/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Ilya S. Okomin
* @version $Revision$
*/
package org.apache.harmony.awt.gl.render;
import java.awt.*;
import java.awt.image.*;
import java.awt.font.GlyphMetrics;
import java.awt.font.GlyphVector;
import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import org.apache.harmony.awt.gl.TextRenderer;
import org.apache.harmony.awt.gl.font.CommonGlyphVector;
import org.apache.harmony.awt.gl.font.FontPeerImpl;
import org.apache.harmony.awt.gl.font.Glyph;
import org.apache.harmony.awt.gl.image.BufferedImageGraphics2D;
public class JavaTextRenderer extends TextRenderer {
public static final JavaTextRenderer inst = new JavaTextRenderer();
@Override
public void drawGlyphVector(Graphics2D g, GlyphVector glyphVector,
float x, float y) {
AffineTransform at = g.getTransform();
Rectangle c = g.getClipBounds();
if (at != null){
int atType = at.getType();
if (atType == AffineTransform.TYPE_TRANSLATION) {
c.translate((int)Math.round(at.getTranslateX()), (int)Math.round(at.getTranslateY()));
}
}
WritableRaster wr = ((BufferedImageGraphics2D)g).getWritableRaster();
ColorModel cm = ((BufferedImageGraphics2D)g).getColorModel();
Rectangle rBounds = wr.getBounds();
Object color = cm.getDataElements(g.getColor().getRGB(), null);
drawClipGlyphVector(wr, color, glyphVector, (int)Math.round(x + at.getTranslateX()), (int)Math.round(y + at.getTranslateY()),
Math.max(c.x,rBounds.x),
Math.max(c.y,rBounds.y),
Math.min((int)Math.round(c.getMaxX()), (int)Math.round(rBounds.getMaxX())),
Math.min((int)Math.round(c.getMaxY()), (int)Math.round(rBounds.getMaxY())));
}
@SuppressWarnings("deprecation")
@Override
public void drawString(Graphics2D g, String str, float x, float y) {
AffineTransform at = g.getTransform();
Rectangle c = g.getClipBounds();
if (at != null){
int atType = at.getType();
if (atType == AffineTransform.TYPE_TRANSLATION) {
c.translate((int)Math.round(at.getTranslateX()), (int)Math.round(at.getTranslateY()));
}
}
WritableRaster wr = ((BufferedImageGraphics2D)g).getWritableRaster();
ColorModel cm = ((BufferedImageGraphics2D)g).getColorModel();
Rectangle rBounds = wr.getBounds();
Object color = cm.getDataElements(g.getColor().getRGB(), null);
drawClipString(wr, color, str, (FontPeerImpl) (g.getFont().getPeer()),
(int)Math.round(x + at.getTranslateX()), (int)Math.round(y + at.getTranslateY()),
Math.max(c.x,rBounds.x),
Math.max(c.y,rBounds.y),
Math.min((int)Math.round(c.getMaxX()), (int)Math.round(rBounds.getMaxX())),
Math.min((int)Math.round(c.getMaxY()), (int)Math.round(rBounds.getMaxY())));
}
/**
*
* Draws string on specified raster at desired position.
*
* @param raster specified WritableRaster to draw at
* @param color color of the text
* @param glyphVector GlyphVector object to draw
* @param x start X position to draw
* @param y start Y position to draw
* @param cMinX minimum x of the raster area to draw
* @param cMinY minimum y of the raster area to draw
* @param cMaxX maximum x of the raster area to draw
* @param cMaxY maximum y of the raster area to draw
*/
public void drawClipGlyphVector(WritableRaster raster, Object color,
GlyphVector glyphVector, int x, int y,
int cMinX, int cMinY, int cMaxX, int cMaxY) {
// TODO: implement complex clipping
int xSrcSurf, ySrcSurf; // Start point in String rectangle
int xDstSurf, yDstSurf; // Start point in Surface rectangle
int clWidth, clHeight;
for (int i = 0; i < glyphVector.getNumGlyphs(); i++) {
Glyph gl = ((CommonGlyphVector) glyphVector).vector[i];
if (gl.getPointWidth() == 0) {
continue;
}
byte[] data = gl.getBitmap();
if (data != null) {
Point2D pos = glyphVector.getGlyphPosition(i);
xSrcSurf = 0;//gl.bmp_left;
ySrcSurf = 0;//gl.bmp_rows - gl.bmp_top;
xDstSurf = x + (int)pos.getX() + (int) gl.getGlyphPointMetrics().getLSB();// + gl.bmp_left;
yDstSurf = y - gl.bmp_top/*getPointHeight()*/ + (int) pos.getY();// - (gl.bmp_rows-gl.bmp_top);
int textWidth = gl.bmp_width;
int textHeight = gl.getPointHeight();
// if Regions don't intersect
if ((xDstSurf > cMaxX) || (yDstSurf > cMaxY) || (xDstSurf + textWidth < cMinX)
|| (yDstSurf + textHeight < cMinY)) {
// Nothing to do
} else {
if (xDstSurf >= cMinX) {
clWidth = Math.min(textWidth, cMaxX - xDstSurf);
} else {
xSrcSurf += cMinX - xDstSurf;
clWidth = Math.min(cMaxX - cMinX, textWidth - (cMinX - xDstSurf));
xDstSurf = cMinX;
}
if (yDstSurf >= cMinY) {
clHeight = Math.min(textHeight, cMaxY - yDstSurf);
} else {
ySrcSurf += cMinY - yDstSurf;
clHeight = Math.min(cMaxY - cMinY, textHeight - (cMinY - yDstSurf));
yDstSurf = cMinY;
}
// Drawing on the Raster
for (int h=0; h<clHeight; h++){
for (int w=0; w < clWidth ; w++) {
byte currByte = data[(ySrcSurf + h)*gl.bmp_pitch + (xSrcSurf+w)/8];
boolean emptyByte = ((currByte & (1 << (7 - ((xSrcSurf+w) % 8)))) != 0);
if (emptyByte) {
raster.setDataElements(xDstSurf+w, yDstSurf+h, color);
} else {
// Nothing to do
}
}
}
}
}
}
}
/**
* Draws string on specified raster at desired position.
*
* @param raster specified WritableRaster to draw at
* @param color color of the text
* @param str text to draw
* @param font font peer to use for drawing text
* @param x start X position to draw
* @param y start Y position to draw
* @param cMinX minimum x of the raster area to draw
* @param cMinY minimum y of the raster area to draw
* @param cMaxX maximum x of the raster area to draw
* @param cMaxY maximum y of the raster area to draw
*/
public void drawClipString(WritableRaster raster, Object color, String str,
FontPeerImpl font, int x, int y, int cMinX, int cMinY, int cMaxX,
int cMaxY) {
// TODO: implement complex clipping
int xSrcSurf, ySrcSurf; // Start point in String rectangle
int xDstSurf, yDstSurf; // Start point in Surface rectangle
int clWidth, clHeight;
char[] chars = str.toCharArray();
int xBaseLine = x;
int yBaseLine = y;
for (char element : chars) {
Glyph gl = font.getGlyph(element);
GlyphMetrics pointMetrics = gl.getGlyphPointMetrics();
if (gl.getWidth() == 0) {
xBaseLine += pointMetrics.getAdvanceX();
continue;
}
byte[] data = gl.getBitmap();
if (data == null) {
xBaseLine += pointMetrics.getAdvanceX();
} else {
xSrcSurf = 0;
ySrcSurf = 0;
xDstSurf = Math.round(xBaseLine + gl.getGlyphPointMetrics().getLSB());
yDstSurf = yBaseLine - gl.bmp_top;
int textWidth = gl.bmp_width;
int textHeight = gl.getPointHeight();
// if Regions don't intersect
if ((xDstSurf > cMaxX) || (yDstSurf > cMaxY) || (xDstSurf + textWidth < cMinX)
|| (yDstSurf + textHeight < cMinY)) {
// Nothing to do
} else {
if (xDstSurf >= cMinX) {
clWidth = Math.min(textWidth, cMaxX - xDstSurf);
} else {
xSrcSurf += cMinX - xDstSurf;
clWidth = Math.min(cMaxX - cMinX, textWidth - (cMinX - xDstSurf));
xDstSurf = cMinX;
}
if (yDstSurf >= cMinY) {
clHeight = Math.min(textHeight, cMaxY - yDstSurf);
} else {
ySrcSurf += cMinY - yDstSurf;
clHeight = Math.min(cMaxY - cMinY, textHeight - (cMinY - yDstSurf));
yDstSurf = cMinY;
}
// Drawing on the Raster
for (int h=0; h<clHeight; h++){
for (int w=0; w < clWidth ; w++) {
byte currByte = data[(ySrcSurf + h)*gl.bmp_pitch + (xSrcSurf+w)/8];
boolean emptyByte = ((currByte & (1 << (7 - ((xSrcSurf+w) % 8)))) != 0);
if (emptyByte) {
raster.setDataElements(xDstSurf+w, yDstSurf+h, color);
} else {
// Nothing to do
}
}
}
}
xBaseLine += pointMetrics.getAdvanceX();
}
}
}
}