public Region [] MeasureCharacterRanges (string text, Font font, RectangleF layoutRect, StringFormat stringFormat) {
if (stringFormat == null)
throw new ArgumentException("stringFormat");
CharacterRange[] ranges = stringFormat.CharRanges;
if (ranges == null || ranges.Length == 0)
return new Region[0];
GraphicsPath[] pathes = new GraphicsPath[ranges.Length];
for (int i = 0; i < pathes.Length; i++)
pathes[i] = new GraphicsPath();
TextLineIterator iter = new TextLineIterator(text, font, NativeObject.getFontRenderContext(),
stringFormat, layoutRect.Width, layoutRect.Height);
for (LineLayout layout = iter.NextLine(); layout != null; layout = iter.NextLine()) {
for (int i = 0; i < ranges.Length; i++) {
int start = ranges[i].First;
int length = ranges[i].Length;
start -= iter.CharsConsumed;
int limit = start + length;
int layoutStart = iter.CurrentPosition - layout.CharacterCount;
if (start < iter.CurrentPosition && limit > layoutStart) {
float layoutOffset;
if (start > layoutStart)
layoutOffset = iter.GetAdvanceBetween(layoutStart, start);
else {
layoutOffset = 0;
start = layoutStart;
}
float width = (limit < iter.CurrentPosition) ?
iter.GetAdvanceBetween(start, limit) :
layout.Width - layoutOffset;
float height = layout.Ascent + layout.Descent;
float x = layout.NativeX;
float y = layout.NativeY;
if (stringFormat.IsVertical) {
y += layoutOffset;
x -= layout.Descent;
}
else {
x += layoutOffset;
y -= layout.Ascent;
}
if (layout.AccumulatedHeight + height > iter.WrapHeight) {
float diff = iter.WrapHeight - layout.AccumulatedHeight;
if (stringFormat.IsVertical && stringFormat.IsRightToLeft) {
x += diff;
height -= diff;
}
else
height = diff;
}
if (stringFormat.IsVertical)
pathes[i].AddRectangle(x + layoutRect.X, y + layoutRect.Y, height, width);
else
pathes[i].AddRectangle(x + layoutRect.X, y + layoutRect.Y, width, height);
}
}
}
geom.AffineTransform lineAlignT = iter.CalcLineAlignmentTransform();
if (lineAlignT != null) {
for (int i = 0; i < pathes.Length; i++)
pathes[i].NativeObject.transform(lineAlignT);
}
Region[] regions = new Region[ranges.Length];
for (int i = 0; i < regions.Length; i++)
regions[i] = new Region(pathes[i]);
return regions;
}
void AddString (string s, Font font,
float x, float y, float width, float height,
StringFormat format) {
TextLineIterator iter = new TextLineIterator(s, font,
new java.awt.font.FontRenderContext(null, false, false),
format, width, height);
int coordsCount = NativeObject.CoordsCount;
for (LineLayout layout = iter.NextLine(); layout != null; layout = iter.NextLine()) {
NativeObject.append(layout.GetOutline(x, y), false);
}
AffineTransform lineAlignT = iter.CalcLineAlignmentTransform();
if (lineAlignT != null)
NativeObject.transform(lineAlignT, coordsCount, NativeObject.CoordsCount - coordsCount);
}
