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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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*
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package sun.java2d.pipe;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.awt.font.TextLayout;
import sun.java2d.SunGraphics2D;
import sun.font.GlyphList;
import sun.awt.SunHints;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.font.TextLayout;
/**
* A delegate pipe of SG2D for drawing "large" text with
* a solid source colour to an opaque destination.
* The text is drawn as a filled outline.
* Since the developer is not explicitly requesting this way of
* rendering, this should not be used if the current paint is not
* a solid colour.
*
* If text anti-aliasing is requested by the application, and
* filling path, an anti-aliasing fill pipe needs to
* be invoked.
* This involves making some of the same decisions as in the
* validatePipe call, which may be in a SurfaceData subclass, so
* its awkward to always ensure that the correct pipe is used.
* The easiest thing, rather than reproducing much of that logic
* is to call validatePipe() which works but is expensive, although
* probably not compared to the cost of filling the path.
* Note if AA hint is ON but text-AA hint is OFF this logic will
* produce AA text which perhaps isn't what the user expected.
* Note that the glyphvector obeys its FRC, not the G2D.
*/
public class OutlineTextRenderer implements TextPipe {
// Text with a height greater than the threshhold will be
// drawn via this pipe.
public static final int THRESHHOLD = 100;
public void drawChars(SunGraphics2D g2d,
char data[], int offset, int length,
int x, int y) {
String s = new String(data, offset, length);
drawString(g2d, s, x, y);
}
public void drawString(SunGraphics2D g2d, String str, double x, double y) {
if ("".equals(str)) {
return; // TextLayout constructor throws IAE on "".
}
TextLayout tl = new TextLayout(str, g2d.getFont(),
g2d.getFontRenderContext());
Shape s = tl.getOutline(AffineTransform.getTranslateInstance(x, y));
int textAAHint = g2d.getFontInfo().aaHint;
int prevaaHint = - 1;
if (textAAHint != SunHints.INTVAL_TEXT_ANTIALIAS_OFF &&
g2d.antialiasHint != SunHints.INTVAL_ANTIALIAS_ON) {
prevaaHint = g2d.antialiasHint;
g2d.antialiasHint = SunHints.INTVAL_ANTIALIAS_ON;
g2d.validatePipe();
} else if (textAAHint == SunHints.INTVAL_TEXT_ANTIALIAS_OFF
&& g2d.antialiasHint != SunHints.INTVAL_ANTIALIAS_OFF) {
prevaaHint = g2d.antialiasHint;
g2d.antialiasHint = SunHints.INTVAL_ANTIALIAS_OFF;
g2d.validatePipe();
}
g2d.fill(s);
if (prevaaHint != -1) {
g2d.antialiasHint = prevaaHint;
g2d.validatePipe();
}
}
public void drawGlyphVector(SunGraphics2D g2d, GlyphVector gv,
float x, float y) {
Shape s = gv.getOutline(x, y);
int prevaaHint = - 1;
FontRenderContext frc = gv.getFontRenderContext();
boolean aa = frc.isAntiAliased();
/* aa will be true if any AA mode has been specified.
* ie for LCD and 'gasp' modes too.
* We will check if 'gasp' has resolved AA to be "OFF", and
* in all other cases (ie AA ON and all LCD modes) use AA outlines.
*/
if (aa) {
if (g2d.getGVFontInfo(gv.getFont(), frc).aaHint ==
SunHints.INTVAL_TEXT_ANTIALIAS_OFF) {
aa = false;
}
}
if (aa && g2d.antialiasHint != SunHints.INTVAL_ANTIALIAS_ON) {
prevaaHint = g2d.antialiasHint;
g2d.antialiasHint = SunHints.INTVAL_ANTIALIAS_ON;
g2d.validatePipe();
} else if (!aa && g2d.antialiasHint != SunHints.INTVAL_ANTIALIAS_OFF) {
prevaaHint = g2d.antialiasHint;
g2d.antialiasHint = SunHints.INTVAL_ANTIALIAS_OFF;
g2d.validatePipe();
}
g2d.fill(s);
if (prevaaHint != -1) {
g2d.antialiasHint = prevaaHint;
g2d.validatePipe();
}
}
}