javax.swing.text

Class GlyphView.GlyphPainter

Enclosing Class:
GlyphView

public static abstract class GlyphView.GlyphPainter
extends Object

An abstract base implementation for a glyph painter for GlyphView.

Constructor Summary

GlyphPainter()
Creates a new GlyphPainer.

Method Summary

float
getHeight(GlyphView view)
Returns the full height of the rendered text.
float
getSpan(GlyphView view, int p0, int p1, TabExpander te, float x)
Determine the span of the glyphs from location p0 to location p1.
Shape
modelToView(GlyphView view, int pos, Position.Bias b, Shape a)
Maps a position in the document into the coordinate space of the View.
void
paint(GlyphView view, Graphics g, Shape a, int p0, int p1)
Paints the glyphs.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GlyphPainter

public GlyphPainter()
Creates a new GlyphPainer.

Method Details

getHeight

public float getHeight(GlyphView view)
Returns the full height of the rendered text.

Returns:
the full height of the rendered text


getSpan

public float getSpan(GlyphView view,
                     int p0,
                     int p1,
                     TabExpander te,
                     float x)
Determine the span of the glyphs from location p0 to location p1. If te is not null, then TABs are expanded using this TabExpander. The parameter x is the location at which the view is located (this is important when using TAB expansion).

Parameters:
view - the glyph view
p0 - the starting location in the document model
te - the tab expander to use
x - the location at which the view is located

Returns:
the span of the glyphs from location p0 to location p1, possibly using TAB expansion


modelToView

public Shape modelToView(GlyphView view,
                         int pos,
                         Position.Bias b,
                         Shape a)
            throws BadLocationException
Maps a position in the document into the coordinate space of the View. The output rectangle usually reflects the font height but has a width of zero. Position.Bias.Backward depending on the preferred direction bias. If null this defaults to Position.Bias.Forward

Parameters:
view - the glyph view
pos - the position of the character in the model
a - the area that is occupied by the view

Returns:
a rectangle that gives the location of the document position inside the view coordinate space

Throws:
BadLocationException - if pos is invalid
IllegalArgumentException - if b is not one of the above listed valid values


paint

public void paint(GlyphView view,
                  Graphics g,
                  Shape a,
                  int p0,
                  int p1)
Paints the glyphs.

Parameters:
view - the glyph view to paint
g - the graphics context to use for painting
a - the allocation of the glyph view
p0 - the start position (in the model) from which to paint
p1 - the end position (in the model) to which to paint


GlyphView.java -- A view to render styled text Copyright (C) 2005 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath 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 for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.