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/OpenJDK 21

Class StyleSheet.BoxPainter

java.lang.Object
javax.swing.text.html.StyleSheet.BoxPainter
All Implemented Interfaces:
Serializable
Enclosing class:
StyleSheet
public static final class StyleSheet.BoxPainter extends Object implements Serializable
Class to carry out some of the duties of CSS formatting. Implementations of this class enable views to present the CSS formatting while not knowing anything about how the CSS values are being cached.

As a delegate of Views, this object is responsible for the insets of a View and making sure the background is maintained according to the CSS attributes.

Method Summary

Modifier and Type Method Description
float getInset(int side, View v)
Fetches the inset needed on a given side to account for the margin, border, and padding.
void paint(Graphics g, float x, float y, float w, float h, View v)
Paints the CSS box according to the attributes given.

Methods declared in class java.lang.Object

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

Method Details

getInset

public float getInset(int side, View v)
Fetches the inset needed on a given side to account for the margin, border, and padding.
Parameters:
side - The size of the box to fetch the inset for. This can be View.TOP, View.LEFT, View.BOTTOM, or View.RIGHT.
v - the view making the request. This is used to get the AttributeSet, and may be used to resolve percentage arguments.
Returns:
the inset needed for the margin, border and padding.
Throws:
IllegalArgumentException - for an invalid direction

paint

public void paint(Graphics g, float x, float y, float w, float h, View v)
Paints the CSS box according to the attributes given. This should paint the border, padding, and background.
Parameters:
g - the rendering surface.
x - the x coordinate of the allocated area to render into.
y - the y coordinate of the allocated area to render into.
w - the width of the allocated area to render into.
h - the height of the allocated area to render into.
v - the view making the request. This is used to get the AttributeSet, and may be used to resolve percentage arguments.

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/text/html/StyleSheet.BoxPainter.html