/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package sun.java2d.pipe;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.Font;
import java.awt.font.GlyphVector;
import sun.java2d.SunGraphics2D;
import sun.java2d.loops.FontInfo;
import sun.font.GlyphList;
/*
* This class uses the alpha graybits arrays from a GlyphList object to
* drive a CompositePipe in much the same way as the antialiasing renderer.
*/
public class TextRenderer extends GlyphListPipe {
CompositePipe outpipe;
public TextRenderer(CompositePipe pipe) {
outpipe = pipe;
}
protected void drawGlyphList(SunGraphics2D sg2d, GlyphList gl) {
int num = gl.getNumGlyphs();
Region clipRegion = sg2d.getCompClip();
int cx1 = clipRegion.getLoX();
int cy1 = clipRegion.getLoY();
int cx2 = clipRegion.getHiX();
int cy2 = clipRegion.getHiY();
Object ctx = null;
try {
int[] bounds = gl.getBounds();
Rectangle r = new Rectangle(bounds[0], bounds[1],
bounds[2] - bounds[0],
bounds[3] - bounds[1]);
Shape s = sg2d.untransformShape(r);
ctx = outpipe.startSequence(sg2d, s, r, bounds);
for (int i = 0; i < num; i++) {
gl.setGlyphIndex(i);
int metrics[] = gl.getMetrics();
int gx1 = metrics[0];
int gy1 = metrics[1];
int w = metrics[2];
int gx2 = gx1 + w;
int gy2 = gy1 + metrics[3];
int off = 0;
if (gx1 < cx1) {
off = cx1 - gx1;
gx1 = cx1;
}
if (gy1 < cy1) {
off += (cy1 - gy1) * w;
gy1 = cy1;
}
if (gx2 > cx2) gx2 = cx2;
if (gy2 > cy2) gy2 = cy2;
if (gx2 > gx1 && gy2 > gy1 &&
outpipe.needTile(ctx, gx1, gy1, gx2 - gx1, gy2 - gy1))
{
byte alpha[] = gl.getGrayBits();
outpipe.renderPathTile(ctx, alpha, off, w,
gx1, gy1, gx2 - gx1, gy2 - gy1);
} else {
outpipe.skipTile(ctx, gx1, gy1);
}
}
} finally {
if (ctx != null) {
outpipe.endSequence(ctx);
}
}
}
}