javax.swing.text

Class PlainView

Implemented Interfaces:
SwingConstants, TabExpander
Known Direct Subclasses:
FieldView

public class PlainView
extends View
implements TabExpander

Field Summary

protected FontMetrics
metrics

Fields inherited from class javax.swing.text.View

BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXIS

Fields inherited from interface javax.swing.SwingConstants

BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

Constructor Summary

PlainView(Element elem)
Creates a new View instance.

Method Summary

protected void
drawLine(int lineIndex, Graphics g, int x, int y)
protected int
drawSelectedText(Graphics g, int x, int y, int p0, int p1)
protected int
drawUnselectedText(Graphics g, int x, int y, int p0, int p1)
float
getPreferredSpan(int axis)
protected int
getTabSize()
protected Rectangle
lineToRect(Shape a, int line)
Shape
modelToView(int position, Shape a, Position.Bias b)
Maps a position in the document into the coordinate space of the View.
float
nextTabStop(float x, int tabStop)
Returns the next tab stop position after a given reference position.
void
paint(Graphics g, Shape s)
protected void
updateMetrics()
int
viewToModel(float x, float y, Shape a, Position.Bias b)
Maps coordinates from the View's space into a position in the document model.

Methods inherited from class javax.swing.text.View

append, breakView, changedUpdate, createFragment, forwardUpdate, forwardUpdateToView, getAlignment, getAttributes, getBreakWeight, getChildAllocation, getContainer, getDocument, getElement, getEndOffset, getGraphics, getMaximumSpan, getMinimumSpan, getParent, getPreferredSpan, getResizeWeight, getStartOffset, getToolTipText, getView, getViewCount, getViewFactory, getViewIndex, getViewIndex, insert, insertUpdate, isVisible, modelToView, modelToView, paint, preferenceChanged, remove, removeAll, removeUpdate, replace, setParent, setSize, updateChildren, updateLayout, viewToModel

Methods inherited from class java.lang.Object

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

Field Details

metrics

protected FontMetrics metrics

Constructor Details

PlainView

public PlainView(Element elem)
Creates a new View instance.

Parameters:
elem - an Element value

Method Details

drawLine

protected void drawLine(int lineIndex,
                        Graphics g,
                        int x,
                        int y)


drawSelectedText

protected int drawSelectedText(Graphics g,
                               int x,
                               int y,
                               int p0,
                               int p1)
            throws BadLocationException


drawUnselectedText

protected int drawUnselectedText(Graphics g,
                                 int x,
                                 int y,
                                 int p0,
                                 int p1)
            throws BadLocationException


getPreferredSpan

public float getPreferredSpan(int axis)
Overrides:
getPreferredSpan in interface View


getTabSize

protected int getTabSize()


lineToRect

protected Rectangle lineToRect(Shape a,
                               int line)

Since:
1.4


modelToView

public Shape modelToView(int position,
                         Shape a,
                         Position.Bias b)
            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
Overrides:
modelToView in interface View

Parameters:
a - the area that is occupied by the view
b - either Position.Bias.Forward or

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


nextTabStop

public float nextTabStop(float x,
                         int tabStop)
Returns the next tab stop position after a given reference position. This implementation ignores the tabStop argument.
Specified by:
nextTabStop in interface TabExpander

Parameters:
x - the current x position in pixels
tabStop - the position within the text stream that the tab occured at


paint

public void paint(Graphics g,
                  Shape s)
Overrides:
paint in interface View


updateMetrics

protected void updateMetrics()

Since:
1.4


viewToModel

public int viewToModel(float x,
                       float y,
                       Shape a,
                       Position.Bias b)
Maps coordinates from the View's space into a position in the document model.

Parameters:
x - the x coordinate in the view space
y - the y coordinate in the view space
a - the allocation of this View
b - the bias to use

Returns:
the position in the document that corresponds to the screen coordinates x, y


PlainView.java -- Copyright (C) 2004, 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.