public override void Draw(CoreGraphics.CGRect rect)
{
base.Draw(rect);
if (_path == null)
{
return;
}
using (CGContext g = UIGraphics.GetCurrentContext()) {
//set up drawing attributes
g.SetLineWidth(1);
UIColor.Clear.SetFill();
UIColor.Clear.SetStroke();
var attrString = new NSMutableAttributedString(" ");
if (_text != null)
{
attrString = new NSMutableAttributedString(_text);
}
// We'll Set the justification to center so it'll
// print the number in the center of the erect
CTParagraphStyle alignStyle = new CTParagraphStyle(new CTParagraphStyleSettings {
Alignment = _textAligment //CTTextAlignment.Left
});
// Calculate the range of the attributed string
NSRange stringRange = new NSRange(0, attrString.Length);
var font = new CTFont(_fontName, _fontSize);
// Add style attributes to the attributed string
attrString.AddAttributes(new CTStringAttributes {
Font = font,
ParagraphStyle = alignStyle,
ForegroundColor = Foreground.CGColor
}, stringRange);
// Create a container for the attributed string
using (var framesetter = new CTFramesetter(attrString)) {
using (var frame = framesetter.GetFrame(stringRange, _path, null)) {
g.SaveState();
g.TranslateCTM(0, TextHeight);
g.ScaleCTM(1, -1);
//g.RotateCTM (0.2f );
frame.Draw(g);
g.RestoreState();
}
}
}
}
private void DrawTemperatureNumber(double degree, double increase)
{
using (var font = new CTFont("Verdana", 10))
using (var context = UIGraphics.GetCurrentContext()) {
UIColor.Clear.SetFill();
CGRect erect = new CGRect(increase - 15, (.7 * sViewHeight) + 20, 30, 20);
// Fill and stroke the the circle first so the
// number will be drawn on top of the circle
// using (var path = new CGPath()) {
// path.AddEllipseInRect (erect);
// context.AddPath (path);
// context.DrawPath (CGPathDrawingMode.FillStroke);
// }
// Then draw the number 'on top of' the circle
using (var path = new CGPath())
using (var attrString = new NSMutableAttributedString(degree.ToString())) {
// We'll Set the justification to center so it'll
// print the number in the center of the erect
CTParagraphStyle alignStyle = new CTParagraphStyle(new CTParagraphStyleSettings {
Alignment = CTTextAlignment.Center
});
// Calculate the range of the attributed string
NSRange stringRange = new NSRange(0, attrString.Length);
// Add style attributes to the attributed string
attrString.AddAttributes(new CTStringAttributes {
Font = font,
ParagraphStyle = alignStyle,
ForegroundColor = UIColor.Red.CGColor
}, stringRange);
// Create a container for the attributed string
using (var framesetter = new CTFramesetter(attrString)) {
erect.Y = -erect.Y;
path.AddRect(erect);
using (var frame = framesetter.GetFrame(stringRange, path, null)) {
context.SaveState();
context.TranslateCTM((nfloat)0, erect.Height);
context.ScaleCTM(1, -1);
frame.Draw(context);
context.RestoreState();
}
}
}
}
}
public void StylePropertiesTest()
{
var settings = new CTParagraphStyleSettings()
{
TailIndent = 5,
ParagraphSpacingBefore = 5,
ParagraphSpacing = 5,
LineSpacing = 5,
MinimumLineHeight = 5,
MaximumLineHeight = 5,
LineHeightMultiple = 5,
DefaultTabInterval = 5,
HeadIndent = 5,
FirstLineHeadIndent = 5,
LineBreakMode = CTLineBreakMode.TruncatingHead,
BaseWritingDirection = CTWritingDirection.Natural,
Alignment = CTTextAlignment.Justified,
TabStops = new [] {
new CTTextTab(CTTextAlignment.Justified, 2),
new CTTextTab(CTTextAlignment.Natural, 1)
}
};
var style = new CTParagraphStyle(settings);
Assert.DoesNotThrow(() => {
Assert.AreEqual(settings.TailIndent, (nfloat)style.TailIndent, "TailIndent");
Assert.AreEqual(settings.ParagraphSpacingBefore, (nfloat)style.ParagraphSpacingBefore, "ParagraphSpacingBefore");
Assert.AreEqual(settings.ParagraphSpacing, (nfloat)style.ParagraphSpacing, "ParagraphSpacing");
Assert.AreEqual(settings.LineSpacing, (nfloat)style.LineSpacing, "LineSpacing");
Assert.AreEqual(settings.MinimumLineHeight, (nfloat)style.MinimumLineHeight, "MinimumLineHeight");
Assert.AreEqual(settings.MaximumLineHeight, (nfloat)style.MaximumLineHeight, "MaximumLineHeight");
Assert.AreEqual(settings.LineHeightMultiple, (nfloat)style.LineHeightMultiple, "LineHeightMultiple");
Assert.AreEqual(settings.DefaultTabInterval, (nfloat)style.DefaultTabInterval, "DefaultTabInterval");
Assert.AreEqual(settings.HeadIndent, (nfloat)style.HeadIndent, "HeadIndent");
Assert.AreEqual(settings.FirstLineHeadIndent, (nfloat)style.FirstLineHeadIndent, "FirstLineHeadIndent");
Assert.AreEqual(settings.LineBreakMode, style.LineBreakMode, "LineBreakMode");
Assert.AreEqual(settings.BaseWritingDirection, style.BaseWritingDirection, "LineBreakMode");
Assert.AreEqual(settings.Alignment, style.Alignment, "Alignment");
var styleTabStops = style.GetTabStops();
Assert.AreEqual(settings.TabStops.Count(), styleTabStops.Length, "TabStops");
Assert.True(styleTabStops.Any(t => t.Location == 2 && t.TextAlignment == CTTextAlignment.Justified));
Assert.True(styleTabStops.Any(t => t.Location == 1 && t.TextAlignment == CTTextAlignment.Natural));
});
}
private static NSMutableAttributedString buildAttributedString(string text, CTFont font,
Color?fontColor = null)
{
// Create a new attributed string from text
NSMutableAttributedString atts =
new NSMutableAttributedString(text);
var attRange = new NSRange(0, atts.Length);
var attsDic = new NSMutableDictionary();
// Font attribute
NSObject fontObject = new NSObject(font.Handle);
attsDic.Add(FontAttributedName, fontObject);
// -- end font
if (fontColor.HasValue)
{
// Font color
var fc = fontColor.Value;
NSColor color = NSColor.FromDeviceRgba(fc.R / 255f,
fc.G / 255f,
fc.B / 255f,
fc.A / 255f);
NSObject colorObject = new NSObject(color.Handle);
attsDic.Add(ForegroundColorAttributedName, colorObject);
// -- end font Color
}
if (underLine)
{
// Underline
int single = (int)MonoMac.AppKit.NSUnderlineStyle.Single;
int solid = (int)MonoMac.AppKit.NSUnderlinePattern.Solid;
var attss = single | solid;
var underlineObject = NSNumber.FromInt32(attss);
//var under = NSAttributedString.UnderlineStyleAttributeName.ToString();
attsDic.Add(UnderlineStyleAttributeName, underlineObject);
// --- end underline
}
if (strikeThrough)
{
// StrikeThrough
// NSColor bcolor = NSColor.Blue;
// NSObject bcolorObject = new NSObject(bcolor.Handle);
// attsDic.Add(NSAttributedString.StrikethroughColorAttributeName, bcolorObject);
int stsingle = (int)MonoMac.AppKit.NSUnderlineStyle.Single;
int stsolid = (int)MonoMac.AppKit.NSUnderlinePattern.Solid;
var stattss = stsingle | stsolid;
var stunderlineObject = NSNumber.FromInt32(stattss);
attsDic.Add(StrikethroughStyleAttributeName, stunderlineObject);
// --- end underline
}
// Text alignment
var alignment = CTTextAlignment.Left;
var alignmentSettings = new CTParagraphStyleSettings();
alignmentSettings.Alignment = alignment;
var paragraphStyle = new CTParagraphStyle(alignmentSettings);
NSObject psObject = new NSObject(paragraphStyle.Handle);
// end text alignment
attsDic.Add(ParagraphStyleAttributeName, psObject);
atts.SetAttributes(attsDic, attRange);
return(atts);
}
private static NSMutableAttributedString buildAttributedString(string text, Font font,
Color?fontColor = null)
{
// Create a new attributed string definition
var ctAttributes = new CTStringAttributes();
// Font attribute
ctAttributes.Font = font.nativeFont;
// -- end font
if (fontColor.HasValue)
{
// Font color
var fc = fontColor.Value;
var cgColor = new CGColor(fc.R / 255f,
fc.G / 255f,
fc.B / 255f,
fc.A / 255f);
ctAttributes.ForegroundColor = cgColor;
ctAttributes.ForegroundColorFromContext = false;
// -- end font Color
}
if (font.Underline)
{
// Underline
#if MONOMAC
int single = (int)AppKit.NSUnderlineStyle.Single;
int solid = (int)AppKit.NSUnderlinePattern.Solid;
var attss = single | solid;
ctAttributes.UnderlineStyleValue = attss;
#else
ctAttributes.UnderlineStyleValue = 1;
#endif
// --- end underline
}
if (font.Strikeout)
{
// StrikeThrough
// NSColor bcolor = NSColor.Blue;
// NSObject bcolorObject = new NSObject(bcolor.Handle);
// attsDic.Add(NSAttributedString.StrikethroughColorAttributeName, bcolorObject);
// #if MACOS
// int stsingle = (int)MonoMac.AppKit.NSUnderlineStyle.Single;
// int stsolid = (int)MonoMac.AppKit.NSUnderlinePattern.Solid;
// var stattss = stsingle | stsolid;
// var stunderlineObject = NSNumber.FromInt32(stattss);
// #else
// var stunderlineObject = NSNumber.FromInt32 (1);
// #endif
//
// attsDic.Add(StrikethroughStyleAttributeName, stunderlineObject);
// --- end underline
}
// Text alignment
var alignment = CTTextAlignment.Left;
var alignmentSettings = new CTParagraphStyleSettings();
alignmentSettings.Alignment = alignment;
var paragraphStyle = new CTParagraphStyle(alignmentSettings);
ctAttributes.ParagraphStyle = paragraphStyle;
// end text alignment
NSMutableAttributedString atts =
new NSMutableAttributedString(text, ctAttributes.Dictionary);
return(atts);
}
public SizeF GetStringSize(string aString, string aFontName, float aFontSize, HorizontalAlignment aHorizontalAlignment, VerticalAlignment aVerticalAlignment)
{
var fontSize = aFontSize;
float factor = 1;
while (fontSize > 10)
{
fontSize /= 10;
factor *= 10;
}
var vPath = new CGPath();
vPath.AddRect(new CGRect(0, 0, 512, 512));
vPath.CloseSubpath();
var vAttributedString = new NSMutableAttributedString(aString);
var vAttributes = new CTStringAttributes();
// Load the font
var vFont = NativeFontService.Instance.LoadFont(aFontName ?? _systemFontName, (float)fontSize);
vAttributes.Font = vFont;
// Set the horizontal alignment
var vParagraphSettings = new CTParagraphStyleSettings();
switch (aHorizontalAlignment)
{
case HorizontalAlignment.Left:
vParagraphSettings.Alignment = CTTextAlignment.Left;
break;
case HorizontalAlignment.Center:
vParagraphSettings.Alignment = CTTextAlignment.Center;
break;
case HorizontalAlignment.Right:
vParagraphSettings.Alignment = CTTextAlignment.Right;
break;
case HorizontalAlignment.Justified:
vParagraphSettings.Alignment = CTTextAlignment.Justified;
break;
}
var vParagraphStyle = new CTParagraphStyle(vParagraphSettings);
vAttributes.ParagraphStyle = vParagraphStyle;
// Set the attributes for the complete length of the string
vAttributedString.SetAttributes(vAttributes, new NSRange(0, aString.Length));
// Create the framesetter with the attributed string.
var vFrameSetter = new CTFramesetter(vAttributedString);
var textBounds = GetTextSize(vFrameSetter, vPath);
//Logger.Debug("{0} {1}",vSize,aString);
vFrameSetter.Dispose();
vAttributedString.Dispose();
vParagraphStyle.Dispose();
//vFont.Dispose();
vPath.Dispose();
textBounds.Width *= factor;
textBounds.Height *= factor;
//vSize.Width = Math.Ceiling(vSize.Width);
//vSize.Height = Math.Ceiling(vSize.Height);
return(textBounds.Size);
}
private NSMutableAttributedString buildAttributedString(string text, Font font, StringFormat format = null,
Color?fontColor = null)
{
// Create a new attributed string definition
var ctAttributes = new CTStringAttributes();
// Font attribute
ctAttributes.Font = font.nativeFont;
// -- end font
if (format != null && (format.FormatFlags & StringFormatFlags.DirectionVertical) == StringFormatFlags.DirectionVertical)
{
//ctAttributes.VerticalForms = true;
}
if (fontColor.HasValue)
{
// Font color
var fc = fontColor.Value;
var cgColor = new CGColor(fc.R / 255f,
fc.G / 255f,
fc.B / 255f,
fc.A / 255f);
ctAttributes.ForegroundColor = cgColor;
ctAttributes.ForegroundColorFromContext = false;
// -- end font Color
}
if (font.Underline)
{
// Underline
#if MONOMAC
int single = (int)AppKit.NSUnderlineStyle.Single;
int solid = (int)AppKit.NSUnderlinePattern.Solid;
var attss = single | solid;
ctAttributes.UnderlineStyleValue = attss;
#else
ctAttributes.UnderlineStyleValue = 1;
#endif
// --- end underline
}
if (font.Strikeout)
{
// StrikeThrough
#if MONOMAC
int single = (int)AppKit.NSUnderlineStyle.Single;
int solid = (int)AppKit.NSUnderlinePattern.Solid;
var attss = single | solid;
ctAttributes.UnderlineStyleValue = attss;
#else
ctAttributes.UnderlineStyleValue = 1;
#endif
// --- end StrikeThrough
}
var alignment = CTTextAlignment.Left;
var alignmentSettings = new CTParagraphStyleSettings();
alignmentSettings.Alignment = alignment;
var paragraphStyle = new CTParagraphStyle(alignmentSettings);
ctAttributes.ParagraphStyle = paragraphStyle;
// end text alignment
NSMutableAttributedString atts =
new NSMutableAttributedString(text, ctAttributes.Dictionary);
return(atts);
}
static void WriteParagraphStyle (CTParagraphStyle s)
{
WriteProperties (s);
var ts = s.GetTabStops ();
Console.WriteLine ("#\tTabStops: ({0})", ts.Length);
foreach (var t in ts) {
var o = t.GetOptions ();
Console.WriteLine ("#\t\tLocation={0}; TextAlignment={1}; ColumnTerminators={2}", t.Location, t.TextAlignment, o != null ? o.ColumnTerminators.ToString() : "<none>");
}
}
static void ParagraphStyleChecks ()
{
var s = new CTParagraphStyle (null);
Console.WriteLine ("# default CTParagraphStyle: ");
WriteParagraphStyle (s);
s = new CTParagraphStyle (new CTParagraphStyleSettings () {
TabStops = new CTTextTab[0],
MaximumLineHeight = 1.0f,
});
Console.WriteLine ("# modified CTParagraphStyle: ");
WriteParagraphStyle (s);
if (s.MaximumLineHeight != 1.0f)
throw new InvalidOperationException ("MaximumLineHeight property not set!");
if (s.GetTabStops ().Length != 0)
throw new InvalidOperationException ("TabStops property not set!");
}
private NSMutableAttributedString buildAttributedString(string text, Font font, StringFormat format = null,
Color? fontColor=null)
{
// Create a new attributed string definition
var ctAttributes = new CTStringAttributes ();
// Font attribute
ctAttributes.Font = font.nativeFont;
// -- end font
if (format != null && (format.FormatFlags & StringFormatFlags.DirectionVertical) == StringFormatFlags.DirectionVertical)
{
//ctAttributes.VerticalForms = true;
}
if (fontColor.HasValue) {
// Font color
var fc = fontColor.Value;
var cgColor = new CGColor(fc.R / 255f,
fc.G / 255f,
fc.B / 255f,
fc.A / 255f);
ctAttributes.ForegroundColor = cgColor;
ctAttributes.ForegroundColorFromContext = false;
// -- end font Color
}
if (font.Underline) {
// Underline
#if MONOMAC
int single = (int)AppKit.NSUnderlineStyle.Single;
int solid = (int)AppKit.NSUnderlinePattern.Solid;
var attss = single | solid;
ctAttributes.UnderlineStyleValue = attss;
#else
ctAttributes.UnderlineStyleValue = 1;
#endif
// --- end underline
}
if (font.Strikeout) {
// StrikeThrough
#if MONOMAC
int single = (int)AppKit.NSUnderlineStyle.Single;
int solid = (int)AppKit.NSUnderlinePattern.Solid;
var attss = single | solid;
ctAttributes.UnderlineStyleValue = attss;
#else
ctAttributes.UnderlineStyleValue = 1;
#endif
// --- end StrikeThrough
}
var alignment = CTTextAlignment.Left;
var alignmentSettings = new CTParagraphStyleSettings();
alignmentSettings.Alignment = alignment;
var paragraphStyle = new CTParagraphStyle(alignmentSettings);
ctAttributes.ParagraphStyle = paragraphStyle;
// end text alignment
NSMutableAttributedString atts =
new NSMutableAttributedString(text,ctAttributes.Dictionary);
return atts;
}
private static NSMutableAttributedString buildAttributedString(string text, Font font,
Color? fontColor=null)
{
// Create a new attributed string definition
var ctAttributes = new CTStringAttributes ();
// Font attribute
ctAttributes.Font = font.nativeFont;
// -- end font
if (fontColor.HasValue) {
// Font color
var fc = fontColor.Value;
var cgColor = new CGColor(fc.R / 255f,
fc.G / 255f,
fc.B / 255f,
fc.A / 255f);
ctAttributes.ForegroundColor = cgColor;
ctAttributes.ForegroundColorFromContext = false;
// -- end font Color
}
if (font.Underline) {
// Underline
#if MONOMAC
int single = (int)AppKit.NSUnderlineStyle.Single;
int solid = (int)AppKit.NSUnderlinePattern.Solid;
var attss = single | solid;
ctAttributes.UnderlineStyleValue = attss;
#else
ctAttributes.UnderlineStyleValue = 1;
#endif
// --- end underline
}
if (font.Strikeout) {
// StrikeThrough
// NSColor bcolor = NSColor.Blue;
// NSObject bcolorObject = new NSObject(bcolor.Handle);
// attsDic.Add(NSAttributedString.StrikethroughColorAttributeName, bcolorObject);
// #if MACOS
// int stsingle = (int)MonoMac.AppKit.NSUnderlineStyle.Single;
// int stsolid = (int)MonoMac.AppKit.NSUnderlinePattern.Solid;
// var stattss = stsingle | stsolid;
// var stunderlineObject = NSNumber.FromInt32(stattss);
// #else
// var stunderlineObject = NSNumber.FromInt32 (1);
// #endif
//
// attsDic.Add(StrikethroughStyleAttributeName, stunderlineObject);
// --- end underline
}
// Text alignment
var alignment = CTTextAlignment.Left;
var alignmentSettings = new CTParagraphStyleSettings();
alignmentSettings.Alignment = alignment;
var paragraphStyle = new CTParagraphStyle(alignmentSettings);
ctAttributes.ParagraphStyle = paragraphStyle;
// end text alignment
NSMutableAttributedString atts =
new NSMutableAttributedString(text,ctAttributes.Dictionary);
return atts;
}
public SizeF GetStringSize(
string value,
string fontName,
float fontSize,
HorizontalAlignment horizontalAlignment,
VerticalAlignment verticalAlignment)
{
float factor = 1;
while (fontSize > 10)
{
fontSize /= 10;
factor *= 10;
}
var path = new CGPath();
path.AddRect(new Drawing.RectangleF(0, 0, 512, 512));
path.CloseSubpath();
var attributedString = new NSMutableAttributedString(value);
var attributes = new CTStringAttributes();
// Load the font
var font = NativeFontService.Instance.LoadFont(fontName ?? SystemFontName, fontSize);
attributes.Font = font;
// Set the horizontal alignment
var paragraphSettings = new CTParagraphStyleSettings();
switch (horizontalAlignment)
{
case HorizontalAlignment.Left:
paragraphSettings.Alignment = CTTextAlignment.Left;
break;
case HorizontalAlignment.Center:
paragraphSettings.Alignment = CTTextAlignment.Center;
break;
case HorizontalAlignment.Right:
paragraphSettings.Alignment = CTTextAlignment.Right;
break;
case HorizontalAlignment.Justified:
paragraphSettings.Alignment = CTTextAlignment.Justified;
break;
}
var paragraphStyle = new CTParagraphStyle(paragraphSettings);
attributes.ParagraphStyle = paragraphStyle;
// Set the attributes for the complete length of the string
attributedString.SetAttributes(attributes, new NSRange(0, value.Length));
// Create the frame setter with the attributed string.
var frameSetter = new CTFramesetter(attributedString);
var textBounds = GetTextSize(frameSetter, path);
//Logger.Debug("{0} {1}",vSize,aString);
frameSetter.Dispose();
attributedString.Dispose();
paragraphStyle.Dispose();
//font.Dispose();
path.Dispose();
textBounds.Width *= factor;
textBounds.Height *= factor;
//size.Width = Math.Ceiling(vSize.Width);
//size.Height = Math.Ceiling(vSize.Height);
return(textBounds.Size);
}
void drawLabel(CGContext ctx, CGRect rect, nfloat yCoord, nfloat xCoord, CTTextAlignment alignment, UIColor color, string label, bool flipContext = true)
{
Console.WriteLine("Finish Draw code");
var attrString = new NSMutableAttributedString (label);
var range = new NSRange (0, attrString.Length);
var uiFont = UIFont.FromName("HelveticaNeue-Medium", range.Length > 1 ? 15 : 22);
var font = new CTFont (uiFont.Name, uiFont.PointSize); //((uiFont.Name as NSString) as CFString, uiFont.pointSize, nil);
var path = new CGPath ();
var alignStyle = new CTParagraphStyle (new CTParagraphStyleSettings { Alignment = alignment });
var attributes = new CTStringAttributes {
Font = font,
ForegroundColor = color.CGColor,
ParagraphStyle = alignStyle
};
attrString.SetAttributes(attributes, new NSRange (0, attrString.Length));
var target = new CGSize (nfloat.MaxValue, nfloat.MaxValue);
var fit = new NSRange (0, 0);
var framesetter = new CTFramesetter (attrString);
var frameSize = framesetter.SuggestFrameSize(range, null, target, out fit);
var textRect = new CGRect (xCoord - (frameSize.Width / 2), yCoord - (frameSize.Height / 2), frameSize.Width, frameSize.Height);
path.AddRect(textRect);
var frame = framesetter.GetFrame(range, path, null);
if (flipContext) {
ctx.SaveState();
ctx.TranslateCTM(0, rect.Height);
ctx.ScaleCTM(1, -1);
frame.Draw(ctx);
ctx.RestoreState();
} else {
frame.Draw(ctx);
}
}
