com.fr.design.gui.syntax.ui.rtextarea

类 VolatileImageBackgroundPainterStrategy

java.lang.Object

com.fr.design.gui.syntax.ui.rtextarea.ImageBackgroundPainterStrategy

com.fr.design.gui.syntax.ui.rtextarea.VolatileImageBackgroundPainterStrategy

所有已实现的接口:

BackgroundPainterStrategy

public class VolatileImageBackgroundPainterStrategy
extends ImageBackgroundPainterStrategy

A strategy for painting the background of an RTextAreaBase as an image. The image is always stretched to completely fill the RTextAreaBase.

A java.awt.image.VolatileImage is used for rendering; theoretically, this should be the best image format for performance.

You can set the scaling hint used when stretching/skewing the image to fit in the RTextAreaBase's background via the setScalingHint method, but keep in mind the more accurate the scaling hint, the less responsive your application will be when stretching the window (as that's the only time the image's size is recalculated).

版本:

0.1

作者:

Robert Futrell

另请参阅:

ImageBackgroundPainterStrategy, BufferedImageBackgroundPainterStrategy

字段概要

从类继承的字段 com.fr.design.gui.syntax.ui.rtextarea.ImageBackgroundPainterStrategy

tracker

构造器概要

构造器

构造器和说明
VolatileImageBackgroundPainterStrategy(com.fr.design.gui.syntax.ui.rtextarea.RTextAreaBase ta) Constructor.

方法概要

方法

限定符和类型	方法和说明
protected void	paintImage(java.awt.Graphics g, int x, int y) Paints the image at the specified location.
protected void	rescaleImage(int width, int height, int hint) Rescales the displayed image to be the specified size.

从类继承的方法 com.fr.design.gui.syntax.ui.rtextarea.ImageBackgroundPainterStrategy

getMasterImage, getRTextAreaBase, getScalingHint, paint, setImage, setImage, setScalingHint

从类继承的方法 java.lang.Object

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

构造器详细资料

VolatileImageBackgroundPainterStrategy

public VolatileImageBackgroundPainterStrategy(com.fr.design.gui.syntax.ui.rtextarea.RTextAreaBase ta)

Constructor.

参数:

ta - The text area whose background we'll be painting.

方法详细资料

paintImage

protected void paintImage(java.awt.Graphics g,
              int x,
              int y)

Paints the image at the specified location. This method assumes scaling has already been done, and simply paints the background image "as-is."

指定者:

paintImage 在类中 ImageBackgroundPainterStrategy

参数:

g - The graphics context.

x - The x-coordinate at which to paint.

y - The y-coordinate at which to paint.

rescaleImage

protected void rescaleImage(int width,
                int height,
                int hint)

Rescales the displayed image to be the specified size.

指定者:

rescaleImage 在类中 ImageBackgroundPainterStrategy

参数:

width - The new width of the image.

height - The new height of the image.

hint - The scaling hint to use.