public override void ViewDidLoad ()
{
base.ViewDidLoad ();
textStorage = new InteractiveTextColoringTextStorage ();
CGRect newTextViewRect = View.Bounds;
newTextViewRect.X += 8;
newTextViewRect.Width -= 16;
var layoutManager = new NSLayoutManager ();
var container = new NSTextContainer (new CGSize (newTextViewRect.Size.Width, float.MaxValue));
container.WidthTracksTextView = true;
layoutManager.AddTextContainer (container);
textStorage.AddLayoutManager (layoutManager);
var newTextView = new UITextView (newTextViewRect, container);
newTextView.AutoresizingMask = UIViewAutoresizing.FlexibleHeight | UIViewAutoresizing.FlexibleWidth;
newTextView.ScrollEnabled = true;
newTextView.KeyboardDismissMode = UIScrollViewKeyboardDismissMode.OnDrag;
View.Add (newTextView);
var tokens = new Dictionary<string, NSDictionary> ();
tokens.Add ("Alice", new NSDictionary (UIStringAttributeKey.ForegroundColor, UIColor.Red));
tokens.Add ("Rabbit", new NSDictionary (UIStringAttributeKey.ForegroundColor, UIColor.Orange));
tokens.Add ("DefaultTokenName", new NSDictionary (UIStringAttributeKey.ForegroundColor, UIColor.Black));
textStorage.Tokens = tokens;
SetText ();
}
public override RectangleF CellFrameForTextContainer (NSTextContainer textContainer, RectangleF lineFrag, PointF position, uint charIndex)
{
var rect = base.CellFrameForTextContainer (textContainer, lineFrag, position, charIndex);
return new RectangleF (
rect.Location,
new SizeF (
rect.Width + padding * 2,
rect.Height + padding * 2
)
);
}
public override CGRect CellFrameForTextContainer (NSTextContainer textContainer, CGRect lineFrag, CGPoint position, nuint charIndex)
{
var rect = base.CellFrameForTextContainer (textContainer, lineFrag, position, charIndex);
return new CGRect (
rect.Location,
new CGSize (
rect.Width + padding * 2,
rect.Height + padding * 2
)
);
}
// We can't restore the scoller until layout has completed (because the scroller
// doesn't know how many lines there are until this happens).
public void layoutManager_didCompleteLayoutForTextContainer_atEnd(NSLayoutManager layout, NSTextContainer container, bool atEnd)
{
if (!m_closed)
{
if (m_restorer != null && (m_applier.Applied || m_language == null))
if (m_restorer.OnCompletedLayout(layout, atEnd))
m_restorer = null;
if (atEnd)
{
Broadcaster.Invoke("layout completed", m_boss);
DoPruneRanges();
}
}
}
public static void RecalculateSpanPositions(this NativeLabel control, Label element)
{
if (element?.FormattedText?.Spans == null ||
element.FormattedText.Spans.Count == 0)
{
return;
}
var finalSize = control.Frame;
if (finalSize.Width <= 0 || finalSize.Height <= 0)
{
return;
}
#if __MOBILE__
var inline = control.AttributedText;
#else
var inline = control.AttributedStringValue;
#endif
var range = new NSRange(0, inline.Length);
NSTextStorage textStorage = new NSTextStorage();
textStorage.SetString(inline);
var layoutManager = new NSLayoutManager();
textStorage.AddLayoutManager(layoutManager);
var textContainer = new NSTextContainer(size: finalSize.Size)
{
LineFragmentPadding = 0
};
layoutManager.AddTextContainer(textContainer);
var labelWidth = finalSize.Width;
var currentLocation = 0;
for (int i = 0; i < element.FormattedText.Spans.Count; i++)
{
var span = element.FormattedText.Spans[i];
var location = currentLocation;
var length = span.Text?.Length ?? 0;
if (length == 0)
{
continue;
}
var startRect = GetCharacterBounds(new NSRange(location, 1), layoutManager, textContainer);
var endRect = GetCharacterBounds(new NSRange(location + length, 1), layoutManager, textContainer);
var startLineHeight = startRect.Bottom - startRect.Top;
var endLineHeight = endRect.Bottom - endRect.Top;
var defaultLineHeight = control.FindDefaultLineHeight(location, length);
var yaxis = startRect.Top;
var lineHeights = new List <double>();
while (yaxis < endRect.Bottom)
{
double lineHeight;
if (yaxis == startRect.Top) // First Line
{
lineHeight = startRect.Bottom - startRect.Top;
}
else if (yaxis != endRect.Top) // Middle Line(s)
{
lineHeight = defaultLineHeight;
}
else // Bottom Line
{
lineHeight = endRect.Bottom - endRect.Top;
}
lineHeights.Add(lineHeight);
yaxis += (float)lineHeight;
}
((ISpatialElement)span).Region = Region.FromLines(lineHeights.ToArray(), finalSize.Width, startRect.X, endRect.X, startRect.Top).Inflate(10);
// update current location
currentLocation += length;
}
}
static CGRect GetCharacterBounds(NSRange characterRange, NSLayoutManager layoutManager, NSTextContainer textContainer)
{
var glyphRange = new NSRange();
#if __MOBILE__
layoutManager.CharacterRangeForGlyphRange(characterRange, ref glyphRange);
#else
layoutManager.CharacterRangeForGlyphRange(characterRange, out glyphRange);
#endif
return(layoutManager.BoundingRectForGlyphRange(glyphRange, textContainer));
}
public CGRect [] GetRectArray(NSRange glyphRange, NSRange selectedGlyphRange, NSTextContainer textContainer)
{
if (textContainer == null)
{
throw new ArgumentNullException("textContainer");
}
nuint rectCount;
var retHandle = GetRectArray(glyphRange, selectedGlyphRange, textContainer.Handle, out rectCount);
var returnArray = new CGRect [rectCount];
unsafe {
float *ptr = (float *)retHandle;
for (nuint i = 0; i < rectCount; ++i)
{
returnArray [i] = new CGRect(ptr [0], ptr [1], ptr [2], ptr [3]);
ptr += 4;
}
}
return(returnArray);
}
/// <summary>
/// Initializes a new instance of the <see cref="AppKit.TextKit.Formatter.SourceTextView"/> class.
/// </summary>
/// <param name="frameRect">Frame rect.</param>
/// <param name="container">Container.</param>
public SourceTextView(CGRect frameRect, NSTextContainer container) : base(frameRect, container)
{
// Init
Initialize();
}
public override void DrawRect(RectangleF dirtyRect)
{
var height = base.Bounds.Height;
var calcValue = base.Bounds.Width * (Value * 0.01f);
var context = NSGraphicsContext.CurrentContext.GraphicsPort;
context.SetStrokeColor("#999999".ToCGColor());
context.SetLineWidth (1.0F);
context.StrokeRect(new RectangleF(0, 0, base.Bounds.Width, height));
context.SetFillColor("#999999".ToCGColor());
context.FillRect(new RectangleF(0, 0, base.Bounds.Width, height));
context.SetFillColor(BackgroundColor.ToCGColor());
context.FillRect(new RectangleF(0, 0, calcValue, height));
var attrStr = "{0}".ToFormat(Label).CreateString("#ffffff".ToNSColor(), Font);
var storage = new NSTextStorage();
storage.SetString(attrStr);
var layout = new NSLayoutManager();
var container = new NSTextContainer();
layout.AddTextContainer(container);
storage.AddLayoutManager(layout);
// Get size
// var size = layout.GetUsedRectForTextContainer (container).Size;
// var width = size.Width / 2.0f;
var width = (base.Bounds.Width / 2.0f) - (TextOffset.X);
storage.DrawString(new PointF(width, TextOffset.Y));
}
public CustomUITextView(CGRect frame, NSTextContainer textContainer, string placeholder) : base(frame, textContainer)
{
InitializeComponents(placeholder);
}
public CustomUITextView(CGRect frame, NSTextContainer textContainer) : this(frame, textContainer, "")
{
}
private string DetectTappedUrl(UIGestureRecognizer tap, UILabel label, IEnumerable <LinkData> linkList)
{
var layoutManager = new NSLayoutManager();
var textContainer = new NSTextContainer();
var textStorage = new NSTextStorage();
textStorage.SetString(label.AttributedText);
layoutManager.AddTextContainer(textContainer);
textStorage.AddLayoutManager(layoutManager);
textContainer.LineFragmentPadding = 0;
textContainer.LineBreakMode = label.LineBreakMode;
textContainer.MaximumNumberOfLines = (nuint)label.Lines;
var labelSize = label.Bounds.Size;
textContainer.Size = labelSize;
var locationOfTouchInLabel = tap.LocationInView(label);
var textBoundingBox = layoutManager.GetUsedRectForTextContainer(textContainer);
var textContainerOffset = new CGPoint(
(labelSize.Width - textBoundingBox.Size.Width) * 0.0 - textBoundingBox.Location.X,
(labelSize.Height - textBoundingBox.Size.Height) * 0.0 - textBoundingBox.Location.Y);
nfloat labelX;
switch (Element.HorizontalTextAlignment)
{
case TextAlignment.End:
labelX = locationOfTouchInLabel.X - (labelSize.Width - textBoundingBox.Size.Width);
break;
case TextAlignment.Center:
labelX = locationOfTouchInLabel.X - (labelSize.Width - textBoundingBox.Size.Width) / 2;
break;
default:
labelX = locationOfTouchInLabel.X;
break;
}
var locationOfTouchInTextContainer = new CGPoint(labelX - textContainerOffset.X,
locationOfTouchInLabel.Y - textContainerOffset.Y);
nfloat partialFraction = 0;
var indexOfCharacter = (nint)layoutManager.CharacterIndexForPoint(locationOfTouchInTextContainer,
textContainer, ref partialFraction);
nint scaledIndexOfCharacter = 0;
if (label.Font.Name == "NeoSans-Light")
{
scaledIndexOfCharacter = (nint)(indexOfCharacter * 1.13);
}
if (label.Font.Name.StartsWith("HelveticaNeue", StringComparison.InvariantCulture))
{
scaledIndexOfCharacter = (nint)(indexOfCharacter * 1.02);
}
foreach (var link in linkList)
{
var rangeLength = link.Range.Length;
var tolerance = 0;
if (label.Font.Name == "NeoSans-Light")
{
rangeLength = (nint)(rangeLength * 1.13);
tolerance = 25;
indexOfCharacter = scaledIndexOfCharacter;
}
if (label.Font.Name.StartsWith("HelveticaNeue", StringComparison.InvariantCulture))
{
if (link.Range.Location > 2000)
{
indexOfCharacter = scaledIndexOfCharacter;
}
}
// Xamarin version of NSLocationInRange?
if ((indexOfCharacter >= (link.Range.Location - tolerance)) &&
(indexOfCharacter < (link.Range.Location + rangeLength + tolerance)))
{
return(link.Url);
}
}
return(null);
}
/// <summary>
/// Initializes a new instance of the <see cref="AppKit.TextKit.Formatter.SourceTextView"/> class.
/// </summary>
/// <param name="frameRect">Frame rect.</param>
/// <param name="container">Container.</param>
public SourceTextView (CGRect frameRect, NSTextContainer container) : base (frameRect, container)
{
// Init
Initialize();
}
public Editor(CoreGraphics.CGRect frame, NSTextContainer container)
: base(frame, container)
{
}
static CGRect GetCharacterBounds(NSRange characterRange, NSLayoutManager layoutManager, NSTextContainer textContainer)
{
var glyphRange = new NSRange();
#if __MOBILE__
layoutManager.CharacterRangeForGlyphRange(characterRange, ref glyphRange);
#else
#pragma warning disable CS0618 // Type or member is obsolete
layoutManager.CharacterRangeForGlyphRange(characterRange, out glyphRange);
#pragma warning restore CS0618 // Type or member is obsolete
#endif
return(layoutManager.BoundingRectForGlyphRange(glyphRange, textContainer));
}
public PlaceholderEnabledUITextView(CGRect frame, NSTextContainer container)
: base(frame, container)
{
this.CommonInit();
}
private string DetectTappedUrl(UIGestureRecognizer tap, UILabel label, IEnumerable <LinkData> linkList)
{
// Create instances of NSLayoutManager, NSTextContainer and NSTextStorage
var layoutManager = new NSLayoutManager();
var textContainer = new NSTextContainer();
var textStorage = new NSTextStorage();
textStorage.SetString(label.AttributedText);
// Configure layoutManager and textStorage
layoutManager.AddTextContainer(textContainer);
textStorage.AddLayoutManager(layoutManager);
// Configure textContainer
textContainer.LineFragmentPadding = 0;
textContainer.LineBreakMode = label.LineBreakMode;
textContainer.MaximumNumberOfLines = (nuint)label.Lines;
var labelSize = label.Bounds.Size;
textContainer.Size = labelSize;
// Find the tapped character location and compare it to the specified range
var locationOfTouchInLabel = tap.LocationInView(label);
var textBoundingBox = layoutManager.GetUsedRectForTextContainer(textContainer);
var textContainerOffset = new CGPoint((labelSize.Width - textBoundingBox.Size.Width) * 0.0 - textBoundingBox.Location.X,
(labelSize.Height - textBoundingBox.Size.Height) * 0.0 - textBoundingBox.Location.Y);
nfloat labelX;
switch (Element.HorizontalTextAlignment)
{
case TextAlignment.End:
labelX = locationOfTouchInLabel.X - (labelSize.Width - textBoundingBox.Size.Width);
break;
case TextAlignment.Center:
labelX = locationOfTouchInLabel.X - (labelSize.Width - textBoundingBox.Size.Width) / 2;
break;
default:
labelX = locationOfTouchInLabel.X;
break;
}
var locationOfTouchInTextContainer = new CGPoint(labelX - textContainerOffset.X, locationOfTouchInLabel.Y - textContainerOffset.Y);
nfloat partialFraction = 0;
var indexOfCharacter = (nint)layoutManager.CharacterIndexForPoint(locationOfTouchInTextContainer, textContainer, ref partialFraction);
nint scaledIndexOfCharacter = 0;
// Problem is that method CharacterIndexForPoint always returns index based on UILabel font
// ".SFUIText" which is the default Helvetica iOS font
// HACK is to scale indexOfCharacter for 13% because NeoSans-Light is narrower font than ".SFUIText"
if (label.Font.Name == "NeoSans-Light")
{
scaledIndexOfCharacter = (nint)((double)indexOfCharacter * 1.13);
}
// HelveticaNeue font family works perfect until character position in the string is more than 2000 chars
// some uncosnsistent behaviour
// if string has <b> tag than label.Font.Name from HelveticaNeue-Thin goes to HelveticaNeue-Bold
if (label.Font.Name.StartsWith("HelveticaNeue", StringComparison.InvariantCulture))
{
scaledIndexOfCharacter = (nint)((double)indexOfCharacter * 1.02);
}
foreach (var link in linkList)
{
var rangeLength = link.Range.Length;
var tolerance = 0;
if (label.Font.Name == "NeoSans-Light")
{
rangeLength = (nint)((double)rangeLength * 1.13);
tolerance = 25;
indexOfCharacter = scaledIndexOfCharacter;
}
if (label.Font.Name.StartsWith("HelveticaNeue", StringComparison.InvariantCulture))
{
if (link.Range.Location > 2000)
{
indexOfCharacter = scaledIndexOfCharacter;
}
}
// Xamarin version of NSLocationInRange?
if ((indexOfCharacter >= (link.Range.Location - tolerance)) && (indexOfCharacter < (link.Range.Location + rangeLength + tolerance)))
{
return(link.Url);
}
}
return(null);
}
public PlaceholderEnabledUITextView(CGRect frame, NSTextContainer container)
: base(frame, container)
{
this.CommonInit();
}
