public PaintContext createContext(
ColorModel cm,
Rectangle deviceBounds,
Rectangle2D userBounds,
AffineTransform xform,
RenderingHints hints) {
Point2D transformedPoint = xform.transform(point, null);
Point2D transformedRadius = xform.deltaTransform(mRadius, null);
return new RoundGradientContext(
transformedPoint, mPointColor, transformedRadius, mBackgroundColor);
}
/**
* Method to get the coordinates of the enclosing rectangle after this transformation is applied
* to the current picture
*
* @return the enclosing rectangle
*/
public Rectangle2D getTransformEnclosingRect(AffineTransform trans) {
int width = getWidth();
int height = getHeight();
double maxX = width - 1;
double maxY = height - 1;
double minX, minY;
Point2D.Double p1 = new Point2D.Double(0, 0);
Point2D.Double p2 = new Point2D.Double(maxX, 0);
Point2D.Double p3 = new Point2D.Double(maxX, maxY);
Point2D.Double p4 = new Point2D.Double(0, maxY);
Point2D.Double result = new Point2D.Double(0, 0);
Rectangle2D.Double rect = null;
// get the new points and min x and y and max x and y
trans.deltaTransform(p1, result);
minX = result.getX();
maxX = result.getX();
minY = result.getY();
maxY = result.getY();
trans.deltaTransform(p2, result);
minX = Math.min(minX, result.getX());
maxX = Math.max(maxX, result.getX());
minY = Math.min(minY, result.getY());
maxY = Math.max(maxY, result.getY());
trans.deltaTransform(p3, result);
minX = Math.min(minX, result.getX());
maxX = Math.max(maxX, result.getX());
minY = Math.min(minY, result.getY());
maxY = Math.max(maxY, result.getY());
trans.deltaTransform(p4, result);
minX = Math.min(minX, result.getX());
maxX = Math.max(maxX, result.getX());
minY = Math.min(minY, result.getY());
maxY = Math.max(maxY, result.getY());
// create the bounding rectangle to return
rect = new Rectangle2D.Double(minX, minY, maxX - minX + 1, maxY - minY + 1);
return rect;
}
@Override
protected void basicTextShowGlyphs(PDGlyphs glyphs, float advance) {
AffineTransform tx;
tx = (AffineTransform) getDeviceTransform().clone();
tx.concatenate(textState.globalTransform);
lastStartX = tx.getTranslateX();
lastStartY = tx.getTranslateY();
// get the transformed character bounding box
double glyphAscent = glyphs.getAscent();
double glyphDescent = glyphs.getDescent();
double ascent = (textState.fontSize * glyphAscent) / THOUSAND;
double descent = (textState.fontSize * glyphDescent) / THOUSAND;
if (descent > 0) {
descent = -descent;
}
double[] pts = {0, descent, advance, ascent};
tx.deltaTransform(pts, 0, pts, 0, 2);
//
float x = (float) lastStartX;
float y = (float) (lastStartY + pts[1]);
float width = (float) pts[2];
float height = (float) (pts[3] - pts[1]);
if (width < 0) {
x += width;
width = -width;
}
if (height < 0) {
y += height;
height = -height;
}
Rectangle2D charRect = new Rectangle2D.Float(x, y, width, height);
if (getBounds() == null || getBounds().intersects(charRect)) {
onCharacterFound(glyphs, charRect);
}
// advance text matrix and store position for reference
super.basicTextShowGlyphs(glyphs, advance);
tx = (AffineTransform) getDeviceTransform().clone();
tx.concatenate(textState.globalTransform);
lastStopX = tx.getTranslateX();
lastStopY = tx.getTranslateY();
}
