end, availWidth, lineHeightMultiplier));
}
return(MidTruncatedIter(text, paint, secondToLastEnd, startLastVisible, midLastVisible, startLow, mid, end, availWidth, lineHeightMultiplier));
}
}
static ICharSequence MidTruncatedFormattedIter(F9PFormattedString baseFormattedString, TextPaint paint, int secondToLastEnd, int startLastVisible, int midLastVisible, int startLow, int startHigh, int end, float availWidth, float lineHeightMultiplier)
{
if (startHigh - startLow <= 1)
{
return(baseFormattedString.ToSpannableString(EllipsePlacement.Mid, secondToLastEnd, startHigh, end, startLastVisible, midLastVisible));
}
int mid = (startLow + startHigh) / 2;
var formattedText = baseFormattedString.ToSpannableString(EllipsePlacement.Mid, 0, mid, end, startLastVisible, midLastVisible);
using (var layout = TextExtensions.StaticLayout(formattedText, paint, int.MaxValue - 10000, Android.Text.Layout.Alignment.AlignNormal, lineHeightMultiplier, 0.0f, true))
{
if (layout.GetLineWidth(0) > availWidth)
{
return(MidTruncatedFormattedIter(baseFormattedString, paint, secondToLastEnd, startLastVisible, midLastVisible, mid, startHigh, end, availWidth, lineHeightMultiplier));
}
return(MidTruncatedFormattedIter(baseFormattedString, paint, secondToLastEnd, startLastVisible, midLastVisible, startLow, mid, end, availWidth, lineHeightMultiplier));
}
}
SizeRequest InternalLayout(F9PTextView control, TextControlState state)
{
if (Element is Forms9Patch.Label element && control != null)
{
ICharSequence text = state.JavaText;
var tmpFontSize = BoundTextSize(element.FontSize);
control.Typeface = state.Typeface;
//control.SetTextColor(state.TextColor.ToAndroid());
UpdateColor(control);
control.TextSize = tmpFontSize;
control.IsNativeDrawEnabled = false;
control.SetSingleLine(false);
control.SetMaxLines(int.MaxValue / 2);
control.SetIncludeFontPadding(false);
control.Ellipsize = null;
double tmpHt = -1;
double tmpWd = -1;
var fontMetrics = control.Paint.GetFontMetrics();
var fontLineHeight = fontMetrics.Descent - fontMetrics.Ascent;
var fontLeading = System.Math.Abs(fontMetrics.Bottom - fontMetrics.Descent);
if (state.Lines == 0)
{
if (state.AvailHeight < int.MaxValue / 3)
{
tmpFontSize = TextPaintExtensions.ZeroLinesFit(state.JavaText, new TextPaint(control.Paint), ModelMinFontSize, tmpFontSize, state.AvailWidth, state.AvailHeight);
}
}
else
{
if (state.AutoFit == AutoFit.Lines)
{
if (state.AvailHeight > int.MaxValue / 3)
{
tmpHt = System.Math.Round(state.Lines * fontLineHeight + (state.Lines - 1) * fontLeading);
}
else
{
var fontPointSize = tmpFontSize;
var lineHeightRatio = fontLineHeight / fontPointSize;
var leadingRatio = fontLeading / fontPointSize;
tmpFontSize = ((state.AvailHeight / (state.Lines + leadingRatio * (state.Lines - 1))) / lineHeightRatio - 0.1f);
}
}
else if (state.AutoFit == AutoFit.Width)
{
tmpFontSize = TextPaintExtensions.WidthFit(state.JavaText, new TextPaint(control.Paint), state.Lines, ModelMinFontSize, tmpFontSize, state.AvailWidth, state.AvailHeight);
}
}
tmpFontSize = BoundTextSize(tmpFontSize);
// this is the optimal font size. Let it be known!
if (System.Math.Abs(tmpFontSize - element.FittedFontSize) > 0.1)
{
if (System.Math.Abs(tmpFontSize - element.FontSize) < 0.1 || (element.FontSize < 0 && System.Math.Abs(tmpFontSize - F9PTextView.DefaultTextSize) < 0.1))
{
element.FittedFontSize = -1;
}
else
{
element.FittedFontSize = tmpFontSize;
}
}
var syncFontSize = (float)((ILabel)element).SynchronizedFontSize;
if (syncFontSize >= 0 && System.Math.Abs(tmpFontSize - syncFontSize) > 0.1)
{
tmpFontSize = syncFontSize;
}
control.TextSize = tmpFontSize;
state.RenderedFontSize = tmpFontSize;
var layout = TextExtensions.StaticLayout(state.JavaText, new TextPaint(control.Paint), state.AvailWidth, Android.Text.Layout.Alignment.AlignNormal, 1.0f, 0.0f, true);
int lines = state.Lines;
if (lines == 0 && state.AutoFit == AutoFit.None)
{
for (int i = 0; i < layout.LineCount; i++)
{
if (layout.GetLineBottom(i) <= state.AvailHeight - layout.TopPadding - layout.BottomPadding)
{
lines++;
}
else
{
break;
}
}
}
if (layout.Height > state.AvailHeight || (lines > 0 && layout.LineCount > lines))
{
if (state.Lines == 1)
{
control.SetSingleLine(true);
control.SetMaxLines(1);
control.Ellipsize = state.LineBreakMode.ToEllipsize();
}
else
{
layout = TextPaintExtensions.Truncate(state.Text, element.F9PFormattedString, new TextPaint(control.Paint), state.AvailWidth, state.AvailHeight, element.AutoFit, element.LineBreakMode, ref lines, ref text);
}
}
lines = lines > 0 ? System.Math.Min(lines, layout.LineCount) : layout.LineCount;
for (int i = 0; i < lines; i++)
{
tmpHt = layout.GetLineBottom(i);
var width = layout.GetLineWidth(i);
if (width > tmpWd)
{
tmpWd = System.Math.Ceiling(width);
}
}
if (state.AutoFit == AutoFit.None && state.Lines > 0)
{
control.SetMaxLines(state.Lines);
}
if (element.IsDynamicallySized && state.Lines > 0 && state.AutoFit == AutoFit.Lines)
{
fontMetrics = control.Paint.GetFontMetrics();
fontLineHeight = fontMetrics.Descent - fontMetrics.Ascent;
fontLeading = System.Math.Abs(fontMetrics.Bottom - fontMetrics.Descent);
tmpHt = fontLineHeight * state.Lines + fontLeading * (state.Lines - 1);
}
control.Gravity = element.HorizontalTextAlignment.ToHorizontalGravityFlags() | element.VerticalTextAlignment.ToVerticalGravityFlags();
if (element.Text != null)
{
control.Text = text.ToString();
}
else
{
control.TextFormatted = text;
}
var result = new SizeRequest(new Size(System.Math.Ceiling(tmpWd), System.Math.Ceiling(tmpHt)), new Size(10, System.Math.Ceiling(tmpHt)));
if (element.LineBreakMode == LineBreakMode.NoWrap)
{
control.SetSingleLine(true);
}
control.IsNativeDrawEnabled = true;
if (control == Control)
{
//P42.Utils.Debug.Message(Element?.HtmlText, "!!!~~~~~~~ REQUEST LAYOUT~~~~~~~~~!!!");
// none of the below seems to help the issue where the label is not apparing in ConnectionCalc cells
//Control.RequestLayout();
////P42.Utils.Debug.Message(Element?.HtmlText, "Control.Invalidate()");
//Control.Invalidate();
//Invalidate();
//var widthSpec = MeasureSpec.MakeMeasureSpec(tmpWd, Android.Views.MeasureSpecMode.Exactly);
//var heightSpec = MeasureSpec.MakeMeasureSpec(tmpHt, Android.Views.MeasureSpecMode.Exactly);
//Control.Measure(widthSpec, heightSpec);
//Control.RequestLayout();
//Control.Layout(0, 0, (int)System.Math.Ceiling(tmpWd), (int)System.Math.Ceiling(tmpHt));
//Control
}
return(result);
}
return(new SizeRequest(Size.Zero));
}
#pragma warning disable IDE0060 // Remove unused parameter
internal static StaticLayout Truncate(string text, Forms9Patch.F9PFormattedString baseFormattedString, TextPaint paint, int availWidth, int availHeight, AutoFit fit, LineBreakMode lineBreakMode, ref int lines, ref ICharSequence textFormatted)
#pragma warning restore IDE0060 // Remove unused parameter
{
StaticLayout layout;
var fontMetrics = paint.GetFontMetrics();
var fontLineHeight = fontMetrics.Descent - fontMetrics.Ascent;
var fontLeading = System.Math.Abs(fontMetrics.Bottom - fontMetrics.Descent);
textFormatted = ((ICharSequence)baseFormattedString?.ToSpannableString()) ?? new Java.Lang.String(text);
if (lines > 0)
{
if (baseFormattedString != null)
{
layout = TextExtensions.StaticLayout(textFormatted, paint, availWidth, Android.Text.Layout.Alignment.AlignNormal, 1.0f, 0.0f, true);
if (layout.Height > availHeight)
{
var visibleLines = (int)((fontLeading + availHeight) / (fontLineHeight + fontLeading));
if (visibleLines < lines)
{
lines = visibleLines;
}
}
if (layout.LineCount > lines && lines > 0)
{
var secondToLastEnd = lines > 1 ? layout.GetLineEnd(lines - 2) : 0;
var start = lines > 1 ? layout.GetLineStart(layout.LineCount - 2) : 0;
switch (lineBreakMode)
{
case LineBreakMode.HeadTruncation:
textFormatted = StartTruncatedFormatted(baseFormattedString, paint, secondToLastEnd, start, layout.GetLineEnd(layout.LineCount - 1), availWidth);
break;
case LineBreakMode.MiddleTruncation:
textFormatted = MidTruncatedFormatted(baseFormattedString, paint, secondToLastEnd, layout.GetLineStart(lines - 1), (layout.GetLineEnd(lines - 1) + layout.GetLineStart(lines - 1)) / 2 - 1, start, layout.GetLineEnd(layout.LineCount - 1), availWidth);
break;
case LineBreakMode.TailTruncation:
textFormatted = EndTruncatedFormatted(baseFormattedString, paint, secondToLastEnd, layout.GetLineStart(lines - 1), layout.GetLineEnd(layout.LineCount - 1), availWidth);
break;
default:
textFormatted = TruncatedFormatted(baseFormattedString, paint, secondToLastEnd, layout.GetLineStart(lines - 1), layout.GetLineEnd(layout.LineCount - 1), availWidth);
break;
}
}
}
else
{
layout = TextExtensions.StaticLayout(text, paint, availWidth, Android.Text.Layout.Alignment.AlignNormal, 1.0f, 0.0f, true);
if (layout.Height > availHeight)
{
var visibleLines = (int)((fontLeading + availHeight) / (fontLineHeight + fontLeading));
if (visibleLines < lines)
{
lines = visibleLines;
}
}
if (layout.LineCount > lines && lines > 0)
{
var secondToLastEnd = lines > 1 ? layout.GetLineEnd(lines - 2) : 0;
var start = lines > 1 ? layout.GetLineStart(layout.LineCount - 2) : 0;
switch (lineBreakMode)
{
case LineBreakMode.HeadTruncation:
text = StartTruncatedLastLine(text, paint, secondToLastEnd, start, layout.GetLineEnd(layout.LineCount - 1), availWidth);
break;
case LineBreakMode.MiddleTruncation:
text = MidTruncatedLastLine(text, paint, secondToLastEnd, layout.GetLineStart(lines - 1), (layout.GetLineEnd(lines - 1) + layout.GetLineStart(lines - 1)) / 2 - 1, start, layout.GetLineEnd(layout.LineCount - 1), availWidth);
break;
case LineBreakMode.TailTruncation:
text = EndTruncatedLastLine(text, paint, secondToLastEnd, layout.GetLineStart(lines - 1), layout.GetLineEnd(layout.LineCount - 1), availWidth);
break;
default:
text = text.Substring(0, layout.GetLineEnd(lines - 1));
break;
}
textFormatted = new Java.Lang.String(text);
}
}
}
var result = TextExtensions.StaticLayout(textFormatted, paint, availWidth, Android.Text.Layout.Alignment.AlignNormal, 1.0f, 0.0f, true);
return(result);
}
