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97 lines
3.6 KiB
Java
97 lines
3.6 KiB
Java
/*
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* Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.java2d.pipe;
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import java.awt.Rectangle;
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import java.awt.Shape;
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import sun.java2d.SunGraphics2D;
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import sun.font.GlyphList;
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/*
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* This class uses the alpha graybits arrays from a GlyphList object to
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* drive a CompositePipe in much the same way as the antialiasing renderer.
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*/
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public class TextRenderer extends GlyphListPipe {
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CompositePipe outpipe;
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public TextRenderer(CompositePipe pipe) {
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outpipe = pipe;
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}
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protected void drawGlyphList(SunGraphics2D sg2d, GlyphList gl) {
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int num = gl.getNumGlyphs();
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Region clipRegion = sg2d.getCompClip();
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int cx1 = clipRegion.getLoX();
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int cy1 = clipRegion.getLoY();
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int cx2 = clipRegion.getHiX();
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int cy2 = clipRegion.getHiY();
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Object ctx = null;
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try {
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gl.startGlyphIteration();
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int[] bounds = gl.getBounds(num);
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Rectangle r = new Rectangle(bounds[0], bounds[1],
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bounds[2] - bounds[0],
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bounds[3] - bounds[1]);
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Shape s = sg2d.untransformShape(r);
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ctx = outpipe.startSequence(sg2d, s, r, bounds);
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for (int i = 0; i < num; i++) {
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gl.setGlyphIndex(i);
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int[] metrics = gl.getMetrics();
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int gx1 = metrics[0];
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int gy1 = metrics[1];
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int w = metrics[2];
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int gx2 = gx1 + w;
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int gy2 = gy1 + metrics[3];
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int off = 0;
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if (gx1 < cx1) {
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off = cx1 - gx1;
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gx1 = cx1;
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}
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if (gy1 < cy1) {
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off += (cy1 - gy1) * w;
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gy1 = cy1;
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}
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if (gx2 > cx2) gx2 = cx2;
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if (gy2 > cy2) gy2 = cy2;
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if (gx2 > gx1 && gy2 > gy1 && !gl.isColorGlyph(i) &&
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outpipe.needTile(ctx, gx1, gy1, gx2 - gx1, gy2 - gy1))
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{
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byte[] alpha = gl.getGrayBits();
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outpipe.renderPathTile(ctx, alpha, off, w,
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gx1, gy1, gx2 - gx1, gy2 - gy1);
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} else {
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outpipe.skipTile(ctx, gx1, gy1);
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}
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}
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} finally {
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if (ctx != null) {
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outpipe.endSequence(ctx);
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}
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}
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}
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}
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