Package org.gvsig.compat.lang

Interface GraphicsUtils

public interface GraphicsUtils

Multi-platform graphic utils interface. This allows platforms with poor java.awt.Graphics2D implementations to share most of the application source code.

Author:

Juan Lucas Dominguez Rubio jldominguez at prodevelop.es

Method Summary

Modifier and Type	Method	Description
BufferedImage	copyBufferedImage(BufferedImage img)	Produces a copy of a buffered image with the same graphic content (pixel color)
BufferedImage	createBufferedImage(int w, int h, int type)	Create a buffered Image of the given size and type.
PrintAttributes	createPrintAttributes()	Creates an object that implements the PrintAttributes interface with default/trivial values.
Font	deriveFont(Font srcfont, float newheight)	Returns an istance of Font which is the same as the one provided except for the size.
int	getScreenDPI()	Returns device screen DPI (dots per inch)
void	setRenderingHintsForDrawing(Graphics2D g)	Sets the rendering hints to the Graphics2D object in a way that is suitable for drawing.
void	setRenderingHintsForPrinting(Graphics2D g)	Sets the rendering hints to the Graphics2D object in a way that is suitable for printing.
void	translate(Graphics2D g, double x, double y)	Adds a translation operation to the Graphics2D object's transformation matrix.

Method Details

createBufferedImage

BufferedImage createBufferedImage(int w,
 int h,
 int type)

Create a buffered Image of the given size and type. In this context, buffered image means editable image (admits setRGB etc)

Parameters:

w - width in pixels of the requested image

h - height in pixels of the requested image

type - image type (refers to bands, etc. see

invalid reference

Image

Returns:

a buffered (editable) image of the desired size and type

copyBufferedImage

BufferedImage copyBufferedImage(BufferedImage img)

Produces a copy of a buffered image with the same graphic content (pixel color)

Parameters:

img - image to be copied

Returns:

new instance of a BufferedImage (editable) with same size, type and graphic content.

deriveFont

Font deriveFont(Font srcfont,
 float newheight)

Returns an istance of Font which is the same as the one provided except for the size.

Parameters:

srcfont - provided font to be used as model

newheight - height in pixels of the new fonr

Returns:

the new font, same properties as the provided font, but different size

getScreenDPI

int getScreenDPI()

Returns device screen DPI (dots per inch)

Returns:

number of pixels per inch in the current screen

translate

void translate(Graphics2D g,
 double x,
 double y)

Adds a translation operation to the Graphics2D object's transformation matrix.

Parameters:

g - Object whose transformation matrix has to be modified

x - horizontal offset of the translation

y - vertical offset of the translation

createPrintAttributes

PrintAttributes createPrintAttributes()

Creates an object that implements the PrintAttributes interface with default/trivial values.

Returns:

an object that implements the PrintAttributes interface with default/trivial values.

setRenderingHintsForDrawing

void setRenderingHintsForDrawing(Graphics2D g)

Sets the rendering hints to the Graphics2D object in a way that is suitable for drawing.

Parameters:

g - the Graphics2D object whose rendering hints have to be set for drawing

setRenderingHintsForPrinting

void setRenderingHintsForPrinting(Graphics2D g)

Sets the rendering hints to the Graphics2D object in a way that is suitable for printing.

Parameters:

g - the Graphics2D object whose rendering hints have to be set for printing