我有一种绘制图像的方法，其中文本包含在该图像中。现在，文本包含exo的表情符号，并且它不会像在图像中那样被打印，而是像这样[]的矩形框。 我用过java.text。和java.awt。这个课程
private void drawMessageString(Graphics2D g, final int messageHeight) {
int x = CRUSH_PADDING + CRUSH_MESSAGE_LR_PADDING;
int y = CRUSH_PADDING + TOP_BAR_HEIGHT + CRUSH_MESSAGE_TB_PADDING;
String myString="he new guy from New Zealand who is playing tennis ";
try {
byte ptext[] = myString.getBytes("UTF-8");
String value;
value = new String(ptext, "UTF-8");
TextRenderer.drawString(g, value, FontUtils.getInstance().getFont(FONT_PROXIMA_NOVA, 24.0f), MSG_COLOR, new Rectangle(x, y, CRUSH_MESSAGE_WIDTH, messageHeight), TextAlignment.TOP, TextFormat.FIRST_LINE_VISIBLE);
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
TextRenderer只是一个创建的类，它将代码包含在drawString和rectangle中。
应该解决这个问题？
TextRenderer.java ==＆gt;
package com.text;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.font.FontRenderContext;
import java.awt.font.LineBreakMeasurer;
import java.awt.font.TextAttribute;
import java.awt.font.TextLayout;
import java.awt.geom.Rectangle2D;
import java.text.AttributedCharacterIterator;
import java.text.AttributedString;
/**
* A class which provides static methods for rendering text using alignment.
*
* @author Chris Copeland
* @version 1.0
*/
public final class TextRenderer {
/**
* Initialize a new instance of the {@link TextRenderer} class.
*/
private TextRenderer() {
}
/**
* Draws a string onto a <code>Graphics</code> handle, using a
* <code>Font</code>, <code>Color</code> and target bounds to calculate the
* location and automatic wrapping of text. The <i>align</i> property
* determines where the text will be positioned.
*
* @param g A <code>Graphics</code> handle which is the target of the draw
* operation
* @param text A <code>String</code> containing the text to draw
* @param font The <code>Font</code> to use when drawing the text
* @param color The <code>Color</code> to use when drawing the text
* @param bounds A <code>Rectangle</code> representing the bounds of the
* text
* @return A <code>Rectangle</code> representing the bounds consumed by the
* text
*/
public static Rectangle drawString(Graphics g, String text, Font font, Color color, Rectangle bounds) {
return drawString(g, text, font, color, bounds, TextAlignment.TOP_LEFT, TextFormat.NONE);
}
/**
* Draws a string onto a <code>Graphics</code> handle, using a
* <code>Font</code>, <code>Color</code> and target bounds to calculate the
* location and automatic wrapping of text. The <i>align</i> property
* determines where the text will be positioned.
*
* @param g A <code>Graphics</code> handle which is the target of the draw
* operation
* @param text A <code>String</code> containing the text to draw
* @param font The <code>Font</code> to use when drawing the text
* @param color The <code>Color</code> to use when drawing the text
* @param bounds A <code>Rectangle</code> representing the bounds of the
* text
* @param align A <code>TextAlignment</code> value representing the location
* to draw the text, relative to the <i>bounds</i>
* @return A <code>Rectangle</code> representing the bounds consumed by the
* text
*/
public static Rectangle drawString(Graphics g, String text, Font font, Color color, Rectangle bounds, TextAlignment align) {
return drawString(g, text, font, color, bounds, align, TextFormat.NONE);
}
/**
* Draws a string onto a <code>Graphics</code> handle, using a
* <code>Font</code>, <code>Color</code> and target bounds to calculate the
* location and automatic wrapping of text. The <i>align</i> property
* determines where the text will be positioned.
*
* @param g A <code>Graphics</code> handle which is the target of the draw
* operation
* @param text A <code>String</code> containing the text to draw
* @param font The <code>Font</code> to use when drawing the text
* @param color The <code>Color</code> to use when drawing the text
* @param bounds A <code>Rectangle</code> representing the bounds of the
* text
* @param align A <code>TextAlignment</code> value representing the location
* to draw the text, relative to the <i>bounds</i>
* @param format Additional formatting flags to use when drawing (see
* <code>TextFormat</code> class)
* @return A <code>Rectangle</code> representing the bounds consumed by the
* text
*/
public static Rectangle drawString(Graphics g, String text, Font font, Color color, Rectangle bounds, TextAlignment align, int format) {
if (g == null) {
throw new NullPointerException("The graphics handle cannot be null.");
}
if (text == null) {
throw new NullPointerException("The text cannot be null.");
}
if (font == null) {
throw new NullPointerException("The font cannot be null.");
}
if (color == null) {
throw new NullPointerException("The text color cannot be null.");
}
if (bounds == null) {
throw new NullPointerException("The text bounds cannot be null.");
}
if (align == null) {
throw new NullPointerException("The text alignment cannot be null.");
}
if (text.length() == 0) {
return new Rectangle(bounds.x, bounds.y, 0, 0);
}
Graphics2D g2D = (Graphics2D) g;
AttributedString attributedString = new AttributedString(text);
attributedString.addAttribute(TextAttribute.FOREGROUND, color);
attributedString.addAttribute(TextAttribute.FONT, font);
AttributedCharacterIterator attributedCharIterator = attributedString.getIterator();
FontRenderContext fontContext = new FontRenderContext(null, !TextFormat.isEnabled(format, TextFormat.NO_ANTI_ALIASING), false);
LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(attributedCharIterator, fontContext);
Point targetLocation = new Point(bounds.x, bounds.y);
int nextOffset = 0;
if (align.isMiddle() || align.isBottom()) {
if (align.isMiddle()) {
targetLocation.y = bounds.y + (bounds.height / 2);
}
if (align.isBottom()) {
targetLocation.y = bounds.y + bounds.height;
}
while (lineMeasurer.getPosition() < text.length()) {
nextOffset = lineMeasurer.nextOffset(bounds.width);
nextOffset = nextTextIndex(nextOffset, lineMeasurer.getPosition(), text);
TextLayout textLayout = lineMeasurer.nextLayout(bounds.width, nextOffset, false);
if (align.isMiddle()) {
targetLocation.y -= (textLayout.getAscent() + textLayout.getLeading() + textLayout.getDescent()) / 2;
}
if (align.isBottom()) {
targetLocation.y -= (textLayout.getAscent() + textLayout.getLeading() + textLayout.getDescent());
}
}
if (TextFormat.isEnabled(format, TextFormat.FIRST_LINE_VISIBLE)) {
targetLocation.y = Math.max(0, targetLocation.y);
}
lineMeasurer.setPosition(0);
}
if (align.isRight() || align.isCenter()) {
targetLocation.x = bounds.x + bounds.width;
}
Rectangle consumedBounds = new Rectangle(targetLocation.x, targetLocation.y, 0, 0);
while (lineMeasurer.getPosition() < text.length()) {
nextOffset = lineMeasurer.nextOffset(bounds.width);
nextOffset = nextTextIndex(nextOffset, lineMeasurer.getPosition(), text);
TextLayout textLayout = lineMeasurer.nextLayout(bounds.width, nextOffset, false);
Rectangle2D textBounds = textLayout.getBounds();
targetLocation.y += textLayout.getAscent();
consumedBounds.width = Math.max(consumedBounds.width, (int) textBounds.getWidth());
switch (align) {
case TOP_LEFT:
case MIDDLE_LEFT:
case BOTTOM_LEFT:
textLayout.draw(g2D, targetLocation.x, targetLocation.y);
break;
case TOP:
case MIDDLE:
case BOTTOM:
targetLocation.x = bounds.x + (bounds.width / 2) - (int) (textBounds.getWidth() / 2);
consumedBounds.x = Math.min(consumedBounds.x, targetLocation.x);
textLayout.draw(g2D, targetLocation.x, targetLocation.y);
break;
case TOP_RIGHT:
case MIDDLE_RIGHT:
case BOTTOM_RIGHT:
targetLocation.x = bounds.x + bounds.width - (int) textBounds.getWidth();
textLayout.draw(g2D, targetLocation.x, targetLocation.y);
consumedBounds.x = Math.min(consumedBounds.x, targetLocation.x);
break;
}
targetLocation.y += textLayout.getLeading() + textLayout.getDescent();
}
consumedBounds.height = targetLocation.y - consumedBounds.y;
return consumedBounds;
}
/**
* Calculates the next maximum index of the string that will be displayed.
*
* @param nextOffset The index calculated using a
* <code>LineBreakMeasurer</code> <i>nextOffset</i> method
* @param measurerPosition The position within a
* <code>LineBreakMeasurer</code>
* @param text The text being rendered
* @return The next maximum index within the string
*/
private static int nextTextIndex(int nextOffset, int measurerPosition, String text) {
for (int i = measurerPosition + 1; i < nextOffset; ++i) {
if (text.charAt(i) == '\n') {
return i;
}
}
return nextOffset;
}
}
答案 0 :(得分：0)
我使用的字体是OpenSansEmoji.ttf，它是3种字体的组合，现在它对我来说很好用。图像是通过文本和相应的表情符号生成的。
private void drawMessageString(Graphics2D g, final int messageHeight) {
int x = CRUSH_PADDING + CRUSH_MESSAGE_LR_PADDING;
int y = CRUSH_PADDING + TOP_BAR_HEIGHT + CRUSH_MESSAGE_TB_PADDING;
String myString="he new guy from New Zealand who is playing tennis ";
try {
byte ptext[] = myString.getBytes("UTF-8");
String value;
value = new String(ptext, "UTF-8");
TextRenderer.drawString(g, value, FontUtils.getInstance().getFont(FONT_OPEN_EMOJIFONT, 24.0f), MSG_COLOR, new Rectangle(x, y, CRUSH_MESSAGE_WIDTH, messageHeight), TextAlignment.TOP, TextFormat.FIRST_LINE_VISIBLE);
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}