| abstract private Setup ( Graphics graphics, bool fill ) : void | ||
| graphics | Graphics | |
| fill | bool | |
| Результат | void | |
public void FillEllipse(Brush brush, RectangleF rect)
{
if (brush == null)
{
throw new ArgumentNullException("brush");
}
brush.Setup(this, true);
context.FillEllipseInRect(rect);
}
void FillBrush(Brush brush, FillMode fillMode = FillMode.Alternate)
{
brush.Setup(this, true);
if (fillMode == FillMode.Alternate)
{
context.EOFillPath();
}
else
{
context.FillPath();
}
}
internal void Setup(Graphics graphics, bool fill)
{
brush.Setup(graphics, fill);
// TODO: apply matrix
if (graphics.LastPen == this && !changed)
{
return;
}
graphics.context.SetLineWidth(width);
// miter limit
// join
// cap
// dashes
changed = false;
graphics.LastPen = this;
}
internal DrawStringCache.Entry CreateCacheEntry(string s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format)
{
if (font == null)
{
throw new ArgumentNullException(nameof(font));
}
if (brush == null)
{
throw new ArgumentNullException(nameof(brush));
}
layoutRectangle.Location = PointF.Empty;
var c = new DrawStringCache.Entry(s, font, brush, layoutRectangle, format);
brush.Setup(this, false); // Stroke
var attributedString = buildAttributedString(s, font, format, lastBrushColor);
// Work out the geometry
c.layoutAvailable = true;
var insetBounds = layoutRectangle;
if (insetBounds.Size == SizeF.Empty)
{
insetBounds.Width = float.MaxValue;
insetBounds.Height = float.MaxValue;
c.layoutAvailable = false;
}
c.lineHeight = font.nativeFont.GetLineHeight();
c.lines = new List <CTLine>();
c.verticalMatrix = default(CGAffineTransform);
// Calculate the lines
// If we are drawing vertical direction then we need to rotate our context transform by 90 degrees
if ((format.FormatFlags & StringFormatFlags.DirectionVertical) == StringFormatFlags.DirectionVertical)
{
// Swap out the width and height and calculate the lines
c.lines = CreateLines(font, attributedString, new SizeF(insetBounds.Height, insetBounds.Width), format, c.lineHeight);
c.boundsWidth = insetBounds.Height;
c.boundsHeight = insetBounds.Width;
}
else
{
c.lines = CreateLines(font, attributedString, insetBounds.Size, format, c.lineHeight);
c.boundsWidth = insetBounds.Width;
c.boundsHeight = insetBounds.Height;
}
c.textPosition = new PointF(insetBounds.X + .5f, insetBounds.Y + .5f);
if (c.layoutAvailable)
{
if (format.LineAlignment == StringAlignment.Far)
{
c.textPosition.Y += c.boundsHeight - (c.lines.Count * c.lineHeight);
}
else if (format.LineAlignment == StringAlignment.Center)
{
c.textPosition.Y += (c.boundsHeight - (c.lines.Count * c.lineHeight)) / 2;
}
}
else
{
// Precalculate maximum width to allow for aligning lines
if (format.Alignment != StringAlignment.Near)
{
float maxLineWidth = 0;
foreach (var line in c.lines)
{
if (line != null)
{
nfloat ascent, descent, leading;
var lineWidth = line.GetTypographicBounds(out ascent, out descent, out leading);
if ((format.FormatFlags & StringFormatFlags.MeasureTrailingSpaces) != 0)
{
lineWidth += line.TrailingWhitespaceWidth;
}
maxLineWidth = Math.Max(maxLineWidth, (float)NMath.Ceiling((float)lineWidth));
}
}
c.boundsWidth = maxLineWidth;
}
if (format.LineAlignment == StringAlignment.Far)
{
c.textPosition.Y -= c.lineHeight * c.lines.Count;
}
else if (format.LineAlignment == StringAlignment.Center)
{
c.textPosition.Y -= (c.lineHeight * c.lines.Count) / 2;
}
}
return(c);
}
public void DrawString(string s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format = null)
{
if (font == null)
throw new ArgumentNullException ("font");
if (brush == null)
throw new ArgumentNullException ("brush");
if (s == null || s.Length == 0)
return;
if (format == null)
{
format = StringFormat.GenericDefault;
}
// TODO: Take into consideration units
// Not sure we need the Save and Restore around this yet.
context.SaveState();
// TextMatrix is not part of the Graphics State and Restore
var saveMatrix = context.TextMatrix;
bool layoutAvailable = true;
// context.SelectFont ( font.nativeFont.PostScriptName,
// font.SizeInPoints,
// CGTextEncoding.MacRoman);
//
// context.SetCharacterSpacing(1);
// context.SetTextDrawingMode(CGTextDrawingMode.Fill); // 5
//
// // Setup both the stroke and the fill ?
// brush.Setup(this, true);
// brush.Setup(this, false);
//
// var textMatrix = font.nativeFont.Matrix;
//
// textMatrix.Scale(1,-1);
// context.TextMatrix = textMatrix;
//
// context.ShowTextAtPoint(layoutRectangle.X,
// layoutRectangle.Y + font.nativeFont.CapHeightMetric, s);
//
//
// First we call the brush with a fill of false so the brush can setup the stroke color
// that the text will be using.
// For LinearGradientBrush this will setup a TransparentLayer so the gradient can
// be filled at the end. See comments.
brush.Setup(this, false); // Stroke
// I think we only Fill the text with no Stroke surrounding
context.SetTextDrawingMode(CGTextDrawingMode.Fill);
var attributedString = buildAttributedString(s, font, format, lastBrushColor);
// Work out the geometry
RectangleF insetBounds = layoutRectangle;
if (insetBounds.Size == SizeF.Empty)
{
insetBounds.Width = boundingBox.Width;
insetBounds.Height = boundingBox.Height;
layoutAvailable = false;
}
PointF textPosition = new PointF(insetBounds.X,
insetBounds.Y);
float boundsWidth = insetBounds.Width;
// Calculate the lines
int start = 0;
int length = attributedString.Length;
float baselineOffset = 0;
var typesetter = new CTTypesetter(attributedString);
// First we need to calculate the offset for Vertical Alignment if we
// are using anything but Top
if (layoutAvailable && format.LineAlignment != StringAlignment.Near) {
while (start < length) {
int count = typesetter.SuggestLineBreak (start, boundsWidth);
var line = typesetter.GetLine (new NSRange(start, count));
// Create and initialize some values from the bounds.
float ascent;
float descent;
float leading;
line.GetTypographicBounds (out ascent, out descent, out leading);
baselineOffset += (float)Math.Ceiling (ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose ();
start += count;
}
//textPosition.Y += baselineOffset;
}
// If we are drawing vertial direction then we need to rotate our context transform by 90 degrees
if ((format.FormatFlags & StringFormatFlags.DirectionVertical) == StringFormatFlags.DirectionVertical)
{
//textMatrix.Rotate (ConversionHelpers.DegreesToRadians (90));
var verticalOffset = 0.0f;
while (start < length) {
int count = typesetter.SuggestLineBreak (start, boundsWidth);
var line = typesetter.GetLine (new NSRange(start, count));
// Create and initialize some values from the bounds.
float ascent;
float descent;
float leading;
line.GetTypographicBounds (out ascent, out descent, out leading);
verticalOffset += (float)Math.Ceiling (ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose ();
start += count;
}
context.TranslateCTM (layoutRectangle.X, layoutRectangle.Y);
context.RotateCTM (ConversionHelpers.DegreesToRadians (90));
context.TranslateCTM (-layoutRectangle.X, -layoutRectangle.Y);
context.TranslateCTM (0, -verticalOffset);
start = 0;
}
start = 0;
while (start < length && textPosition.Y < insetBounds.Bottom)
{
// Now we ask the typesetter to break off a line for us.
// This also will take into account line feeds embedded in the text.
// Example: "This is text \n with a line feed embedded inside it"
int count = typesetter.SuggestLineBreak(start, boundsWidth);
var line = typesetter.GetLine(new NSRange(start, count));
// Create and initialize some values from the bounds.
float ascent;
float descent;
float leading;
double lineWidth = line.GetTypographicBounds(out ascent, out descent, out leading);
// Calculate the string format if need be
var penFlushness = 0.0f;
if (format != null)
{
if (layoutAvailable)
{
if (format.Alignment == StringAlignment.Far)
penFlushness = (float)line.GetPenOffsetForFlush(1.0f, boundsWidth);
else if (format.Alignment == StringAlignment.Center)
penFlushness = (float)line.GetPenOffsetForFlush(0.5f, boundsWidth);
}
else
{
// We were only passed in a point so we need to format based
// on the point.
if (format.Alignment == StringAlignment.Far)
penFlushness -= (float)lineWidth;
else if (format.Alignment == StringAlignment.Center)
penFlushness -= (float)lineWidth / 2.0f;
}
}
// initialize our Text Matrix or we could get trash in here
var textMatrix = new CGAffineTransform (
1, 0, 0, -1, 0, ascent);
if (format.LineAlignment == StringAlignment.Near)
textMatrix.Translate (penFlushness + textPosition.X, textPosition.Y);
if (format.LineAlignment == StringAlignment.Center)
textMatrix.Translate (penFlushness + textPosition.X, textPosition.Y + ((insetBounds.Height / 2) - (baselineOffset / 2)) );
if (format.LineAlignment == StringAlignment.Far)
textMatrix.Translate(penFlushness + textPosition.X, textPosition.Y + ((insetBounds.Height) - (baselineOffset)));
context.TextMatrix = textMatrix;
// and draw the line
line.Draw(context);
// Move the index beyond the line break.
start += count;
textPosition.Y += (float)Math.Ceiling(ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose();
}
// Now we call the brush with a fill of true so the brush can do the fill if need be
// For LinearGradientBrush this will draw the Gradient and end the TransparentLayer.
// See comments.
brush.Setup(this, true); // Fill
context.TextMatrix = saveMatrix;
context.RestoreState();
}
void FillBrush(Brush brush, FillMode fillMode = FillMode.Alternate)
{
brush.Setup (this, true);
if (fillMode == FillMode.Alternate)
context.EOFillPath ();
else
context.FillPath ();
}
public void DrawString(string s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format = null)
{
if (font == null)
{
throw new ArgumentNullException("font");
}
if (brush == null)
{
throw new ArgumentNullException("brush");
}
if (s == null || s.Length == 0)
{
return;
}
if (format == null)
{
format = StringFormat.GenericDefault;
}
// TODO: Take into consideration units
// Not sure we need the Save and Restore around this yet.
context.SaveState();
// TextMatrix is not part of the Graphics State and Restore
var saveMatrix = context.TextMatrix;
bool layoutAvailable = true;
// context.SelectFont ( font.nativeFont.PostScriptName,
// font.SizeInPoints,
// CGTextEncoding.MacRoman);
//
// context.SetCharacterSpacing(1);
// context.SetTextDrawingMode(CGTextDrawingMode.Fill); // 5
//
// // Setup both the stroke and the fill ?
// brush.Setup(this, true);
// brush.Setup(this, false);
//
// var textMatrix = font.nativeFont.Matrix;
//
// textMatrix.Scale(1,-1);
// context.TextMatrix = textMatrix;
//
// context.ShowTextAtPoint(layoutRectangle.X,
// layoutRectangle.Y + font.nativeFont.CapHeightMetric, s);
//
//
// First we call the brush with a fill of false so the brush can setup the stroke color
// that the text will be using.
// For LinearGradientBrush this will setup a TransparentLayer so the gradient can
// be filled at the end. See comments.
brush.Setup(this, false); // Stroke
// I think we only Fill the text with no Stroke surrounding
context.SetTextDrawingMode(CGTextDrawingMode.Fill);
var attributedString = buildAttributedString(s, font, format, lastBrushColor);
// Work out the geometry
RectangleF insetBounds = layoutRectangle;
if (insetBounds.Size == SizeF.Empty)
{
insetBounds.Width = boundingBox.Width;
insetBounds.Height = boundingBox.Height;
layoutAvailable = false;
if (format.LineAlignment != StringAlignment.Near)
{
insetBounds.Size = MeasureString(s, font);
}
}
PointF textPosition = new PointF(insetBounds.X,
insetBounds.Y);
float boundsWidth = insetBounds.Width;
// Calculate the lines
int start = 0;
int length = (int)attributedString.Length;
float baselineOffset = 0;
var typesetter = new CTTypesetter(attributedString);
// First we need to calculate the offset for Vertical Alignment if we
// are using anything but Top
if (layoutAvailable && format.LineAlignment != StringAlignment.Near)
{
while (start < length)
{
int count = (int)typesetter.SuggestLineBreak(start, boundsWidth);
var line = typesetter.GetLine(new NSRange(start, count));
// Create and initialize some values from the bounds.
nfloat ascent;
nfloat descent;
nfloat leading;
line.GetTypographicBounds(out ascent, out descent, out leading);
baselineOffset += (float)Math.Ceiling(ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose();
start += count;
}
start = 0;
}
// If we are drawing vertial direction then we need to rotate our context transform by 90 degrees
if ((format.FormatFlags & StringFormatFlags.DirectionVertical) == StringFormatFlags.DirectionVertical)
{
//textMatrix.Rotate (ConversionHelpers.DegreesToRadians (90));
var verticalOffset = 0.0f;
while (start < length)
{
int count = (int)typesetter.SuggestLineBreak(start, boundsWidth);
var line = typesetter.GetLine(new NSRange(start, count));
// Create and initialize some values from the bounds.
nfloat ascent;
nfloat descent;
nfloat leading;
line.GetTypographicBounds(out ascent, out descent, out leading);
verticalOffset += (float)Math.Ceiling(ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose();
start += count;
}
context.TranslateCTM(layoutRectangle.X, layoutRectangle.Y);
context.RotateCTM(ConversionHelpers.DegreesToRadians(90));
context.TranslateCTM(-layoutRectangle.X, -layoutRectangle.Y);
context.TranslateCTM(0, -verticalOffset);
start = 0;
}
start = 0;
while (start < length && textPosition.Y < insetBounds.Bottom)
{
// Now we ask the typesetter to break off a line for us.
// This also will take into account line feeds embedded in the text.
// Example: "This is text \n with a line feed embedded inside it"
int count = (int)typesetter.SuggestLineBreak(start, boundsWidth);
var line = typesetter.GetLine(new NSRange(start, count));
// Create and initialize some values from the bounds.
nfloat ascent;
nfloat descent;
nfloat leading;
double lineWidth = line.GetTypographicBounds(out ascent, out descent, out leading);
// Calculate the string format if need be
var penFlushness = 0.0f;
if (format != null)
{
if (layoutAvailable)
{
if (format.Alignment == StringAlignment.Far)
{
penFlushness = (float)line.GetPenOffsetForFlush(1.0f, boundsWidth);
}
else if (format.Alignment == StringAlignment.Center)
{
penFlushness = (float)line.GetPenOffsetForFlush(0.5f, boundsWidth);
}
}
else
{
// We were only passed in a point so we need to format based
// on the point.
if (format.Alignment == StringAlignment.Far)
{
penFlushness -= (float)lineWidth;
}
else if (format.Alignment == StringAlignment.Center)
{
penFlushness -= (float)lineWidth / 2.0f;
}
}
}
// initialize our Text Matrix or we could get trash in here
var textMatrix = new CGAffineTransform(
1, 0, 0, -1, 0, ascent);
if (format.LineAlignment == StringAlignment.Near)
{
textMatrix.Translate(penFlushness + textPosition.X, textPosition.Y);
}
if (format.LineAlignment == StringAlignment.Center)
{
if (layoutAvailable)
{
textMatrix.Translate(penFlushness + textPosition.X, textPosition.Y + ((insetBounds.Height / 2) - (baselineOffset / 2)));
}
else
{
textMatrix.Translate(penFlushness + textPosition.X, textPosition.Y - ((insetBounds.Height / 2) - (baselineOffset / 2)));
}
}
if (format.LineAlignment == StringAlignment.Far)
{
if (layoutAvailable)
{
textMatrix.Translate(penFlushness + textPosition.X, textPosition.Y + ((insetBounds.Height) - (baselineOffset)));
}
else
{
textMatrix.Translate(penFlushness + textPosition.X, textPosition.Y - ((insetBounds.Height) - (baselineOffset)));
}
}
context.TextMatrix = textMatrix;
// and draw the line
line.Draw(context);
// Move the index beyond the line break.
start += count;
textPosition.Y += (float)Math.Ceiling(ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose();
}
// Now we call the brush with a fill of true so the brush can do the fill if need be
// For LinearGradientBrush this will draw the Gradient and end the TransparentLayer.
// See comments.
brush.Setup(this, true); // Fill
context.TextMatrix = saveMatrix;
context.RestoreState();
}
internal void Setup(Graphics graphics, bool fill)
{
CGContext context = graphics.context;
brush.Setup(graphics, fill);
// TODO: apply matrix
if (graphics.LastPen == this && !changed)
{
return;
}
// A Width of 0 will result in the Pen drawing as if the Width were 1.
width = width == 0 ? 1 : width;
//width = graphics.GraphicsUnitConvertFloat (width);
context.SetLineWidth(width);
switch (startCap)
{
case LineCap.Flat:
context.SetLineCap(width > 1f || dashStyle != DashStyle.Solid ? CGLineCap.Butt : CGLineCap.Square);
break;
case LineCap.Square:
context.SetLineCap(CGLineCap.Square);
break;
case LineCap.Round:
context.SetLineCap(CGLineCap.Round);
break;
// case LineCap.Triangle:
// case LineCap.NoAnchor:
// case LineCap.SquareAnchor:
// case LineCap.RoundAnchor:
// case LineCap.DiamondAnchor:
// case LineCap.ArrowAnchor:
// case LineCap.AnchorMask:
// case LineCap.Custom:
default:
context.SetLineCap(CGLineCap.Butt);
break;
}
switch (dashStyle)
{
case DashStyle.Custom:
context.SetLineDash(dashOffset, setupMorseCode(dashPattern));
break;
case DashStyle.Dash:
context.SetLineDash(dashOffset, setupMorseCode(Dash));
break;
case DashStyle.Dot:
context.SetLineDash(dashOffset, setupMorseCode(Dot));
break;
case DashStyle.DashDot:
context.SetLineDash(dashOffset, setupMorseCode(DashDot));
break;
case DashStyle.DashDotDot:
context.SetLineDash(dashOffset, setupMorseCode(DashDotDot));
break;
default:
context.SetLineDash(0, new nfloat[0]);
break;
}
// miter limit
// join
// cap
// dashes
changed = false;
graphics.LastPen = this;
}
public void DrawString(string s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format = null)
{
if (font == null)
{
throw new ArgumentNullException("font");
}
if (brush == null)
{
throw new ArgumentNullException("brush");
}
if (s == null || s.Length == 0)
{
return;
}
// TODO: Take into consideration units
// Not sure we need the Save and Restore around this yet.
context.SaveState();
// TextMatrix is not part of the Graphics State and Restore
var saveMatrix = context.TextMatrix;
bool layoutAvailable = true;
// context.SelectFont ( font.nativeFont.PostScriptName,
// font.SizeInPoints,
// CGTextEncoding.MacRoman);
//
// context.SetCharacterSpacing(1);
// context.SetTextDrawingMode(CGTextDrawingMode.Fill); // 5
//
// // Setup both the stroke and the fill ?
// brush.Setup(this, true);
// brush.Setup(this, false);
//
// var textMatrix = font.nativeFont.Matrix;
//
// textMatrix.Scale(1,-1);
// context.TextMatrix = textMatrix;
//
// context.ShowTextAtPoint(layoutRectangle.X,
// layoutRectangle.Y + font.nativeFont.CapHeightMetric, s);
//
//
// First we call the brush with a fill of false so the brush can setup the stroke color
// that the text will be using.
// For LinearGradientBrush this will setup a TransparentLayer so the gradient can
// be filled at the end. See comments.
brush.Setup(this, false); // Stroke
// I think we only Fill the text with no Stroke surrounding
context.SetTextDrawingMode(CGTextDrawingMode.Fill);
var attributedString = buildAttributedString(s, font, lastBrushColor);
// Work out the geometry
RectangleF insetBounds = layoutRectangle;
if (insetBounds.Size == SizeF.Empty)
{
insetBounds.Width = boundingBox.Width;
insetBounds.Height = boundingBox.Height;
layoutAvailable = false;
}
PointF textPosition = new PointF(insetBounds.X,
insetBounds.Y);
float boundsWidth = insetBounds.Width;
// Calculate the lines
int start = 0;
int length = attributedString.Length;
var typesetter = new CTTypesetter(attributedString);
while (start < length && textPosition.Y < insetBounds.Bottom)
{
// Now we ask the typesetter to break off a line for us.
// This also will take into account line feeds embedded in the text.
// Example: "This is text \n with a line feed embedded inside it"
int count = typesetter.SuggestLineBreak(start, boundsWidth);
var line = typesetter.GetLine(new NSRange(start, count));
// Create and initialize some values from the bounds.
float ascent;
float descent;
float leading;
double lineWidth = line.GetTypographicBounds(out ascent, out descent, out leading);
// Calculate the string format if need be
var penFlushness = 0.0f;
if (format != null)
{
if (layoutAvailable)
{
if (format.Alignment == StringAlignment.Far)
{
penFlushness = (float)line.GetPenOffsetForFlush(1.0f, boundsWidth);
}
else if (format.Alignment == StringAlignment.Center)
{
penFlushness = (float)line.GetPenOffsetForFlush(0.5f, boundsWidth);
}
}
else
{
// We were only passed in a point so we need to format based
// on the point.
if (format.Alignment == StringAlignment.Far)
{
penFlushness -= (float)lineWidth;
}
else if (format.Alignment == StringAlignment.Center)
{
penFlushness -= (float)lineWidth / 2.0f;
}
}
}
// initialize our Text Matrix or we could get trash in here
var textMatrix = CGAffineTransform.MakeIdentity();
// flip us over or things just do not look good
textMatrix.Scale(1, -1);
context.TextMatrix = textMatrix;
// move us to our graphics baseline
var textViewPos = textPosition;
textViewPos.Y += (float)Math.Floor(ascent - 1);
// take into account our justification
textViewPos.X += penFlushness;
// setup our text position
context.TextPosition = textViewPos;
// and draw the line
line.Draw(context);
// Move the index beyond the line break.
start += count;
textPosition.Y += (float)Math.Ceiling(ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose();
}
// Now we call the brush with a fill of true so the brush can do the fill if need be
// For LinearGradientBrush this will draw the Gradient and end the TransparentLayer.
// See comments.
brush.Setup(this, true); // Fill
context.TextMatrix = saveMatrix;
context.RestoreState();
}
