org.jfree.text.TextFragment Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jtstand-common Show documentation
Show all versions of jtstand-common Show documentation
jtstand-common is a library derived from jcommon, used by jtstand-chart, which is derived from jfreechart
/*
* Copyright (c) 2009 Albert Kurucz.
*
* This file, TextFragment.java is part of JTStand.
*
* JTStand is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JTStand is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GTStand. If not, see null not permitted).
*/
public TextFragment(final String text) {
this(text, DEFAULT_FONT, DEFAULT_PAINT);
}
/**
* Creates a new text fragment.
*
* @param text the text (null not permitted).
* @param font the font (null not permitted).
*/
public TextFragment(final String text, final Font font) {
this(text, font, DEFAULT_PAINT);
}
/**
* Creates a new text fragment.
*
* @param text the text (null not permitted).
* @param font the font (null not permitted).
* @param paint the text color (null not permitted).
*/
public TextFragment(final String text, final Font font, final Paint paint) {
this(text, font, paint, 0.0f);
}
/**
* Creates a new text fragment.
*
* @param text the text (null not permitted).
* @param font the font (null not permitted).
* @param paint the text color (null not permitted).
* @param baselineOffset the baseline offset.
*/
public TextFragment(final String text, final Font font, final Paint paint,
final float baselineOffset) {
if (text == null) {
throw new IllegalArgumentException("Null 'text' argument.");
}
if (font == null) {
throw new IllegalArgumentException("Null 'font' argument.");
}
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
this.text = text;
this.font = font;
this.paint = paint;
this.baselineOffset = baselineOffset;
}
/**
* Returns the text.
*
* @return The text (possibly null).
*/
public String getText() {
return this.text;
}
/**
* Returns the font.
*
* @return The font (never null).
*/
public Font getFont() {
return this.font;
}
/**
* Returns the text paint.
*
* @return The text paint (never null).
*/
public Paint getPaint() {
return this.paint;
}
/**
* Returns the baseline offset.
*
* @return The baseline offset.
*/
public float getBaselineOffset() {
return this.baselineOffset;
}
/**
* Draws the text fragment.
*
* @param g2 the graphics device.
* @param anchorX the x-coordinate of the anchor point.
* @param anchorY the y-coordinate of the anchor point.
* @param anchor the location of the text that is aligned to the anchor
* point.
* @param rotateX the x-coordinate of the rotation point.
* @param rotateY the y-coordinate of the rotation point.
* @param angle the angle.
*/
public void draw(final Graphics2D g2, final float anchorX,
final float anchorY, final TextAnchor anchor,
final float rotateX, final float rotateY,
final double angle) {
g2.setFont(this.font);
g2.setPaint(this.paint);
TextUtilities.drawRotatedString(this.text, g2, anchorX, anchorY
+ this.baselineOffset, anchor, angle, rotateX, rotateY);
}
/**
* Calculates the dimensions of the text fragment.
*
* @param g2 the graphics device.
*
* @return The width and height of the text.
*/
public Size2D calculateDimensions(final Graphics2D g2) {
final FontMetrics fm = g2.getFontMetrics(this.font);
final Rectangle2D bounds = TextUtilities.getTextBounds(this.text, g2,
fm);
final Size2D result = new Size2D(bounds.getWidth(), bounds.getHeight());
return result;
}
/**
* Calculates the vertical offset between the baseline and the specified
* text anchor.
*
* @param g2 the graphics device.
* @param anchor the anchor.
*
* @return the offset.
*/
public float calculateBaselineOffset(final Graphics2D g2,
final TextAnchor anchor) {
float result = 0.0f;
final FontMetrics fm = g2.getFontMetrics(this.font);
final LineMetrics lm = fm.getLineMetrics("ABCxyz", g2);
if (anchor == TextAnchor.TOP_LEFT || anchor == TextAnchor.TOP_CENTER
|| anchor == TextAnchor.TOP_RIGHT) {
result = lm.getAscent();
}
else if (anchor == TextAnchor.BOTTOM_LEFT
|| anchor == TextAnchor.BOTTOM_CENTER
|| anchor == TextAnchor.BOTTOM_RIGHT) {
result = -lm.getDescent() - lm.getLeading();
}
return result;
}
/**
* Tests this instance for equality with an arbitrary object.
*
* @param obj the object to test against (null permitted).
*
* @return A boolean.
*/
public boolean equals(final Object obj) {
if (obj == null) {
return false;
}
if (obj == this) {
return true;
}
if (obj instanceof TextFragment) {
final TextFragment tf = (TextFragment) obj;
if (!this.text.equals(tf.text)) {
return false;
}
if (!this.font.equals(tf.font)) {
return false;
}
if (!this.paint.equals(tf.paint)) {
return false;
}
return true;
}
return false;
}
/**
* Returns a hash code for this object.
*
* @return A hash code.
*/
public int hashCode() {
int result;
result = (this.text != null ? this.text.hashCode() : 0);
result = 29 * result + (this.font != null ? this.font.hashCode() : 0);
result = 29 * result + (this.paint != null ? this.paint.hashCode() : 0);
return result;
}
/**
* Provides serialization support.
*
* @param stream the output stream.
*
* @throws IOException if there is an I/O error.
*/
private void writeObject(final ObjectOutputStream stream)
throws IOException {
stream.defaultWriteObject();
SerialUtilities.writePaint(this.paint, stream);
}
/**
* Provides serialization support.
*
* @param stream the input stream.
*
* @throws IOException if there is an I/O error.
* @throws ClassNotFoundException if there is a classpath problem.
*/
private void readObject(final ObjectInputStream stream)
throws IOException, ClassNotFoundException {
stream.defaultReadObject();
this.paint = SerialUtilities.readPaint(stream);
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy